Code review comment for lp:~timfelgentreff/stratagus/timfelgentreff-zoomeable-view

I tested it on Linux in both opengl and opengles and there is problem. Resolution of monitor is 800x600 and original resolution of stratagus is 1600x900. In this mode I can move mouse only in rectangle (800/1600 * 800) x (600/900 * 600). So I cannot click on exit button, because mouse is only in subrectangle 800x600 from full screen 1600x900 (scaled to 800x600).