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overview: Move dash to a separate layer

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We generally want view content centered, in particular where the
view itself is symmetrical. So move the dash to a separate layer
and use a placeholder to account for its size when showing the
window picker, which is the only view where it doesn't make sense
to center the content.

https://bugzilla.gnome.org/show_bug.cgi?id=694261
This commit is contained in:
Florian Müllner
2013-02-21 18:48:09 +01:00
parent b9dcbd9d33
commit cca008b73c
2 changed files with 63 additions and 3 deletions
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51
js/ui/overviewControls.js
View File

@ -329,12 +329,52 @@ const DashSlider = new Lang.Class({
}
});
const DashSpacer = new Lang.Class({
Name: 'DashSpacer',
Extends: St.Widget,
_init: function(params) {
this.parent(params);
this._bindConstraint = null;
},
setDashActor: function(dashActor) {
if (this._bindConstraint) {
this.remove_constraint(this._bindConstraint);
this._bindConstraint = null;
}
if (dashActor) {
this._bindConstraint = new Clutter.BindConstraint({ source: dashActor,
coordinate: Clutter.BindCoordinate.SIZE });
this.add_constraint(this._bindConstraint);
}
},
vfunc_get_preferred_width: function(forHeight) {
let box = this.get_allocation_box();
let minWidth = this.parent(forHeight)[0];
let natWidth = box.x2 - box.x1;
return [minWidth, natWidth];
},
vfunc_get_preferred_height: function(forWidth) {
let box = this.get_allocation_box();
let minHeight = this.parent(forWidth)[0];
let natHeight = box.y2 - box.y1;
return [minHeight, natHeight];
}
});
const ControlsManager = new Lang.Class({
Name: 'ControlsManager',
_init: function(dash, thumbnails, viewSelector) {
this._dashSlider = new DashSlider(dash);
this.dashActor = this._dashSlider.actor;
this.dashSpacer = new DashSpacer();
this.dashSpacer.setDashActor(this.dashActor);
this._thumbnailsSlider = new ThumbnailsSlider(thumbnails);
this.thumbnailsActor = this._thumbnailsSlider.actor;
@ -343,6 +383,7 @@ const ControlsManager = new Lang.Class({
this._viewSelector.connect('page-changed', Lang.bind(this, this._setVisibility));
this._viewSelector.connect('page-empty', Lang.bind(this, this._onPageEmpty));
Main.overview.connect('showing', Lang.bind(this, this._updateSpacerVisibility));
Main.overview.connect('item-drag-begin', Lang.bind(this,
function() {
let activePage = this._viewSelector.getActivePage();
@ -384,8 +425,18 @@ const ControlsManager = new Lang.Class({
this._thumbnailsSlider.slideOut();
},
_updateSpacerVisibility: function() {
if (Main.overview.animationInProgress && !Main.overview.visibleTarget)
return;
let activePage = this._viewSelector.getActivePage();
this.dashSpacer.visible = (activePage == ViewSelector.ViewPage.WINDOWS);
},
_onPageEmpty: function() {
this._dashSlider.pageEmpty();
this._thumbnailsSlider.pageEmpty();
this._updateSpacerVisibility();
}
});