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slider: React to touch events

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The slider locks to the first interacting sequence, and ignores events from
any other.

https://bugzilla.gnome.org/show_bug.cgi?id=733633
This commit is contained in:
Carlos Garnacho 2014-07-22 12:37:06 +02:00
parent acb1497f4f
commit dbbf4097a5
1 changed files with 43 additions and 7 deletions
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50
js/ui/slider.js
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@ -24,6 +24,7 @@ const Slider = new Lang.Class({
accessible_role: Atk.Role.SLIDER });
this.actor.connect('repaint', Lang.bind(this, this._sliderRepaint));
this.actor.connect('button-press-event', Lang.bind(this, this._startDragging));
this.actor.connect('touch-event', Lang.bind(this, this._touchDragging));
this.actor.connect('scroll-event', Lang.bind(this, this._onScrollEvent));
this.actor.connect('key-press-event', Lang.bind(this, this.onKeyPressEvent));
@ -121,11 +122,21 @@ const Slider = new Lang.Class({
this._dragging = true;
let device = event.get_device();
device.grab(this.actor);
this._grabbedDevice = device;
let sequence = event.get_event_sequence();
if (sequence != null)
device.sequence_grab(sequence, this.actor);
else
device.grab(this.actor);
this._grabbedDevice = device;
this._grabbedSequence = sequence;
if (sequence == null) {
this._releaseId = this.actor.connect('button-release-event', Lang.bind(this, this._endDragging));
this._motionId = this.actor.connect('motion-event', Lang.bind(this, this._motionEvent));
}
this._releaseId = this.actor.connect('button-release-event', Lang.bind(this, this._endDragging));
this._motionId = this.actor.connect('motion-event', Lang.bind(this, this._motionEvent));
let absX, absY;
[absX, absY] = event.get_coords();
this._moveHandle(absX, absY);
@ -134,10 +145,17 @@ const Slider = new Lang.Class({
_endDragging: function() {
if (this._dragging) {
this.actor.disconnect(this._releaseId);
this.actor.disconnect(this._motionId);
if (this._releaseId)
this.actor.disconnect(this._releaseId);
if (this._motionId)
this.actor.disconnect(this._motionId);
this._grabbedDevice.ungrab();
if (this._grabbedSequence != null)
this._grabbedDevice.sequence_ungrab(this._grabbedSequence);
else
this._grabbedDevice.ungrab();
this._grabbedSequence = null;
this._grabbedDevice = null;
this._dragging = false;
@ -146,6 +164,24 @@ const Slider = new Lang.Class({
return Clutter.EVENT_STOP;
},
_touchDragging: function(actor, event) {
let device = event.get_device();
let sequence = event.get_event_sequence();
if (!this._dragging &&
event.type() == Clutter.EventType.TOUCH_BEGIN) {
this.startDragging(event);
return Clutter.EVENT_STOP;
} else if (device.sequence_get_grabbed_actor(sequence) == actor) {
if (event.type() == Clutter.EventType.TOUCH_UPDATE)
return this._motionEvent(actor, event);
else if (event.type() == Clutter.EventType.TOUCH_END)
return this._endDragging();
}
return Clutter.EVENT_PROPAGATE;
},
scroll: function(event) {
let direction = event.get_scroll_direction();
let delta;