include/wx/gtk/dcmemory.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dcmemory.h
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifndef _WX_GTK_DCMEMORY_H_
  11 #define _WX_GTK_DCMEMORY_H_
  12
  13 #include "wx/dcclient.h"
  14
  15 //-----------------------------------------------------------------------------
  16 // wxMemoryDC
  17 //-----------------------------------------------------------------------------
  18
  19 class WXDLLIMPEXP_CORE wxMemoryDC : public wxWindowDC, public wxMemoryDCBase
  20 {
  21 public:
  22     wxMemoryDC() : wxWindowDC() { Init(); }
  23     wxMemoryDC(wxBitmap& bitmap) : wxWindowDC() { Init(); SelectObject(bitmap); }
  24     wxMemoryDC( wxDC *dc ); // Create compatible DC
  25     virtual ~wxMemoryDC();
  26
  27     // these get reimplemented for mono-bitmaps to behave
  28     // more like their Win32 couterparts. They now interpret
  29     // wxWHITE, wxWHITE_BRUSH and wxWHITE_PEN as drawing 0
  30     // and everything else as drawing 1.
  31     virtual void SetPen( const wxPen &pen );
  32     virtual void SetBrush( const wxBrush &brush );
  33     virtual void SetBackground( const wxBrush &brush );
  34     virtual void SetTextForeground( const wxColour &col );
  35     virtual void SetTextBackground( const wxColour &col );
  36
  37     // implementation
  38     wxBitmap GetSelectedBitmap() const { return m_selected; }
  39     wxBitmap  m_selected;
  40
  41 protected:
  42     void DoGetSize( int *width, int *height ) const;
  43     virtual void DoSelect(const wxBitmap& bitmap);
  44     virtual wxBitmap DoGetAsBitmap(const wxRect *subrect) const
  45     {
  46         wxBitmap bmp = GetSelectedBitmap();
  47         return subrect ? bmp.GetSubBitmap(*subrect) : bmp;
  48     }
  49
  50 private:
  51     void Init();
  52
  53     DECLARE_DYNAMIC_CLASS(wxMemoryDC)
  54 };
  55
  56 #endif // _WX_GTK_DCMEMORY_H_