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1 /////////////////////////////////////////////////////////////////////////////

2 // Name: wx/osx/carbon/private/overlay.h

3 // Purpose: wxOverlayImpl declaration

4 // Author: Stefan Csomor

5 // Modified by:

6 // Created: 2006-10-20

7 // Copyright: (c) wxWidgets team

8 // Licence: wxWindows licence

9 /////////////////////////////////////////////////////////////////////////////

11 #ifndef _WX_MAC_CARBON_PRIVATE_OVERLAY_H_

12 #define _WX_MAC_CARBON_PRIVATE_OVERLAY_H_

14 #include "wx/osx/private.h"

15 #include "wx/toplevel.h"

16 #include "wx/graphics.h"

18 class wxOverlayImpl

20 public:

21 wxOverlayImpl() ;

22 ~wxOverlayImpl() ;

25 // clears the overlay without restoring the former state

26 // to be done eg when the window content has been changed and repainted

27 void Reset();

29 // returns true if it has been setup

30 bool IsOk();

     void Init( wxDC* dc, int x , int y , int width , int height );

     void BeginDrawing( wxDC* dc);

     void EndDrawing( wxDC* dc);

     void Clear( wxDC* dc);

40 private:

41 OSStatus CreateOverlayWindow();

     void MacGetBounds( Rect *bounds );

45 WindowRef m_overlayWindow;

46 WindowRef m_overlayParentWindow;

47 CGContextRef m_overlayContext ;

48 // we store the window in case we would have to issue a Refresh()

49 wxWindow* m_window ;

51 int m_x ;

52 int m_y ;

53 int m_width ;

54 int m_height ;

57 #endif // _WX_MAC_CARBON_PRIVATE_OVERLAY_H_