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popup-menu: Allow adjusting where in the source the arrow points to

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Currently BoxPointer/Menus always point to the center of the
associated source actor. This is generally what we want, but
add some API to adjust that behavior for the cases where it
isn't.

https://bugzilla.gnome.org/show_bug.cgi?id=659274
This commit is contained in:
Florian Müllner
2011-09-15 00:14:03 +02:00
parent d0edd970e1
commit 85520e34ab
2 changed files with 25 additions and 7 deletions
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22
js/ui/boxpointer.js
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@ -46,6 +46,7 @@ BoxPointer.prototype = {
this._yOffset = 0;
this._xPosition = 0;
this._yPosition = 0;
this._sourceAlignment = 0.5;
},
show: function(animate, onComplete) {
@ -180,7 +181,7 @@ BoxPointer.prototype = {
this.bin.allocate(childBox, flags);
if (this._sourceActor && this._sourceActor.mapped)
this._reposition(this._sourceActor, this._alignment);
this._reposition(this._sourceActor, this._arrowAlignment);
},
_drawBorder: function(area) {
@ -312,18 +313,31 @@ BoxPointer.prototype = {
this.actor.show();
this._sourceActor = sourceActor;
this._alignment = alignment;
this._arrowAlignment = alignment;
this._reposition(sourceActor, alignment);
},
setSourceAlignment: function(alignment) {
this._sourceAlignment = alignment;
if (!this._sourceActor)
return;
// We need to show it now to force an allocation,
// so that we can query the correct size.
this.actor.show();
this._reposition(this._sourceActor, this._arrowAlignment);
},
_reposition: function(sourceActor, alignment) {
// Position correctly relative to the sourceActor
let sourceNode = sourceActor.get_theme_node();
let sourceContentBox = sourceNode.get_content_box(sourceActor.get_allocation_box());
let sourceAllocation = Shell.util_get_transformed_allocation(sourceActor);
let sourceCenterX = sourceAllocation.x1 + sourceContentBox.x1 + (sourceContentBox.x2 - sourceContentBox.x1) / 2;
let sourceCenterY = sourceAllocation.y1 + sourceContentBox.y1 + (sourceContentBox.y2 - sourceContentBox.y1) / 2;
let sourceCenterX = sourceAllocation.x1 + sourceContentBox.x1 + (sourceContentBox.x2 - sourceContentBox.x1) * this._sourceAlignment;
let sourceCenterY = sourceAllocation.y1 + sourceContentBox.y1 + (sourceContentBox.y2 - sourceContentBox.y1) * this._sourceAlignment;
let [minWidth, minHeight, natWidth, natHeight] = this.actor.get_preferred_size();
// We also want to keep it onscreen, and separated from the