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 // Copyright:   (c) wxWidgets team
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_PRIVATE_OVERLAY_H_
  12 #define _WX_PRIVATE_OVERLAY_H_
  13
  14 #include "wx/overlay.h"
  15
  16 #ifdef wxHAS_NATIVE_OVERLAY
  17
  18 #if defined(__WXMAC__)
  19     #include "wx/osx/carbon/private/overlay.h"
  20 #elif defined(__WXDFB__)
  21     #include "wx/dfb/private/overlay.h"
  22 #else
  23     #error "unknown native wxOverlay implementation"
  24 #endif
  25
  26 #else // !wxHAS_NATIVE_OVERLAY
  27
  28 #include "wx/bitmap.h"
  29
  30 class WXDLLIMPEXP_FWD_CORE wxWindow;
  31
  32 // generic implementation of wxOverlay
  33 class wxOverlayImpl
  34 {
  35 public:
  36     wxOverlayImpl();
  37     ~wxOverlayImpl();
  38
  39
  40     // clears the overlay without restoring the former state
  41     // to be done eg when the window content has been changed and repainted
  42     void Reset();
  43
  44     // returns true if it has been setup
  45     bool IsOk();
  46
  47     void Init(wxDC* dc, int x , int y , int width , int height);
  48
  49     void BeginDrawing(wxDC* dc);
  50
  51     void EndDrawing(wxDC* dc);
  52
  53     void Clear(wxDC* dc);
  54
  55 private:
  56     wxBitmap m_bmpSaved ;
  57     int m_x ;
  58     int m_y ;
  59     int m_width ;
  60     int m_height ;
  61     wxWindow* m_window ;
  62 };
  63
  64 #endif // wxHAS_NATIVE_OVERLAY/!wxHAS_NATIVE_OVERLAY
  65
  66 #endif // _WX_PRIVATE_OVERLAY_H_