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screenShield: add initial functionality

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We are replacing the gnome-screensaver module with with a screen shield
that is part of gnome-shell.

This patch fades out the screen on idle and shows a shield with a background
image when there is activity again. The shield can be removed with a key or
button press.

https://bugzilla.gnome.org/show_bug.cgi?id=619955
This commit is contained in:
Marina Zhurakhinskaya
2012-02-06 17:28:48 -05:00
committed by Giovanni Campagna
parent 8970e17911
commit 4e6fa56c87
6 changed files with 131 additions and 12 deletions
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34
js/ui/lightbox.js
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@ -8,6 +8,8 @@ const St = imports.gi.St;
const Params = imports.misc.params;
const Tweener = imports.ui.tweener;
const DEFAULT_FADE_FACTOR = 0.4;
/**
* Lightbox:
* @container: parent Clutter.Container
@ -15,7 +17,8 @@ const Tweener = imports.ui.tweener;
* - inhibitEvents: whether to inhibit events for @container
* - width: shade actor width
* - height: shade actor height
* - fadeTime: seconds used to fade in/out
* - fadeInTime: seconds used to fade in
* - fadeOutTime: seconds used to fade out
*
* Lightbox creates a dark translucent "shade" actor to hide the
* contents of @container, and allows you to specify particular actors
@ -38,12 +41,16 @@ const Lightbox = new Lang.Class({
params = Params.parse(params, { inhibitEvents: false,
width: null,
height: null,
fadeTime: null
fadeInTime: null,
fadeOutTime: null,
fadeFactor: DEFAULT_FADE_FACTOR
});
this._container = container;
this._children = container.get_children();
this._fadeTime = params.fadeTime;
this._fadeInTime = params.fadeInTime;
this._fadeOutTime = params.fadeOutTime;
this._fadeFactor = params.fadeFactor;
this.actor = new St.Bin({ x: 0,
y: 0,
style_class: 'lightbox',
@ -52,6 +59,7 @@ const Lightbox = new Lang.Class({
container.add_actor(this.actor);
this.actor.raise_top();
this.actor.hide();
this.shown = false;
this.actor.connect('destroy', Lang.bind(this, this._onDestroy));
@ -93,24 +101,30 @@ const Lightbox = new Lang.Class({
},
show: function() {
if (this._fadeTime) {
if (this._fadeInTime) {
this.shown = false;
this.actor.opacity = 0;
Tweener.addTween(this.actor,
{ opacity: 255,
time: this._fadeTime,
transition: 'easeOutQuad'
{ opacity: 255 * this._fadeFactor,
time: this._fadeInTime,
transition: 'easeOutQuad',
onComplete: Lang.bind(this, function() {
this.shown = true;
})
});
} else {
this.actor.opacity = 255;
this.actor.opacity = 255 * this._fadeFactor;
this.shown = true;
}
this.actor.show();
},
hide: function() {
if (this._fadeTime) {
this.shown = false;
if (this._fadeOutTime) {
Tweener.addTween(this.actor,
{ opacity: 0,
time: this._fadeTime,
time: this._fadeOutTime,
transition: 'easeOutQuad',
onComplete: Lang.bind(this, function() {
this.actor.hide();