diff --git a/js/js-resources.gresource.xml b/js/js-resources.gresource.xml
index c99189cfe..4206f4cbd 100644
--- a/js/js-resources.gresource.xml
+++ b/js/js-resources.gresource.xml
@@ -90,6 +90,7 @@
ui/windowAttentionHandler.js
ui/windowMenu.js
ui/windowManager.js
+ ui/wobbly.js
ui/workspace.js
ui/workspaceSwitcherPopup.js
ui/workspaceThumbnail.js
diff --git a/js/ui/windowManager.js b/js/ui/windowManager.js
index 101f9a8d7..397af8958 100644
--- a/js/ui/windowManager.js
+++ b/js/ui/windowManager.js
@@ -17,6 +17,7 @@ const Main = imports.ui.main;
const ModalDialog = imports.ui.modalDialog;
const Tweener = imports.ui.tweener;
const WindowMenu = imports.ui.windowMenu;
+const Wobbly = imports.ui.wobbly;
const SHELL_KEYBINDINGS_SCHEMA = 'org.gnome.shell.keybindings';
const MAXIMIZE_WINDOW_ANIMATION_TIME = 0.15;
@@ -811,6 +812,8 @@ const WindowManager = new Lang.Class({
gesture = new AppSwitchAction();
gesture.connect('activated', Lang.bind(this, this._switchApp));
global.stage.add_action(gesture);
+
+ this._wobblyWindows = new Wobbly.WobblyWindowManager();
},
_lookupIndex: function (windows, metaWindow) {
diff --git a/js/ui/wobbly.js b/js/ui/wobbly.js
new file mode 100644
index 000000000..ad53fc66f
--- /dev/null
+++ b/js/ui/wobbly.js
@@ -0,0 +1,130 @@
+// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
+
+const Clutter = imports.gi.Clutter;
+const Lang = imports.lang;
+const Meta = imports.gi.Meta;
+const Shell = imports.gi.Shell;
+
+function clampAbs(v, cap) {
+ if (v > cap)
+ v = cap;
+ if (v < -cap)
+ v = -cap;
+ return v;
+}
+
+const ActorWobbler = new Lang.Class({
+ Name: 'ActorWobbler',
+
+ _init: function(actor) {
+ this._actor = actor;
+ this._effect = new Shell.WobblyEffect();
+ this._actor.add_effect(this._effect);
+ this._actor._wobbler = this;
+
+ this._currentBend = 0;
+ this._currentHeightOffset = 0;
+ this._running = false;
+
+ this._allocationChangedId = this._actor.connect('allocation-changed', Lang.bind(this, this._allocationChanged));
+
+ this._timeline = new Clutter.Timeline({ duration: 100, repeat_count: -1 });
+ this._timeline.connect('new-frame', Lang.bind(this, this._newFrame));
+ this._timeline.start();
+ },
+
+ start: function() {
+ this._running = true;
+ },
+
+ stop: function() {
+ this._running = false;
+ },
+
+ _destroy: function() {
+ this._timeline.run_dispose();
+ this._timeline = null;
+
+ this._actor.disconnect(this._allocationChangedId);
+ this._actor.scale_y = 1.0;
+ this._actor.remove_effect(this._effect);
+ this._actor._wobbler = null;
+ },
+
+ _newFrame: function() {
+ this._step();
+ },
+
+ _step: function() {
+ const DAMPEN = 0.8;
+ this._currentBend *= DAMPEN;
+ if (Math.abs(this._currentBend) < 1)
+ this._currentBend = 0;
+ this._currentHeightOffset *= DAMPEN;
+ if (Math.abs(this._currentHeightOffset) < 1)
+ this._currentHeightOffset = 0;
+
+ // Cap the bend to a 100px shift.
+ const BEND_CAP = 50;
+ this._currentBend = clampAbs(this._currentBend, BEND_CAP);
+ this._effect.set_bend_x(this._currentBend);
+
+ // Cap the height change to 25px in either direction.
+ const HEIGHT_OFFSET_CAP = 25;
+ this._currentHeightOffset = clampAbs(this._currentHeightOffset, HEIGHT_OFFSET_CAP);
+ let [minHeight, natHeight] = this._actor.get_preferred_height(-1);
+ let scale = (natHeight + this._currentHeightOffset) / natHeight;
+ this._actor.scale_y = scale;
+
+ if (!this._running && this._currentBend == 0 && this._currentHeightOffset == 0)
+ this._destroy();
+ },
+
+ _allocationChanged: function(actor, box, flags) {
+ if (!this._running)
+ return;
+
+ if (this._oldX) {
+ let deltaX = box.x1 - this._oldX;
+ // Every 2px the user moves the window, we bend it by 1px.
+ this._currentBend -= deltaX / 2;
+ }
+
+ if (this._oldY) {
+ let deltaY = box.y1 - this._oldY;
+ // Every 2px the user moves the window, we scale it by 1px.
+ this._currentHeightOffset -= deltaY / 2;
+ }
+
+ this._oldX = box.x1;
+ this._oldY = box.y1;
+ },
+});
+
+const WobblyWindowManager = new Lang.Class({
+ Name: 'WobblyWindowManager',
+
+ _init: function() {
+ global.display.connect('grab-op-begin', Lang.bind(this, this._grabOpBegin));
+ global.display.connect('grab-op-end', Lang.bind(this, this._grabOpEnd));
+ },
+
+ _grabOpBegin: function(display, screen, window, op) {
+ if (op != Meta.GrabOp.MOVING)
+ return;
+
+ let actor = window.get_compositor_private();
+ if (!actor._wobbler)
+ new ActorWobbler(actor);
+ actor._wobbler.start();
+ },
+
+ _grabOpEnd: function(display, screen, window, op) {
+ if (!window)
+ return;
+
+ let actor = window.get_compositor_private();
+ if (actor._wobbler)
+ actor._wobbler.stop();
+ },
+});
diff --git a/src/Makefile.am b/src/Makefile.am
index a73eaaedf..98ec9d5ac 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -102,6 +102,7 @@ shell_public_headers_h = \
shell-util.h \
shell-window-tracker.h \
shell-wm.h \
+ shell-wobbly-effect.h \
$(NULL)
if HAVE_NETWORKMANAGER
@@ -167,6 +168,7 @@ libgnome_shell_sources = \
shell-util.c \
shell-window-tracker.c \
shell-wm.c \
+ shell-wobbly-effect.c \
$(NULL)
libgnome_shell_built_sources = \
diff --git a/src/shell-wobbly-effect.c b/src/shell-wobbly-effect.c
new file mode 100644
index 000000000..eb1d87484
--- /dev/null
+++ b/src/shell-wobbly-effect.c
@@ -0,0 +1,216 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2014 Endless Mobile
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by:
+ * Jasper St. Pierre
+ */
+
+#include "config.h"
+
+#include "shell-wobbly-effect.h"
+
+struct _ShellWobblyEffectPrivate
+{
+ int bend_x;
+
+ int tex_width, tex_height;
+ CoglPipeline *pipeline;
+
+ int tex_width_uniform;
+ int bend_x_uniform;
+};
+typedef struct _ShellWobblyEffectPrivate ShellWobblyEffectPrivate;
+
+G_DEFINE_TYPE_WITH_PRIVATE (ShellWobblyEffect, shell_wobbly_effect, CLUTTER_TYPE_OFFSCREEN_EFFECT);
+
+static const gchar *wobbly_decls =
+ "uniform int tex_width;\n"
+ "uniform int bend_x;\n";
+static const gchar *wobbly_pre =
+ "float bend_x_coord = (float(bend_x) / tex_width);\n"
+ "float interp = (1 - cos(cogl_tex_coord.y * 3.1415926)) / 2;\n"
+ "cogl_tex_coord.x -= (interp * bend_x_coord);\n";
+
+/* XXX - clutter_effect_get_paint_volume is fucking terrible
+ * and I want to kill myself */
+static gboolean
+shell_wobbly_effect_get_paint_volume (ClutterEffect *effect,
+ ClutterPaintVolume *volume)
+{
+ ShellWobblyEffect *self = SHELL_WOBBLY_EFFECT (effect);
+ ShellWobblyEffectPrivate *priv = shell_wobbly_effect_get_instance_private (self);
+
+ float cur_width;
+ cur_width = clutter_paint_volume_get_width (volume);
+ cur_width += ABS (priv->bend_x);
+ clutter_paint_volume_set_width (volume, cur_width);
+
+ /* Also modify the origin if it bends to the left. */
+ if (priv->bend_x < 0)
+ {
+ ClutterVertex origin;
+ clutter_paint_volume_get_origin (volume, &origin);
+ origin.x += priv->bend_x;
+ clutter_paint_volume_set_origin (volume, &origin);
+ }
+
+ return TRUE;
+}
+
+static gboolean
+shell_wobbly_effect_pre_paint (ClutterEffect *effect)
+{
+ ShellWobblyEffect *self = SHELL_WOBBLY_EFFECT (effect);
+ ShellWobblyEffectPrivate *priv = shell_wobbly_effect_get_instance_private (self);
+
+ if (!clutter_actor_meta_get_enabled (CLUTTER_ACTOR_META (effect)))
+ return FALSE;
+
+ /* If we're not doing any bending, we're not needed. */
+ if (priv->bend_x == 0)
+ return FALSE;
+
+ if (!clutter_feature_available (CLUTTER_FEATURE_SHADERS_GLSL))
+ {
+ /* if we don't have support for GLSL shaders then we
+ * forcibly disable the ActorMeta
+ */
+ g_warning ("Unable to use the ShellWobblyEffect: the "
+ "graphics hardware or the current GL driver does not "
+ "implement support for the GLSL shading language. The "
+ "effect will be disabled.");
+ clutter_actor_meta_set_enabled (CLUTTER_ACTOR_META (effect), FALSE);
+ return FALSE;
+ }
+
+ if (!CLUTTER_EFFECT_CLASS (shell_wobbly_effect_parent_class)->pre_paint (effect))
+ return FALSE;
+
+ ClutterOffscreenEffect *offscreen_effect = CLUTTER_OFFSCREEN_EFFECT (effect);
+ CoglObject *texture;
+
+ texture = clutter_offscreen_effect_get_texture (offscreen_effect);
+ cogl_pipeline_set_layer_texture (priv->pipeline, 0, texture);
+
+ priv->tex_width = cogl_texture_get_width (texture);
+ priv->tex_height = cogl_texture_get_height (texture);
+
+ cogl_pipeline_set_uniform_1i (priv->pipeline, priv->tex_width_uniform, priv->tex_width);
+
+ return TRUE;
+}
+
+static void
+shell_wobbly_effect_paint_target (ClutterOffscreenEffect *effect)
+{
+ ShellWobblyEffect *self = SHELL_WOBBLY_EFFECT (effect);
+ ShellWobblyEffectPrivate *priv = shell_wobbly_effect_get_instance_private (self);
+ CoglFramebuffer *fb = cogl_get_draw_framebuffer ();
+ ClutterActor *actor;
+ guint8 paint_opacity;
+
+ actor = clutter_actor_meta_get_actor (CLUTTER_ACTOR_META (effect));
+ paint_opacity = clutter_actor_get_paint_opacity (actor);
+
+ cogl_pipeline_set_color4ub (priv->pipeline,
+ paint_opacity,
+ paint_opacity,
+ paint_opacity,
+ paint_opacity);
+
+ cogl_framebuffer_draw_rectangle (fb, priv->pipeline,
+ 0, 0, priv->tex_width, priv->tex_height);
+}
+
+static void
+shell_wobbly_effect_dispose (GObject *object)
+{
+ ShellWobblyEffect *self = SHELL_WOBBLY_EFFECT (object);
+ ShellWobblyEffectPrivate *priv = shell_wobbly_effect_get_instance_private (self);
+
+ g_clear_pointer (&priv->pipeline, cogl_object_unref);
+
+ G_OBJECT_CLASS (shell_wobbly_effect_parent_class)->dispose (object);
+}
+
+static void
+shell_wobbly_effect_class_init (ShellWobblyEffectClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ ClutterEffectClass *effect_class = CLUTTER_EFFECT_CLASS (klass);
+ ClutterOffscreenEffectClass *offscreen_class = CLUTTER_OFFSCREEN_EFFECT_CLASS (klass);
+
+ offscreen_class->paint_target = shell_wobbly_effect_paint_target;
+ effect_class->pre_paint = shell_wobbly_effect_pre_paint;
+ effect_class->get_paint_volume = shell_wobbly_effect_get_paint_volume;
+ object_class->dispose = shell_wobbly_effect_dispose;
+}
+
+static void
+update_uniforms (ShellWobblyEffect *self)
+{
+ ShellWobblyEffectPrivate *priv = shell_wobbly_effect_get_instance_private (self);
+ cogl_pipeline_set_uniform_1i (priv->pipeline, priv->bend_x_uniform, priv->bend_x);
+}
+
+static void
+shell_wobbly_effect_init (ShellWobblyEffect *self)
+{
+ static CoglPipeline *pipeline_template;
+
+ ShellWobblyEffectPrivate *priv = shell_wobbly_effect_get_instance_private (self);
+
+ if (G_UNLIKELY (pipeline_template == NULL))
+ {
+ CoglSnippet *snippet;
+ CoglContext *ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
+
+ pipeline_template = cogl_pipeline_new (ctx);
+
+ snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_TEXTURE_LOOKUP, wobbly_decls, NULL);
+ cogl_snippet_set_pre (snippet, wobbly_pre);
+ cogl_pipeline_add_layer_snippet (pipeline_template, 0, snippet);
+ cogl_object_unref (snippet);
+
+ cogl_pipeline_set_layer_null_texture (pipeline_template,
+ 0, /* layer number */
+ COGL_TEXTURE_TYPE_2D);
+ }
+
+ priv->pipeline = cogl_pipeline_copy (pipeline_template);
+ priv->tex_width_uniform = cogl_pipeline_get_uniform_location (priv->pipeline, "tex_width");
+ priv->bend_x_uniform = cogl_pipeline_get_uniform_location (priv->pipeline, "bend_x");
+
+ update_uniforms (self);
+}
+
+void
+shell_wobbly_effect_set_bend_x (ShellWobblyEffect *self,
+ int bend_x)
+{
+ ShellWobblyEffectPrivate *priv = shell_wobbly_effect_get_instance_private (self);
+
+ if (priv->bend_x == bend_x)
+ return;
+
+ priv->bend_x = bend_x;
+ update_uniforms (self);
+ clutter_effect_queue_repaint (CLUTTER_EFFECT (self));
+}
diff --git a/src/shell-wobbly-effect.h b/src/shell-wobbly-effect.h
new file mode 100644
index 000000000..6c02cea96
--- /dev/null
+++ b/src/shell-wobbly-effect.h
@@ -0,0 +1,55 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2014 Endless Mobile
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by:
+ * Jasper St. Pierre
+ */
+
+#include
+
+#ifndef __SHELL_WOBBLY_EFFECT_H__
+#define __SHELL_WOBBLY_EFFECT_H__
+
+#define SHELL_TYPE_WOBBLY_EFFECT (shell_wobbly_effect_get_type ())
+#define SHELL_WOBBLY_EFFECT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), SHELL_TYPE_WOBBLY_EFFECT, ShellWobblyEffect))
+#define SHELL_WOBBLY_EFFECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), SHELL_TYPE_WOBBLY_EFFECT, ShellWobblyEffectClass))
+#define SHELL_IS_WOBBLY_EFFECT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), SHELL_TYPE_WOBBLY_EFFECT))
+#define SHELL_IS_WOBBLY_EFFECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), SHELL_TYPE_WOBBLY_EFFECT))
+#define SHELL_WOBBLY_EFFECT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), SHELL_TYPE_WOBBLY_EFFECT, ShellWobblyEffectClass))
+
+typedef struct _ShellWobblyEffect ShellWobblyEffect;
+typedef struct _ShellWobblyEffectClass ShellWobblyEffectClass;
+
+struct _ShellWobblyEffect
+{
+ ClutterOffscreenEffect parent;
+};
+
+struct _ShellWobblyEffectClass
+{
+ ClutterOffscreenEffectClass parent_class;
+};
+
+GType shell_wobbly_effect_get_type (void) G_GNUC_CONST;
+
+void shell_wobbly_effect_set_bend_x (ShellWobblyEffect *self,
+ int bend_x);
+
+#endif /* __SHELL_WOBBLY_EFFECT_H__ */