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overview: Remove custom swipe scrolling implementation

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https://bugzilla.gnome.org/show_bug.cgi?id=689062
This commit is contained in:
Jasper St. Pierre 2012-03-27 13:07:11 -03:00
parent 1e40264ee4
commit 485d16ca4e
1 changed files with 0 additions and 176 deletions
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176
js/ui/overview.js
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@ -46,18 +46,6 @@ const GLSL_DIM_EFFECT_CODE = '\
cogl_color_out.xyz = cogl_color_out.xyz * (1.0 - a); \
cogl_color_out.a = 1.0;';
const SwipeScrollDirection = {
NONE: 0,
HORIZONTAL: 1,
VERTICAL: 2
};
const SwipeScrollResult = {
CANCEL: 0,
SWIPE: 1,
CLICK: 2
};
const ShellInfo = new Lang.Class({
Name: 'ShellInfo',
@ -165,8 +153,6 @@ const Overview = new Lang.Class({
}
}));
this._scrollDirection = SwipeScrollDirection.NONE;
this._scrollAdjustment = null;
this._capturedEventId = 0;
this._buttonPressId = 0;
@ -348,161 +334,6 @@ const Overview = new Lang.Class({
this._group.add_action(action);
},
setScrollAdjustment: function(adjustment, direction) {
if (this.isDummy)
return;
this._scrollAdjustment = adjustment;
if (this._scrollAdjustment == null)
this._scrollDirection = SwipeScrollDirection.NONE;
else
this._scrollDirection = direction;
},
_onButtonPress: function(actor, event) {
if (this._scrollDirection == SwipeScrollDirection.NONE
|| event.get_button() != 1)
return;
let [stageX, stageY] = event.get_coords();
this._dragStartX = this._dragX = stageX;
this._dragStartY = this._dragY = stageY;
this._dragStartValue = this._scrollAdjustment.value;
this._lastMotionTime = -1; // used to track "stopping" while swipe-scrolling
this._capturedEventId = global.stage.connect('captured-event',
Lang.bind(this, this._onCapturedEvent));
this.emit('swipe-scroll-begin');
},
_onCapturedEvent: function(actor, event) {
let stageX, stageY;
let threshold = Gtk.Settings.get_default().gtk_dnd_drag_threshold;
switch(event.type()) {
case Clutter.EventType.BUTTON_RELEASE:
[stageX, stageY] = event.get_coords();
// default to snapping back to the original value
let newValue = this._dragStartValue;
let minValue = this._scrollAdjustment.lower;
let maxValue = this._scrollAdjustment.upper - this._scrollAdjustment.page_size;
let direction;
if (this._scrollDirection == SwipeScrollDirection.HORIZONTAL) {
direction = stageX > this._dragStartX ? -1 : 1;
if (Clutter.get_default_text_direction() == Clutter.TextDirection.RTL)
direction *= -1;
} else {
direction = stageY > this._dragStartY ? -1 : 1;
}
// We default to scroll a full page size; both the first
// and the last page may be smaller though, so we need to
// adjust difference in those cases.
let difference = direction * this._scrollAdjustment.page_size;
if (this._dragStartValue + difference > maxValue)
difference = maxValue - this._dragStartValue;
else if (this._dragStartValue + difference < minValue)
difference = minValue - this._dragStartValue;
// If the user has moved more than half the scroll
// difference, we want to "settle" to the new value
// even if the user stops dragging rather "throws" by
// releasing during the drag.
let distance = this._dragStartValue - this._scrollAdjustment.value;
let noStop = Math.abs(distance / difference) > 0.5;
// We detect if the user is stopped by comparing the
// timestamp of the button release with the timestamp of
// the last motion. Experimentally, a difference of 0 or 1
// millisecond indicates that the mouse is in motion, a
// larger difference indicates that the mouse is stopped.
if ((this._lastMotionTime > 0 &&
this._lastMotionTime > event.get_time() - 2) ||
noStop) {
if (this._dragStartValue + difference >= minValue &&
this._dragStartValue + difference <= maxValue)
newValue += difference;
}
let result;
// See if the user has moved the mouse enough to trigger
// a drag
if (Math.abs(stageX - this._dragStartX) < threshold &&
Math.abs(stageY - this._dragStartY) < threshold) {
// no motion? It's a click!
result = SwipeScrollResult.CLICK;
this.emit('swipe-scroll-end', result);
} else {
if (newValue == this._dragStartValue)
result = SwipeScrollResult.CANCEL;
else
result = SwipeScrollResult.SWIPE;
// The event capture handler is disconnected
// while scrolling to the final position, so
// to avoid undesired prelights we raise
// the cover pane.
this._coverPane.raise_top();
this._coverPane.show();
Tweener.addTween(this._scrollAdjustment,
{ value: newValue,
time: ANIMATION_TIME,
transition: 'easeOutQuad',
onCompleteScope: this,
onComplete: function() {
this._coverPane.hide();
this.emit('swipe-scroll-end',
result);
}
});
}
global.stage.disconnect(this._capturedEventId);
this._capturedEventId = 0;
return result != SwipeScrollResult.CLICK;
case Clutter.EventType.MOTION:
[stageX, stageY] = event.get_coords();
let dx = this._dragX - stageX;
let dy = this._dragY - stageY;
let primary = Main.layoutManager.primaryMonitor;
this._dragX = stageX;
this._dragY = stageY;
this._lastMotionTime = event.get_time();
// See if the user has moved the mouse enough to trigger
// a drag
if (Math.abs(stageX - this._dragStartX) < threshold &&
Math.abs(stageY - this._dragStartY) < threshold)
return true;
if (this._scrollDirection == SwipeScrollDirection.HORIZONTAL) {
if (Clutter.get_default_text_direction() == Clutter.TextDirection.RTL)
this._scrollAdjustment.value -= (dx / primary.width) * this._scrollAdjustment.page_size;
else
this._scrollAdjustment.value += (dx / primary.width) * this._scrollAdjustment.page_size;
} else {
this._scrollAdjustment.value += (dy / primary.height) * this._scrollAdjustment.page_size;
}
return true;
// Block enter/leave events to avoid prelights
// during swipe-scroll
case Clutter.EventType.ENTER:
case Clutter.EventType.LEAVE:
return true;
}
return false;
},
_getDesktopClone: function() {
let windows = global.get_window_actors().filter(function(w) {
return w.meta_window.get_window_type() == Meta.WindowType.DESKTOP;
@ -603,9 +434,6 @@ const Overview = new Lang.Class({
this._modal = true;
this._animateVisible();
this._shown = true;
this._buttonPressId = this._group.connect('button-press-event',
Lang.bind(this, this._onButtonPress));
},
fadeInDesktop: function() {
@ -705,10 +533,6 @@ const Overview = new Lang.Class({
this._shown = false;
this._syncInputMode();
if (this._buttonPressId > 0)
this._group.disconnect(this._buttonPressId);
this._buttonPressId = 0;
},
// hideTemporarily: