include/wx/msw/dcmemory.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/msw/dcmemory.h
   3 // Purpose:     wxMemoryDC class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_DCMEMORY_H_
  13 #define _WX_DCMEMORY_H_
  14
  15 #include "wx/dcmemory.h"
  16 #include "wx/msw/dc.h"
  17
  18 class WXDLLIMPEXP_CORE wxMemoryDCImpl: public wxMSWDCImpl
  19 {
  20 public:
  21     wxMemoryDCImpl( wxMemoryDC *owner );
  22     wxMemoryDCImpl( wxMemoryDC *owner, wxBitmap& bitmap );
  23     wxMemoryDCImpl( wxMemoryDC *owner, wxDC *dc ); // Create compatible DC
  24
  25 #if wxUSE_GRAPHICS_CONTEXT
  26     virtual wxGraphicsContext* CreateGraphicsContext();
  27 #endif
  28
  29     // override some base class virtuals
  30     virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
  31     virtual void DoGetSize(int* width, int* height) const;
  32     virtual void DoSelect(const wxBitmap& bitmap);
  33
  34     virtual wxBitmap DoGetAsBitmap(const wxRect* subrect) const
  35     { return subrect == NULL ? GetSelectedBitmap() : GetSelectedBitmap().GetSubBitmapOfHDC(*subrect, GetHDC() );}
  36
  37 protected:
  38     // create DC compatible with the given one or screen if dc == NULL
  39     bool CreateCompatible(wxDC *dc);
  40
  41     // initialize the newly created DC
  42     void Init();
  43
  44     DECLARE_CLASS(wxMemoryDCImpl)
  45     DECLARE_NO_COPY_CLASS(wxMemoryDCImpl)
  46 };
  47
  48 #endif
  49     // _WX_DCMEMORY_H_