layout: Cap each event to 15px of motion

When pressing against the bottom of the screen, we shouldn't
really take more than 15px from each event, to prevent spruious
mouse movements from opening the barrier.

https://bugzilla.gnome.org/show_bug.cgi?id=694467

diff --git a/js/ui/layout.js b/js/ui/layout.js
index ad0ed42d7f11bc9c1bf4a76fd946c459769edd8a..f8b91b73a20fefce88ff38981155b6d6a5383768 100644 (file)
--- a/js/ui/layout.js
+++ b/js/ui/layout.js
@@ -1330,7 +1330,7 @@ const PressureBarrier = new Lang.Class({
 
         this._trimBarrierEvents();
         this._barrierEvents.push(event);
-        this._currentPressure += distance;
+        this._currentPressure += Math.min(15, distance);
 
         if (this._currentPressure >= this._threshold) {
             this.emit('trigger');