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windowManager: Update stacking during workspace switches

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When animating workspace switches, windows on the old and new workspaces
are temporarily reparented. If windows are restacked, those windows will
thus be ignored by mutter until meta_switch_workspace_completed() resyncs
the stacking at the end of the animation.
As a result, activating a window on another workspace that is not on top
of the stack is very noticeably a two-step operation of switching workspace
and raising the window. There is a technical reason for that order[0], but
we can avoid the visible disruption by manually syncing the stack during
the switch operation.

[0] https://git.gnome.org/browse/mutter/tree/src/core/workspace.c#n590

https://bugzilla.gnome.org/show_bug.cgi?id=741680
This commit is contained in:
Florian Müllner 2014-12-17 22:57:44 +01:00
parent e0eebc90e0
commit 0257a23c31
1 changed files with 19 additions and 0 deletions
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19
js/ui/windowManager.js
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@ -618,6 +618,7 @@ const WindowManager = new Lang.Class({
this._shellwm.connect('destroy', Lang.bind(this, this._destroyWindow));
this._shellwm.connect('filter-keybinding', Lang.bind(this, this._filterKeybinding));
this._shellwm.connect('confirm-display-change', Lang.bind(this, this._confirmDisplayChange));
global.screen.connect('restacked', Lang.bind(this, this._syncStacking));
this._workspaceSwitcherPopup = null;
this._tilePreview = null;
@ -1248,6 +1249,24 @@ const WindowManager = new Lang.Class({
return !(this._allowedKeybindings[binding.get_name()] & Main.actionMode);
},
_syncStacking: function() {
if (this._switchData == null)
return;
// Update stacking of windows in inGroup (aka the workspace we are
// switching to). Windows in outGroup are about to be hidden anyway,
// so we just ignore them here.
let windows = global.get_window_actors();
let sibling = null;
for (let i = 0; i < windows.length; i++) {
if (windows[i].get_parent() != this._switchData.inGroup)
continue;
this._switchData.inGroup.set_child_above_sibling(windows[i], sibling);
sibling = windows[i];
}
},
_switchWorkspace : function(shellwm, from, to, direction) {
if (!Main.sessionMode.hasWorkspaces || !this._shouldAnimate()) {
shellwm.completed_switch_workspace();