include/wx/gtk/dc.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/gtk/dc.h
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifndef __GTKDCH__
  11 #define __GTKDCH__
  12
  13
  14 //-----------------------------------------------------------------------------
  15 // wxDC
  16 //-----------------------------------------------------------------------------
  17
  18 #if wxUSE_NEW_DC
  19 class WXDLLIMPEXP_CORE wxGTKImplDC : public wxDC
  20 #else
  21 #define wxGTKImplDC wxDC
  22 class WXDLLIMPEXP_CORE wxGTKImplDC : public wxDCBase
  23 #endif
  24
  25 {
  26 public:
  27     wxGTKImplDC();
  28     virtual ~wxGTKImplDC() { }
  29
  30 #if wxUSE_PALETTE
  31     void SetColourMap( const wxPalette& palette ) { SetPalette(palette); };
  32 #endif // wxUSE_PALETTE
  33
  34     // Resolution in pixels per logical inch
  35     virtual wxSize GetPPI() const;
  36
  37     virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; }
  38     virtual void EndDoc() { }
  39     virtual void StartPage() { }
  40     virtual void EndPage() { }
  41
  42     virtual GdkWindow* GetGDKWindow() const { return NULL; }
  43
  44 protected:
  45     // implementation
  46     wxCoord XDEV2LOG(wxCoord x) const       { return DeviceToLogicalX(x); }
  47     wxCoord XDEV2LOGREL(wxCoord x) const    { return DeviceToLogicalXRel(x); }
  48     wxCoord YDEV2LOG(wxCoord y) const       { return DeviceToLogicalY(y); }
  49     wxCoord YDEV2LOGREL(wxCoord y) const    { return DeviceToLogicalYRel(y); }
  50     wxCoord XLOG2DEV(wxCoord x) const       { return LogicalToDeviceX(x); }
  51     wxCoord XLOG2DEVREL(wxCoord x) const    { return LogicalToDeviceXRel(x); }
  52     wxCoord YLOG2DEV(wxCoord y) const       { return LogicalToDeviceY(y); }
  53     wxCoord YLOG2DEVREL(wxCoord y) const    { return LogicalToDeviceYRel(y); }
  54
  55     // base class pure virtuals implemented here
  56     virtual void DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
  57     virtual void DoGetSizeMM(int* width, int* height) const;
  58
  59 private:
  60     DECLARE_ABSTRACT_CLASS(wxGTKImplDC)
  61 };
  62
  63 // this must be defined when wxDC::Blit() honours the DC origian and needed to
  64 // allow wxUniv code in univ/winuniv.cpp to work with versions of wxGTK
  65 // 2.3.[23]
  66 #ifndef wxHAS_WORKING_GTK_DC_BLIT
  67     #define wxHAS_WORKING_GTK_DC_BLIT
  68 #endif
  69
  70 #endif // __GTKDCH__