include/wx/gtk1/dc.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/gtk1/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 // classes
  15 //-----------------------------------------------------------------------------
  16
  17 class WXDLLIMPEXP_CORE wxDC;
  18
  19 //-----------------------------------------------------------------------------
  20 // wxDC
  21 //-----------------------------------------------------------------------------
  22
  23 class WXDLLIMPEXP_CORE wxDC : public wxDCBase
  24 {
  25 public:
  26     wxDC();
  27     virtual ~wxDC() { }
  28
  29 #if wxUSE_PALETTE
  30     void SetColourMap( const wxPalette& palette ) { SetPalette(palette); };
  31 #endif // wxUSE_PALETTE
  32
  33     // Resolution in pixels per logical inch
  34     virtual wxSize GetPPI() const;
  35
  36     virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; }
  37     virtual void EndDoc() { }
  38     virtual void StartPage() { }
  39     virtual void EndPage() { }
  40
  41     virtual GdkWindow* GetGDKWindow() const { return NULL; }
  42
  43 public:
  44     // implementation
  45     wxCoord XDEV2LOG(wxCoord x) const       { return DeviceToLogicalX(x); }
  46     wxCoord XDEV2LOGREL(wxCoord x) const    { return DeviceToLogicalXRel(x); }
  47     wxCoord YDEV2LOG(wxCoord y) const       { return DeviceToLogicalY(y); }
  48     wxCoord YDEV2LOGREL(wxCoord y) const    { return DeviceToLogicalYRel(y); }
  49     wxCoord XLOG2DEV(wxCoord x) const       { return LogicalToDeviceX(x); }
  50     wxCoord XLOG2DEVREL(wxCoord x) const    { return LogicalToDeviceXRel(x); }
  51     wxCoord YLOG2DEV(wxCoord y) const       { return LogicalToDeviceY(y); }
  52     wxCoord YLOG2DEVREL(wxCoord y) const    { return LogicalToDeviceYRel(y); }
  53
  54     // base class pure virtuals implemented here
  55     virtual void DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
  56     virtual void DoGetSizeMM(int* width, int* height) const;
  57
  58 private:
  59     DECLARE_ABSTRACT_CLASS(wxDC)
  60 };
  61
  62 // this must be defined when wxDC::Blit() honours the DC origian and needed to
  63 // allow wxUniv code in univ/winuniv.cpp to work with versions of wxGTK
  64 // 2.3.[23]
  65 #ifndef wxHAS_WORKING_GTK_DC_BLIT
  66     #define wxHAS_WORKING_GTK_DC_BLIT
  67 #endif
  68
  69 #endif // __GTKDCH__