Provided GetBestVirtualSize and DoGetBestSize implementations for

generic and GTK+ wxScrolledWindow.

wxWindowBase::DoGetBestSize was returning a virtual size if there were child
controls, which was then used to set the scrolled window actual size.
Similarly, wxWindowBase::GetBestVirtualSize was returning
the actual window size; now we return the virtual size
for dimensions that have scrolling (e.g. vertical scrolling
direction), or the minimum/actual size for those that don't
(e.g. the maximum control width if there is no horizontal
scrolling).

This allows the scrolled window to be properly sized, whereas
before it would start off at the virtual size (giving
enormous layouts).


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@32866 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/generic/splitter.h

@@ -138,7 +138,7 @@ public:
     bool IsSplit() const { return (m_windowTwo != NULL); }
 
     // Sets the sash size
-    void SetSashSize(int WXUNUSED(width)) { }
+    void SetSashSize(int width) { m_sashSize = width; }
 
     // Sets the border size
     void SetBorderSize(int WXUNUSED(width)) { }
@@ -283,6 +283,7 @@ protected:
     int         m_oldY;
     int         m_sashPosition; // Number of pixels from left or top
     double      m_sashGravity;
+    int         m_sashSize;
     wxSize      m_lastSize;
     int         m_requestedSashPosition;
     int         m_sashPositionCurrent; // while dragging