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overviewControls: Use a custom layout to catch all geometry changes

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We currently update workspaces geometry when we are notified about
allocation changes of the overview group; however as the geometry
is based on stage coordinates, we miss notifications when the
allocation relative to the parent is unchanged, which happens when
the primary monitor's position changes but not its resolution.
Use a custom layout manager to give us a signal that is emitted
reliably.

https://bugzilla.gnome.org/show_bug.cgi?id=708009
This commit is contained in:
Florian Müllner 2013-09-13 09:34:13 +02:00
parent 662cb9e2a3
commit df09109d81
1 changed files with 14 additions and 2 deletions
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16
js/ui/overviewControls.js
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@ -504,6 +504,17 @@ const MessagesIndicator = new Lang.Class({
}
});
const ControlsLayout = new Lang.Class({
Name: 'ControlsLayout',
Extends: Clutter.BinLayout,
Signals: { 'allocation-changed': { flags: GObject.SignalFlags.RUN_LAST } },
vfunc_allocate: function(container, box, flags) {
this.parent(container, box, flags);
this.emit('allocation-changed');
}
});
const ControlsManager = new Lang.Class({
Name: 'ControlsManager',
@ -524,7 +535,8 @@ const ControlsManager = new Lang.Class({
this._indicator = new MessagesIndicator(this.viewSelector);
this.indicatorActor = this._indicator.actor;
this.actor = new St.Widget({ layout_manager: new Clutter.BinLayout(),
let layout = new ControlsLayout();
this.actor = new St.Widget({ layout_manager: layout,
reactive: true,
x_expand: true, y_expand: true,
clip_to_allocation: true });
@ -539,7 +551,7 @@ const ControlsManager = new Lang.Class({
expand: true });
this._group.add_actor(this._thumbnailsSlider.actor);
this._group.connect('notify::allocation', Lang.bind(this, this._updateWorkspacesGeometry));
layout.connect('allocation-changed', Lang.bind(this, this._updateWorkspacesGeometry));
Main.overview.connect('showing', Lang.bind(this, this._updateSpacerVisibility));
Main.overview.connect('item-drag-begin', Lang.bind(this,