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ScreenShield: animate new notifications

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Showing the new message at full size marks an abrubt change and looks
bad. Instead, gradually animate from 0px to full natural height.
Includes hacks to workaround flickering scrollbars while the animation
is in progress.

https://bugzilla.gnome.org/show_bug.cgi?id=687660
This commit is contained in:
Giovanni Campagna 2012-12-03 19:43:04 +01:00
parent b16ee1a3a6
commit 24f142df1d
1 changed files with 25 additions and 6 deletions
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31
js/ui/screenShield.js
View File

@ -106,14 +106,14 @@ const NotificationsBox = new Lang.Class({
this._musicBin = new St.Bin({ style_class: 'screen-shield-notifications-box',
visible: false });
let scrollView = new St.ScrollView({ x_fill: false, x_align: St.Align.START,
hscrollbar_policy: Gtk.PolicyType.NEVER });
this._scrollView = new St.ScrollView({ x_fill: false, x_align: St.Align.START,
hscrollbar_policy: Gtk.PolicyType.NEVER });
this._notificationBox = new St.BoxLayout({ vertical: true,
style_class: 'screen-shield-notifications-box' });
scrollView.add_actor(this._notificationBox);
this._scrollView.add_actor(this._notificationBox);
this.actor.add(this._musicBin);
this.actor.add(scrollView, { x_fill: true, x_align: St.Align.START });
this.actor.add(this._scrollView, { x_fill: true, x_align: St.Align.START });
this._sources = new Hash.Map();
Main.messageTray.getSources().forEach(Lang.bind(this, function(source) {
@ -239,7 +239,7 @@ const NotificationsBox = new Lang.Class({
(source.unseenCount > (musicNotification ? 1 : 0));
},
_sourceAdded: function(tray, source, dontUpdateVisibility) {
_sourceAdded: function(tray, source, initial) {
// Ignore transient sources
if (source.isTransient)
return;
@ -286,8 +286,27 @@ const NotificationsBox = new Lang.Class({
this._sources.set(source, obj);
if (!dontUpdateVisibility)
if (!initial) {
// block scrollbars while animating, if they're not needed now
let boxHeight = this._notificationBox.height;
if (this._scrollView.height >= boxHeight)
this._scrollView.vscrollbar_policy = Gtk.PolicyType.NEVER;
let widget = obj.sourceBox;
let [, natHeight] = widget.get_preferred_height(-1);
widget.height = 0;
Tweener.addTween(widget,
{ height: natHeight,
transition: 'easeOutQuad',
time: 0.25,
onComplete: function() {
this._scrollView.vscrollbar_policy = Gtk.PolicyType.AUTOMATIC;
widget.set_height(-1);
},
onCompleteScope: this
});
this._updateVisibility();
}
},
_titleChanged: function(source, obj) {