---------- Forwarded message ---------- From: <[email protected]> Date: Tue, Nov 16, 2010 at 10:04 PM Subject: Issue 163 in los-cocos: Event order To: [email protected]
Status: New Owner: ---- New issue 163 by mikejohnwyatt: Event order http://code.google.com/p/los-cocos/issues/detail?id=163 What steps will reproduce the problem? 1. Create a heirarchy of event-handling layers. At least one of the layers should have multiple child layers. All layers should handle the same event and not return EVENT_HANDLED. Example: Scene BackgroundLayer (z=0) GuiLayer (z=1) AlphaButton (z=0) BravoButton (z=1) 2. Run the program and fire the event. What is the expected output? I expect the event handlers to be called in the following order: 1) BravoButton 2) AlphaButton 3) GuiLayer 4) BackgroundLayer What do you see instead? In reality, the order is like this: 1) BackgroundLayer 2) AlphaButton 3) BravoButton 4) GuiLayer The problem is that the event handlers are simply pushed onto the window in order of the layer's children list (which is sorted with the lowest Z values first). This results in the handlers being called from back-to-front, instead of the documented front-to-back (from \cocos\layer\base_layers.py: "Events are propagated to layers (from front to back) until some layer catches the event and accepts it."). I need the order to be front-to-back so I can implement a basic GUI, in which events (like a mouse click) can be first caught by a widget (like a button) before being optionally passed to the background (i.e. if no button was clicked). I have attached a patch file to fix this issue. Basically I just reversed the order of pushing child handlers onto the window in the scene and layer's push_all_handlers() method. I also removed event pushing from the on_enter method, since that would otherwise cause events to be registered in order of on_enter being called. Attachments: event order fix.patch 2.4 KB -- -- You received this message because you are subscribed to the Google Groups "cocos2d discuss" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/cocos-discuss?hl=en.
