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appDisplay: Use ::paint handler to set up spring animation

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The animation needs the icons' final positions, so we currently defer
it to a ::notify::allocation handler; however as starting the animation
during an allocation cycle would trigger a Clutter warning, it is
further deferred to a MetaLater. While this usually works, it is possible
that the allocation is already valid when we connect the signal, in which
case the animation is triggered at a later unexpected time. Switch to
a more robust ::paint handler instead, which also allows us to get rid
of the double-delay.

https://bugzilla.gnome.org/show_bug.cgi?id=736148
This commit is contained in:
Florian Müllner 2017-06-02 04:22:36 +02:00
parent 6c9a7ce84e
commit c67eabaf62
1 changed files with 4 additions and 11 deletions
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15
js/ui/appDisplay.js
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@ -219,17 +219,10 @@ var BaseAppView = new Lang.Class({
}
if (animationDirection == IconGrid.AnimationDirection.IN) {
let toAnimate = this._grid.actor.connect('notify::allocation', Lang.bind(this,
function() {
this._grid.actor.disconnect(toAnimate);
// We need to hide the grid temporary to not flash it
// for a frame
this._grid.actor.opacity = 0;
Meta.later_add(Meta.LaterType.BEFORE_REDRAW,
Lang.bind(this, function() {
this._doSpringAnimation(animationDirection)
}));
}));
let id = this._grid.actor.connect('paint', () => {
this._grid.actor.disconnect(id);
this._doSpringAnimation(animationDirection);
});
} else {
this._doSpringAnimation(animationDirection);
}