Change width of app menu

[sbeyer]

The app menu has a width based on the header button size which is
way too narrow to display its content, see #2012.

This PR changes the width based on the contents (menu items) of
the menu, however, limiting the maximum width to half the window width.

[jancborchardt]

This PR changes the width based on the contents (menu items) of
the menu, however, limiting the maximum width to half the window width.

By "window width", do you mean "screen width"? If so I’d say the prospect of a tray menu half the screen width is a bit much. Don’t we have some max value for the height? I’d say that should be the maximum for the width, so it never goes "landscape mode".

[sbeyer]

By "window width", do you mean "screen width"?

No, let two screenshots speak for themselves:

• The new apps menu with a width based on its content:
  
• The new apps menu with maximum width of half the window width; fake showcase in which we have very long app names (for this screenshot we have added the string " including a long fake suffix")
  

[jancborchardt]

Sorry, misinterpreted "app menu" as "menu of the app" not as "the menu with the app list". ;)

Looks great now, thanks a lot for the screenshots – awesome work! :)

[sbeyer]

Sorry, misinterpreted "app menu" as "menu of the app" not as "the menu with the app list". ;)

Ah, now your original comment makes more sense to me. I think I call that the "tray window", or is the "menu of the app" yet another menu? 😄

[jancborchardt]

Yep, of course you're right, "tray window" is the word for that. I think a contributing factor to my confusion was that it was around 3 AM in the night. ;)