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Display thumbnails of recent files in the overlay mode by using GnomeThumbnailFactory to get them. Fall back to the system icon for the file type provided by GtkRecentInfo when a thumbnail is not available.

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svn path=/trunk/; revision=143
This commit is contained in:
Marina Zhurakhinskaya 2009-01-09 01:09:35 +00:00
parent 1e99f00e59
commit 849ddbd3f6
8 changed files with 105 additions and 21 deletions
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4
configure.ac
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@ -20,6 +20,10 @@ PKG_CHECK_MODULES(MUTTER_PLUGIN, gtk+-2.0 metacity-plugins gjs-gi-1.0)
PKG_CHECK_MODULES(TIDY, clutter-0.8)
PKG_CHECK_MODULES(BIG, clutter-cairo-0.8 gtk+-2.0 librsvg-2.0)
PKG_CHECK_MODULES(TRAY, gtk+-2.0)
# We require libgnomeui for generating thumbnails for recent files with GnomeThumbnailFactory.
# We'll switch to using GnomeDesktopThumbnailFactory once the branch of gnome-desktop that contains
# it becomes stable.
PKG_CHECK_MODULES(LIBGNOMEUI, libgnomeui-2.0)
# Sets GLIB_GENMARSHAL and GLIB_MKENUMS
AM_PATH_GLIB_2_0()

6
js/ui/appDisplay.js
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@ -56,11 +56,11 @@ AppDisplayItem.prototype = {
let iconTheme = Gtk.IconTheme.get_default();
let icon = new Clutter.Texture({ width: 48, height: 48});
let icon = new Clutter.Texture({ width: GenericDisplay.ITEM_DISPLAY_ICON_SIZE, height: GenericDisplay.ITEM_DISPLAY_ICON_SIZE});
let gicon = appInfo.get_icon();
let path = null;
if (gicon != null) {
let iconinfo = iconTheme.lookup_by_gicon(gicon, 48, Gtk.IconLookupFlags.NO_SVG);
let iconinfo = iconTheme.lookup_by_gicon(gicon, GenericDisplay.ITEM_DISPLAY_ICON_SIZE, Gtk.IconLookupFlags.NO_SVG);
if (iconinfo)
path = iconinfo.get_filename();
}
@ -68,6 +68,8 @@ AppDisplayItem.prototype = {
if (path) {
try {
icon.set_from_file(path);
icon.x = GenericDisplay.ITEM_DISPLAY_PADDING;
icon.y = GenericDisplay.ITEM_DISPLAY_PADDING;
} catch (e) {
// we can get an error here if the file path doesn't exist on the system
log('Error loading AppDisplayItem icon ' + e);

32
js/ui/docDisplay.js
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@ -9,6 +9,8 @@ const Shell = imports.gi.Shell;
const GenericDisplay = imports.ui.genericDisplay;
const ITEM_DISPLAY_ICON_MARGIN = 2;
/* This class represents a single display item containing information about a document.
*
* docInfo - GtkRecentInfo object containing information about the document
@ -30,8 +32,23 @@ DocDisplayItem.prototype = {
// we can possibly display tags in the space for description in the future
let description = "";
let icon = new Clutter.Texture({width: 48, height: 48});
Shell.clutter_texture_set_from_pixbuf(icon, docInfo.get_icon(48));
let icon = new Clutter.Texture();
let pixbuf = Shell.get_thumbnail_for_recent_info(docInfo);
if (pixbuf) {
// We calculate the width and height of the texture so as to preserve the aspect ratio of the thumbnail.
// Because the images generated based on thumbnails don't have an internal padding like system icons do,
// we create a slightly smaller texture and then use extra margin when positioning it.
let scalingFactor = (GenericDisplay.ITEM_DISPLAY_ICON_SIZE - ITEM_DISPLAY_ICON_MARGIN * 2) / Math.max(pixbuf.get_width(), pixbuf.get_height());
icon.set_width(Math.ceil(pixbuf.get_width() * scalingFactor));
icon.set_height(Math.ceil(pixbuf.get_height() * scalingFactor));
Shell.clutter_texture_set_from_pixbuf(icon, pixbuf);
icon.x = GenericDisplay.ITEM_DISPLAY_PADDING + ITEM_DISPLAY_ICON_MARGIN;
icon.y = GenericDisplay.ITEM_DISPLAY_PADDING + ITEM_DISPLAY_ICON_MARGIN;
} else {
Shell.clutter_texture_set_from_pixbuf(icon, docInfo.get_icon(GenericDisplay.ITEM_DISPLAY_ICON_SIZE));
icon.x = GenericDisplay.ITEM_DISPLAY_PADDING;
icon.y = GenericDisplay.ITEM_DISPLAY_PADDING;
}
this._setItemInfo(name, description, icon);
},
@ -124,10 +141,13 @@ DocDisplay.prototype = {
// While this._allItems associative array seems to always be ordered by last added,
// as the results of this._recentManager.get_items() based on which it is constructed are,
// we should do the sorting manually because we want the order to be based on last visited.
// TODO: would it be better to store an additional array of doc ids as they are
// returned by this._recentManager.get_items() to avoid having to do this sorting?
// This function is called each time the search string is set back to '', so we are
// doing the sorting over the same items multiple times.
//
// This function is called each time the search string is set back to '' or we display
// the overlay, so we are doing the sorting over the same items multiple times if the list
// of recent items didn't change. We could store an additional array of doc ids and sort
// them once when they are returned by this._recentManager.get_items() to avoid having to do
// this sorting each time, but the sorting seems to be very fast anyway, so there is no need
// to introduce an additional class variable.
let docIds = [];
for (docId in this._allItems) {
docIds.push(docId);

15
js/ui/genericDisplay.js
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@ -20,7 +20,9 @@ const ITEM_DISPLAY_SELECTED_BACKGROUND_COLOR = new Clutter.Color();
ITEM_DISPLAY_SELECTED_BACKGROUND_COLOR.from_pixel(0x00ff0055);
const ITEM_DISPLAY_HEIGHT = 50;
const ITEM_DISPLAY_PADDING = 4;
const ITEM_DISPLAY_ICON_SIZE = 48;
const ITEM_DISPLAY_PADDING = 1;
const ITEM_DISPLAY_MARGIN = 4;
/* This is a virtual class that represents a single display item containing
* a name, a description, and an icon. It allows selecting an item and represents
@ -106,18 +108,16 @@ GenericDisplayItem.prototype = {
}
this._icon = iconActor;
this._icon.x = 0;
this._icon.y = 0;
this._group.add_actor(this._icon);
let text_width = this._availableWidth - (this._icon.width + 4);
let text_width = this._availableWidth - (ITEM_DISPLAY_ICON_SIZE + 4);
this._name = new Clutter.Label({ color: ITEM_DISPLAY_NAME_COLOR,
font_name: "Sans 14px",
width: text_width,
ellipsize: Pango.EllipsizeMode.END,
text: nameText,
x: this._icon.width + 4,
y: 0});
x: ITEM_DISPLAY_ICON_SIZE + 4,
y: ITEM_DISPLAY_PADDING});
this._group.add_actor(this._name);
this._description = new Clutter.Label({ color: ITEM_DISPLAY_DESCRIPTION_COLOR,
font_name: "Sans 12px",
@ -157,7 +157,8 @@ GenericDisplay.prototype = {
this._activatedItem = null;
this._selectedIndex = -1;
this._keepDisplayCurrent = false;
this._maxItems = this._height / (ITEM_DISPLAY_HEIGHT + ITEM_DISPLAY_PADDING);
// TODO: this should be Math.floor, but right now we get too few items if we apply it
this._maxItems = this._height / (ITEM_DISPLAY_HEIGHT + ITEM_DISPLAY_MARGIN);
this.actor = this._grid;
},

2
js/ui/overlay.js
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@ -19,7 +19,7 @@ const OVERLAY_BACKGROUND_COLOR = new Clutter.Color();
OVERLAY_BACKGROUND_COLOR.from_pixel(0x000000ff);
const SIDESHOW_PAD = 6;
const SIDESHOW_PAD_BOTTOM = 60;
const SIDESHOW_PAD_BOTTOM = 40;
const SIDESHOW_MIN_WIDTH = 250;
const SIDESHOW_SECTION_PAD = 10;
const SIDESHOW_SECTION_LABEL_PAD_BOTTOM = 6;

2
src/Makefile.am
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@ -10,6 +10,7 @@ include Makefile-tray.am
gnome_shell_cflags = \
$(MUTTER_PLUGIN_CFLAGS) \
$(LIBGNOMEUI_CFLAGS) \
-Itray \
-DGETTEXT_PACKAGE=gnome-shell \
-DGNOME_SHELL_DATADIR=\"$(pkgdatadir)\" \
@ -65,6 +66,7 @@ shell-marshal.c: Makefile shell-marshal.list
libgnome_shell_la_LDFLAGS = -avoid-version -module
libgnome_shell_la_LIBADD = \
$(MUTTER_PLUGIN_LIBS) \
$(LIBGNOMEUI_LIBS) \
libbig-1.0.la \
libtidy-1.0.la \
libtray.la

53
src/shell-global.c
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@ -8,6 +8,8 @@
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <math.h>
#include <libgnomeui-2.0/libgnomeui/gnome-thumbnail.h>
struct _ShellGlobal {
GObject parent;
@ -240,6 +242,57 @@ shell_clutter_texture_set_from_pixbuf (ClutterTexture *texture,
0, NULL);
}
static GnomeThumbnailFactory *thumbnail_factory;
/**
* shell_get_thumbnail_for_recent_info:
*
* @recent_info: #GtkRecentInfo for which to return a thumbnail
*
* Return value: #GdkPixbuf containing a thumbnail for the file described by #GtkRecentInfo
* if the thumbnail exists or can be generated, %NULL otherwise
*/
GdkPixbuf *
shell_get_thumbnail_for_recent_info(GtkRecentInfo *recent_info)
{
char *existing_thumbnail;
GdkPixbuf *pixbuf = NULL;
const gchar *uri = gtk_recent_info_get_uri (recent_info);
time_t mtime = gtk_recent_info_get_modified (recent_info);
const gchar *mime_type = gtk_recent_info_get_mime_type (recent_info);
GError *error = NULL;
if (thumbnail_factory == NULL)
thumbnail_factory = gnome_thumbnail_factory_new (GNOME_THUMBNAIL_SIZE_NORMAL);
existing_thumbnail = gnome_thumbnail_factory_lookup (thumbnail_factory, uri, mtime);
if (existing_thumbnail != NULL)
{
pixbuf = gdk_pixbuf_new_from_file(existing_thumbnail, &error);
if (error != NULL)
{
g_warning("Could not generate a pixbuf from file %s: %s", existing_thumbnail, error->message);
g_clear_error (&error);
}
}
else if (gnome_thumbnail_factory_can_thumbnail (thumbnail_factory, uri, mime_type, mtime))
{
pixbuf = gnome_thumbnail_factory_generate_thumbnail (thumbnail_factory, uri, mime_type);
if (pixbuf == NULL)
{
g_warning ("Could not generate thumbnail for %s", uri);
}
else
{
// we need to save the thumbnail so that we don't need to generate it again in the future
gnome_thumbnail_factory_save_thumbnail (thumbnail_factory, pixbuf, uri, mtime);
}
}
return pixbuf;
}
/**
* shell_global_get:
*

8
src/shell-global.h
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@ -5,6 +5,7 @@
#include <clutter/clutter.h>
#include <glib-object.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gtk/gtk.h>
G_BEGIN_DECLS
@ -30,9 +31,10 @@ struct _ShellGlobalClass
GType shell_global_get_type (void) G_GNUC_CONST;
gboolean
shell_clutter_texture_set_from_pixbuf (ClutterTexture *texture,
GdkPixbuf *pixbuf);
gboolean shell_clutter_texture_set_from_pixbuf (ClutterTexture *texture,
GdkPixbuf *pixbuf);
GdkPixbuf *shell_get_thumbnail_for_recent_info(GtkRecentInfo *recent_info);
ShellGlobal *shell_global_get (void);