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Updated bitmap blitting code as per 2_4


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@24211 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/bitmap.cpp

@@ -414,10 +414,18 @@ wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight,
     for (int h = 0; h < height; h++)
     {
         char outbyte = 0;
+        int old_x = -1;
+        guint32 old_pixval;
 
         for (int w=0; w<width; w++)
         {
-            guint32 pixval = gdk_image_get_pixel( img, tablex[w], tabley[h] );
+            guint32 pixval;
+            int x = tablex[w];
+            if (x == old_x)
+                pixval = old_pixval;
+            else
+                pixval = gdk_image_get_pixel( img, x, tabley[h] );
+                
             if (bpp==1)
             {
                 if (!pixval)