include/wx/dcsvg.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/dcsvg.h
   3 // Purpose:     wxSVGFileDC
   4 // Author:      Chris Elliott
   5 // Modified by:
   6 // Created:
   7 // Copyright:   (c) Chris Elliott
   8 // RCS-ID:      $Id$
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_DCSVG_H_
  13 #define _WX_DCSVG_H_
  14
  15 #include "wx/string.h"
  16 #include "wx/dc.h"
  17
  18 #if wxUSE_SVG
  19
  20 #define wxSVGVersion wxT("v0100")
  21
  22 #ifdef __BORLANDC__
  23 #pragma warn -8008
  24 #pragma warn -8066
  25 #endif
  26
  27 class WXDLLIMPEXP_FWD_BASE wxFileOutputStream;
  28
  29
  30
  31 class WXDLLIMPEXP_FWD_CORE wxSVGFileDC;
  32
  33 class WXDLLIMPEXP_CORE wxSVGFileDCImpl : public wxDCImpl
  34 {
  35 public:
  36     wxSVGFileDCImpl( wxSVGFileDC *owner, const wxString &filename,
  37                      int width=320, int height=240, double dpi=72.0 );
  38
  39     virtual ~wxSVGFileDCImpl();
  40
  41     bool IsOk() const { return m_OK; }
  42
  43     virtual bool CanDrawBitmap() const { return true; }
  44     virtual bool CanGetTextExtent() const { return true; }
  45
  46     virtual int GetDepth() const
  47     {
  48         wxFAIL_MSG(wxT("wxSVGFILEDC::GetDepth Call not implemented"));
  49         return -1;
  50     }
  51
  52     virtual void Clear()
  53     {
  54         wxFAIL_MSG(wxT("wxSVGFILEDC::Clear() Call not implemented \nNot sensible for an output file?"));
  55     }
  56
  57     virtual void DestroyClippingRegion();
  58
  59     virtual wxCoord GetCharHeight() const;
  60     virtual wxCoord GetCharWidth() const;
  61
  62     virtual void SetClippingRegion(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
  63                                    wxCoord WXUNUSED(w), wxCoord WXUNUSED(h))
  64     {
  65         wxFAIL_MSG(wxT("wxSVGFILEDC::SetClippingRegion not implemented"));
  66     }
  67
  68     virtual void SetPalette(const wxPalette&  WXUNUSED(palette))
  69     {
  70         wxFAIL_MSG(wxT("wxSVGFILEDC::SetPalette not implemented"));
  71     }
  72
  73     virtual void GetClippingBox(wxCoord *WXUNUSED(x), wxCoord *WXUNUSED(y),
  74                                 wxCoord *WXUNUSED(w), wxCoord *WXUNUSED(h))
  75     {
  76         wxFAIL_MSG(wxT("wxSVGFILEDC::GetClippingBox not implemented"));
  77     }
  78
  79     virtual void SetLogicalFunction(wxRasterOperationMode WXUNUSED(function))
  80     {
  81         wxFAIL_MSG(wxT("wxSVGFILEDC::SetLogicalFunction Call not implemented"));
  82     }
  83
  84     virtual wxRasterOperationMode GetLogicalFunction() const
  85     {
  86         wxFAIL_MSG(wxT("wxSVGFILEDC::GetLogicalFunction() not implemented"));
  87         return wxCOPY;
  88     }
  89
  90     virtual void SetBackground( const wxBrush &brush );
  91     virtual void SetBackgroundMode( int mode );
  92     virtual void SetBrush(const wxBrush& brush);
  93     virtual void SetFont(const wxFont& font);
  94     virtual void SetPen(const wxPen& pen);
  95
  96     virtual void* GetHandle() const { return NULL; }
  97
  98 private:
  99    virtual bool DoGetPixel(wxCoord, wxCoord, wxColour *) const
 100    {
 101        wxFAIL_MSG(wxT("wxSVGFILEDC::DoGetPixel Call not implemented"));
 102        return true;
 103    }
 104
 105    virtual bool DoBlit(wxCoord, wxCoord, wxCoord, wxCoord, wxDC *,
 106                        wxCoord, wxCoord, wxRasterOperationMode = wxCOPY,
 107                        bool = 0, int = -1, int = -1);
 108
 109    virtual void DoCrossHair(wxCoord, wxCoord)
 110    {
 111        wxFAIL_MSG(wxT("wxSVGFILEDC::CrossHair Call not implemented"));
 112    }
 113
 114    virtual void DoDrawArc(wxCoord, wxCoord, wxCoord, wxCoord, wxCoord, wxCoord);
 115
 116    virtual void DoDrawBitmap(const wxBitmap &, wxCoord, wxCoord, bool = false);
 117
 118    virtual void DoDrawCheckMark(wxCoord x, wxCoord y, wxCoord w, wxCoord h);
 119
 120    virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord w, wxCoord h);
 121
 122    virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
 123                                   double sa, double ea);
 124
 125    virtual void DoDrawIcon(const wxIcon &, wxCoord, wxCoord);
 126
 127    virtual void DoDrawLine (wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
 128
 129    virtual void DoDrawLines(int n, wxPoint points[],
 130                             wxCoord xoffset = 0, wxCoord yoffset = 0);
 131
 132    virtual void DoDrawPoint(wxCoord, wxCoord);
 133
 134    virtual void DoDrawPolygon(int n, wxPoint points[],
 135                               wxCoord xoffset, wxCoord yoffset,
 136                               wxPolygonFillMode fillStyle);
 137
 138    virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord w, wxCoord h);
 139
 140    virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
 141                                   double angle);
 142
 143    virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
 144                                        wxCoord w, wxCoord h,
 145                                        double radius = 20) ;
 146
 147    virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
 148
 149    virtual bool DoFloodFill(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
 150                             const wxColour& WXUNUSED(col),
 151                             wxFloodFillStyle WXUNUSED(style) = wxFLOOD_SURFACE)
 152    {
 153        wxFAIL_MSG(wxT("wxSVGFILEDC::DoFloodFill Call not implemented"));
 154        return false;
 155    }
 156
 157    virtual void DoGetSize(int * x, int *y) const
 158    {
 159        if ( x )
 160            *x = m_width;
 161        if ( y )
 162            *y = m_height;
 163    }
 164
 165    virtual void DoGetTextExtent(const wxString& string, wxCoord *w, wxCoord *h,
 166                                 wxCoord *descent = NULL,
 167                                 wxCoord *externalLeading = NULL,
 168                                 const wxFont *font = NULL) const;
 169
 170    virtual void DoSetDeviceClippingRegion(const wxRegion& WXUNUSED(region))
 171    {
 172        wxFAIL_MSG(wxT("wxSVGFILEDC::DoSetDeviceClippingRegion not yet implemented"));
 173    }
 174
 175    virtual void DoSetClippingRegion(int x,  int y, int width, int height);
 176
 177    virtual void DoGetSizeMM( int *width, int *height ) const;
 178
 179    virtual wxSize GetPPI() const;
 180
 181    void Init (const wxString &filename, int width, int height, double dpi);
 182
 183    void write( const wxString &s );
 184
 185 private:
 186    // If m_graphics_changed is true, close the current <g> element and start a
 187    // new one for the last pen/brush change.
 188    void NewGraphicsIfNeeded();
 189
 190    // Open a new graphics group setting up all the attributes according to
 191    // their current values in wxDC.
 192    void DoStartNewGraphics();
 193
 194    wxFileOutputStream *m_outfile;
 195    wxString            m_filename;
 196    int                 m_sub_images; // number of png format images we have
 197    bool                m_OK;
 198    bool                m_graphics_changed;  // set by Set{Brush,Pen}()
 199    int                 m_width, m_height;
 200    double              m_dpi;
 201
 202    // The clipping nesting level is incremented by every call to
 203    // SetClippingRegion() and reset when DestroyClippingRegion() is called.
 204    size_t m_clipNestingLevel;
 205
 206    // Unique ID for every clipping graphics group: this is simply always
 207    // incremented in each SetClippingRegion() call.
 208    size_t m_clipUniqueId;
 209
 210    DECLARE_ABSTRACT_CLASS(wxSVGFileDCImpl)
 211 };
 212
 213
 214 class WXDLLIMPEXP_CORE wxSVGFileDC : public wxDC
 215 {
 216 public:
 217     wxSVGFileDC(const wxString& filename,
 218                 int width = 320,
 219                 int height = 240,
 220                 double dpi = 72.0)
 221         : wxDC(new wxSVGFileDCImpl(this, filename, width, height, dpi))
 222     {
 223     }
 224 };
 225
 226 #endif // wxUSE_SVG
 227
 228 #endif // _WX_DCSVG_H_