Re: Vertical centering an actor

["Jasper St. Pierre" <jstpierre mecheye net>]

On Thu, Jul 5, 2012 at 6:45 PM, Michele <micxgx gmail com> wrote:
> On 5 July 2012 18:45, Jasper St. Pierre <jstpierre mecheye net> wrote:
>> On Thu, Jul 5, 2012 at 12:03 PM, Michele <micxgx gmail com> wrote:
>>> Just to be sure, I've tried with a basic extension. This is the code
>>> I've used to test it:
>>>
>>> const St = imports.gi.St;
>>> const Main = imports.ui.main;
>>>
>>> let actor;
>>>
>>> function init() {
>>>     actor = new St.Bin({ reactive: false });
>>> }
>>>
>>> function enable() {
>>>         Main.layoutManager.addChrome(actor);
>>>
>>>         actor.set_style('border:1px solid red');
>>>         actor.set_size(100,100);
>>>         actor.set_position(200,200);
>>> }
>>>
>>> function disable() {
>>>         actor.destroy();
>>> }
>>>
>>> The part of a window below the red square doesn't get any click. The
>>> only way to make the actor passive is by setting AffectsInputRegion to
>>> false in addChrome, but then all the actor's children don't get mouse
>>> events too.
>>
>> Hm, I swore we tracked reactivity. We don't. Unfortunately, it's going
>> to be hard to do. You have to track the actor's children manually --
>> use Main.layoutManager.trackActor.
>
> Wonderful! I've just tried adding the container actor with
> affectInputRegion:false
>
> Main.layoutManager.addChrome(containerActor, { affectsInputRegion:false} );
>
> and calling
>
> Main.layoutManager._chrome.trackActor(childActor, {affectsInputRegion:true});
>
> on the  only child actor I need to be tracked. At first glance It
> seems to work properly. Am I missing anything? In particular, should I
> do something  on the extension disable function like calling
> _untrackActor for instance or is it enough to destroy the actor?

Destroying the actor should be enough.

>>> What does COW stand for?
>>
>> Composite Overlay Window. See
>> http://blog.mecheye.net/2012/06/the-linux-graphics-stack/ for more
>> information.
>
> Thank you for the link, I will have a look at it.



-- 
  Jasper