windows.
This leaves more space for the actual window contents, and
fixes the usability problem Carsten Pfeiffer pointed out
on kde-core-devel.
- Rewrote the masking code to use precalculated bounding rects
to set the window shape.
This should result a huge performance increase on low-end
systems and improve snappyness in general.
- Added some more namespace fixes as suggested by Karol Szwed.
svn path=/trunk/kdebase/kwin/; revision=163885
4c1d786510