[enhancement] [new option] exit from ShowImage on ESC

[streak]

Please consider adding an option in options "Exit ShowImage on ESC key" This is really handy for example in IrfanView. SOmetime You just want to quick view a image file [double click -> view -> esc for exit from app].

[tangobravo]

Presumably Cmd-Q will quit ShowImage, as in every other Haiku app. Esc has a binding already which is used to clear a selection if one has been made. That makes more sense to me.

[streak]

Maybe add an option "alternate exit" in preferences from ctrl-q to ESC, then. No need to replace whole exit routine, just add an option in prefs for "alternate exit"

[axeld]

Escape also exits full screen mode. I think it's a bad idea to start using escape for closing applications.

And no, we won't add preferences on this level. I remember a media player under Windows that had like 500 options. That's not our way.