- _DrawTriangleThumb() was drawing outside of thumb frame in B_HORIZONTAL mode
- the focus mark was not updated on value changes
- MessageReceived() and FrameMoved() called themselves, resulting in an endless loop
- there were some drawing leftovers when moving the slider around (only in the thumb
frame). The fix is not nice and may cause flickering (it's commented as such)
- Fixed triangle drawing problems due to anti-aliasing
Cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13196 a95241bf-73f2-0310-859d-f6bbb57e9c96