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

   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 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_MAC_CARBON_PRIVATE_OVERLAY_H_
  12 #define _WX_MAC_CARBON_PRIVATE_OVERLAY_H_
  13
  14 #include "wx/osx/private.h"
  15 #include "wx/toplevel.h"
  16 #include "wx/graphics.h"
  17
  18 class wxOverlayImpl
  19 {
  20 public:
  21     wxOverlayImpl() ;
  22     ~wxOverlayImpl() ;
  23
  24
  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();
  28
  29     // returns true if it has been setup
  30     bool IsOk();
  31
  32     void Init( wxDC* dc, int x , int y , int width , int height );
  33
  34     void BeginDrawing( wxDC* dc);
  35
  36     void EndDrawing( wxDC* dc);
  37
  38     void Clear( wxDC* dc);
  39
  40 private:
  41     OSStatus CreateOverlayWindow();
  42
  43     void MacGetBounds( Rect *bounds );
  44
  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 ;
  50
  51     int m_x ;
  52     int m_y ;
  53     int m_width ;
  54     int m_height ;
  55 } ;
  56
  57 #endif // _WX_MAC_CARBON_PRIVATE_OVERLAY_H_