Flickering in the native menu

MacOSX and iOS
1

This happens (at least) in OS X 10.11.4

To reproduce:

  • Launch the Demo.
  • Tabs & Widgets → Menus → Look-and-feel → Use Native Menu Bar
  • Observe the native menu bar and press e.g. Command - I

→ The menu item ‘Look-and-feel’ flickers (2 times) instead of just flashing up once.

I don’t understand the code involved, but one flicker is triggered at

static void JuceMenuCallbackClass::menuItemInvoked (id self, SEL, NSMenuItem* item)

which calls

bool NSViewComponentPeer::handleKeyEvent (NSEvent* ev, bool isKeyDown)
{
…
used = handleKeyUpOrDown (true) || used;
used = handleKeyPress (keyCode, textCharacter) || used;
…
}

Outcomment the second line and the menu item will only flash up once (but it will not work anymore). Maybe this helps in tracking the issue down.

2

bump

@jules, do you have any idea where the second flicker is triggered?

3

This is one of those posts where I can see it’ll take a lot of debugging, and am a bit busy right now. It’s in my bookmarks, but can’t promise when I’ll get chance to look at it.

4

Thanks for the reply, good to know that you noticed.

No urgency on my side about this.

5

Thank you @jules for addressing this in your recent commit a46191ad!