LaurentGomila/SFML — pull request #617 by mantognini (2014-05-26 13:57:28+00:00)
Title: Improve OS X Implementation: performance and events handling

What this does:
* Optimised OS X implementation regarding scaling factor:
- before: WindowImplCocoa's scaling function took ~20% of running time on a benchmark,
- now: it takes << 1%.
* The scaling factor is adapted when the window is moved to another screen with another scaling factor.
- Well, I hope so. I have no external monitor to test this...
* Fixed (un)focus events sent to all windows instead of only one.