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