On 2012-01-20 at 11:21, Chen Kefeng (CM/ESW2-CN) wrote: > Maybe I have not stated my problem clearly. > > I describe it again. > > Say, I have two actors on my stage, actor_below and actor_above, both are set > reactive. Actor_below lies beneath actor_above. Both of them will get the > mouse event, say, button_pressed_event. If it returns FALSE in the callback > function of actor_above, the event will be received by the stage instead of > actor_below in the bubble phase. My intention is to let actor_below get the > event if actor_above is not interested in the event. > > Is there any way to do that? > Best Regards / Mit freundlichen Grüßen > CHEN Kefeng 陈科峰 > CM/ESW2-CN > Tel. +86 512 6767 7549 > Fax +86 512 6762 1200 > From: [email protected] > [mailto:[email protected]] On Behalf Of Chen > Kefeng (CM/ESW2-CN) > Sent: Thursday, January 19, 2012 10:01 AM > To: [email protected] > Subject: Passing touch/mouse input to underlying Actor > > Hi everybody, > > Nice to be here!! > > This problem programs have been bothering me for a long time. I hope that > someone could show me the way out. > > In our program we want to forward the unhandled mouse events from one actor > to the actors lying below. But if we return FALSE in the signal call back > only the parent of the actor will get the event instead. > > Does anybody have the experience to deal with this situation? I would very > appreciate it if someone can give me a hint!
events will be bubbled up from the actor to its parent, recursively until the signal emission will hit the top-level. if the actors you're placing one on top of the other are not in a parent-child relationship, then the top-most actor will block the events for the actor underneath it. there is no way to avoid that: it's how Clutter works. you can, strictly speaking, find out the actor underneath the actor underneath the pointer by hiding the top-most actor, then calling clutter_stage_get_actor_at_pos(), and finally showing the top-most actor, but it'll be expensive, and it's not a great plan. ciao, Emmanuele. -- Emmanuele Bassi, Intel Open Source Technology Center _______________________________________________ clutter-app-devel-list mailing list [email protected] http://lists.clutter-project.org/listinfo/clutter-app-devel-list
