src/common/dcsvg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        svg.cpp
   3 // Purpose:     SVG sample
   4 // Author:      Chris Elliott
   5 // Modified by:
   6 // RCS-ID:      $Id$
   7 // Licence:     wxWindows license
   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
  30 #define wxSVG_DEBUG FALSE
  31 // or TRUE to see the calls being executed
  32
  33 #define newline        wxString(wxT("\n"))
  34 #define space          wxString(wxT(" "))
  35 #define semicolon      wxString(wxT(";"))
  36 #define wx_round(a)    (int)((a)+.5)
  37
  38 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
  39
  40 wxString wxColStr ( wxColour c )
  41 {
  42     unsigned char r, g, b ;
  43     r = c.Red ();
  44     g = c.Green ();
  45     b = c. Blue ();
  46
  47     // possible Unicode bug here
  48     wxString s = wxDecToHex(r) + wxDecToHex(g) + wxDecToHex(b) ;
  49     return s ;
  50 }
  51
  52
  53 wxString wxBrushString ( wxColour c, int style )
  54 {
  55     wxString s = wxT("fill:#") + wxColStr (c)  + semicolon + space ;
  56     switch ( style )
  57     {
  58         case wxSOLID :
  59             s = s + wxT("fill-opacity:1.0; ");
  60             break ;
  61         case wxTRANSPARENT:
  62             s = s + wxT("fill-opacity:0.0; ");
  63             break ;
  64
  65         default :
  66             wxASSERT_MSG(FALSE, wxT("wxSVGFileDC::Requested Brush Style not available")) ;
  67
  68     }
  69     s = s + newline ;
  70     return s ;
  71 }
  72
  73 // ----------------------------------------------------------
  74 //   wxSVGFileDC
  75 // ----------------------------------------------------------
  76
  77 IMPLEMENT_ABSTRACT_CLASS(wxSVGFileImplDC, wxDC)
  78
  79 #if wxUSE_NEW_DC
  80     wxSVGFileImplDC::wxSVGFileImplDC( wxSVGFileDC *owner, const wxString &filename,
  81                      int width, int height, double dpi ) :
  82         wxImplDC( owner )
  83     {
  84         Init( filename, width, height, dpi );
  85     }
  86 #else
  87     wxSVGFileDC::wxSVGFileDC( const wxString &filename,
  88                  int width, int height, double dpi )
  89     {
  90         Init( filename, width, height, dpi );
  91     }
  92 #endif
  93
  94 void wxSVGFileImplDC::Init (const wxString &filename, int Width, int Height, double dpi)
  95 {
  96     m_width = Width ;
  97     m_height = Height ;
  98
  99     m_dpi = dpi;
 100
 101     m_OK = TRUE;
 102
 103     m_mm_to_pix_x = dpi/25.4;
 104     m_mm_to_pix_y = dpi/25.4;
 105
 106     m_backgroundBrush = *wxTRANSPARENT_BRUSH;
 107     m_textForegroundColour = *wxBLACK;
 108     m_textBackgroundColour = *wxWHITE;
 109     m_colour = wxColourDisplay();
 110
 111     m_pen   = *wxBLACK_PEN;
 112     m_font  = *wxNORMAL_FONT;
 113     m_brush = *wxWHITE_BRUSH;
 114
 115     m_graphics_changed = TRUE ;
 116
 117     ////////////////////code here
 118
 119     m_outfile = new wxFileOutputStream(filename) ;
 120     m_OK = m_outfile->Ok ();
 121     if (m_OK)
 122     {
 123         m_filename = filename ;
 124         m_sub_images = 0 ;
 125         wxString s ;
 126         s = wxT("<?xml version=\"1.0\" standalone=\"no\"?>") ; s = s + newline ;
 127         write(s);
 128         s = wxT("<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 20010904//EN\" ") + newline ;
 129         write(s);
 130         s = wxT("\"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd\"> ")+ newline ;
 131         write(s);
 132         s.Printf ( wxT("<svg width=\"%.2gcm\" height=\"%.2gcm\" viewBox=\"0 0 %d %d \"> \n"), float(Width)/dpi*2.54, float(Height)/dpi*2.54, Width, Height );
 133         write(s);
 134         s = wxT("<title>SVG Picture created as ") + wxFileNameFromPath(filename) + wxT(" </title>") + newline ;
 135         write(s);
 136         s = wxString (wxT("<desc>Picture generated by wxSVG ")) + wxSVGVersion + wxT(" </desc>")+ newline ;
 137         write(s);
 138         s =  wxT("<g style=\"fill:black; stroke:black; stroke-width:1\">") + newline ;
 139         write(s);
 140
 141     }
 142 }
 143
 144
 145
 146 wxSVGFileImplDC::~wxSVGFileImplDC()
 147 {
 148     wxString s = wxT("</g> \n</svg> \n") ;
 149     write(s);
 150     delete m_outfile ;
 151 }
 152
 153 void wxSVGFileImplDC::DoGetSizeMM( int *width, int *height ) const
 154 {
 155     if (width)
 156         *width = wxRound( (double)m_width / m_mm_to_pix_x );
 157
 158     if (height)
 159         *height = wxRound( (double)m_height / m_mm_to_pix_y );
 160 }
 161
 162 wxSize wxSVGFileImplDC::GetPPI() const
 163 {
 164     return wxSize( wxRound(m_dpi), wxRound(m_dpi) );
 165 }
 166
 167 void wxSVGFileImplDC::DoDrawLine (wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
 168 {
 169     if (m_graphics_changed) NewGraphics ();
 170     wxString s ;
 171     s.Printf ( wxT("<path d=\"M%d %d L%d %d\" /> \n"), x1,y1,x2,y2 );
 172     if (m_OK)
 173     {
 174         write(s);
 175     }
 176     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DrawLine Call executed")) ;
 177     CalcBoundingBox(x1, y1) ;
 178     CalcBoundingBox(x2, y2) ;
 179     return;
 180 }
 181
 182 void wxSVGFileImplDC::DoDrawLines(int n, wxPoint points[], wxCoord xoffset , wxCoord yoffset )
 183 {
 184     for ( int i = 1; i < n ; i++ )
 185     {
 186         DoDrawLine ( points [i-1].x + xoffset, points [i-1].y + yoffset,
 187             points [ i ].x + xoffset, points [ i ].y + yoffset ) ;
 188     }
 189 }
 190
 191
 192 void wxSVGFileImplDC::DoDrawPoint (wxCoord x1, wxCoord y1)
 193 {
 194     wxString s;
 195     if (m_graphics_changed) NewGraphics ();
 196     s = wxT("<g style = \"stroke-linecap:round;\" > ") + newline ;
 197     write(s);
 198     DoDrawLine ( x1,y1,x1,y1 );
 199     s = wxT("</g>");
 200     write(s);
 201 }
 202
 203
 204 void wxSVGFileImplDC::DoDrawCheckMark(wxCoord x1, wxCoord y1, wxCoord width, wxCoord height)
 205 {
 206 #if wxUSE_NEW_DC
 207     wxImplDC::DoDrawCheckMark (x1,y1,width,height) ;
 208 #else
 209     wxDCBase::DoDrawCheckMark (x1,y1,width,height) ;
 210 #endif
 211 }
 212
 213
 214 void wxSVGFileImplDC::DoDrawText(const wxString& text, wxCoord x1, wxCoord y1)
 215 {
 216     DoDrawRotatedText(text, x1,y1,0.0);
 217     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DrawText Call executed")) ;
 218 }
 219
 220
 221 void wxSVGFileImplDC::DoDrawRotatedText(const wxString& sText, wxCoord x, wxCoord y, double angle)
 222 {
 223     //known bug; if the font is drawn in a scaled DC, it will not behave exactly as wxMSW
 224     if (m_graphics_changed) NewGraphics ();
 225     wxString s, sTmp;
 226
 227     // calculate bounding box
 228     wxCoord w, h, desc ;
 229     DoGetTextExtent(sText, &w, &h, &desc);
 230
 231     double rad = DegToRad(angle);
 232
 233     // wxT("upper left") and wxT("upper right")
 234     CalcBoundingBox(x, y);
 235     CalcBoundingBox((wxCoord)(x + w*cos(rad)), (wxCoord)(y - h*sin(rad)));
 236
 237     // wxT("bottom left") and wxT("bottom right")
 238     x += (wxCoord)(h*sin(rad));
 239     y += (wxCoord)(h*cos(rad));
 240     CalcBoundingBox(x, y);
 241     CalcBoundingBox((wxCoord)(x + h*sin(rad)), (wxCoord)(y + h*cos(rad)));
 242
 243     if (m_backgroundMode == wxSOLID)
 244     {
 245         // draw background first
 246         // just like DoDrawRectangle except we pass the text color to it and set the border to a 1 pixel wide text background
 247
 248         wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::Draw Rotated Text Call plotting text background")) ;
 249         sTmp.Printf ( wxT(" <rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\"  "), x,y+desc-h, w, h );
 250         s = sTmp + wxT("style=\"fill:#") + wxColStr (m_textBackgroundColour) + wxT("; ") ;
 251         s = s + wxT("stroke-width:1; stroke:#") + wxColStr (m_textBackgroundColour) + wxT("; ") ;
 252         sTmp.Printf ( wxT("\" transform=\"rotate( %.2g %d %d )  \">"), -angle, x,y ) ;
 253         s = s + sTmp + newline ;
 254         write(s);
 255     }
 256     //now do the text itself
 257     s.Printf (wxT(" <text x=\"%d\" y=\"%d\" "),x,y );
 258
 259     sTmp = m_font.GetFaceName () ;
 260     if (sTmp.Len () > 0)  s = s + wxT("style=\"font-family:") + sTmp + wxT("; ");
 261     else s = s + wxT("style=\" ") ;
 262
 263     wxString fontweights [3] = { wxT("normal"), wxT("lighter"), wxT("bold") };
 264     s = s + wxT("font-weight:") + fontweights[m_font.GetWeight() - wxNORMAL] + semicolon + space;
 265
 266     wxString fontstyles [5] = { wxT("normal"), wxT("style error"), wxT("style error"), wxT("italic"), wxT("oblique") };
 267     s = s + wxT("font-style:") + fontstyles[m_font.GetStyle() - wxNORMAL] + semicolon  + space;
 268
 269     sTmp.Printf (wxT("font-size:%dpt; fill:#"), m_font.GetPointSize () );
 270     s = s + sTmp ;
 271     s = s + wxColStr (m_textForegroundColour) + wxT("; stroke:#") + wxColStr (m_textForegroundColour) + wxT("; ") ;
 272     sTmp.Printf ( wxT("stroke-width:0;\"  transform=\"rotate( %.2g %d %d )  \" >"),  -angle, x,y ) ;
 273     s = s + sTmp + sText + wxT("</text> ") + newline ;
 274     if (m_OK)
 275     {
 276         write(s);
 277     }
 278     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DrawRotatedText Call executed")) ;
 279
 280 }
 281
 282
 283 void wxSVGFileImplDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 284 {
 285     DoDrawRoundedRectangle(x, y, width, height, 0)  ;
 286 }
 287
 288
 289 void wxSVGFileImplDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
 290
 291 {
 292     if (m_graphics_changed) NewGraphics ();
 293     wxString s ;
 294
 295     s.Printf ( wxT(" <rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" rx=\"%.2g\" "),
 296                x, y, width, height, radius );
 297
 298     s = s + wxT(" /> ") + newline ;
 299     write(s);
 300
 301     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawRoundedRectangle Call executed")) ;
 302     CalcBoundingBox(x, y) ;
 303     CalcBoundingBox(x + width, y + height) ;
 304
 305 }
 306
 307
 308 void wxSVGFileImplDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset,int fillStyle)
 309 {
 310     if (m_graphics_changed) NewGraphics ();
 311     wxString s, sTmp ;
 312     s = wxT("<polygon style=\"") ;
 313     if ( fillStyle == wxODDEVEN_RULE )
 314         s = s + wxT("fill-rule:evenodd; ");
 315     else
 316         s = s + wxT("fill-rule:nonzero; ");
 317
 318     s = s  + wxT("\" \npoints=\"") ;
 319
 320     for (int i = 0; i < n;  i++)
 321     {
 322         sTmp.Printf ( wxT("%d,%d"), points [i].x+xoffset, points[i].y+yoffset );
 323         s = s + sTmp + newline ;
 324         CalcBoundingBox ( points [i].x+xoffset, points[i].y+yoffset);
 325     }
 326     s = s + wxT("\" /> ") ;
 327     s = s + newline ;
 328     write(s);
 329
 330     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawPolygon Call executed")) ;
 331 }
 332
 333
 334 void wxSVGFileImplDC::DoDrawEllipse (wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 335
 336 {
 337     if (m_graphics_changed) NewGraphics ();
 338
 339     int rh = height /2 ;
 340     int rw = width  /2 ;
 341
 342     wxString s;
 343     s.Printf ( wxT("<ellipse cx=\"%d\" cy=\"%d\" rx=\"%d\" ry=\"%d\" "), x+rw,y+rh, rw, rh );
 344     s = s + wxT(" /> ") + newline ;
 345
 346     write(s);
 347
 348     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawEllipse Call executed")) ;
 349     CalcBoundingBox(x, y) ;
 350     CalcBoundingBox(x + width, y + height) ;
 351 }
 352
 353
 354 void wxSVGFileImplDC::DoDrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord xc, wxCoord yc)
 355 {
 356     /* Draws an arc of a circle, centred on (xc, yc), with starting point
 357     (x1, y1) and ending at (x2, y2). The current pen is used for the outline
 358     and the current brush for filling the shape.
 359
 360     The arc is drawn in an anticlockwise direction from the start point to
 361     the end point.
 362
 363     Might be better described as Pie drawing */
 364
 365     if (m_graphics_changed) NewGraphics ();
 366     wxString s ;
 367
 368     // we need the radius of the circle which has two estimates
 369     double r1 = sqrt ( double( (x1-xc)*(x1-xc) ) + double( (y1-yc)*(y1-yc) ) );
 370     double r2 = sqrt ( double( (x2-xc)*(x2-xc) ) + double( (y2-yc)*(y2-yc) ) );
 371
 372     wxASSERT_MSG( (fabs ( r2-r1 ) <= 3), wxT("wxSVGFileDC::DoDrawArc Error in getting radii of circle")) ;
 373     if ( fabs ( r2-r1 ) > 3 )    //pixels
 374     {
 375         s = wxT("<!--- wxSVGFileDC::DoDrawArc Error in getting radii of circle --> \n") ;
 376         write(s);
 377     }
 378
 379     double theta1 = atan2((double)(yc-y1),(double)(x1-xc));
 380     if ( theta1 < 0 ) theta1 = theta1 + M_PI * 2;
 381     double theta2 = atan2((double)(yc-y2), (double)(x2-xc));
 382     if ( theta2 < 0 ) theta2 = theta2 + M_PI * 2;
 383     if ( theta2 < theta1 ) theta2 = theta2 + M_PI *2 ;
 384
 385     int fArc  ;                  // flag for large or small arc 0 means less than 180 degrees
 386     if ( fabs(theta2 - theta1) > M_PI ) fArc = 1; else fArc = 0 ;
 387
 388     int fSweep = 0 ;             // flag for sweep always 0
 389
 390     s.Printf ( wxT("<path d=\"M%d %d A%.2g %.2g 0.0 %d %d %d %d L%d %d z "),
 391         x1,y1, r1, r2, fArc, fSweep, x2, y2, xc, yc );
 392
 393     // the z means close the path and fill
 394     s = s + wxT(" \" /> ") + newline ;
 395
 396
 397     if (m_OK)
 398     {
 399         write(s);
 400     }
 401
 402     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawArc Call executed")) ;
 403 }
 404
 405
 406 void wxSVGFileImplDC::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea)
 407 {
 408     /*
 409     Draws an arc of an ellipse. The current pen is used for drawing the arc
 410     and the current brush is used for drawing the pie. This function is
 411     currently only available for X window and PostScript device contexts.
 412
 413     x and y specify the x and y coordinates of the upper-left corner of the
 414     rectangle that contains the ellipse.
 415
 416     width and height specify the width and height of the rectangle that
 417     contains the ellipse.
 418
 419     start and end specify the start and end of the arc relative to the
 420     three-o'clock position from the center of the rectangle. Angles are
 421     specified in degrees (360 is a complete circle). Positive values mean
 422     counter-clockwise motion. If start is equal to end, a complete ellipse
 423     will be drawn. */
 424
 425     //known bug: SVG draws with the current pen along the radii, but this does not happen in wxMSW
 426
 427     if (m_graphics_changed) NewGraphics ();
 428
 429     wxString s ;
 430     //radius
 431     double rx = w / 2 ;
 432     double ry = h / 2 ;
 433     // center
 434     double xc = x + rx ;
 435     double yc = y + ry ;
 436
 437     double xs, ys, xe, ye ;
 438     xs = xc + rx * cos (DegToRad(sa)) ;
 439     xe = xc + rx * cos (DegToRad(ea)) ;
 440     ys = yc - ry * sin (DegToRad(sa)) ;
 441     ye = yc - ry * sin (DegToRad(ea)) ;
 442
 443     ///now same as circle arc...
 444
 445     double theta1 = atan2(ys-yc, xs-xc);
 446     double theta2 = atan2(ye-yc, xe-xc);
 447
 448     int fArc  ;                  // flag for large or small arc 0 means less than 180 degrees
 449     if ( (theta2 - theta1) > 0 ) fArc = 1; else fArc = 0 ;
 450
 451     int fSweep ;
 452     if ( fabs(theta2 - theta1) > M_PI) fSweep = 1; else fSweep = 0 ;
 453
 454     s.Printf ( wxT("<path d=\"M%d %d A%d %d 0.0 %d %d  %d %d L %d %d z "),
 455         int(xs), int(ys), int(rx), int(ry),
 456         fArc, fSweep, int(xe), int(ye), int(xc), int(yc)  );
 457
 458
 459     s = s + wxT(" \" /> ") + newline ;
 460
 461     if (m_OK)
 462     {
 463         write(s);
 464     }
 465
 466     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawEllipticArc Call executed")) ;
 467 }
 468
 469
 470 void wxSVGFileImplDC::DoGetTextExtent(const wxString& string, wxCoord *w, wxCoord *h, wxCoord *descent , wxCoord *externalLeading , const wxFont *font) const
 471
 472 {
 473     wxScreenDC sDC ;
 474
 475     sDC.SetFont (m_font);
 476     if ( font != NULL ) sDC.SetFont ( *font );
 477     sDC.GetTextExtent(string, w,  h, descent, externalLeading );
 478     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::GetTextExtent Call executed")) ;
 479 }
 480
 481
 482 wxCoord wxSVGFileImplDC::GetCharHeight() const
 483
 484 {
 485     wxScreenDC sDC ;
 486     sDC.SetFont (m_font);
 487
 488     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::GetCharHeight Call executing")) ;
 489     return ( sDC.GetCharHeight() );
 490
 491 }
 492
 493
 494 wxCoord wxSVGFileImplDC::GetCharWidth() const
 495 {
 496     wxScreenDC sDC ;
 497     sDC.SetFont (m_font);
 498
 499     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::GetCharWidth Call executing")) ;
 500     return ( sDC.GetCharWidth() ) ;
 501
 502 }
 503
 504
 505 /// Set Functions /////////////////////////////////////////////////////////////////
 506 void wxSVGFileImplDC::SetBackground( const wxBrush &brush )
 507 {
 508
 509     m_backgroundBrush = brush;
 510     return;
 511 }
 512
 513
 514 void wxSVGFileImplDC::SetBackgroundMode( int mode )
 515 {
 516     m_backgroundMode = mode;
 517     return;
 518 }
 519
 520
 521 void wxSVGFileImplDC::SetBrush(const wxBrush& brush)
 522
 523 {
 524     m_brush = brush ;
 525
 526     m_graphics_changed = TRUE ;
 527     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::SetBrush Call executed")) ;
 528 }
 529
 530
 531 void wxSVGFileImplDC::SetPen(const wxPen& pen)
 532 {
 533     // width, color, ends, joins : currently implemented
 534     // dashes, stipple :  not implemented
 535     m_pen = pen ;
 536
 537     m_graphics_changed = TRUE ;
 538     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::SetPen Call executed")) ;
 539 }
 540
 541 void wxSVGFileImplDC::NewGraphics ()
 542 {
 543
 544     int w = m_pen.GetWidth ();
 545     wxColour c = m_pen.GetColour () ;
 546
 547     wxString s, sBrush, sPenCap, sPenJoin, sPenStyle, sLast, sWarn;
 548
 549     sBrush = wxT("</g>\n<g style=\"") + wxBrushString ( m_brush.GetColour (), m_brush.GetStyle () )
 550              + wxT("  stroke:#") + wxColStr (c) + wxT("; ") ;
 551
 552     switch ( m_pen.GetCap () )
 553     {
 554         case  wxCAP_PROJECTING :
 555             sPenCap = wxT("stroke-linecap:square; ") ;
 556             break ;
 557         case  wxCAP_BUTT :
 558             sPenCap = wxT("stroke-linecap:butt; ") ;
 559             break ;
 560         case    wxCAP_ROUND :
 561         default :
 562             sPenCap = wxT("stroke-linecap:round; ") ;
 563     };
 564     switch ( m_pen.GetJoin () )
 565     {
 566         case  wxJOIN_BEVEL :
 567             sPenJoin = wxT("stroke-linejoin:bevel; ") ;
 568             break ;
 569         case  wxJOIN_MITER :
 570             sPenJoin = wxT("stroke-linejoin:miter; ") ;
 571             break ;
 572         case    wxJOIN_ROUND :
 573         default :
 574             sPenJoin = wxT("stroke-linejoin:round; ") ;
 575     };
 576
 577     switch ( m_pen.GetStyle () )
 578     {
 579         case  wxSOLID :
 580             sPenStyle = wxT("stroke-opacity:1.0; stroke-opacity:1.0; ") ;
 581             break ;
 582         case  wxTRANSPARENT :
 583             sPenStyle = wxT("stroke-opacity:0.0; stroke-opacity:0.0; ") ;
 584             break ;
 585         default :
 586             wxASSERT_MSG(FALSE, wxT("wxSVGFileDC::SetPen Call called to set a Style which is not available")) ;
 587             sWarn = sWarn + wxT("<!--- wxSVGFileDC::SetPen Call called to set a Style which is not available --> \n") ;
 588     }
 589
 590     sLast.Printf( wxT("stroke-width:%d\" \n   transform=\"translate(%.2g %.2g) scale(%.2g %.2g)\">"),
 591                   w, (double)m_logicalOriginX, m_logicalOriginY, m_scaleX, m_scaleY  );
 592
 593     s = sBrush + sPenCap + sPenJoin + sPenStyle + sLast + newline + sWarn;
 594     write(s);
 595     m_graphics_changed = FALSE ;
 596     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::NewGraphics Call executed")) ;
 597 }
 598
 599
 600 void wxSVGFileImplDC::SetFont(const wxFont& font)
 601
 602 {
 603     m_font = font ;
 604
 605     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::SetFont Call executed")) ;
 606 }
 607
 608
 609 // export a bitmap as a raster image in png
 610 bool wxSVGFileImplDC::DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
 611                          wxDC* source, wxCoord xsrc, wxCoord ysrc,
 612                          int logicalFunc /*= wxCOPY*/, bool useMask /*= FALSE*/,
 613                          wxCoord /*xsrcMask = -1*/, wxCoord /*ysrcMask = -1*/)
 614 {
 615     if (logicalFunc != wxCOPY)
 616     {
 617         wxASSERT_MSG(FALSE, wxT("wxSVGFileDC::DoBlit Call requested nonCopy mode; this is not possible")) ;
 618         return FALSE ;
 619     }
 620     if (useMask != FALSE)
 621     {
 622         wxASSERT_MSG(FALSE, wxT("wxSVGFileDC::DoBlit Call requested False mask ; this is not possible")) ;
 623         return FALSE ;
 624     }
 625     wxBitmap myBitmap (width, height) ;
 626     wxMemoryDC memDC;
 627     memDC.SelectObject( myBitmap );
 628     memDC.Blit(0, 0, width, height, source, xsrc, ysrc);
 629     memDC.SelectObject( wxNullBitmap );
 630     DoDrawBitmap(myBitmap, xdest, ydest);
 631     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoBlit Call executed")) ;
 632     return FALSE ;
 633 }
 634
 635 void wxSVGFileImplDC::DoDrawIcon(const class wxIcon & myIcon, wxCoord x, wxCoord y)
 636 {
 637     wxBitmap myBitmap (myIcon.GetWidth(), myIcon.GetHeight() ) ;
 638     wxMemoryDC memDC;
 639     memDC.SelectObject( myBitmap );
 640     memDC.DrawIcon(myIcon,0,0);
 641     memDC.SelectObject( wxNullBitmap );
 642     DoDrawBitmap(myBitmap, x, y);
 643     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawIcon Call executed")) ;
 644     return ;
 645 }
 646
 647 void wxSVGFileImplDC::DoDrawBitmap(const class wxBitmap & bmp, wxCoord x, wxCoord y , bool  WXUNUSED(bTransparent) /*=0*/ )
 648 {
 649     if (m_graphics_changed) NewGraphics ();
 650
 651     wxString sTmp, s, sPNG ;
 652     if ( wxImage::FindHandler(wxBITMAP_TYPE_PNG) == NULL )
 653         wxImage::AddHandler(new wxPNGHandler);
 654
 655 // create suitable file name
 656     sTmp.Printf ( wxT("_image%d.png"), m_sub_images);
 657     sPNG = m_filename.BeforeLast(wxT('.')) + sTmp;
 658     while (wxFile::Exists(sPNG) )
 659     {
 660         m_sub_images ++ ;
 661         sTmp.Printf ( wxT("_image%d.png"), m_sub_images);
 662         sPNG = m_filename.BeforeLast(wxT('.')) + sTmp;
 663     }
 664
 665 //create copy of bitmap (wxGTK doesn't like saving a constant bitmap)
 666     wxBitmap myBitmap = bmp ;
 667 //save it
 668     bool bPNG_OK = myBitmap.SaveFile(sPNG,wxBITMAP_TYPE_PNG);
 669
 670 // refrence the bitmap from the SVG doc
 671     int w = myBitmap.GetWidth();
 672     int h = myBitmap.GetHeight();
 673     sTmp.Printf ( wxT(" <image x=\"%d\" y=\"%d\" width=\"%dpx\" height=\"%dpx\" "), x,y,w,h );
 674     s = s + sTmp ;
 675     sTmp.Printf ( wxT(" xlink:href=\"%s\"> \n"), sPNG.c_str() );
 676     s = s + sTmp + wxT("<title>Image from wxSVG</title>  </image>") + newline;
 677
 678     if (m_OK && bPNG_OK)
 679     {
 680         write(s);
 681     }
 682     m_OK = m_outfile->Ok () && bPNG_OK;
 683     wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawBitmap Call executed")) ;
 684
 685     return  ;
 686 }
 687
 688 void wxSVGFileImplDC::write(const wxString &s)
 689 {
 690     const wxCharBuffer buf = s.utf8_str();
 691     m_outfile->Write(buf, strlen((const char *)buf));
 692     m_OK = m_outfile->Ok();
 693 }
 694
 695 // ---------------------------------------------------------------------------
 696 // coordinates transformations
 697 // ---------------------------------------------------------------------------
 698
 699 #if wxUSE_NEW_DC
 700 #else
 701 void wxSVGFileImplDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
 702 {
 703     wxDCBase::SetAxisOrientation( xLeftRight, yBottomUp );
 704 }
 705
 706 void wxSVGFileImplDC::SetMapMode(int mode)
 707 {
 708     wxDCBase::SetMapMode(mode);
 709 }
 710
 711 void wxSVGFileImplDC::SetUserScale(double x, double y)
 712 {
 713     wxDCBase::SetUserScale(x,y);
 714 }
 715
 716 void wxSVGFileImplDC::SetLogicalScale(double x, double y)
 717 {
 718     wxDCBase::SetLogicalScale(x,y);
 719 }
 720
 721 void wxSVGFileImplDC::SetLogicalOrigin(wxCoord x, wxCoord y)
 722 {
 723     wxDCBase::SetLogicalOrigin(x,y);
 724 }
 725
 726 void wxSVGFileImplDC::SetDeviceOrigin(wxCoord x, wxCoord y)
 727 {
 728     wxDCBase::SetDeviceOrigin(x,y);
 729 }
 730 #endif
 731
 732
 733 #ifdef __BORLANDC__
 734 #pragma warn .rch
 735 #pragma warn .ccc
 736 #endif
 737
 738 #endif // wxUSE_SVG
 739