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 wxImplDC
  20 #else
  21 #define wxGTKImplDC wxDC
  22 class WXDLLIMPEXP_CORE wxDC : public wxDCBase
  23 #endif
  24
  25 {
  26 public:
  27 #if wxUSE_NEW_DC
  28     wxGTKImplDC( wxDC *owner );
  29 #else
  30     wxDC();
  31 #endif
  32
  33     virtual ~wxGTKImplDC();
  34
  35 #if wxUSE_PALETTE
  36     void SetColourMap( const wxPalette& palette ) { SetPalette(palette); };
  37 #endif // wxUSE_PALETTE
  38
  39     // Resolution in pixels per logical inch
  40     virtual wxSize GetPPI() const;
  41
  42     virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; }
  43     virtual void EndDoc() { }
  44     virtual void StartPage() { }
  45     virtual void EndPage() { }
  46
  47     virtual GdkWindow* GetGDKWindow() const { return NULL; }
  48
  49 protected:
  50     // implementation
  51     wxCoord XDEV2LOG(wxCoord x) const       { return DeviceToLogicalX(x); }
  52     wxCoord XDEV2LOGREL(wxCoord x) const    { return DeviceToLogicalXRel(x); }
  53     wxCoord YDEV2LOG(wxCoord y) const       { return DeviceToLogicalY(y); }
  54     wxCoord YDEV2LOGREL(wxCoord y) const    { return DeviceToLogicalYRel(y); }
  55     wxCoord XLOG2DEV(wxCoord x) const       { return LogicalToDeviceX(x); }
  56     wxCoord XLOG2DEVREL(wxCoord x) const    { return LogicalToDeviceXRel(x); }
  57     wxCoord YLOG2DEV(wxCoord y) const       { return LogicalToDeviceY(y); }
  58     wxCoord YLOG2DEVREL(wxCoord y) const    { return LogicalToDeviceYRel(y); }
  59
  60     // base class pure virtuals implemented here
  61     virtual void DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
  62     virtual void DoGetSizeMM(int* width, int* height) const;
  63
  64 private:
  65     DECLARE_ABSTRACT_CLASS(wxGTKImplDC)
  66 };
  67
  68 // this must be defined when wxDC::Blit() honours the DC origian and needed to
  69 // allow wxUniv code in univ/winuniv.cpp to work with versions of wxGTK
  70 // 2.3.[23]
  71 #ifndef wxHAS_WORKING_GTK_DC_BLIT
  72     #define wxHAS_WORKING_GTK_DC_BLIT
  73 #endif
  74
  75 #endif // __GTKDCH__