recompute width cache if client width has changed to take into account the fact

that derived OnSize is run before cache has been cleared in own OnSize


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@17929 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/generic/statusbr.h

@@ -108,6 +108,8 @@ protected:
 
   wxArrayString     m_statusStrings;
 
+  // the last known width of the client rect (used to rebuild cache)
+  int               m_lastClientWidth;
   // the widths of the status bar panes in pixels
   wxArrayInt        m_widthsAbs;
 

src/generic/statusbr.cpp

@@ -300,11 +300,16 @@ bool wxStatusBarGeneric::GetFieldRect(int n, wxRect& rect) const
 #endif
 
     // we cache m_widthsAbs between calls normally but it's cleared when the
-    // status widths change so recompute it if needed
-    if ( m_widthsAbs.IsEmpty() )
+    // status widths change so recompute it if needed and also if client width
+    // has changed to take into account the fact that derived OnSize is run
+    // before cache has been cleared in own OnSize
+    if ( m_widthsAbs.IsEmpty() || (m_lastClientWidth != width) )
     {
         wxConstCast(this, wxStatusBarGeneric)->
             m_widthsAbs = CalculateAbsWidths(width);
+        // remember last width for which we have recomputed the widths in pixels
+        wxConstCast(this, wxStatusBarGeneric)->
+            m_lastClientWidth = width;
     }
 
     rect.x = 0;