include/wx/private/overlay.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/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_PRIVATE_OVERLAY_H_
  13 #define _WX_PRIVATE_OVERLAY_H_
  14
  15 #include "wx/overlay.h"
  16
  17 #ifdef wxHAS_NATIVE_OVERLAY
  18
  19 #if defined(__WXMAC__)
  20     #include "wx/mac/carbon/private/overlay.h"
  21 #elif defined(__WXDFB__)
  22     #include "wx/dfb/private/overlay.h"
  23 #else
  24     #error "unknown native wxOverlay implementation"
  25 #endif
  26
  27 #else // !wxHAS_NATIVE_OVERLAY
  28
  29 #include "wx/bitmap.h"
  30
  31 class WXDLLIMPEXP_FWD_CORE wxWindow;
  32
  33 // generic implementation of wxOverlay
  34 class wxOverlayImpl
  35 {
  36 public:
  37     wxOverlayImpl();
  38     ~wxOverlayImpl();
  39
  40
  41     // clears the overlay without restoring the former state
  42     // to be done eg when the window content has been changed and repainted
  43     void Reset();
  44
  45     // returns true if it has been setup
  46     bool IsOk();
  47
  48     void Init(wxWindowDC* dc, int x , int y , int width , int height);
  49
  50     void BeginDrawing(wxWindowDC* dc);
  51
  52     void EndDrawing(wxWindowDC* dc);
  53
  54     void Clear(wxWindowDC* dc);
  55
  56 private:
  57     wxBitmap m_bmpSaved ;
  58     int m_x ;
  59     int m_y ;
  60     int m_width ;
  61     int m_height ;
  62     wxWindow* m_window ;
  63 };
  64
  65 #endif // wxHAS_NATIVE_OVERLAY/!wxHAS_NATIVE_OVERLAY
  66
  67 #endif // _WX_PRIVATE_OVERLAY_H_