src/common/dcsvg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/svg.cpp
   3 // Purpose:     SVG sample
   4 // Author:      Chris Elliott
   5 // Modified by:
   6 // RCS-ID:      $Id$
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11 // For compilers that support precompilation, includes "wx/wx.h".
  12 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15 #pragma hdrstop
  16 #endif
  17
  18 #if wxUSE_SVG
  19
  20 #ifndef WX_PRECOMP
  21     #include "wx/dcmemory.h"
  22     #include "wx/dcscreen.h"
  23     #include "wx/icon.h"
  24     #include "wx/image.h"
  25 #endif
  26
  27 #include "wx/dcsvg.h"
  28 #include "wx/wfstream.h"
  29 #include "wx/filename.h"
  30
  31 #define wxSVG_DEBUG false
  32 // or true to see the calls being executed
  33
  34 // ----------------------------------------------------------
  35 // Global utilities
  36 // ----------------------------------------------------------
  37
  38 namespace
  39 {
  40
  41 inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
  42
  43 wxString wxBrushString ( wxColour c, int style )
  44 {
  45     wxString s = wxT("fill:") + c.GetAsString(wxC2S_HTML_SYNTAX)  + wxT("; ");
  46     switch ( style )
  47     {
  48         case wxBRUSHSTYLE_SOLID :
  49             s = s + wxT("fill-opacity:1.0; ");
  50             break;
  51         case wxBRUSHSTYLE_TRANSPARENT:
  52             s = s + wxT("fill-opacity:0.0; ");
  53             break;
  54
  55         default :
  56             wxASSERT_MSG(false, wxT("wxSVGFileDC::Requested Brush Style not available"));
  57
  58     }
  59     s = s + wxT("\n");
  60     return s;
  61 }
  62
  63 // This function returns a string representation of a floating point number in
  64 // C locale (i.e. always using "." for the decimal separator) and with the
  65 // fixed precision (which is 2 for some unknown reason but this is what it was
  66 // in this code originally).
  67 inline wxString NumStr(double f)
  68 {
  69     return wxString::FromCDouble(f, 2);
  70 }
  71
  72 } // anonymous namespace
  73
  74 // ----------------------------------------------------------
  75 // wxSVGFileDCImpl
  76 // ----------------------------------------------------------
  77
  78 IMPLEMENT_ABSTRACT_CLASS(wxSVGFileDCImpl, wxDC)
  79
  80 wxSVGFileDCImpl::wxSVGFileDCImpl( wxSVGFileDC *owner, const wxString &filename,
  81                     int width, int height, double dpi ) :
  82         wxDCImpl( owner )
  83     {
  84         Init( filename, width, height, dpi );
  85     }
  86
  87 void wxSVGFileDCImpl::Init (const wxString &filename, int Width, int Height, double dpi)
  88 {
  89     m_width = Width;
  90     m_height = Height;
  91
  92     m_dpi = dpi;
  93
  94     m_OK = true;
  95
  96     m_mm_to_pix_x = dpi/25.4;
  97     m_mm_to_pix_y = dpi/25.4;
  98
  99     m_backgroundBrush = *wxTRANSPARENT_BRUSH;
 100     m_textForegroundColour = *wxBLACK;
 101     m_textBackgroundColour = *wxWHITE;
 102     m_colour = wxColourDisplay();
 103
 104     m_pen   = *wxBLACK_PEN;
 105     m_font  = *wxNORMAL_FONT;
 106     m_brush = *wxWHITE_BRUSH;
 107
 108     m_graphics_changed = true;
 109
 110     ////////////////////code here
 111
 112     m_outfile = new wxFileOutputStream(filename);
 113     m_OK = m_outfile->Ok ();
 114     if (m_OK)
 115     {
 116         m_filename = filename;
 117         m_sub_images = 0;
 118         wxString s;
 119         s = wxT("<?xml version=\"1.0\" standalone=\"no\"?>") + wxString(wxT("\n"));
 120         write(s);
 121         s = wxT("<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 20010904//EN\" ") + wxString(wxT("\n"));
 122         write(s);
 123         s = wxT("\"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd\"> ") + wxString(wxT("\n"));
 124         write(s);
 125         s = wxT("<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" ") + wxString(wxT("\n"));
 126         write(s);
 127         s.Printf( wxT("    width=\"%scm\" height=\"%scm\" viewBox=\"0 0 %d %d \"> \n"), NumStr(float(Width)/dpi*2.54), NumStr(float(Height)/dpi*2.54), Width, Height );
 128         write(s);
 129         s = wxT("<title>SVG Picture created as ") + wxFileName(filename).GetFullName() + wxT(" </title>") + wxT("\n");
 130         write(s);
 131         s = wxString (wxT("<desc>Picture generated by wxSVG ")) + wxSVGVersion + wxT(" </desc>")+ wxT("\n");
 132         write(s);
 133         s =  wxT("<g style=\"fill:black; stroke:black; stroke-width:1\">") + wxString(wxT("\n"));
 134         write(s);
 135     }
 136 }
 137
 138 wxSVGFileDCImpl::~wxSVGFileDCImpl()
 139 {
 140     wxString s = wxT("</g> \n</svg> \n");
 141     write(s);
 142     delete m_outfile;
 143 }
 144
 145 void wxSVGFileDCImpl::DoGetSizeMM( int *width, int *height ) const
 146 {
 147     if (width)
 148         *width = wxRound( (double)m_width / m_mm_to_pix_x );
 149
 150     if (height)
 151         *height = wxRound( (double)m_height / m_mm_to_pix_y );
 152 }
 153
 154 wxSize wxSVGFileDCImpl::GetPPI() const
 155 {
 156     return wxSize( wxRound(m_dpi), wxRound(m_dpi) );
 157 }
 158
 159 void wxSVGFileDCImpl::DoDrawLine (wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
 160 {
 161     if (m_graphics_changed) NewGraphics ();
 162     wxString s;
 163     s.Printf ( wxT("<path d=\"M%d %d L%d %d\" /> \n"), x1,y1,x2,y2 );
 164     if (m_OK)
 165     {
 166         write(s);
 167     }
 168     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DrawLine Call executed"));
 169     CalcBoundingBox(x1, y1);
 170     CalcBoundingBox(x2, y2);
 171     return;
 172 }
 173
 174 void wxSVGFileDCImpl::DoDrawLines(int n, wxPoint points[], wxCoord xoffset , wxCoord yoffset )
 175 {
 176     for ( int i = 1; i < n; i++ )
 177     {
 178         DoDrawLine ( points [i-1].x + xoffset, points [i-1].y + yoffset,
 179             points [ i ].x + xoffset, points [ i ].y + yoffset );
 180     }
 181 }
 182
 183 void wxSVGFileDCImpl::DoDrawPoint (wxCoord x1, wxCoord y1)
 184 {
 185     wxString s;
 186     if (m_graphics_changed) NewGraphics ();
 187     s = wxT("<g style = \"stroke-linecap:round;\" > ") + wxString(wxT("\n"));
 188     write(s);
 189     DoDrawLine ( x1,y1,x1,y1 );
 190     s = wxT("</g>");
 191     write(s);
 192 }
 193
 194 void wxSVGFileDCImpl::DoDrawCheckMark(wxCoord x1, wxCoord y1, wxCoord width, wxCoord height)
 195 {
 196     wxDCImpl::DoDrawCheckMark (x1,y1,width,height);
 197 }
 198
 199 void wxSVGFileDCImpl::DoDrawText(const wxString& text, wxCoord x1, wxCoord y1)
 200 {
 201     DoDrawRotatedText(text, x1,y1,0.0);
 202     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DrawText Call executed"));
 203 }
 204
 205 void wxSVGFileDCImpl::DoDrawRotatedText(const wxString& sText, wxCoord x, wxCoord y, double angle)
 206 {
 207     //known bug; if the font is drawn in a scaled DC, it will not behave exactly as wxMSW
 208     if (m_graphics_changed) NewGraphics ();
 209     wxString s, sTmp;
 210
 211     // calculate bounding box
 212     wxCoord w, h, desc;
 213     DoGetTextExtent(sText, &w, &h, &desc);
 214
 215     double rad = DegToRad(angle);
 216
 217     // wxT("upper left") and wxT("upper right")
 218     CalcBoundingBox(x, y);
 219     CalcBoundingBox((wxCoord)(x + w*cos(rad)), (wxCoord)(y - h*sin(rad)));
 220
 221     // wxT("bottom left") and wxT("bottom right")
 222     x += (wxCoord)(h*sin(rad));
 223     y += (wxCoord)(h*cos(rad));
 224     CalcBoundingBox(x, y);
 225     CalcBoundingBox((wxCoord)(x + h*sin(rad)), (wxCoord)(y + h*cos(rad)));
 226
 227     if (m_backgroundMode == wxBRUSHSTYLE_SOLID)
 228     {
 229         // draw background first
 230         // just like DoDrawRectangle except we pass the text color to it and set the border to a 1 pixel wide text background
 231
 232         wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::Draw Rotated Text Call plotting text background"));
 233         sTmp.Printf ( wxT(" <rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\"  "), x,y+desc-h, w, h );
 234         s = sTmp + wxT("style=\"fill:") + m_textBackgroundColour.GetAsString(wxC2S_HTML_SYNTAX) + wxT("; ");
 235         s = s + wxT("stroke-width:1; stroke:") + m_textBackgroundColour.GetAsString(wxC2S_HTML_SYNTAX) + wxT("; ");
 236         sTmp.Printf ( wxT("\" transform=\"rotate( %s %d %d )  \">"), NumStr(-angle), x,y );
 237         s = s + sTmp + wxT("\n");
 238         write(s);
 239     }
 240     //now do the text itself
 241     s.Printf (wxT(" <text x=\"%d\" y=\"%d\" "),x,y );
 242
 243     sTmp = m_font.GetFaceName ();
 244     if (sTmp.Len () > 0)  s = s + wxT("style=\"font-family:") + sTmp + wxT("; ");
 245     else s = s + wxT("style=\" ");
 246
 247     wxString fontweights [3] = { wxT("normal"), wxT("lighter"), wxT("bold") };
 248     s = s + wxT("font-weight:") + fontweights[m_font.GetWeight() - wxNORMAL] + wxT("; ");
 249
 250     wxString fontstyles [5] = { wxT("normal"), wxT("style error"), wxT("style error"), wxT("italic"), wxT("oblique") };
 251     s = s + wxT("font-style:") + fontstyles[m_font.GetStyle() - wxNORMAL] + wxT("; ");
 252
 253     sTmp.Printf (wxT("font-size:%dpt; fill:"), m_font.GetPointSize () );
 254     s = s + sTmp;
 255     s = s + m_textForegroundColour.GetAsString(wxC2S_HTML_SYNTAX) + wxT("; stroke:") + m_textForegroundColour.GetAsString(wxC2S_HTML_SYNTAX) + wxT("; ");
 256     sTmp.Printf ( wxT("stroke-width:0;\"  transform=\"rotate( %s %d %d )  \" >"),  NumStr(-angle), x,y );
 257     s = s + sTmp + sText + wxT("</text> ") + wxT("\n");
 258     if (m_OK)
 259     {
 260         write(s);
 261     }
 262     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DrawRotatedText Call executed"));
 263 }
 264
 265 void wxSVGFileDCImpl::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 266 {
 267     DoDrawRoundedRectangle(x, y, width, height, 0);
 268 }
 269
 270 void wxSVGFileDCImpl::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
 271
 272 {
 273     if (m_graphics_changed) NewGraphics ();
 274     wxString s;
 275
 276     s.Printf ( wxT(" <rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" rx=\"%s\" "),
 277             x, y, width, height, NumStr(radius) );
 278
 279     s = s + wxT(" /> \n");
 280     write(s);
 281
 282     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawRoundedRectangle Call executed"));
 283     CalcBoundingBox(x, y);
 284     CalcBoundingBox(x + width, y + height);
 285 }
 286
 287 void wxSVGFileDCImpl::DoDrawPolygon(int n, wxPoint points[],
 288                                     wxCoord xoffset, wxCoord yoffset,
 289                                     wxPolygonFillMode fillStyle)
 290 {
 291     if (m_graphics_changed) NewGraphics ();
 292     wxString s, sTmp;
 293     s = wxT("<polygon style=\"");
 294     if ( fillStyle == wxODDEVEN_RULE )
 295         s = s + wxT("fill-rule:evenodd; ");
 296     else
 297         s = s + wxT("fill-rule:nonzero; ");
 298
 299     s = s + wxT("\" \npoints=\"");
 300
 301     for (int i = 0; i < n;  i++)
 302     {
 303         sTmp.Printf ( wxT("%d,%d"), points [i].x+xoffset, points[i].y+yoffset );
 304         s = s + sTmp + wxT("\n");
 305         CalcBoundingBox ( points [i].x+xoffset, points[i].y+yoffset);
 306     }
 307     s = s + wxT("\" /> \n");
 308     write(s);
 309
 310     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawPolygon Call executed"));
 311 }
 312
 313 void wxSVGFileDCImpl::DoDrawEllipse (wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 314
 315 {
 316     if (m_graphics_changed) NewGraphics ();
 317
 318     int rh = height /2;
 319     int rw = width  /2;
 320
 321     wxString s;
 322     s.Printf ( wxT("<ellipse cx=\"%d\" cy=\"%d\" rx=\"%d\" ry=\"%d\" "), x+rw,y+rh, rw, rh );
 323     s = s + wxT(" /> \n");
 324
 325     write(s);
 326
 327     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawEllipse Call executed"));
 328     CalcBoundingBox(x, y);
 329     CalcBoundingBox(x + width, y + height);
 330 }
 331
 332 void wxSVGFileDCImpl::DoDrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord xc, wxCoord yc)
 333 {
 334     /* Draws an arc of a circle, centred on (xc, yc), with starting point
 335     (x1, y1) and ending at (x2, y2). The current pen is used for the outline
 336     and the current brush for filling the shape.
 337
 338     The arc is drawn in an anticlockwise direction from the start point to
 339     the end point.
 340
 341     Might be better described as Pie drawing */
 342
 343     if (m_graphics_changed) NewGraphics ();
 344     wxString s;
 345
 346     // we need the radius of the circle which has two estimates
 347     double r1 = sqrt ( double( (x1-xc)*(x1-xc) ) + double( (y1-yc)*(y1-yc) ) );
 348     double r2 = sqrt ( double( (x2-xc)*(x2-xc) ) + double( (y2-yc)*(y2-yc) ) );
 349
 350     wxASSERT_MSG( (fabs ( r2-r1 ) <= 3), wxT("wxSVGFileDC::DoDrawArc Error in getting radii of circle"));
 351     if ( fabs ( r2-r1 ) > 3 )    //pixels
 352     {
 353         s = wxT("<!--- wxSVGFileDC::DoDrawArc Error in getting radii of circle --> \n");
 354         write(s);
 355     }
 356
 357     double theta1 = atan2((double)(yc-y1),(double)(x1-xc));
 358     if ( theta1 < 0 ) theta1 = theta1 + M_PI * 2;
 359     double theta2 = atan2((double)(yc-y2), (double)(x2-xc));
 360     if ( theta2 < 0 ) theta2 = theta2 + M_PI * 2;
 361     if ( theta2 < theta1 ) theta2 = theta2 + M_PI *2;
 362
 363     int fArc;                  // flag for large or small arc 0 means less than 180 degrees
 364     if ( fabs(theta2 - theta1) > M_PI ) fArc = 1; else fArc = 0;
 365
 366     int fSweep = 0;             // flag for sweep always 0
 367
 368     s.Printf ( wxT("<path d=\"M%d %d A%s %s 0.0 %d %d %d %d L%d %d z "),
 369         x1,y1, NumStr(r1), NumStr(r2), fArc, fSweep, x2, y2, xc, yc );
 370
 371     // the z means close the path and fill
 372     s = s + wxT(" \" /> \n");
 373
 374
 375     if (m_OK)
 376     {
 377         write(s);
 378     }
 379
 380     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawArc Call executed"));
 381 }
 382
 383 void wxSVGFileDCImpl::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea)
 384 {
 385     /*
 386     Draws an arc of an ellipse. The current pen is used for drawing the arc
 387     and the current brush is used for drawing the pie. This function is
 388     currently only available for X window and PostScript device contexts.
 389
 390     x and y specify the x and y coordinates of the upper-left corner of the
 391     rectangle that contains the ellipse.
 392
 393     width and height specify the width and height of the rectangle that
 394     contains the ellipse.
 395
 396     start and end specify the start and end of the arc relative to the
 397     three-o'clock position from the center of the rectangle. Angles are
 398     specified in degrees (360 is a complete circle). Positive values mean
 399     counter-clockwise motion. If start is equal to end, a complete ellipse
 400     will be drawn. */
 401
 402     //known bug: SVG draws with the current pen along the radii, but this does not happen in wxMSW
 403
 404     if (m_graphics_changed) NewGraphics ();
 405
 406     wxString s;
 407     //radius
 408     double rx = w / 2;
 409     double ry = h / 2;
 410     // center
 411     double xc = x + rx;
 412     double yc = y + ry;
 413
 414     double xs, ys, xe, ye;
 415     xs = xc + rx * cos (DegToRad(sa));
 416     xe = xc + rx * cos (DegToRad(ea));
 417     ys = yc - ry * sin (DegToRad(sa));
 418     ye = yc - ry * sin (DegToRad(ea));
 419
 420     ///now same as circle arc...
 421
 422     double theta1 = atan2(ys-yc, xs-xc);
 423     double theta2 = atan2(ye-yc, xe-xc);
 424
 425     int fArc;                  // flag for large or small arc 0 means less than 180 degrees
 426     if ( (theta2 - theta1) > 0 ) fArc = 1; else fArc = 0;
 427
 428     int fSweep;
 429     if ( fabs(theta2 - theta1) > M_PI) fSweep = 1; else fSweep = 0;
 430
 431     s.Printf ( wxT("<path d=\"M%d %d A%d %d 0.0 %d %d  %d %d L %d %d z "),
 432         int(xs), int(ys), int(rx), int(ry),
 433         fArc, fSweep, int(xe), int(ye), int(xc), int(yc)  );
 434
 435     s = s + wxT(" \" /> \n");
 436
 437     if (m_OK)
 438     {
 439         write(s);
 440     }
 441
 442     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawEllipticArc Call executed"));
 443 }
 444
 445 void wxSVGFileDCImpl::DoGetTextExtent(const wxString& string, wxCoord *w, wxCoord *h, wxCoord *descent , wxCoord *externalLeading , const wxFont *font) const
 446
 447 {
 448     wxScreenDC sDC;
 449
 450     sDC.SetFont (m_font);
 451     if ( font != NULL ) sDC.SetFont ( *font );
 452     sDC.GetTextExtent(string, w,  h, descent, externalLeading );
 453     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::GetTextExtent Call executed"));
 454 }
 455
 456 wxCoord wxSVGFileDCImpl::GetCharHeight() const
 457
 458 {
 459     wxScreenDC sDC;
 460     sDC.SetFont (m_font);
 461
 462     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::GetCharHeight Call executing"));
 463     return ( sDC.GetCharHeight() );
 464
 465 }
 466
 467 wxCoord wxSVGFileDCImpl::GetCharWidth() const
 468 {
 469     wxScreenDC sDC;
 470     sDC.SetFont (m_font);
 471
 472     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::GetCharWidth Call executing"));
 473     return ( sDC.GetCharWidth() );
 474
 475 }
 476
 477
 478 // ----------------------------------------------------------
 479 // wxSVGFileDCImpl - set functions
 480 // ----------------------------------------------------------
 481
 482 void wxSVGFileDCImpl::SetBackground( const wxBrush &brush )
 483 {
 484
 485     m_backgroundBrush = brush;
 486     return;
 487 }
 488
 489
 490 void wxSVGFileDCImpl::SetBackgroundMode( int mode )
 491 {
 492     m_backgroundMode = mode;
 493     return;
 494 }
 495
 496
 497 void wxSVGFileDCImpl::SetBrush(const wxBrush& brush)
 498
 499 {
 500     m_brush = brush;
 501
 502     m_graphics_changed = true;
 503     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::SetBrush Call executed"));
 504 }
 505
 506
 507 void wxSVGFileDCImpl::SetPen(const wxPen& pen)
 508 {
 509     // width, color, ends, joins : currently implemented
 510     // dashes, stipple :  not implemented
 511     m_pen = pen;
 512
 513     m_graphics_changed = true;
 514     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::SetPen Call executed"));
 515 }
 516
 517 void wxSVGFileDCImpl::NewGraphics ()
 518 {
 519
 520     int w = m_pen.GetWidth ();
 521     wxColour c = m_pen.GetColour ();
 522
 523     wxString s, sBrush, sPenCap, sPenJoin, sPenStyle, sLast, sWarn;
 524
 525     sBrush = wxT("</g>\n<g style=\"") + wxBrushString ( m_brush.GetColour (), m_brush.GetStyle () )
 526             + wxT("  stroke:") + c.GetAsString(wxC2S_HTML_SYNTAX) + wxT("; ");
 527
 528     switch ( m_pen.GetCap () )
 529     {
 530         case  wxCAP_PROJECTING :
 531             sPenCap = wxT("stroke-linecap:square; ");
 532             break;
 533         case  wxCAP_BUTT :
 534             sPenCap = wxT("stroke-linecap:butt; ");
 535             break;
 536         case    wxCAP_ROUND :
 537         default :
 538             sPenCap = wxT("stroke-linecap:round; ");
 539     };
 540     switch ( m_pen.GetJoin () )
 541     {
 542         case  wxJOIN_BEVEL :
 543             sPenJoin = wxT("stroke-linejoin:bevel; ");
 544             break;
 545         case  wxJOIN_MITER :
 546             sPenJoin = wxT("stroke-linejoin:miter; ");
 547             break;
 548         case    wxJOIN_ROUND :
 549         default :
 550             sPenJoin = wxT("stroke-linejoin:round; ");
 551     };
 552
 553     switch ( m_pen.GetStyle () )
 554     {
 555         case  wxPENSTYLE_SOLID :
 556             sPenStyle = wxT("stroke-opacity:1.0; stroke-opacity:1.0; ");
 557             break;
 558         case  wxPENSTYLE_TRANSPARENT :
 559             sPenStyle = wxT("stroke-opacity:0.0; stroke-opacity:0.0; ");
 560             break;
 561         default :
 562             wxASSERT_MSG(false, wxT("wxSVGFileDC::SetPen Call called to set a Style which is not available"));
 563             sWarn = sWarn + wxT("<!--- wxSVGFileDC::SetPen Call called to set a Style which is not available --> \n");
 564     }
 565
 566     sLast.Printf( wxT("stroke-width:%d\" \n   transform=\"translate(%s %s) scale(%s %s)\">"),
 567                 w, NumStr(m_logicalOriginX), NumStr(m_logicalOriginY), NumStr(m_scaleX), NumStr(m_scaleY)  );
 568
 569     s = sBrush + sPenCap + sPenJoin + sPenStyle + sLast + wxT("\n") + sWarn;
 570     write(s);
 571     m_graphics_changed = false;
 572     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::NewGraphics Call executed"));
 573 }
 574
 575
 576 void wxSVGFileDCImpl::SetFont(const wxFont& font)
 577
 578 {
 579     m_font = font;
 580
 581     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::SetFont Call executed"));
 582 }
 583
 584 // export a bitmap as a raster image in png
 585 bool wxSVGFileDCImpl::DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
 586                         wxDC* source, wxCoord xsrc, wxCoord ysrc,
 587                         wxRasterOperationMode logicalFunc /*= wxCOPY*/, bool useMask /*= false*/,
 588                         wxCoord /*xsrcMask = -1*/, wxCoord /*ysrcMask = -1*/)
 589 {
 590     if (logicalFunc != wxCOPY)
 591     {
 592         wxASSERT_MSG(false, wxT("wxSVGFileDC::DoBlit Call requested nonCopy mode; this is not possible"));
 593         return false;
 594     }
 595     if (useMask != false)
 596     {
 597         wxASSERT_MSG(false, wxT("wxSVGFileDC::DoBlit Call requested false mask; this is not possible"));
 598         return false;
 599     }
 600     wxBitmap myBitmap (width, height);
 601     wxMemoryDC memDC;
 602     memDC.SelectObject( myBitmap );
 603     memDC.Blit(0, 0, width, height, source, xsrc, ysrc);
 604     memDC.SelectObject( wxNullBitmap );
 605     DoDrawBitmap(myBitmap, xdest, ydest);
 606     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoBlit Call executed"));
 607     return false;
 608 }
 609
 610 void wxSVGFileDCImpl::DoDrawIcon(const class wxIcon & myIcon, wxCoord x, wxCoord y)
 611 {
 612     wxBitmap myBitmap (myIcon.GetWidth(), myIcon.GetHeight() );
 613     wxMemoryDC memDC;
 614     memDC.SelectObject( myBitmap );
 615     memDC.DrawIcon(myIcon,0,0);
 616     memDC.SelectObject( wxNullBitmap );
 617     DoDrawBitmap(myBitmap, x, y);
 618     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawIcon Call executed"));
 619     return;
 620 }
 621
 622 void wxSVGFileDCImpl::DoDrawBitmap(const class wxBitmap & bmp, wxCoord x, wxCoord y , bool  WXUNUSED(bTransparent) /*=0*/ )
 623 {
 624     if (m_graphics_changed) NewGraphics ();
 625
 626     wxString sTmp, s, sPNG;
 627     if ( wxImage::FindHandler(wxBITMAP_TYPE_PNG) == NULL )
 628         wxImage::AddHandler(new wxPNGHandler);
 629
 630 // create suitable file name
 631     sTmp.Printf ( wxT("_image%d.png"), m_sub_images);
 632     sPNG = m_filename.BeforeLast(wxT('.')) + sTmp;
 633     while (wxFile::Exists(sPNG) )
 634     {
 635         m_sub_images ++;
 636         sTmp.Printf ( wxT("_image%d.png"), m_sub_images);
 637         sPNG = m_filename.BeforeLast(wxT('.')) + sTmp;
 638     }
 639
 640 //create copy of bitmap (wxGTK doesn't like saving a constant bitmap)
 641     wxBitmap myBitmap = bmp;
 642 //save it
 643     bool bPNG_OK = myBitmap.SaveFile(sPNG,wxBITMAP_TYPE_PNG);
 644
 645 // reference the bitmap from the SVG doc
 646 // only use filename & ext
 647     sPNG = sPNG.AfterLast(wxFileName::GetPathSeparator());
 648
 649 // reference the bitmap from the SVG doc
 650     int w = myBitmap.GetWidth();
 651     int h = myBitmap.GetHeight();
 652     sTmp.Printf ( wxT(" <image x=\"%d\" y=\"%d\" width=\"%dpx\" height=\"%dpx\" "), x,y,w,h );
 653     s = s + sTmp;
 654     sTmp.Printf ( wxT(" xlink:href=\"%s\"> \n"), sPNG.c_str() );
 655     s = s + sTmp + wxT("<title>Image from wxSVG</title>  </image>") + wxT("\n");
 656
 657     if (m_OK && bPNG_OK)
 658     {
 659         write(s);
 660     }
 661     m_OK = m_outfile->Ok () && bPNG_OK;
 662     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawBitmap Call executed"));
 663
 664     return;
 665 }
 666
 667 void wxSVGFileDCImpl::write(const wxString &s)
 668 {
 669     const wxCharBuffer buf = s.utf8_str();
 670     m_outfile->Write(buf, strlen((const char *)buf));
 671     m_OK = m_outfile->Ok();
 672 }
 673
 674
 675 #ifdef __BORLANDC__
 676 #pragma warn .rch
 677 #pragma warn .ccc
 678 #endif
 679
 680 #endif // wxUSE_SVG
 681