gnome-shell/js/ui/workspaceThumbnail.js
Owen W. Taylor 914e5d30c7 workpaceThumbnail: Fix accidental propagation of button releases
A right click was propagating through to the parent actor meaning
that a right click would activate the workspace twice and leave the
overview instead of just switching to it.

https://bugzilla.gnome.org/show_bug.cgi?id=641973
2011-02-11 12:14:27 -05:00

322 lines
11 KiB
JavaScript

/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
const Clutter = imports.gi.Clutter;
const Lang = imports.lang;
const Mainloop = imports.mainloop;
const Shell = imports.gi.Shell;
const Signals = imports.signals;
const St = imports.gi.St;
const DND = imports.ui.dnd;
const Main = imports.ui.main;
const Workspace = imports.ui.workspace;
// Fraction of original screen size for thumbnails
let THUMBNAIL_SCALE = 1/8.;
function WindowClone(realWindow) {
this._init(realWindow);
}
WindowClone.prototype = {
_init : function(realWindow) {
this.actor = new Clutter.Clone({ source: realWindow.get_texture(),
reactive: true });
this.actor._delegate = this;
this.realWindow = realWindow;
this.metaWindow = realWindow.meta_window;
this._positionChangedId = this.realWindow.connect('position-changed',
Lang.bind(this, this._onPositionChanged));
this._realWindowDestroyedId = this.realWindow.connect('destroy',
Lang.bind(this, this._disconnectRealWindowSignals));
this._onPositionChanged();
this.actor.connect('button-release-event',
Lang.bind(this, this._onButtonRelease));
this.actor.connect('destroy', Lang.bind(this, this._onDestroy));
this._draggable = DND.makeDraggable(this.actor,
{ restoreOnSuccess: true,
dragActorMaxSize: Workspace.WINDOW_DND_SIZE,
dragActorOpacity: Workspace.DRAGGING_WINDOW_OPACITY });
this._draggable.connect('drag-begin', Lang.bind(this, this._onDragBegin));
this._draggable.connect('drag-end', Lang.bind(this, this._onDragEnd));
this.inDrag = false;
},
setStackAbove: function (actor) {
this._stackAbove = actor;
if (this._stackAbove == null)
this.actor.lower_bottom();
else
this.actor.raise(this._stackAbove);
},
destroy: function () {
this.actor.destroy();
},
_onPositionChanged: function() {
let rect = this.metaWindow.get_outer_rect();
this.actor.set_position(this.realWindow.x, this.realWindow.y);
},
_disconnectRealWindowSignals: function() {
if (this._positionChangedId != 0) {
this.realWindow.disconnect(this._positionChangedId);
this._positionChangedId = 0;
}
if (this._realWindowDestroyedId != 0) {
this.realWindow.disconnect(this._realWindowDestroyedId);
this._realWindowDestroyedId = 0;
}
},
_onDestroy: function() {
this._disconnectRealWindowSignals();
this.actor._delegate = null;
if (this.inDrag) {
this.emit('drag-end');
this.inDrag = false;
}
this.disconnectAll();
},
_onButtonRelease : function (actor, event) {
this.emit('selected', event.get_time());
return true;
},
_onDragBegin : function (draggable, time) {
this.inDrag = true;
this.emit('drag-begin');
},
_onDragEnd : function (draggable, time, snapback) {
this.inDrag = false;
// We may not have a parent if DnD completed successfully, in
// which case our clone will shortly be destroyed and replaced
// with a new one on the target workspace.
if (this.actor.get_parent() != null) {
if (this._stackAbove == null)
this.actor.lower_bottom();
else
this.actor.raise(this._stackAbove);
}
this.emit('drag-end');
}
};
Signals.addSignalMethods(WindowClone.prototype);
/**
* @metaWorkspace: a #Meta.Workspace
*/
function WorkspaceThumbnail(metaWorkspace) {
this._init(metaWorkspace);
}
WorkspaceThumbnail.prototype = {
_init : function(metaWorkspace) {
this.metaWorkspace = metaWorkspace;
this.actor = new St.Bin({ reactive: true,
clip_to_allocation: true,
style_class: 'workspace-thumbnail' });
this.actor._delegate = this;
this._group = new Clutter.Group();
this.actor.add_actor(this._group);
this.actor.connect('destroy', Lang.bind(this, this._onDestroy));
this.actor.connect('button-press-event', Lang.bind(this,
function(actor, event) {
return true;
}));
this.actor.connect('button-release-event', Lang.bind(this,
function(actor, event) {
this._activate();
return true;
}));
this._background = new Clutter.Clone({ source: global.background_actor });
this._group.add_actor(this._background);
this._group.set_size(THUMBNAIL_SCALE * global.screen_width, THUMBNAIL_SCALE * global.screen_height);
this._group.set_scale(THUMBNAIL_SCALE, THUMBNAIL_SCALE);
let windows = global.get_window_actors().filter(this._isMyWindow, this);
// Create clones for windows that should be visible in the Overview
this._windows = [];
for (let i = 0; i < windows.length; i++) {
if (this._isOverviewWindow(windows[i])) {
this._addWindowClone(windows[i]);
}
}
// Track window changes
this._windowAddedId = this.metaWorkspace.connect('window-added',
Lang.bind(this, this._windowAdded));
this._windowRemovedId = this.metaWorkspace.connect('window-removed',
Lang.bind(this, this._windowRemoved));
},
_lookupIndex: function (metaWindow) {
for (let i = 0; i < this._windows.length; i++) {
if (this._windows[i].metaWindow == metaWindow) {
return i;
}
}
return -1;
},
syncStacking: function(stackIndices) {
this._windows.sort(function (a, b) { return stackIndices[a.metaWindow.get_stable_sequence()] - stackIndices[b.metaWindow.get_stable_sequence()]; });
for (let i = 0; i < this._windows.length; i++) {
let clone = this._windows[i];
let metaWindow = clone.metaWindow;
if (i == 0) {
clone.setStackAbove(this._background);
} else {
let previousClone = this._windows[i - 1];
clone.setStackAbove(previousClone.actor);
}
}
},
_windowRemoved : function(metaWorkspace, metaWin) {
let win = metaWin.get_compositor_private();
// find the position of the window in our list
let index = this._lookupIndex (metaWin);
if (index == -1)
return;
let clone = this._windows[index];
this._windows.splice(index, 1);
clone.destroy();
},
_windowAdded : function(metaWorkspace, metaWin) {
if (this.leavingOverview)
return;
let win = metaWin.get_compositor_private();
if (!win) {
// Newly-created windows are added to a workspace before
// the compositor finds out about them...
Mainloop.idle_add(Lang.bind(this,
function () {
if (this.actor && metaWin.get_compositor_private())
this._windowAdded(metaWorkspace, metaWin);
return false;
}));
return;
}
if (!this._isOverviewWindow(win))
return;
let clone = this._addWindowClone(win);
},
destroy : function() {
this.actor.destroy();
},
_onDestroy: function(actor) {
this.metaWorkspace.disconnect(this._windowAddedId);
this.metaWorkspace.disconnect(this._windowRemovedId);
this._windows = [];
this.actor = null;
},
// Tests if @win belongs to this workspaces
_isMyWindow : function (win) {
return win.get_workspace() == this.metaWorkspace.index() ||
(win.get_meta_window() && win.get_meta_window().is_on_all_workspaces());
},
// Tests if @win should be shown in the Overview
_isOverviewWindow : function (win) {
let tracker = Shell.WindowTracker.get_default();
return tracker.is_window_interesting(win.get_meta_window());
},
// Create a clone of a (non-desktop) window and add it to the window list
_addWindowClone : function(win) {
let clone = new WindowClone(win);
clone.connect('selected',
Lang.bind(this, this._activate));
clone.connect('drag-begin',
Lang.bind(this, function(clone) {
Main.overview.beginWindowDrag();
}));
clone.connect('drag-end',
Lang.bind(this, function(clone) {
Main.overview.endWindowDrag();
}));
this._group.add_actor(clone.actor);
this._windows.push(clone);
return clone;
},
_activate : function (clone, time) {
// a click on the already current workspace should go back to the main view
if (this.metaWorkspace == global.screen.get_active_workspace())
Main.overview.hide();
else
this.metaWorkspace.activate(time);
},
// Draggable target interface
handleDragOver : function(source, actor, x, y, time) {
if (source.realWindow)
return DND.DragMotionResult.MOVE_DROP;
if (source.shellWorkspaceLaunch)
return DND.DragMotionResult.COPY_DROP;
return DND.DragMotionResult.CONTINUE;
},
acceptDrop : function(source, actor, x, y, time) {
if (source.realWindow) {
let win = source.realWindow;
if (this._isMyWindow(win))
return false;
let metaWindow = win.get_meta_window();
metaWindow.change_workspace_by_index(this.metaWorkspace.index(),
false, // don't create workspace
time);
return true;
} else if (source.shellWorkspaceLaunch) {
source.shellWorkspaceLaunch({ workspace: this.metaWorkspace,
timestamp: time });
return true;
}
return false;
}
};
Signals.addSignalMethods(WorkspaceThumbnail.prototype);