lookingGlass: Get font from GConf

Instead of using "Monospace", pick the users configured monospace font
name up from GConf. (This is a nice touch, but is more done here to
demonstrate that we can do it rather than for any great utility.)

.gitignore

@@ -38,5 +38,7 @@ src/gnomeshell-taskpanel
 src/gnome-shell
 src/test-recorder
 src/test-recorder.ogg
+src/test-theme
 stamp-h1
+tests/run-test.sh
 xmldocs.make

Makefile.am

@@ -1,13 +1,22 @@
-SUBDIRS = data js src po
+SUBDIRS = data js src tests po
 
 EXTRA_DIST =		\
 	.project	\
-	.settings
+	.settings	\
+	autogen.sh
+
+# These are files checked into Git that we don't want to distribute
+DIST_EXCLUDE =					\
+	.gitignore				\
+	gnome-shell.doap			\
+	MAINTAINERS				\
+	tools/build/*
 
 distcheck-hook:
-	@echo "Checking disted javascript against files in git"
+	@echo "Checking disted files against files in git"
 	@failed=false; \
-	for f in `cd $(srcdir) && git ls-files js` ; do \
+	exclude=`(for p in $(DIST_EXCLUDE) ; do echo --exclude=$$p ; done)`; \
+	for f in `cd $(srcdir) && git ls-files $$exclude` ; do \
 		if ! test -e $(distdir)/$$f ; then \
 			echo File missing from distribution: $$f ; \
 			failed=true ; \

configure.ac

@@ -57,8 +57,10 @@ PKG_CHECK_MODULES(MUTTER_PLUGIN, gio-unix-2.0 gtk+-2.0 dbus-glib-1 mutter-plugin
                                  gnome-desktop-2.0 >= 2.26 libstartup-notification-1.0
                                  gobject-introspection-1.0 >= 0.6.5)
 PKG_CHECK_MODULES(TIDY, clutter-1.0)
+PKG_CHECK_MODULES(NBTK, clutter-1.0 gtk+-2.0 clutter-imcontext-0.1)
 PKG_CHECK_MODULES(BIG, clutter-1.0 gtk+-2.0 librsvg-2.0)
 PKG_CHECK_MODULES(GDMUSER, dbus-glib-1 gtk+-2.0)
+PKG_CHECK_MODULES(TOOLKIT, clutter-1.0 libcroco-0.6)
 PKG_CHECK_MODULES(TRAY, gtk+-2.0)
 
 MUTTER_BIN_DIR=`$PKG_CONFIG --variable=exec_prefix mutter-plugins`/bin
@@ -128,5 +130,6 @@ AC_OUTPUT([
   js/misc/Makefile
   js/ui/Makefile
   src/Makefile
+  tests/Makefile
   po/Makefile.in
 ])

data/Makefile.am

@@ -12,9 +12,8 @@ gnome-shell.desktop.in: gnome-shell.desktop.in.in
 gnome-shell.desktop: gnome-shell.desktop.in
 	$(AM_V_GEN) sed s/^_// < $< > $@ || rm $@
 
-imagedir = $(pkgdatadir)/images
+imagesdir = $(pkgdatadir)/images
-
+dist_images_DATA =				\
-dist_image_DATA =		\
 	add-workspace.svg			\
 	app-well-glow.png			\
 	back.svg				\
@@ -24,6 +23,15 @@ dist_image_DATA =		\
 	magnifier.svg				\
 	remove-workspace.svg
 
+themedir = $(pkgdatadir)/theme
+dist_theme_DATA =				\
+	theme/gnome-shell.css			\
+	theme/scroll-button-down.png		\
+	theme/scroll-button-down-hover.png	\
+	theme/scroll-button-up.png		\
+	theme/scroll-button-up-hover.png	\
+	theme/scroll-vhandle.png
+
 schemadir  = @GCONF_SCHEMA_FILE_DIR@
 schema_DATA = gnome-shell.schemas
 

data/theme/gnome-shell.css

@@ -0,0 +1,97 @@
+/* Copyright 2009, Red Hat, Inc.
+ *
+ * Portions adapted from NBTK's data/style/default.css
+ *   Copyright 2009 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+NbtkScrollBar
+{
+  background-color: #354761;
+  padding: 0px;
+}
+
+NbtkScrollView
+{
+  scrollbar-width: 16px;
+  scrollbar-height: 16px;
+}
+
+NbtkButton#up-stepper
+{
+  border-image: url("scroll-button-up.png") 5;
+}
+
+NbtkButton#up-stepper:hover,
+NbtkButton#up-stepper:active
+{
+  border-image: url("scroll-button-up-hover.png") 5;
+}
+
+NbtkButton#down-stepper
+{
+  border-image: url("scroll-button-down.png") 5;
+}
+
+NbtkButton#down-stepper:hover,
+NbtkButton#down-stepper:active
+{
+  border-image: url("scroll-button-down-hover.png") 5;
+}
+
+NbtkScrollBar NbtkButton#vhandle
+{
+  border-image: url("scroll-vhandle.png") 5;
+}
+
+NbtkScrollBar NbtkButton#vhandle:hover
+{
+  border-image: url("scroll-vhandle.png") 5;
+}
+
+/* LookingGlass */
+
+#LookingGlassDialog
+{
+  background-color: rgba(0,0,0,0.85);
+  spacing: 4px;
+  padding: 4px;
+  border: 1px solid rgba(0,0,172,0.85);
+  border-radius: 4px;
+
+  color: #88ff66;
+}
+
+#LookingGlassDialog > #Toolbar
+{
+  border: 1px solid grey;
+  border-radius: 4px;
+}
+
+#LookingGlassDialog NbtkLabel
+{
+  color: #88ff66;
+}
+
+#LookingGlassDialog NbtkEntry
+{
+  color: #88ff66;
+}
+
+#LookingGlassDialog NbtkBoxLayout#EvalBox
+{
+  padding: 4px;
+  spacing: 4px;
+}

js/ui/Makefile.am

@@ -9,6 +9,7 @@ dist_jsui_DATA =		\
 	dash.js			\
 	dnd.js			\
 	docDisplay.js		\
+	environment.js		\
 	genericDisplay.js	\
 	link.js			\
 	lookingGlass.js		\

js/ui/environment.js

@@ -0,0 +1,32 @@
+/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
+
+const Nbtk = imports.gi.Nbtk;
+
+const Tweener = imports.ui.tweener;
+
+// "monkey patch" in some varargs ClutterContainer methods; we need
+// to do this per-container class since there is no representation
+// of interfaces in Javascript
+function _patchContainerClass(containerClass) {
+    // This one is a straightforward mapping of the C method
+    containerClass.prototype.child_set = function(actor, props) {
+        let meta = this.get_child_meta(actor);
+        for (prop in props)
+            meta[prop] = props[prop];
+    };
+
+    // clutter_container_add() actually is a an add-many-actors
+    // method. We conveniently, but somewhat dubiously, take the
+    // this opportunity to make it do something more useful.
+    containerClass.prototype.add = function(actor, props) {
+        this.add_actor(actor);
+        if (props)
+            this.child_set(actor, props);
+    };
+}
+
+_patchContainerClass(Nbtk.BoxLayout);
+
+function init() {
+    Tweener.init();
+}

js/ui/lookingGlass.js

@@ -4,6 +4,7 @@ const Big = imports.gi.Big;
 const Clutter = imports.gi.Clutter;
 const Gio = imports.gi.Gio;
 const Pango = imports.gi.Pango;
+const Nbtk = imports.gi.Nbtk;
 const Shell = imports.gi.Shell;
 const Signals = imports.signals;
 const Lang = imports.lang;
@@ -12,18 +13,7 @@ const Mainloop = imports.mainloop;
 const Tweener = imports.ui.tweener;
 const Main = imports.ui.main;
 
-const LG_BORDER_COLOR = new Clutter.Color();
+/* Imports...feel free to add here as needed */
-LG_BORDER_COLOR.from_pixel(0x0000aca0);
-const LG_BACKGROUND_COLOR = new Clutter.Color();
-LG_BACKGROUND_COLOR.from_pixel(0x000000d5);
-const GREY = new Clutter.Color();
-GREY.from_pixel(0xAFAFAFFF);
-const MATRIX_GREEN = new Clutter.Color();
-MATRIX_GREEN.from_pixel(0x88ff66ff);
-// FIXME pull from GConf
-const MATRIX_FONT = 'Monospace 10';
-
-                    /* Imports...feel free to add here as needed */
 var commandHeader = "const Clutter = imports.gi.Clutter; " +
                     "const GLib = imports.gi.GLib; " +
                     "const Gtk = imports.gi.Gtk; " +
@@ -47,7 +37,7 @@ function Notebook() {
 
 Notebook.prototype = {
     _init: function() {
-        this.actor = new Big.Box();
+        this.actor = new Nbtk.BoxLayout({ vertical: true });
 
         this.tabControls = new Big.Box({ orientation: Big.BoxOrientation.HORIZONTAL,
                                          spacing: 4, padding: 2 });
@@ -58,21 +48,24 @@ Notebook.prototype = {
 
     appendPage: function(name, child) {
         let labelOuterBox = new Big.Box({ padding: 2 });
-        let labelBox = new Big.Box({ padding: 2, border_color: MATRIX_GREEN,
+        let labelBox = new Nbtk.BoxLayout({ reactive: true });
-                                     reactive: true });
         labelOuterBox.append(labelBox, Big.BoxPackFlags.NONE);
-        let label = new Clutter.Text({ color: MATRIX_GREEN,
+        let label = new Nbtk.Label({ text: name });
-                                       font_name: MATRIX_FONT,
-                                       text: name });
         labelBox.connect('button-press-event', Lang.bind(this, function () {
             this.selectChild(child);
             return true;
         }));
-        labelBox.append(label, Big.BoxPackFlags.EXPAND);
+        labelBox.add(label, { expand: true });
-        this._tabs.push([child, labelBox]);
-        child.hide();
-        this.actor.append(child, Big.BoxPackFlags.EXPAND);
         this.tabControls.append(labelOuterBox, Big.BoxPackFlags.NONE);
+
+        let scrollview = new Nbtk.ScrollView({ x_fill: true, y_fill: true });
+        scrollview.get_hscroll_bar().hide();
+        scrollview.add_actor(child);
+
+        this._tabs.push([child, labelBox, scrollview]);
+        scrollview.hide();
+        this.actor.add(scrollview, { expand: true });
+
         if (this._selectedIndex == -1)
             this.selectIndex(0);
     },
@@ -80,10 +73,10 @@ Notebook.prototype = {
     _unselect: function() {
         if (this._selectedIndex < 0)
             return;
-        let [child, labelBox] = this._tabs[this._selectedIndex];
+        let [child, labelBox, scrollview] = this._tabs[this._selectedIndex];
         labelBox.padding = 2;
         labelBox.border = 0;
-        child.hide();
+        scrollview.hide();
         this._selectedIndex = -1;
     },
 
@@ -95,10 +88,10 @@ Notebook.prototype = {
             this.emit('selection', null);
             return;
         }
-        let [child, labelBox] = this._tabs[index];
+        let [child, labelBox, scrollview] = this._tabs[index];
         labelBox.padding = 1;
         labelBox.border = 1;
-        child.show();
+        scrollview.show();
         this._selectedIndex = index;
         this.emit('selection', child);
     },
@@ -108,7 +101,7 @@ Notebook.prototype = {
             this.selectIndex(-1);
         else {
             for (let i = 0; i < this._tabs.length; i++) {
-                let [tabChild, labelBox] = this._tabs[i];
+                let [tabChild, labelBox, scrollview] = this._tabs[i];
                 if (tabChild == child) {
                     this.selectIndex(i);
                     return;
@@ -130,20 +123,19 @@ Result.prototype = {
 
         this.actor = new Big.Box();
 
-        let cmdTxt = new Clutter.Text({ color: MATRIX_GREEN,
+        let cmdTxt = new Nbtk.Label({ text: command });
-                                        font_name: MATRIX_FONT,
+        cmdTxt.ellipsize = Pango.EllipsizeMode.END;
-                                        ellipsize: Pango.EllipsizeMode.END,
+
-                                        text: command });
         this.actor.append(cmdTxt, Big.BoxPackFlags.NONE);
-        let resultTxt = new Clutter.Text({ color: MATRIX_GREEN,
+        let resultTxt = new Nbtk.Label({ text: "r(" + index + ") = " + o });
-                                           font_name: MATRIX_FONT,
+        resultTxt.ellipsize = Pango.EllipsizeMode.END;
-                                           ellipsize: Pango.EllipsizeMode.END,
+
-                                           text: "r(" + index + ") = " + o });
         this.actor.append(resultTxt, Big.BoxPackFlags.NONE);
-        let line = new Big.Box({ border_color: GREY,
+        let line = new Clutter.Rectangle({ name: "Separator",
-                                 border_bottom: 1,
+                                           height: 1 });
-                                 height: 8 });
+        let padBin = new Nbtk.Bin({ name: "Separator", x_fill: true, y_fill: true });
-        this.actor.append(line, Big.BoxPackFlags.NONE);
+        padBin.add_actor(line);
+        this.actor.append(padBin, Big.BoxPackFlags.NONE);
     }
 }
 
@@ -158,17 +150,14 @@ ActorHierarchy.prototype = {
 
         this._parentList = [];
 
-        this.actor = new Big.Box({ spacing: 4,
+        this.actor = new Nbtk.BoxLayout({ name: "ActorHierarchy", vertical: true });
-                                   border: 1,
-                                   padding: 4,
-                                   border_color: GREY });
     },
 
     setTarget: function(actor) {
         this._previousTarget = this._target;
         this.target = actor;
 
-        this.actor.remove_all();
+        this.actor.get_children().forEach(function (child) { child.destroy(); });
 
         if (!(actor instanceof Clutter.Actor))
             return;
@@ -181,11 +170,9 @@ ActorHierarchy.prototype = {
         while ((parent = parent.get_parent()) != null) {
             this._parentList.push(parent);
 
-            let link = new Clutter.Text({ color: MATRIX_GREEN,
+            let link = new Nbtk.Label({ reactive: true,
-                                          font_name: MATRIX_FONT,
-                                          reactive: true,
                                         text: "" + parent });
-            this.actor.append(link, Big.BoxPackFlags.IF_FITS);
+            this.actor.add_actor(link);
             let parentTarget = parent;
             link.connect('button-press-event', Lang.bind(this, function () {
                 this._selectByActor(parentTarget);
@@ -214,16 +201,13 @@ PropertyInspector.prototype = {
 
         this._parentList = [];
 
-        this.actor = new Big.Box({ spacing: 4,
+        this.actor = new Nbtk.BoxLayout({ name: "PropertyInspector", vertical: true });
-                                   border: 1,
-                                   padding: 4,
-                                   border_color: GREY });
     },
 
     setTarget: function(actor) {
         this.target = actor;
 
-        this.actor.remove_all();
+        this.actor.get_children().forEach(function (child) { child.destroy(); });
 
         for (let propName in actor) {
             let valueStr;
@@ -233,11 +217,9 @@ PropertyInspector.prototype = {
                 valueStr = '<error>';
             }
             let propText = propName + ": " + valueStr;
-            let propDisplay = new Clutter.Text({ color: MATRIX_GREEN,
+            let propDisplay = new Nbtk.Label({ reactive: true,
-                                                 font_name: MATRIX_FONT,
-                                                 reactive: true,
                                                text: propText });
-            this.actor.append(propDisplay, Big.BoxPackFlags.IF_FITS);
+            this.actor.add_actor(propDisplay);
         }
     }
 }
@@ -249,20 +231,16 @@ function Inspector() {
 Inspector.prototype = {
     _init: function() {
         let width = 150;
-        let eventHandler = new Big.Box({ background_color: LG_BACKGROUND_COLOR,
+        let eventHandler = new Nbtk.BoxLayout({ name: "LookingGlassDialog",
-                                         border: 1,
+                                                vertical: false,
-                                         border_color: LG_BORDER_COLOR,
+                                                y: Math.floor(global.stage.height/2),
-                                         corner_radius: 4,
+                                                reactive: true });
-                                         y: global.stage.height/2,
-                                         reactive: true
-                                      });
         eventHandler.connect('notify::allocation', Lang.bind(this, function () {
             eventHandler.x = Math.floor((global.stage.width)/2 - (eventHandler.width)/2);
         }));
         global.stage.add_actor(eventHandler);
-        let displayText = new Clutter.Text({ color: MATRIX_GREEN,
+        let displayText = new Nbtk.Label();
-                                             font_name: MATRIX_FONT, text: '' });
+        eventHandler.add(displayText, { expand: true });
-        eventHandler.append(displayText, Big.BoxPackFlags.EXPAND);
 
         let borderPaintTarget = null;
         let borderPaintId = null;
@@ -321,29 +299,26 @@ LookingGlass.prototype = {
         this._offset = 0;
         this._results = [];
 
-        // TODO replace with scrolling or something better
+        // Sort of magic, but...eh.
-        this._maxItems = 10;
+        this._maxItems = 150;
+
+        this.actor = new Nbtk.BoxLayout({ name: "LookingGlassDialog",
+                                          vertical: true,
+                                          visible: false });
+
+        let gconf = Shell.GConf.get_default();
+        gconf.watch_directory("/desktop/gnome/interface");
+        gconf.connect("changed::/desktop/gnome/interface/monospace_font_name",
+                      Lang.bind(this, this._updateFont));
+        this._updateFont();
 
-        this.actor = new Big.Box({ background_color: LG_BACKGROUND_COLOR,
-                                   border: 1,
-                                   border_color: LG_BORDER_COLOR,
-                                   corner_radius: 4,
-                                   padding_top: 8,
-                                   padding_left: 4,
-                                   padding_right: 4,
-                                   padding_bottom: 4,
-                                   spacing: 4,
-                                   visible: false
-                                });
         global.stage.add_actor(this.actor);
 
-        let toolbar = new Big.Box({ orientation: Big.BoxOrientation.HORIZONTAL,
+        let toolbar = new Nbtk.BoxLayout({ name: "Toolbar" });
-                                    border: 1, border_color: GREY,
+        this.actor.add_actor(toolbar);
-                                    corner_radius: 4 });
-        this.actor.append(toolbar, Big.BoxPackFlags.NONE);
         let inspectIcon = Shell.TextureCache.get_default().load_gicon(new Gio.ThemedIcon({ name: 'gtk-color-picker' }),
                                                                       24);
-        toolbar.append(inspectIcon, Big.BoxPackFlags.NONE);
+        toolbar.add_actor(inspectIcon);
         inspectIcon.reactive = true;
         inspectIcon.connect('button-press-event', Lang.bind(this, function () {
             let inspector = new Inspector();
@@ -361,31 +336,26 @@ LookingGlass.prototype = {
         }));
 
         let notebook = new Notebook();
-        this.actor.append(notebook.actor, Big.BoxPackFlags.EXPAND);
+        this.actor.add(notebook.actor, { expand: true });
-        toolbar.append(notebook.tabControls, Big.BoxPackFlags.END);
 
-        this._evalBox = new Big.Box({ orientation: Big.BoxOrientation.VERTICAL,
+        let emptyBox = new Nbtk.Bin();
-                                      spacing: 4 });
+        toolbar.add(emptyBox, { expand: true });
+        toolbar.add_actor(notebook.tabControls);
+
+        this._evalBox = new Nbtk.BoxLayout({ name: "EvalBox", vertical: true });
         notebook.appendPage('Evaluator', this._evalBox);
 
         this._resultsArea = new Big.Box({ orientation: Big.BoxOrientation.VERTICAL,
                                           spacing: 4 });
-        this._evalBox.append(this._resultsArea, Big.BoxPackFlags.EXPAND);
+        this._evalBox.add(this._resultsArea, { expand: true });
 
         let entryArea = new Big.Box({ orientation: Big.BoxOrientation.HORIZONTAL });
-        this._evalBox.append(entryArea, Big.BoxPackFlags.NONE);
+        this._evalBox.add_actor(entryArea);
 
-        let label = new Clutter.Text({ color: MATRIX_GREEN,
+        let label = new Nbtk.Label({ text: 'js>>> ' });
-                                       font_name: MATRIX_FONT,
-                                       text: 'js>>> ' });
         entryArea.append(label, Big.BoxPackFlags.NONE);
 
-        this._entry = new Clutter.Text({ color: MATRIX_GREEN,
+        this._entry = new Nbtk.Entry();
-                                         font_name: MATRIX_FONT,
-                                         editable: true,
-                                         activatable: true,
-                                         singleLineMode: true,
-                                         text: ''});
         /* unmapping the edit box will un-focus it, undo that */
         notebook.connect('selection', Lang.bind(this, function (nb, child) {
             if (child == this._evalBox)
@@ -403,7 +373,7 @@ LookingGlass.prototype = {
             notebook.selectIndex(0);
         }));
 
-        this._entry.connect('activate', Lang.bind(this, function (o, e) {
+        this._entry.clutter_text.connect('activate', Lang.bind(this, function (o, e) {
             let text = o.get_text();
             // Ensure we don't get newlines in the command; the history file is
             // newline-separated.
@@ -416,7 +386,7 @@ LookingGlass.prototype = {
             this._historyNavIndex = -1;
             return true;
         }));
-        this._entry.connect('key-press-event', Lang.bind(this, function(o, e) {
+        this._entry.clutter_text.connect('key-press-event', Lang.bind(this, function(o, e) {
             let symbol = e.get_key_symbol();
             if (symbol == Clutter.Escape) {
                 this.close();
@@ -446,6 +416,19 @@ LookingGlass.prototype = {
         }));
     },
 
+    _updateFont: function() {
+        let gconf = Shell.GConf.get_default();
+        let fontName = gconf.get_string("/desktop/gnome/interface/monospace_font_name");
+        // This is mishandled by the scanner - should by Pango.FontDescription_from_string(fontName);
+        // https://bugzilla.gnome.org/show_bug.cgi?id=595889
+        let fontDesc = Pango.Font.description_from_string(fontName);
+        // We ignore everything but size and style; you'd be crazy to set your system-wide
+        // monospace font to be bold/oblique/etc. Could easily be added here.
+        this.actor.style =
+            'font-size: ' + fontDesc.get_size() / 1024. + (fontDesc.get_size_is_absolute() ? 'px' : 'pt') + ';'
+            + 'font-family: "' + fontDesc.get_family() + '";';
+    },
+
     _readHistory: function () {
         if (!this._historyFile.query_exists(null))
             return;

js/ui/main.js

@@ -7,16 +7,17 @@ const GLib = imports.gi.GLib;
 const Lang = imports.lang;
 const Mainloop = imports.mainloop;
 const Meta = imports.gi.Meta;
+const Nbtk = imports.gi.Nbtk;
 const Shell = imports.gi.Shell;
 const Signals = imports.signals;
 
 const Chrome = imports.ui.chrome;
+const Environment = imports.ui.environment;
 const Overview = imports.ui.overview;
 const Panel = imports.ui.panel;
 const RunDialog = imports.ui.runDialog;
 const LookingGlass = imports.ui.lookingGlass;
 const Sidebar = imports.ui.sidebar;
-const Tweener = imports.ui.tweener;
 const WindowManager = imports.ui.windowManager;
 
 const DEFAULT_BACKGROUND_COLOR = new Clutter.Color();
@@ -43,7 +44,7 @@ function start() {
 
     global.grab_dbus_service();
 
-    Tweener.init();
+    Environment.init();
 
     // Ensure ShellAppMonitor is initialized; this will
     // also initialize ShellAppSystem first.  ShellAppSystem
@@ -66,6 +67,11 @@ function start() {
     for (let i = 0; i < children.length; i++)
         children[i].destroy();
 
+    let themeContext = Shell.ThemeContext.get_for_stage (global.stage);
+    let stylesheetPath = global.datadir + "/theme/gnome-shell.css";
+    let theme = new Shell.Theme ({ application_stylesheet: stylesheetPath });
+    themeContext.set_theme (theme);
+
     global.connect('panel-run-dialog', function(panel) {
         // Make sure not more than one run dialog is shown.
         getRunDialog().open();

src/Makefile-nbtk.am

@@ -0,0 +1,117 @@
+nbtk_cflags =                    \
+    -I$(top_srcdir)/src         \
+    -DPREFIX=\""$(prefix)"\"        \
+    -DLIBDIR=\""$(libdir)"\"        \
+    -DG_DISABLE_DEPRECATED          \
+    -DG_LOG_DOMAIN=\"Nbtk\"          \
+    -DNBTK_COMPILATION  \
+    $(NBTK_CFLAGS)           \
+    $(NULL)
+
+nbtk_built_sources = \
+    nbtk-enum-types.h   \
+    nbtk-enum-types.c   \
+    nbtk-marshal.h      \
+    nbtk-marshal.c
+
+BUILT_SOURCES += $(nbtk_built_sources)
+
+EXTRA_DIST += \
+	nbtk/nbtk-marshal.list \
+	nbtk/nbtk-enum-types.h.in \
+	nbtk/nbtk-enum-types.c.in
+
+CLEANFILES += stamp-nbtk-marshal.h stamp-nbtk-enum-types.h
+
+nbtk-marshal.h: stamp-nbtk-marshal.h
+	@true
+stamp-nbtk-marshal.h: Makefile nbtk/nbtk-marshal.list
+	$(AM_V_GEN) $(GLIB_GENMARSHAL) \
+		--prefix=_nbtk_marshal \
+		--header \
+	$(srcdir)/nbtk/nbtk-marshal.list > $@.tmp && \
+	(cmp -s $@.tmp nbtk-marshal.h || cp -f $@.tmp nbtk-marshal.h) && \
+	rm -f $@.tmp && \
+	echo timestamp > $(@F)
+
+nbtk-marshal.c: Makefile nbtk/nbtk-marshal.list
+	$(AM_V_GEN) (echo "#include \"nbtk-marshal.h\"" ; \
+	 $(GLIB_GENMARSHAL) \
+		--prefix=_nbtk_marshal \
+		--body \
+	 $(srcdir)/nbtk/nbtk-marshal.list ) > $@.tmp && \
+	cp -f $@.tmp nbtk-marshal.c && \
+	rm -f $@.tmp
+
+nbtk-enum-types.h: stamp-nbtk-enum-types.h Makefile
+	@true
+stamp-nbtk-enum-types.h: $(source_h) nbtk/nbtk-enum-types.h.in
+	$(AM_V_GEN) ( cd $(srcdir) && \
+	  $(GLIB_MKENUMS) \
+	    --template nbtk/nbtk-enum-types.h.in \
+	  $(nbtk_source_h) ) >> $@.tmp && \
+	(cmp -s $@.tmp nbtk-enum-types.h || cp $@.tmp nbtk-enum-types.h) && \
+	rm -f $@.tmp && \
+	echo timestamp > $(@F)
+
+nbtk-enum-types.c: stamp-nbtk-enum-types.h nbtk/nbtk-enum-types.c.in
+	$(AM_V_GEN) ( cd $(srcdir) && \
+	  $(GLIB_MKENUMS) \
+	    --template nbtk/nbtk-enum-types.c.in \
+	  $(nbtk_source_h) ) >> $@.tmp && \
+	cp $@.tmp $@ && \
+	rm -f $@.tmp
+
+# please, keep this sorted alphabetically
+nbtk_source_h =                  \
+    nbtk/nbtk-adjustment.h            \
+    nbtk/nbtk-bin.h                   \
+    nbtk/nbtk-box-layout.h            \
+    nbtk/nbtk-box-layout-child.h      \
+    nbtk/nbtk-button.h                \
+    nbtk/nbtk-clipboard.h             \
+    nbtk/nbtk-entry.h                 \
+    nbtk/nbtk-label.h                 \
+    nbtk/nbtk-private.h               \
+    nbtk/nbtk-scrollable.h            \
+    nbtk/nbtk-scroll-bar.h            \
+    nbtk/nbtk-scroll-view.h           \
+    nbtk/nbtk-subtexture.h            \
+    nbtk/nbtk-texture-cache.h         \
+    nbtk/nbtk-texture-frame.h         \
+    nbtk/nbtk-tooltip.h               \
+    nbtk/nbtk-types.h                 \
+    nbtk/nbtk-widget.h                \
+    $(NULL)
+
+# please, keep this sorted alphabetically
+nbtk_source_c =                  \
+    nbtk/nbtk-adjustment.c           \
+    nbtk/nbtk-bin.c                   \
+    nbtk/nbtk-box-layout.c            \
+    nbtk/nbtk-box-layout-child.c      \
+    nbtk/nbtk-button.c                \
+    nbtk/nbtk-clipboard.c             \
+    nbtk/nbtk-entry.c                 \
+    nbtk/nbtk-label.c                 \
+    nbtk/nbtk-private.c               \
+    nbtk/nbtk-scrollable.c            \
+    nbtk/nbtk-scroll-bar.c            \
+    nbtk/nbtk-scroll-view.c           \
+    nbtk/nbtk-subtexture.c            \
+    nbtk/nbtk-texture-cache.c         \
+    nbtk/nbtk-texture-frame.c         \
+    nbtk/nbtk-tooltip.c               \
+    nbtk/nbtk-widget.c                \
+    $(NULL)
+
+noinst_LTLIBRARIES += libnbtk-1.0.la
+
+libnbtk_1_0_la_LIBADD = $(NBTK_LIBS)
+libnbtk_1_0_la_SOURCES = \
+    $(nbtk_source_c) \
+    $(nbtk_source_h) \
+    $(nbtk_built_sources) \
+    $(NULL)
+libnbtk_1_0_la_CPPFLAGS = $(nbtk_cflags)
+libnbtk_1_0_la_LDFLAGS = $(LDADD)

src/Makefile-toolkit.am

@@ -0,0 +1,36 @@
+toolkit_cflags =				\
+    -I$(top_srcdir)/src				\
+    -DPREFIX=\""$(prefix)"\"			\
+    -DLIBDIR=\""$(libdir)"\"			\
+    -DG_DISABLE_DEPRECATED			\
+    -DG_LOG_DOMAIN=\"Shell\"			\
+    $(TOOLKIT_CFLAGS)
+
+# please, keep this sorted alphabetically
+toolkit_sources =				\
+	toolkit/shell-border-image.c		\
+	toolkit/shell-border-image.h		\
+	toolkit/shell-theme.c			\
+	toolkit/shell-theme.h			\
+	toolkit/shell-theme-context.c		\
+	toolkit/shell-theme-context.h		\
+	toolkit/shell-theme-node.c		\
+	toolkit/shell-theme-node.h		\
+	toolkit/shell-theme-private.h
+
+non_gir_toolkit_sources =			\
+	toolkit/shell-theme-private.h
+
+noinst_LTLIBRARIES += libshell-toolkit.la
+
+libshell_toolkit_la_LIBADD = $(TOOLKIT_LIBS)
+libshell_toolkit_la_SOURCES = $(toolkit_sources) $(toolkit_built_sources)
+libshell_toolkit_la_CPPFLAGS = $(toolkit_cflags)
+libshell_toolkit_la_LDFLAGS = $(LDADD)
+
+noinst_PROGRAMS += test-theme
+
+test_theme_CPPFLAGS = $(toolkit_cflags)
+test_theme_LDADD = libshell-toolkit.la
+
+test_theme_SOURCES = toolkit/test-theme.c

src/Makefile.am

@@ -4,6 +4,7 @@ CLEANFILES =
 EXTRA_DIST =
 libexec_PROGRAMS =
 noinst_LTLIBRARIES =
+noinst_PROGRAMS =
 
 .AUTOPARALLEL:
 
@@ -24,6 +25,8 @@ EXTRA_DIST += gnome-shell.in
 
 include Makefile-big.am
 include Makefile-gdmuser.am
+include Makefile-nbtk.am
+include Makefile-toolkit.am
 include Makefile-tray.am
 
 gnome_shell_cflags =				\
@@ -114,7 +117,7 @@ if BUILD_RECORDER
 libgnome_shell_la_SOURCES += $(shell_recorder_sources)
 non_gir_sources += $(shell_recorder_non_gir_sources)
 
-noinst_PROGRAMS = test-recorder
+noinst_PROGRAMS += test-recorder
 
 test_recorder_CPPFLAGS = $(TEST_SHELL_RECORDER_CFLAGS)
 test_recorder_LDADD = $(TEST_SHELL_RECORDER_LIBS)
@@ -125,7 +128,7 @@ test_recorder_SOURCES =     \
 endif BUILD_RECORDER
 
 libgnome_shell_la_gir_sources = \
-	$(filter-out $(non_gir_sources), $(libgnome_shell_la_SOURCES))
+	$(filter-out $(non_gir_sources) $(non_gir_toolkit_sources), $(libgnome_shell_la_SOURCES) $(toolkit_sources))
 
 shell-marshal.h: stamp-shell-marshal.h
 	@true
@@ -152,14 +155,16 @@ libgnome_shell_la_LIBADD =	\
 	$(MUTTER_PLUGIN_LIBS)	\
         $(LIBGNOMEUI_LIBS)      \
 	libbig-1.0.la		\
+	libnbtk-1.0.la       	\
 	libgdmuser-1.0.la	\
+	libshell-toolkit.la	\
 	libtray.la
 libgnome_shell_la_CPPFLAGS = $(gnome_shell_cflags)
 
 typelibdir = $(pkglibdir)
-typelib_DATA = Shell-0.1.typelib Big-1.0.typelib
+typelib_DATA = Shell-0.1.typelib Big-1.0.typelib Nbtk-1.0.typelib
 
-Shell-0.1.gir: $(mutter) $(G_IR_SCANNER) Big-1.0.gir libgnome-shell.la Makefile
+Shell-0.1.gir: $(mutter) $(G_IR_SCANNER) Big-1.0.gir Nbtk-1.0.gir libgnome-shell.la Makefile
 	$(AM_V_GEN) $(G_IR_SCANNER)			\
 		--namespace=Shell			\
 		--nsversion=0.1				\
@@ -169,6 +174,7 @@ Shell-0.1.gir: $(mutter) $(G_IR_SCANNER) Big-1.0.gir libgnome-shell.la Makefile
 		--libtool="$(LIBTOOL)"    \
 		--add-include-path=$(builddir)     \
 		--include=Big-1.0     \
+		--include=Nbtk-1.0     \
 		--program=mutter			\
 	        --program-arg=--mutter-plugins=$$(pwd)/libgnome-shell.la \
 		$(addprefix $(srcdir)/,$(libgnome_shell_la_gir_sources)) \
@@ -179,14 +185,14 @@ CLEANFILES += Shell-0.1.gir
 # The dependency on libgnome-shell.la here is because g-ir-compiler opens it
 # (not the fake library, since we've already done the rewriting)
 Shell-0.1.typelib: libgnome-shell.la Shell-0.1.gir Big-1.0.gir
-	$(AM_V_GEN) LD_LIBRARY_PATH=.$${LD_LIBRARY_PATH:+:$$LD_LIBRARY_PATH}	\
+	$(AM_V_GEN) \
 		$(G_IR_COMPILER)						\
 			--includedir=.						\
 			--includedir=$(MUTTER_LIB_DIR)/mutter/			\
 		Shell-0.1.gir -o $@
 CLEANFILES += Shell-0.1.typelib
 
-Big-1.0.gir: $(mutter) $(G_IR_SCANNER) libgnome-shell.la libbig-1.0.la $(srcdir)/big-enum-types.h Makefile
+Big-1.0.gir: $(mutter) $(G_IR_SCANNER) libgnome-shell.la libbig-1.0.la Makefile
 	$(AM_V_GEN) $(G_IR_SCANNER)			\
 		--namespace=Big				\
 		--nsversion=1.0				\
@@ -203,6 +209,54 @@ Big-1.0.gir: $(mutter) $(G_IR_SCANNER) libgnome-shell.la libbig-1.0.la $(srcdir)
 CLEANFILES += Big-1.0.gir
 
 Big-1.0.typelib: libbig-1.0.la Big-1.0.gir
-	$(AM_V_GEN) LD_LIBRARY_PATH=.$${LD_LIBRARY_PATH:+:$$LD_LIBRARY_PATH} \
+	$(AM_V_GEN) $(G_IR_COMPILER) Big-1.0.gir -o $@
-		$(G_IR_COMPILER) Big-1.0.gir -o $@
 CLEANFILES += Big-1.0.typelib
+
+toolkit_gir_sources = \
+	$(filter-out $(non_gir_toolkit_sources), $(toolkit_sources))
+
+# Since the Shell namepace includes both the code in toolkit/ that our fork of
+# NBTK depends upon and the code in this directory that depends on NBTK, We have a
+# circular dependency when generating the girs and typelibs. We work around this
+# by generating a Toolkit gir, using it to build the Nbtk gir then sed'ing the
+# reference out of the generated gir.
+Toolkit-0.1.gir: $(mutter) $(G_IR_SCANNER) libgnome-shell.la libshell-toolkit.la Makefile
+	$(AM_V_GEN) $(G_IR_SCANNER)						\
+	        --namespace=Shell						\
+		--nsversion=0.1							\
+	        --include=Clutter-1.0						\
+	        --libtool="$(LIBTOOL)"						\
+	        --program=mutter						\
+		--program-arg=--mutter-plugins=$$(pwd)/libgnome-shell.la	\
+	        $(addprefix $(srcdir)/,$(toolkit_gir_sources))			\
+	        $(TOOLKIT_CFLAGS)						\
+	        -o $@
+CLEANFILES += Toolkit-1.0.gir
+
+Nbtk-1.0.gir: $(mutter) $(G_IR_SCANNER) Toolkit-0.1.gir libgnome-shell.la libnbtk-1.0.la Makefile
+	$(AM_V_GEN) $(G_IR_SCANNER)						\
+	        --namespace=Nbtk						\
+	        --nsversion=1.0							\
+	        --include=Clutter-1.0						\
+	        --include=Gtk-2.0						\
+		--add-include-path=$(builddir)     				\
+		--include=Toolkit-0.1						\
+	        --libtool="$(LIBTOOL)"						\
+	        --program=mutter						\
+		--program-arg=--mutter-plugins=$$(pwd)/libgnome-shell.la	\
+	        -DNBTK_COMPILATION						\
+	        $(addprefix $(srcdir)/,$(nbtk_source_h))			\
+	        $(addprefix $(srcdir)/,$(nbtk_source_c))			\
+	        $(srcdir)/nbtk-enum-types.h					\
+	        $(NBTK_CFLAGS)							\
+	        -o $@.tmp &&							\
+	sed -e '/"Toolkit"/d' < $@.tmp > $@
+CLEANFILES += Nbtk-1.0.gir
+
+Nbtk-1.0.typelib: Nbtk-1.0.gir
+	$(AM_V_GEN) $(G_IR_COMPILER)						\
+		--includedir=.							\
+		--includedir=$(MUTTER_LIB_DIR)/mutter/				\
+		$< -o $@
+
+CLEANFILES += Nbtk-1.0.typelib

src/big/rectangle.c

@@ -268,6 +268,52 @@ corner_get(guint         radius,
     return corner;
 }
 
+/* To match the CSS specification, we want the border to look like it was
+ * drawn over the background. But actually drawing the border over the
+ * background will produce slightly bad antialiasing at the edges, so
+ * compute the effective border color instead.
+ */
+#define NORM(x) (t = (x) + 127, (t + (t >> 8)) >> 8)
+#define MULT(c,a) NORM(c*a)
+
+static void
+premultiply (ClutterColor *color)
+{
+    guint t;
+    color->red = MULT (color->red, color->alpha);
+    color->green = MULT (color->green, color->alpha);
+    color->blue = MULT (color->blue, color->alpha);
+}
+
+static void
+unpremultiply (ClutterColor *color)
+{
+    if (color->alpha != 0) {
+        color->red = (color->red * 255 + 127) / color->alpha;
+        color->green = (color->green * 255 + 127) / color->alpha;
+        color->blue = (color->blue * 255 + 127) / color->alpha;
+    }
+}
+
+static void
+over (const ClutterColor *source,
+      const ClutterColor *destination,
+      ClutterColor       *result)
+{
+    guint t;
+    ClutterColor src = *source;
+    ClutterColor dst = *destination;
+    premultiply (&src);
+    premultiply (&dst);
+
+    result->alpha = src.alpha + NORM ((255 - src.alpha) * dst.alpha);
+    result->red   = src.red +   NORM ((255 - src.alpha) * dst.red);
+    result->green = src.green + NORM ((255 - src.alpha) * dst.green);
+    result->blue  = src.blue +  NORM ((255 - src.alpha) * dst.blue);
+
+    unpremultiply (result);
+}
+
 static void
 big_rectangle_update_corners(BigRectangle *rectangle)
 {
@@ -278,6 +324,7 @@ big_rectangle_update_corners(BigRectangle *rectangle)
     if (rectangle->radius != 0) {
         ClutterColor *color;
         ClutterColor *border_color;
+        ClutterColor effective_border;
         guint border_width;
 
         g_object_get(rectangle,
@@ -286,10 +333,12 @@ big_rectangle_update_corners(BigRectangle *rectangle)
                      "color", &color,
                      NULL);
 
+        over (border_color, color, &effective_border);
+
         corner = corner_get(rectangle->radius,
                             color,
                             border_width,
-                            border_color);
+                            &effective_border);
 
         clutter_color_free(border_color);
         clutter_color_free(color);
@@ -329,12 +378,10 @@ big_rectangle_paint(ClutterActor *actor)
 
     rectangle = BIG_RECTANGLE(actor);
 
-    if (rectangle->radius == 0) {
+    /* We can't chain up, even when we the radius is 0, because of the different
-        /* In that case we are no different than our parent class,
+     * interpretation of the border/background relationship here than for
-         * so don't bother */
+     * ClutterRectangle.
-        CLUTTER_ACTOR_CLASS(big_rectangle_parent_class)->paint(actor);
+     */
-        return;
-    }
 
     if (rectangle->corners_dirty)
         big_rectangle_update_corners(rectangle);
@@ -345,6 +392,9 @@ big_rectangle_paint(ClutterActor *actor)
                  "color", &color,
                  NULL);
 
+    if (border_color->alpha == 0 && color->alpha == 0)
+        goto out;
+
     actor_opacity = clutter_actor_get_paint_opacity (actor);
 
     clutter_actor_get_allocation_box(actor, &box);
@@ -358,6 +408,11 @@ big_rectangle_paint(ClutterActor *actor)
 
     radius = rectangle->radius;
 
+    /* Optimization; if the border is transparent, it just looks like part of
+     * the background */
+    if (radius == 0 && border_color->alpha == 0)
+        border_width = 0;
+
     max = MAX(border_width, radius);
 
     if (radius != 0) {
@@ -393,18 +448,22 @@ big_rectangle_paint(ClutterActor *actor)
     }
 
     if (border_width != 0) {
+        ClutterColor effective_border;
+        over (border_color, color, &effective_border);
+
         if (!rectangle->border_material)
             rectangle->border_material = cogl_material_new ();
 
         cogl_color_set_from_4ub(&tmp_color,
-                                border_color->red,
+                                effective_border.red,
-                                border_color->green,
+                                effective_border.green,
-                                border_color->blue,
+                                effective_border.blue,
-                                actor_opacity * border_color->alpha / 255);
+                                actor_opacity * effective_border.alpha / 255);
         cogl_color_premultiply (&tmp_color);
         cogl_material_set_color(rectangle->border_material, &tmp_color);
         cogl_set_source(rectangle->border_material);
 
+        if (radius > 0) { /* skip corners */
             /* NORTH */
             cogl_rectangle(max, 0,
                            width - max, border_width);
@@ -420,6 +479,23 @@ big_rectangle_paint(ClutterActor *actor)
             /* WEST */
             cogl_rectangle(0, max,
                            border_width, height - max);
+        } else { /* include corners */
+            /* NORTH */
+            cogl_rectangle(0, 0,
+                           width, border_width);
+
+            /* EAST */
+            cogl_rectangle(width - border_width, border_width,
+                           width, height - border_width);
+
+            /* SOUTH */
+            cogl_rectangle(0, height - border_width,
+                           width, height);
+
+            /* WEST */
+            cogl_rectangle(0, border_width,
+                           border_width, height - border_width);
+        }
     }
 
     if (!rectangle->background_material)
@@ -455,6 +531,7 @@ big_rectangle_paint(ClutterActor *actor)
     cogl_rectangle(border_width, max,
                    width - border_width, height - max);
 
+out:
     clutter_color_free(border_color);
     clutter_color_free(color);
 }

src/metacity-symbols.c

@@ -1,64 +0,0 @@
-/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
-
-#include <mutter-plugin.h>
-
-ClutterActor *
-mutter_plugin_get_overlay_group (MutterPlugin *plugin)
-{
-  return NULL;
-}
-
-ClutterActor *
-mutter_plugin_get_stage (MutterPlugin *plugin)
-{
-  return NULL;
-}
-
-GList *
-mutter_plugin_get_windows (MutterPlugin *plugin)
-{
-  return NULL;
-}
-
-void
-mutter_plugin_query_screen_size (MutterPlugin *plugin,
-                                 int          *width,
-                                 int          *height)
-{
-}
-
-void
-mutter_plugin_set_stage_input_area (MutterPlugin *plugin,
-                                    gint x, gint y, gint width, gint height)
-{
-}
-
-MetaScreen *
-mutter_plugin_get_screen (MutterPlugin *plugin)
-{
-  return NULL;
-}
-
-ClutterActor *
-mutter_plugin_get_window_group (MutterPlugin *plugin)
-{
-  return NULL;
-}
-
-Display *
-meta_display_get_xdisplay (MetaDisplay *display)
-{
-  return NULL;
-}
-
-MetaDisplay *
-meta_screen_get_display (MetaScreen *display)
-{
-  return NULL;
-}
-
-Window
-meta_screen_get_xroot (MetaScreen *display)
-{
-  return None;
-}

src/nbtk/nbtk-adjustment.c

@@ -0,0 +1,768 @@
+/*
+ * nbtk-adjustment.c: Adjustment object
+ *
+ * Copyright (C) 2008 OpenedHand
+ * Copyright (c) 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by: Chris Lord <chris@openedhand.com>, inspired by GtkAdjustment
+ * Port to Nbtk by: Robert Staudinger <robsta@openedhand.com>
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <glib-object.h>
+#include <clutter/clutter.h>
+
+#include "nbtk-adjustment.h"
+#include "nbtk-marshal.h"
+#include "nbtk-private.h"
+
+G_DEFINE_TYPE (NbtkAdjustment, nbtk_adjustment, G_TYPE_OBJECT)
+
+#define ADJUSTMENT_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NBTK_TYPE_ADJUSTMENT, NbtkAdjustmentPrivate))
+
+struct _NbtkAdjustmentPrivate
+{
+  /* Do not sanity-check values while constructing,
+   * not all properties may be set yet. */
+  gboolean is_constructing : 1;
+
+  gdouble lower;
+  gdouble upper;
+  gdouble value;
+  gdouble step_increment;
+  gdouble page_increment;
+  gdouble page_size;
+
+  /* For interpolation */
+  ClutterTimeline *interpolation;
+  gdouble old_position;
+  gdouble new_position;
+
+  /* For elasticity */
+  gboolean      elastic;
+  guint         bounce_source;
+  ClutterAlpha *bounce_alpha;
+};
+
+enum
+{
+  PROP_0,
+
+  PROP_LOWER,
+  PROP_UPPER,
+  PROP_VALUE,
+  PROP_STEP_INC,
+  PROP_PAGE_INC,
+  PROP_PAGE_SIZE,
+
+  PROP_ELASTIC,
+};
+
+enum
+{
+  CHANGED,
+
+  LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0, };
+
+static gboolean nbtk_adjustment_set_lower          (NbtkAdjustment *adjustment,
+                                                    gdouble         lower);
+static gboolean nbtk_adjustment_set_upper          (NbtkAdjustment *adjustment,
+                                                    gdouble         upper);
+static gboolean nbtk_adjustment_set_step_increment (NbtkAdjustment *adjustment,
+                                                    gdouble         step);
+static gboolean nbtk_adjustment_set_page_increment (NbtkAdjustment *adjustment,
+                                                    gdouble         page);
+static gboolean nbtk_adjustment_set_page_size      (NbtkAdjustment *adjustment,
+                                                    gdouble         size);
+
+static void
+nbtk_adjustment_constructed (GObject *object)
+{
+  GObjectClass *g_class;
+  NbtkAdjustment *self = NBTK_ADJUSTMENT (object);
+
+  g_class = G_OBJECT_CLASS (nbtk_adjustment_parent_class);
+  /* The docs say we're suppose to chain up, but would crash without
+   * some extra care. */
+  if (g_class && g_class->constructed &&
+      g_class->constructed != nbtk_adjustment_constructed)
+    {
+      g_class->constructed (object);
+    }
+
+  NBTK_ADJUSTMENT (self)->priv->is_constructing = FALSE;
+  nbtk_adjustment_clamp_page (self, self->priv->lower, self->priv->upper);
+}
+
+static void
+nbtk_adjustment_get_property (GObject    *gobject,
+                              guint       prop_id,
+                              GValue     *value,
+                              GParamSpec *pspec)
+{
+  NbtkAdjustmentPrivate *priv = NBTK_ADJUSTMENT (gobject)->priv;
+
+  switch (prop_id)
+    {
+    case PROP_LOWER:
+      g_value_set_double (value, priv->lower);
+      break;
+
+    case PROP_UPPER:
+      g_value_set_double (value, priv->upper);
+      break;
+
+    case PROP_VALUE:
+      g_value_set_double (value, priv->value);
+      break;
+
+    case PROP_STEP_INC:
+      g_value_set_double (value, priv->step_increment);
+      break;
+
+    case PROP_PAGE_INC:
+      g_value_set_double (value, priv->page_increment);
+      break;
+
+    case PROP_PAGE_SIZE:
+      g_value_set_double (value, priv->page_size);
+      break;
+
+    case PROP_ELASTIC:
+      g_value_set_boolean (value, priv->elastic);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+nbtk_adjustment_set_property (GObject      *gobject,
+                              guint         prop_id,
+                              const GValue *value,
+                              GParamSpec   *pspec)
+{
+  NbtkAdjustment *adj = NBTK_ADJUSTMENT (gobject);
+
+  switch (prop_id)
+    {
+    case PROP_LOWER:
+      nbtk_adjustment_set_lower (adj, g_value_get_double (value));
+      break;
+
+    case PROP_UPPER:
+      nbtk_adjustment_set_upper (adj, g_value_get_double (value));
+      break;
+
+    case PROP_VALUE:
+      nbtk_adjustment_set_value (adj, g_value_get_double (value));
+      break;
+
+    case PROP_STEP_INC:
+      nbtk_adjustment_set_step_increment (adj, g_value_get_double (value));
+      break;
+
+    case PROP_PAGE_INC:
+      nbtk_adjustment_set_page_increment (adj, g_value_get_double (value));
+      break;
+
+    case PROP_PAGE_SIZE:
+      nbtk_adjustment_set_page_size (adj, g_value_get_double (value));
+      break;
+
+    case PROP_ELASTIC:
+      nbtk_adjustment_set_elastic (adj, g_value_get_boolean (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+stop_interpolation (NbtkAdjustment *adjustment)
+{
+  NbtkAdjustmentPrivate *priv = adjustment->priv;
+
+  if (priv->interpolation)
+    {
+      clutter_timeline_stop (priv->interpolation);
+      g_object_unref (priv->interpolation);
+      priv->interpolation = NULL;
+
+      if (priv->bounce_alpha)
+        {
+          g_object_unref (priv->bounce_alpha);
+          priv->bounce_alpha = NULL;
+        }
+    }
+
+  if (priv->bounce_source)
+    {
+      g_source_remove (priv->bounce_source);
+      priv->bounce_source = 0;
+    }
+}
+
+static void
+nbtk_adjustment_dispose (GObject *object)
+{
+  stop_interpolation (NBTK_ADJUSTMENT (object));
+
+  G_OBJECT_CLASS (nbtk_adjustment_parent_class)->dispose (object);
+}
+
+static void
+nbtk_adjustment_class_init (NbtkAdjustmentClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  g_type_class_add_private (klass, sizeof (NbtkAdjustmentPrivate));
+
+  object_class->constructed = nbtk_adjustment_constructed;
+  object_class->get_property = nbtk_adjustment_get_property;
+  object_class->set_property = nbtk_adjustment_set_property;
+  object_class->dispose = nbtk_adjustment_dispose;
+
+  g_object_class_install_property (object_class,
+                                   PROP_LOWER,
+                                   g_param_spec_double ("lower",
+                                                        "Lower",
+                                                        "Lower bound",
+                                                        -G_MAXDOUBLE,
+                                                        G_MAXDOUBLE,
+                                                        0.0,
+                                                        NBTK_PARAM_READWRITE |
+                                                        G_PARAM_CONSTRUCT));
+  g_object_class_install_property (object_class,
+                                   PROP_UPPER,
+                                   g_param_spec_double ("upper",
+                                                        "Upper",
+                                                        "Upper bound",
+                                                        -G_MAXDOUBLE,
+                                                        G_MAXDOUBLE,
+                                                        0.0,
+                                                        NBTK_PARAM_READWRITE |
+                                                        G_PARAM_CONSTRUCT));
+  g_object_class_install_property (object_class,
+                                   PROP_VALUE,
+                                   g_param_spec_double ("value",
+                                                        "Value",
+                                                        "Current value",
+                                                        -G_MAXDOUBLE,
+                                                        G_MAXDOUBLE,
+                                                        0.0,
+                                                        NBTK_PARAM_READWRITE |
+                                                        G_PARAM_CONSTRUCT));
+  g_object_class_install_property (object_class,
+                                   PROP_STEP_INC,
+                                   g_param_spec_double ("step-increment",
+                                                        "Step Increment",
+                                                        "Step increment",
+                                                        0.0,
+                                                        G_MAXDOUBLE,
+                                                        0.0,
+                                                        NBTK_PARAM_READWRITE |
+                                                        G_PARAM_CONSTRUCT));
+  g_object_class_install_property (object_class,
+                                   PROP_PAGE_INC,
+                                   g_param_spec_double ("page-increment",
+                                                        "Page Increment",
+                                                        "Page increment",
+                                                        0.0,
+                                                        G_MAXDOUBLE,
+                                                        0.0,
+                                                        NBTK_PARAM_READWRITE |
+                                                        G_PARAM_CONSTRUCT));
+  g_object_class_install_property (object_class,
+                                   PROP_PAGE_SIZE,
+                                   g_param_spec_double ("page-size",
+                                                        "Page Size",
+                                                        "Page size",
+                                                        0.0,
+                                                        G_MAXDOUBLE,
+                                                        0.0,
+                                                        NBTK_PARAM_READWRITE |
+                                                        G_PARAM_CONSTRUCT));
+  g_object_class_install_property (object_class,
+                                   PROP_ELASTIC,
+                                   g_param_spec_boolean ("elastic",
+                                                         "Elastic",
+                                                         "Make interpolation "
+                                                         "behave in an "
+                                                         "'elastic' way and "
+                                                         "stop clamping value.",
+                                                         FALSE,
+                                                        NBTK_PARAM_READWRITE |
+                                                        G_PARAM_CONSTRUCT));
+
+  /**
+   * NbtkAdjustment::changed:
+   *
+   * Emitted when any of the adjustment values have changed
+   */
+  signals[CHANGED] =
+    g_signal_new ("changed",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_LAST,
+                  G_STRUCT_OFFSET (NbtkAdjustmentClass, changed),
+                  NULL, NULL,
+                  _nbtk_marshal_VOID__VOID,
+                  G_TYPE_NONE, 0);
+}
+
+static void
+nbtk_adjustment_init (NbtkAdjustment *self)
+{
+  self->priv = ADJUSTMENT_PRIVATE (self);
+
+  self->priv->is_constructing = TRUE;
+}
+
+NbtkAdjustment *
+nbtk_adjustment_new (gdouble value,
+                     gdouble lower,
+                     gdouble upper,
+                     gdouble step_increment,
+                     gdouble page_increment,
+                     gdouble page_size)
+{
+  return g_object_new (NBTK_TYPE_ADJUSTMENT,
+                       "value", value,
+                       "lower", lower,
+                       "upper", upper,
+                       "step-increment", step_increment,
+                       "page-increment", page_increment,
+                       "page-size", page_size,
+                       NULL);
+}
+
+gdouble
+nbtk_adjustment_get_value (NbtkAdjustment *adjustment)
+{
+  NbtkAdjustmentPrivate *priv;
+
+  g_return_val_if_fail (NBTK_IS_ADJUSTMENT (adjustment), 0);
+
+  priv = adjustment->priv;
+
+  if (priv->interpolation)
+    {
+      return MAX (priv->lower,
+                  MIN (priv->upper - priv->page_size,
+                       priv->new_position));
+    }
+  else
+    return priv->value;
+}
+
+void
+nbtk_adjustment_set_value (NbtkAdjustment *adjustment,
+                           gdouble         value)
+{
+  NbtkAdjustmentPrivate *priv;
+
+  g_return_if_fail (NBTK_IS_ADJUSTMENT (adjustment));
+
+  priv = adjustment->priv;
+
+  stop_interpolation (adjustment);
+
+  /* Defer clamp until after construction. */
+  if (!priv->is_constructing)
+    {
+      if (!priv->elastic)
+        value = CLAMP (value,
+                       priv->lower,
+                       MAX (priv->lower, priv->upper - priv->page_size));
+    }
+
+  if (priv->value != value)
+    {
+      priv->value = value;
+
+      g_object_notify (G_OBJECT (adjustment), "value");
+    }
+}
+
+void
+nbtk_adjustment_clamp_page (NbtkAdjustment *adjustment,
+                            gdouble         lower,
+                            gdouble         upper)
+{
+  NbtkAdjustmentPrivate *priv;
+  gboolean changed;
+
+  g_return_if_fail (NBTK_IS_ADJUSTMENT (adjustment));
+
+  priv = adjustment->priv;
+
+  stop_interpolation (adjustment);
+
+  lower = CLAMP (lower, priv->lower, priv->upper - priv->page_size);
+  upper = CLAMP (upper, priv->lower + priv->page_size, priv->upper);
+
+  changed = FALSE;
+
+  if (priv->value + priv->page_size > upper)
+    {
+      priv->value = upper - priv->page_size;
+      changed = TRUE;
+    }
+
+  if (priv->value < lower)
+    {
+      priv->value = lower;
+      changed = TRUE;
+    }
+
+  if (changed)
+    g_object_notify (G_OBJECT (adjustment), "value");
+}
+
+static gboolean
+nbtk_adjustment_set_lower (NbtkAdjustment *adjustment,
+                           gdouble         lower)
+{
+  NbtkAdjustmentPrivate *priv = adjustment->priv;
+
+  if (priv->lower != lower)
+    {
+      priv->lower = lower;
+
+      g_signal_emit (adjustment, signals[CHANGED], 0);
+
+      g_object_notify (G_OBJECT (adjustment), "lower");
+
+      /* Defer clamp until after construction. */
+      if (!priv->is_constructing)
+        nbtk_adjustment_clamp_page (adjustment, priv->lower, priv->upper);
+
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+static gboolean
+nbtk_adjustment_set_upper (NbtkAdjustment *adjustment,
+                           gdouble         upper)
+{
+  NbtkAdjustmentPrivate *priv = adjustment->priv;
+
+  if (priv->upper != upper)
+    {
+      priv->upper = upper;
+
+      g_signal_emit (adjustment, signals[CHANGED], 0);
+
+      g_object_notify (G_OBJECT (adjustment), "upper");
+
+      /* Defer clamp until after construction. */
+      if (!priv->is_constructing)
+        nbtk_adjustment_clamp_page (adjustment, priv->lower, priv->upper);
+
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+static gboolean
+nbtk_adjustment_set_step_increment (NbtkAdjustment *adjustment,
+                                    gdouble         step)
+{
+  NbtkAdjustmentPrivate *priv = adjustment->priv;
+
+  if (priv->step_increment != step)
+    {
+      priv->step_increment = step;
+
+      g_signal_emit (adjustment, signals[CHANGED], 0);
+
+      g_object_notify (G_OBJECT (adjustment), "step-increment");
+
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+static gboolean
+nbtk_adjustment_set_page_increment (NbtkAdjustment *adjustment,
+                                    gdouble         page)
+{
+  NbtkAdjustmentPrivate *priv = adjustment->priv;
+
+  if (priv->page_increment != page)
+    {
+      priv->page_increment = page;
+
+      g_signal_emit (adjustment, signals[CHANGED], 0);
+
+      g_object_notify (G_OBJECT (adjustment), "page-increment");
+
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+static gboolean
+nbtk_adjustment_set_page_size (NbtkAdjustment *adjustment,
+                               gdouble         size)
+{
+  NbtkAdjustmentPrivate *priv = adjustment->priv;
+
+  if (priv->page_size != size)
+    {
+      priv->page_size = size;
+
+      g_signal_emit (adjustment, signals[CHANGED], 0);
+
+      g_object_notify (G_OBJECT (adjustment), "page_size");
+
+      /* Well explicitely clamp after construction. */
+      if (!priv->is_constructing)
+        nbtk_adjustment_clamp_page (adjustment, priv->lower, priv->upper);
+
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+void
+nbtk_adjustment_set_values (NbtkAdjustment *adjustment,
+                            gdouble         value,
+                            gdouble         lower,
+                            gdouble         upper,
+                            gdouble         step_increment,
+                            gdouble         page_increment,
+                            gdouble         page_size)
+{
+  NbtkAdjustmentPrivate *priv;
+  gboolean emit_changed = FALSE;
+
+  g_return_if_fail (NBTK_IS_ADJUSTMENT (adjustment));
+  g_return_if_fail (page_size >= 0 && page_size <= G_MAXDOUBLE);
+  g_return_if_fail (step_increment >= 0 && step_increment <= G_MAXDOUBLE);
+  g_return_if_fail (page_increment >= 0 && page_increment <= G_MAXDOUBLE);
+
+  priv = adjustment->priv;
+
+  stop_interpolation (adjustment);
+
+  emit_changed = FALSE;
+
+  g_object_freeze_notify (G_OBJECT (adjustment));
+
+  emit_changed |= nbtk_adjustment_set_lower (adjustment, lower);
+  emit_changed |= nbtk_adjustment_set_upper (adjustment, upper);
+  emit_changed |= nbtk_adjustment_set_step_increment (adjustment, step_increment);
+  emit_changed |= nbtk_adjustment_set_page_increment (adjustment, page_increment);
+  emit_changed |= nbtk_adjustment_set_page_size (adjustment, page_size);
+
+  if (value != priv->value)
+    {
+      nbtk_adjustment_set_value (adjustment, value);
+      emit_changed = TRUE;
+    }
+
+  if (emit_changed)
+    g_signal_emit (G_OBJECT (adjustment), signals[CHANGED], 0);
+
+  g_object_thaw_notify (G_OBJECT (adjustment));
+}
+
+void
+nbtk_adjustment_get_values (NbtkAdjustment *adjustment,
+                            gdouble        *value,
+                            gdouble        *lower,
+                            gdouble        *upper,
+                            gdouble        *step_increment,
+                            gdouble        *page_increment,
+                            gdouble        *page_size)
+{
+  NbtkAdjustmentPrivate *priv;
+
+  g_return_if_fail (NBTK_IS_ADJUSTMENT (adjustment));
+
+  priv = adjustment->priv;
+
+  if (lower)
+    *lower = priv->lower;
+
+  if (upper)
+    *upper = priv->upper;
+
+  if (value)
+    *value = nbtk_adjustment_get_value (adjustment);
+
+  if (step_increment)
+    *step_increment = priv->step_increment;
+
+  if (page_increment)
+    *page_increment = priv->page_increment;
+
+  if (page_size)
+    *page_size = priv->page_size;
+}
+
+static void
+interpolation_new_frame_cb (ClutterTimeline *timeline,
+                            guint            msecs,
+                            NbtkAdjustment  *adjustment)
+{
+  NbtkAdjustmentPrivate *priv = adjustment->priv;
+
+  priv->interpolation = NULL;
+
+  if (priv->elastic)
+    {
+      gdouble progress = clutter_alpha_get_alpha (priv->bounce_alpha) / 1.0;
+      gdouble dx = priv->old_position
+                 + (priv->new_position - priv->old_position)
+                 * progress;
+
+      nbtk_adjustment_set_value (adjustment, dx);
+    }
+  else
+    nbtk_adjustment_set_value (adjustment,
+                               priv->old_position +
+                               (priv->new_position - priv->old_position) *
+                               clutter_timeline_get_progress (timeline));
+
+  priv->interpolation = timeline;
+}
+
+static void
+interpolation_completed_cb (ClutterTimeline *timeline,
+                            NbtkAdjustment  *adjustment)
+{
+  NbtkAdjustmentPrivate *priv = adjustment->priv;
+
+  stop_interpolation (adjustment);
+  nbtk_adjustment_set_value (adjustment, priv->new_position);
+}
+
+/* Note, there's super-optimal code that does a similar thing in
+ * clutter-alpha.c
+ *
+ * Tried this instead of CLUTTER_ALPHA_SINE_INC, but I think SINE_INC looks
+ * better. Leaving code here in case this is revisited.
+ */
+/*
+static guint32
+bounce_alpha_func (ClutterAlpha *alpha,
+                   gpointer      user_data)
+{
+  ClutterFixed progress, angle;
+  ClutterTimeline *timeline = clutter_alpha_get_timeline (alpha);
+
+  progress = clutter_timeline_get_progressx (timeline);
+  angle = clutter_qmulx (CFX_PI_2 + CFX_PI_4/2, progress);
+
+  return clutter_sinx (angle) +
+    (CFX_ONE - clutter_sinx (CFX_PI_2 + CFX_PI_4/2));
+}
+*/
+
+void
+nbtk_adjustment_interpolate (NbtkAdjustment *adjustment,
+                             gdouble         value,
+                             guint           duration)
+{
+  NbtkAdjustmentPrivate *priv = adjustment->priv;
+
+  stop_interpolation (adjustment);
+
+  if (duration <= 1)
+    {
+      nbtk_adjustment_set_value (adjustment, value);
+      return;
+    }
+
+  priv->old_position = priv->value;
+  priv->new_position = value;
+
+  priv->interpolation = clutter_timeline_new (duration);
+
+  if (priv->elastic)
+    priv->bounce_alpha = clutter_alpha_new_full (priv->interpolation,
+                                                 CLUTTER_LINEAR);
+
+  g_signal_connect (priv->interpolation,
+                    "new-frame",
+                    G_CALLBACK (interpolation_new_frame_cb),
+                    adjustment);
+  g_signal_connect (priv->interpolation,
+                    "completed",
+                    G_CALLBACK (interpolation_completed_cb),
+                    adjustment);
+
+  clutter_timeline_start (priv->interpolation);
+}
+
+gboolean
+nbtk_adjustment_get_elastic (NbtkAdjustment *adjustment)
+{
+  return adjustment->priv->elastic;
+}
+
+void
+nbtk_adjustment_set_elastic (NbtkAdjustment *adjustment,
+                             gboolean        elastic)
+{
+  adjustment->priv->elastic = elastic;
+}
+
+gboolean
+nbtk_adjustment_clamp (NbtkAdjustment *adjustment,
+                       gboolean        interpolate,
+                       guint           duration)
+{
+  NbtkAdjustmentPrivate *priv = adjustment->priv;
+  gdouble dest = priv->value;
+
+  if (priv->value < priv->lower)
+    dest = priv->lower;
+
+  if (priv->value > priv->upper - priv->page_size)
+    dest = priv->upper - priv->page_size;
+
+  if (dest != priv->value)
+    {
+      if (interpolate)
+        nbtk_adjustment_interpolate (adjustment, dest, duration);
+      else
+        nbtk_adjustment_set_value (adjustment, dest);
+
+      return TRUE;
+    }
+
+  return FALSE;
+}

src/nbtk/nbtk-adjustment.h

@@ -0,0 +1,121 @@
+/*
+ * nbtk-adjustment.h: Adjustment object
+ *
+ * Copyright 2008 OpenedHand
+ * Copyright 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by: Chris Lord <chris@openedhand.com>, inspired by GtkAdjustment
+ * Port to Nbtk by: Robert Staudinger <robsta@openedhand.com>
+ *
+ */
+
+#if !defined(NBTK_H_INSIDE) && !defined(NBTK_COMPILATION)
+#error "Only <nbtk/nbtk.h> can be included directly.h"
+#endif
+
+#ifndef __NBTK_ADJUSTMENT_H__
+#define __NBTK_ADJUSTMENT_H__
+
+#include <glib-object.h>
+#include <clutter/clutter.h>
+
+G_BEGIN_DECLS
+
+#define NBTK_TYPE_ADJUSTMENT            (nbtk_adjustment_get_type())
+#define NBTK_ADJUSTMENT(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), NBTK_TYPE_ADJUSTMENT, NbtkAdjustment))
+#define NBTK_IS_ADJUSTMENT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NBTK_TYPE_ADJUSTMENT))
+#define NBTK_ADJUSTMENT_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), NBTK_TYPE_ADJUSTMENT, NbtkAdjustmentClass))
+#define NBTK_IS_ADJUSTMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), NBTK_TYPE_ADJUSTMENT))
+#define NBTK_ADJUSTMENT_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), NBTK_TYPE_ADJUSTMENT, NbtkAdjustmentClass))
+
+typedef struct _NbtkAdjustment          NbtkAdjustment;
+typedef struct _NbtkAdjustmentPrivate   NbtkAdjustmentPrivate;
+typedef struct _NbtkAdjustmentClass     NbtkAdjustmentClass;
+
+/**
+ * NbtkAdjustment:
+ *
+ * Class for handling an interval between to values. The contents of
+ * the #NbtkAdjustment are private and should be accessed using the
+ * public API.
+ */
+struct _NbtkAdjustment
+{
+  /*< private >*/
+  GObject parent_instance;
+
+  NbtkAdjustmentPrivate *priv;
+};
+
+/**
+ * NbtkAdjustmentClass
+ * @changed: Class handler for the ::changed signal.
+ *
+ * Base class for #NbtkAdjustment.
+ */
+struct _NbtkAdjustmentClass
+{
+  /*< private >*/
+  GObjectClass parent_class;
+
+  /*< public >*/
+  void (* changed) (NbtkAdjustment *adjustment);
+};
+
+GType nbtk_adjustment_get_type (void) G_GNUC_CONST;
+
+NbtkAdjustment *nbtk_adjustment_new          (gdouble         value,
+                                              gdouble         lower,
+                                              gdouble         upper,
+                                              gdouble         step_increment,
+                                              gdouble         page_increment,
+                                              gdouble         page_size);
+gdouble         nbtk_adjustment_get_value    (NbtkAdjustment *adjustment);
+void            nbtk_adjustment_set_value    (NbtkAdjustment *adjustment,
+                                              gdouble         value);
+void            nbtk_adjustment_clamp_page   (NbtkAdjustment *adjustment,
+                                              gdouble         lower,
+                                              gdouble         upper);
+void            nbtk_adjustment_set_values   (NbtkAdjustment *adjustment,
+                                              gdouble         value,
+                                              gdouble         lower,
+                                              gdouble         upper,
+                                              gdouble         step_increment,
+                                              gdouble         page_increment,
+                                              gdouble         page_size);
+void            nbtk_adjustment_get_values   (NbtkAdjustment *adjustment,
+                                              gdouble        *value,
+                                              gdouble        *lower,
+                                              gdouble        *upper,
+                                              gdouble        *step_increment,
+                                              gdouble        *page_increment,
+                                              gdouble        *page_size);
+
+void            nbtk_adjustment_interpolate  (NbtkAdjustment *adjustment,
+                                              gdouble         value,
+                                              guint           duration);
+
+gboolean        nbtk_adjustment_get_elastic  (NbtkAdjustment *adjustment);
+void            nbtk_adjustment_set_elastic  (NbtkAdjustment *adjustment,
+                                              gboolean        elastic);
+
+gboolean        nbtk_adjustment_clamp        (NbtkAdjustment *adjustment,
+                                              gboolean        interpolate,
+                                              guint           duration);
+
+G_END_DECLS
+
+#endif /* __NBTK_ADJUSTMENT_H__ */

src/nbtk/nbtk-bin.c

@@ -0,0 +1,739 @@
+/*
+ * nbtk-bin.c: Basic container actor
+ *
+ * Copyright (c) 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by: Emmanuele Bassi <ebassi@linux.intel.com>
+ *
+ */
+
+/**
+ * SECTION:nbtk-bin
+ * @short_description: a simple container with one actor
+ *
+ * #NbtkBin is a simple container capable of having only one
+ * #ClutterActor as a child.
+ *
+ * #NbtkBin inherits from #NbtkWidget, so it is fully themable.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <clutter/clutter.h>
+
+#include "nbtk-bin.h"
+#include "nbtk-enum-types.h"
+#include "nbtk-private.h"
+
+#define NBTK_BIN_GET_PRIVATE(obj)       (G_TYPE_INSTANCE_GET_PRIVATE ((obj), NBTK_TYPE_BIN, NbtkBinPrivate))
+
+struct _NbtkBinPrivate
+{
+  ClutterActor *child;
+
+  NbtkAlignment x_align;
+  NbtkAlignment y_align;
+
+  guint x_fill : 1;
+  guint y_fill : 1;
+};
+
+enum
+{
+  PROP_0,
+
+  PROP_CHILD,
+  PROP_X_ALIGN,
+  PROP_Y_ALIGN,
+  PROP_X_FILL,
+  PROP_Y_FILL
+};
+
+static void clutter_container_iface_init (ClutterContainerIface *iface);
+
+G_DEFINE_TYPE_WITH_CODE (NbtkBin, nbtk_bin, NBTK_TYPE_WIDGET,
+                         G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_CONTAINER,
+                                                clutter_container_iface_init));
+
+void
+_nbtk_bin_get_align_factors (NbtkBin *bin,
+                             gdouble *x_align,
+                             gdouble *y_align)
+{
+  NbtkBinPrivate *priv = bin->priv;
+  gdouble factor;
+
+  switch (priv->x_align)
+    {
+    case NBTK_ALIGN_LEFT:
+      factor = 0.0;
+      break;
+
+    case NBTK_ALIGN_CENTER:
+      factor = 0.5;
+      break;
+
+    case NBTK_ALIGN_RIGHT:
+      factor = 1.0;
+      break;
+
+    default:
+      factor = 0.0;
+      break;
+    }
+
+  if (x_align)
+    *x_align = factor;
+
+  switch (priv->y_align)
+    {
+    case NBTK_ALIGN_TOP:
+      factor = 0.0;
+      break;
+
+    case NBTK_ALIGN_CENTER:
+      factor = 0.5;
+      break;
+
+    case NBTK_ALIGN_BOTTOM:
+      factor = 1.0;
+      break;
+
+    default:
+      factor = 0.0;
+      break;
+    }
+
+  if (y_align)
+    *y_align = factor;
+}
+
+static void
+nbtk_bin_add (ClutterContainer *container,
+              ClutterActor     *actor)
+{
+  nbtk_bin_set_child (NBTK_BIN (container), actor);
+}
+
+static void
+nbtk_bin_remove (ClutterContainer *container,
+                 ClutterActor     *actor)
+{
+  NbtkBinPrivate *priv = NBTK_BIN (container)->priv;
+
+  if (priv->child == actor)
+    nbtk_bin_set_child (NBTK_BIN (container), NULL);
+}
+
+static void
+nbtk_bin_foreach (ClutterContainer *container,
+                  ClutterCallback   callback,
+                  gpointer          user_data)
+{
+  NbtkBinPrivate *priv = NBTK_BIN (container)->priv;
+
+  if (priv->child)
+    callback (priv->child, user_data);
+}
+
+static void
+clutter_container_iface_init (ClutterContainerIface *iface)
+{
+  iface->add = nbtk_bin_add;
+  iface->remove = nbtk_bin_remove;
+  iface->foreach = nbtk_bin_foreach;
+}
+
+static void
+nbtk_bin_paint (ClutterActor *self)
+{
+  NbtkBinPrivate *priv = NBTK_BIN (self)->priv;
+
+  /* allow NbtkWidget to paint the background */
+  CLUTTER_ACTOR_CLASS (nbtk_bin_parent_class)->paint (self);
+
+  /* the pain our child */
+  if (priv->child)
+    clutter_actor_paint (priv->child);
+}
+
+static void
+nbtk_bin_pick (ClutterActor       *self,
+               const ClutterColor *pick_color)
+{
+  NbtkBinPrivate *priv = NBTK_BIN (self)->priv;
+
+  /* get the default pick implementation */
+  CLUTTER_ACTOR_CLASS (nbtk_bin_parent_class)->pick (self, pick_color);
+
+  if (priv->child)
+    clutter_actor_paint (priv->child);
+}
+
+static void
+nbtk_bin_allocate (ClutterActor          *self,
+                   const ClutterActorBox *box,
+                   ClutterAllocationFlags flags)
+{
+  NbtkBinPrivate *priv = NBTK_BIN (self)->priv;
+
+  CLUTTER_ACTOR_CLASS (nbtk_bin_parent_class)->allocate (self, box,
+                                                         flags);
+
+  if (priv->child)
+    {
+      ShellThemeNode *theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (self));
+      gfloat natural_width, natural_height;
+      gfloat min_width, min_height;
+      gfloat child_width, child_height;
+      gfloat available_width, available_height;
+      ClutterRequestMode request;
+      ClutterActorBox content_box;
+      ClutterActorBox allocation = { 0, };
+      gdouble x_align, y_align;
+
+      shell_theme_node_get_content_box (theme_node, box, &content_box);
+
+      _nbtk_bin_get_align_factors (NBTK_BIN (self), &x_align, &y_align);
+
+      available_width  = content_box.x2 - content_box.x1;
+      available_height = content_box.y2 - content_box.y1;
+
+      if (available_width < 0)
+        available_width = 0;
+
+      if (available_height < 0)
+        available_height = 0;
+
+      if (priv->x_fill)
+        {
+          allocation.x1 = (int) content_box.x1;
+          allocation.x2 = (int) content_box.x2;
+        }
+
+      if (priv->y_fill)
+        {
+          allocation.y1 = (int) content_box.y1;
+          allocation.y2 = (int) content_box.y2;
+        }
+
+      /* if we are filling horizontally and vertically then we're done */
+      if (priv->x_fill && priv->y_fill)
+        {
+          clutter_actor_allocate (priv->child, &allocation, flags);
+          return;
+        }
+
+      request = CLUTTER_REQUEST_HEIGHT_FOR_WIDTH;
+      g_object_get (G_OBJECT (priv->child), "request-mode", &request, NULL);
+
+      if (request == CLUTTER_REQUEST_HEIGHT_FOR_WIDTH)
+        {
+          clutter_actor_get_preferred_width (priv->child, available_height,
+                                             &min_width,
+                                             &natural_width);
+
+          child_width = CLAMP (natural_width, min_width, available_width);
+
+          clutter_actor_get_preferred_height (priv->child, child_width,
+                                              &min_height,
+                                              &natural_height);
+
+          child_height = CLAMP (natural_height, min_height, available_height);
+        }
+      else
+        {
+          clutter_actor_get_preferred_height (priv->child, available_width,
+                                              &min_height,
+                                              &natural_height);
+
+          child_height = CLAMP (natural_height, min_height, available_height);
+
+          clutter_actor_get_preferred_width (priv->child, child_height,
+                                             &min_width,
+                                             &natural_width);
+
+          child_width = CLAMP (natural_width, min_width, available_width);
+        }
+
+      if (!priv->x_fill)
+        {
+          allocation.x1 = content_box.x1 + (int) ((available_width - child_width) * x_align);
+          allocation.x2 = allocation.x1 + child_width;
+        }
+
+      if (!priv->y_fill)
+        {
+          allocation.y1 = content_box.y1 + (int) ((available_height - child_height) * y_align);
+          allocation.y2 = allocation.y1 + child_height;
+        }
+
+      clutter_actor_allocate (priv->child, &allocation, flags);
+    }
+}
+
+static void
+nbtk_bin_get_preferred_width (ClutterActor *self,
+                              gfloat   for_height,
+                              gfloat  *min_width_p,
+                              gfloat  *natural_width_p)
+{
+  NbtkBinPrivate *priv = NBTK_BIN (self)->priv;
+  ShellThemeNode *theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (self));
+
+  shell_theme_node_adjust_for_height (theme_node, &for_height);
+
+  if (priv->child == NULL)
+    {
+      if (min_width_p)
+	*min_width_p = 0;
+
+      if (natural_width_p)
+        *natural_width_p = 0;
+    }
+  else
+    {
+      clutter_actor_get_preferred_width (priv->child, for_height,
+                                         min_width_p,
+                                         natural_width_p);
+    }
+
+  shell_theme_node_adjust_preferred_width (theme_node, min_width_p, natural_width_p);
+}
+
+static void
+nbtk_bin_get_preferred_height (ClutterActor *self,
+                               gfloat   for_width,
+                               gfloat  *min_height_p,
+                               gfloat  *natural_height_p)
+{
+  NbtkBinPrivate *priv = NBTK_BIN (self)->priv;
+  ShellThemeNode *theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (self));
+
+  shell_theme_node_adjust_for_width (theme_node, &for_width);
+
+  if (priv->child == NULL)
+    {
+      if (min_height_p)
+        *min_height_p = 0;
+
+      if (natural_height_p)
+        *natural_height_p = 0;
+    }
+  else
+    {
+      clutter_actor_get_preferred_height (priv->child, for_width,
+                                          min_height_p,
+                                          natural_height_p);
+    }
+
+  shell_theme_node_adjust_preferred_height (theme_node, min_height_p, natural_height_p);
+}
+
+static void
+nbtk_bin_dispose (GObject *gobject)
+{
+  NbtkBinPrivate *priv = NBTK_BIN (gobject)->priv;
+
+  if (priv->child)
+    {
+      clutter_actor_unparent (priv->child);
+      priv->child = NULL;
+    }
+
+  G_OBJECT_CLASS (nbtk_bin_parent_class)->dispose (gobject);
+}
+
+static void
+nbtk_bin_set_property (GObject      *gobject,
+                       guint         prop_id,
+                       const GValue *value,
+                       GParamSpec   *pspec)
+{
+  NbtkBin *bin = NBTK_BIN (gobject);
+
+  switch (prop_id)
+    {
+    case PROP_CHILD:
+      nbtk_bin_set_child (bin, g_value_get_object (value));
+      break;
+
+    case PROP_X_ALIGN:
+      nbtk_bin_set_alignment (bin,
+                              g_value_get_enum (value),
+                              bin->priv->y_align);
+      break;
+
+    case PROP_Y_ALIGN:
+      nbtk_bin_set_alignment (bin,
+                              bin->priv->x_align,
+                              g_value_get_enum (value));
+      break;
+
+    case PROP_X_FILL:
+      nbtk_bin_set_fill (bin,
+                         g_value_get_boolean (value),
+                         bin->priv->y_fill);
+      break;
+
+    case PROP_Y_FILL:
+      nbtk_bin_set_fill (bin,
+                         bin->priv->y_fill,
+                         g_value_get_boolean (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+    }
+}
+
+static void
+nbtk_bin_get_property (GObject    *gobject,
+                       guint       prop_id,
+                       GValue     *value,
+                       GParamSpec *pspec)
+{
+  NbtkBinPrivate *priv = NBTK_BIN (gobject)->priv;
+
+  switch (prop_id)
+    {
+    case PROP_CHILD:
+      g_value_set_object (value, priv->child);
+      break;
+
+    case PROP_X_FILL:
+      g_value_set_boolean (value, priv->x_fill);
+      break;
+
+    case PROP_Y_FILL:
+      g_value_set_boolean (value, priv->y_fill);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+    }
+}
+
+static void
+nbtk_bin_class_init (NbtkBinClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
+  GParamSpec *pspec;
+
+  g_type_class_add_private (klass, sizeof (NbtkBinPrivate));
+
+  gobject_class->set_property = nbtk_bin_set_property;
+  gobject_class->get_property = nbtk_bin_get_property;
+  gobject_class->dispose = nbtk_bin_dispose;
+
+  actor_class->get_preferred_width = nbtk_bin_get_preferred_width;
+  actor_class->get_preferred_height = nbtk_bin_get_preferred_height;
+  actor_class->allocate = nbtk_bin_allocate;
+  actor_class->paint = nbtk_bin_paint;
+  actor_class->pick = nbtk_bin_pick;
+
+  /**
+   * NbtkBin:child:
+   *
+   * The child #ClutterActor of the #NbtkBin container.
+   */
+  pspec = g_param_spec_object ("child",
+                               "Child",
+                               "The child of the Bin",
+                               CLUTTER_TYPE_ACTOR,
+                               NBTK_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_CHILD, pspec);
+
+  /**
+   * NbtkBin:x-align:
+   *
+   * The horizontal alignment of the #NbtkBin child.
+   */
+  pspec = g_param_spec_enum ("x-align",
+                             "X Align",
+                             "The horizontal alignment",
+                             NBTK_TYPE_ALIGNMENT,
+                             NBTK_ALIGN_CENTER,
+                             NBTK_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_X_ALIGN, pspec);
+
+  /**
+   * NbtkBin:y-align:
+   *
+   * The vertical alignment of the #NbtkBin child.
+   */
+  pspec = g_param_spec_enum ("y-align",
+                             "Y Align",
+                             "The vertical alignment",
+                             NBTK_TYPE_ALIGNMENT,
+                             NBTK_ALIGN_CENTER,
+                             NBTK_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_Y_ALIGN, pspec);
+
+  /**
+   * NbtkBin:x-fill:
+   *
+   * Whether the child should fill the horizontal allocation
+   */
+  pspec = g_param_spec_boolean ("x-fill",
+                                "X Fill",
+                                "Whether the child should fill the "
+                                "horizontal allocation",
+                                FALSE,
+                                NBTK_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_X_FILL, pspec);
+
+  /**
+   * NbtkBin:y-fill:
+   *
+   * Whether the child should fill the vertical allocation
+   */
+  pspec = g_param_spec_boolean ("y-fill",
+                                "Y Fill",
+                                "Whether the child should fill the "
+                                "vertical allocation",
+                                FALSE,
+                                NBTK_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_Y_FILL, pspec);
+}
+
+static void
+nbtk_bin_init (NbtkBin *bin)
+{
+  bin->priv = NBTK_BIN_GET_PRIVATE (bin);
+
+  bin->priv->x_align = NBTK_ALIGN_CENTER;
+  bin->priv->y_align = NBTK_ALIGN_CENTER;
+}
+
+/**
+ * nbtk_bin_new:
+ *
+ * Creates a new #NbtkBin, a simple container for one child.
+ *
+ * Return value: the newly created #NbtkBin actor
+ */
+NbtkWidget *
+nbtk_bin_new (void)
+{
+  return g_object_new (NBTK_TYPE_BIN, NULL);
+}
+
+/**
+ * nbtk_bin_set_child:
+ * @bin: a #NbtkBin
+ * @child: a #ClutterActor, or %NULL
+ *
+ * Sets @child as the child of @bin.
+ *
+ * If @bin already has a child, the previous child is removed.
+ */
+void
+nbtk_bin_set_child (NbtkBin *bin,
+                    ClutterActor *child)
+{
+  NbtkBinPrivate *priv;
+
+  g_return_if_fail (NBTK_IS_BIN (bin));
+  g_return_if_fail (child == NULL || CLUTTER_IS_ACTOR (child));
+
+  priv = bin->priv;
+
+  if (priv->child == child)
+    return;
+
+  if (priv->child)
+    {
+      ClutterActor *old_child = priv->child;
+
+      g_object_ref (old_child);
+
+      priv->child = NULL;
+      clutter_actor_unparent (old_child);
+
+      g_signal_emit_by_name (bin, "actor-removed", old_child);
+
+      g_object_unref (old_child);
+    }
+
+  if (child)
+    {
+      priv->child = child;
+      clutter_actor_set_parent (child, CLUTTER_ACTOR (bin));
+
+      g_signal_emit_by_name (bin, "actor-added", priv->child);
+    }
+
+  clutter_actor_queue_relayout (CLUTTER_ACTOR (bin));
+
+  g_object_notify (G_OBJECT (bin), "child");
+}
+
+/**
+ * nbtk_bin_get_child:
+ * @bin: a #NbtkBin
+ *
+ * Retrieves a pointer to the child of @bin.
+ *
+ * Return value: (transfer none): a #ClutterActor, or %NULL
+ */
+ClutterActor *
+nbtk_bin_get_child (NbtkBin *bin)
+{
+  g_return_val_if_fail (NBTK_IS_BIN (bin), NULL);
+
+  return bin->priv->child;
+}
+
+/**
+ * nbtk_bin_set_alignment:
+ * @bin: a #NbtkBin
+ * @x_align: horizontal alignment
+ * @y_align: vertical alignment
+ *
+ * Sets the horizontal and vertical alignment of the child
+ * inside a #NbtkBin.
+ */
+void
+nbtk_bin_set_alignment (NbtkBin       *bin,
+                        NbtkAlignment  x_align,
+                        NbtkAlignment  y_align)
+{
+  NbtkBinPrivate *priv;
+  gboolean changed = FALSE;
+
+  g_return_if_fail (NBTK_IS_BIN (bin));
+
+  priv = bin->priv;
+
+  g_object_freeze_notify (G_OBJECT (bin));
+
+  if (priv->x_align != x_align)
+    {
+      priv->x_align = x_align;
+      g_object_notify (G_OBJECT (bin), "x-align");
+      changed = TRUE;
+    }
+
+  if (priv->y_align != y_align)
+    {
+      priv->y_align = y_align;
+      g_object_notify (G_OBJECT (bin), "y-align");
+      changed = TRUE;
+    }
+
+  if (changed)
+    clutter_actor_queue_relayout (CLUTTER_ACTOR (bin));
+
+  g_object_thaw_notify (G_OBJECT (bin));
+}
+
+/**
+ * nbtk_bin_get_alignment:
+ * @bin: a #NbtkBin
+ * @x_align: return location for the horizontal alignment, or %NULL
+ * @y_align: return location for the vertical alignment, or %NULL
+ *
+ * Retrieves the horizontal and vertical alignment of the child
+ * inside a #NbtkBin, as set by nbtk_bin_set_alignment().
+ */
+void
+nbtk_bin_get_alignment (NbtkBin       *bin,
+                        NbtkAlignment *x_align,
+                        NbtkAlignment *y_align)
+{
+  NbtkBinPrivate *priv;
+
+  g_return_if_fail (NBTK_IS_BIN (bin));
+
+  priv = bin->priv;
+
+  if (x_align)
+    *x_align = priv->x_align;
+
+  if (y_align)
+    *y_align = priv->y_align;
+}
+
+/**
+ * nbtk_bin_set_fill:
+ * @bin: a #NbtkBin
+ * @x_fill: %TRUE if the child should fill horizontally the @bin
+ * @y_fill: %TRUE if the child should fill vertically the @bin
+ *
+ * Sets whether the child of @bin should fill out the horizontal
+ * and/or vertical allocation of the parent
+ */
+void
+nbtk_bin_set_fill (NbtkBin  *bin,
+                   gboolean  x_fill,
+                   gboolean  y_fill)
+{
+  NbtkBinPrivate *priv;
+  gboolean changed = FALSE;
+
+  g_return_if_fail (NBTK_IS_BIN (bin));
+
+  priv = bin->priv;
+
+  g_object_freeze_notify (G_OBJECT (bin));
+
+  if (priv->x_fill != x_fill)
+    {
+      priv->x_fill = x_fill;
+      changed = TRUE;
+
+      g_object_notify (G_OBJECT (bin), "x-fill");
+    }
+
+  if (priv->y_fill != y_fill)
+    {
+      priv->y_fill = y_fill;
+      changed = TRUE;
+
+      g_object_notify (G_OBJECT (bin), "y-fill");
+    }
+
+  if (changed)
+    clutter_actor_queue_relayout (CLUTTER_ACTOR (bin));
+
+  g_object_thaw_notify (G_OBJECT (bin));
+}
+
+/**
+ * nbtk_bin_get_fill:
+ * @bin: a #NbtkBin
+ * @x_fill: (out): return location for the horizontal fill, or %NULL
+ * @y_fill: (out): return location for the vertical fill, or %NULL
+ *
+ * Retrieves the horizontal and vertical fill settings
+ */
+void
+nbtk_bin_get_fill (NbtkBin  *bin,
+                   gboolean *x_fill,
+                   gboolean *y_fill)
+{
+  g_return_if_fail (NBTK_IS_BIN (bin));
+
+  if (x_fill)
+    *x_fill = bin->priv->x_fill;
+
+  if (y_fill)
+    *y_fill = bin->priv->y_fill;
+}

src/nbtk/nbtk-bin.h

@@ -0,0 +1,92 @@
+/*
+ * nbtk-bin.h: Basic container actor
+ *
+ * Copyright 2009, 2008 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * Boston, MA 02111-1307, USA.
+ *
+ * Written by: Emmanuele Bassi <ebassi@linux.intel.com>
+ *
+ */
+
+#if !defined(NBTK_H_INSIDE) && !defined(NBTK_COMPILATION)
+#error "Only <nbtk/nbtk.h> can be included directly.h"
+#endif
+
+#ifndef __NBTK_BIN_H__
+#define __NBTK_BIN_H__
+
+#include <nbtk/nbtk-types.h>
+#include <nbtk/nbtk-widget.h>
+
+G_BEGIN_DECLS
+
+#define NBTK_TYPE_BIN                   (nbtk_bin_get_type ())
+#define NBTK_BIN(obj)                   (G_TYPE_CHECK_INSTANCE_CAST ((obj), NBTK_TYPE_BIN, NbtkBin))
+#define NBTK_IS_BIN(obj)                (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NBTK_TYPE_BIN))
+#define NBTK_BIN_CLASS(klass)           (G_TYPE_CHECK_CLASS_CAST ((klass), NBTK_TYPE_BIN, NbtkBinClass))
+#define NBTK_IS_BIN_CLASS(klass)        (G_TYPE_CHECK_CLASS_TYPE ((klass), NBTK_TYPE_BIN))
+#define NBTK_BIN_GET_CLASS(obj)         (G_TYPE_INSTANCE_GET_CLASS ((obj), NBTK_TYPE_BIN, NbtkBinClass))
+
+typedef struct _NbtkBin                 NbtkBin;
+typedef struct _NbtkBinPrivate          NbtkBinPrivate;
+typedef struct _NbtkBinClass            NbtkBinClass;
+
+/**
+ * NbtkBin:
+ *
+ * The #NbtkBin struct contains only private data
+ */
+struct _NbtkBin
+{
+  /*< private >*/
+  NbtkWidget parent_instance;
+
+  NbtkBinPrivate *priv;
+};
+
+/**
+ * NbtkBinClass:
+ *
+ * The #NbtkBinClass struct contains only private data
+ */
+struct _NbtkBinClass
+{
+  /*< private >*/
+  NbtkWidgetClass parent_class;
+};
+
+GType nbtk_bin_get_type (void) G_GNUC_CONST;
+
+NbtkWidget   *nbtk_bin_new           (void);
+void          nbtk_bin_set_child     (NbtkBin           *bin,
+                                      ClutterActor      *child);
+ClutterActor *nbtk_bin_get_child     (NbtkBin           *bin);
+void          nbtk_bin_set_alignment (NbtkBin           *bin,
+                                      NbtkAlignment      x_align,
+                                      NbtkAlignment      y_align);
+void          nbtk_bin_get_alignment (NbtkBin           *bin,
+                                      NbtkAlignment     *x_align,
+                                      NbtkAlignment     *y_align);
+void          nbtk_bin_set_fill      (NbtkBin           *bin,
+                                      gboolean           x_fill,
+                                      gboolean           y_fill);
+void          nbtk_bin_get_fill      (NbtkBin           *bin,
+                                      gboolean          *x_fill,
+                                      gboolean          *y_fill);
+
+G_END_DECLS
+
+#endif /* __NBTK_BIN_H__ */

src/nbtk/nbtk-box-layout-child.c

@@ -0,0 +1,176 @@
+/*
+ * nbtk-box-layout-child.c: box layout child actor
+ *
+ * Copyright 2009 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by: Thomas Wood <thomas.wood@intel.com>
+ */
+
+#include "nbtk-box-layout-child.h"
+#include "nbtk-private.h"
+
+G_DEFINE_TYPE (NbtkBoxLayoutChild, nbtk_box_layout_child, CLUTTER_TYPE_CHILD_META)
+
+#define BOX_LAYOUT_CHILD_PRIVATE(o) \
+  (G_TYPE_INSTANCE_GET_PRIVATE ((o), NBTK_TYPE_BOX_LAYOUT_CHILD, NbtkBoxLayoutChildPrivate))
+
+
+enum
+{
+  PROP_0,
+
+  PROP_EXPAND,
+  PROP_X_FILL,
+  PROP_Y_FILL,
+  PROP_X_ALIGN,
+  PROP_Y_ALIGN
+};
+
+static void
+nbtk_box_layout_child_get_property (GObject *object, guint property_id,
+                                    GValue *value, GParamSpec *pspec)
+{
+  NbtkBoxLayoutChild *child = NBTK_BOX_LAYOUT_CHILD (object);
+
+  switch (property_id)
+    {
+    case PROP_EXPAND:
+      g_value_set_boolean (value, child->expand);
+      break;
+    case PROP_X_FILL:
+      g_value_set_boolean (value, child->x_fill);
+      break;
+    case PROP_Y_FILL:
+      g_value_set_boolean (value, child->y_fill);
+      break;
+    case PROP_X_ALIGN:
+      g_value_set_enum (value, child->x_align);
+      break;
+    case PROP_Y_ALIGN:
+      g_value_set_enum (value, child->y_align);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    }
+}
+
+static void
+nbtk_box_layout_child_set_property (GObject *object, guint property_id,
+                                    const GValue *value, GParamSpec *pspec)
+{
+  NbtkBoxLayoutChild *child = NBTK_BOX_LAYOUT_CHILD (object);
+  NbtkBoxLayout *box = NBTK_BOX_LAYOUT (CLUTTER_CHILD_META (object)->container);
+
+  switch (property_id)
+    {
+    case PROP_EXPAND:
+      child->expand = g_value_get_boolean (value);
+      break;
+    case PROP_X_FILL:
+      child->x_fill = g_value_get_boolean (value);
+      break;
+    case PROP_Y_FILL:
+      child->y_fill = g_value_get_boolean (value);
+      break;
+    case PROP_X_ALIGN:
+      child->x_align = g_value_get_enum (value);
+      break;
+    case PROP_Y_ALIGN:
+      child->y_align = g_value_get_enum (value);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    }
+
+  clutter_actor_queue_relayout ((ClutterActor*) box);
+}
+
+static void
+nbtk_box_layout_child_dispose (GObject *object)
+{
+  G_OBJECT_CLASS (nbtk_box_layout_child_parent_class)->dispose (object);
+}
+
+static void
+nbtk_box_layout_child_finalize (GObject *object)
+{
+  G_OBJECT_CLASS (nbtk_box_layout_child_parent_class)->finalize (object);
+}
+
+static void
+nbtk_box_layout_child_class_init (NbtkBoxLayoutChildClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  GParamSpec *pspec;
+
+  object_class->get_property = nbtk_box_layout_child_get_property;
+  object_class->set_property = nbtk_box_layout_child_set_property;
+  object_class->dispose = nbtk_box_layout_child_dispose;
+  object_class->finalize = nbtk_box_layout_child_finalize;
+
+
+  pspec = g_param_spec_boolean ("expand", "Expand",
+                                "Allocate the child extra space",
+                                FALSE,
+                                NBTK_PARAM_READWRITE);
+  g_object_class_install_property (object_class, PROP_EXPAND, pspec);
+
+  pspec = g_param_spec_boolean ("x-fill", "x-fill",
+                                "Whether the child should receive priority "
+                                "when the container is allocating spare space "
+                                "on the horizontal axis",
+                                TRUE,
+                                NBTK_PARAM_READWRITE);
+  g_object_class_install_property (object_class, PROP_X_FILL, pspec);
+
+  pspec = g_param_spec_boolean ("y-fill", "y-fill",
+                                "Whether the child should receive priority "
+                                "when the container is allocating spare space "
+                                "on the vertical axis",
+                                TRUE,
+                                NBTK_PARAM_READWRITE);
+  g_object_class_install_property (object_class, PROP_Y_FILL, pspec);
+
+  pspec = g_param_spec_enum ("x-align",
+                             "X Alignment",
+                             "X alignment of the widget within the cell",
+                             NBTK_TYPE_ALIGN,
+                             NBTK_ALIGN_MIDDLE,
+                             NBTK_PARAM_READWRITE);
+  g_object_class_install_property (object_class, PROP_X_ALIGN, pspec);
+
+  pspec = g_param_spec_enum ("y-align",
+                             "Y Alignment",
+                             "Y alignment of the widget within the cell",
+                             NBTK_TYPE_ALIGN,
+                             NBTK_ALIGN_MIDDLE,
+                             NBTK_PARAM_READWRITE);
+  g_object_class_install_property (object_class, PROP_Y_ALIGN, pspec);
+}
+
+static void
+nbtk_box_layout_child_init (NbtkBoxLayoutChild *self)
+{
+  self->expand = FALSE;
+
+  self->x_fill = TRUE;
+  self->y_fill = TRUE;
+
+  self->x_align = NBTK_ALIGN_CENTER;
+  self->y_align = NBTK_ALIGN_CENTER;
+}

src/nbtk/nbtk-box-layout-child.h

@@ -0,0 +1,84 @@
+/*
+ * nbtk-box-layout-child.h: box layout child actor
+ *
+ * Copyright 2009 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by: Thomas Wood <thomas.wood@intel.com>
+ */
+
+#ifndef _NBTK_BOX_LAYOUT_CHILD_H
+#define _NBTK_BOX_LAYOUT_CHILD_H
+
+#include <clutter/clutter.h>
+#include "nbtk-enum-types.h"
+#include "nbtk-box-layout.h"
+
+G_BEGIN_DECLS
+
+#define NBTK_TYPE_BOX_LAYOUT_CHILD nbtk_box_layout_child_get_type()
+
+#define NBTK_BOX_LAYOUT_CHILD(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST ((obj), \
+  NBTK_TYPE_BOX_LAYOUT_CHILD, NbtkBoxLayoutChild))
+
+#define NBTK_BOX_LAYOUT_CHILD_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST ((klass), \
+  NBTK_TYPE_BOX_LAYOUT_CHILD, NbtkBoxLayoutChildClass))
+
+#define NBTK_IS_BOX_LAYOUT_CHILD(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
+  NBTK_TYPE_BOX_LAYOUT_CHILD))
+
+#define NBTK_IS_BOX_LAYOUT_CHILD_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE ((klass), \
+  NBTK_TYPE_BOX_LAYOUT_CHILD))
+
+#define NBTK_BOX_LAYOUT_CHILD_GET_CLASS(obj) \
+  (G_TYPE_INSTANCE_GET_CLASS ((obj), \
+  NBTK_TYPE_BOX_LAYOUT_CHILD, NbtkBoxLayoutChildClass))
+
+typedef struct _NbtkBoxLayoutChild NbtkBoxLayoutChild;
+typedef struct _NbtkBoxLayoutChildClass NbtkBoxLayoutChildClass;
+typedef struct _NbtkBoxLayoutChildPrivate NbtkBoxLayoutChildPrivate;
+
+/**
+ * NbtkBoxLayoutChild:
+ *
+ * The contents of this structure are private and should only be accessed
+ * through the public API.
+ */
+struct _NbtkBoxLayoutChild
+{
+  /*< private >*/
+  ClutterChildMeta parent;
+
+  gboolean expand;
+  gboolean x_fill : 1;
+  gboolean y_fill : 1;
+  NbtkAlign x_align;
+  NbtkAlign y_align;
+};
+
+struct _NbtkBoxLayoutChildClass
+{
+  ClutterChildMetaClass parent_class;
+};
+
+GType nbtk_box_layout_child_get_type (void);
+
+G_END_DECLS
+
+#endif /* _NBTK_BOX_LAYOUT_CHILD_H */

src/nbtk/nbtk-box-layout.h

@@ -0,0 +1,91 @@
+/*
+ * nbtk-box-layout.h: box layout actor
+ *
+ * Copyright 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by: Thomas Wood <thomas.wood@intel.com>
+ *
+ */
+
+
+#ifndef _NBTK_BOX_LAYOUT_H
+#define _NBTK_BOX_LAYOUT_H
+
+#include <nbtk/nbtk-widget.h>
+
+G_BEGIN_DECLS
+
+#define NBTK_TYPE_BOX_LAYOUT nbtk_box_layout_get_type()
+
+#define NBTK_BOX_LAYOUT(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST ((obj), \
+  NBTK_TYPE_BOX_LAYOUT, NbtkBoxLayout))
+
+#define NBTK_BOX_LAYOUT_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST ((klass), \
+  NBTK_TYPE_BOX_LAYOUT, NbtkBoxLayoutClass))
+
+#define NBTK_IS_BOX_LAYOUT(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
+  NBTK_TYPE_BOX_LAYOUT))
+
+#define NBTK_IS_BOX_LAYOUT_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE ((klass), \
+  NBTK_TYPE_BOX_LAYOUT))
+
+#define NBTK_BOX_LAYOUT_GET_CLASS(obj) \
+  (G_TYPE_INSTANCE_GET_CLASS ((obj), \
+  NBTK_TYPE_BOX_LAYOUT, NbtkBoxLayoutClass))
+
+typedef struct _NbtkBoxLayout NbtkBoxLayout;
+typedef struct _NbtkBoxLayoutClass NbtkBoxLayoutClass;
+typedef struct _NbtkBoxLayoutPrivate NbtkBoxLayoutPrivate;
+
+/**
+ * NbtkBoxLayout:
+ *
+ * The contents of this structure are private and should only be accessed
+ * through the public API.
+ */
+struct _NbtkBoxLayout
+{
+  /*< private >*/
+  NbtkWidget parent;
+
+  NbtkBoxLayoutPrivate *priv;
+};
+
+struct _NbtkBoxLayoutClass
+{
+  NbtkWidgetClass parent_class;
+};
+
+GType nbtk_box_layout_get_type (void);
+
+NbtkWidget *nbtk_box_layout_new (void);
+
+void nbtk_box_layout_set_vertical (NbtkBoxLayout *box, gboolean vertical);
+gboolean nbtk_box_layout_get_vertical (NbtkBoxLayout *box);
+
+void nbtk_box_layout_set_pack_start (NbtkBoxLayout *box, gboolean pack_start);
+gboolean nbtk_box_layout_get_pack_start (NbtkBoxLayout *box);
+
+void nbtk_box_layout_set_spacing (NbtkBoxLayout *box, guint spacing);
+guint nbtk_box_layout_get_spacing (NbtkBoxLayout *box);
+
+G_END_DECLS
+
+#endif /* _NBTK_BOX_LAYOUT_H */

src/nbtk/nbtk-button.c

@@ -0,0 +1,690 @@
+/*-button.c: Plain button actor
+ * Copyright 2007 OpenedHand
+ * Copyright , 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by: Emmanuele Bassi <ebassi@openedhand.com>
+ *             Thomas Wood <thomas@linux.intel.com>
+ *
+ */
+
+/**
+ * SECTION:nbtk-button
+ * @short_description: Button widget
+ *
+ * A button widget with support for either a text label or icon, toggle mode
+ * and transitions effects between states.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <glib.h>
+
+#include <clutter/clutter.h>
+
+#include "nbtk-button.h"
+
+#include "nbtk-marshal.h"
+#include "nbtk-texture-frame.h"
+#include "nbtk-texture-cache.h"
+#include "nbtk-private.h"
+
+enum
+{
+  PROP_0,
+
+  PROP_LABEL,
+  PROP_TOGGLE,
+  PROP_ACTIVE,
+  PROP_TRANSITION
+};
+
+enum
+{
+  CLICKED,
+
+  LAST_SIGNAL
+};
+
+#define NBTK_BUTTON_GET_PRIVATE(obj)    \
+        (G_TYPE_INSTANCE_GET_PRIVATE ((obj), NBTK_TYPE_BUTTON, NbtkButtonPrivate))
+
+struct _NbtkButtonPrivate
+{
+  gchar *text;
+
+  ClutterActor *old_bg;
+  gboolean old_bg_parented; /* TRUE if we have adopted old_bg */
+
+  guint8 old_opacity;
+
+  guint is_pressed : 1;
+  guint is_hover : 1;
+  guint is_checked : 1;
+  guint is_toggle : 1;
+
+  gint transition_duration;
+
+  ClutterAnimation *animation;
+
+  gint spacing;
+};
+
+static guint button_signals[LAST_SIGNAL] = { 0, };
+
+G_DEFINE_TYPE (NbtkButton, nbtk_button, NBTK_TYPE_BIN);
+
+static void
+nbtk_button_update_label_style (NbtkButton *button)
+{
+  ClutterActor *label;
+  ShellThemeNode *theme_node;
+  ClutterColor color;
+  const PangoFontDescription *font;
+  gchar *font_string = NULL;
+
+  label = nbtk_bin_get_child ((NbtkBin*) button);
+
+  /* check the child is really a label */
+  if (!CLUTTER_IS_TEXT (label))
+    return;
+
+  theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (button));
+
+  shell_theme_node_get_foreground_color (theme_node, &color);
+  clutter_text_set_color (CLUTTER_TEXT (label), &color);
+
+  font = shell_theme_node_get_font (theme_node);
+  font_string = pango_font_description_to_string (font);
+  clutter_text_set_font_name (CLUTTER_TEXT (label), font_string);
+  g_free (font_string);
+}
+
+static void
+nbtk_button_dispose_old_bg (NbtkButton *button)
+{
+  NbtkButtonPrivate *priv = button->priv;
+
+  if (priv->old_bg)
+    {
+      if (priv->old_bg_parented)
+        {
+          clutter_actor_unparent (priv->old_bg);
+          priv->old_bg_parented = FALSE;
+        }
+      g_object_unref (priv->old_bg);
+      priv->old_bg = NULL;
+    }
+}
+
+static void
+nbtk_animation_completed (ClutterAnimation  *animation,
+                          NbtkButton        *button)
+{
+  nbtk_button_dispose_old_bg (button);
+}
+
+static void
+nbtk_button_style_changed (NbtkWidget *widget)
+{
+  NbtkButton *button = NBTK_BUTTON (widget);
+  NbtkButtonPrivate *priv = button->priv;
+  NbtkButtonClass *button_class = NBTK_BUTTON_GET_CLASS (button);
+  ShellThemeNode *theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (button));
+  ClutterActor *bg_image;
+  double spacing;
+
+  nbtk_button_dispose_old_bg (button);
+
+  bg_image = nbtk_widget_get_border_image ((NbtkWidget*) button);
+  if (bg_image)
+    button->priv->old_bg = g_object_ref (bg_image);
+
+  NBTK_WIDGET_CLASS (nbtk_button_parent_class)->style_changed (widget);
+
+  spacing = 6;
+  shell_theme_node_get_length (theme_node, "border-spacing", FALSE, &spacing);
+  priv->spacing = round (spacing);
+
+  /* update the label styling */
+  nbtk_button_update_label_style (button);
+
+  /* run a transition if applicable */
+  if (button_class->transition)
+    {
+      button_class->transition (button, priv->old_bg);
+    }
+  else
+    {
+      if (priv->old_bg &&
+          (!nbtk_widget_get_style_pseudo_class (widget)))
+        {
+          ClutterAnimation *animation;
+          if (!clutter_actor_get_parent (priv->old_bg))
+            {
+              clutter_actor_set_parent (priv->old_bg, (ClutterActor*) widget);
+              priv->old_bg_parented = TRUE;
+            }
+          if (priv->transition_duration > 0)
+            {
+              animation = clutter_actor_animate (priv->old_bg,
+                                                 CLUTTER_LINEAR,
+                                                 priv->transition_duration,
+                                                 "opacity", 0,
+                                                 NULL);
+              g_signal_connect (animation, "completed",
+                                G_CALLBACK (nbtk_animation_completed), button);
+            }
+          else
+            {
+              nbtk_button_dispose_old_bg (button);
+            }
+
+        }
+    }
+}
+
+static void
+nbtk_button_real_pressed (NbtkButton *button)
+{
+  nbtk_widget_set_style_pseudo_class ((NbtkWidget*) button, "active");
+}
+
+static void
+nbtk_button_real_released (NbtkButton *button)
+{
+  NbtkButtonPrivate *priv = button->priv;
+
+  if (priv->is_checked)
+    nbtk_widget_set_style_pseudo_class ((NbtkWidget*) button, "checked");
+  else if (!priv->is_hover)
+    nbtk_widget_set_style_pseudo_class ((NbtkWidget*) button, NULL);
+  else
+    nbtk_widget_set_style_pseudo_class ((NbtkWidget*) button, "hover");
+
+}
+
+static gboolean
+nbtk_button_button_press (ClutterActor       *actor,
+                          ClutterButtonEvent *event)
+{
+  nbtk_widget_hide_tooltip (NBTK_WIDGET (actor));
+
+  if (event->button == 1)
+    {
+      NbtkButton *button = NBTK_BUTTON (actor);
+      NbtkButtonClass *klass = NBTK_BUTTON_GET_CLASS (button);
+
+      button->priv->is_pressed = TRUE;
+
+      clutter_grab_pointer (actor);
+
+      if (klass->pressed)
+        klass->pressed (button);
+
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+static gboolean
+nbtk_button_button_release (ClutterActor       *actor,
+                            ClutterButtonEvent *event)
+{
+  if (event->button == 1)
+    {
+      NbtkButton *button = NBTK_BUTTON (actor);
+      NbtkButtonClass *klass = NBTK_BUTTON_GET_CLASS (button);
+
+      if (!button->priv->is_pressed)
+        return FALSE;
+
+      clutter_ungrab_pointer ();
+
+      if (button->priv->is_toggle)
+        {
+          nbtk_button_set_checked (button, !button->priv->is_checked);
+        }
+
+      button->priv->is_pressed = FALSE;
+
+      if (klass->released)
+        klass->released (button);
+
+      g_signal_emit (button, button_signals[CLICKED], 0);
+
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+static gboolean
+nbtk_button_enter (ClutterActor         *actor,
+                   ClutterCrossingEvent *event)
+{
+  NbtkButton *button = NBTK_BUTTON (actor);
+
+  if (!button->priv->is_checked)
+    nbtk_widget_set_style_pseudo_class ((NbtkWidget*) button, "hover");
+
+  button->priv->is_hover = 1;
+
+  return CLUTTER_ACTOR_CLASS (nbtk_button_parent_class)->enter_event (actor, event);
+}
+
+static gboolean
+nbtk_button_leave (ClutterActor         *actor,
+                   ClutterCrossingEvent *event)
+{
+  NbtkButton *button = NBTK_BUTTON (actor);
+
+  button->priv->is_hover = 0;
+
+  if (button->priv->is_pressed)
+    {
+      NbtkButtonClass *klass = NBTK_BUTTON_GET_CLASS (button);
+
+      clutter_ungrab_pointer ();
+
+      button->priv->is_pressed = FALSE;
+
+      if (klass->released)
+        klass->released (button);
+    }
+
+  if (button->priv->is_checked)
+    nbtk_widget_set_style_pseudo_class ((NbtkWidget*) button, "checked");
+  else
+    nbtk_widget_set_style_pseudo_class ((NbtkWidget*) button, NULL);
+
+  return CLUTTER_ACTOR_CLASS (nbtk_button_parent_class)->leave_event (actor, event);
+}
+
+static void
+nbtk_button_set_property (GObject      *gobject,
+                          guint         prop_id,
+                          const GValue *value,
+                          GParamSpec   *pspec)
+{
+  NbtkButton *button = NBTK_BUTTON (gobject);
+  NbtkButtonPrivate *priv = NBTK_BUTTON (gobject)->priv;
+
+  switch (prop_id)
+    {
+    case PROP_LABEL:
+      nbtk_button_set_label (button, g_value_get_string (value));
+      break;
+    case PROP_TOGGLE:
+      nbtk_button_set_toggle_mode (button, g_value_get_boolean (value));
+      break;
+    case PROP_ACTIVE:
+      nbtk_button_set_checked (button, g_value_get_boolean (value));
+      break;
+    case PROP_TRANSITION:
+      priv->transition_duration = g_value_get_int (value);
+      break;
+
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+nbtk_button_get_property (GObject    *gobject,
+                          guint       prop_id,
+                          GValue     *value,
+                          GParamSpec *pspec)
+{
+  NbtkButtonPrivate *priv = NBTK_BUTTON (gobject)->priv;
+
+  switch (prop_id)
+    {
+    case PROP_LABEL:
+      g_value_set_string (value, priv->text);
+      break;
+    case PROP_TOGGLE:
+      g_value_set_boolean (value, priv->is_toggle);
+      break;
+    case PROP_ACTIVE:
+      g_value_set_boolean (value, priv->is_checked);
+      break;
+    case PROP_TRANSITION:
+      g_value_set_int (value, priv->transition_duration);
+      break;
+
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+nbtk_button_finalize (GObject *gobject)
+{
+  NbtkButtonPrivate *priv = NBTK_BUTTON (gobject)->priv;
+
+  g_free (priv->text);
+
+  G_OBJECT_CLASS (nbtk_button_parent_class)->finalize (gobject);
+}
+
+static void
+nbtk_button_dispose (GObject *gobject)
+{
+  nbtk_button_dispose_old_bg (NBTK_BUTTON (gobject));
+
+  G_OBJECT_CLASS (nbtk_button_parent_class)->dispose (gobject);
+}
+
+static void
+nbtk_button_map (ClutterActor *self)
+{
+  NbtkButtonPrivate *priv = NBTK_BUTTON (self)->priv;
+
+  CLUTTER_ACTOR_CLASS (nbtk_button_parent_class)->map (self);
+
+  if (priv->old_bg && priv->old_bg_parented)
+    clutter_actor_map (priv->old_bg);
+}
+
+static void
+nbtk_button_unmap (ClutterActor *self)
+{
+  NbtkButtonPrivate *priv = NBTK_BUTTON (self)->priv;
+
+  CLUTTER_ACTOR_CLASS (nbtk_button_parent_class)->unmap (self);
+
+  if (priv->old_bg && priv->old_bg_parented)
+    clutter_actor_unmap (priv->old_bg);
+}
+
+static void
+nbtk_button_draw_background (NbtkWidget         *widget)
+{
+  NbtkButtonPrivate *priv;
+
+  NBTK_WIDGET_CLASS (nbtk_button_parent_class)->draw_background (widget);
+
+  priv = NBTK_BUTTON (widget)->priv;
+
+  if (priv->old_bg && priv->old_bg_parented)
+      clutter_actor_paint (priv->old_bg);
+}
+
+static void
+nbtk_button_class_init (NbtkButtonClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
+  NbtkWidgetClass *widget_class = NBTK_WIDGET_CLASS (klass);
+  GParamSpec *pspec;
+
+  g_type_class_add_private (klass, sizeof (NbtkButtonPrivate));
+
+  klass->pressed = nbtk_button_real_pressed;
+  klass->released = nbtk_button_real_released;
+
+  gobject_class->set_property = nbtk_button_set_property;
+  gobject_class->get_property = nbtk_button_get_property;
+  gobject_class->dispose = nbtk_button_dispose;
+  gobject_class->finalize = nbtk_button_finalize;
+
+  actor_class->button_press_event = nbtk_button_button_press;
+  actor_class->button_release_event = nbtk_button_button_release;
+  actor_class->enter_event = nbtk_button_enter;
+  actor_class->leave_event = nbtk_button_leave;
+
+  actor_class->map = nbtk_button_map;
+  actor_class->unmap = nbtk_button_unmap;
+
+  widget_class->draw_background = nbtk_button_draw_background;
+  widget_class->style_changed = nbtk_button_style_changed;
+
+  pspec = g_param_spec_string ("label",
+                               "Label",
+                               "Label of the button",
+                               NULL, G_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_LABEL, pspec);
+
+  pspec = g_param_spec_boolean ("toggle-mode",
+                                "Toggle Mode",
+                                "Enable or disable toggling",
+                                FALSE, G_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_TOGGLE, pspec);
+
+  pspec = g_param_spec_boolean ("checked",
+                                "Checked",
+                                "Indicates if a toggle button is \"on\""
+                                " or \"off\"",
+                                FALSE, G_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_ACTIVE, pspec);
+
+  pspec = g_param_spec_int ("transition-duration",
+                            "Transition Duration",
+                            "Duration of the state transition effect",
+                            0, G_MAXINT, 120, G_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_TRANSITION, pspec);
+
+
+  /**
+   * NbtkButton::clicked:
+   * @button: the object that received the signal
+   *
+   * Emitted when the user activates the button, either with a mouse press and
+   * release or with the keyboard.
+   */
+
+  button_signals[CLICKED] =
+    g_signal_new ("clicked",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_LAST,
+                  G_STRUCT_OFFSET (NbtkButtonClass, clicked),
+                  NULL, NULL,
+                  _nbtk_marshal_VOID__VOID,
+                  G_TYPE_NONE, 0);
+}
+
+static void
+nbtk_button_init (NbtkButton *button)
+{
+  button->priv = NBTK_BUTTON_GET_PRIVATE (button);
+  button->priv->transition_duration = 120;
+  button->priv->spacing = 6;
+
+  clutter_actor_set_reactive ((ClutterActor *) button, TRUE);
+}
+
+/**
+ * nbtk_button_new:
+ *
+ * Create a new button
+ *
+ * Returns: a new #NbtkButton
+ */
+NbtkWidget *
+nbtk_button_new (void)
+{
+  return g_object_new (NBTK_TYPE_BUTTON, NULL);
+}
+
+/**
+ * nbtk_button_new_with_label:
+ * @text: text to set the label to
+ *
+ * Create a new #NbtkButton with the specified label
+ *
+ * Returns: a new #NbtkButton
+ */
+NbtkWidget *
+nbtk_button_new_with_label (const gchar *text)
+{
+  return g_object_new (NBTK_TYPE_BUTTON, "label", text, NULL);
+}
+
+/**
+ * nbtk_button_get_label:
+ * @button: a #NbtkButton
+ *
+ * Get the text displayed on the button
+ *
+ * Returns: the text for the button. This must not be freed by the application
+ */
+G_CONST_RETURN gchar *
+nbtk_button_get_label (NbtkButton *button)
+{
+  g_return_val_if_fail (NBTK_IS_BUTTON (button), NULL);
+
+  return button->priv->text;
+}
+
+/**
+ * nbtk_button_set_label:
+ * @button: a #Nbtkbutton
+ * @text: text to set the label to
+ *
+ * Sets the text displayed on the button
+ */
+void
+nbtk_button_set_label (NbtkButton  *button,
+                       const gchar *text)
+{
+  NbtkButtonPrivate *priv;
+  ClutterActor *label;
+
+  g_return_if_fail (NBTK_IS_BUTTON (button));
+
+  priv = button->priv;
+
+  g_free (priv->text);
+
+  if (text)
+    priv->text = g_strdup (text);
+  else
+    priv->text = g_strdup ("");
+
+  label = nbtk_bin_get_child ((NbtkBin*) button);
+
+  if (label && CLUTTER_IS_TEXT (label))
+    {
+      clutter_text_set_text (CLUTTER_TEXT (label), priv->text);
+    }
+  else
+    {
+      label = g_object_new (CLUTTER_TYPE_TEXT,
+                            "text", priv->text,
+                            "line-alignment", PANGO_ALIGN_CENTER,
+                            "ellipsize", PANGO_ELLIPSIZE_END,
+                            "use-markup", TRUE,
+                            NULL);
+      nbtk_bin_set_child ((NbtkBin*) button, label);
+    }
+
+  /* Fake a style change so that we reset the style properties on the label */
+  nbtk_widget_style_changed (NBTK_WIDGET (button));
+
+  g_object_notify (G_OBJECT (button), "label");
+}
+
+/**
+ * nbtk_button_get_toggle_mode:
+ * @button: a #NbtkButton
+ *
+ * Get the toggle mode status of the button.
+ *
+ * Returns: #TRUE if toggle mode is set, otherwise #FALSE
+ */
+gboolean
+nbtk_button_get_toggle_mode (NbtkButton *button)
+{
+  g_return_val_if_fail (NBTK_IS_BUTTON (button), FALSE);
+
+  return button->priv->is_toggle;
+}
+
+/**
+ * nbtk_button_set_toggle_mode:
+ * @button: a #Nbtkbutton
+ * @toggle: #TRUE or #FALSE
+ *
+ * Enables or disables toggle mode for the button. In toggle mode, the active
+ * state will be "toggled" when the user clicks the button.
+ */
+void
+nbtk_button_set_toggle_mode (NbtkButton  *button,
+                             gboolean     toggle)
+{
+  g_return_if_fail (NBTK_IS_BUTTON (button));
+
+  button->priv->is_toggle = toggle;
+
+  g_object_notify (G_OBJECT (button), "toggle-mode");
+}
+
+/**
+ * nbtk_button_get_checked:
+ * @button: a #NbtkButton
+ *
+ * Get the state of the button that is in toggle mode.
+ *
+ * Returns: #TRUE if the button is checked, or #FALSE if not
+ */
+gboolean
+nbtk_button_get_checked (NbtkButton *button)
+{
+  g_return_val_if_fail (NBTK_IS_BUTTON (button), FALSE);
+
+  return button->priv->is_checked;
+}
+
+/**
+ * nbtk_button_set_checked:
+ * @button: a #Nbtkbutton
+ * @checked: #TRUE or #FALSE
+ *
+ * Sets the pressed state of the button. This is only really useful if the
+ * button has #toggle-mode mode set to #TRUE.
+ */
+void
+nbtk_button_set_checked (NbtkButton  *button,
+                         gboolean     checked)
+{
+  g_return_if_fail (NBTK_IS_BUTTON (button));
+
+  if (button->priv->is_checked != checked)
+    {
+      button->priv->is_checked = checked;
+
+      if (checked)
+        nbtk_widget_set_style_pseudo_class ((NbtkWidget*) button, "checked");
+      else
+        if (button->priv->is_hover)
+          nbtk_widget_set_style_pseudo_class ((NbtkWidget*) button, "hover");
+        else
+          nbtk_widget_set_style_pseudo_class ((NbtkWidget*) button, NULL);
+    }
+
+  g_object_notify (G_OBJECT (button), "checked");
+}

src/nbtk/nbtk-button.h

@@ -0,0 +1,90 @@
+/*
+ * nbtk-button.h: Plain button actor
+ *
+ * Copyright 2007 OpenedHand
+ * Copyright 2008, 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * Boston, MA 02111-1307, USA.
+ *
+ * Written by: Emmanuele Bassi <ebassi@openedhand.com>
+ *             Thomas Wood <thomas@linux.intel.com>
+ *
+ */
+
+#if !defined(NBTK_H_INSIDE) && !defined(NBTK_COMPILATION)
+#error "Only <nbtk/nbtk.h> can be included directly.h"
+#endif
+
+#ifndef __NBTK_BUTTON_H__
+#define __NBTK_BUTTON_H__
+
+G_BEGIN_DECLS
+
+#include <nbtk/nbtk-bin.h>
+
+#define NBTK_TYPE_BUTTON                (nbtk_button_get_type ())
+#define NBTK_BUTTON(obj)                (G_TYPE_CHECK_INSTANCE_CAST ((obj), NBTK_TYPE_BUTTON, NbtkButton))
+#define NBTK_IS_BUTTON(obj)             (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NBTK_TYPE_BUTTON))
+#define NBTK_BUTTON_CLASS(klass)        (G_TYPE_CHECK_CLASS_CAST ((klass), NBTK_TYPE_BUTTON, NbtkButtonClass))
+#define NBTK_IS_BUTTON_CLASS(klass)     (G_TYPE_CHECK_CLASS_TYPE ((klass), NBTK_TYPE_BUTTON))
+#define NBTK_BUTTON_GET_CLASS(obj)      (G_TYPE_INSTANCE_GET_CLASS ((obj), NBTK_TYPE_BUTTON, NbtkButtonClass))
+
+typedef struct _NbtkButton              NbtkButton;
+typedef struct _NbtkButtonPrivate       NbtkButtonPrivate;
+typedef struct _NbtkButtonClass         NbtkButtonClass;
+
+/**
+ * NbtkButton:
+ *
+ * The contents of this structure is private and should only be accessed using
+ * the provided API.
+ */
+
+struct _NbtkButton
+{
+  /*< private >*/
+  NbtkBin parent_instance;
+
+  NbtkButtonPrivate *priv;
+};
+
+struct _NbtkButtonClass
+{
+  NbtkBinClass parent_class;
+
+  /* vfuncs, not signals */
+  void (* pressed)  (NbtkButton *button);
+  void (* released) (NbtkButton *button);
+  void (* transition) (NbtkButton *button, ClutterActor *old_bg);
+
+  /* signals */
+  void (* clicked) (NbtkButton *button);
+};
+
+GType nbtk_button_get_type (void) G_GNUC_CONST;
+
+NbtkWidget *          nbtk_button_new            (void);
+NbtkWidget *          nbtk_button_new_with_label (const gchar  *text);
+G_CONST_RETURN gchar *nbtk_button_get_label      (NbtkButton   *button);
+void                  nbtk_button_set_label      (NbtkButton   *button,
+                                                  const gchar  *text);
+void                  nbtk_button_set_toggle_mode    (NbtkButton *button, gboolean toggle);
+gboolean              nbtk_button_get_toggle_mode    (NbtkButton *button);
+void                  nbtk_button_set_checked        (NbtkButton *button, gboolean checked);
+gboolean              nbtk_button_get_checked        (NbtkButton *button);
+
+G_END_DECLS
+
+#endif /* __NBTK_BUTTON_H__ */

src/nbtk/nbtk-clipboard.c

@@ -0,0 +1,367 @@
+/*
+ * nbtk-clipboard.c: clipboard object
+ *
+ * Copyright 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by: Thomas Wood <thomas.wood@intel.com>
+ *
+ */
+
+
+#include "nbtk-clipboard.h"
+#include <X11/Xlib.h>
+#include <X11/Xatom.h>
+#include <clutter/x11/clutter-x11.h>
+#include <string.h>
+
+G_DEFINE_TYPE (NbtkClipboard, nbtk_clipboard, G_TYPE_OBJECT)
+
+#define CLIPBOARD_PRIVATE(o) \
+  (G_TYPE_INSTANCE_GET_PRIVATE ((o), NBTK_TYPE_CLIPBOARD, NbtkClipboardPrivate))
+
+struct _NbtkClipboardPrivate
+{
+  Window clipboard_window;
+  gchar *clipboard_text;
+
+  Atom *supported_targets;
+  gint n_targets;
+};
+
+typedef struct _EventFilterData EventFilterData;
+struct _EventFilterData
+{
+  NbtkClipboard *clipboard;
+  NbtkClipboardCallbackFunc callback;
+  gpointer user_data;
+};
+
+static Atom __atom_clip = None;
+static Atom __utf8_string = None;
+static Atom __atom_targets = None;
+
+static void
+nbtk_clipboard_get_property (GObject *object, guint property_id,
+                              GValue *value, GParamSpec *pspec)
+{
+  switch (property_id)
+    {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    }
+}
+
+static void
+nbtk_clipboard_set_property (GObject *object, guint property_id,
+                              const GValue *value, GParamSpec *pspec)
+{
+  switch (property_id)
+    {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    }
+}
+
+static void
+nbtk_clipboard_dispose (GObject *object)
+{
+  G_OBJECT_CLASS (nbtk_clipboard_parent_class)->dispose (object);
+}
+
+static void
+nbtk_clipboard_finalize (GObject *object)
+{
+  NbtkClipboardPrivate *priv = ((NbtkClipboard *) object)->priv;
+
+  g_free (priv->clipboard_text);
+  priv->clipboard_text = NULL;
+
+  g_free (priv->supported_targets);
+  priv->supported_targets = NULL;
+  priv->n_targets = 0;
+
+  G_OBJECT_CLASS (nbtk_clipboard_parent_class)->finalize (object);
+}
+
+static ClutterX11FilterReturn
+nbtk_clipboard_provider (XEvent        *xev,
+                         ClutterEvent  *cev,
+                         NbtkClipboard *clipboard)
+{
+  XSelectionEvent notify_event;
+  XSelectionRequestEvent *req_event;
+
+  if (xev->type != SelectionRequest)
+    return CLUTTER_X11_FILTER_CONTINUE;
+
+  req_event = &xev->xselectionrequest;
+
+  clutter_x11_trap_x_errors ();
+
+  if (req_event->target == __atom_targets)
+    {
+      XChangeProperty (req_event->display,
+                       req_event->requestor,
+                       req_event->property,
+                       XA_ATOM,
+                       32,
+                       PropModeReplace,
+                       (guchar*) clipboard->priv->supported_targets,
+                       clipboard->priv->n_targets);
+    }
+  else
+    {
+      XChangeProperty (req_event->display,
+                       req_event->requestor,
+                       req_event->property,
+                       req_event->target,
+                       8,
+                       PropModeReplace,
+                       (guchar*) clipboard->priv->clipboard_text,
+                       strlen (clipboard->priv->clipboard_text));
+    }
+
+  notify_event.type = SelectionNotify;
+  notify_event.display = req_event->display;
+  notify_event.requestor = req_event->requestor;
+  notify_event.selection = req_event->selection;
+  notify_event.target = req_event->target;
+  notify_event.time = req_event->time;
+
+  if (req_event->property == None)
+    notify_event.property = req_event->target;
+  else
+    notify_event.property = req_event->property;
+
+  /* notify the requestor that they have a copy of the selection */
+  XSendEvent (req_event->display, req_event->requestor, False, 0,
+              (XEvent *) &notify_event);
+  /* Make it happen non async */
+  XSync (clutter_x11_get_default_display(), FALSE);
+
+  clutter_x11_untrap_x_errors (); /* FIXME: Warn here on fail ? */
+
+  return CLUTTER_X11_FILTER_REMOVE;
+}
+
+
+static void
+nbtk_clipboard_class_init (NbtkClipboardClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  g_type_class_add_private (klass, sizeof (NbtkClipboardPrivate));
+
+  object_class->get_property = nbtk_clipboard_get_property;
+  object_class->set_property = nbtk_clipboard_set_property;
+  object_class->dispose = nbtk_clipboard_dispose;
+  object_class->finalize = nbtk_clipboard_finalize;
+}
+
+static void
+nbtk_clipboard_init (NbtkClipboard *self)
+{
+  Display *dpy;
+  NbtkClipboardPrivate *priv;
+
+  priv = self->priv = CLIPBOARD_PRIVATE (self);
+
+  priv->clipboard_window =
+    XCreateSimpleWindow (clutter_x11_get_default_display (),
+                         clutter_x11_get_root_window (),
+                         -1, -1, 1, 1, 0, 0, 0);
+
+  dpy = clutter_x11_get_default_display ();
+
+  /* Only create once */
+  if (__atom_clip == None)
+    __atom_clip = XInternAtom (dpy, "CLIPBOARD", 0);
+
+  if (__utf8_string == None)
+    __utf8_string = XInternAtom (dpy, "UTF8_STRING", 0);
+
+  if (__atom_targets == None)
+    __atom_targets = XInternAtom (dpy, "TARGETS", 0);
+
+  priv->n_targets = 2;
+  priv->supported_targets = g_new (Atom, priv->n_targets);
+
+  priv->supported_targets[0] = __utf8_string;
+  priv->supported_targets[1] = __atom_targets;
+
+  clutter_x11_add_filter ((ClutterX11FilterFunc) nbtk_clipboard_provider,
+                          self);
+}
+
+static ClutterX11FilterReturn
+nbtk_clipboard_x11_event_filter (XEvent          *xev,
+                                 ClutterEvent    *cev,
+                                 EventFilterData *filter_data)
+{
+  Atom actual_type;
+  int actual_format, result;
+  unsigned long nitems, bytes_after;
+  unsigned char *data = NULL;
+
+  if(xev->type != SelectionNotify)
+    return CLUTTER_X11_FILTER_CONTINUE;
+
+  if (xev->xselection.property == None)
+    {
+      /* clipboard empty */
+      filter_data->callback (filter_data->clipboard,
+                             NULL,
+                             filter_data->user_data);
+
+      clutter_x11_remove_filter ((ClutterX11FilterFunc) nbtk_clipboard_x11_event_filter,
+                                 filter_data);
+      g_free (filter_data);
+      return CLUTTER_X11_FILTER_REMOVE;
+    }
+
+  clutter_x11_trap_x_errors ();
+
+  result = XGetWindowProperty (xev->xselection.display,
+                               xev->xselection.requestor,
+                               xev->xselection.property,
+                               0L, G_MAXINT,
+                               True,
+                               AnyPropertyType,
+                               &actual_type,
+                               &actual_format,
+                               &nitems,
+                               &bytes_after,
+                               &data);
+
+  if (clutter_x11_untrap_x_errors () || result != Success)
+    {
+      /* FIXME: handle failure better */
+      g_warning ("Clipboard: prop retrival failed");
+    }
+
+  filter_data->callback (filter_data->clipboard, (char*) data,
+                         filter_data->user_data);
+
+  clutter_x11_remove_filter
+                    ((ClutterX11FilterFunc) nbtk_clipboard_x11_event_filter,
+                     filter_data);
+
+  g_free (filter_data);
+
+  if (data)
+    XFree (data);
+
+  return CLUTTER_X11_FILTER_REMOVE;
+}
+
+/**
+ * nbtk_clipboard_get_default:
+ *
+ * Get the global #NbtkClipboard object that represents the clipboard.
+ *
+ * Returns: (transfer none): a #NbtkClipboard owned by Nbtk and must not be
+ * unrefferenced or freed.
+ */
+NbtkClipboard*
+nbtk_clipboard_get_default (void)
+{
+  static NbtkClipboard *default_clipboard = NULL;
+
+  if (!default_clipboard)
+    {
+      default_clipboard = g_object_new (NBTK_TYPE_CLIPBOARD, NULL);
+    }
+
+  return default_clipboard;
+}
+
+/**
+ * nbtk_clipboard_get_text:
+ * @clipboard: A #NbtkCliboard
+ * @callback: function to be called when the text is retreived
+ * @user_data: data to be passed to the callback
+ *
+ * Request the data from the clipboard in text form. @callback is executed
+ * when the data is retreived.
+ *
+ */
+void
+nbtk_clipboard_get_text (NbtkClipboard             *clipboard,
+                         NbtkClipboardCallbackFunc  callback,
+                         gpointer                   user_data)
+{
+  EventFilterData *data;
+
+  Display *dpy;
+
+  g_return_if_fail (NBTK_IS_CLIPBOARD (clipboard));
+  g_return_if_fail (callback != NULL);
+
+  data = g_new0 (EventFilterData, 1);
+  data->clipboard = clipboard;
+  data->callback = callback;
+  data->user_data = user_data;
+
+  clutter_x11_add_filter ((ClutterX11FilterFunc)nbtk_clipboard_x11_event_filter,
+                          data);
+
+  dpy = clutter_x11_get_default_display ();
+
+  clutter_x11_trap_x_errors (); /* safety on */
+
+  XConvertSelection (dpy,
+                     __atom_clip,
+                     __utf8_string, __utf8_string,
+                     clipboard->priv->clipboard_window,
+                     CurrentTime);
+
+  clutter_x11_untrap_x_errors ();
+}
+
+/**
+ * nbtk_clipboard_set_text:
+ * @clipboard: A #NbtkClipboard
+ * @text: text to copy to the clipboard
+ *
+ * Sets text as the current contents of the clipboard.
+ *
+ */
+void
+nbtk_clipboard_set_text (NbtkClipboard *clipboard,
+                         const gchar   *text)
+{
+  NbtkClipboardPrivate *priv;
+  Display *dpy;
+
+  g_return_if_fail (NBTK_IS_CLIPBOARD (clipboard));
+  g_return_if_fail (text != NULL);
+
+  priv = clipboard->priv;
+
+  /* make a copy of the text */
+  g_free (priv->clipboard_text);
+  priv->clipboard_text = g_strdup (text);
+
+  /* tell X we own the clipboard selection */
+  dpy = clutter_x11_get_default_display ();
+
+  clutter_x11_trap_x_errors ();
+
+  XSetSelectionOwner (dpy, __atom_clip, priv->clipboard_window, CurrentTime);
+  XSync (dpy, FALSE);
+
+  clutter_x11_untrap_x_errors ();
+}

src/nbtk/nbtk-clipboard.h

@@ -0,0 +1,94 @@
+/*
+ * nbtk-clipboard.h: clipboard object
+ *
+ * Copyright 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by: Thomas Wood <thomas.wood@intel.com>
+ *
+ */
+
+#ifndef _NBTK_CLIPBOARD_H
+#define _NBTK_CLIPBOARD_H
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define NBTK_TYPE_CLIPBOARD nbtk_clipboard_get_type()
+
+#define NBTK_CLIPBOARD(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST ((obj), \
+  NBTK_TYPE_CLIPBOARD, NbtkClipboard))
+
+#define NBTK_CLIPBOARD_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST ((klass), \
+  NBTK_TYPE_CLIPBOARD, NbtkClipboardClass))
+
+#define NBTK_IS_CLIPBOARD(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
+  NBTK_TYPE_CLIPBOARD))
+
+#define NBTK_IS_CLIPBOARD_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE ((klass), \
+  NBTK_TYPE_CLIPBOARD))
+
+#define NBTK_CLIPBOARD_GET_CLASS(obj) \
+  (G_TYPE_INSTANCE_GET_CLASS ((obj), \
+  NBTK_TYPE_CLIPBOARD, NbtkClipboardClass))
+
+typedef struct _NbtkClipboard NbtkClipboard;
+typedef struct _NbtkClipboardClass NbtkClipboardClass;
+typedef struct _NbtkClipboardPrivate NbtkClipboardPrivate;
+
+/**
+ * NbtkClipboard:
+ *
+ * The contents of this structure is private and should only be accessed using
+ * the provided API.
+ */
+struct _NbtkClipboard
+{
+  /*< private >*/
+  GObject parent;
+  NbtkClipboardPrivate *priv;
+};
+
+struct _NbtkClipboardClass
+{
+  GObjectClass parent_class;
+};
+
+/**
+ * NbtkClipboardCallbackFunc:
+ * @clipboard: A #NbtkClipboard
+ * @text: text from the clipboard
+ * @user_data: user data
+ *
+ * Callback function called when text is retrieved from the clipboard.
+ */
+typedef void (*NbtkClipboardCallbackFunc) (NbtkClipboard *clipboard,
+                                           const gchar   *text,
+                                           gpointer       user_data);
+
+GType nbtk_clipboard_get_type (void);
+
+NbtkClipboard* nbtk_clipboard_get_default (void);
+void nbtk_clipboard_get_text (NbtkClipboard *clipboard, NbtkClipboardCallbackFunc callback, gpointer user_data);
+void nbtk_clipboard_set_text (NbtkClipboard *clipboard, const gchar *text);
+
+G_END_DECLS
+
+#endif /* _NBTK_CLIPBOARD_H */

src/nbtk/nbtk-entry.c

@@ -0,0 +1,897 @@
+/*
+ * nbtk-entry.c: Plain entry actor
+ *
+ * Copyright 2008, 2009 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by: Thomas Wood <thomas.wood@intel.com>
+ *
+ */
+
+/**
+ * SECTION:nbtk-entry
+ * @short_description: Widget for displaying text
+ *
+ * #NbtkEntry is a simple widget for displaying text. It derives from
+ * #NbtkWidget to add extra style and placement functionality over
+ * #ClutterText. The internal #ClutterText is publicly accessibly to allow
+ * applications to set further properties.
+ *
+ * #NbtkEntry supports the following pseudo style states:
+ * <itemizedlist>
+ *  <listitem>
+ *   <para>focus: the widget has focus</para>
+ *  </listitem>
+ *  <listitem>
+ *   <para>indeterminate: the widget is showing the hint text</para>
+ *  </listitem>
+ * </itemizedlist>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <math.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <glib.h>
+
+#include <clutter/clutter.h>
+#include <clutter-imcontext/clutter-imtext.h>
+
+#include "nbtk-entry.h"
+
+#include "nbtk-widget.h"
+#include "nbtk-texture-cache.h"
+#include "nbtk-marshal.h"
+#include "nbtk-clipboard.h"
+
+#define HAS_FOCUS(actor) (clutter_actor_get_stage (actor) && clutter_stage_get_key_focus ((ClutterStage *) clutter_actor_get_stage (actor)) == actor)
+
+
+/* properties */
+enum
+{
+  PROP_0,
+
+  PROP_CLUTTER_TEXT,
+  PROP_HINT_TEXT,
+  PROP_TEXT,
+};
+
+/* signals */
+enum
+{
+  PRIMARY_ICON_CLICKED,
+  SECONDARY_ICON_CLICKED,
+
+  LAST_SIGNAL
+};
+
+#define NBTK_ENTRY_GET_PRIVATE(obj)     (G_TYPE_INSTANCE_GET_PRIVATE ((obj), NBTK_TYPE_ENTRY, NbtkEntryPrivate))
+#define NBTK_ENTRY_PRIV(x) ((NbtkEntry *) x)->priv
+
+
+struct _NbtkEntryPrivate
+{
+  ClutterActor *entry;
+  gchar        *hint;
+
+  ClutterActor *primary_icon;
+  ClutterActor *secondary_icon;
+
+  gfloat   spacing;
+};
+
+static guint entry_signals[LAST_SIGNAL] = { 0, };
+
+G_DEFINE_TYPE (NbtkEntry, nbtk_entry, NBTK_TYPE_WIDGET);
+
+static void
+nbtk_entry_set_property (GObject      *gobject,
+                         guint         prop_id,
+                         const GValue *value,
+                         GParamSpec   *pspec)
+{
+  NbtkEntry *entry = NBTK_ENTRY (gobject);
+
+  switch (prop_id)
+    {
+    case PROP_HINT_TEXT:
+      nbtk_entry_set_hint_text (entry, g_value_get_string (value));
+      break;
+
+    case PROP_TEXT:
+      nbtk_entry_set_text (entry, g_value_get_string (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+nbtk_entry_get_property (GObject    *gobject,
+                         guint       prop_id,
+                         GValue     *value,
+                         GParamSpec *pspec)
+{
+  NbtkEntryPrivate *priv = NBTK_ENTRY_PRIV (gobject);
+
+  switch (prop_id)
+    {
+    case PROP_CLUTTER_TEXT:
+      g_value_set_object (value, priv->entry);
+      break;
+
+    case PROP_HINT_TEXT:
+      g_value_set_string (value, priv->hint);
+      break;
+
+    case PROP_TEXT:
+      g_value_set_string (value, clutter_text_get_text (CLUTTER_TEXT (priv->entry)));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+nbtk_entry_dispose (GObject *object)
+{
+  NbtkEntryPrivate *priv = NBTK_ENTRY_PRIV (object);
+
+  if (priv->entry)
+    {
+      clutter_actor_unparent (priv->entry);
+      priv->entry = NULL;
+    }
+}
+
+static void
+nbtk_entry_finalize (GObject *object)
+{
+  NbtkEntryPrivate *priv = NBTK_ENTRY_PRIV (object);
+
+  g_free (priv->hint);
+  priv->hint = NULL;
+}
+
+static void
+nbtk_entry_style_changed (NbtkWidget *self)
+{
+  NbtkEntryPrivate *priv = NBTK_ENTRY_PRIV (self);
+  ShellThemeNode *theme_node;
+  ClutterColor color;
+  const PangoFontDescription *font;
+  gchar *font_string;
+
+  theme_node = nbtk_widget_get_theme_node (self);
+
+  shell_theme_node_get_foreground_color (theme_node, &color);
+  clutter_text_set_color (CLUTTER_TEXT (priv->entry), &color);
+
+  if (shell_theme_node_get_color (theme_node, "caret-color", FALSE, &color))
+      clutter_text_set_cursor_color (CLUTTER_TEXT (priv->entry), &color);
+
+  if (shell_theme_node_get_color (theme_node, "selection-background-color", FALSE, &color))
+    clutter_text_set_selection_color (CLUTTER_TEXT (priv->entry), &color);
+
+  font = shell_theme_node_get_font (theme_node);
+  font_string = pango_font_description_to_string (font);
+  clutter_text_set_font_name (CLUTTER_TEXT (priv->entry), font_string);
+  g_free (font_string);
+
+  NBTK_WIDGET_CLASS (nbtk_entry_parent_class)->style_changed (self);
+}
+
+static void
+nbtk_entry_get_preferred_width (ClutterActor *actor,
+                                gfloat   for_height,
+                                gfloat  *min_width_p,
+                                gfloat  *natural_width_p)
+{
+  NbtkEntryPrivate *priv = NBTK_ENTRY_PRIV (actor);
+  ShellThemeNode *theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (actor));
+  gfloat icon_w;
+
+  shell_theme_node_adjust_for_height (theme_node, &for_height);
+
+  clutter_actor_get_preferred_width (priv->entry, for_height,
+                                     min_width_p,
+                                     natural_width_p);
+
+  if (priv->primary_icon)
+    {
+      clutter_actor_get_preferred_width (priv->primary_icon, -1, NULL, &icon_w);
+
+      if (min_width_p)
+        *min_width_p += icon_w + priv->spacing;
+
+      if (natural_width_p)
+        *natural_width_p += icon_w + priv->spacing;
+    }
+
+  if (priv->secondary_icon)
+    {
+      clutter_actor_get_preferred_width (priv->secondary_icon,
+                                         -1, NULL, &icon_w);
+
+      if (min_width_p)
+        *min_width_p += icon_w + priv->spacing;
+
+      if (natural_width_p)
+        *natural_width_p += icon_w + priv->spacing;
+    }
+
+  shell_theme_node_adjust_preferred_width (theme_node, min_width_p, natural_width_p);
+}
+
+static void
+nbtk_entry_get_preferred_height (ClutterActor *actor,
+                                 gfloat   for_width,
+                                 gfloat  *min_height_p,
+                                 gfloat  *natural_height_p)
+{
+  NbtkEntryPrivate *priv = NBTK_ENTRY_PRIV (actor);
+  ShellThemeNode *theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (actor));
+  gfloat icon_h;
+
+  shell_theme_node_adjust_for_width (theme_node, &for_width);
+
+  clutter_actor_get_preferred_height (priv->entry, for_width,
+                                      min_height_p,
+                                      natural_height_p);
+
+  if (priv->primary_icon)
+    {
+      clutter_actor_get_preferred_height (priv->primary_icon,
+                                          -1, NULL, &icon_h);
+
+      if (min_height_p && icon_h > *min_height_p)
+        *min_height_p = icon_h;
+
+      if (natural_height_p && icon_h > *natural_height_p)
+        *natural_height_p = icon_h;
+    }
+
+  if (priv->secondary_icon)
+    {
+      clutter_actor_get_preferred_height (priv->secondary_icon,
+                                          -1, NULL, &icon_h);
+
+      if (min_height_p && icon_h > *min_height_p)
+        *min_height_p = icon_h;
+
+      if (natural_height_p && icon_h > *natural_height_p)
+        *natural_height_p = icon_h;
+    }
+
+  shell_theme_node_adjust_preferred_height (theme_node, min_height_p, natural_height_p);
+}
+
+static void
+nbtk_entry_allocate (ClutterActor          *actor,
+                     const ClutterActorBox *box,
+                     ClutterAllocationFlags flags)
+{
+  NbtkEntryPrivate *priv = NBTK_ENTRY_PRIV (actor);
+  ShellThemeNode *theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (actor));
+  ClutterActorClass *parent_class;
+  ClutterActorBox content_box, child_box, icon_box;
+  gfloat icon_w, icon_h;
+  gfloat entry_h, min_h, pref_h, avail_h;
+
+  parent_class = CLUTTER_ACTOR_CLASS (nbtk_entry_parent_class);
+  parent_class->allocate (actor, box, flags);
+
+  shell_theme_node_get_content_box (theme_node, box, &content_box);
+
+  avail_h = content_box.y2 - content_box.y1;
+
+  child_box.x1 = content_box.x1;
+  child_box.x2 = content_box.x2;
+
+  if (priv->primary_icon)
+    {
+      clutter_actor_get_preferred_width (priv->primary_icon,
+                                         -1, NULL, &icon_w);
+      clutter_actor_get_preferred_height (priv->primary_icon,
+                                          -1, NULL, &icon_h);
+
+      icon_box.x1 = content_box.x1;
+      icon_box.x2 = icon_box.x1 + icon_w;
+
+      icon_box.y1 = (int) (content_box.y1 + avail_h / 2 - icon_h / 2);
+      icon_box.y2 = icon_box.y1 + icon_h;
+
+      clutter_actor_allocate (priv->primary_icon,
+                              &icon_box,
+                              flags);
+
+      /* reduce the size for the entry */
+      child_box.x1 += icon_w + priv->spacing;
+    }
+
+  if (priv->secondary_icon)
+    {
+      clutter_actor_get_preferred_width (priv->secondary_icon,
+                                         -1, NULL, &icon_w);
+      clutter_actor_get_preferred_height (priv->secondary_icon,
+                                          -1, NULL, &icon_h);
+
+      icon_box.x2 = content_box.x2;
+      icon_box.x1 = icon_box.x2 - icon_w;
+
+      icon_box.y1 = (int) (content_box.y1 + avail_h / 2 - icon_h / 2);
+      icon_box.y2 = icon_box.y1 + icon_h;
+
+      clutter_actor_allocate (priv->secondary_icon,
+                              &icon_box,
+                              flags);
+
+      /* reduce the size for the entry */
+      child_box.x2 -= icon_w - priv->spacing;
+    }
+
+  clutter_actor_get_preferred_height (priv->entry, child_box.x2 - child_box.x1,
+                                      &min_h, &pref_h);
+
+  entry_h = CLAMP (pref_h, min_h, avail_h);
+
+  child_box.y1 = (int) (content_box.y1 + avail_h / 2 - entry_h / 2);
+  child_box.y2 = child_box.y1 + entry_h;
+
+  clutter_actor_allocate (priv->entry, &child_box, flags);
+}
+
+static void
+clutter_text_focus_in_cb (ClutterText *text,
+                          ClutterActor *actor)
+{
+  NbtkEntryPrivate *priv = NBTK_ENTRY_PRIV (actor);
+
+  /* remove the hint if visible */
+  if (priv->hint
+      && !strcmp (clutter_text_get_text (text), priv->hint))
+    {
+      clutter_text_set_text (text, "");
+    }
+  nbtk_widget_set_style_pseudo_class (NBTK_WIDGET (actor), "focus");
+  clutter_text_set_cursor_visible (text, TRUE);
+}
+
+static void
+clutter_text_focus_out_cb (ClutterText  *text,
+                           ClutterActor *actor)
+{
+  NbtkEntryPrivate *priv = NBTK_ENTRY_PRIV (actor);
+
+  /* add a hint if the entry is empty */
+  if (priv->hint && !strcmp (clutter_text_get_text (text), ""))
+    {
+      clutter_text_set_text (text, priv->hint);
+      nbtk_widget_set_style_pseudo_class (NBTK_WIDGET (actor), "indeterminate");
+    }
+  else
+    {
+      nbtk_widget_set_style_pseudo_class (NBTK_WIDGET (actor), NULL);
+    }
+  clutter_text_set_cursor_visible (text, FALSE);
+}
+
+static void
+nbtk_entry_paint (ClutterActor *actor)
+{
+  NbtkEntryPrivate *priv = NBTK_ENTRY_PRIV (actor);
+  ClutterActorClass *parent_class;
+
+  parent_class = CLUTTER_ACTOR_CLASS (nbtk_entry_parent_class);
+  parent_class->paint (actor);
+
+  clutter_actor_paint (priv->entry);
+
+  if (priv->primary_icon)
+    clutter_actor_paint (priv->primary_icon);
+
+  if (priv->secondary_icon)
+    clutter_actor_paint (priv->secondary_icon);
+}
+
+static void
+nbtk_entry_pick (ClutterActor *actor,
+                 const ClutterColor *c)
+{
+  NbtkEntryPrivate *priv = NBTK_ENTRY_PRIV (actor);
+
+  CLUTTER_ACTOR_CLASS (nbtk_entry_parent_class)->pick (actor, c);
+
+  clutter_actor_paint (priv->entry);
+
+  if (priv->primary_icon)
+    clutter_actor_paint (priv->primary_icon);
+
+  if (priv->secondary_icon)
+    clutter_actor_paint (priv->secondary_icon);
+}
+
+static void
+nbtk_entry_map (ClutterActor *actor)
+{
+  NbtkEntryPrivate *priv = NBTK_ENTRY (actor)->priv;
+
+  CLUTTER_ACTOR_CLASS (nbtk_entry_parent_class)->map (actor);
+
+  clutter_actor_map (priv->entry);
+
+  if (priv->primary_icon)
+    clutter_actor_map (priv->primary_icon);
+
+  if (priv->secondary_icon)
+    clutter_actor_map (priv->secondary_icon);
+}
+
+static void
+nbtk_entry_unmap (ClutterActor *actor)
+{
+  NbtkEntryPrivate *priv = NBTK_ENTRY (actor)->priv;
+
+  CLUTTER_ACTOR_CLASS (nbtk_entry_parent_class)->unmap (actor);
+
+  clutter_actor_unmap (priv->entry);
+
+  if (priv->primary_icon)
+    clutter_actor_unmap (priv->primary_icon);
+
+  if (priv->secondary_icon)
+    clutter_actor_unmap (priv->secondary_icon);
+}
+
+static void
+nbtk_entry_clipboard_callback (NbtkClipboard *clipboard,
+                               const gchar   *text,
+                               gpointer       data)
+{
+  ClutterText *ctext = (ClutterText*) ((NbtkEntry *) data)->priv->entry;
+  gint cursor_pos;
+
+  if (!text)
+    return;
+
+  /* delete the current selection before pasting */
+  clutter_text_delete_selection (ctext);
+
+  /* "paste" the clipboard text into the entry */
+  cursor_pos = clutter_text_get_cursor_position (ctext);
+  clutter_text_insert_text (ctext, text, cursor_pos);
+}
+
+static gboolean
+nbtk_entry_key_press_event (ClutterActor    *actor,
+                            ClutterKeyEvent *event)
+{
+  NbtkEntryPrivate *priv = NBTK_ENTRY_PRIV (actor);
+
+  /* This is expected to handle events that were emitted for the inner
+     ClutterText. They only reach this function if the ClutterText
+     didn't handle them */
+
+  /* paste */
+  if ((event->modifier_state & CLUTTER_CONTROL_MASK)
+      && event->keyval == CLUTTER_v)
+    {
+      NbtkClipboard *clipboard;
+
+      clipboard = nbtk_clipboard_get_default ();
+
+      nbtk_clipboard_get_text (clipboard, nbtk_entry_clipboard_callback, actor);
+
+      return TRUE;
+    }
+
+  /* copy */
+  if ((event->modifier_state & CLUTTER_CONTROL_MASK)
+      && event->keyval == CLUTTER_c)
+    {
+      NbtkClipboard *clipboard;
+      gchar *text;
+
+      clipboard = nbtk_clipboard_get_default ();
+
+      text = clutter_text_get_selection ((ClutterText*) priv->entry);
+
+      if (text && strlen (text))
+        nbtk_clipboard_set_text (clipboard, text);
+
+      return TRUE;
+    }
+
+
+  /* cut */
+  if ((event->modifier_state & CLUTTER_CONTROL_MASK)
+      && event->keyval == CLUTTER_x)
+    {
+      NbtkClipboard *clipboard;
+      gchar *text;
+
+      clipboard = nbtk_clipboard_get_default ();
+
+      text = clutter_text_get_selection ((ClutterText*) priv->entry);
+
+      if (text && strlen (text))
+        {
+          nbtk_clipboard_set_text (clipboard, text);
+
+          /* now delete the text */
+          clutter_text_delete_selection ((ClutterText *) priv->entry);
+        }
+
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+static void
+nbtk_entry_key_focus_in (ClutterActor *actor)
+{
+  NbtkEntryPrivate *priv = NBTK_ENTRY_PRIV (actor);
+
+  /* We never want key focus. The ClutterText should be given first
+     pass for all key events */
+  clutter_actor_grab_key_focus (priv->entry);
+}
+
+static void
+nbtk_entry_class_init (NbtkEntryClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
+  NbtkWidgetClass *widget_class = NBTK_WIDGET_CLASS (klass);
+  GParamSpec *pspec;
+
+  g_type_class_add_private (klass, sizeof (NbtkEntryPrivate));
+
+  gobject_class->set_property = nbtk_entry_set_property;
+  gobject_class->get_property = nbtk_entry_get_property;
+  gobject_class->finalize = nbtk_entry_finalize;
+  gobject_class->dispose = nbtk_entry_dispose;
+
+  actor_class->get_preferred_width = nbtk_entry_get_preferred_width;
+  actor_class->get_preferred_height = nbtk_entry_get_preferred_height;
+  actor_class->allocate = nbtk_entry_allocate;
+  actor_class->paint = nbtk_entry_paint;
+  actor_class->pick = nbtk_entry_pick;
+  actor_class->map = nbtk_entry_map;
+  actor_class->unmap = nbtk_entry_unmap;
+
+  actor_class->key_press_event = nbtk_entry_key_press_event;
+  actor_class->key_focus_in = nbtk_entry_key_focus_in;
+
+  widget_class->style_changed = nbtk_entry_style_changed;
+
+  pspec = g_param_spec_object ("clutter-text",
+			       "Clutter Text",
+			       "Internal ClutterText actor",
+			       CLUTTER_TYPE_TEXT,
+			       G_PARAM_READABLE);
+  g_object_class_install_property (gobject_class, PROP_CLUTTER_TEXT, pspec);
+
+  pspec = g_param_spec_string ("hint-text",
+                               "Hint Text",
+                               "Text to display when the entry is not focused "
+                               "and the text property is empty",
+                               NULL, G_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_HINT_TEXT, pspec);
+
+  pspec = g_param_spec_string ("text",
+                               "Text",
+                               "Text of the entry",
+                               NULL, G_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_TEXT, pspec);
+
+  /* signals */
+  /**
+   * NbtkEntry::primary-icon-clicked:
+   *
+   * Emitted when the primary icon is clicked
+   */
+  entry_signals[PRIMARY_ICON_CLICKED] =
+    g_signal_new ("primary-icon-clicked",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_LAST,
+                  G_STRUCT_OFFSET (NbtkEntryClass, primary_icon_clicked),
+                  NULL, NULL,
+                  _nbtk_marshal_VOID__VOID,
+                  G_TYPE_NONE, 0);
+  /**
+   * NbtkEntry::secondary-icon-clicked:
+   *
+   * Emitted when the secondary icon is clicked
+   */
+  entry_signals[SECONDARY_ICON_CLICKED] =
+    g_signal_new ("secondary-icon-clicked",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_LAST,
+                  G_STRUCT_OFFSET (NbtkEntryClass, secondary_icon_clicked),
+                  NULL, NULL,
+                  _nbtk_marshal_VOID__VOID,
+                  G_TYPE_NONE, 0);
+}
+
+static void
+nbtk_entry_init (NbtkEntry *entry)
+{
+  NbtkEntryPrivate *priv;
+
+  priv = entry->priv = NBTK_ENTRY_GET_PRIVATE (entry);
+
+  priv->entry = g_object_new (CLUTTER_TYPE_IMTEXT,
+                              "line-alignment", PANGO_ALIGN_LEFT,
+                              "editable", TRUE,
+                              "reactive", TRUE,
+                              "single-line-mode", TRUE,
+                              NULL);
+
+  g_signal_connect (priv->entry, "key-focus-in",
+                    G_CALLBACK (clutter_text_focus_in_cb), entry);
+
+  g_signal_connect (priv->entry, "key-focus-out",
+                    G_CALLBACK (clutter_text_focus_out_cb), entry);
+
+  priv->spacing = 6.0f;
+
+  clutter_actor_set_parent (priv->entry, CLUTTER_ACTOR (entry));
+  clutter_actor_set_reactive ((ClutterActor *) entry, TRUE);
+
+  /* set cursor hidden until we receive focus */
+  clutter_text_set_cursor_visible ((ClutterText *) priv->entry, FALSE);
+}
+
+/**
+ * nbtk_entry_new:
+ * @text: text to set the entry to
+ *
+ * Create a new #NbtkEntry with the specified entry
+ *
+ * Returns: a new #NbtkEntry
+ */
+NbtkWidget *
+nbtk_entry_new (const gchar *text)
+{
+  NbtkWidget *entry;
+
+  /* add the entry to the stage, but don't allow it to be visible */
+  entry = g_object_new (NBTK_TYPE_ENTRY,
+                        "text", text,
+                        NULL);
+
+  return entry;
+}
+
+/**
+ * nbtk_entry_get_text:
+ * @entry: a #NbtkEntry
+ *
+ * Get the text displayed on the entry
+ *
+ * Returns: the text for the entry. This must not be freed by the application
+ */
+G_CONST_RETURN gchar *
+nbtk_entry_get_text (NbtkEntry *entry)
+{
+  g_return_val_if_fail (NBTK_IS_ENTRY (entry), NULL);
+
+  return clutter_text_get_text (CLUTTER_TEXT (entry->priv->entry));
+}
+
+/**
+ * nbtk_entry_set_text:
+ * @entry: a #NbtkEntry
+ * @text: text to set the entry to
+ *
+ * Sets the text displayed on the entry
+ */
+void
+nbtk_entry_set_text (NbtkEntry *entry,
+                     const gchar *text)
+{
+  NbtkEntryPrivate *priv;
+
+  g_return_if_fail (NBTK_IS_ENTRY (entry));
+
+  priv = entry->priv;
+
+  /* set a hint if we are blanking the entry */
+  if (priv->hint
+      && text && !strcmp ("", text)
+      && !HAS_FOCUS (priv->entry))
+    {
+      text = priv->hint;
+      nbtk_widget_set_style_pseudo_class (NBTK_WIDGET (entry), "indeterminate");
+    }
+  else
+    {
+      if (HAS_FOCUS (priv->entry))
+        nbtk_widget_set_style_pseudo_class (NBTK_WIDGET (entry), "focus");
+      else
+        nbtk_widget_set_style_pseudo_class (NBTK_WIDGET (entry), NULL);
+    }
+
+  clutter_text_set_text (CLUTTER_TEXT (priv->entry), text);
+
+  g_object_notify (G_OBJECT (entry), "text");
+}
+
+/**
+ * nbtk_entry_get_clutter_text:
+ * @entry: a #NbtkEntry
+ *
+ * Retrieve the internal #ClutterText so that extra parameters can be set
+ *
+ * Returns: (transfer none): the #ClutterText used by #NbtkEntry. The entry is
+ * owned by the #NbtkEntry and should not be unref'ed by the application.
+ */
+ClutterActor*
+nbtk_entry_get_clutter_text (NbtkEntry *entry)
+{
+  g_return_val_if_fail (NBTK_ENTRY (entry), NULL);
+
+  return entry->priv->entry;
+}
+
+/**
+ * nbtk_entry_set_hint_text:
+ * @entry: a #NbtkEntry
+ * @text: text to set as the entry hint
+ *
+ * Sets the text to display when the entry is empty and unfocused. When the
+ * entry is displaying the hint, it has a pseudo class of "indeterminate".
+ * A value of NULL unsets the hint.
+ */
+void
+nbtk_entry_set_hint_text (NbtkEntry *entry,
+                          const gchar *text)
+{
+  NbtkEntryPrivate *priv;
+
+  g_return_if_fail (NBTK_IS_ENTRY (entry));
+
+  priv = entry->priv;
+
+  g_free (priv->hint);
+
+  priv->hint = g_strdup (text);
+
+  if (!strcmp (clutter_text_get_text (CLUTTER_TEXT (priv->entry)), ""))
+    {
+      clutter_text_set_text (CLUTTER_TEXT (priv->entry), priv->hint);
+      nbtk_widget_set_style_pseudo_class (NBTK_WIDGET (entry), "indeterminate");
+    }
+}
+
+/**
+ * nbtk_entry_get_hint_text:
+ * @entry: a #NbtkEntry
+ *
+ * Gets the text that is displayed when the entry is empty and unfocused
+ *
+ * Returns: the current value of the hint property. This string is owned by the
+ * #NbtkEntry and should not be freed or modified.
+ */
+G_CONST_RETURN
+gchar *
+nbtk_entry_get_hint_text (NbtkEntry *entry)
+{
+  g_return_val_if_fail (NBTK_IS_ENTRY (entry), NULL);
+
+  return entry->priv->hint;
+}
+
+static gboolean
+_nbtk_entry_icon_press_cb (ClutterActor       *actor,
+                           ClutterButtonEvent *event,
+                           NbtkEntry          *entry)
+{
+  NbtkEntryPrivate *priv = entry->priv;
+
+  if (actor == priv->primary_icon)
+    g_signal_emit (entry, entry_signals[PRIMARY_ICON_CLICKED], 0);
+  else
+    g_signal_emit (entry, entry_signals[SECONDARY_ICON_CLICKED], 0);
+
+  return FALSE;
+}
+
+static void
+_nbtk_entry_set_icon_from_file (NbtkEntry     *entry,
+                                ClutterActor **icon,
+                                const gchar   *filename)
+{
+  if (*icon)
+    {
+      g_signal_handlers_disconnect_by_func (*icon,
+                                            _nbtk_entry_icon_press_cb,
+                                            entry);
+      clutter_actor_unparent (*icon);
+      *icon = NULL;
+    }
+
+  if (filename)
+    {
+      NbtkTextureCache *cache;
+
+      cache = nbtk_texture_cache_get_default ();
+
+
+
+      *icon = (ClutterActor*) nbtk_texture_cache_get_texture (cache, filename, FALSE);
+
+      clutter_actor_set_reactive (*icon, TRUE);
+      clutter_actor_set_parent (*icon, CLUTTER_ACTOR (entry));
+      g_signal_connect (*icon, "button-release-event",
+                        G_CALLBACK (_nbtk_entry_icon_press_cb), entry);
+    }
+
+  clutter_actor_queue_relayout (CLUTTER_ACTOR (entry));
+}
+
+/**
+ * nbtk_entry_set_primary_icon_from_file:
+ * @entry: a #NbtkEntry
+ * @filename: filename of an icon
+ *
+ * Set the primary icon of the entry to the given filename
+ */
+void
+nbtk_entry_set_primary_icon_from_file (NbtkEntry   *entry,
+                                       const gchar *filename)
+{
+  NbtkEntryPrivate *priv;
+
+  g_return_if_fail (NBTK_IS_ENTRY (entry));
+
+  priv = entry->priv;
+
+  _nbtk_entry_set_icon_from_file (entry, &priv->primary_icon, filename);
+
+}
+
+/**
+ * nbtk_entry_set_secondary_icon_from_file:
+ * @entry: a #NbtkEntry
+ * @filename: filename of an icon
+ *
+ * Set the primary icon of the entry to the given filename
+ */
+void
+nbtk_entry_set_secondary_icon_from_file (NbtkEntry   *entry,
+                                         const gchar *filename)
+{
+  NbtkEntryPrivate *priv;
+
+  g_return_if_fail (NBTK_IS_ENTRY (entry));
+
+  priv = entry->priv;
+
+  _nbtk_entry_set_icon_from_file (entry, &priv->secondary_icon, filename);
+
+}

src/nbtk/nbtk-entry.h

@@ -0,0 +1,88 @@
+/*
+ * nbtk-entry.h: Plain entry actor
+ *
+ * Copyright 2008, 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * Boston, MA 02111-1307, USA.
+ *
+ * Written by: Thomas Wood <thomas@linux.intel.com>
+ *
+ */
+
+#if !defined(NBTK_H_INSIDE) && !defined(NBTK_COMPILATION)
+#error "Only <nbtk/nbtk.h> can be included directly.h"
+#endif
+
+#ifndef __NBTK_ENTRY_H__
+#define __NBTK_ENTRY_H__
+
+G_BEGIN_DECLS
+
+#include <nbtk/nbtk-widget.h>
+
+#define NBTK_TYPE_ENTRY                (nbtk_entry_get_type ())
+#define NBTK_ENTRY(obj)                (G_TYPE_CHECK_INSTANCE_CAST ((obj), NBTK_TYPE_ENTRY, NbtkEntry))
+#define NBTK_IS_ENTRY(obj)             (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NBTK_TYPE_ENTRY))
+#define NBTK_ENTRY_CLASS(klass)        (G_TYPE_CHECK_CLASS_CAST ((klass), NBTK_TYPE_ENTRY, NbtkEntryClass))
+#define NBTK_IS_ENTRY_CLASS(klass)     (G_TYPE_CHECK_CLASS_TYPE ((klass), NBTK_TYPE_ENTRY))
+#define NBTK_ENTRY_GET_CLASS(obj)      (G_TYPE_INSTANCE_GET_CLASS ((obj), NBTK_TYPE_ENTRY, NbtkEntryClass))
+
+typedef struct _NbtkEntry              NbtkEntry;
+typedef struct _NbtkEntryPrivate       NbtkEntryPrivate;
+typedef struct _NbtkEntryClass         NbtkEntryClass;
+
+/**
+ * NbtkEntry:
+ *
+ * The contents of this structure is private and should only be accessed using
+ * the provided API.
+ */
+struct _NbtkEntry
+{
+  /*< private >*/
+  NbtkWidget parent_instance;
+
+  NbtkEntryPrivate *priv;
+};
+
+struct _NbtkEntryClass
+{
+  NbtkWidgetClass parent_class;
+
+  /* signals */
+  void (*primary_icon_clicked) (NbtkEntry *entry);
+  void (*secondary_icon_clicked) (NbtkEntry *entry);
+};
+
+GType nbtk_entry_get_type (void) G_GNUC_CONST;
+
+NbtkWidget *          nbtk_entry_new              (const gchar *text);
+G_CONST_RETURN gchar *nbtk_entry_get_text         (NbtkEntry   *entry);
+void                  nbtk_entry_set_text         (NbtkEntry   *entry,
+                                                   const gchar *text);
+ClutterActor*         nbtk_entry_get_clutter_text (NbtkEntry   *entry);
+
+void                  nbtk_entry_set_hint_text (NbtkEntry *entry,
+                                                const gchar *text);
+G_CONST_RETURN gchar *nbtk_entry_get_hint_text (NbtkEntry *entry);
+
+void nbtk_entry_set_primary_icon_from_file (NbtkEntry   *entry,
+                                            const gchar *filename);
+void nbtk_entry_set_secondary_icon_from_file (NbtkEntry   *entry,
+                                              const gchar *filename);
+
+G_END_DECLS
+
+#endif /* __NBTK_ENTRY_H__ */

src/nbtk/nbtk-enum-types.c.in

@@ -0,0 +1,30 @@
+/*** BEGIN file-header ***/
+#include "nbtk-enum-types.h"
+/*** END file-header ***/
+
+/*** BEGIN file-production ***/
+/* enumerations from "@filename@" */
+#include "@filename@"
+/*** END file-production ***/
+
+/*** BEGIN value-header ***/
+GType
+@enum_name@_get_type(void) {
+  static GType enum_type_id = 0;
+  if (G_UNLIKELY (!enum_type_id))
+    {
+      static const G@Type@Value values[] = {
+/*** END value-header ***/
+
+/*** BEGIN value-production ***/
+        { @VALUENAME@, "@VALUENAME@", "@valuenick@" },
+/*** END value-production ***/
+
+/*** BEGIN value-tail ***/
+        { 0, NULL, NULL }
+      };
+      enum_type_id = g_@type@_register_static (g_intern_static_string ("@EnumName@"), values);
+    }
+  return enum_type_id;
+}
+/*** END value-tail ***/

src/nbtk/nbtk-enum-types.h.in

@@ -0,0 +1,29 @@
+/*** BEGIN file-header ***/
+#if !defined(NBTK_H_INSIDE) && !defined(NBTK_COMPILATION)
+#error "Only <nbtk/nbtk.h> can be included directly.h"
+#endif
+
+#ifndef __NBTK_ENUM_TYPES_H__
+#define __NBTK_ENUM_TYPES_H__
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+/*** END file-header ***/
+
+/*** BEGIN file-production ***/
+/* enumerations from "@filename@" */
+/*** END file-production ***/
+
+/*** BEGIN file-tail ***/
+G_END_DECLS
+
+#endif /* !__NBTK_ENUM_TYPES_H__ */
+/*** END file-tail ***/
+
+/*** BEGIN value-header ***/
+GType @enum_name@_get_type (void) G_GNUC_CONST;
+#define NBTK_TYPE_@ENUMSHORT@ (@enum_name@_get_type())
+
+/*** END value-header ***/

src/nbtk/nbtk-label.c

@@ -0,0 +1,341 @@
+/*
+ * nbtk-label.c: Plain label actor
+ *
+ * Copyright 2008,2009 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by: Thomas Wood <thomas@linux.intel.com>
+ *
+ */
+
+/**
+ * SECTION:nbtk-label
+ * @short_description: Widget for displaying text
+ *
+ * #NbtkLabel is a simple widget for displaying text. It derives from
+ * #NbtkWidget to add extra style and placement functionality over
+ * #ClutterText. The internal #ClutterText is publicly accessibly to allow
+ * applications to set further properties.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <glib.h>
+
+#include <clutter/clutter.h>
+
+#include "nbtk-label.h"
+
+#include "nbtk-widget.h"
+
+enum
+{
+  PROP_0,
+
+  PROP_CLUTTER_TEXT,
+  PROP_TEXT
+};
+
+#define NBTK_LABEL_GET_PRIVATE(obj)     (G_TYPE_INSTANCE_GET_PRIVATE ((obj), NBTK_TYPE_LABEL, NbtkLabelPrivate))
+
+struct _NbtkLabelPrivate
+{
+  ClutterActor *label;
+};
+
+G_DEFINE_TYPE (NbtkLabel, nbtk_label, NBTK_TYPE_WIDGET);
+
+static void
+nbtk_label_set_property (GObject      *gobject,
+                           guint         prop_id,
+                           const GValue *value,
+                           GParamSpec   *pspec)
+{
+  NbtkLabel *label = NBTK_LABEL (gobject);
+
+  switch (prop_id)
+    {
+    case PROP_TEXT:
+      nbtk_label_set_text (label, g_value_get_string (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+nbtk_label_get_property (GObject    *gobject,
+                           guint       prop_id,
+                           GValue     *value,
+                           GParamSpec *pspec)
+{
+  NbtkLabelPrivate *priv = NBTK_LABEL (gobject)->priv;
+
+  switch (prop_id)
+    {
+    case PROP_CLUTTER_TEXT:
+      g_value_set_object (value, priv->label);
+      break;
+
+    case PROP_TEXT:
+      g_value_set_string (value, clutter_text_get_text (CLUTTER_TEXT (priv->label)));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+nbtk_label_style_changed (NbtkWidget *self)
+{
+  NbtkLabelPrivate *priv;
+  ShellThemeNode *theme_node;
+  ClutterColor color;
+  const PangoFontDescription *font;
+  gchar *font_string;
+
+  priv = NBTK_LABEL (self)->priv;
+  theme_node = nbtk_widget_get_theme_node (self);
+  shell_theme_node_get_foreground_color (theme_node, &color);
+  clutter_text_set_color (CLUTTER_TEXT (priv->label), &color);
+
+  font = shell_theme_node_get_font (theme_node);
+  font_string = pango_font_description_to_string (font);
+  clutter_text_set_font_name (CLUTTER_TEXT (priv->label), font_string);
+  g_free (font_string);
+
+  NBTK_WIDGET_CLASS (nbtk_label_parent_class)->style_changed (self);
+}
+
+static void
+nbtk_label_get_preferred_width (ClutterActor *actor,
+                                gfloat        for_height,
+                                gfloat       *min_width_p,
+                                gfloat       *natural_width_p)
+{
+  NbtkLabelPrivate *priv = NBTK_LABEL (actor)->priv;
+  ShellThemeNode *theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (actor));
+
+  shell_theme_node_adjust_for_height (theme_node, &for_height);
+
+  clutter_actor_get_preferred_width (priv->label, for_height,
+                                     min_width_p,
+                                     natural_width_p);
+
+  shell_theme_node_adjust_preferred_width (theme_node, min_width_p, natural_width_p);
+}
+
+static void
+nbtk_label_get_preferred_height (ClutterActor *actor,
+                                 gfloat        for_width,
+                                 gfloat       *min_height_p,
+                                 gfloat       *natural_height_p)
+{
+  NbtkLabelPrivate *priv = NBTK_LABEL (actor)->priv;
+  ShellThemeNode *theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (actor));
+
+  shell_theme_node_adjust_for_width (theme_node, &for_width);
+
+  clutter_actor_get_preferred_height (priv->label, for_width,
+                                      min_height_p,
+                                      natural_height_p);
+
+  shell_theme_node_adjust_preferred_height (theme_node, min_height_p, natural_height_p);
+}
+
+static void
+nbtk_label_allocate (ClutterActor          *actor,
+                     const ClutterActorBox *box,
+                     ClutterAllocationFlags flags)
+{
+  NbtkLabelPrivate *priv = NBTK_LABEL (actor)->priv;
+  ShellThemeNode *theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (actor));
+  ClutterActorClass *parent_class;
+  ClutterActorBox content_box;
+
+  shell_theme_node_get_content_box (theme_node, box, &content_box);
+
+  parent_class = CLUTTER_ACTOR_CLASS (nbtk_label_parent_class);
+  parent_class->allocate (actor, box, flags);
+
+  clutter_actor_allocate (priv->label, &content_box, flags);
+}
+
+static void
+nbtk_label_paint (ClutterActor *actor)
+{
+  NbtkLabelPrivate *priv = NBTK_LABEL (actor)->priv;
+  ClutterActorClass *parent_class;
+
+  parent_class = CLUTTER_ACTOR_CLASS (nbtk_label_parent_class);
+  parent_class->paint (actor);
+
+  clutter_actor_paint (priv->label);
+}
+
+static void
+nbtk_label_map (ClutterActor *actor)
+{
+  NbtkLabelPrivate *priv = NBTK_LABEL (actor)->priv;
+
+  CLUTTER_ACTOR_CLASS (nbtk_label_parent_class)->map (actor);
+
+  clutter_actor_map (priv->label);
+}
+
+static void
+nbtk_label_unmap (ClutterActor *actor)
+{
+  NbtkLabelPrivate *priv = NBTK_LABEL (actor)->priv;
+
+  CLUTTER_ACTOR_CLASS (nbtk_label_parent_class)->unmap (actor);
+
+  clutter_actor_unmap (priv->label);
+}
+
+static void
+nbtk_label_class_init (NbtkLabelClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
+  NbtkWidgetClass *widget_class = NBTK_WIDGET_CLASS (klass);
+  GParamSpec *pspec;
+
+  g_type_class_add_private (klass, sizeof (NbtkLabelPrivate));
+
+  gobject_class->set_property = nbtk_label_set_property;
+  gobject_class->get_property = nbtk_label_get_property;
+
+  actor_class->paint = nbtk_label_paint;
+  actor_class->allocate = nbtk_label_allocate;
+  actor_class->get_preferred_width = nbtk_label_get_preferred_width;
+  actor_class->get_preferred_height = nbtk_label_get_preferred_height;
+  actor_class->map = nbtk_label_map;
+  actor_class->unmap = nbtk_label_unmap;
+
+  widget_class->style_changed = nbtk_label_style_changed;
+
+  pspec = g_param_spec_object ("clutter-text",
+			       "Clutter Text",
+			       "Internal ClutterText actor",
+			       CLUTTER_TYPE_TEXT,
+			       G_PARAM_READABLE);
+  g_object_class_install_property (gobject_class, PROP_CLUTTER_TEXT, pspec);
+
+  pspec = g_param_spec_string ("text",
+                               "Text",
+                               "Text of the label",
+                               NULL, G_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_TEXT, pspec);
+
+}
+
+static void
+nbtk_label_init (NbtkLabel *label)
+{
+  NbtkLabelPrivate *priv;
+
+  label->priv = priv = NBTK_LABEL_GET_PRIVATE (label);
+
+  label->priv->label = g_object_new (CLUTTER_TYPE_TEXT,
+                                     "ellipsize", PANGO_ELLIPSIZE_END,
+                                     NULL);
+
+  clutter_actor_set_parent (priv->label, CLUTTER_ACTOR (label));
+}
+
+/**
+ * nbtk_label_new:
+ * @text: text to set the label to
+ *
+ * Create a new #NbtkLabel with the specified label
+ *
+ * Returns: a new #NbtkLabel
+ */
+NbtkWidget *
+nbtk_label_new (const gchar *text)
+{
+  if (text == NULL || *text == '\0')
+    return g_object_new (NBTK_TYPE_LABEL, NULL);
+  else
+    return g_object_new (NBTK_TYPE_LABEL,
+                         "text", text,
+                         NULL);
+}
+
+/**
+ * nbtk_label_get_text:
+ * @label: a #NbtkLabel
+ *
+ * Get the text displayed on the label
+ *
+ * Returns: the text for the label. This must not be freed by the application
+ */
+G_CONST_RETURN gchar *
+nbtk_label_get_text (NbtkLabel *label)
+{
+  g_return_val_if_fail (NBTK_IS_LABEL (label), NULL);
+
+  return clutter_text_get_text (CLUTTER_TEXT (label->priv->label));
+}
+
+/**
+ * nbtk_label_set_text:
+ * @label: a #NbtkLabel
+ * @text: text to set the label to
+ *
+ * Sets the text displayed on the label
+ */
+void
+nbtk_label_set_text (NbtkLabel *label,
+                     const gchar *text)
+{
+  NbtkLabelPrivate *priv;
+
+  g_return_if_fail (NBTK_IS_LABEL (label));
+  g_return_if_fail (text != NULL);
+
+  priv = label->priv;
+
+  clutter_text_set_text (CLUTTER_TEXT (priv->label), text);
+
+  g_object_notify (G_OBJECT (label), "text");
+}
+
+/**
+ * nbtk_label_get_clutter_text:
+ * @label: a #NbtkLabel
+ *
+ * Retrieve the internal #ClutterText so that extra parameters can be set
+ *
+ * Returns: (transfer none): ethe #ClutterText used by #NbtkLabel. The label
+ * is owned by the #NbtkLabel and should not be unref'ed by the application.
+ */
+ClutterActor*
+nbtk_label_get_clutter_text (NbtkLabel *label)
+{
+  g_return_val_if_fail (NBTK_LABEL (label), NULL);
+
+  return label->priv->label;
+}

src/nbtk/nbtk-label.h

@@ -0,0 +1,75 @@
+/*
+ * nbtk-label.h: Plain label actor
+ *
+ * Copyright 2008, 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * Boston, MA 02111-1307, USA.
+ *
+ * Written by: Thomas Wood <thomas@linux.intel.com>
+ *
+ */
+
+#if !defined(NBTK_H_INSIDE) && !defined(NBTK_COMPILATION)
+#error "Only <nbtk/nbtk.h> can be included directly.h"
+#endif
+
+#ifndef __NBTK_LABEL_H__
+#define __NBTK_LABEL_H__
+
+G_BEGIN_DECLS
+
+#include <nbtk/nbtk-widget.h>
+
+#define NBTK_TYPE_LABEL                (nbtk_label_get_type ())
+#define NBTK_LABEL(obj)                (G_TYPE_CHECK_INSTANCE_CAST ((obj), NBTK_TYPE_LABEL, NbtkLabel))
+#define NBTK_IS_LABEL(obj)             (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NBTK_TYPE_LABEL))
+#define NBTK_LABEL_CLASS(klass)        (G_TYPE_CHECK_CLASS_CAST ((klass), NBTK_TYPE_LABEL, NbtkLabelClass))
+#define NBTK_IS_LABEL_CLASS(klass)     (G_TYPE_CHECK_CLASS_TYPE ((klass), NBTK_TYPE_LABEL))
+#define NBTK_LABEL_GET_CLASS(obj)      (G_TYPE_INSTANCE_GET_CLASS ((obj), NBTK_TYPE_LABEL, NbtkLabelClass))
+
+typedef struct _NbtkLabel              NbtkLabel;
+typedef struct _NbtkLabelPrivate       NbtkLabelPrivate;
+typedef struct _NbtkLabelClass         NbtkLabelClass;
+
+/**
+ * NbtkLabel:
+ *
+ * The contents of this structure is private and should only be accessed using
+ * the provided API.
+ */
+struct _NbtkLabel
+{
+  /*< private >*/
+  NbtkWidget parent_instance;
+
+  NbtkLabelPrivate *priv;
+};
+
+struct _NbtkLabelClass
+{
+  NbtkWidgetClass parent_class;
+};
+
+GType nbtk_label_get_type (void) G_GNUC_CONST;
+
+NbtkWidget *          nbtk_label_new              (const gchar *text);
+G_CONST_RETURN gchar *nbtk_label_get_text         (NbtkLabel   *label);
+void                  nbtk_label_set_text         (NbtkLabel   *label,
+                                                   const gchar *text);
+ClutterActor *        nbtk_label_get_clutter_text (NbtkLabel   *label);
+
+G_END_DECLS
+
+#endif /* __NBTK_LABEL_H__ */

src/nbtk/nbtk-marshal.list

@@ -0,0 +1,12 @@
+VOID:OBJECT
+VOID:VOID
+VOID:PARAM
+VOID:POINTER
+VOID:UINT
+VOID:UINT,UINT
+VOID:OBJECT,OBJECT
+VOID:STRING,OBJECT
+VOID:OBJECT,OBJECT,INT,INT
+VOID:OBJECT,FLOAT,FLOAT,INT,ENUM
+VOID:FLOAT,FLOAT,INT,ENUM
+VOID:FLOAT,FLOAT

src/nbtk/nbtk-private.c

@@ -0,0 +1,111 @@
+#include "nbtk-private.h"
+
+/* Utility function to modify a child allocation box with respect to the
+ * x/y-fill child properties. Expects childbox to contain the available
+ * allocation space.
+ */
+void
+_nbtk_allocate_fill (ClutterActor *child,
+                     ClutterActorBox *childbox,
+                     NbtkAlign x_alignment,
+                     NbtkAlign y_alignment,
+                     gboolean x_fill,
+                     gboolean y_fill)
+{
+  gfloat natural_width, natural_height;
+  gfloat min_width, min_height;
+  gfloat child_width, child_height;
+  gfloat available_width, available_height;
+  ClutterRequestMode request;
+  ClutterActorBox allocation = { 0, };
+  gdouble x_align, y_align;
+
+  if (x_alignment == NBTK_ALIGN_START)
+    x_align = 0.0;
+  else if (x_alignment == NBTK_ALIGN_MIDDLE)
+    x_align = 0.5;
+  else
+    x_align = 1.0;
+
+  if (y_alignment == NBTK_ALIGN_START)
+    y_align = 0.0;
+  else if (y_alignment == NBTK_ALIGN_MIDDLE)
+    y_align = 0.5;
+  else
+    y_align = 1.0;
+
+  available_width  = childbox->x2 - childbox->x1;
+  available_height = childbox->y2 - childbox->y1;
+
+  if (available_width < 0)
+    available_width = 0;
+
+  if (available_height < 0)
+    available_height = 0;
+
+  if (x_fill)
+    {
+      allocation.x1 = childbox->x1;
+      allocation.x2 = (int) (allocation.x1 + available_width);
+    }
+
+  if (y_fill)
+    {
+      allocation.y1 = childbox->y1;
+      allocation.y2 = (int) (allocation.y1 + available_height);
+    }
+
+  /* if we are filling horizontally and vertically then we're done */
+  if (x_fill && y_fill)
+    {
+      *childbox = allocation;
+      return;
+    }
+
+  request = CLUTTER_REQUEST_HEIGHT_FOR_WIDTH;
+  g_object_get (G_OBJECT (child), "request-mode", &request, NULL);
+
+  if (request == CLUTTER_REQUEST_HEIGHT_FOR_WIDTH)
+    {
+      clutter_actor_get_preferred_width (child, available_height,
+                                         &min_width,
+                                         &natural_width);
+
+      child_width = CLAMP (natural_width, min_width, available_width);
+
+      clutter_actor_get_preferred_height (child, child_width,
+                                          &min_height,
+                                          &natural_height);
+
+      child_height = CLAMP (natural_height, min_height, available_height);
+    }
+  else
+    {
+      clutter_actor_get_preferred_height (child, available_width,
+                                          &min_height,
+                                          &natural_height);
+
+      child_height = CLAMP (natural_height, min_height, available_height);
+
+      clutter_actor_get_preferred_width (child, child_height,
+                                         &min_width,
+                                         &natural_width);
+
+      child_width = CLAMP (natural_width, min_width, available_width);
+    }
+
+  if (!x_fill)
+    {
+      allocation.x1 = childbox->x1 + (int) ((available_width - child_width) * x_align);
+      allocation.x2 = allocation.x1 + (int) child_width;
+    }
+
+  if (!y_fill)
+    {
+      allocation.y1 = childbox->y1 + (int) ((available_height - child_height) * y_align);
+      allocation.y2 = allocation.y1 + (int) child_height;
+    }
+
+  *childbox = allocation;
+
+}

src/nbtk/nbtk-private.h

@@ -0,0 +1,49 @@
+/*
+ * nbtk-private.h: Private declarations
+ *
+ * Copyright 2007 OpenedHand
+ * Copyright 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef __NBTK_PRIVATE_H__
+#define __NBTK_PRIVATE_H__
+
+#include <glib.h>
+#include "nbtk-widget.h"
+#include "nbtk-bin.h"
+
+G_BEGIN_DECLS
+
+#define I_(str)         (g_intern_static_string ((str)))
+
+#define NBTK_PARAM_READABLE     \
+        (G_PARAM_READABLE |     \
+         G_PARAM_STATIC_NICK | G_PARAM_STATIC_NAME | G_PARAM_STATIC_BLURB)
+
+#define NBTK_PARAM_READWRITE    \
+        (G_PARAM_READABLE | G_PARAM_WRITABLE | \
+         G_PARAM_STATIC_NICK | G_PARAM_STATIC_NAME | G_PARAM_STATIC_BLURB)
+
+G_END_DECLS
+
+ClutterActor *_nbtk_widget_get_dnd_clone (NbtkWidget *widget);
+void _nbtk_bin_get_align_factors (NbtkBin *bin, gdouble *x_align, gdouble *y_align);
+
+void _nbtk_allocate_fill (ClutterActor *child, ClutterActorBox *childbox, NbtkAlign x_align, NbtkAlign y_align, gboolean x_fill, gboolean y_fill);
+
+#endif /* __NBTK_PRIVATE_H__ */

src/nbtk/nbtk-scroll-bar.h

@@ -0,0 +1,81 @@
+/*
+ * nbtk-scroll-bar.h: Scroll bar actor
+ *
+ * Copyright 2008 OpenedHand
+ * Copyright 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * Boston, MA 02111-1307, USA.
+ *
+ * Written by: Chris Lord <chris@openedhand.com>
+ * Port to Nbtk by: Robert Staudinger <robsta@openedhand.com>
+ *
+ */
+
+#if !defined(NBTK_H_INSIDE) && !defined(NBTK_COMPILATION)
+#error "Only <nbtk/nbtk.h> can be included directly.h"
+#endif
+
+#ifndef __NBTK_SCROLL_BAR_H__
+#define __NBTK_SCROLL_BAR_H__
+
+#include <nbtk/nbtk-adjustment.h>
+#include <nbtk/nbtk-bin.h>
+
+G_BEGIN_DECLS
+
+#define NBTK_TYPE_SCROLL_BAR            (nbtk_scroll_bar_get_type())
+#define NBTK_SCROLL_BAR(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), NBTK_TYPE_SCROLL_BAR, NbtkScrollBar))
+#define NBTK_IS_SCROLL_BAR(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NBTK_TYPE_SCROLL_BAR))
+#define NBTK_SCROLL_BAR_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), NBTK_TYPE_SCROLL_BAR, NbtkScrollBarClass))
+#define NBTK_IS_SCROLL_BAR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), NBTK_TYPE_SCROLL_BAR))
+#define NBTK_SCROLL_BAR_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), NBTK_TYPE_SCROLL_BAR, NbtkScrollBarClass))
+
+typedef struct _NbtkScrollBar          NbtkScrollBar;
+typedef struct _NbtkScrollBarPrivate   NbtkScrollBarPrivate;
+typedef struct _NbtkScrollBarClass     NbtkScrollBarClass;
+
+/**
+ * NbtkScrollBar:
+ *
+ * The contents of this structure are private and should only be accessed
+ * through the public API.
+ */
+struct _NbtkScrollBar
+{
+  /*< private >*/
+  NbtkBin parent_instance;
+
+  NbtkScrollBarPrivate *priv;
+};
+
+struct _NbtkScrollBarClass
+{
+  NbtkBinClass parent_class;
+
+  /* signals */
+  void (*scroll_start) (NbtkScrollBar *bar);
+  void (*scroll_stop)  (NbtkScrollBar *bar);
+};
+
+GType nbtk_scroll_bar_get_type (void) G_GNUC_CONST;
+
+NbtkWidget *    nbtk_scroll_bar_new            (NbtkAdjustment *adjustment);
+void            nbtk_scroll_bar_set_adjustment (NbtkScrollBar  *bar,
+                                                NbtkAdjustment *adjustment);
+NbtkAdjustment *nbtk_scroll_bar_get_adjustment (NbtkScrollBar  *bar);
+
+G_END_DECLS
+
+#endif /* __NBTK_SCROLL_BAR_H__ */

src/nbtk/nbtk-scroll-view.c

@@ -0,0 +1,829 @@
+/*
+ * nbtk-scroll-view.h: Container with scroll-bars
+ *
+ * Copyright 2008 OpenedHand
+ * Copyright 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by: Chris Lord <chris@openedhand.com>
+ * Port to Nbtk by: Robert Staudinger <robsta@openedhand.com>
+ *
+ */
+
+#include "nbtk-scroll-view.h"
+#include "nbtk-marshal.h"
+#include "nbtk-scroll-bar.h"
+#include "nbtk-scrollable.h"
+#include <clutter/clutter.h>
+
+static void clutter_container_iface_init (ClutterContainerIface *iface);
+
+static ClutterContainerIface *nbtk_scroll_view_parent_iface = NULL;
+
+G_DEFINE_TYPE_WITH_CODE (NbtkScrollView, nbtk_scroll_view, NBTK_TYPE_BIN,
+                         G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_CONTAINER,
+                                                clutter_container_iface_init))
+
+#define SCROLL_VIEW_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), \
+                                NBTK_TYPE_SCROLL_VIEW, \
+                                NbtkScrollViewPrivate))
+
+/* Default width (or height - the narrow dimension) for the scrollbars*/
+#define DEFAULT_SCROLLBAR_WIDTH 24
+
+struct _NbtkScrollViewPrivate
+{
+  /* a pointer to the child; this is actually stored
+   * inside NbtkBin:child, but we keep it to avoid
+   * calling nbtk_bin_get_child() every time we need it
+   */
+  ClutterActor   *child;
+
+  ClutterActor   *hscroll;
+  ClutterActor   *vscroll;
+
+  gfloat          row_size;
+  gfloat          column_size;
+
+  gboolean        row_size_set : 1;
+  gboolean        column_size_set : 1;
+  guint           mouse_scroll : 1;
+};
+
+enum {
+  PROP_0,
+
+  PROP_HSCROLL,
+  PROP_VSCROLL,
+  PROP_MOUSE_SCROLL
+};
+
+static void
+nbtk_scroll_view_get_property (GObject *object, guint property_id,
+                                 GValue *value, GParamSpec *pspec)
+{
+  NbtkScrollViewPrivate *priv = ((NbtkScrollView *)object)->priv;
+
+  switch (property_id)
+    {
+    case PROP_HSCROLL :
+      g_value_set_object (value, priv->hscroll);
+      break;
+    case PROP_VSCROLL :
+      g_value_set_object (value, priv->vscroll);
+      break;
+    case PROP_MOUSE_SCROLL:
+      g_value_set_boolean (value, priv->mouse_scroll);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    }
+}
+
+static void
+nbtk_scroll_view_set_property (GObject *object, guint property_id,
+                                 const GValue *value, GParamSpec *pspec)
+{
+  switch (property_id)
+    {
+    case PROP_MOUSE_SCROLL:
+      nbtk_scroll_view_set_mouse_scrolling ((NbtkScrollView *) object,
+                                         g_value_get_boolean (value));
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+    }
+}
+
+static void
+nbtk_scroll_view_dispose (GObject *object)
+{
+  NbtkScrollViewPrivate *priv = NBTK_SCROLL_VIEW (object)->priv;
+
+  priv->child = NULL;
+
+  if (priv->vscroll)
+    {
+      clutter_actor_unparent (priv->vscroll);
+      priv->vscroll = NULL;
+    }
+
+  if (priv->hscroll)
+    {
+      clutter_actor_unparent (priv->hscroll);
+      priv->hscroll = NULL;
+    }
+
+  G_OBJECT_CLASS (nbtk_scroll_view_parent_class)->dispose (object);
+}
+
+static void
+nbtk_scroll_view_finalize (GObject *object)
+{
+  G_OBJECT_CLASS (nbtk_scroll_view_parent_class)->finalize (object);
+}
+
+static void
+nbtk_scroll_view_paint (ClutterActor *actor)
+{
+  NbtkScrollViewPrivate *priv = NBTK_SCROLL_VIEW (actor)->priv;
+
+  /* NbtkBin will paint the child */
+  CLUTTER_ACTOR_CLASS (nbtk_scroll_view_parent_class)->paint (actor);
+
+  /* paint our custom children */
+  if (CLUTTER_ACTOR_IS_VISIBLE (priv->hscroll))
+    clutter_actor_paint (priv->hscroll);
+  if (CLUTTER_ACTOR_IS_VISIBLE (priv->vscroll))
+    clutter_actor_paint (priv->vscroll);
+}
+
+static void
+nbtk_scroll_view_pick (ClutterActor *actor, const ClutterColor *color)
+{
+  NbtkScrollViewPrivate *priv = NBTK_SCROLL_VIEW (actor)->priv;
+
+  /* Chain up so we get a bounding box pained (if we are reactive) */
+  CLUTTER_ACTOR_CLASS (nbtk_scroll_view_parent_class)->pick (actor, color);
+
+  /* paint our custom children */
+  if (CLUTTER_ACTOR_IS_VISIBLE (priv->hscroll))
+    clutter_actor_paint (priv->hscroll);
+  if (CLUTTER_ACTOR_IS_VISIBLE (priv->vscroll))
+    clutter_actor_paint (priv->vscroll);
+}
+
+static double
+get_scrollbar_width (NbtkScrollView *scroll_view)
+{
+  ShellThemeNode *theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (scroll_view));
+  double result = DEFAULT_SCROLLBAR_WIDTH;
+
+  shell_theme_node_get_length (theme_node, "scrollbar-width", FALSE, &result);
+
+  return result;
+}
+
+static double
+get_scrollbar_height (NbtkScrollView *scroll_view)
+{
+  ShellThemeNode *theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (scroll_view));
+  double result = DEFAULT_SCROLLBAR_WIDTH;
+
+  shell_theme_node_get_length (theme_node, "scrollbar-height", FALSE, &result);
+
+  return result;
+}
+
+static void
+nbtk_scroll_view_get_preferred_width (ClutterActor *actor,
+                                      gfloat        for_height,
+                                      gfloat       *min_width_p,
+                                      gfloat       *natural_width_p)
+{
+  NbtkScrollViewPrivate *priv = NBTK_SCROLL_VIEW (actor)->priv;
+  ShellThemeNode *theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (actor));
+
+  if (!priv->child)
+    return;
+
+  shell_theme_node_adjust_for_height (theme_node, &for_height);
+
+  /* Our natural width is the natural width of the child */
+  clutter_actor_get_preferred_width (priv->child,
+                                     for_height,
+                                     NULL,
+                                     natural_width_p);
+
+  /* Add space for the scroll-bar if we can determine it will be necessary */
+  if ((for_height >= 0) && natural_width_p)
+    {
+      gfloat natural_height;
+
+      clutter_actor_get_preferred_height (priv->child, -1.0,
+                                          NULL,
+                                          &natural_height);
+      if (for_height < natural_height)
+        *natural_width_p += get_scrollbar_width (NBTK_SCROLL_VIEW (actor));
+    }
+
+  if (min_width_p)
+    *min_width_p = 0;
+
+  shell_theme_node_adjust_preferred_width (theme_node, min_width_p, natural_width_p);
+}
+
+static void
+nbtk_scroll_view_get_preferred_height (ClutterActor *actor,
+                                       gfloat        for_width,
+                                       gfloat       *min_height_p,
+                                       gfloat       *natural_height_p)
+{
+  NbtkScrollViewPrivate *priv = NBTK_SCROLL_VIEW (actor)->priv;
+  ShellThemeNode *theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (actor));
+
+  if (!priv->child)
+    return;
+
+  shell_theme_node_adjust_for_width (theme_node, &for_width);
+
+  /* Our natural height is the natural height of the child */
+  clutter_actor_get_preferred_height (priv->child,
+                                      for_width,
+                                      NULL,
+                                      natural_height_p);
+
+  /* Add space for the scroll-bar if we can determine it will be necessary */
+  if ((for_width >= 0) && natural_height_p)
+    {
+      gfloat natural_width;
+
+      clutter_actor_get_preferred_width (priv->child, -1.0,
+                                         NULL,
+                                         &natural_width);
+      if (for_width < natural_width)
+        *natural_height_p += get_scrollbar_height (NBTK_SCROLL_VIEW (actor));
+    }
+
+  if (min_height_p)
+    *min_height_p = 0;
+
+  shell_theme_node_adjust_preferred_height (theme_node, min_height_p, natural_height_p);
+}
+
+static void
+nbtk_scroll_view_allocate (ClutterActor          *actor,
+                           const ClutterActorBox *box,
+                           ClutterAllocationFlags flags)
+{
+  ClutterActorBox content_box, child_box;
+  ClutterActorClass *parent_parent_class;
+  gfloat avail_width, avail_height, sb_width, sb_height;
+
+  NbtkScrollViewPrivate *priv = NBTK_SCROLL_VIEW (actor)->priv;
+  ShellThemeNode *theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (actor));
+
+  /* Chain up to the parent's parent class
+   *
+   * We do this because we do not want NbtkBin to allocate the child, as we
+   * give it a different allocation later, depending on whether the scrollbars
+   * are visible
+   */
+  parent_parent_class
+    = g_type_class_peek_parent (nbtk_scroll_view_parent_class);
+
+  CLUTTER_ACTOR_CLASS (parent_parent_class)->
+    allocate (actor, box, flags);
+
+
+  shell_theme_node_get_content_box (theme_node, box, &content_box);
+
+  avail_width = content_box.x2 - content_box.x1;
+  avail_height = content_box.y2 - content_box.y1;
+
+  sb_width = get_scrollbar_width (NBTK_SCROLL_VIEW (actor));
+  sb_height = get_scrollbar_width (NBTK_SCROLL_VIEW (actor));
+
+  if (!CLUTTER_ACTOR_IS_VISIBLE (priv->vscroll))
+    sb_width = 0;
+
+  if (!CLUTTER_ACTOR_IS_VISIBLE (priv->hscroll))
+    sb_height = 0;
+
+  /* Vertical scrollbar */
+  if (CLUTTER_ACTOR_IS_VISIBLE (priv->vscroll))
+    {
+      child_box.x1 = content_box.x2 - sb_width;
+      child_box.y1 = content_box.y1;
+      child_box.x2 = content_box.x2;
+      child_box.y2 = content_box.y2 - sb_height;
+
+      clutter_actor_allocate (priv->vscroll, &child_box, flags);
+    }
+
+  /* Horizontal scrollbar */
+  if (CLUTTER_ACTOR_IS_VISIBLE (priv->hscroll))
+    {
+      child_box.x1 = content_box.x1;
+      child_box.y1 = content_box.y2 - sb_height;
+      child_box.x2 = content_box.x2 - sb_width;
+      child_box.y2 = content_box.y2;
+
+      clutter_actor_allocate (priv->hscroll, &child_box, flags);
+    }
+
+
+  /* Child */
+  child_box.x1 = content_box.x1;
+  child_box.y1 = content_box.y1;
+  child_box.x2 = content_box.x2 - sb_width;
+  child_box.y2 = content_box.y2 - sb_height;
+
+  if (priv->child)
+      clutter_actor_allocate (priv->child, &child_box, flags);
+}
+
+static void
+nbtk_scroll_view_style_changed (NbtkWidget *widget)
+{
+  NbtkScrollViewPrivate *priv = NBTK_SCROLL_VIEW (widget)->priv;
+
+  nbtk_widget_style_changed (NBTK_WIDGET (priv->hscroll));
+  nbtk_widget_style_changed (NBTK_WIDGET (priv->vscroll));
+
+  NBTK_WIDGET_CLASS (nbtk_scroll_view_parent_class)->style_changed (widget);
+}
+
+static gboolean
+nbtk_scroll_view_scroll_event (ClutterActor        *self,
+                               ClutterScrollEvent  *event)
+{
+  NbtkScrollViewPrivate *priv = NBTK_SCROLL_VIEW (self)->priv;
+  gdouble lower, value, upper, step;
+  NbtkAdjustment *vadjustment, *hadjustment;
+
+  /* don't handle scroll events if requested not to */
+  if (!priv->mouse_scroll)
+    return FALSE;
+
+  hadjustment = nbtk_scroll_bar_get_adjustment (NBTK_SCROLL_BAR(priv->hscroll));
+  vadjustment = nbtk_scroll_bar_get_adjustment (NBTK_SCROLL_BAR(priv->vscroll));
+
+  switch (event->direction)
+    {
+      case CLUTTER_SCROLL_UP:
+      case CLUTTER_SCROLL_DOWN:
+        if (vadjustment)
+          g_object_get (vadjustment,
+                        "lower", &lower,
+                        "step-increment", &step,
+                        "value", &value,
+                        "upper", &upper,
+                        NULL);
+        else
+          return FALSE;
+        break;
+      case CLUTTER_SCROLL_LEFT:
+      case CLUTTER_SCROLL_RIGHT:
+        if (vadjustment)
+          g_object_get (hadjustment,
+                        "lower", &lower,
+                        "step-increment", &step,
+                        "value", &value,
+                        "upper", &upper,
+                        NULL);
+          else
+            return FALSE;
+        break;
+    }
+
+  switch (event->direction)
+    {
+      case CLUTTER_SCROLL_UP:
+        if (value == lower)
+          return FALSE;
+        else
+          nbtk_adjustment_set_value (vadjustment, value - step);
+        break;
+      case CLUTTER_SCROLL_DOWN:
+        if (value == upper)
+          return FALSE;
+        else
+          nbtk_adjustment_set_value (vadjustment, value + step);
+        break;
+      case CLUTTER_SCROLL_LEFT:
+        if (value == lower)
+          return FALSE;
+        else
+          nbtk_adjustment_set_value (hadjustment, value - step);
+        break;
+      case CLUTTER_SCROLL_RIGHT:
+        if (value == upper)
+          return FALSE;
+        else
+          nbtk_adjustment_set_value (hadjustment, value + step);
+        break;
+    }
+
+  return TRUE;
+}
+
+static void
+nbtk_scroll_view_class_init (NbtkScrollViewClass *klass)
+{
+  GParamSpec *pspec;
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
+  NbtkWidgetClass *widget_class = NBTK_WIDGET_CLASS (klass);
+
+  g_type_class_add_private (klass, sizeof (NbtkScrollViewPrivate));
+
+  object_class->get_property = nbtk_scroll_view_get_property;
+  object_class->set_property = nbtk_scroll_view_set_property;
+  object_class->dispose= nbtk_scroll_view_dispose;
+  object_class->finalize = nbtk_scroll_view_finalize;
+
+  actor_class->paint = nbtk_scroll_view_paint;
+  actor_class->pick = nbtk_scroll_view_pick;
+  actor_class->get_preferred_width = nbtk_scroll_view_get_preferred_width;
+  actor_class->get_preferred_height = nbtk_scroll_view_get_preferred_height;
+  actor_class->allocate = nbtk_scroll_view_allocate;
+  actor_class->scroll_event = nbtk_scroll_view_scroll_event;
+
+  widget_class->style_changed = nbtk_scroll_view_style_changed;
+
+  g_object_class_install_property (object_class,
+                                   PROP_HSCROLL,
+                                   g_param_spec_object ("hscroll",
+                                                        "NbtkScrollBar",
+                                                        "Horizontal scroll indicator",
+                                                        NBTK_TYPE_SCROLL_BAR,
+                                                        G_PARAM_READABLE));
+
+  g_object_class_install_property (object_class,
+                                   PROP_VSCROLL,
+                                   g_param_spec_object ("vscroll",
+                                                       "NbtkScrollBar",
+                                                       "Vertical scroll indicator",
+                                                       NBTK_TYPE_SCROLL_BAR,
+                                                       G_PARAM_READABLE));
+
+  pspec = g_param_spec_boolean ("enable-mouse-scrolling",
+                                "Enable Mouse Scrolling",
+                                "Enable automatic mouse wheel scrolling",
+                                TRUE,
+                                G_PARAM_READWRITE);
+  g_object_class_install_property (object_class,
+                                   PROP_MOUSE_SCROLL,
+                                   pspec);
+
+}
+
+static void
+child_adjustment_changed_cb (NbtkAdjustment *adjustment,
+                             ClutterActor   *bar)
+{
+  NbtkScrollView *scroll;
+  gdouble lower, upper, page_size;
+
+  scroll = NBTK_SCROLL_VIEW (clutter_actor_get_parent (bar));
+
+  /* Determine if this scroll-bar should be visible */
+  nbtk_adjustment_get_values (adjustment, NULL,
+                              &lower, &upper,
+                              NULL, NULL,
+                              &page_size);
+
+  if ((upper - lower) > page_size)
+    clutter_actor_show (bar);
+  else
+    clutter_actor_hide (bar);
+
+  /* Request a resize */
+  clutter_actor_queue_relayout (CLUTTER_ACTOR (scroll));
+}
+
+static void
+child_hadjustment_notify_cb (GObject *gobject,
+                             GParamSpec *arg1,
+                             gpointer user_data)
+{
+  NbtkAdjustment *hadjust;
+
+  ClutterActor *actor = CLUTTER_ACTOR (gobject);
+  NbtkScrollViewPrivate *priv = NBTK_SCROLL_VIEW (user_data)->priv;
+
+  hadjust = nbtk_scroll_bar_get_adjustment (NBTK_SCROLL_BAR(priv->hscroll));
+  if (hadjust)
+    g_signal_handlers_disconnect_by_func (hadjust,
+                                          child_adjustment_changed_cb,
+                                          priv->hscroll);
+
+  nbtk_scrollable_get_adjustments (NBTK_SCROLLABLE (actor), &hadjust, NULL);
+  if (hadjust)
+    {
+      /* Force scroll step if neede. */
+      if (priv->column_size_set)
+        {
+          g_object_set (hadjust,
+                        "step-increment", priv->column_size,
+                        NULL);
+        }
+
+      nbtk_scroll_bar_set_adjustment (NBTK_SCROLL_BAR(priv->hscroll), hadjust);
+      g_signal_connect (hadjust, "changed", G_CALLBACK (
+                        child_adjustment_changed_cb), priv->hscroll);
+      child_adjustment_changed_cb (hadjust, priv->hscroll);
+    }
+}
+
+static void
+child_vadjustment_notify_cb (GObject *gobject,
+                             GParamSpec *arg1,
+                             gpointer user_data)
+{
+  NbtkAdjustment *vadjust;
+
+  ClutterActor *actor = CLUTTER_ACTOR (gobject);
+  NbtkScrollViewPrivate *priv = NBTK_SCROLL_VIEW (user_data)->priv;
+
+  vadjust = nbtk_scroll_bar_get_adjustment (NBTK_SCROLL_BAR(priv->vscroll));
+  if (vadjust)
+    g_signal_handlers_disconnect_by_func (vadjust,
+                                          child_adjustment_changed_cb,
+                                          priv->vscroll);
+
+  nbtk_scrollable_get_adjustments (NBTK_SCROLLABLE(actor), NULL, &vadjust);
+  if (vadjust)
+    {
+      /* Force scroll step if neede. */
+      if (priv->row_size_set)
+        {
+          g_object_set (vadjust,
+                        "step-increment", priv->row_size,
+                        NULL);
+        }
+
+      nbtk_scroll_bar_set_adjustment (NBTK_SCROLL_BAR(priv->vscroll), vadjust);
+      g_signal_connect (vadjust, "changed", G_CALLBACK (
+                        child_adjustment_changed_cb), priv->vscroll);
+      child_adjustment_changed_cb (vadjust, priv->vscroll);
+    }
+}
+
+static void
+nbtk_scroll_view_init (NbtkScrollView *self)
+{
+  NbtkScrollViewPrivate *priv = self->priv = SCROLL_VIEW_PRIVATE (self);
+
+  priv->hscroll = CLUTTER_ACTOR (nbtk_scroll_bar_new (NULL));
+  priv->vscroll = g_object_new (NBTK_TYPE_SCROLL_BAR, "vertical", TRUE, NULL);
+
+  clutter_actor_set_parent (priv->hscroll, CLUTTER_ACTOR (self));
+  clutter_actor_set_parent (priv->vscroll, CLUTTER_ACTOR (self));
+
+  /* mouse scroll is enabled by default, so we also need to be reactive */
+  priv->mouse_scroll = TRUE;
+  g_object_set (G_OBJECT (self), "reactive", TRUE, NULL);
+}
+
+static void
+nbtk_scroll_view_add (ClutterContainer *container,
+                      ClutterActor     *actor)
+{
+  NbtkScrollView *self = NBTK_SCROLL_VIEW (container);
+  NbtkScrollViewPrivate *priv = self->priv;
+
+  if (NBTK_IS_SCROLLABLE (actor))
+    {
+      priv->child = actor;
+
+      /* chain up to NbtkBin::add() */
+      nbtk_scroll_view_parent_iface->add (container, actor);
+
+      /* Get adjustments for scroll-bars */
+      g_signal_connect (actor, "notify::hadjustment",
+                        G_CALLBACK (child_hadjustment_notify_cb),
+                        container);
+      g_signal_connect (actor, "notify::vadjustment",
+                        G_CALLBACK (child_vadjustment_notify_cb),
+                        container);
+      child_hadjustment_notify_cb (G_OBJECT (actor), NULL, container);
+      child_vadjustment_notify_cb (G_OBJECT (actor), NULL, container);
+    }
+  else
+    {
+      g_warning ("Attempting to add an actor of type %s to "
+                 "a NbtkScrollView, but the actor does "
+                 "not implement NbtkScrollable.",
+                 g_type_name (G_OBJECT_TYPE (actor)));
+    }
+}
+
+static void
+nbtk_scroll_view_remove (ClutterContainer *container,
+                         ClutterActor     *actor)
+{
+  NbtkScrollViewPrivate *priv = NBTK_SCROLL_VIEW (container)->priv;
+
+  if (actor == priv->child)
+    {
+      g_object_ref (priv->child);
+
+      /* chain up to NbtkBin::remove() */
+      nbtk_scroll_view_parent_iface->remove (container, actor);
+
+      g_signal_handlers_disconnect_by_func (priv->child,
+                                            child_hadjustment_notify_cb,
+                                            container);
+      g_signal_handlers_disconnect_by_func (priv->child,
+                                            child_vadjustment_notify_cb,
+                                            container);
+      nbtk_scrollable_set_adjustments ((NbtkScrollable*) priv->child, NULL, NULL);
+
+      g_object_unref (priv->child);
+      priv->child = NULL;
+    }
+}
+
+static void
+nbtk_scroll_view_foreach_with_internals (ClutterContainer *container,
+                                         ClutterCallback   callback,
+                                         gpointer          user_data)
+{
+  NbtkScrollViewPrivate *priv = NBTK_SCROLL_VIEW (container)->priv;
+
+  if (priv->child != NULL)
+    callback (priv->child, user_data);
+
+  if (priv->hscroll != NULL)
+    callback (priv->hscroll, user_data);
+
+  if (priv->vscroll != NULL)
+    callback (priv->vscroll, user_data);
+}
+
+static void
+clutter_container_iface_init (ClutterContainerIface *iface)
+{
+  /* store a pointer to the NbtkBin implementation of
+   * ClutterContainer so that we can chain up when
+   * overriding the methods
+   */
+  nbtk_scroll_view_parent_iface = g_type_interface_peek_parent (iface);
+
+  iface->add = nbtk_scroll_view_add;
+  iface->remove = nbtk_scroll_view_remove;
+  iface->foreach_with_internals = nbtk_scroll_view_foreach_with_internals;
+}
+
+NbtkWidget *
+nbtk_scroll_view_new (void)
+{
+  return g_object_new (NBTK_TYPE_SCROLL_VIEW, NULL);
+}
+
+/**
+ * nbtk_scroll_view_get_hscroll_bar:
+ * @scroll: a #NbtkScrollView
+ *
+ * Gets the horizontal scrollbar of the scrollbiew
+ *
+ * Return value: (transfer none): the horizontal #NbtkScrollbar
+ */
+ClutterActor *
+nbtk_scroll_view_get_hscroll_bar (NbtkScrollView *scroll)
+{
+  g_return_val_if_fail (NBTK_IS_SCROLL_VIEW (scroll), NULL);
+
+  return scroll->priv->hscroll;
+}
+
+/**
+ * nbtk_scroll_view_get_vscroll_bar:
+ * @scroll: a #NbtkScrollView
+ *
+ * Gets the vertical scrollbar of the scrollbiew
+ *
+ * Return value: (transfer none): the vertical #NbtkScrollbar
+ */
+ClutterActor *
+nbtk_scroll_view_get_vscroll_bar (NbtkScrollView *scroll)
+{
+  g_return_val_if_fail (NBTK_IS_SCROLL_VIEW (scroll), NULL);
+
+  return scroll->priv->vscroll;
+}
+
+gfloat
+nbtk_scroll_view_get_column_size (NbtkScrollView *scroll)
+{
+  NbtkAdjustment  *adjustment;
+  gdouble          column_size;
+
+  g_return_val_if_fail (scroll, 0);
+
+  adjustment = nbtk_scroll_bar_get_adjustment (
+                NBTK_SCROLL_BAR (scroll->priv->hscroll));
+  g_object_get (adjustment,
+                "step-increment", &column_size,
+                NULL);
+
+  return column_size;
+}
+
+void
+nbtk_scroll_view_set_column_size (NbtkScrollView *scroll,
+                                  gfloat          column_size)
+{
+  NbtkAdjustment  *adjustment;
+
+  g_return_if_fail (scroll);
+
+  if (column_size < 0)
+    {
+      scroll->priv->column_size_set = FALSE;
+      scroll->priv->column_size = -1;
+    }
+  else
+    {
+      scroll->priv->column_size_set = TRUE;
+      scroll->priv->column_size = column_size;
+
+      adjustment = nbtk_scroll_bar_get_adjustment (
+                    NBTK_SCROLL_BAR (scroll->priv->hscroll));
+
+      if (adjustment)
+        g_object_set (adjustment,
+                      "step-increment", (gdouble) scroll->priv->column_size,
+                      NULL);
+     }
+}
+
+gfloat
+nbtk_scroll_view_get_row_size (NbtkScrollView *scroll)
+{
+  NbtkAdjustment  *adjustment;
+  gdouble row_size;
+
+  g_return_val_if_fail (scroll, 0);
+
+  adjustment = nbtk_scroll_bar_get_adjustment (
+                NBTK_SCROLL_BAR (scroll->priv->vscroll));
+  g_object_get (adjustment,
+                "step-increment", &row_size,
+                NULL);
+
+  return row_size;
+}
+
+void
+nbtk_scroll_view_set_row_size (NbtkScrollView *scroll,
+                               gfloat          row_size)
+{
+  NbtkAdjustment  *adjustment;
+
+  g_return_if_fail (scroll);
+
+  if (row_size < 0)
+    {
+      scroll->priv->row_size_set = FALSE;
+      scroll->priv->row_size = -1;
+    }
+  else
+    {
+      scroll->priv->row_size_set = TRUE;
+      scroll->priv->row_size = row_size;
+
+      adjustment = nbtk_scroll_bar_get_adjustment (
+                    NBTK_SCROLL_BAR (scroll->priv->vscroll));
+
+      if (adjustment)
+        g_object_set (adjustment,
+                      "step-increment", (gdouble) scroll->priv->row_size,
+                      NULL);
+    }
+}
+
+void
+nbtk_scroll_view_set_mouse_scrolling (NbtkScrollView *scroll,
+                                      gboolean        enabled)
+{
+  NbtkScrollViewPrivate *priv;
+
+  g_return_if_fail (NBTK_IS_SCROLL_VIEW (scroll));
+
+  priv = NBTK_SCROLL_VIEW (scroll)->priv;
+
+  if (priv->mouse_scroll != enabled)
+    {
+      priv->mouse_scroll = enabled;
+
+      /* make sure we can receive mouse wheel events */
+      if (enabled)
+        clutter_actor_set_reactive ((ClutterActor *) scroll, TRUE);
+    }
+}
+
+gboolean
+nbtk_scroll_view_get_mouse_scrolling (NbtkScrollView *scroll)
+{
+  NbtkScrollViewPrivate *priv;
+
+  g_return_val_if_fail (NBTK_IS_SCROLL_VIEW (scroll), FALSE);
+
+  priv = NBTK_SCROLL_VIEW (scroll)->priv;
+
+  return priv->mouse_scroll;
+}

src/nbtk/nbtk-scroll-view.h

@@ -0,0 +1,87 @@
+/*
+ * nbtk-scroll-view.h: Container with scroll-bars
+ *
+ * Copyright 2008 OpenedHand
+ * Copyright 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * Boston, MA 02111-1307, USA.
+ *
+ * Written by: Chris Lord <chris@openedhand.com>
+ * Port to Nbtk by: Robert Staudinger <robsta@openedhand.com>
+ *
+ */
+
+#if !defined(NBTK_H_INSIDE) && !defined(NBTK_COMPILATION)
+#error "Only <nbtk/nbtk.h> can be included directly.h"
+#endif
+
+#ifndef __NBTK_SCROLL_VIEW_H__
+#define __NBTK_SCROLL_VIEW_H__
+
+#include <nbtk/nbtk-bin.h>
+
+G_BEGIN_DECLS
+
+#define NBTK_TYPE_SCROLL_VIEW            (nbtk_scroll_view_get_type())
+#define NBTK_SCROLL_VIEW(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), NBTK_TYPE_SCROLL_VIEW, NbtkScrollView))
+#define NBTK_IS_SCROLL_VIEW(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NBTK_TYPE_SCROLL_VIEW))
+#define NBTK_SCROLL_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), NBTK_TYPE_SCROLL_VIEW, NbtkScrollViewClass))
+#define NBTK_IS_SCROLL_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), NBTK_TYPE_SCROLL_VIEW))
+#define NBTK_SCROLL_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), NBTK_TYPE_SCROLL_VIEW, NbtkScrollViewClass))
+
+typedef struct _NbtkScrollView          NbtkScrollView;
+typedef struct _NbtkScrollViewPrivate   NbtkScrollViewPrivate;
+typedef struct _NbtkScrollViewClass     NbtkScrollViewClass;
+
+/**
+ * NbtkScrollView:
+ *
+ * The contents of this structure are private and should only be accessed
+ * through the public API.
+ */
+struct _NbtkScrollView
+{
+  /*< private >*/
+  NbtkBin parent_instance;
+
+  NbtkScrollViewPrivate *priv;
+};
+
+struct _NbtkScrollViewClass
+{
+  NbtkBinClass parent_class;
+};
+
+GType nbtk_scroll_view_get_type (void) G_GNUC_CONST;
+
+NbtkWidget *  nbtk_scroll_view_new             (void);
+
+ClutterActor *  nbtk_scroll_view_get_hscroll_bar (NbtkScrollView *scroll);
+ClutterActor *  nbtk_scroll_view_get_vscroll_bar (NbtkScrollView *scroll);
+
+gfloat     nbtk_scroll_view_get_column_size (NbtkScrollView *scroll);
+void            nbtk_scroll_view_set_column_size (NbtkScrollView *scroll,
+                                                  gfloat          column_size);
+
+gfloat     nbtk_scroll_view_get_row_size    (NbtkScrollView *scroll);
+void            nbtk_scroll_view_set_row_size    (NbtkScrollView *scroll,
+                                                  gfloat          row_size);
+
+void nbtk_scroll_view_set_mouse_scrolling (NbtkScrollView *scroll, gboolean enabled);
+gboolean nbtk_scroll_view_get_mouse_scrolling (NbtkScrollView *scroll);
+
+G_END_DECLS
+
+#endif /* __NBTK_SCROLL_VIEW_H__ */

src/nbtk/nbtk-scrollable.c

@@ -0,0 +1,96 @@
+/*
+ * nbtk-scrollable.c: Scrollable interface
+ *
+ * Copyright 2008 OpenedHand
+ * Copyright 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by: Chris Lord <chris@openedhand.com>
+ * Port to Nbtk by: Robert Staudinger <robsta@openedhand.com>
+ *
+ */
+
+#include "nbtk-scrollable.h"
+
+static void
+nbtk_scrollable_base_init (gpointer g_iface)
+{
+  static gboolean initialized = FALSE;
+
+  if (!initialized)
+    {
+      g_object_interface_install_property (g_iface,
+                                   g_param_spec_object ("hadjustment",
+                                                        "NbtkAdjustment",
+                                                        "Horizontal adjustment",
+                                                        NBTK_TYPE_ADJUSTMENT,
+                                                        G_PARAM_READWRITE));
+
+      g_object_interface_install_property (g_iface,
+                                   g_param_spec_object ("vadjustment",
+                                                        "NbtkAdjustment",
+                                                        "Vertical adjustment",
+                                                        NBTK_TYPE_ADJUSTMENT,
+                                                        G_PARAM_READWRITE));
+
+      initialized = TRUE;
+    }
+}
+
+GType
+nbtk_scrollable_get_type (void)
+{
+  static GType type = 0;
+  if (type == 0)
+    {
+      static const GTypeInfo info =
+        {
+          sizeof (NbtkScrollableInterface),
+          nbtk_scrollable_base_init,        /* base_init */
+          NULL,
+        };
+      type = g_type_register_static (G_TYPE_INTERFACE,
+                                     "NbtkScrollable", &info, 0);
+    }
+  return type;
+}
+
+void
+nbtk_scrollable_set_adjustments (NbtkScrollable *scrollable,
+                                 NbtkAdjustment *hadjustment,
+                                 NbtkAdjustment *vadjustment)
+{
+  NBTK_SCROLLABLE_GET_INTERFACE (scrollable)->set_adjustments (scrollable,
+                                                               hadjustment,
+                                                               vadjustment);
+}
+
+/**
+ * nbtk_scroll_bar_get_adjustments:
+ * @hadjustment: (transfer none) (out) (allow-none): location to store the horizontal adjustment, or %NULL
+ * @vadjustment: (transfer none) (out) (allow-none): location to store the vertical adjustment, or %NULL
+ *
+ * Gets the adjustment objects that store the offsets of the scrollable widget
+ * into its possible scrolling area.
+ */
+void
+nbtk_scrollable_get_adjustments (NbtkScrollable *scrollable,
+                                 NbtkAdjustment **hadjustment,
+                                 NbtkAdjustment **vadjustment)
+{
+  NBTK_SCROLLABLE_GET_INTERFACE (scrollable)->get_adjustments (scrollable,
+                                                               hadjustment,
+                                                               vadjustment);
+}

src/nbtk/nbtk-scrollable.h

@@ -0,0 +1,69 @@
+/*
+ * nbtk-scrollable.h: Scrollable interface
+ *
+ * Copyright 2008 OpenedHand
+ * Copyright 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * Boston, MA 02111-1307, USA.
+ *
+ * Written by: Chris Lord <chris@openedhand.com>
+ * Port to Nbtk by: Robert Staudinger <robsta@openedhand.com>
+ *
+ */
+
+#if !defined(NBTK_H_INSIDE) && !defined(NBTK_COMPILATION)
+#error "Only <nbtk/nbtk.h> can be included directly.h"
+#endif
+
+#ifndef __NBTK_SCROLLABLE_H__
+#define __NBTK_SCROLLABLE_H__
+
+#include <glib-object.h>
+#include <nbtk/nbtk-adjustment.h>
+
+G_BEGIN_DECLS
+
+#define NBTK_TYPE_SCROLLABLE                (nbtk_scrollable_get_type ())
+#define NBTK_SCROLLABLE(obj)                (G_TYPE_CHECK_INSTANCE_CAST ((obj), NBTK_TYPE_SCROLLABLE, NbtkScrollable))
+#define NBTK_IS_SCROLLABLE(obj)             (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NBTK_TYPE_SCROLLABLE))
+#define NBTK_SCROLLABLE_GET_INTERFACE(inst) (G_TYPE_INSTANCE_GET_INTERFACE ((inst), NBTK_TYPE_SCROLLABLE, NbtkScrollableInterface))
+
+typedef struct _NbtkScrollable NbtkScrollable; /* Dummy object */
+typedef struct _NbtkScrollableInterface NbtkScrollableInterface;
+
+struct _NbtkScrollableInterface
+{
+  GTypeInterface parent;
+
+  void (* set_adjustments) (NbtkScrollable  *scrollable,
+                            NbtkAdjustment  *hadjustment,
+                            NbtkAdjustment  *vadjustment);
+  void (* get_adjustments) (NbtkScrollable  *scrollable,
+                            NbtkAdjustment **hadjustment,
+                            NbtkAdjustment **vadjustment);
+};
+
+GType nbtk_scrollable_get_type (void) G_GNUC_CONST;
+
+void nbtk_scrollable_set_adjustments (NbtkScrollable  *scrollable,
+                                      NbtkAdjustment  *hadjustment,
+                                      NbtkAdjustment  *vadjustment);
+void nbtk_scrollable_get_adjustments (NbtkScrollable  *scrollable,
+                                      NbtkAdjustment **hadjustment,
+                                      NbtkAdjustment **vadjustment);
+
+G_END_DECLS
+
+#endif /* __NBTK_SCROLLABLE_H__ */

src/nbtk/nbtk-subtexture.c

@@ -0,0 +1,575 @@
+/*
+ * nbtk-subtexture.h: Class to wrap a texture and "subframe" it.
+ * based on
+ * nbtk-texture-frame.c: Expandible texture actor
+ *
+ * Copyright 2007 OpenedHand
+ * Copyright 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <cogl/cogl.h>
+#include <clutter/clutter.h>
+
+#include "nbtk-subtexture.h"
+
+enum
+{
+  PROP_0,
+
+  PROP_PARENT_TEXTURE,
+
+  PROP_TOP,
+  PROP_LEFT,
+  PROP_WIDTH,
+  PROP_HEIGHT
+};
+
+G_DEFINE_TYPE (NbtkSubtexture, nbtk_subtexture, CLUTTER_TYPE_ACTOR);
+
+#define NBTK_SUBTEXTURE_GET_PRIVATE(obj)     (G_TYPE_INSTANCE_GET_PRIVATE ((obj), NBTK_TYPE_SUBTEXTURE, NbtkSubtexturePrivate))
+
+struct _NbtkSubtexturePrivate
+{
+  ClutterTexture *parent_texture;
+
+  int left;
+  int top;
+  int width;
+  int height;
+
+  CoglHandle material;
+};
+
+static void
+nbtk_subtexture_get_preferred_width (ClutterActor *self,
+                                        gfloat   for_height,
+                                        gfloat  *min_width_p,
+                                        gfloat  *natural_width_p)
+{
+  NbtkSubtexturePrivate *priv = NBTK_SUBTEXTURE (self)->priv;
+
+  if (G_UNLIKELY (priv->parent_texture == NULL))
+    {
+      if (min_width_p)
+        *min_width_p = 0;
+
+      if (natural_width_p)
+        *natural_width_p = 0;
+    }
+  else
+    {
+	if (min_width_p)
+		*min_width_p = priv->width;
+	if (natural_width_p)
+		*natural_width_p = priv->width;
+    }
+}
+
+static void
+nbtk_subtexture_get_preferred_height (ClutterActor *self,
+                                         gfloat   for_width,
+                                         gfloat  *min_height_p,
+                                         gfloat  *natural_height_p)
+{
+  NbtkSubtexturePrivate *priv = NBTK_SUBTEXTURE (self)->priv;
+
+  if (G_UNLIKELY (priv->parent_texture == NULL))
+    {
+      if (min_height_p)
+        *min_height_p = 0;
+
+      if (natural_height_p)
+        *natural_height_p = 0;
+    }
+  else
+    {
+	if (min_height_p)
+		*min_height_p = priv->height;
+	if (natural_height_p)
+		*natural_height_p = priv->height;
+    }
+}
+
+static void
+nbtk_subtexture_realize (ClutterActor *self)
+{
+  NbtkSubtexturePrivate *priv = NBTK_SUBTEXTURE (self)->priv;
+
+  if (priv->material != COGL_INVALID_HANDLE)
+    return;
+
+  priv->material = cogl_material_new ();
+
+  CLUTTER_ACTOR_SET_FLAGS (self, CLUTTER_ACTOR_REALIZED);
+}
+
+static void
+nbtk_subtexture_unrealize (ClutterActor *self)
+{
+  NbtkSubtexturePrivate *priv = NBTK_SUBTEXTURE (self)->priv;
+
+  if (priv->material == COGL_INVALID_HANDLE)
+    return;
+
+  cogl_material_unref (priv->material);
+  priv->material = COGL_INVALID_HANDLE;
+
+  CLUTTER_ACTOR_UNSET_FLAGS (self, CLUTTER_ACTOR_REALIZED);
+}
+
+static void
+nbtk_subtexture_paint (ClutterActor *self)
+{
+  NbtkSubtexturePrivate *priv = NBTK_SUBTEXTURE (self)->priv;
+  CoglHandle cogl_texture = COGL_INVALID_HANDLE;
+  ClutterActorBox box = { 0, 0, 0, 0 };
+  gfloat tx1, ty1, tx2, ty2, tex_width, tex_height, width, height;
+  guint8 opacity;
+
+  /* no need to paint stuff if we don't have a texture */
+  if (G_UNLIKELY (priv->parent_texture == NULL))
+    return;
+
+  /* parent texture may have been hidden, so need to make sure it gets
+   * realized
+   */
+  if (!CLUTTER_ACTOR_IS_REALIZED (priv->parent_texture))
+    clutter_actor_realize (CLUTTER_ACTOR (priv->parent_texture));
+
+  cogl_texture = clutter_texture_get_cogl_texture (priv->parent_texture);
+  if (cogl_texture == COGL_INVALID_HANDLE)
+    return;
+
+  tex_width  = cogl_texture_get_width (cogl_texture);
+  tex_height = cogl_texture_get_height (cogl_texture);
+
+  clutter_actor_get_allocation_box (self, &box);
+
+  width = box.x2 - box.x1;
+  height = box.y2 - box.y1;
+
+  tx1 = 1.0 *  priv->left / tex_width;
+  ty1 = 1.0 * priv->top / tex_height;
+
+  tx2 = 1.0 * (priv->left + priv->width) / tex_width;
+  ty2 = 1.0 * (priv->top + priv->height) / tex_height;
+
+
+  opacity = clutter_actor_get_paint_opacity (self);
+
+  g_assert (priv->material != COGL_INVALID_HANDLE);
+
+  /* set the source material using the parent texture's COGL handle */
+  cogl_material_set_color4ub (priv->material, 255, 255, 255, opacity);
+  cogl_material_set_layer (priv->material, 0, cogl_texture);
+  cogl_set_source (priv->material);
+
+  cogl_rectangle_with_texture_coords (0,0, (float)width, (float)height,
+		tx1, ty1, tx2, ty2);
+}
+
+static inline void
+nbtk_subtexture_set_frame_internal (NbtkSubtexture *frame,
+                                       int            left,
+                                       int            top,
+                                       int            width,
+                                       int            height)
+{
+  NbtkSubtexturePrivate *priv = frame->priv;
+  GObject *gobject = G_OBJECT (frame);
+  gboolean changed = FALSE;
+
+  g_object_freeze_notify (gobject);
+
+  if (priv->top != top)
+    {
+      priv->top = top;
+      g_object_notify (gobject, "top");
+      changed = TRUE;
+    }
+
+  if (priv->left != left)
+    {
+      priv->left = left;
+      g_object_notify (gobject, "left");
+      changed = TRUE;
+    }
+
+  if (priv->width != width)
+    {
+      priv->width = width;
+      g_object_notify (gobject, "width");
+      changed = TRUE;
+    }
+
+  if (priv->height != height)
+    {
+      priv->height = height;
+      g_object_notify (gobject, "height");
+      changed = TRUE;
+    }
+
+  if (changed && CLUTTER_ACTOR_IS_VISIBLE (frame))
+    clutter_actor_queue_redraw (CLUTTER_ACTOR (frame));
+
+  g_object_thaw_notify (gobject);
+}
+
+static void
+nbtk_subtexture_set_property (GObject      *gobject,
+                                 guint         prop_id,
+                                 const GValue *value,
+                                 GParamSpec   *pspec)
+{
+  NbtkSubtexture *frame = NBTK_SUBTEXTURE (gobject);
+  NbtkSubtexturePrivate *priv = frame->priv;
+
+  switch (prop_id)
+    {
+    case PROP_PARENT_TEXTURE:
+      nbtk_subtexture_set_parent_texture (frame,
+                                             g_value_get_object (value));
+      break;
+
+    case PROP_TOP:
+      nbtk_subtexture_set_frame_internal (frame,
+                                             priv->left,
+                                             g_value_get_int (value),
+                                             priv->width,
+                                             priv->height);
+      break;
+
+    case PROP_LEFT:
+      nbtk_subtexture_set_frame_internal (frame,
+                                             g_value_get_int (value),
+                                             priv->top,
+                                             priv->width,
+                                             priv->height);
+      break;
+
+    case PROP_WIDTH:
+      nbtk_subtexture_set_frame_internal (frame,
+                                             priv->left,
+                                             priv->top,
+                                             g_value_get_int (value),
+                                             priv->height);
+      break;
+
+    case PROP_HEIGHT:
+      nbtk_subtexture_set_frame_internal (frame,
+                                             priv->left,
+                                             priv->top,
+                                             priv->width,
+                                             g_value_get_int (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+nbtk_subtexture_get_property (GObject    *gobject,
+                                 guint       prop_id,
+                                 GValue     *value,
+                                 GParamSpec *pspec)
+{
+  NbtkSubtexturePrivate *priv = NBTK_SUBTEXTURE (gobject)->priv;
+
+  switch (prop_id)
+    {
+    case PROP_PARENT_TEXTURE:
+      g_value_set_object (value, priv->parent_texture);
+      break;
+
+    case PROP_LEFT:
+      g_value_set_int (value, priv->left);
+      break;
+
+    case PROP_TOP:
+      g_value_set_int (value, priv->top);
+      break;
+
+    case PROP_WIDTH:
+      g_value_set_int (value, priv->width);
+      break;
+
+    case PROP_HEIGHT:
+      g_value_set_int (value, priv->height);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+nbtk_subtexture_dispose (GObject *gobject)
+{
+  NbtkSubtexturePrivate *priv = NBTK_SUBTEXTURE (gobject)->priv;
+
+  if (priv->parent_texture)
+    {
+      g_object_unref (priv->parent_texture);
+      priv->parent_texture = NULL;
+    }
+
+  if (priv->material)
+    {
+      cogl_material_unref (priv->material);
+      priv->material = COGL_INVALID_HANDLE;
+    }
+
+  G_OBJECT_CLASS (nbtk_subtexture_parent_class)->dispose (gobject);
+}
+
+static void
+nbtk_subtexture_class_init (NbtkSubtextureClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
+  GParamSpec *pspec;
+
+  g_type_class_add_private (gobject_class, sizeof (NbtkSubtexturePrivate));
+
+  actor_class->get_preferred_width =
+    nbtk_subtexture_get_preferred_width;
+  actor_class->get_preferred_height =
+    nbtk_subtexture_get_preferred_height;
+  actor_class->realize = nbtk_subtexture_realize;
+  actor_class->unrealize = nbtk_subtexture_unrealize;
+  actor_class->paint = nbtk_subtexture_paint;
+
+  gobject_class->set_property = nbtk_subtexture_set_property;
+  gobject_class->get_property = nbtk_subtexture_get_property;
+  gobject_class->dispose = nbtk_subtexture_dispose;
+
+  pspec = g_param_spec_object ("parent-texture",
+                               "Parent Texture",
+                               "The parent ClutterTexture",
+                               CLUTTER_TYPE_TEXTURE,
+                               G_PARAM_READWRITE |
+                               G_PARAM_CONSTRUCT);
+  g_object_class_install_property (gobject_class, PROP_PARENT_TEXTURE, pspec);
+
+  pspec = g_param_spec_int ("left",
+                              "Left",
+                              "Left offset",
+			      0, G_MAXINT,
+                              0,
+                              G_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_LEFT, pspec);
+
+  pspec = g_param_spec_int ("top",
+                              "Top",
+                              "Top offset",
+                              0, G_MAXINT,
+                              0,
+                              G_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_TOP, pspec);
+
+  pspec = g_param_spec_int ("width",
+                              "Width",
+                              "Width",
+                              0, G_MAXINT,
+                              0,
+                              G_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_WIDTH, pspec);
+
+  pspec = g_param_spec_int ("height",
+                              "Height",
+                              "Height",
+                              0, G_MAXINT,
+                              0,
+                              G_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_HEIGHT, pspec);
+}
+
+static void
+nbtk_subtexture_init (NbtkSubtexture *self)
+{
+  NbtkSubtexturePrivate *priv;
+
+  self->priv = priv = NBTK_SUBTEXTURE_GET_PRIVATE (self);
+
+  priv->material = COGL_INVALID_HANDLE;
+}
+
+/**
+ * nbtk_subtexture_new:
+ * @texture: a #ClutterTexture or %NULL
+ * @left: left
+ * @top: top
+ * @width: width
+ * @height: height
+ *
+ * A #NbtkSubtexture is a specialized texture that efficiently clones
+ * an area of the given @texture while keeping preserving portions of the
+ * same texture.
+ *
+ * A #NbtkSubtexture can be used to make a rectangular texture fit a
+ * given size without stretching its borders.
+ *
+ * Return value: the newly created #NbtkSubtexture
+ */
+ClutterActor*
+nbtk_subtexture_new (ClutterTexture *texture,
+			gint          left,
+			gint          top,
+			gint          width,
+			gint          height)
+{
+  g_return_val_if_fail (texture == NULL || CLUTTER_IS_TEXTURE (texture), NULL);
+
+  return g_object_new (NBTK_TYPE_SUBTEXTURE,
+		       "parent-texture", texture,
+		       "top", top,
+		       "left", left,
+		       "width", width,
+		       "height", height,
+		       NULL);
+}
+
+/**
+ * nbtk_subtexture_get_parent_texture:
+ * @frame: A #NbtkSubtexture
+ *
+ * Return the texture used by the #NbtkSubtexture
+ *
+ * Returns: (transfer none): a #ClutterTexture owned by the #NbtkSubtexture
+ */
+ClutterTexture *
+nbtk_subtexture_get_parent_texture (NbtkSubtexture *frame)
+{
+  g_return_val_if_fail (NBTK_IS_SUBTEXTURE (frame), NULL);
+
+  return frame->priv->parent_texture;
+}
+
+/**
+ * nbtk_subtexture_set_parent_texture:
+ * @frame: A #NbtkSubtexture
+ * @texture: A #ClutterTexture
+ *
+ * Set the #ClutterTexture used by this #NbtkSubtexture
+ *
+ */
+void
+nbtk_subtexture_set_parent_texture (NbtkSubtexture *frame,
+                                       ClutterTexture   *texture)
+{
+  NbtkSubtexturePrivate *priv;
+  gboolean was_visible;
+
+  g_return_if_fail (NBTK_IS_SUBTEXTURE (frame));
+  g_return_if_fail (texture == NULL || CLUTTER_IS_TEXTURE (texture));
+
+  priv = frame->priv;
+
+  was_visible = CLUTTER_ACTOR_IS_VISIBLE (frame);
+
+  if (priv->parent_texture == texture)
+    return;
+
+  if (priv->parent_texture)
+    {
+      g_object_unref (priv->parent_texture);
+      priv->parent_texture = NULL;
+
+      if (was_visible)
+        clutter_actor_hide (CLUTTER_ACTOR (frame));
+    }
+
+  if (texture)
+    {
+      priv->parent_texture = g_object_ref (texture);
+
+      if (was_visible && CLUTTER_ACTOR_IS_VISIBLE (priv->parent_texture))
+        clutter_actor_show (CLUTTER_ACTOR (frame));
+    }
+
+  clutter_actor_queue_relayout (CLUTTER_ACTOR (frame));
+
+  g_object_notify (G_OBJECT (frame), "parent-texture");
+}
+
+/**
+ * nbtk_subtexture_set_frame:
+ * @frame: A #NbtkSubtexture
+ * @left: left
+ * @top: top
+ * @width: width
+ * @height: height
+ *
+ * Set the frame of the subtexture
+ *
+ */
+void
+nbtk_subtexture_set_frame (NbtkSubtexture *frame,
+                              gint            left,
+                              gint            top,
+                              gint            width,
+                              gint            height)
+{
+  g_return_if_fail (NBTK_IS_SUBTEXTURE (frame));
+
+  nbtk_subtexture_set_frame_internal (frame, left, top, width, height);
+}
+
+/**
+ * nbtk_subtexture_get_frame:
+ * @frame: A #NbtkSubtexture
+ * @left: left
+ * @top: top
+ * @width: width
+ * @height: height
+ *
+ * Retrieve the current frame.
+ *
+ */
+void
+nbtk_subtexture_get_frame (NbtkSubtexture *frame,
+                              gint           *left,
+                              gint           *top,
+                              gint           *width,
+                              gint           *height)
+{
+  NbtkSubtexturePrivate *priv;
+
+  g_return_if_fail (NBTK_IS_SUBTEXTURE (frame));
+
+  priv = frame->priv;
+
+  if (top)
+    *top = priv->top;
+
+  if (left)
+    *left = priv->left;
+
+  if (width)
+    *width = priv->width;
+
+  if (height)
+    *height = priv->height;
+}

src/nbtk/nbtk-subtexture.h

@@ -0,0 +1,92 @@
+/*
+ * nbtk-subtexture.h: Class to wrap a texture and "subframe" it.
+ *
+ * Based on
+ * nbtk-texture-frame.h: Expandible texture actor
+ *
+ * Copyright 2007, 2008 OpenedHand Ltd
+ * Copyright 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * Boston, MA 02111-1307, USA.
+ *
+ */
+
+
+#ifndef __NBTK_SUBTEXTURE_H__
+#define __NBTK_SUBTEXTURE_H__
+
+#include <clutter/clutter.h>
+
+G_BEGIN_DECLS
+
+#define NBTK_TYPE_SUBTEXTURE                 (nbtk_subtexture_get_type ())
+#define NBTK_SUBTEXTURE(obj)                 (G_TYPE_CHECK_INSTANCE_CAST ((obj), NBTK_TYPE_SUBTEXTURE, NbtkSubtexture))
+#define NBTK_SUBTEXTURE_CLASS(klass)         (G_TYPE_CHECK_CLASS_CAST ((klass), NBTK_TYPE_SUBTEXTURE, NbtkSubtextureClass))
+#define NBTK_IS_SUBTEXTURE(obj)              (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NBTK_TYPE_SUBTEXTURE))
+#define NBTK_IS_SUBTEXTURE_CLASS(klass)      (G_TYPE_CHECK_CLASS_TYPE ((klass), NBTK_TYPE_SUBTEXTURE))
+#define NBTK_SUBTEXTURE_GET_CLASS(obj)       (G_TYPE_INSTANCE_GET_CLASS ((obj), NBTK_TYPE_SUBTEXTURE, NbtkSubtextureClass))
+
+typedef struct _NbtkSubtexture                NbtkSubtexture;
+typedef struct _NbtkSubtexturePrivate         NbtkSubtexturePrivate;
+typedef struct _NbtkSubtextureClass           NbtkSubtextureClass;
+
+/**
+ * NbtkSubtexture:
+ *
+ * The contents of this structure are private and should only be accessed
+ * through the public API.
+ */
+struct _NbtkSubtexture
+{
+  /*< private >*/
+  ClutterActor parent_instance;
+
+  NbtkSubtexturePrivate    *priv;
+};
+
+struct _NbtkSubtextureClass
+{
+  ClutterActorClass parent_class;
+
+  /* padding for future expansion */
+  void (*_nbtk_box_1) (void);
+  void (*_nbtk_box_2) (void);
+  void (*_nbtk_box_3) (void);
+  void (*_nbtk_box_4) (void);
+};
+
+GType           nbtk_subtexture_get_type           (void) G_GNUC_CONST;
+ClutterActor *  nbtk_subtexture_new                (ClutterTexture   *texture,
+                                                       gint            top,
+                                                       gint            left,
+                                                       gint            width,
+                                                       gint            height);
+void            nbtk_subtexture_set_parent_texture (NbtkSubtexture *frame,
+                                                       ClutterTexture   *texture);
+ClutterTexture *nbtk_subtexture_get_parent_texture (NbtkSubtexture *frame);
+void            nbtk_subtexture_set_frame          (NbtkSubtexture *frame,
+                                                       gint            top,
+                                                       gint            left,
+                                                       gint            width,
+                                                       gint            height);
+void            nbtk_subtexture_get_frame          (NbtkSubtexture *frame,
+                                                       gint           *top,
+                                                       gint           *left,
+                                                       gint           *width,
+                                                       gint           *height);
+
+G_END_DECLS
+
+#endif /* __NBTK_SUBTEXTURE_H__ */

src/nbtk/nbtk-texture-cache.c

@@ -0,0 +1,456 @@
+/*
+ * nbtk-widget.h: Base class for Nbtk actors
+ *
+ * Copyright 2007 OpenedHand
+ * Copyright 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * Boston, MA 02111-1307, USA.
+ *
+ */
+
+/**
+ * SECTION:nbtk-texture-cache
+ * @short_description: A per-process store to cache textures
+ *
+ * #NbtkTextureCache allows an application to re-use an previously loaded
+ * textures.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <glib.h>
+#include <glib-object.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <string.h>
+
+#include "nbtk-texture-cache.h"
+#include "nbtk-marshal.h"
+#include "nbtk-private.h"
+#include "nbtk-subtexture.h"
+G_DEFINE_TYPE (NbtkTextureCache, nbtk_texture_cache, G_TYPE_OBJECT)
+
+#define TEXTURE_CACHE_PRIVATE(o) \
+  (G_TYPE_INSTANCE_GET_PRIVATE ((o), NBTK_TYPE_TEXTURE_CACHE, NbtkTextureCachePrivate))
+
+typedef struct _NbtkTextureCachePrivate NbtkTextureCachePrivate;
+
+struct _NbtkTextureCachePrivate
+{
+  GHashTable  *cache;
+};
+
+typedef struct FinalizedClosure
+{
+  gchar             *path;
+  NbtkTextureCache  *cache;
+} FinalizedClosure;
+
+enum
+{
+  PROP_0,
+};
+
+static NbtkTextureCache* __cache_singleton = NULL;
+
+/*
+ * Convention: posX with a value of -1 indicates whole texture
+ */
+typedef struct NbtkTextureCacheItem {
+  char filename[256];
+  int  width, height;
+  int  posX, posY;
+  ClutterActor *ptr;
+} NbtkTextureCacheItem;
+
+static NbtkTextureCacheItem *
+nbtk_texture_cache_item_new (void)
+{
+  return g_slice_new0 (NbtkTextureCacheItem);
+}
+
+static void
+nbtk_texture_cache_item_free (NbtkTextureCacheItem *item)
+{
+  g_slice_free (NbtkTextureCacheItem, item);
+}
+
+static void
+nbtk_texture_cache_set_property (GObject      *object,
+                                 guint         prop_id,
+                                 const GValue *value,
+                                 GParamSpec   *pspec)
+{
+  switch (prop_id)
+    {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+nbtk_texture_cache_get_property (GObject    *object,
+                                 guint       prop_id,
+                                 GValue     *value,
+                                 GParamSpec *pspec)
+{
+  switch (prop_id)
+    {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+nbtk_texture_cache_dispose (GObject *object)
+{
+  if (G_OBJECT_CLASS (nbtk_texture_cache_parent_class)->dispose)
+    G_OBJECT_CLASS (nbtk_texture_cache_parent_class)->dispose (object);
+}
+
+static void
+nbtk_texture_cache_finalize (GObject *object)
+{
+  NbtkTextureCachePrivate *priv = TEXTURE_CACHE_PRIVATE(object);
+
+  if (priv->cache)
+    {
+      g_hash_table_unref (priv->cache);
+      priv->cache = NULL;
+    }
+
+  G_OBJECT_CLASS (nbtk_texture_cache_parent_class)->finalize (object);
+}
+
+static void
+nbtk_texture_cache_class_init (NbtkTextureCacheClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  g_type_class_add_private (klass, sizeof (NbtkTextureCachePrivate));
+
+  object_class->get_property = nbtk_texture_cache_get_property;
+  object_class->set_property = nbtk_texture_cache_set_property;
+  object_class->dispose = nbtk_texture_cache_dispose;
+  object_class->finalize = nbtk_texture_cache_finalize;
+
+}
+
+static void
+nbtk_texture_cache_init (NbtkTextureCache *self)
+{
+  NbtkTextureCachePrivate *priv = TEXTURE_CACHE_PRIVATE(self);
+
+  priv->cache = g_hash_table_new_full (g_str_hash,
+                                       g_str_equal,
+                                       g_free,
+                                       NULL);
+
+}
+
+/**
+ * nbtk_texture_cache_get_default:
+ *
+ * Returns the default texture cache. This is owned by Nbtk and should not be
+ * unreferenced or freed.
+ *
+ * Returns: (transfer none): a NbtkTextureCache
+ */
+NbtkTextureCache*
+nbtk_texture_cache_get_default (void)
+{
+  if (G_UNLIKELY (__cache_singleton == NULL))
+    __cache_singleton = g_object_new (NBTK_TYPE_TEXTURE_CACHE, NULL);
+
+  return  __cache_singleton;
+}
+
+#if 0
+static void
+on_texure_finalized (gpointer data,
+		     GObject *where_the_object_was)
+{
+  FinalizedClosure *closure = (FinalizedClosure *)data;
+  NbtkTextureCachePrivate *priv = TEXTURE_CACHE_PRIVATE(closure->cache);
+
+  g_hash_table_remove (priv->cache, closure->path);
+
+  g_free(closure->path);
+  g_free(closure);
+}
+#endif
+
+/**
+ * nbtk_texture_cache_get_size:
+ * @self: A #NbtkTextureCache
+ *
+ * Returns the number of items in the texture cache
+ *
+ * Returns: the current size of the cache
+ */
+gint
+nbtk_texture_cache_get_size (NbtkTextureCache *self)
+{
+  NbtkTextureCachePrivate *priv = TEXTURE_CACHE_PRIVATE(self);
+
+  return g_hash_table_size (priv->cache);
+}
+
+static void
+add_texture_to_cache (NbtkTextureCache     *self,
+                      const gchar          *path,
+                      NbtkTextureCacheItem *item)
+{
+  /*  FinalizedClosure        *closure; */
+  NbtkTextureCachePrivate *priv = TEXTURE_CACHE_PRIVATE(self);
+
+  g_hash_table_insert (priv->cache, g_strdup (path), item);
+
+#if 0
+  /* Make sure we can remove from hash */
+  closure = g_new0 (FinalizedClosure, 1);
+  closure->path = g_strdup (path);
+  closure->cache = self;
+
+  g_object_weak_ref (G_OBJECT (res), on_texure_finalized, closure);
+#endif
+}
+
+/* NOTE: you should unref the returned texture when not needed */
+
+/**
+ * nbtk_texture_cache_get_texture:
+ * @self: A #NbtkTextureCache
+ * @path: A path to a image file
+ * @want_clone: ignored
+ *
+ * Create a new ClutterTexture with the specified image. Adds the image to the
+ * cache if the image had not been previously loaded. Subsequent calls with
+ * the same image path will return a new ClutterTexture with the previously
+ * loaded image.
+ *
+ * Returns: (transfer none): a newly created ClutterTexture
+ */
+ClutterTexture*
+nbtk_texture_cache_get_texture (NbtkTextureCache *self,
+                                const gchar      *path,
+                                gboolean          want_clone)
+{
+  ClutterActor *texture;
+  CoglHandle *handle;
+  NbtkTextureCachePrivate *priv;
+  NbtkTextureCacheItem *item;
+
+  g_return_val_if_fail (NBTK_IS_TEXTURE_CACHE (self), NULL);
+  g_return_val_if_fail (path != NULL, NULL);
+
+
+  priv = TEXTURE_CACHE_PRIVATE (self);
+
+  if (want_clone)
+    g_warning ("The want_clone parameter of %s is now ignored. This function "
+               "always returns a new ClutterTexture", __FUNCTION__);
+
+  item = g_hash_table_lookup (priv->cache, path);
+
+  if (item && item->posX != -1)
+    {
+      GError *err = NULL;
+      /*
+       * We have a cache hit, but it's for a partial texture. The only
+       * sane option is to read it from disk and just don't cache it
+       * at all.
+       */
+      return CLUTTER_TEXTURE(clutter_texture_new_from_file(path, &err));
+    }
+  if (!item)
+    {
+      GError *err = NULL;
+
+      item = nbtk_texture_cache_item_new ();
+      item->posX = -1;
+      item->posY = -1;
+      item->ptr = clutter_texture_new_from_file (path, &err);
+      clutter_texture_get_base_size (CLUTTER_TEXTURE (item->ptr),
+                                     &item->width, &item->height);
+
+      if (!item->ptr)
+        {
+          if (err)
+            {
+              g_warning ("Error loading image: %s", err->message);
+              g_error_free (err);
+            }
+
+          return NULL;
+        }
+
+      add_texture_to_cache (self, path, item);
+    }
+
+  texture = clutter_texture_new ();
+  handle = clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (item->ptr));
+  clutter_texture_set_cogl_texture ((ClutterTexture*) texture, handle);
+
+  return (ClutterTexture*) texture;
+}
+
+
+/**
+ * nbtk_texture_cache_get_actor:
+ * @self: A #NbtkTextureCache
+ * @path: A path to a image file
+ *
+ * Create a new ClutterSubTexture with the specified image. Adds the image to the
+ * cache if the image had not been previously loaded. Subsequent calls with
+ * the same image path will return a new ClutterTexture with the previously
+ * loaded image.
+ *
+ * Use this function if all you need is an actor for drawing.
+ *
+ * Returns: (transfer none): a newly created ClutterTexture
+ */
+ClutterActor*
+nbtk_texture_cache_get_actor (NbtkTextureCache *self,
+                              const gchar      *path)
+{
+  NbtkTextureCachePrivate *priv;
+  NbtkTextureCacheItem *item;
+  GError *err = NULL;
+
+  g_return_val_if_fail (NBTK_IS_TEXTURE_CACHE (self), NULL);
+  g_return_val_if_fail (path != NULL, NULL);
+
+  priv = TEXTURE_CACHE_PRIVATE (self);
+
+
+  item = g_hash_table_lookup (priv->cache, path);
+
+  if (item)
+    {
+      int posX = item->posX;
+      int posY = item->posY;
+      if (posX == -1)
+          posX = 0;
+      if (posY == -1)
+          posY = 0;
+      return nbtk_subtexture_new (CLUTTER_TEXTURE (item->ptr), posX, posY,
+                                  item->width, item->height);
+    }
+
+  item = nbtk_texture_cache_item_new ();
+  item->posX = -1;
+  item->posY = -1;
+  item->ptr = clutter_texture_new_from_file (path, &err);
+  clutter_texture_get_base_size (CLUTTER_TEXTURE (item->ptr),
+                                 &item->width, &item->height);
+
+  if (!item->ptr)
+    {
+      if (err)
+        {
+          g_warning ("Error loading image: %s", err->message);
+          g_error_free (err);
+        }
+
+      return NULL;
+    }
+
+  add_texture_to_cache (self, path, item);
+
+  return nbtk_subtexture_new (CLUTTER_TEXTURE (item->ptr), 0, 0, item->width,
+                              item->height);
+}
+
+void
+nbtk_texture_cache_load_cache (NbtkTextureCache *self,
+                               const gchar      *filename)
+{
+   FILE *file;
+   NbtkTextureCacheItem *element, head;
+   int ret;
+   ClutterActor *actor;
+   GError *error = NULL;
+   NbtkTextureCachePrivate *priv;
+
+   g_return_if_fail (NBTK_IS_TEXTURE_CACHE (self));
+   g_return_if_fail (filename != NULL);
+
+   priv = TEXTURE_CACHE_PRIVATE (self);
+
+   file = fopen(filename, "rm");
+   if (!file)
+      return;
+
+   ret = fread (&head, sizeof(NbtkTextureCacheItem), 1, file);
+   if (ret < 0)
+     {
+        fclose (file);
+        return;
+     }
+
+   /* check if we already if this texture in the cache */
+   if (g_hash_table_lookup (priv->cache, head.filename))
+     {
+        /* skip it, we're done */
+        fclose (file);
+        return;
+     }
+
+   actor = clutter_texture_new_from_file (head.filename, &error);
+
+   if (error)
+   {
+     g_critical (G_STRLOC ": Error opening cache image file: %s",
+                 error->message);
+     g_clear_error (&error);
+     fclose (file);
+     return;
+   }
+
+   element = nbtk_texture_cache_item_new ();
+   element->posX = -1;
+   element->posY = -1;
+   element->ptr = actor;
+   strncpy (element->filename, head.filename, 256);
+   clutter_texture_get_base_size (CLUTTER_TEXTURE (element->ptr),
+                                  &element->width, &element->height);
+   g_hash_table_insert (priv->cache, element->filename, element);
+
+   while (!feof (file))
+     {
+        element = nbtk_texture_cache_item_new ();
+        ret = fread (element, sizeof (NbtkTextureCacheItem), 1, file);
+        if (ret < 1)
+          {
+             /* end of file */
+             nbtk_texture_cache_item_free (element);
+             break;
+          }
+
+        element->ptr = actor;
+
+        if (g_hash_table_lookup (priv->cache, element->filename))
+          {
+            /* file is already in the cache.... */
+            nbtk_texture_cache_item_free (element);
+          } else {
+            g_hash_table_insert (priv->cache, element->filename, element);
+          }
+     }
+}

src/nbtk/nbtk-texture-cache.h

@@ -0,0 +1,94 @@
+/*
+ * nbtk-texture-cache.h: Cached textures object
+ *
+ * Copyright 2007 OpenedHand
+ * Copyright 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * Boston, MA 02111-1307, USA.
+ *
+ */
+
+#if !defined(NBTK_H_INSIDE) && !defined(NBTK_COMPILATION)
+#error "Only <nbtk/nbtk.h> can be included directly.h"
+#endif
+
+#ifndef _NBTK_TEXTURE_CACHE
+#define _NBTK_TEXTURE_CACHE
+
+#include <glib-object.h>
+#include <clutter/clutter.h>
+
+G_BEGIN_DECLS
+
+#define NBTK_TYPE_TEXTURE_CACHE nbtk_texture_cache_get_type()
+
+#define NBTK_TEXTURE_CACHE(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST ((obj), \
+  NBTK_TYPE_TEXTURE_CACHE, NbtkTextureCache))
+
+#define NBTK_TEXTURE_CACHE_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST ((klass), \
+  NBTK_TYPE_TEXTURE_CACHE, NbtkTextureCacheClass))
+
+#define NBTK_IS_TEXTURE_CACHE(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
+  NBTK_TYPE_TEXTURE_CACHE))
+
+#define NBTK_IS_TEXTURE_CACHE_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE ((klass), \
+  NBTK_TYPE_TEXTURE_CACHE))
+
+#define NBTK_TEXTURE_CACHE_GET_CLASS(obj) \
+  (G_TYPE_INSTANCE_GET_CLASS ((obj), \
+  NBTK_TYPE_TEXTURE_CACHE, NbtkTextureCacheClass))
+
+/**
+ * NbtkTextureCache:
+ *
+ * The contents of this structure are private and should only be accessed
+ * through the public API.
+ */
+typedef struct {
+    /*< private >*/
+    GObject parent;
+} NbtkTextureCache;
+
+typedef struct {
+  GObjectClass parent_class;
+
+  void (* loaded)        (NbtkTextureCache *self,
+                          const gchar      *path,
+                          ClutterTexture   *texture);
+
+  void (* error_loading) (NbtkTextureCache *self,
+                          GError           *error);
+} NbtkTextureCacheClass;
+
+GType nbtk_texture_cache_get_type (void);
+
+NbtkTextureCache* nbtk_texture_cache_get_default (void);
+ClutterTexture*   nbtk_texture_cache_get_texture (NbtkTextureCache *self,
+                                                  const gchar *path,
+                                                  gboolean want_clone);
+ClutterActor*     nbtk_texture_cache_get_actor (NbtkTextureCache *self,
+                                                  const gchar *path);
+
+gint              nbtk_texture_cache_get_size    (NbtkTextureCache *self);
+
+void nbtk_texture_cache_load_cache(NbtkTextureCache *self, const char *filename);
+
+G_END_DECLS
+
+#endif /* _NBTK_TEXTURE_CACHE */

src/nbtk/nbtk-texture-frame.c

@@ -0,0 +1,620 @@
+/*
+ * nbtk-texture-frame.h: Expandible texture actor
+ *
+ * Copyright 2007 OpenedHand
+ * Copyright 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * Boston, MA 02111-1307, USA.
+ *
+ */
+
+/**
+ * SECTION:nbtk-texture-frame
+ * @short_description: Stretch a texture to fit the entire allocation
+ *
+ * #NbtkTextureFrame
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <cogl/cogl.h>
+
+#include "nbtk-texture-frame.h"
+#include "nbtk-private.h"
+
+enum
+{
+  PROP_0,
+
+  PROP_PARENT_TEXTURE,
+
+  PROP_TOP,
+  PROP_RIGHT,
+  PROP_BOTTOM,
+  PROP_LEFT
+};
+
+G_DEFINE_TYPE (NbtkTextureFrame, nbtk_texture_frame, CLUTTER_TYPE_ACTOR);
+
+#define NBTK_TEXTURE_FRAME_GET_PRIVATE(obj)     (G_TYPE_INSTANCE_GET_PRIVATE ((obj), NBTK_TYPE_TEXTURE_FRAME, NbtkTextureFramePrivate))
+
+struct _NbtkTextureFramePrivate
+{
+  ClutterTexture *parent_texture;
+
+  gfloat top;
+  gfloat right;
+  gfloat bottom;
+  gfloat left;
+};
+
+static void
+nbtk_texture_frame_get_preferred_width (ClutterActor *self,
+                                        gfloat        for_height,
+                                        gfloat       *min_width_p,
+                                        gfloat       *natural_width_p)
+{
+  NbtkTextureFramePrivate *priv = NBTK_TEXTURE_FRAME (self)->priv;
+
+  if (G_UNLIKELY (priv->parent_texture == NULL))
+    {
+      if (min_width_p)
+        *min_width_p = 0;
+
+      if (natural_width_p)
+        *natural_width_p = 0;
+    }
+  else
+    {
+      ClutterActorClass *klass;
+
+      /* by directly querying the parent texture's class implementation
+       * we are going around any override mechanism the parent texture
+       * might have in place, and we ask directly for the original
+       * preferred width
+       */
+      klass = CLUTTER_ACTOR_GET_CLASS (priv->parent_texture);
+      klass->get_preferred_width (CLUTTER_ACTOR (priv->parent_texture),
+                                  for_height,
+                                  min_width_p,
+                                  natural_width_p);
+    }
+}
+
+static void
+nbtk_texture_frame_get_preferred_height (ClutterActor *self,
+                                         gfloat        for_width,
+                                         gfloat       *min_height_p,
+                                         gfloat       *natural_height_p)
+{
+  NbtkTextureFramePrivate *priv = NBTK_TEXTURE_FRAME (self)->priv;
+
+  if (G_UNLIKELY (priv->parent_texture == NULL))
+    {
+      if (min_height_p)
+        *min_height_p = 0;
+
+      if (natural_height_p)
+        *natural_height_p = 0;
+    }
+  else
+    {
+      ClutterActorClass *klass;
+
+      /* by directly querying the parent texture's class implementation
+       * we are going around any override mechanism the parent texture
+       * might have in place, and we ask directly for the original
+       * preferred height
+       */
+      klass = CLUTTER_ACTOR_GET_CLASS (priv->parent_texture);
+      klass->get_preferred_height (CLUTTER_ACTOR (priv->parent_texture),
+                                   for_width,
+                                   min_height_p,
+                                   natural_height_p);
+    }
+}
+
+static void
+nbtk_texture_frame_paint (ClutterActor *self)
+{
+  NbtkTextureFramePrivate *priv = NBTK_TEXTURE_FRAME (self)->priv;
+  CoglHandle cogl_texture = COGL_INVALID_HANDLE;
+  CoglHandle cogl_material = COGL_INVALID_HANDLE;
+  ClutterActorBox box = { 0, };
+  gfloat width, height;
+  gfloat tex_width, tex_height;
+  gfloat ex, ey;
+  gfloat tx1, ty1, tx2, ty2;
+  guint8 opacity;
+
+  /* no need to paint stuff if we don't have a texture */
+  if (G_UNLIKELY (priv->parent_texture == NULL))
+    return;
+
+  /* parent texture may have been hidden, so need to make sure it gets
+   * realized
+   */
+  if (!CLUTTER_ACTOR_IS_REALIZED (priv->parent_texture))
+    clutter_actor_realize (CLUTTER_ACTOR (priv->parent_texture));
+
+  cogl_texture = clutter_texture_get_cogl_texture (priv->parent_texture);
+  if (cogl_texture == COGL_INVALID_HANDLE)
+    return;
+  cogl_material = clutter_texture_get_cogl_material (priv->parent_texture);
+  if (cogl_material == COGL_INVALID_HANDLE)
+    return;
+
+  tex_width  = cogl_texture_get_width (cogl_texture);
+  tex_height = cogl_texture_get_height (cogl_texture);
+
+  clutter_actor_get_allocation_box (self, &box);
+  width = box.x2 - box.x1;
+  height = box.y2 - box.y1;
+
+  tx1 = priv->left / tex_width;
+  tx2 = (tex_width - priv->right) / tex_width;
+  ty1 = priv->top / tex_height;
+  ty2 = (tex_height - priv->bottom) / tex_height;
+
+  ex = width - priv->right;
+  if (ex < 0)
+    ex = priv->right; 		/* FIXME ? */
+
+  ey = height - priv->bottom;
+  if (ey < 0)
+    ey = priv->bottom; 		/* FIXME ? */
+
+  opacity = clutter_actor_get_paint_opacity (self);
+
+  /* Paint using the parent texture's material. It should already have
+     the cogl texture set as the first layer */
+  /* NB: for correct blending we need set a preumultiplied color here: */
+  cogl_material_set_color4ub (cogl_material,
+                              opacity, opacity, opacity, opacity);
+  cogl_set_source (cogl_material);
+
+  {
+    GLfloat rectangles[] =
+      {
+        /* top left corner */
+        0, 0, priv->left, priv->top,
+        0.0, 0.0,
+        tx1, ty1,
+
+        /* top middle */
+        priv->left, 0, ex, priv->top,
+        tx1, 0.0,
+        tx2, ty1,
+
+        /* top right */
+        ex, 0, width, priv->top,
+        tx2, 0.0,
+        1.0, ty1,
+
+        /* mid left */
+        0, priv->top, priv->left, ey,
+        0.0, ty1,
+        tx1, ty2,
+
+        /* center */
+        priv->left, priv->top, ex, ey,
+        tx1, ty1,
+        tx2, ty2,
+
+        /* mid right */
+        ex, priv->top, width, ey,
+        tx2, ty1,
+        1.0, ty2,
+
+        /* bottom left */
+        0, ey, priv->left, height,
+        0.0, ty2,
+        tx1, 1.0,
+
+        /* bottom center */
+        priv->left, ey, ex, height,
+        tx1, ty2,
+        tx2, 1.0,
+
+        /* bottom right */
+        ex, ey, width, height,
+        tx2, ty2,
+        1.0, 1.0
+      };
+
+    cogl_rectangles_with_texture_coords (rectangles, 9);
+  }
+}
+
+static inline void
+nbtk_texture_frame_set_frame_internal (NbtkTextureFrame *frame,
+                                       gfloat            top,
+                                       gfloat            right,
+                                       gfloat            bottom,
+                                       gfloat            left)
+{
+  NbtkTextureFramePrivate *priv = frame->priv;
+  GObject *gobject = G_OBJECT (frame);
+  gboolean changed = FALSE;
+
+  g_object_freeze_notify (gobject);
+
+  if (priv->top != top)
+    {
+      priv->top = top;
+      g_object_notify (gobject, "top");
+      changed = TRUE;
+    }
+
+  if (priv->right != right)
+    {
+      priv->right = right;
+      g_object_notify (gobject, "right");
+      changed = TRUE;
+    }
+
+  if (priv->bottom != bottom)
+    {
+      priv->bottom = bottom;
+      g_object_notify (gobject, "bottom");
+      changed = TRUE;
+    }
+
+  if (priv->left != left)
+    {
+      priv->left = left;
+      g_object_notify (gobject, "left");
+      changed = TRUE;
+    }
+
+  if (changed && CLUTTER_ACTOR_IS_VISIBLE (frame))
+    clutter_actor_queue_redraw (CLUTTER_ACTOR (frame));
+
+  g_object_thaw_notify (gobject);
+}
+
+static void
+nbtk_texture_frame_set_property (GObject      *gobject,
+                                 guint         prop_id,
+                                 const GValue *value,
+                                 GParamSpec   *pspec)
+{
+  NbtkTextureFrame *frame = NBTK_TEXTURE_FRAME (gobject);
+  NbtkTextureFramePrivate *priv = frame->priv;
+
+  switch (prop_id)
+    {
+    case PROP_PARENT_TEXTURE:
+      nbtk_texture_frame_set_parent_texture (frame,
+                                             g_value_get_object (value));
+      break;
+
+    case PROP_TOP:
+      nbtk_texture_frame_set_frame_internal (frame,
+                                             g_value_get_float (value),
+                                             priv->right,
+                                             priv->bottom,
+                                             priv->left);
+      break;
+
+    case PROP_RIGHT:
+      nbtk_texture_frame_set_frame_internal (frame,
+                                             priv->top,
+                                             g_value_get_float (value),
+                                             priv->bottom,
+                                             priv->left);
+      break;
+
+    case PROP_BOTTOM:
+      nbtk_texture_frame_set_frame_internal (frame,
+                                             priv->top,
+                                             priv->right,
+                                             g_value_get_float (value),
+                                             priv->left);
+      break;
+
+    case PROP_LEFT:
+      nbtk_texture_frame_set_frame_internal (frame,
+                                             priv->top,
+                                             priv->right,
+                                             priv->bottom,
+                                             g_value_get_float (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+nbtk_texture_frame_get_property (GObject    *gobject,
+                                 guint       prop_id,
+                                 GValue     *value,
+                                 GParamSpec *pspec)
+{
+  NbtkTextureFramePrivate *priv = NBTK_TEXTURE_FRAME (gobject)->priv;
+
+  switch (prop_id)
+    {
+    case PROP_PARENT_TEXTURE:
+      g_value_set_object (value, priv->parent_texture);
+      break;
+
+    case PROP_LEFT:
+      g_value_set_float (value, priv->left);
+      break;
+
+    case PROP_TOP:
+      g_value_set_float (value, priv->top);
+      break;
+
+    case PROP_RIGHT:
+      g_value_set_float (value, priv->right);
+      break;
+
+    case PROP_BOTTOM:
+      g_value_set_float (value, priv->bottom);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+nbtk_texture_frame_dispose (GObject *gobject)
+{
+  NbtkTextureFramePrivate *priv = NBTK_TEXTURE_FRAME (gobject)->priv;
+
+  if (priv->parent_texture)
+    {
+      g_object_unref (priv->parent_texture);
+      priv->parent_texture = NULL;
+    }
+
+  G_OBJECT_CLASS (nbtk_texture_frame_parent_class)->dispose (gobject);
+}
+
+static void
+nbtk_texture_frame_class_init (NbtkTextureFrameClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
+  GParamSpec *pspec;
+
+  g_type_class_add_private (gobject_class, sizeof (NbtkTextureFramePrivate));
+
+  actor_class->get_preferred_width =
+    nbtk_texture_frame_get_preferred_width;
+  actor_class->get_preferred_height =
+    nbtk_texture_frame_get_preferred_height;
+  actor_class->paint = nbtk_texture_frame_paint;
+
+  gobject_class->set_property = nbtk_texture_frame_set_property;
+  gobject_class->get_property = nbtk_texture_frame_get_property;
+  gobject_class->dispose = nbtk_texture_frame_dispose;
+
+  pspec = g_param_spec_object ("parent-texture",
+                               "Parent Texture",
+                               "The parent ClutterTexture",
+                               CLUTTER_TYPE_TEXTURE,
+                               NBTK_PARAM_READWRITE |
+                               G_PARAM_CONSTRUCT);
+  g_object_class_install_property (gobject_class, PROP_PARENT_TEXTURE, pspec);
+
+  pspec = g_param_spec_float ("left",
+                              "Left",
+                              "Left offset",
+			      0, G_MAXFLOAT,
+                              0,
+                              NBTK_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_LEFT, pspec);
+
+  pspec = g_param_spec_float ("top",
+                              "Top",
+                              "Top offset",
+                              0, G_MAXFLOAT,
+                              0,
+                              NBTK_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_TOP, pspec);
+
+  pspec = g_param_spec_float ("bottom",
+                              "Bottom",
+                              "Bottom offset",
+                              0, G_MAXFLOAT,
+                              0,
+                              NBTK_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_BOTTOM, pspec);
+
+  pspec = g_param_spec_float ("right",
+                              "Right",
+                              "Right offset",
+                              0, G_MAXFLOAT,
+                              0,
+                              NBTK_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_RIGHT, pspec);
+}
+
+static void
+nbtk_texture_frame_init (NbtkTextureFrame *self)
+{
+  NbtkTextureFramePrivate *priv;
+
+  self->priv = priv = NBTK_TEXTURE_FRAME_GET_PRIVATE (self);
+}
+
+/**
+ * nbtk_texture_frame_new:
+ * @texture: a #ClutterTexture or %NULL
+ * @left: left margin preserving its content
+ * @top: top margin preserving its content
+ * @right: right margin preserving its content
+ * @bottom: bottom margin preserving its content
+ *
+ * A #NbtkTextureFrame is a specialized texture that efficiently clones
+ * an area of the given @texture while keeping preserving portions of the
+ * same texture.
+ *
+ * A #NbtkTextureFrame can be used to make a rectangular texture fit a
+ * given size without stretching its borders.
+ *
+ * Return value: the newly created #NbtkTextureFrame
+ */
+ClutterActor*
+nbtk_texture_frame_new (ClutterTexture *texture,
+			gfloat          top,
+			gfloat          right,
+			gfloat          bottom,
+			gfloat          left)
+{
+  g_return_val_if_fail (texture == NULL || CLUTTER_IS_TEXTURE (texture), NULL);
+
+  return g_object_new (NBTK_TYPE_TEXTURE_FRAME,
+		       "parent-texture", texture,
+		       "top", top,
+		       "right", right,
+		       "bottom", bottom,
+		       "left", left,
+		       NULL);
+}
+
+/**
+ * nbtk_texture_frame_get_parent_texture:
+ * @frame: A #NbtkTextureFrame
+ *
+ * Return the texture used by the #NbtkTextureFrame
+ *
+ * Returns: (transfer none): a #ClutterTexture owned by the #NbtkTextureFrame
+ */
+ClutterTexture *
+nbtk_texture_frame_get_parent_texture (NbtkTextureFrame *frame)
+{
+  g_return_val_if_fail (NBTK_IS_TEXTURE_FRAME (frame), NULL);
+
+  return frame->priv->parent_texture;
+}
+
+/**
+ * nbtk_texture_frame_set_parent_texture:
+ * @frame: A #NbtkTextureFrame
+ * @texture: A #ClutterTexture
+ *
+ * Set the #ClutterTexture used by this #NbtkTextureFrame
+ *
+ */
+void
+nbtk_texture_frame_set_parent_texture (NbtkTextureFrame *frame,
+                                       ClutterTexture   *texture)
+{
+  NbtkTextureFramePrivate *priv;
+  gboolean was_visible;
+
+  g_return_if_fail (NBTK_IS_TEXTURE_FRAME (frame));
+  g_return_if_fail (texture == NULL || CLUTTER_IS_TEXTURE (texture));
+
+  priv = frame->priv;
+
+  was_visible = CLUTTER_ACTOR_IS_VISIBLE (frame);
+
+  if (priv->parent_texture == texture)
+    return;
+
+  if (priv->parent_texture)
+    {
+      g_object_unref (priv->parent_texture);
+      priv->parent_texture = NULL;
+
+      if (was_visible)
+        clutter_actor_hide (CLUTTER_ACTOR (frame));
+    }
+
+  if (texture)
+    {
+      priv->parent_texture = g_object_ref_sink (texture);
+
+      if (was_visible && CLUTTER_ACTOR_IS_VISIBLE (priv->parent_texture))
+        clutter_actor_show (CLUTTER_ACTOR (frame));
+    }
+
+  clutter_actor_queue_relayout (CLUTTER_ACTOR (frame));
+
+  g_object_notify (G_OBJECT (frame), "parent-texture");
+}
+
+/**
+ * nbtk_texture_frame_set_frame:
+ * @frame: A #NbtkTextureFrame
+ * @top: width of the top slice
+ * @right: width of the right slice
+ * @bottom: width of the bottom slice
+ * @left: width of the left slice
+ *
+ * Set the slice lines of the specified frame. The slices are calculated as
+ * widths from the edge of the frame.
+ *
+ */
+void
+nbtk_texture_frame_set_frame (NbtkTextureFrame *frame,
+                              gfloat            top,
+                              gfloat            right,
+                              gfloat            bottom,
+                              gfloat            left)
+{
+  g_return_if_fail (NBTK_IS_TEXTURE_FRAME (frame));
+
+  nbtk_texture_frame_set_frame_internal (frame, top, right, bottom, left);
+}
+
+/**
+ * nbtk_texture_frame_get_frame:
+ * @frame: A #NbtkTextureFrame
+ * @top: width of the top slice
+ * @right: width of the right slice
+ * @bottom: width of the bottom slice
+ * @left: width of the left slice
+ *
+ * Retrieve the current slice lines from the specified frame.
+ *
+ */
+void
+nbtk_texture_frame_get_frame (NbtkTextureFrame *frame,
+                              gfloat           *top,
+                              gfloat           *right,
+                              gfloat           *bottom,
+                              gfloat           *left)
+{
+  NbtkTextureFramePrivate *priv;
+
+  g_return_if_fail (NBTK_IS_TEXTURE_FRAME (frame));
+
+  priv = frame->priv;
+
+  if (top)
+    *top = priv->top;
+
+  if (right)
+    *right = priv->right;
+
+  if (bottom)
+    *bottom = priv->bottom;
+
+  if (left)
+    *left = priv->left;
+}

src/nbtk/nbtk-texture-frame.h

@@ -0,0 +1,92 @@
+/*
+ * nbtk-texture-frame.h: Expandible texture actor
+ *
+ * Copyright 2007, 2008 OpenedHand Ltd
+ * Copyright 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * Boston, MA 02111-1307, USA.
+ *
+ */
+
+#if !defined(NBTK_H_INSIDE) && !defined(NBTK_COMPILATION)
+#error "Only <nbtk/nbtk.h> can be included directly.h"
+#endif
+
+#ifndef __NBTK_TEXTURE_FRAME_H__
+#define __NBTK_TEXTURE_FRAME_H__
+
+#include <clutter/clutter.h>
+
+G_BEGIN_DECLS
+
+#define NBTK_TYPE_TEXTURE_FRAME                 (nbtk_texture_frame_get_type ())
+#define NBTK_TEXTURE_FRAME(obj)                 (G_TYPE_CHECK_INSTANCE_CAST ((obj), NBTK_TYPE_TEXTURE_FRAME, NbtkTextureFrame))
+#define NBTK_TEXTURE_FRAME_CLASS(klass)         (G_TYPE_CHECK_CLASS_CAST ((klass), NBTK_TYPE_TEXTURE_FRAME, NbtkTextureFrameClass))
+#define NBTK_IS_TEXTURE_FRAME(obj)              (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NBTK_TYPE_TEXTURE_FRAME))
+#define NBTK_IS_TEXTURE_FRAME_CLASS(klass)      (G_TYPE_CHECK_CLASS_TYPE ((klass), NBTK_TYPE_TEXTURE_FRAME))
+#define NBTK_TEXTURE_FRAME_GET_CLASS(obj)       (G_TYPE_INSTANCE_GET_CLASS ((obj), NBTK_TYPE_TEXTURE_FRAME, NbtkTextureFrameClass))
+
+typedef struct _NbtkTextureFrame                NbtkTextureFrame;
+typedef struct _NbtkTextureFramePrivate         NbtkTextureFramePrivate;
+typedef struct _NbtkTextureFrameClass           NbtkTextureFrameClass;
+
+/**
+ * NbtkTextureFrame:
+ *
+ * The contents of this structure are private and should only be accessed
+ * through the public API.
+ */
+struct _NbtkTextureFrame
+{
+  /*< private >*/
+  ClutterActor parent_instance;
+
+  NbtkTextureFramePrivate    *priv;
+};
+
+struct _NbtkTextureFrameClass
+{
+  ClutterActorClass parent_class;
+
+  /* padding for future expansion */
+  void (*_clutter_box_1) (void);
+  void (*_clutter_box_2) (void);
+  void (*_clutter_box_3) (void);
+  void (*_clutter_box_4) (void);
+};
+
+GType           nbtk_texture_frame_get_type           (void) G_GNUC_CONST;
+ClutterActor *  nbtk_texture_frame_new                (ClutterTexture   *texture,
+                                                       gfloat            top,
+                                                       gfloat            right,
+                                                       gfloat            bottom,
+                                                       gfloat            left);
+void            nbtk_texture_frame_set_parent_texture (NbtkTextureFrame *frame,
+                                                       ClutterTexture   *texture);
+ClutterTexture *nbtk_texture_frame_get_parent_texture (NbtkTextureFrame *frame);
+void            nbtk_texture_frame_set_frame          (NbtkTextureFrame *frame,
+                                                       gfloat            top,
+                                                       gfloat            right,
+                                                       gfloat            bottom,
+                                                       gfloat            left);
+void            nbtk_texture_frame_get_frame          (NbtkTextureFrame *frame,
+                                                       gfloat           *top,
+                                                       gfloat           *right,
+                                                       gfloat           *bottom,
+                                                       gfloat           *left);
+
+G_END_DECLS
+
+#endif /* __NBTK_TEXTURE_FRAME_H__ */

src/nbtk/nbtk-tooltip.c

@@ -0,0 +1,664 @@
+/*
+ * nbtk-tooltip.c: Plain tooltip actor
+ *
+ * Copyright 2008, 2009 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * Boston, MA 02111-1307, USA.
+ *
+ * Written by: Thomas Wood <thomas@linux.intel.com>
+ *
+ */
+
+/**
+ * SECTION:nbtk-tooltip
+ * @short_description: A tooltip widget
+ *
+ * #NbtkTooltip implements a single tooltip. It should not normally be created
+ * by the application but by the widget implementing tooltip capabilities, for
+ * example, #nbtk_button_set_tooltip().
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <glib.h>
+
+#include <clutter/clutter.h>
+
+#include "nbtk-tooltip.h"
+
+#include "nbtk-widget.h"
+#include "nbtk-private.h"
+
+enum
+{
+  PROP_0,
+
+  PROP_LABEL,
+  PROP_TIP_AREA
+};
+
+#define NBTK_TOOLTIP_GET_PRIVATE(obj)    \
+        (G_TYPE_INSTANCE_GET_PRIVATE ((obj), NBTK_TYPE_TOOLTIP, NbtkTooltipPrivate))
+
+struct _NbtkTooltipPrivate
+{
+  ClutterActor *label;
+
+  gfloat        arrow_offset;
+  gboolean      actor_below;
+
+  ClutterGeometry *tip_area;
+};
+
+G_DEFINE_TYPE (NbtkTooltip, nbtk_tooltip, NBTK_TYPE_WIDGET);
+
+static void
+nbtk_tooltip_set_property (GObject      *gobject,
+                           guint         prop_id,
+                           const GValue *value,
+                           GParamSpec   *pspec)
+{
+  NbtkTooltip *tooltip = NBTK_TOOLTIP (gobject);
+
+  switch (prop_id)
+    {
+    case PROP_LABEL:
+      nbtk_tooltip_set_label (tooltip, g_value_get_string (value));
+      break;
+
+    case PROP_TIP_AREA:
+      nbtk_tooltip_set_tip_area (tooltip, g_value_get_boxed (value));
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+nbtk_tooltip_get_property (GObject    *gobject,
+                           guint       prop_id,
+                           GValue     *value,
+                           GParamSpec *pspec)
+{
+  NbtkTooltipPrivate *priv = NBTK_TOOLTIP (gobject)->priv;
+
+  switch (prop_id)
+    {
+    case PROP_LABEL:
+      g_value_set_string (value, clutter_text_get_text (CLUTTER_TEXT (priv->label)));
+      break;
+
+    case PROP_TIP_AREA:
+      g_value_set_boxed (value, priv->tip_area);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+nbtk_tooltip_style_changed (NbtkWidget *self)
+{
+  NbtkTooltipPrivate *priv;
+  ShellThemeNode *theme_node;
+  ClutterColor color;
+  const PangoFontDescription *font;
+  gchar *font_string;
+
+  priv = NBTK_TOOLTIP (self)->priv;
+  theme_node = nbtk_widget_get_theme_node (self);
+
+  shell_theme_node_get_foreground_color (theme_node, &color);
+  clutter_text_set_color (CLUTTER_TEXT (priv->label), &color);
+
+  font = shell_theme_node_get_font (theme_node);
+  font_string = pango_font_description_to_string (font);
+  clutter_text_set_font_name (CLUTTER_TEXT (priv->label), font_string);
+  g_free (font_string);
+
+  NBTK_WIDGET_CLASS (nbtk_tooltip_parent_class)->style_changed (self);
+}
+
+static void
+nbtk_tooltip_get_preferred_width (ClutterActor *self,
+                                  gfloat       for_height,
+                                  gfloat      *min_width_p,
+                                  gfloat      *natural_width_p)
+{
+  NbtkTooltipPrivate *priv = NBTK_TOOLTIP (self)->priv;
+  ShellThemeNode *theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (self));
+  gfloat min_label_w, natural_label_w;
+  gfloat label_height, arrow_height;
+  ClutterActor *arrow_image;
+
+  shell_theme_node_adjust_for_height (theme_node, &for_height);
+
+  arrow_image = nbtk_widget_get_background_image (NBTK_WIDGET (self));
+  if (arrow_image)
+    {
+      clutter_actor_get_preferred_height (arrow_image,
+                                          -1,
+                                          NULL,
+                                          &arrow_height);
+    }
+  else
+    {
+      arrow_height = 0;
+    }
+
+  if (for_height > -1)
+    {
+      label_height = for_height - arrow_height;
+    }
+  else
+    {
+      label_height = -1;
+    }
+
+  if (priv->label)
+    {
+      clutter_actor_get_preferred_width (priv->label,
+                                         label_height,
+                                         &min_label_w,
+                                         &natural_label_w);
+    }
+  else
+    {
+      min_label_w = 0;
+      natural_label_w = 0;
+    }
+
+  shell_theme_node_adjust_preferred_width (theme_node, min_width_p, natural_width_p);
+}
+
+static void
+nbtk_tooltip_get_preferred_height (ClutterActor *self,
+                                   gfloat        for_width,
+                                   gfloat       *min_height_p,
+                                   gfloat       *natural_height_p)
+{
+  NbtkTooltipPrivate *priv = NBTK_TOOLTIP (self)->priv;
+  ShellThemeNode *theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (self));
+  gfloat arrow_height;
+  gfloat min_label_h, natural_label_h;
+  ClutterActor *arrow_image;
+
+  shell_theme_node_adjust_for_width (theme_node, &for_width);
+
+  arrow_image = nbtk_widget_get_background_image (NBTK_WIDGET (self));
+
+  if (arrow_image && !priv->actor_below)
+    {
+      clutter_actor_get_preferred_height (arrow_image,
+                                          -1,
+                                          NULL,
+                                          &arrow_height);
+    }
+  else
+    {
+      arrow_height = 0;
+    }
+
+  if (priv->label)
+    {
+      clutter_actor_get_preferred_height (priv->label,
+                                          for_width,
+                                          &min_label_h,
+                                          &natural_label_h);
+    }
+  else
+    {
+      min_label_h = 0;
+      natural_label_h = 0;
+    }
+
+  if (min_height_p)
+    *min_height_p = arrow_height + min_label_h;
+
+  if (natural_height_p)
+    *natural_height_p = arrow_height + natural_label_h;
+
+  shell_theme_node_adjust_preferred_height (theme_node, min_height_p, natural_height_p);
+}
+
+static void
+nbtk_tooltip_allocate (ClutterActor          *self,
+                       const ClutterActorBox *box,
+                       ClutterAllocationFlags flags)
+{
+  NbtkTooltipPrivate *priv = NBTK_TOOLTIP (self)->priv;
+  ShellThemeNode *theme_node = nbtk_widget_get_theme_node (NBTK_WIDGET (self));
+  ClutterActorBox content_box, child_box, arrow_box;
+  gfloat arrow_height, arrow_width;
+  ClutterActor *border_image, *arrow_image;
+
+  CLUTTER_ACTOR_CLASS (nbtk_tooltip_parent_class)->allocate (self,
+                                                             box,
+                                                             flags);
+
+  shell_theme_node_get_content_box (theme_node, box, &content_box);
+
+  arrow_image = nbtk_widget_get_background_image (NBTK_WIDGET (self));
+
+  if (arrow_image && !priv->actor_below)
+    {
+      clutter_actor_get_preferred_height (arrow_image, -1, NULL, &arrow_height);
+      clutter_actor_get_preferred_width (arrow_image, -1, NULL, &arrow_width);
+
+      arrow_box.x1 = (float) (priv->arrow_offset) - (int) (arrow_width / 2);
+      arrow_box.y1 = 0;
+      arrow_box.x2 = arrow_box.x1 + arrow_width;
+      arrow_box.y2 = arrow_box.y1 + arrow_height;
+
+      clutter_actor_allocate (arrow_image, &arrow_box, flags);
+    }
+  else
+    {
+      arrow_height = 0;
+      arrow_width = 0;
+    }
+
+  child_box.x1 = child_box.y1 = 0;
+  child_box.x2 = (box->x2 - box->x1);
+  child_box.y2 = (box->y2 - box->y1);
+
+  /* remove the space that is used by the arrow */
+  child_box.y1 += arrow_height;
+
+  border_image = nbtk_widget_get_border_image (NBTK_WIDGET (self));
+  if (border_image)
+    clutter_actor_allocate (border_image, &child_box, flags);
+
+  if (priv->label)
+    {
+      child_box = content_box;
+      child_box.y1 += arrow_height;
+
+      clutter_actor_allocate (priv->label, &child_box, flags);
+    }
+}
+
+
+static void
+nbtk_tooltip_paint (ClutterActor *self)
+{
+  ClutterActor *border_image, *arrow_image;
+  NbtkTooltipPrivate *priv = NBTK_TOOLTIP (self)->priv;
+
+  border_image = nbtk_widget_get_border_image (NBTK_WIDGET (self));
+  if (border_image)
+    clutter_actor_paint (border_image);
+
+  arrow_image = nbtk_widget_get_background_image (NBTK_WIDGET (self));
+  if (arrow_image && !priv->actor_below)
+    clutter_actor_paint (arrow_image);
+
+  clutter_actor_paint (priv->label);
+}
+
+static void
+nbtk_tooltip_map (ClutterActor *self)
+{
+  NbtkTooltipPrivate *priv = NBTK_TOOLTIP (self)->priv;
+  ClutterActor *border_image, *arrow_image;
+
+  CLUTTER_ACTOR_CLASS (nbtk_tooltip_parent_class)->map (self);
+
+  border_image = nbtk_widget_get_border_image (NBTK_WIDGET (self));
+  if (border_image)
+    clutter_actor_map (border_image);
+
+  arrow_image = nbtk_widget_get_background_image (NBTK_WIDGET (self));
+  if (arrow_image)
+    clutter_actor_map (arrow_image);
+
+  clutter_actor_map (priv->label);
+}
+
+static void
+nbtk_tooltip_unmap (ClutterActor *self)
+{
+  NbtkTooltipPrivate *priv = NBTK_TOOLTIP (self)->priv;
+  ClutterActor *border_image, *arrow_image;
+
+  CLUTTER_ACTOR_CLASS (nbtk_tooltip_parent_class)->unmap (self);
+
+  border_image = nbtk_widget_get_border_image (NBTK_WIDGET (self));
+  if (border_image)
+    clutter_actor_unmap (border_image);
+
+  arrow_image = nbtk_widget_get_background_image (NBTK_WIDGET (self));
+  if (arrow_image)
+    clutter_actor_unmap (arrow_image);
+
+  clutter_actor_unmap (priv->label);
+}
+
+static void
+nbtk_tooltip_class_init (NbtkTooltipClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
+  NbtkWidgetClass *widget_class = NBTK_WIDGET_CLASS (klass);
+  GParamSpec *pspec;
+
+  g_type_class_add_private (klass, sizeof (NbtkTooltipPrivate));
+
+  gobject_class->set_property = nbtk_tooltip_set_property;
+  gobject_class->get_property = nbtk_tooltip_get_property;
+
+  actor_class->get_preferred_width = nbtk_tooltip_get_preferred_width;
+  actor_class->get_preferred_height = nbtk_tooltip_get_preferred_height;
+  actor_class->allocate = nbtk_tooltip_allocate;
+  actor_class->paint = nbtk_tooltip_paint;
+  actor_class->map = nbtk_tooltip_map;
+  actor_class->unmap = nbtk_tooltip_unmap;
+
+  widget_class->style_changed = nbtk_tooltip_style_changed;
+
+  pspec = g_param_spec_string ("label",
+                               "Label",
+                               "Label of the tooltip",
+                               NULL, G_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_LABEL, pspec);
+
+  pspec = g_param_spec_boxed ("tip-area",
+                              "Tip Area",
+                              "Area on the stage the tooltip applies to",
+                              CLUTTER_TYPE_GEOMETRY,
+                              NBTK_PARAM_READWRITE);
+  g_object_class_install_property (gobject_class, PROP_TIP_AREA, pspec);
+}
+
+static void
+nbtk_tooltip_init (NbtkTooltip *tooltip)
+{
+  tooltip->priv = NBTK_TOOLTIP_GET_PRIVATE (tooltip);
+
+  tooltip->priv->label = g_object_new (CLUTTER_TYPE_TEXT,
+                                       "line-alignment", PANGO_ALIGN_CENTER,
+                                       "ellipsize", PANGO_ELLIPSIZE_END,
+                                       "use-markup", TRUE,
+                                       NULL);
+
+  tooltip->priv->tip_area = NULL;
+
+  clutter_actor_set_parent (CLUTTER_ACTOR (tooltip->priv->label),
+                            CLUTTER_ACTOR (tooltip));
+
+  g_object_set (tooltip, "show-on-set-parent", FALSE, NULL);
+
+  clutter_actor_set_reactive (CLUTTER_ACTOR (tooltip), FALSE);
+}
+
+static void
+nbtk_tooltip_update_position (NbtkTooltip *tooltip)
+{
+  NbtkTooltipPrivate *priv = tooltip->priv;
+  ClutterGeometry *tip_area = tooltip->priv->tip_area;
+  gfloat tooltip_w, tooltip_h, tooltip_x, tooltip_y;
+  gfloat stage_w, stage_h;
+  ClutterActor *stage;
+
+  /* ensure the tooltip with is not fixed size */
+  clutter_actor_set_size ((ClutterActor*) tooltip, -1, -1);
+
+  /* if no area set, just position ourselves top left */
+  if (!priv->tip_area)
+    {
+      clutter_actor_set_position ((ClutterActor*) tooltip, 0, 0);
+      return;
+    }
+
+  /* we need to have a style in case there are padding/border values to take into
+   * account when calculating width/height */
+  nbtk_widget_ensure_style ((NbtkWidget *) tooltip);
+
+  /* find out the tooltip's size */
+  clutter_actor_get_size ((ClutterActor*) tooltip, &tooltip_w, &tooltip_h);
+
+  /* attempt to place the tooltip */
+  tooltip_x = (int) (tip_area->x + (tip_area->width / 2) - (tooltip_w / 2));
+  tooltip_y = (int) (tip_area->y + tip_area->height);
+
+  stage = clutter_actor_get_stage ((ClutterActor *) tooltip);
+  if (!stage)
+    {
+      return;
+    }
+  clutter_actor_get_size (stage, &stage_w, &stage_h);
+
+  /* make sure the tooltip is not off screen vertically */
+  if (tooltip_w > stage_w)
+    {
+      tooltip_x = 0;
+      clutter_actor_set_width ((ClutterActor*) tooltip, stage_w);
+    }
+  else if (tooltip_x < 0)
+    {
+      tooltip_x = 0;
+    }
+  else if (tooltip_x + tooltip_w > stage_w)
+    {
+      tooltip_x = (int) (stage_w) - tooltip_w;
+    }
+
+  /* make sure the tooltip is not off screen horizontally */
+  if (tooltip_y + tooltip_h > stage_h)
+    {
+      priv->actor_below = TRUE;
+
+      /* re-query size as may have changed */
+      clutter_actor_get_preferred_height ((ClutterActor*) tooltip,
+                                          -1, NULL, &tooltip_h);
+      tooltip_y = tip_area->y - tooltip_h;
+    }
+  else
+    {
+      priv->actor_below = FALSE;
+    }
+
+  /* calculate the arrow offset */
+  priv->arrow_offset = tip_area->x + tip_area->width / 2 - tooltip_x;
+
+  clutter_actor_set_position ((ClutterActor*) tooltip, tooltip_x, tooltip_y);
+}
+
+/**
+ * nbtk_tooltip_get_label:
+ * @tooltip: a #NbtkTooltip
+ *
+ * Get the text displayed on the tooltip
+ *
+ * Returns: the text for the tooltip. This must not be freed by the application
+ */
+G_CONST_RETURN gchar *
+nbtk_tooltip_get_label (NbtkTooltip *tooltip)
+{
+  g_return_val_if_fail (NBTK_IS_TOOLTIP (tooltip), NULL);
+
+  return clutter_text_get_text (CLUTTER_TEXT (tooltip->priv->label));
+}
+
+/**
+ * nbtk_tooltip_set_label:
+ * @tooltip: a #NbtkTooltip
+ * @text: text to set the label to
+ *
+ * Sets the text displayed on the tooltip
+ */
+void
+nbtk_tooltip_set_label (NbtkTooltip *tooltip,
+                        const gchar *text)
+{
+  NbtkTooltipPrivate *priv;
+
+  g_return_if_fail (NBTK_IS_TOOLTIP (tooltip));
+
+  priv = tooltip->priv;
+
+  clutter_text_set_text (CLUTTER_TEXT (priv->label), text);
+
+  g_object_notify (G_OBJECT (tooltip), "label");
+}
+
+/**
+ * nbtk_tooltip_show:
+ * @tooltip: a #NbtkTooltip
+ *
+ * Show the tooltip relative to the associated widget.
+ */
+void
+nbtk_tooltip_show (NbtkTooltip *tooltip)
+{
+  NbtkTooltipPrivate *priv;
+  ClutterActor *parent;
+  ClutterActor *stage;
+  ClutterActor *self = CLUTTER_ACTOR (tooltip);
+  ClutterAnimation *animation;
+
+  /* make sure we're not currently already animating (e.g. hiding) */
+  animation = clutter_actor_get_animation (CLUTTER_ACTOR (tooltip));
+  if (animation)
+    clutter_animation_completed (animation);
+
+  priv = tooltip->priv;
+  parent = clutter_actor_get_parent (self);
+  stage = clutter_actor_get_stage (self);
+
+  if (!stage)
+    {
+      g_warning ("NbtkTooltip is not on any stage.");
+      return;
+    }
+
+  /* make sure we're parented on the stage */
+  if (G_UNLIKELY (parent != stage))
+    {
+      g_object_ref (self);
+      clutter_actor_unparent (self);
+      clutter_actor_set_parent (self, stage);
+      g_object_unref (self);
+      parent = stage;
+    }
+
+  /* raise the tooltip to the top */
+  clutter_container_raise_child (CLUTTER_CONTAINER (stage),
+                                 CLUTTER_ACTOR (tooltip),
+                                 NULL);
+
+  nbtk_tooltip_update_position (tooltip);
+
+  /* finally show the tooltip... */
+  CLUTTER_ACTOR_CLASS (nbtk_tooltip_parent_class)->show (self);
+
+  /* and give it some bounce! */
+  g_object_set (G_OBJECT (self),
+                "scale-center-x", priv->arrow_offset,
+                "scale-center-y", (priv->actor_below) ? clutter_actor_get_height (self) : 0,
+                NULL);
+  clutter_actor_set_scale (self, 0.0, 0.0);
+  clutter_actor_animate (self, CLUTTER_EASE_OUT_ELASTIC,
+                         500,
+                         "scale-x", 1.0,
+                         "scale-y", 1.0,
+                         NULL);
+}
+
+static void
+nbtk_tooltip_hide_complete (ClutterAnimation *animation,
+                            ClutterActor     *actor)
+{
+  CLUTTER_ACTOR_CLASS (nbtk_tooltip_parent_class)->hide (actor);
+  g_signal_handlers_disconnect_by_func (actor,
+                                        nbtk_tooltip_hide_complete,
+                                        actor);
+}
+
+/**
+ * nbtk_tooltip_hide:
+ * @tooltip: a #NbtkTooltip
+ *
+ * Hide the tooltip
+ */
+void
+nbtk_tooltip_hide (NbtkTooltip *tooltip)
+{
+  ClutterAnimation *animation;
+
+  g_return_if_fail (NBTK_TOOLTIP (tooltip));
+
+  /* make sure we're not currently already animating (e.g. hiding) */
+  animation = clutter_actor_get_animation (CLUTTER_ACTOR (tooltip));
+  if (animation)
+    clutter_animation_completed (animation);
+
+  g_object_set (G_OBJECT (tooltip),
+                "scale-center-x", tooltip->priv->arrow_offset,
+                NULL);
+  animation =
+    clutter_actor_animate (CLUTTER_ACTOR (tooltip), CLUTTER_EASE_IN_SINE,
+                           150,
+                           "scale-x", 0.0,
+                           "scale-y", 0.0,
+                           NULL);
+  g_signal_connect (animation, "completed",
+                    G_CALLBACK (nbtk_tooltip_hide_complete), tooltip);
+}
+
+/**
+ * nbtk_tooltip_set_tip_area:
+ * @tooltip: A #NbtkTooltip
+ * @area: A #ClutterGeometry
+ *
+ * Set the area on the stage that the tooltip applies to.
+ */
+void
+nbtk_tooltip_set_tip_area (NbtkTooltip           *tooltip,
+                           const ClutterGeometry *area)
+{
+  g_return_if_fail (NBTK_IS_TOOLTIP (tooltip));
+
+  if (tooltip->priv->tip_area)
+    g_boxed_free (CLUTTER_TYPE_GEOMETRY, tooltip->priv->tip_area);
+  tooltip->priv->tip_area = g_boxed_copy (CLUTTER_TYPE_GEOMETRY, area);
+
+  nbtk_tooltip_update_position (tooltip);
+}
+
+/**
+ * nbtk_tooltip_get_tip_area:
+ * @tooltip: A #NbtkTooltip
+ *
+ * Retrieve the area on the stage that the tooltip currently applies to
+ *
+ * Returns: the #ClutterGeometry, owned by the tooltip which must not be freed
+ * by the application.
+ */
+G_CONST_RETURN ClutterGeometry*
+nbtk_tooltip_get_tip_area (NbtkTooltip *tooltip)
+{
+  g_return_val_if_fail (NBTK_IS_TOOLTIP (tooltip), NULL);
+
+  return tooltip->priv->tip_area;
+}

src/nbtk/nbtk-tooltip.h

@@ -0,0 +1,79 @@
+/*
+ * nbtk-tooltip.h: Plain tooltip actor
+ *
+ * Copyright 2008, 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Written by: Thomas Wood <thomas@linux.intel.com>
+ *
+ */
+
+#if !defined(NBTK_H_INSIDE) && !defined(NBTK_COMPILATION)
+#error "Only <nbtk/nbtk.h> can be included directly.h"
+#endif
+
+#ifndef __NBTK_TOOLTIP_H__
+#define __NBTK_TOOLTIP_H__
+
+G_BEGIN_DECLS
+
+#include <nbtk/nbtk-bin.h>
+
+#define NBTK_TYPE_TOOLTIP                (nbtk_tooltip_get_type ())
+#define NBTK_TOOLTIP(obj)                (G_TYPE_CHECK_INSTANCE_CAST ((obj), NBTK_TYPE_TOOLTIP, NbtkTooltip))
+#define NBTK_IS_TOOLTIP(obj)             (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NBTK_TYPE_TOOLTIP))
+#define NBTK_TOOLTIP_CLASS(klass)        (G_TYPE_CHECK_CLASS_CAST ((klass), NBTK_TYPE_TOOLTIP, NbtkTooltipClass))
+#define NBTK_IS_TOOLTIP_CLASS(klass)     (G_TYPE_CHECK_CLASS_TYPE ((klass), NBTK_TYPE_TOOLTIP))
+#define NBTK_TOOLTIP_GET_CLASS(obj)      (G_TYPE_INSTANCE_GET_CLASS ((obj), NBTK_TYPE_TOOLTIP, NbtkTooltipClass))
+
+typedef struct _NbtkTooltip              NbtkTooltip;
+typedef struct _NbtkTooltipPrivate       NbtkTooltipPrivate;
+typedef struct _NbtkTooltipClass         NbtkTooltipClass;
+
+/**
+ * NbtkTooltip:
+ *
+ * The contents of this structure is private and should only be accessed using
+ * the provided API.
+ */
+struct _NbtkTooltip
+{
+  /*< private >*/
+  NbtkBin parent_instance;
+
+  NbtkTooltipPrivate *priv;
+};
+
+struct _NbtkTooltipClass
+{
+  NbtkBinClass parent_class;
+};
+
+GType nbtk_tooltip_get_type (void) G_GNUC_CONST;
+
+G_CONST_RETURN gchar *nbtk_tooltip_get_label (NbtkTooltip *tooltip);
+void                  nbtk_tooltip_set_label (NbtkTooltip *tooltip,
+                                              const gchar *text);
+void                  nbtk_tooltip_show      (NbtkTooltip *tooltip);
+void                  nbtk_tooltip_hide      (NbtkTooltip *tooltip);
+
+void                  nbtk_tooltip_set_tip_area (NbtkTooltip *tooltip, const ClutterGeometry *area);
+G_CONST_RETURN ClutterGeometry* nbtk_tooltip_get_tip_area (NbtkTooltip *tooltip);
+
+G_END_DECLS
+
+#endif /* __NBTK_TOOLTIP_H__ */

src/nbtk/nbtk-types.h

@@ -0,0 +1,59 @@
+/*
+ * Copyright 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#if !defined(NBTK_H_INSIDE) && !defined(NBTK_COMPILATION)
+#error "Only <nbtk/nbtk.h> can be included directly.h"
+#endif
+
+#ifndef __NBTK_TYPES_H__
+#define __NBTK_TYPES_H__
+
+#include <glib-object.h>
+#include <clutter/clutter.h>
+
+G_BEGIN_DECLS
+
+#define NBTK_TYPE_PADDING               (nbtk_padding_get_type ())
+
+/**
+ * NbtkAlignment:
+ * @NBTK_ALIGN_TOP: align to the top (vertically)
+ * @NBTK_ALIGN_RIGHT: align to the right (horizontally)
+ * @NBTK_ALIGN_BOTTOM: align to the bottom (vertically)
+ * @NBTK_ALIGN_LEFT: align to the left (horizontally)
+ * @NBTK_ALIGN_CENTER: align to the center (horizontally or vertically)
+ *
+ * The alignment values for a #NbtkBin.
+ */
+typedef enum {
+  NBTK_ALIGN_TOP,
+  NBTK_ALIGN_RIGHT,
+  NBTK_ALIGN_BOTTOM,
+  NBTK_ALIGN_LEFT,
+  NBTK_ALIGN_CENTER
+} NbtkAlignment;
+
+typedef enum {
+  NBTK_ALIGN_START,
+  NBTK_ALIGN_MIDDLE,
+  NBTK_ALIGN_END
+} NbtkAlign;
+
+G_END_DECLS
+
+#endif /* __NBTK_TYPES_H__ */

src/nbtk/nbtk-widget.h

@@ -0,0 +1,116 @@
+/*
+ * nbtk-widget.h: Base class for Nbtk actors
+ *
+ * Copyright 2007 OpenedHand
+ * Copyright 2008, 2009 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * Boston, MA 02111-1307, USA.
+ *
+ */
+
+#if !defined(NBTK_H_INSIDE) && !defined(NBTK_COMPILATION)
+#error "Only <nbtk/nbtk.h> can be included directly.h"
+#endif
+
+#ifndef __NBTK_WIDGET_H__
+#define __NBTK_WIDGET_H__
+
+#include <clutter/clutter.h>
+#include <nbtk/nbtk-types.h>
+#include <toolkit/shell-theme.h>
+#include <toolkit/shell-theme-node.h>
+
+G_BEGIN_DECLS
+
+#define NBTK_TYPE_WIDGET                 (nbtk_widget_get_type ())
+#define NBTK_WIDGET(obj)                 (G_TYPE_CHECK_INSTANCE_CAST ((obj), NBTK_TYPE_WIDGET, NbtkWidget))
+#define NBTK_IS_WIDGET(obj)              (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NBTK_TYPE_WIDGET))
+#define NBTK_WIDGET_CLASS(klass)         (G_TYPE_CHECK_CLASS_CAST ((klass), NBTK_TYPE_WIDGET, NbtkWidgetClass))
+#define NBTK_IS_WIDGET_CLASS(klass)      (G_TYPE_CHECK_CLASS_TYPE ((klass), NBTK_TYPE_WIDGET))
+#define NBTK_WIDGET_GET_CLASS(obj)       (G_TYPE_INSTANCE_GET_CLASS ((obj), NBTK_TYPE_WIDGET, NbtkWidgetClass))
+
+typedef struct _NbtkWidget               NbtkWidget;
+typedef struct _NbtkWidgetPrivate        NbtkWidgetPrivate;
+typedef struct _NbtkWidgetClass          NbtkWidgetClass;
+
+/**
+ * NbtkWidget:
+ *
+ * Base class for stylable actors. The contents of the #NbtkWidget
+ * structure are private and should only be accessed through the
+ * public API.
+ */
+struct _NbtkWidget
+{
+  /*< private >*/
+  ClutterActor parent_instance;
+
+  NbtkWidgetPrivate *priv;
+};
+
+/**
+ * NbtkWidgetClass:
+ *
+ * Base class for stylable actors.
+ */
+struct _NbtkWidgetClass
+{
+  /*< private >*/
+  ClutterActorClass parent_class;
+
+  /* vfuncs */
+  void (* draw_background) (NbtkWidget         *self);
+  void (* style_changed)   (NbtkWidget         *self);
+};
+
+GType nbtk_widget_get_type (void) G_GNUC_CONST;
+
+void                  nbtk_widget_set_style_pseudo_class (NbtkWidget   *actor,
+                                                          const gchar  *pseudo_class);
+G_CONST_RETURN gchar *nbtk_widget_get_style_pseudo_class (NbtkWidget   *actor);
+void                  nbtk_widget_set_style_class_name   (NbtkWidget   *actor,
+                                                          const gchar  *style_class);
+G_CONST_RETURN gchar *nbtk_widget_get_style_class_name   (NbtkWidget   *actor);
+void                  nbtk_widget_set_style              (NbtkWidget   *actor,
+							  const gchar  *style);
+G_CONST_RETURN gchar *nbtk_widget_get_style              (NbtkWidget   *actor);
+
+void        nbtk_widget_set_theme (NbtkWidget *actor,
+				   ShellTheme *theme);
+ShellTheme *nbtk_widget_get_theme (NbtkWidget *actor);
+
+void     nbtk_widget_set_has_tooltip (NbtkWidget *widget, gboolean has_tooltip);
+gboolean nbtk_widget_get_has_tooltip (NbtkWidget *widget);
+void     nbtk_widget_set_tooltip_text (NbtkWidget *widget, const gchar *text);
+const gchar* nbtk_widget_get_tooltip_text (NbtkWidget *widget);
+
+void nbtk_widget_show_tooltip (NbtkWidget *widget);
+void nbtk_widget_hide_tooltip (NbtkWidget *widget);
+
+void nbtk_widget_ensure_style (NbtkWidget *widget);
+
+
+/* Only to be used by sub-classes of NbtkWidget */
+void          nbtk_widget_style_changed        (NbtkWidget  *widget);
+
+ShellThemeNode *nbtk_widget_get_theme_node     (NbtkWidget  *widget);
+
+ClutterActor *nbtk_widget_get_background_image (NbtkWidget  *actor);
+ClutterActor *nbtk_widget_get_border_image     (NbtkWidget  *actor);
+void          nbtk_widget_draw_background      (NbtkWidget  *widget);
+
+G_END_DECLS
+
+#endif /* __NBTK_WIDGET_H__ */

src/shell-global.c

@@ -40,6 +40,7 @@ struct _ShellGlobal {
   
   MutterPlugin *plugin;
   ShellWM *wm;
+  const char *datadir;
   const char *imagedir;
   const char *configdir;
 
@@ -57,6 +58,7 @@ enum {
   PROP_STAGE,
   PROP_WINDOW_GROUP,
   PROP_WINDOW_MANAGER,
+  PROP_DATADIR,
   PROP_IMAGEDIR,
   PROP_CONFIGDIR,
 };
@@ -128,6 +130,9 @@ shell_global_get_property(GObject         *object,
     case PROP_WINDOW_MANAGER:
       g_value_set_object (value, global->wm);
       break;
+    case PROP_DATADIR:
+      g_value_set_string (value, global->datadir);
+      break;
     case PROP_IMAGEDIR:
       g_value_set_string (value, global->imagedir);
       break;
@@ -149,6 +154,7 @@ shell_global_init (ShellGlobal *global)
 
   if (!datadir)
     datadir = GNOME_SHELL_DATADIR;
+  global->datadir = datadir;
 
   /* We make sure imagedir ends with a '/', since the JS won't have
    * access to g_build_filename() and so will end up just
@@ -254,6 +260,13 @@ shell_global_class_init (ShellGlobalClass *klass)
                                                         "Window management interface",
                                                         SHELL_TYPE_WM,
                                                         G_PARAM_READABLE));
+  g_object_class_install_property (gobject_class,
+                                   PROP_DATADIR,
+                                   g_param_spec_string ("datadir",
+                                                        "Data directory",
+                                                        "Directory containing gnome-shell data files",
+                                                        NULL,
+                                                        G_PARAM_READABLE));
   g_object_class_install_property (gobject_class,
                                    PROP_IMAGEDIR,
                                    g_param_spec_string ("imagedir",

src/shell-panel-window.c

@@ -1,240 +0,0 @@
-#include "shell-panel-window.h"
-
-#include <gdk/gdkx.h>
-#include <X11/Xlib.h>
-
-#define PANEL_HEIGHT 25
-
-enum {
-   PROP_0,
-
-};
-
-static void shell_panel_window_finalize (GObject *object);
-static void shell_panel_window_size_request (GtkWidget *self, GtkRequisition *req);
-static void shell_panel_window_size_allocate (GtkWidget *self, GtkAllocation *allocation);
-static void shell_panel_window_realize (GtkWidget *self);
-static void shell_panel_window_show (GtkWidget *self);
-static void set_strut (ShellPanelWindow *self);
-static void on_workarea_changed (ShellPanelWindow *self);
-static void handle_new_workarea (ShellPanelWindow *self);
-static GdkFilterReturn filter_func (GdkXEvent *xevent,
-				    GdkEvent *event,
-				    gpointer data);
-
-G_DEFINE_TYPE(ShellPanelWindow, shell_panel_window, GTK_TYPE_WINDOW);
-
-struct ShellPanelWindowPrivate {
-  GtkAllocation workarea;
-  guint width;
-  guint height;
-  Atom workarea_atom;
-};
-
-static void
-shell_panel_window_class_init(ShellPanelWindowClass *klass)
-{
-    GObjectClass *gobject_class = (GObjectClass *)klass;
-    GtkWidgetClass *widget_class = (GtkWidgetClass *)klass;
-
-    gobject_class->finalize = shell_panel_window_finalize;
-    
-    widget_class->realize = shell_panel_window_realize;
-    widget_class->size_request = shell_panel_window_size_request;    
-    widget_class->size_allocate = shell_panel_window_size_allocate;
-    widget_class->show = shell_panel_window_show;
-}
-
-static void shell_panel_window_init (ShellPanelWindow *self)
-{
-  self->priv = g_new0 (ShellPanelWindowPrivate, 1);
-
-  self->priv->workarea_atom = gdk_x11_get_xatom_by_name_for_display (gdk_display_get_default (), "_NET_WORKAREA");
-  
-  gtk_window_set_type_hint (GTK_WINDOW (self), GDK_WINDOW_TYPE_HINT_DOCK);
-  gtk_window_set_focus_on_map (GTK_WINDOW (self), FALSE);
-  gdk_window_add_filter (NULL, filter_func, self);
-}
-
-static void shell_panel_window_finalize (GObject *object)
-{
-    ShellPanelWindow *self = (ShellPanelWindow*)object;
-
-    g_free (self->priv);
-    g_signal_handlers_destroy(object);
-    G_OBJECT_CLASS (shell_panel_window_parent_class)->finalize(object);
-}
-
-ShellPanelWindow* shell_panel_window_new(void) {
-    return (ShellPanelWindow*) g_object_new(SHELL_TYPE_PANEL_WINDOW, 
-        "type", GTK_WINDOW_TOPLEVEL, NULL);
-}
-
-static void
-set_strut (ShellPanelWindow *self)
-{
-  long *buf;
-  int strut_size;
-
-  strut_size = GTK_WIDGET (self)->allocation.height;
-
-  buf = g_new0 (long, 4);
-  buf[0] = 0; /* left */
-  buf[1] = 0; /* right */
-  buf[2] = 0; /* top */
-  buf[3] = strut_size; /* bottom */
-  gdk_property_change (GTK_WIDGET (self)->window, gdk_atom_intern_static_string ("_NET_WM_STRUT"),
-		       gdk_atom_intern_static_string ("CARDINAL"), 32,
-		       GDK_PROP_MODE_REPLACE,
-		       (guchar*) buf, 4);
-  g_free (buf);
-}
-
-static void
-shell_panel_window_size_request (GtkWidget *widget, GtkRequisition *requisition)
-{
-  ShellPanelWindow *self = SHELL_PANEL_WINDOW (widget);  
-  GTK_WIDGET_CLASS (shell_panel_window_parent_class)->size_request(widget, requisition);  
-  requisition->width = self->priv->width;
-  requisition->height = PANEL_HEIGHT; 
-}
-
-static void
-shell_panel_window_size_allocate (GtkWidget *widget, GtkAllocation *allocation)
-{
-  ShellPanelWindow *self = SHELL_PANEL_WINDOW (widget);
-  GTK_WIDGET_CLASS (shell_panel_window_parent_class)->size_allocate(widget, allocation);
-  if (GTK_WIDGET_REALIZED (self))
-    set_strut (self);
-}
-
-static void
-shell_panel_window_realize (GtkWidget *widget)
-{
-  ShellPanelWindow *self = SHELL_PANEL_WINDOW (widget);
-  GTK_WIDGET_CLASS (shell_panel_window_parent_class)->realize(widget);
-  set_strut (self);
-}
-
-static void
-shell_panel_window_show (GtkWidget *widget)
-{
-  ShellPanelWindow *self = SHELL_PANEL_WINDOW (widget);
-  on_workarea_changed (self);
-  GTK_WIDGET_CLASS (shell_panel_window_parent_class)->show(widget);
-}
-
-static void
-handle_new_workarea (ShellPanelWindow *self)
-{
-  GtkRequisition requisition;
-  int x, y;
-  int width;
-  int height;
-  int x_target, y_target;
-
-  gtk_widget_size_request (GTK_WIDGET (self), &requisition);
-
-  /* If we don't have a workarea, just use monitor */
-  if (self->priv->workarea.width == 0) 
-    {
-      int monitor;
-      GdkRectangle monitor_geometry;      
-      
-      monitor = gdk_screen_get_monitor_at_point (gdk_screen_get_default (),
-                                                 0, 0);
-      gdk_screen_get_monitor_geometry (gdk_screen_get_default (),
-                                       monitor, &monitor_geometry);      
-      x = monitor_geometry.x;
-      y = monitor_geometry.y;
-      width = monitor_geometry.width;
-      height = monitor_geometry.height;
-    }
-  else
-    {
-      x = self->priv->workarea.x;
-      y = self->priv->workarea.y;
-      width = self->priv->workarea.width;
-      height = self->priv->workarea.height;
-    }
-  
-  x_target = x;
-  y_target = y + height - requisition.height;
-
-  self->priv->width = width;
-  self->priv->height = height;
-  gtk_widget_set_size_request (GTK_WIDGET (self), width - x_target, PANEL_HEIGHT);
-  gtk_window_move (GTK_WINDOW (self), x_target, y_target);
-}
-
-static void
-on_workarea_changed (ShellPanelWindow *self)
-{
-  gulong bytes_after, nitems;
-  Atom type;
-  gint format;
-  guchar *data;
-  long *data32;
-  Atom workarea = gdk_x11_get_xatom_by_name_for_display (gdk_display_get_default (), "_NET_WORKAREA");
-
-  XGetWindowProperty (GDK_DISPLAY(), GDK_ROOT_WINDOW(),
-		      workarea,
-		      0, 4, FALSE, workarea,
-		      &type, &format, &nitems, &bytes_after, &data);
-  if ((format == 32) && (nitems == 4) && (bytes_after == 0))
-    {
-      int x, y, width, height;
-      data32 = (long*) data;
-      x = data32[0];
-      y = data32[1];
-      width = data32[2];
-      height = data32[3];
-      if (x == self->priv->workarea.x && y == self->priv->workarea.y 
-          && width == self->priv->workarea.width 
-          && height == self->priv->workarea.height)
-        return;
-
-      self->priv->workarea.x = x;
-      self->priv->workarea.y = y;
-      self->priv->workarea.width = width;
-      self->priv->workarea.height = height;
-
-      handle_new_workarea (self);
-    }
-  else if (nitems == 0)
-    {
-      /* We have no workarea set; assume there are no other panels at this time */
-      self->priv->workarea.x = self->priv->workarea.y = 0;
-      self->priv->workarea.width = self->priv->workarea.height = 0;
-      handle_new_workarea (self);
-    }
-  else
-    {
-      g_printerr ("unexpected return from XGetWindowProperty: %d %ld %ld\n",
-          format, nitems, bytes_after);
-    }
-}
-
-static GdkFilterReturn
-filter_func (GdkXEvent *gdk_xevent,
-	     GdkEvent *event,
-	     gpointer data)
-{
-  ShellPanelWindow *self = SHELL_PANEL_WINDOW (data);
-  GdkFilterReturn ret = GDK_FILTER_CONTINUE;
-  XEvent *xevent = (XEvent *) event;
-
-  switch (xevent->type) 
-  {
-  case PropertyNotify:
-    {
-      if (xevent->xproperty.atom != self->priv->workarea_atom)
-	break;
-      on_workarea_changed (self);
-    }
-    break;
-  default:
-    break;
-  }
-  return ret;
-}

src/shell-panel-window.h

@@ -1,35 +0,0 @@
-#ifndef __SHELL_PANEL_WINDOW_H__
-#define __SHELL_PANEL_WINDOW_H__
-
-#include <gtk/gtk.h>
-
-#define SHELL_TYPE_PANEL_WINDOW                 (shell_panel_window_get_type ())
-#define SHELL_PANEL_WINDOW(obj)                 (G_TYPE_CHECK_INSTANCE_CAST ((obj), SHELL_TYPE_PANEL_WINDOW, ShellPanelWindow))
-#define SHELL_PANEL_WINDOW_CLASS(klass)         (G_TYPE_CHECK_CLASS_CAST ((klass), SHELL_TYPE_PANEL_WINDOW, ShellPanelWindowClass))
-#define SHELL_IS_PANEL_WINDOW(obj)              (G_TYPE_CHECK_INSTANCE_TYPE ((obj), SHELL_TYPE_PANEL_WINDOW))
-#define SHELL_IS_PANEL_WINDOW_CLASS(klass)      (G_TYPE_CHECK_CLASS_TYPE ((klass), SHELL_TYPE_PANEL_WINDOW))
-#define SHELL_PANEL_WINDOW_GET_CLASS(obj)       (G_TYPE_INSTANCE_GET_CLASS ((obj), SHELL_TYPE_PANEL_WINDOW, ShellPanelWindowClass))
-
-typedef struct _ShellPanelWindow ShellPanelWindow;
-typedef struct _ShellPanelWindowClass ShellPanelWindowClass;
-
-typedef struct ShellPanelWindowPrivate ShellPanelWindowPrivate;
-
-struct _ShellPanelWindow
-{
-    GtkWindow parent;
-
-    ShellPanelWindowPrivate *priv;
-};
-
-struct _ShellPanelWindowClass
-{
-    GtkWindowClass parent_class;
-
-};
-
-GType shell_panel_window_get_type (void) G_GNUC_CONST;
-ShellPanelWindow* shell_panel_window_new(void);
-
-
-#endif /* __SHELL_PANEL_WINDOW_H__ */

src/toolkit/shell-border-image.c

@@ -0,0 +1,92 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+#include <config.h>
+
+#include "shell-border-image.h"
+
+struct _ShellBorderImage {
+  GObject parent;
+
+  char *filename;
+  int border_top;
+  int border_right;
+  int border_bottom;
+  int border_left;
+};
+
+struct _ShellBorderImageClass {
+  GObjectClass parent_class;
+
+};
+
+G_DEFINE_TYPE (ShellBorderImage, shell_border_image, G_TYPE_OBJECT)
+
+static void
+shell_border_image_finalize (GObject *object)
+{
+  ShellBorderImage *image = SHELL_BORDER_IMAGE (object);
+
+  g_free (image->filename);
+
+  G_OBJECT_CLASS (shell_border_image_parent_class)->finalize (object);
+}
+
+static void
+shell_border_image_class_init (ShellBorderImageClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = shell_border_image_finalize;
+}
+
+static void
+shell_border_image_init (ShellBorderImage *image)
+{
+}
+
+ShellBorderImage *
+shell_border_image_new (const char *filename,
+                       int         border_top,
+                       int         border_right,
+                       int         border_bottom,
+                       int         border_left)
+{
+  ShellBorderImage *image;
+
+  image = g_object_new (SHELL_TYPE_BORDER_IMAGE, NULL);
+
+  image->filename = g_strdup (filename);
+  image->border_top = border_top;
+  image->border_right = border_right;
+  image->border_bottom = border_bottom;
+  image->border_left = border_left;
+
+  return image;
+}
+
+const char *
+shell_border_image_get_filename (ShellBorderImage *image)
+{
+  g_return_val_if_fail (SHELL_IS_BORDER_IMAGE (image), NULL);
+
+  return image->filename;
+}
+
+void
+shell_border_image_get_borders (ShellBorderImage *image,
+                                int              *border_top,
+                                int              *border_right,
+                                int              *border_bottom,
+                                int              *border_left)
+{
+  g_return_if_fail (SHELL_IS_BORDER_IMAGE (image));
+
+  if (border_top)
+    *border_top = image->border_top;
+  if (border_right)
+    *border_right = image->border_right;
+  if (border_bottom)
+    *border_bottom = image->border_bottom;
+  if (border_left)
+    *border_left = image->border_left;
+}

src/toolkit/shell-border-image.h

@@ -0,0 +1,38 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+#ifndef __SHELL_BORDER_IMAGE_H__
+#define __SHELL_BORDER_IMAGE_H__
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+/* A ShellBorderImage encapsulates an image with specified unscaled borders on each edge.
+ */
+typedef struct _ShellBorderImage      ShellBorderImage;
+typedef struct _ShellBorderImageClass ShellBorderImageClass;
+
+#define SHELL_TYPE_BORDER_IMAGE             (shell_border_image_get_type ())
+#define SHELL_BORDER_IMAGE(object)          (G_TYPE_CHECK_INSTANCE_CAST ((object), SHELL_TYPE_BORDER_IMAGE, ShellBorderImage))
+#define SHELL_BORDER_IMAGE_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), SHELL_TYPE_BORDER_IMAGE, ShellBorderImageClass))
+#define SHELL_IS_BORDER_IMAGE(object)       (G_TYPE_CHECK_INSTANCE_TYPE ((object), SHELL_TYPE_BORDER_IMAGE))
+#define SHELL_IS_BORDER_IMAGE_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), SHELL_TYPE_BORDER_IMAGE))
+#define SHELL_BORDER_IMAGE_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), SHELL_TYPE_BORDER_IMAGE, ShellBorderImageClass))
+
+GType             shell_border_image_get_type          (void) G_GNUC_CONST;
+
+ShellBorderImage *shell_border_image_new (const char *filename,
+                                          int         border_top,
+                                          int         border_right,
+                                          int         border_bottom,
+                                          int         border_left);
+
+const char *shell_border_image_get_filename (ShellBorderImage *image);
+void        shell_border_image_get_borders  (ShellBorderImage *image,
+                                             int             *border_top,
+                                             int             *border_right,
+                                             int             *border_bottom,
+                                             int             *border_left);
+
+G_END_DECLS
+
+#endif /* __SHELL_BORDER_IMAGE_H__ */

src/toolkit/shell-theme-context.c

@@ -0,0 +1,218 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+#include <config.h>
+
+#include "shell-theme.h"
+#include "shell-theme-context.h"
+
+struct _ShellThemeContext {
+  GObject parent;
+
+  double resolution;
+  PangoFontDescription *font;
+  ShellThemeNode *root_node;
+  ShellTheme *theme;
+};
+
+struct _ShellThemeContextClass {
+  GObjectClass parent_class;
+};
+
+enum
+{
+  CHANGED,
+
+  LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0, };
+
+G_DEFINE_TYPE (ShellThemeContext, shell_theme_context, G_TYPE_OBJECT)
+
+static void
+shell_theme_context_finalize (GObject *object)
+{
+  ShellThemeContext *context = SHELL_THEME_CONTEXT (object);
+
+  if (context->root_node)
+    g_object_unref (context->root_node);
+  if (context->theme)
+    g_object_unref (context->theme);
+  
+  pango_font_description_free (context->font);
+
+  G_OBJECT_CLASS (shell_theme_context_parent_class)->finalize (object);
+}
+
+static void
+shell_theme_context_class_init (ShellThemeContextClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = shell_theme_context_finalize;
+
+  signals[CHANGED] =
+    g_signal_new ("changed",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_LAST,
+                  0, /* no default handler slot */
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__VOID,
+                  G_TYPE_NONE, 0);
+}
+
+static void
+shell_theme_context_init (ShellThemeContext *context)
+{
+  context->resolution = 96.;
+  context->font = pango_font_description_from_string ("sans-serif 10");
+}
+
+ShellThemeContext *
+shell_theme_context_new (void)
+{
+  ShellThemeContext *context;
+
+  context = g_object_new (SHELL_TYPE_THEME_CONTEXT, NULL);
+
+  return context;
+}
+
+static void
+on_stage_destroy (ClutterStage *stage)
+{
+  ShellThemeContext *context = shell_theme_context_get_for_stage (stage);
+
+  g_object_set_data (G_OBJECT (stage), "shell-theme-context", NULL);
+  g_object_unref (context);
+}
+
+/**
+ * shell_theme_context_get_for_stage:
+ * @stage: a #ClutterStage
+ *
+ * Gets a singleton theme context associated with the stage.
+ *
+ * Return value: (transfer none): the singleton theme context for the stage
+ */
+ShellThemeContext *
+shell_theme_context_get_for_stage (ClutterStage *stage)
+{
+  ShellThemeContext *context;
+
+  g_return_val_if_fail (CLUTTER_IS_STAGE (stage), NULL);
+
+  context = g_object_get_data (G_OBJECT (stage), "shell-theme-context");
+  if (context)
+    return context;
+
+  context = shell_theme_context_new ();
+  g_object_set_data (G_OBJECT (stage), "shell-theme-context", context);
+  g_signal_connect (stage, "destroy",
+                    G_CALLBACK (on_stage_destroy), NULL);
+
+  return context;
+}
+
+/**
+ * shell_theme_context_set_theme:
+ * @context: a #ShellThemeContext
+ *
+ * Sets the default set of theme stylesheets for the context. This theme will
+ * be used for the root node and for nodes descending from it, unless some other
+ * style is explicitely specified.
+ */
+void
+shell_theme_context_set_theme (ShellThemeContext          *context,
+                               ShellTheme                 *theme)
+{
+  g_return_if_fail (SHELL_IS_THEME_CONTEXT (context));
+  g_return_if_fail (theme == NULL || SHELL_IS_THEME (theme));
+
+  if (context->theme != theme)
+    {
+      if (context->theme)
+        g_object_unref (context->theme);
+
+      context->theme = theme;
+
+      if (context->theme)
+        g_object_ref (context->theme);
+
+      g_signal_emit (context, signals[CHANGED], 0);
+    }
+}
+
+/**
+ * shell_theme_context_get_theme:
+ * @context: a #ShellThemeContext
+ *
+ * Gets the default theme for the context. See shell_theme_context_set_theme()
+ *
+ * Return value: (transfer none): the default theme for the context
+ */
+ShellTheme *
+shell_theme_context_get_theme (ShellThemeContext *context)
+{
+  g_return_val_if_fail (SHELL_IS_THEME_CONTEXT (context), NULL);
+
+  return context->theme;
+}
+
+void
+shell_theme_context_set_resolution (ShellThemeContext *context,
+                                    double             resolution)
+{
+  g_return_if_fail (SHELL_IS_THEME_CONTEXT (context));
+
+  context->resolution = resolution;
+}
+
+double
+shell_theme_context_get_resolution (ShellThemeContext *context)
+{
+  g_return_val_if_fail (SHELL_IS_THEME_CONTEXT (context), 96.);
+
+  return context->resolution;
+}
+
+void
+shell_theme_context_set_font (ShellThemeContext          *context,
+                              const PangoFontDescription *font)
+{
+  g_return_if_fail (SHELL_IS_THEME_CONTEXT (context));
+
+  if (context->font == font)
+    return;
+
+  pango_font_description_free (context->font);
+  context->font = pango_font_description_copy (font);
+}
+
+const PangoFontDescription *
+shell_theme_context_get_font (ShellThemeContext *context)
+{
+  g_return_val_if_fail (SHELL_IS_THEME_CONTEXT (context), NULL);
+
+  return context->font;
+}
+
+/**
+ * shell_theme_context_get_root_node:
+ * @context: a #ShellThemeContext
+ *
+ * Gets the root node of the tree of theme style nodes that associated with this
+ * context. For the node tree associated with a stage, this node represents
+ * styles applied to the stage itself.
+ *
+ * Return value: (transfer none): the root node of the context's style tree
+ */
+ShellThemeNode *
+shell_theme_context_get_root_node (ShellThemeContext *context)
+{
+  if (context->root_node == NULL)
+    context->root_node = shell_theme_node_new (context, NULL, context->theme,
+                                               G_TYPE_NONE, NULL, NULL, NULL, NULL);
+
+  return context->root_node;
+}

src/toolkit/shell-theme-context.h

@@ -0,0 +1,40 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+#ifndef __SHELL_THEME_CONTEXT_H__
+#define __SHELL_THEME_CONTEXT_H__
+
+#include <clutter/clutter.h>
+#include <pango/pango.h>
+#include "shell-theme-node.h"
+
+G_BEGIN_DECLS
+
+typedef struct _ShellThemeContextClass ShellThemeContextClass;
+
+#define SHELL_TYPE_THEME_CONTEXT             (shell_theme_context_get_type ())
+#define SHELL_THEME_CONTEXT(object)          (G_TYPE_CHECK_INSTANCE_CAST ((object), SHELL_TYPE_THEME_CONTEXT, ShellThemeContext))
+#define SHELL_THEME_CONTEXT_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), SHELL_TYPE_THEME_CONTEXT, ShellThemeContextClass))
+#define SHELL_IS_THEME_CONTEXT(object)       (G_TYPE_CHECK_INSTANCE_TYPE ((object), SHELL_TYPE_THEME_CONTEXT))
+#define SHELL_IS_THEME_CONTEXT_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), SHELL_TYPE_THEME_CONTEXT))
+#define SHELL_THEME_CONTEXT_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), SHELL_TYPE_THEME_CONTEXT, ShellThemeContextClass))
+
+GType shell_theme_context_get_type (void) G_GNUC_CONST;
+
+ShellThemeContext *shell_theme_context_new           (void);
+ShellThemeContext *shell_theme_context_get_for_stage (ClutterStage *stage);
+
+void                        shell_theme_context_set_theme      (ShellThemeContext          *context,
+                                                                ShellTheme                 *theme);
+ShellTheme *                shell_theme_context_get_theme      (ShellThemeContext          *context);
+
+void                        shell_theme_context_set_resolution (ShellThemeContext          *context,
+                                                                gdouble                     resolution);
+double                      shell_theme_context_get_resolution (ShellThemeContext          *context);
+void                        shell_theme_context_set_font       (ShellThemeContext          *context,
+                                                                const PangoFontDescription *font);
+const PangoFontDescription *shell_theme_context_get_font       (ShellThemeContext          *context);
+
+ShellThemeNode *            shell_theme_context_get_root_node  (ShellThemeContext          *context);
+
+G_END_DECLS
+
+#endif /* __SHELL_THEME_CONTEXT_H__ */

src/toolkit/shell-theme-node.h

@@ -0,0 +1,143 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+#ifndef __SHELL_THEME_NODE_H__
+#define __SHELL_THEME_NODE_H__
+
+#include <clutter/clutter.h>
+#include "shell-border-image.h"
+
+G_BEGIN_DECLS
+
+typedef struct _ShellTheme          ShellTheme;
+typedef struct _ShellThemeContext   ShellThemeContext;
+
+typedef struct _ShellThemeNode      ShellThemeNode;
+typedef struct _ShellThemeNodeClass ShellThemeNodeClass;
+
+#define SHELL_TYPE_THEME_NODE              (shell_theme_node_get_type ())
+#define SHELL_THEME_NODE(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), SHELL_TYPE_THEME_NODE, ShellThemeNode))
+#define SHELL_THEME_NODE_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST ((klass),     SHELL_TYPE_THEME_NODE, ShellThemeNodeClass))
+#define SHELL_IS_THEME_NODE(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), SHELL_TYPE_THEME_NODE))
+#define SHELL_IS_THEME_NODE_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE ((klass),     SHELL_TYPE_THEME_NODE))
+#define SHELL_THEME_NODE_GET_CLASS(obj)    (G_TYPE_INSTANCE_GET_CLASS ((obj),     SHELL_TYPE_THEME_NODE, ShellThemeNodeClass))
+
+typedef enum {
+    SHELL_SIDE_TOP,
+    SHELL_SIDE_RIGHT,
+    SHELL_SIDE_BOTTOM,
+    SHELL_SIDE_LEFT
+} ShellSide;
+
+typedef enum {
+    SHELL_CORNER_TOPLEFT,
+    SHELL_CORNER_TOPRIGHT,
+    SHELL_CORNER_BOTTOMRIGHT,
+    SHELL_CORNER_BOTTOMLEFT
+} ShellCorner;
+
+/* These are the CSS values; that doesn't mean we have to implement blink... */
+typedef enum {
+    SHELL_TEXT_DECORATION_UNDERLINE    = 1 << 0,
+    SHELL_TEXT_DECORATION_OVERLINE     = 1 << 1,
+    SHELL_TEXT_DECORATION_LINE_THROUGH = 1 << 2,
+    SHELL_TEXT_DECORATION_BLINK        = 1 << 3
+} ShellTextDecoration;
+
+GType shell_theme_node_get_type (void) G_GNUC_CONST;
+
+/* An element_type of G_TYPE_NONE means this style was created for the stage
+ * actor and matches a selector element name of 'stage'
+ */
+ShellThemeNode *shell_theme_node_new (ShellThemeContext *context,
+                                      ShellThemeNode    *parent_node,   /* can be null */
+                                      ShellTheme        *theme,         /* can be null */
+                                      GType              element_type,
+                                      const char        *element_id,
+                                      const char        *element_class,
+                                      const char        *pseudo_class,
+                                      const char        *inline_style);
+
+ShellThemeNode *shell_theme_node_get_parent (ShellThemeNode *node);
+
+ShellTheme *shell_theme_node_get_theme (ShellThemeNode *node);
+
+GType       shell_theme_node_get_element_type  (ShellThemeNode *node);
+const char *shell_theme_node_get_element_id    (ShellThemeNode *node);
+const char *shell_theme_node_get_element_class (ShellThemeNode *node);
+const char *shell_theme_node_get_pseudo_class  (ShellThemeNode *node);
+
+/* Generic getters ... these are not cached so are less efficient. The other
+ * reason for adding the more specific version is that we can handle the
+ * details of the actual CSS rules, which can be complicated, especially
+ * for fonts
+ */
+gboolean shell_theme_node_get_color (ShellThemeNode *node,
+                                     const char     *property_name,
+                                     gboolean        inherit,
+                                     ClutterColor   *color);
+
+gboolean shell_theme_node_get_double (ShellThemeNode *node,
+                                      const char     *property_name,
+                                      gboolean        inherit,
+                                      double         *value);
+
+/* The length here is already resolved to pixels
+ */
+gboolean shell_theme_node_get_length (ShellThemeNode *node,
+                                      const char     *property_name,
+                                      gboolean        inherit,
+                                      gdouble        *length);
+
+/* Specific getters for particular properties: cached
+ */
+void shell_theme_node_get_background_color (ShellThemeNode *node,
+                                            ClutterColor   *color);
+void shell_theme_node_get_foreground_color (ShellThemeNode *node,
+                                            ClutterColor   *color);
+
+const char *shell_theme_node_get_background_image (ShellThemeNode *node);
+
+double shell_theme_node_get_border_width  (ShellThemeNode *node,
+                                           ShellSide       side);
+double shell_theme_node_get_border_radius (ShellThemeNode *node,
+                                           ShellCorner     corner);
+void   shell_theme_node_get_border_color  (ShellThemeNode *node,
+                                           ShellSide       side,
+                                           ClutterColor   *color);
+
+double  shell_theme_node_get_padding      (ShellThemeNode *node,
+                                           ShellSide       side);
+
+ShellTextDecoration shell_theme_node_get_text_decoration (ShellThemeNode *node);
+
+/* Font rule processing is pretty complicated, so we just hardcode it
+ * under the standard font/font-family/font-size/etc names. This means
+ * you can't have multiple separate styled fonts for a single item,
+ * but that should be OK.
+ */
+const PangoFontDescription *shell_theme_node_get_font (ShellThemeNode *node);
+
+ShellBorderImage *shell_theme_node_get_border_image (ShellThemeNode *node);
+
+/* Helpers for get_preferred_width()/get_preferred_height() ClutterActor vfuncs */
+void shell_theme_node_adjust_for_height       (ShellThemeNode  *node,
+                                               float           *for_height);
+void shell_theme_node_adjust_preferred_width  (ShellThemeNode  *node,
+                                               float           *min_width_p,
+                                               float           *natural_width_p);
+void shell_theme_node_adjust_for_width        (ShellThemeNode  *node,
+                                               float           *for_width);
+void shell_theme_node_adjust_preferred_height (ShellThemeNode  *node,
+                                               float           *min_height_p,
+                                               float           *natural_height_p);
+
+/* Helper for allocate() ClutterActor vfunc */
+void shell_theme_node_get_content_box         (ShellThemeNode        *node,
+                                               const ClutterActorBox *actor_box,
+                                               ClutterActorBox       *content_box);
+
+gboolean shell_theme_node_geometry_equal (ShellThemeNode *node,
+                                          ShellThemeNode *other);
+
+G_END_DECLS
+
+#endif /* __SHELL_THEME_NODE_H__ */

src/toolkit/shell-theme-private.h

@@ -0,0 +1,20 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+#ifndef __SHELL_THEME_PRIVATE_H__
+#define __SHELL_THEME_PRIVATE_H__
+
+#include <libcroco/libcroco.h>
+#include "shell-theme.h"
+
+G_BEGIN_DECLS
+
+GPtrArray *_shell_theme_get_matched_properties (ShellTheme       *theme,
+                                                ShellThemeNode   *node);
+
+/* Resolve an URL from the stylesheet to a filename */
+char *_shell_theme_resolve_url (ShellTheme   *theme,
+                                CRStyleSheet *base_stylesheet,
+                                const char   *url);
+
+G_END_DECLS
+
+#endif /* __SHELL_THEME_PRIVATE_H__ */

src/toolkit/shell-theme.h

@@ -0,0 +1,28 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+#ifndef __SHELL_THEME_H__
+#define __SHELL_THEME_H__
+
+#include <glib-object.h>
+
+#include "shell-theme-node.h"
+
+G_BEGIN_DECLS
+
+typedef struct _ShellThemeClass ShellThemeClass;
+
+#define SHELL_TYPE_THEME              (shell_theme_get_type ())
+#define SHELL_THEME(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), SHELL_TYPE_THEME, ShellTheme))
+#define SHELL_THEME_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST ((klass), SHELL_TYPE_THEME, ShellThemeClass))
+#define SHELL_IS_THEME(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), SHELL_TYPE_THEME))
+#define SHELL_IS_THEME_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE ((klass), SHELL_TYPE_THEME))
+#define SHELL_THEME_GET_CLASS(obj)    (G_TYPE_INSTANCE_GET_CLASS ((obj), SHELL_TYPE_THEME, ShellThemeClass))
+
+GType  shell_theme_get_type (void) G_GNUC_CONST;
+
+ShellTheme *shell_theme_new (const char *application_stylesheet,
+                             const char *theme_stylesheet,
+                             const char *default_stylesheet);
+
+G_END_DECLS
+
+#endif /* __SHELL_THEME_H__ */

src/toolkit/test-theme.c

@@ -0,0 +1,392 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+#include <clutter/clutter.h>
+#include "shell-theme.h"
+#include "shell-theme-context.h"
+#include <math.h>
+#include <string.h>
+
+static ShellThemeNode *root;
+static ShellThemeNode *group1;
+static ShellThemeNode *text1;
+static ShellThemeNode *text2;
+static ShellThemeNode *group2;
+static ShellThemeNode *text3;
+static ShellThemeNode *text4;
+static ShellThemeNode *group3;
+static ShellThemeNode *cairo_texture;
+static gboolean fail;
+
+static const char *test;
+
+static void
+assert_font (ShellThemeNode *node,
+	     const char     *node_description,
+	     const char     *expected)
+{
+  char *value = pango_font_description_to_string (shell_theme_node_get_font (node));
+
+  if (strcmp (expected, value) != 0)
+    {
+      g_print ("%s: %s.font: expected: %s, got: %s\n",
+	       test, node_description, expected, value);
+      fail = TRUE;
+    }
+
+  g_free (value);
+}
+
+static char *
+text_decoration_to_string (ShellTextDecoration decoration)
+{
+  GString *result = g_string_new (NULL);
+
+  if (decoration & SHELL_TEXT_DECORATION_UNDERLINE)
+    g_string_append(result, " underline");
+  if (decoration & SHELL_TEXT_DECORATION_OVERLINE)
+    g_string_append(result, " overline");
+  if (decoration & SHELL_TEXT_DECORATION_LINE_THROUGH)
+    g_string_append(result, " line_through");
+  if (decoration & SHELL_TEXT_DECORATION_BLINK)
+    g_string_append(result, " blink");
+
+  if (result->len > 0)
+    g_string_erase (result, 0, 1);
+  else
+    g_string_append(result, "none");
+
+  return g_string_free (result, FALSE);
+}
+
+static void
+assert_text_decoration (ShellThemeNode     *node,
+			const char         *node_description,
+			ShellTextDecoration expected)
+{
+  ShellTextDecoration value = shell_theme_node_get_text_decoration (node);
+  if (expected != value)
+    {
+      char *es = text_decoration_to_string (expected);
+      char *vs = text_decoration_to_string (value);
+
+      g_print ("%s: %s.text-decoration: expected: %s, got: %s\n",
+	       test, node_description, es, vs);
+      fail = TRUE;
+
+      g_free (es);
+      g_free (vs);
+    }
+}
+
+static void
+assert_foreground_color (ShellThemeNode *node,
+			 const char     *node_description,
+			 guint32         expected)
+{
+  ClutterColor color;
+  shell_theme_node_get_foreground_color (node, &color);
+  guint32 value = clutter_color_to_pixel (&color);
+
+  if (expected != value)
+    {
+      g_print ("%s: %s.color: expected: #%08x, got: #%08x\n",
+	       test, node_description, expected, value);
+      fail = TRUE;
+    }
+}
+
+static void
+assert_background_color (ShellThemeNode *node,
+			 const char     *node_description,
+			 guint32         expected)
+{
+  ClutterColor color;
+  shell_theme_node_get_background_color (node, &color);
+  guint32 value = clutter_color_to_pixel (&color);
+
+  if (expected != value)
+    {
+      g_print ("%s: %s.background-color: expected: #%08x, got: #%08x\n",
+	       test, node_description, expected, value);
+      fail = TRUE;
+    }
+}
+
+static const char *
+side_to_string (ShellSide side)
+{
+  switch (side)
+    {
+    case SHELL_SIDE_TOP:
+      return "top";
+    case SHELL_SIDE_RIGHT:
+      return "right";
+    case SHELL_SIDE_BOTTOM:
+      return "bottom";
+    case SHELL_SIDE_LEFT:
+      return "left";
+    }
+
+  return "<unknown>";
+}
+
+static void
+assert_border_color (ShellThemeNode *node,
+                     const char     *node_description,
+                     ShellSide       side,
+                     guint32         expected)
+{
+  ClutterColor color;
+  shell_theme_node_get_border_color (node, side, &color);
+  guint32 value = clutter_color_to_pixel (&color);
+
+  if (expected != value)
+    {
+      g_print ("%s: %s.border-%s-color: expected: #%08x, got: #%08x\n",
+	       test, node_description, side_to_string (side), expected, value);
+      fail = TRUE;
+    }
+}
+
+static void
+assert_background_image (ShellThemeNode *node,
+			 const char     *node_description,
+			 const char     *expected)
+{
+  const char *value = shell_theme_node_get_background_image (node);
+  if (expected == NULL)
+    expected = "(null)";
+  if (value == NULL)
+    value = "(null)";
+
+  if (strcmp (expected, value) != 0)
+    {
+      g_print ("%s: %s.background-image: expected: %s, got: %s\n",
+	       test, node_description, expected, value);
+      fail = TRUE;
+    }
+}
+
+#define LENGTH_EPSILON 0.001
+
+static void
+assert_length (const char     *node_description,
+	       const char     *property_description,
+	       double          expected,
+	       double          value)
+{
+  if (fabs (expected - value) > LENGTH_EPSILON)
+    {
+      g_print ("%s %s.%s: expected: %3f, got: %3f\n",
+	       test, node_description, property_description, expected, value);
+      fail = TRUE;
+    }
+}
+
+static void
+test_defaults (void)
+{
+  test = "defaults";
+  /* font comes from context */
+  assert_font (root, "stage", "sans-serif 12");
+  /* black is the default foreground color */
+  assert_foreground_color (root, "stage", 0x00000ff);
+}
+
+static void
+test_lengths (void)
+{
+  test = "lengths";
+  /* 12pt == 16px at 96dpi */
+  assert_length ("group1", "padding-top", 16.,
+		 shell_theme_node_get_padding (group1, SHELL_SIDE_TOP));
+  /* 12px == 12px */
+  assert_length ("group1", "padding-right", 12.,
+		 shell_theme_node_get_padding (group1, SHELL_SIDE_RIGHT));
+  /* 2em == 32px (with a 12pt font) */
+  assert_length ("group1", "padding-bottom", 32.,
+		 shell_theme_node_get_padding (group1, SHELL_SIDE_BOTTOM));
+  /* 1in == 72pt == 96px, at 96dpi */
+  assert_length ("group1", "padding-left", 96.,
+		 shell_theme_node_get_padding (group1, SHELL_SIDE_LEFT));
+}
+
+static void
+test_classes (void)
+{
+  test = "classes";
+  /* .special-text class overrides size and style;
+   * the ClutterTexture.special-text selector doesn't match */
+  assert_font (text1, "text1", "sans-serif Italic 32px");
+}
+
+static void
+test_type_inheritance (void)
+{
+  test = "type_inheritance";
+  /* From ClutterTexture element selector */
+  assert_length ("cairoTexture", "padding-top", 10.,
+		 shell_theme_node_get_padding (cairo_texture, SHELL_SIDE_TOP));
+  /* From ClutterCairoTexture element selector */
+  assert_length ("cairoTexture", "padding-right", 20.,
+		 shell_theme_node_get_padding (cairo_texture, SHELL_SIDE_RIGHT));
+}
+
+static void
+test_adjacent_selector (void)
+{
+  test = "adjacent_selector";
+  /* #group1 > #text1 matches text1 */
+  assert_foreground_color (text1, "text1", 0x00ff00ff);
+  /* stage > #text2 doesn't match text2 */
+  assert_foreground_color (text2, "text2", 0x000000ff);
+}
+
+static void
+test_padding (void)
+{
+  test = "padding";
+  /* Test that a 4-sided padding property assigns the right paddings to
+   * all sides */
+  assert_length ("group2", "padding-top", 1.,
+		 shell_theme_node_get_padding (group2, SHELL_SIDE_TOP));
+  assert_length ("group2", "padding-right", 2.,
+		 shell_theme_node_get_padding (group2, SHELL_SIDE_RIGHT));
+  assert_length ("group2", "padding-bottom", 3.,
+		 shell_theme_node_get_padding (group2, SHELL_SIDE_BOTTOM));
+  assert_length ("group2", "padding-left", 4.,
+		 shell_theme_node_get_padding (group2, SHELL_SIDE_LEFT));
+}
+
+static void
+test_border (void)
+{
+  test = "border";
+
+  /* group2 is defined as having a thin black border along the top three
+   * sides with rounded joins, then a square-joined green border at the
+   * botttom
+   */
+
+  assert_length ("group2", "border-top-width", 2.,
+		 shell_theme_node_get_border_width (group2, SHELL_SIDE_TOP));
+  assert_length ("group2", "border-right-width", 2.,
+		 shell_theme_node_get_border_width (group2, SHELL_SIDE_RIGHT));
+  assert_length ("group2", "border-bottom-width", 5.,
+		 shell_theme_node_get_border_width (group2, SHELL_SIDE_BOTTOM));
+  assert_length ("group2", "border-left-width", 2.,
+		 shell_theme_node_get_border_width (group2, SHELL_SIDE_LEFT));
+
+  assert_border_color (group2, "group2", SHELL_SIDE_TOP,    0x000000ff);
+  assert_border_color (group2, "group2", SHELL_SIDE_RIGHT,  0x000000ff);
+  assert_border_color (group2, "group2", SHELL_SIDE_BOTTOM, 0x0000ffff);
+  assert_border_color (group2, "group2", SHELL_SIDE_LEFT,   0x000000ff);
+
+  assert_length ("group2", "border-radius-topleft", 10.,
+		 shell_theme_node_get_border_radius (group2, SHELL_CORNER_TOPLEFT));
+  assert_length ("group2", "border-radius-topright", 10.,
+		 shell_theme_node_get_border_radius (group2, SHELL_CORNER_TOPRIGHT));
+  assert_length ("group2", "border-radius-bottomright", 0.,
+		 shell_theme_node_get_border_radius (group2, SHELL_CORNER_BOTTOMRIGHT));
+  assert_length ("group2", "border-radius-bottomleft", 0.,
+		 shell_theme_node_get_border_radius (group2, SHELL_CORNER_BOTTOMLEFT));
+}
+
+static void
+test_background (void)
+{
+  test = "background";
+  /* group1 has a background: shortcut property setting color and image */
+  assert_background_color (group1, "group1", 0xff0000ff);
+  assert_background_image (group1, "group1", "toolkit/some-background.png");
+  /* text1 inherits the background image but not the color */
+  assert_background_color (text1,  "text1",  0x00000000);
+  assert_background_image (text1,  "text1",  "toolkit/some-background.png");
+  /* text1 inherits inherits both, but then background: none overrides both */
+  assert_background_color (text2,  "text2",  0x00000000);
+  assert_background_image (text2,  "text2",  NULL);
+  /* background-image property */
+  assert_background_image (group2, "group2", "toolkit/other-background.png");
+}
+
+static void
+test_font (void)
+{
+  test = "font";
+  /* font specified with font: */
+  assert_font (group2, "group2", "serif Italic 12px");
+  /* text3 inherits and overrides individually properties */
+  assert_font (text3,  "text3",  "serif Bold Oblique Small-Caps 24px");
+}
+
+static void
+test_pseudo_class (void)
+{
+  test = "pseudo_class";
+  /* text4 has :visited and :hover pseudo-classes, so should pick up both of these */
+  assert_foreground_color (text4,   "text4",  0x888888ff);
+  assert_text_decoration  (text4,   "text4",  SHELL_TEXT_DECORATION_UNDERLINE);
+  /* :hover pseudo-class matches, but class doesn't match */
+  assert_text_decoration  (group3,  "group3", 0);
+}
+
+static void
+test_inline_style (void)
+{
+  test = "inline_style";
+  /* These properties come from the inline-style specified when creating the node */
+  assert_foreground_color (text3,   "text3",  0x00000ffff);
+  assert_length ("text3", "padding-bottom", 12.,
+		 shell_theme_node_get_padding (text3, SHELL_SIDE_BOTTOM));
+}
+
+int
+main (int argc, char **argv)
+{
+  ShellTheme *theme;
+  ShellThemeContext *context;
+
+  clutter_init (&argc, &argv);
+
+  theme = shell_theme_new ("toolkit/test-theme.css",
+			   NULL, NULL);
+
+  context = shell_theme_context_new ();
+  shell_theme_context_set_theme (context, theme);
+  shell_theme_context_set_resolution (context, 96.);
+  shell_theme_context_set_font (context,
+				pango_font_description_from_string ("sans-serif 12"));
+
+  root = shell_theme_context_get_root_node (context);
+  group1 = shell_theme_node_new (context, root, NULL,
+				 CLUTTER_TYPE_GROUP, "group1", NULL, NULL, NULL);
+  text1 = shell_theme_node_new  (context, group1, NULL,
+				 CLUTTER_TYPE_TEXT, "text1", "special-text", NULL, NULL);
+  text2 = shell_theme_node_new  (context, group1, NULL,
+				 CLUTTER_TYPE_TEXT, "text2", NULL, NULL, NULL);
+  group2 = shell_theme_node_new (context, root, NULL,
+				 CLUTTER_TYPE_GROUP, "group2", NULL, NULL, NULL);
+  text3 = shell_theme_node_new  (context, group2, NULL,
+				 CLUTTER_TYPE_TEXT, "text3", NULL, NULL,
+                                 "color: #0000ff; padding-bottom: 12px;");
+  text4 = shell_theme_node_new  (context, group2, NULL,
+				 CLUTTER_TYPE_TEXT, "text4", NULL, "visited hover", NULL);
+  group3 = shell_theme_node_new (context, group2, NULL,
+				 CLUTTER_TYPE_GROUP, "group3", NULL, "hover", NULL);
+  cairo_texture = shell_theme_node_new (context, root, NULL,
+					CLUTTER_TYPE_CAIRO_TEXTURE, "cairoTexture", NULL, NULL, NULL);
+
+  test_defaults ();
+  test_lengths ();
+  test_classes ();
+  test_type_inheritance ();
+  test_adjacent_selector ();
+  test_padding ();
+  test_border ();
+  test_background ();
+  test_font ();
+  test_pseudo_class ();
+  test_inline_style ();
+
+  return fail ? 1 : 0;
+}

src/toolkit/test-theme.css

@@ -0,0 +1,73 @@
+stage {
+}
+
+#group1 {
+    padding: 12pt;
+    padding-right: 12px;
+    padding-bottom: 2em;
+    padding-left: 1in;
+
+    background: #ff0000 url('some-background.png');
+}
+
+#text1 {
+    background-image: inherit;
+}
+
+.special-text {
+    font-size: 24pt;
+    font-style: italic;
+}
+
+ClutterTexture.special-text {
+    font-weight: bold;
+}
+
+#text2 {
+    background: inherit;
+    background: none; /* also overrides the color */
+}
+
+#group2 {
+    font: italic 12px serif;
+}
+
+#text3 {
+    font-variant: small-caps;
+    font-weight: bold;
+    font-style: oblique;
+    font-size: 200%;
+}
+
+ClutterTexture {
+    padding: 10px;
+}
+
+ClutterCairoTexture {
+    padding-right: 20px;
+}
+
+#group1 > #text1 {
+    color: #00ff00;
+}
+
+stage > #text2 {
+    color: #ff0000;
+}
+
+#group2 {
+    background-image: url('other-background.png');
+    padding: 1px 2px 3px 4px;
+
+    border: 2px solid #000000;
+    border-bottom: 5px solid #0000ff;
+    border-radius: 10px 10px 0px 0px;
+}
+
+ClutterText:hover {
+    text-decoration: underline;
+}
+
+ClutterText:visited {
+    color: #888888;
+}

tests/Makefile.am

@@ -0,0 +1,21 @@
+noinst_SCRIPTS = run-test.sh
+EXTRA_DIST = run-test.sh.in
+
+TEST_JS =					\
+	testcommon/ui.js			\
+	interactive/box-layout.js
+EXTRA_DIST += $(TEST_JS)
+
+TEST_MISC =					\
+	testcommon/test.css
+EXTRA_DIST += $(TEST_MISC)
+
+# We substitute in bindir so it works as an autostart
+# file when built in a non-system prefix
+run-test.sh: run-test.sh.in
+	$(AM_V_GEN) sed \
+	    -e "s|@GJS_JS_DIR[@]|$(GJS_JS_DIR)|" \
+	    -e "s|@GJS_JS_NATIVE_DIR[@]|$(GJS_JS_NATIVE_DIR)|" \
+	    -e "s|@MUTTER_LIB_DIR[@]|$(MUTTER_LIB_DIR)|" \
+	    -e "s|@srcdir[@]|$(srcdir)|" \
+	    $< > $@ && chmod a+x $@

tests/interactive/borders.js

@@ -0,0 +1,63 @@
+/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
+
+const Clutter = imports.gi.Clutter;
+const Nbtk = imports.gi.Nbtk;
+
+const UI = imports.testcommon.ui;
+
+UI.init();
+let stage = Clutter.Stage.get_default();
+stage.width = 600;
+stage.height = 700;
+
+let vbox = new Nbtk.BoxLayout({ vertical: true,
+				width: stage.width,
+			        height: stage.height,
+                                spacing: 20,
+                                style: 'padding: 10px; background: #ffee88;' });
+stage.add_actor(vbox);
+
+vbox.add(new Nbtk.Label({ text: "Hello World",
+                          style: 'border: 1px solid black; '
+                                 + 'padding: 5px;' }));
+
+vbox.add(new Nbtk.Label({ text: "Hello Round World",
+                          style: 'border: 3px solid green; '
+                                 + 'border-radius: 8px; '
+                                 + 'padding: 5px;' }));
+
+vbox.add(new Nbtk.Label({ text: "Hello Background",
+                          style: 'border: 3px solid green; '
+                                 + 'border-radius: 8px; '
+                                 + 'background: white; '
+                                 + 'padding: 5px;' }));
+
+vbox.add(new Nbtk.Label({ text: "Border, Padding, Content: 20px" }));
+
+let b1 = new Nbtk.BoxLayout({ vertical: true,
+                              style: 'border: 20px solid black; '
+                                     + 'background: white; '
+                                     + 'padding: 20px;' });
+vbox.add(b1);
+
+b1.add(new Nbtk.BoxLayout({ width: 20, height: 20,
+                            style: 'background: black' }));
+
+vbox.add(new Nbtk.Label({ text: "Translucent blue border, with rounding",
+                          style: 'border: 20px solid rgba(0, 0, 255, 0.2); '
+                                 + 'border-radius: 10px; '
+                                 + 'background: white; '
+                                 + 'padding: 10px;' }));
+
+vbox.add(new Nbtk.Label({ text: "Transparent border",
+                          style: 'border: 20px solid transparent; '
+                                 + 'background: white; '
+                                 + 'padding: 10px;' }));
+
+vbox.add(new Nbtk.Label({ text: "Border Image",
+                          style_class: "border-image",
+                          style: "padding: 10px;" }));
+
+stage.show();
+Clutter.main();
+stage.destroy();

tests/interactive/box-layout.js

@@ -0,0 +1,87 @@
+/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
+
+const Clutter = imports.gi.Clutter;
+const Nbtk = imports.gi.Nbtk;
+
+const UI = imports.testcommon.ui;
+
+UI.init();
+let stage = Clutter.Stage.get_default();
+
+let vbox = new Nbtk.BoxLayout({ vertical: true,
+                                width: stage.width,
+                                height: stage.height,
+                                spacing: 10,
+                                style: 'padding: 10px' });
+stage.add_actor(vbox);
+
+////////////////////////////////////////////////////////////////////////////////
+
+let colored_boxes = new Nbtk.BoxLayout({ vertical: true,
+                                         width:  200,
+                                         height: 200,
+                                         style: 'border: 2px solid black;' });
+vbox.add(colored_boxes, { x_fill: false,
+                          x_align: Nbtk.Align.MIDDLE });
+
+let b2 = new Nbtk.BoxLayout({ style: 'border: 2px solid #666666' });
+colored_boxes.add(b2, { expand: true });
+
+b2.add(new Nbtk.Label({ text: "Expand",
+                        style: 'border: 1px solid #aaaaaa; '
+                               + 'background: #ffeecc' }),
+       { expand: true });
+b2.add(new Nbtk.Label({ text: "Expand\nNo Fill",
+                        style: 'border: 1px solid #aaaaaa; '
+                               + 'background: #ccffaa' }),
+       { expand: true,
+         x_fill: false,
+         x_align: Nbtk.Align.MIDDLE,
+         y_fill: false,
+         y_align: Nbtk.Align.MIDDLE });
+
+colored_boxes.add(new Nbtk.Label({ text: "Default",
+                                   style: 'border: 1px solid #aaaaaa; '
+                                          + 'background: #cceeff' }));
+
+////////////////////////////////////////////////////////////////////////////////
+
+function createCollapsableBox(width) {
+    let b = new Nbtk.BoxLayout({ width: width,
+                                 style: 'border: 1px solid black;'
+                                        + 'font: 13px Sans;' });
+    b.add(new Nbtk.Label({ text: "Very Very Very Long",
+                           style: 'background: #ffaacc;'
+                                  + 'padding: 5px; '
+                                  + 'border: 1px solid #666666;' }),
+          { expand: true });
+    b.add(new Nbtk.Label({ text: "Very Very Long",
+                           style: 'background: #ffeecc; '
+                                  + 'padding: 5px; '
+                                  + 'border: 1px solid #666666;' }),
+          { expand: true });
+    b.add(new Nbtk.Label({ text: "Very Long",
+                           style: 'background: #ccffaa; '
+                                  + 'padding: 5px; '
+                                  + 'border: 1px solid #666666;' }),
+          { expand: true });
+    b.add(new Nbtk.Label({ text: "Short",
+                           style: 'background: #cceeff; '
+                                  + 'padding: 5px; '
+                                  + 'border: 1px solid #666666;' }),
+          { expand: true });
+
+    return b;
+}
+
+for (let width = 200; width <= 500; width += 60 ) {
+    vbox.add(createCollapsableBox (width),
+             { x_fill: false,
+               x_align: Nbtk.Align.MIDDLE });
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+
+stage.show();
+Clutter.main();

tests/interactive/css-fonts.js

@@ -0,0 +1,39 @@
+/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
+
+const Clutter = imports.gi.Clutter;
+const Nbtk = imports.gi.Nbtk;
+
+const UI = imports.testcommon.ui;
+
+UI.init();
+let stage = Clutter.Stage.get_default();
+
+let b = new Nbtk.BoxLayout({ vertical: true,
+			     width: stage.width,
+			     height: stage.height });
+stage.add_actor(b);
+
+let t;
+
+t = new Nbtk.Label({ "text": "Bold", style_class: "bold" });
+b.add(t);
+t = new Nbtk.Label({ "text": "Monospace", style_class: "monospace" });
+b.add(t);
+t = new Nbtk.Label({ "text": "Italic", style_class: "italic" });
+b.add(t);
+t = new Nbtk.Label({ "text": "Bold Italic", style_class: "bold italic" });
+b.add(t);
+t = new Nbtk.Label({ "text": "Big Italic", style_class: "big italic" });
+b.add(t);
+t = new Nbtk.Label({ "text": "Big Bold", style_class: "big bold" });
+b.add(t);
+
+let b2 = new Nbtk.BoxLayout({ vertical: true, style_class: "monospace" });
+b.add(b2);
+t = new Nbtk.Label({ "text": "Big Monospace", style_class: "big" });
+b2.add(t);
+t = new Nbtk.Label({ "text": "Italic Monospace", style_class: "italic" });
+b2.add(t);
+
+stage.show();
+Clutter.main();

tests/interactive/inline-style.js

@@ -0,0 +1,47 @@
+/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
+
+const Clutter = imports.gi.Clutter;
+const Nbtk = imports.gi.Nbtk;
+
+const UI = imports.testcommon.ui;
+
+UI.init();
+let stage = Clutter.Stage.get_default();
+
+let vbox = new Nbtk.BoxLayout({ vertical: true,
+  			        width: stage.width,
+			        height: stage.height });
+stage.add_actor(vbox);
+
+let hbox = new Nbtk.BoxLayout({ spacing: 12 });
+vbox.add(hbox);
+
+let text = new Nbtk.Label({ text: "Styled Text" });
+vbox.add (text);
+
+let size = 24;
+function update_size() {
+    text.style = 'font-size: ' + size + 'pt';
+}
+update_size();
+
+let button;
+
+button = new Nbtk.Button ({ label: 'Smaller' });
+hbox.add (button);
+button.connect('clicked', function() {
+                   size /= 1.2;
+                   update_size ();
+               });
+
+button = new Nbtk.Button ({ label: 'Bigger' });
+hbox.add (button);
+button.connect('clicked', function() {
+                   size *= 1.2;
+                   update_size ();
+               });
+
+stage.show();
+Clutter.main();
+stage.destroy();
+

tests/interactive/scrolling.js

@@ -0,0 +1,41 @@
+/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
+
+const Clutter = imports.gi.Clutter;
+const Nbtk = imports.gi.Nbtk;
+
+const UI = imports.testcommon.ui;
+
+UI.init();
+let stage = Clutter.Stage.get_default();
+
+let vbox = new Nbtk.BoxLayout({ vertical: true,
+                                width: stage.width,
+                                height: stage.height,
+                                style: "padding: 10px;" });
+stage.add_actor(vbox);
+
+let v = new Nbtk.ScrollView();
+vbox.add(v, { expand: true });
+
+let b = new Nbtk.BoxLayout({ vertical: true,
+                             style: "border: 2px solid #880000; border-radius: 10px; padding: 0px 5px;" });
+v.add_actor(b);
+
+let cc_a = "a".charCodeAt(0);
+let s = "";
+for (let i = 0; i < 26 * 3; i++) {
+    s += String.fromCharCode(cc_a + i % 26);
+
+    let t = new Nbtk.Label({ text: s,
+                             reactive: true });
+    let line = i + 1;
+    t.connect('button-press-event',
+              function() {
+                  log("Click on line " + line);
+              });
+    b.add(t);
+}
+
+stage.show();
+Clutter.main();
+stage.destroy();

tests/run-test.sh.in

@@ -0,0 +1,48 @@
+#!/bin/sh
+
+usage() {
+    echo >&2 "Usage run-test.sh [-v|--verbose] <test_js>..."
+    exit 1
+}
+
+tests=
+verbose=false
+debug=
+for arg in $@ ; do
+    case $arg in
+	-g|--debug)
+	    debug="gdb --args"
+	    ;;
+	-v|--verbose)
+	    verbose=true
+	    ;;
+	-*)
+	    usage
+	    ;;
+	*)
+	    tests="$tests $arg"
+	    ;;
+    esac
+done
+
+builddir=`dirname $0`
+builddir=`cd $builddir && pwd`
+srcdir=$builddir/@srcdir@
+srcdir=`cd $srcdir && pwd`
+
+GI_TYPELIB_PATH="@MUTTER_LIB_DIR@/mutter:$builddir/../src"
+GJS_DEBUG_OUTPUT=stderr
+$verbose || GJS_DEBUG_TOPICS="JS ERROR;JS LOG"
+GNOME_SHELL_TESTSDIR="$srcdir/"
+LD_PRELOAD="$builddir/../src/.libs/libgnome-shell.so"
+
+export GI_TYPELIB_PATH GJS_DEBUG_OUTPUT GJS_DEBUG_TOPICS GNOME_SHELL_JS GNOME_SHELL_TESTSDIR LD_PRELOAD
+
+gjs_args=
+for i in $srcdir $srcdir/../js @GJS_JS_DIR@ @GJS_JS_NATIVE_DIR@ ; do
+    gjs_args="$gjs_args -I $i"
+done
+
+for test in $tests ; do
+    $debug gjs-console $gjs_args $test || exit $?
+done

tests/testcommon/test.css

@@ -0,0 +1,53 @@
+@import "../../data/theme/gnome-shell.css";
+
+stage {
+    font: 16pt serif;
+}
+
+.red {
+    background-color: red;
+}
+
+.green {
+    background-color: green;
+}
+
+.blue {
+    background-color: blue;
+}
+
+.bold {
+    font-weight: bold;
+}
+
+.italic {
+    font-style: italic;
+}
+
+.big {
+    font-size: 150%;
+}
+
+.monospace {
+    font-family: monospace;
+}
+
+.border-image {
+    border: 15px;
+    border-image: url('border-image.png') 16;
+}
+
+NbtkButton {
+    background: #eeddbb;
+    border: 1px solid black;
+    border-radius: 8px;
+    padding: 5px;
+}
+
+NbtkButton:hover {
+    background: #ffeecc;
+}
+
+NbtkButton:active {
+    background: #ccbb99;
+}

tests/testcommon/ui.js

@@ -0,0 +1,19 @@
+/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
+
+const Clutter = imports.gi.Clutter;
+const GLib = imports.gi.GLib;
+const Nbtk = imports.gi.Nbtk;
+const Shell = imports.gi.Shell;
+
+const Environment = imports.ui.environment;
+
+function init() {
+    Clutter.init(null, null);
+    Environment.init();
+
+    let stage = Clutter.Stage.get_default();
+    let context = Shell.ThemeContext.get_for_stage (stage);
+    let stylesheetPath = GLib.getenv("GNOME_SHELL_TESTSDIR") + "/testcommon/test.css";
+    let theme = new Shell.Theme ({ application_stylesheet: stylesheetPath });
+    context.set_theme (theme);
+}

tools/build/gnome-shell.modules

@@ -7,6 +7,8 @@
       href="git://git.clutter-project.org/"/>
   <repository type="git" name="git.gnome.org"
       href="git://git.gnome.org/"/>
+  <repository type="git" name="git.moblin.org"
+      href="git://git.moblin.org"/>
 
   <autotools id="gobject-introspection">
     <branch repo="git.gnome.org" module="gobject-introspection"/>
@@ -36,6 +38,13 @@
     </dependencies>
   </autotools>
 
+  <autotools id="clutter-imcontext">
+    <branch repo="git.moblin.org" module="clutter-imcontext"/>
+    <dependencies>
+        <dep package="clutter"/>
+    </dependencies>
+  </autotools>
+
   <autotools id="gconf" autogenargs="--disable-defaults-service">
     <branch repo="git.gnome.org" module="gconf"/>
   </autotools>