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workspace: Add smooth scrolling support to zoom windows

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https://bugzilla.gnome.org/show_bug.cgi?id=687573
This commit is contained in:
Jasper St. Pierre 2012-11-04 10:55:37 -05:00
parent 8d4855f100
commit 770ff19313
1 changed files with 19 additions and 5 deletions
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24
js/ui/workspace.js
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@ -260,23 +260,37 @@ const WindowClone = new Lang.Class({
_onScroll : function (actor, event) {
let direction = event.get_scroll_direction();
if (direction == Clutter.ScrollDirection.UP) {
let delta;
if (event.is_pointer_emulated())
return;
if (direction == Clutter.ScrollDirection.DOWN) {
delta = -SCROLL_SCALE_AMOUNT;
} else if (direction == Clutter.ScrollDirection.UP) {
delta = +SCROLL_SCALE_AMOUNT;
} else if (direction == Clutter.ScrollDirection.SMOOTH) {
let [dx, dy] = event.get_scroll_delta();
delta = -dy * 10;
}
if (delta > 0) {
if (this._zoomStep == undefined)
this._zoomStart();
if (this._zoomStep < 100) {
this._zoomStep += SCROLL_SCALE_AMOUNT;
this._zoomStep += delta;
this._zoomStep = Math.min(100, this._zoomStep);
this._zoomUpdate();
}
} else if (direction == Clutter.ScrollDirection.DOWN) {
} else if (delta < 0) {
if (this._zoomStep > 0) {
this._zoomStep -= SCROLL_SCALE_AMOUNT;
this._zoomStep += delta;
this._zoomStep = Math.max(0, this._zoomStep);
this._zoomUpdate();
}
if (this._zoomStep <= 0.0)
this._zoomEnd();
}
},
_zoomUpdate : function () {