include/wx/dfb/private/overlay.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/dfb/private/overlay.h
   3 // Purpose:     wxOverlayImpl declaration
   4 // Author:      Vaclav Slavik
   5 // Created:     2006-10-20
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) wxWidgets team
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_DFB_PRIVATE_OVERLAY_H_
  12 #define _WX_DFB_PRIVATE_OVERLAY_H_
  13
  14 #include "wx/dfb/dfbptr.h"
  15 #include "wx/gdicmn.h"
  16
  17 wxDFB_DECLARE_INTERFACE(IDirectFBSurface);
  18
  19 class WXDLLIMPEXP_FWD_CORE wxWindow;
  20 class WXDLLIMPEXP_FWD_CORE wxwindowDC;
  21
  22 class wxOverlayImpl
  23 {
  24 public:
  25     wxOverlayImpl();
  26     ~wxOverlayImpl();
  27
  28     void Reset();
  29     bool IsOk();
  30     void Init(wxWindowDC* dc, int x , int y , int width , int height);
  31     void BeginDrawing(wxWindowDC* dc);
  32     void EndDrawing(wxWindowDC* dc);
  33     void Clear(wxWindowDC* dc);
  34
  35     // wxDFB specific methods:
  36     bool IsEmpty() const { return m_isEmpty; }
  37     wxRect GetRect() const { return m_rect; }
  38     wxIDirectFBSurfacePtr GetDirectFBSurface() const { return m_surface; }
  39
  40 public:
  41     // window the overlay is associated with
  42     wxWindow *m_window;
  43     // rectangle covered by the overlay, in m_window's window coordinates
  44     wxRect m_rect;
  45     // surface of the overlay, same size as m_rect
  46     wxIDirectFBSurfacePtr m_surface;
  47     // this flag is set to true if nothing was drawn on the overlay (either
  48     // initially or Clear() was called)
  49     bool m_isEmpty;
  50 };
  51
  52 #endif // _WX_DFB_PRIVATE_OVERLAY_H_