D15234: Remove breaking pointer constraints functionality

ngraham added a comment.


  Thanks Roman! I agree that changing focus with alt-tab (or anything else) should disable the pointer lock, that the notification message is annoying and should go, and that "long press esc for 5 seconds" is not very obvious and probably should go too. I find myself agreeing with @hein that pointer lock should return if the client regains focus: if I alt-tab out of my FPS game to check my email, when I alt-tab back, it should work again (provided I haven't been killed during the email break lol).
  
  If we are trying to provide an "emergency escape valve" for poorly programmed apps that don't give up pointer locking when they should, let's consider what people do when they panic in response to an anxiety-producing situation with their computer:
  
  - Force-shutdown using the physical power key or power cord (not helpful)
  - Close the laptop screen (not helpful)
  - Quit the app using a keyboard shortcut, if they know one (not helpful)
  - Mash the escape key (ahh, now this is helpful!)
  
  So instead of "long press escape for 5 seconds", how about "press the escape key in quick succession 3 or more times"?

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D15234

To: romangg, #kwin, #vdg
Cc: ngraham, hein, kwin, mkulinski, ragreen, jackyalcine, Pitel, iodelay, bwowk, ZrenBot, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart