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