include/wx/mac/carbon/private/overlay.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/mac/carbon/private/overlay.h
   3 // Purpose:     wxOverlayImpl declaration
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     2006-10-20
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_MAC_CARBON_PRIVATE_OVERLAY_H_
  13 #define _WX_MAC_CARBON_PRIVATE_OVERLAY_H_
  14
  15 #include "wx/mac/private.h"
  16 #include "wx/toplevel.h"
  17 #include "wx/graphics.h"
  18
  19 class wxOverlayImpl
  20 {
  21 public:
  22     wxOverlayImpl() ;
  23     ~wxOverlayImpl() ;
  24
  25
  26     // clears the overlay without restoring the former state
  27     // to be done eg when the window content has been changed and repainted
  28     void Reset();
  29
  30     // returns true if it has been setup
  31     bool IsOk();
  32
  33     void Init( wxWindowDC* dc, int x , int y , int width , int height );
  34
  35     void BeginDrawing( wxWindowDC* dc);
  36
  37     void EndDrawing( wxWindowDC* dc);
  38
  39     void Clear( wxWindowDC* dc);
  40
  41 private:
  42     OSStatus CreateOverlayWindow();
  43
  44     void MacGetBounds( Rect *bounds );
  45
  46     WindowRef m_overlayWindow;
  47     WindowRef m_overlayParentWindow;
  48     CGContextRef m_overlayContext ;
  49     // we store the window in case we would have to issue a Refresh()
  50     wxWindow* m_window ;
  51
  52     int m_x ;
  53     int m_y ;
  54     int m_width ;
  55     int m_height ;
  56 } ;
  57
  58 #endif // _WX_MAC_CARBON_PRIVATE_OVERLAY_H_