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magnifier: Use PointerWatcher to poll the mouse pointer

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This gives us a more efficient method to watch the mouse pointer.

https://bugzilla.gnome.org/show_bug.cgi?id=683073
This commit is contained in:
Jasper St. Pierre 2012-08-30 16:19:32 -03:00
parent e616877fd2
commit 8aed51180f
1 changed files with 6 additions and 9 deletions
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15
js/ui/magnifier.js
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@ -12,7 +12,7 @@ const Signals = imports.signals;
const Main = imports.ui.main;
const MagnifierDBus = imports.ui.magnifierDBus;
const Params = imports.misc.params;
const PointerWatcher = imports.ui.pointerWatcher;
const MOUSE_POLL_FREQUENCY = 50;
const CROSSHAIRS_CLIP_SIZE = [100, 100];
@ -136,11 +136,8 @@ const Magnifier = new Lang.Class({
* Turn on mouse tracking, if not already doing so.
*/
startTrackingMouse: function() {
if (!this._mouseTrackingId)
this._mouseTrackingId = Mainloop.timeout_add(
MOUSE_POLL_FREQUENCY,
Lang.bind(this, this.scrollToMousePos)
);
if (!this._pointerWatch)
this._pointerWatch = PointerWatcher.getPointerWatcher().addWatch(MOUSE_POLL_FREQUENCY, Lang.bind(this, this.scrollToMousePos));
},
/**
@ -148,10 +145,10 @@ const Magnifier = new Lang.Class({
* Turn off mouse tracking, if not already doing so.
*/
stopTrackingMouse: function() {
if (this._mouseTrackingId)
Mainloop.source_remove(this._mouseTrackingId);
if (this._pointerWatch)
this._pointerWatch.remove();
this._mouseTrackingId = null;
this._pointerWatch = null;
},
/**