* Added BSplitView drawing code to ControlLook.

* BSplitView uses ControlLook to draw itself.
* Small refactoring in SplitLayout to implement IsAboveSplitter(BPoint).
* BSplitView updates the view cursor when the mouse is above a splitter.
* Standard splitter size is now 6 pixels, which is a bit easer to hit.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31137 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/os/interface/ControlLook.h

@@ -208,6 +208,13 @@ public:
 									const rgb_color& base, uint32 flags = 0,
 									uint32 borders = B_ALL_BORDERS);
 
+	/*virtual*/	void			DrawSplitter(BView* view, BRect& rect,
+									const BRect& updateRect,
+									const rgb_color& base,
+									enum orientation orientation,
+									uint32 flags = 0,
+									uint32 borders = B_ALL_BORDERS);
+
 	// various borders
 
 	virtual void				DrawBorder(BView* view, BRect& rect,