+ // preparing the update region
+
+ wxRegion updateRgn;
+ const NSRect *rects;
+ NSInteger count;
+
+ [slf getRectsBeingDrawn:&rects count:&count];
+ for ( int i = 0 ; i < count ; ++i )
+ {
+ updateRgn.Union(wxFromNSRect(slf, rects[i]));
+ }
+
+ wxWindow* wxpeer = GetWXPeer();
+
+ if ( wxpeer->MacGetLeftBorderSize() != 0 || wxpeer->MacGetTopBorderSize() != 0 )
+ {
+ // as this update region is in native window locals we must adapt it to wx window local
+ updateRgn.Offset( wxpeer->MacGetLeftBorderSize() , wxpeer->MacGetTopBorderSize() );
+ }
+
+ // Restrict the update region to the shape of the window, if any, and also
+ // remember the region that we need to clear later.
+ wxNonOwnedWindow* const tlwParent = wxpeer->MacGetTopLevelWindow();
+ const bool isTopLevel = tlwParent == wxpeer;
+ wxRegion clearRgn;
+ if ( tlwParent->GetWindowStyle() & wxFRAME_SHAPED )
+ {
+ if ( isTopLevel )
+ clearRgn = updateRgn;
+
+ int xoffset = 0, yoffset = 0;
+ wxRegion rgn = tlwParent->GetShape();
+ wxpeer->MacRootWindowToWindow( &xoffset, &yoffset );
+ rgn.Offset( xoffset, yoffset );
+ updateRgn.Intersect(rgn);
+
+ if ( isTopLevel )
+ {
+ // Exclude the window shape from the region to be cleared below.
+ rgn.Xor(wxpeer->GetSize());
+ clearRgn.Intersect(rgn);
+ }
+ }
+
+ wxpeer->GetUpdateRegion() = updateRgn;
+
+ // setting up the drawing context
+
projects / wxWidgets.git / blobdiff