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osdWindow: Check monitor validity before updating

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When a monitor is removed, the OsdWindow for that monitor may process
the monitors-changed signal before OsdWindowManager does (which will
remove the OSD). If that happens, we will currently try to access
an invalid monitor; check for this to avoid a couple of warning.
This commit is contained in:
Florian Müllner 2014-05-03 21:12:29 +02:00
parent 011fef4b2b
commit ef04a9d1ed
1 changed files with 2 additions and 0 deletions
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2
js/ui/osdWindow.js
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@ -192,6 +192,8 @@ const OsdWindow = new Lang.Class({
_monitorsChanged: function() {
/* assume 110x110 on a 640x480 display and scale from there */
let monitor = Main.layoutManager.monitors[this._monitorIndex];
if (!monitor)
return; // we are about to be removed
let scalew = monitor.width / 640.0;
let scaleh = monitor.height / 480.0;