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layout: Show system background and animate on the same frame

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Previously we'd show the system background and then wait till the
main loop was idle before beginning the shell startup animation.
This resulted in one initial frame that was always just the system
background.

Now we try to get both the system background and the startup animation
begun on the same first frame.

https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1102
This commit is contained in:
Daniel van Vugt 2020-03-17 15:58:21 +08:00 committed by Florian Müllner
parent 03a46be5c7
commit 24742f3566
1 changed files with 14 additions and 14 deletions
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22
js/ui/layout.js
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@ -612,10 +612,20 @@ var LayoutManager = GObject.registerClass({
let signalId = this._systemBackground.connect('loaded', () => {
this._systemBackground.disconnect(signalId);
// We're mostly prepared for the startup animation
// now, but since a lot is going on asynchronously
// during startup, let's defer the startup animation
// until the event loop is uncontended and idle.
// This helps to prevent us from running the animation
// when the system is bogged down
const id = GLib.idle_add(GLib.PRIORITY_LOW, () => {
this._systemBackground.show();
global.stage.show();
this._prepareStartupAnimation();
return GLib.SOURCE_REMOVE;
});
GLib.Source.set_name_by_id(id, '[gnome-shell] Startup Animation');
});
}
@ -672,17 +682,7 @@ var LayoutManager = GObject.registerClass({
this.emit('startup-prepared');
// We're mostly prepared for the startup animation
// now, but since a lot is going on asynchronously
// during startup, let's defer the startup animation
// until the event loop is uncontended and idle.
// This helps to prevent us from running the animation
// when the system is bogged down
let id = GLib.idle_add(GLib.PRIORITY_LOW, () => {
this._startupAnimation();
return GLib.SOURCE_REMOVE;
});
GLib.Source.set_name_by_id(id, '[gnome-shell] this._startupAnimation');
}
_startupAnimation() {