Fix wxHtmlHelpData::SetTempDir() to behave correctly without trailing slash.

[wxWidgets.git] / src / common / dcsvg.cpp

diff --git a/src/common/dcsvg.cpp b/src/common/dcsvg.cpp
index 3a9a945d0a54439a2ef7c0d4e575e6c719f6360d..6fd0c2a46f4d1c30e37a1daf1a8f2a11a6c943f6 100644 (file)
--- a/src/common/dcsvg.cpp
+++ b/src/common/dcsvg.cpp
@@ -3,7 +3,6 @@
 // Purpose:     SVG sample
 // Author:      Chris Elliott
 // Modified by:
 // Purpose:     SVG sample
 // Author:      Chris Elliott
 // Modified by:

-// RCS-ID:      $Id$

 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 


@@ -28,9 +27,6 @@
 #include "wx/wfstream.h"
 #include "wx/filename.h"
 
 #include "wx/wfstream.h"
 #include "wx/filename.h"
 

-#define wxSVG_DEBUG false
-// or true to see the calls being executed
-

 // ----------------------------------------------------------
 // Global utilities
 // ----------------------------------------------------------
 // ----------------------------------------------------------
 // Global utilities
 // ----------------------------------------------------------


@@ -40,33 +36,73 @@ namespace
 
 inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
 
 
 inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
 

-wxString wxBrushString ( wxColour c, int style )
+// This function returns a string representation of a floating point number in
+// C locale (i.e. always using "." for the decimal separator) and with the
+// fixed precision (which is 2 for some unknown reason but this is what it was
+// in this code originally).
+inline wxString NumStr(double f)

 {
 {

-    wxString s = wxT("fill:") + c.GetAsString(wxC2S_HTML_SYNTAX)  + wxT("; ");
+    return wxString::FromCDouble(f, 2);
+}
+
+// Return the colour representation as HTML-like "#rrggbb" string and also
+// returns its alpha as opacity number in 0..1 range.
+wxString Col2SVG(wxColour c, float *opacity)
+{
+    if ( c.Alpha() != wxALPHA_OPAQUE )
+    {
+        *opacity = c.Alpha()/255.;
+
+        // Remove the alpha before using GetAsString(wxC2S_HTML_SYNTAX) as it
+        // doesn't support colours with alpha channel.
+        c = wxColour(c.GetRGB());
+    }
+    else // No alpha.
+    {
+        *opacity = 1.;
+    }
+
+    return c.GetAsString(wxC2S_HTML_SYNTAX);
+}
+
+wxString wxPenString(wxColour c, int style = wxPENSTYLE_SOLID)
+{
+    float opacity;
+    wxString s = wxT("stroke:") + Col2SVG(c, &opacity)  + wxT("; ");
+

     switch ( style )
     {
     switch ( style )
     {

-        case wxBRUSHSTYLE_SOLID :
-            s = s + wxT("fill-opacity:1.0; ");
+        case wxPENSTYLE_SOLID:
+            s += wxString::Format(wxT("stroke-opacity:%s; "), NumStr(opacity));

             break;
             break;

-        case wxBRUSHSTYLE_TRANSPARENT:
-            s = s + wxT("fill-opacity:0.0; ");
+        case wxPENSTYLE_TRANSPARENT:
+            s += wxT("stroke-opacity:0.0; ");

             break;
             break;

-

         default :
         default :

-            wxASSERT_MSG(false, wxT("wxSVGFileDC::Requested Brush Style not available"));
-
+            wxASSERT_MSG(false, wxT("wxSVGFileDC::Requested Pen Style not available"));

     }
     }

-    s = s + wxT("\n");
+

     return s;
 }
 
     return s;
 }
 

-// This function returns a string representation of a floating point number in
-// C locale (i.e. always using "." for the decimal separator) and with the
-// fixed precision (which is 2 for some unknown reason but this is what it was
-// in this code originally).
-inline wxString NumStr(double f)
+wxString wxBrushString(wxColour c, int style = wxBRUSHSTYLE_SOLID)

 {
 {

-    return wxString::FromCDouble(f, 2);
+    float opacity;
+    wxString s = wxT("fill:") + Col2SVG(c, &opacity)  + wxT("; ");
+
+    switch ( style )
+    {
+        case wxBRUSHSTYLE_SOLID:
+            s += wxString::Format(wxT("fill-opacity:%s; "), NumStr(opacity));
+            break;
+        case wxBRUSHSTYLE_TRANSPARENT:
+            s += wxT("fill-opacity:0.0; ");
+            break;
+        default :
+            wxASSERT_MSG(false, wxT("wxSVGFileDC::Requested Brush Style not available"));
+    }
+
+    return s;

 }
 
 } // anonymous namespace
 }
 
 } // anonymous namespace


@@ -93,6 +129,9 @@ void wxSVGFileDCImpl::Init (const wxString &filename, int Width, int Height, dou
 
     m_OK = true;
 
 
     m_OK = true;
 

+    m_clipUniqueId = 0;
+    m_clipNestingLevel = 0;
+

     m_mm_to_pix_x = dpi/25.4;
     m_mm_to_pix_y = dpi/25.4;
 
     m_mm_to_pix_x = dpi/25.4;
     m_mm_to_pix_y = dpi/25.4;
 


@@ -110,27 +149,27 @@ void wxSVGFileDCImpl::Init (const wxString &filename, int Width, int Height, dou
     ////////////////////code here
 
     m_outfile = new wxFileOutputStream(filename);
     ////////////////////code here
 
     m_outfile = new wxFileOutputStream(filename);

-    m_OK = m_outfile->Ok ();
+    m_OK = m_outfile->IsOk();

     if (m_OK)
     {
         m_filename = filename;
         m_sub_images = 0;
         wxString s;
     if (m_OK)
     {
         m_filename = filename;
         m_sub_images = 0;
         wxString s;

-        s = wxT("<?xml version=\"1.0\" standalone=\"no\"?>") + wxString(wxT("\n"));
+        s = wxT("<?xml version=\"1.0\" standalone=\"no\"?>\n");

         write(s);
         write(s);

-        s = wxT("<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 20010904//EN\" ") + wxString(wxT("\n"));
+        s = wxT("<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 20010904//EN\"\n");

         write(s);
         write(s);

-        s = wxT("\"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd\"> ") + wxString(wxT("\n"));
+        s = wxT("\"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd\">\n");

         write(s);
         write(s);

-        s = wxT("<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" ") + wxString(wxT("\n"));
+        s = wxT("<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"\n");

         write(s);
         write(s);

-        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 );
+        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 );

         write(s);
         write(s);

-        s = wxT("<title>SVG Picture created as ") + wxFileName(filename).GetFullName() + wxT(" </title>") + wxT("\n");
+        s = wxT("<title>SVG Picture created as ") + wxFileName(filename).GetFullName() + wxT(" </title>\n");

         write(s);
         write(s);

-        s = wxString (wxT("<desc>Picture generated by wxSVG ")) + wxSVGVersion + wxT(" </desc>")+ wxT("\n");
+        s = wxString (wxT("<desc>Picture generated by wxSVG ")) + wxSVGVersion + wxT(" </desc>\n");

         write(s);
         write(s);

-        s =  wxT("<g style=\"fill:black; stroke:black; stroke-width:1\">") + wxString(wxT("\n"));
+        s =  wxT("<g style=\"fill:black; stroke:black; stroke-width:1\">\n");

         write(s);
     }
 }
         write(s);
     }
 }


@@ -158,20 +197,18 @@ wxSize wxSVGFileDCImpl::GetPPI() const
 
 void wxSVGFileDCImpl::DoDrawLine (wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
 {
 
 void wxSVGFileDCImpl::DoDrawLine (wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
 {

-    if (m_graphics_changed) NewGraphics ();
+    NewGraphicsIfNeeded();

     wxString s;
     s.Printf ( wxT("<path d=\"M%d %d L%d %d\" /> \n"), x1,y1,x2,y2 );
     if (m_OK)
     {
         write(s);
     }
     wxString s;
     s.Printf ( wxT("<path d=\"M%d %d L%d %d\" /> \n"), x1,y1,x2,y2 );
     if (m_OK)
     {
         write(s);
     }

-    wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DrawLine Call executed"));

     CalcBoundingBox(x1, y1);
     CalcBoundingBox(x2, y2);
     CalcBoundingBox(x1, y1);
     CalcBoundingBox(x2, y2);

-    return;

 }
 
 }
 

-void wxSVGFileDCImpl::DoDrawLines(int n, wxPoint points[], wxCoord xoffset , wxCoord yoffset )
+void wxSVGFileDCImpl::DoDrawLines(int n, const wxPoint points[], wxCoord xoffset , wxCoord yoffset )

 {
     for ( int i = 1; i < n; i++ )
     {
 {
     for ( int i = 1; i < n; i++ )
     {


@@ -183,8 +220,8 @@ void wxSVGFileDCImpl::DoDrawLines(int n, wxPoint points[], wxCoord xoffset , wxC
 void wxSVGFileDCImpl::DoDrawPoint (wxCoord x1, wxCoord y1)
 {
     wxString s;
 void wxSVGFileDCImpl::DoDrawPoint (wxCoord x1, wxCoord y1)
 {
     wxString s;

-    if (m_graphics_changed) NewGraphics ();
-    s = wxT("<g style = \"stroke-linecap:round;\" > ") + wxString(wxT("\n"));
+    NewGraphicsIfNeeded();
+    s = wxT("<g style = \"stroke-linecap:round;\" > \n");

     write(s);
     DoDrawLine ( x1,y1,x1,y1 );
     s = wxT("</g>");
     write(s);
     DoDrawLine ( x1,y1,x1,y1 );
     s = wxT("</g>");


@@ -199,13 +236,12 @@ void wxSVGFileDCImpl::DoDrawCheckMark(wxCoord x1, wxCoord y1, wxCoord width, wxC
 void wxSVGFileDCImpl::DoDrawText(const wxString& text, wxCoord x1, wxCoord y1)
 {
     DoDrawRotatedText(text, x1,y1,0.0);
 void wxSVGFileDCImpl::DoDrawText(const wxString& text, wxCoord x1, wxCoord y1)
 {
     DoDrawRotatedText(text, x1,y1,0.0);

-    wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DrawText Call executed"));

 }
 
 void wxSVGFileDCImpl::DoDrawRotatedText(const wxString& sText, wxCoord x, wxCoord y, double angle)
 {
     //known bug; if the font is drawn in a scaled DC, it will not behave exactly as wxMSW
 }
 
 void wxSVGFileDCImpl::DoDrawRotatedText(const wxString& sText, wxCoord x, wxCoord y, double angle)
 {
     //known bug; if the font is drawn in a scaled DC, it will not behave exactly as wxMSW

-    if (m_graphics_changed) NewGraphics ();
+    NewGraphicsIfNeeded();

     wxString s, sTmp;
 
     // calculate bounding box
     wxString s, sTmp;
 
     // calculate bounding box


@@ -219,47 +255,49 @@ void wxSVGFileDCImpl::DoDrawRotatedText(const wxString& sText, wxCoord x, wxCoor
     CalcBoundingBox((wxCoord)(x + w*cos(rad)), (wxCoord)(y - h*sin(rad)));
 
     // wxT("bottom left") and wxT("bottom right")
     CalcBoundingBox((wxCoord)(x + w*cos(rad)), (wxCoord)(y - h*sin(rad)));
 
     // wxT("bottom left") and wxT("bottom right")

-    x += (wxCoord)(h*sin(rad));
-    y += (wxCoord)(h*cos(rad));
-    CalcBoundingBox(x, y);

     CalcBoundingBox((wxCoord)(x + h*sin(rad)), (wxCoord)(y + h*cos(rad)));
     CalcBoundingBox((wxCoord)(x + h*sin(rad)), (wxCoord)(y + h*cos(rad)));

+    CalcBoundingBox((wxCoord)(x + h*sin(rad) + w*cos(rad)), (wxCoord)(y + h*cos(rad) - w*sin(rad)));

 
     if (m_backgroundMode == wxBRUSHSTYLE_SOLID)
     {
         // draw background first
         // just like DoDrawRectangle except we pass the text color to it and set the border to a 1 pixel wide text background
 
 
     if (m_backgroundMode == wxBRUSHSTYLE_SOLID)
     {
         // draw background first
         // just like DoDrawRectangle except we pass the text color to it and set the border to a 1 pixel wide text background
 

-        wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::Draw Rotated Text Call plotting text background"));
-        sTmp.Printf ( wxT(" <rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\"  "), x,y+desc-h, w, h );
-        s = sTmp + wxT("style=\"fill:") + m_textBackgroundColour.GetAsString(wxC2S_HTML_SYNTAX) + wxT("; ");
-        s = s + wxT("stroke-width:1; stroke:") + m_textBackgroundColour.GetAsString(wxC2S_HTML_SYNTAX) + wxT("; ");
-        sTmp.Printf ( wxT("\" transform=\"rotate( %s %d %d )  \">"), NumStr(-angle), x,y );
-        s = s + sTmp + wxT("\n");
+        sTmp.Printf ( wxT(" <rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" "), x, y, w, h );
+        s = sTmp + wxT("style=\"") + wxBrushString(m_textBackgroundColour);
+        s += wxT("stroke-width:1; ") + wxPenString(m_textBackgroundColour);
+        sTmp.Printf ( wxT("\" transform=\"rotate( %s %d %d )  \" />"), NumStr(-angle), x,y );
+        s += sTmp + wxT("\n");

         write(s);
     }
         write(s);
     }

+
+    // convert x,y to SVG text x,y (the coordinates of the text baseline)
+    x = (wxCoord)(x + (h-desc)*sin(rad));
+    y = (wxCoord)(y + (h-desc)*cos(rad));
+

     //now do the text itself
     s.Printf (wxT(" <text x=\"%d\" y=\"%d\" "),x,y );
 
     //now do the text itself
     s.Printf (wxT(" <text x=\"%d\" y=\"%d\" "),x,y );
 

-    sTmp = m_font.GetFaceName ();
-    if (sTmp.Len () > 0)  s = s + wxT("style=\"font-family:") + sTmp + wxT("; ");
-    else s = s + wxT("style=\" ");
+    sTmp = m_font.GetFaceName();
+    if (sTmp.Len() > 0)  s += wxT("style=\"font-family:") + sTmp + wxT("; ");
+    else s += wxT("style=\" ");

 
     wxString fontweights [3] = { wxT("normal"), wxT("lighter"), wxT("bold") };
 
     wxString fontweights [3] = { wxT("normal"), wxT("lighter"), wxT("bold") };

-    s = s + wxT("font-weight:") + fontweights[m_font.GetWeight() - wxNORMAL] + wxT("; ");
+    s += wxT("font-weight:") + fontweights[m_font.GetWeight() - wxNORMAL] + wxT("; ");

 
     wxString fontstyles [5] = { wxT("normal"), wxT("style error"), wxT("style error"), wxT("italic"), wxT("oblique") };
 
     wxString fontstyles [5] = { wxT("normal"), wxT("style error"), wxT("style error"), wxT("italic"), wxT("oblique") };

-    s = s + wxT("font-style:") + fontstyles[m_font.GetStyle() - wxNORMAL] + wxT("; ");
+    s += wxT("font-style:") + fontstyles[m_font.GetStyle() - wxNORMAL] + wxT("; ");

 
 

-    sTmp.Printf (wxT("font-size:%dpt; fill:"), m_font.GetPointSize () );
-    s = s + sTmp;
-    s = s + m_textForegroundColour.GetAsString(wxC2S_HTML_SYNTAX) + wxT("; stroke:") + m_textForegroundColour.GetAsString(wxC2S_HTML_SYNTAX) + wxT("; ");
+    sTmp.Printf (wxT("font-size:%dpt; "), m_font.GetPointSize() );
+    s += sTmp;
+    //text will be solid, unless alpha value isn't opaque in the foreground colour
+    s += wxBrushString(m_textForegroundColour) + wxPenString(m_textForegroundColour);

     sTmp.Printf ( wxT("stroke-width:0;\"  transform=\"rotate( %s %d %d )  \" >"),  NumStr(-angle), x,y );
     sTmp.Printf ( wxT("stroke-width:0;\"  transform=\"rotate( %s %d %d )  \" >"),  NumStr(-angle), x,y );

-    s = s + sTmp + sText + wxT("</text> ") + wxT("\n");
+    s += sTmp + sText + wxT("</text> ") + wxT("\n");

     if (m_OK)
     {
         write(s);
     }
     if (m_OK)
     {
         write(s);
     }

-    wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DrawRotatedText Call executed"));

 }
 
 void wxSVGFileDCImpl::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 }
 
 void wxSVGFileDCImpl::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)


@@ -270,61 +308,57 @@ void wxSVGFileDCImpl::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoo
 void wxSVGFileDCImpl::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
 
 {
 void wxSVGFileDCImpl::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
 
 {

-    if (m_graphics_changed) NewGraphics ();
+    NewGraphicsIfNeeded();

     wxString s;
 
     s.Printf ( wxT(" <rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" rx=\"%s\" "),
             x, y, width, height, NumStr(radius) );
 
     wxString s;
 
     s.Printf ( wxT(" <rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" rx=\"%s\" "),
             x, y, width, height, NumStr(radius) );
 

-    s = s + wxT(" /> \n");
+    s += wxT(" /> \n");

     write(s);
 
     write(s);
 

-    wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawRoundedRectangle Call executed"));

     CalcBoundingBox(x, y);
     CalcBoundingBox(x + width, y + height);
 }
 
     CalcBoundingBox(x, y);
     CalcBoundingBox(x + width, y + height);
 }
 

-void wxSVGFileDCImpl::DoDrawPolygon(int n, wxPoint points[],
+void wxSVGFileDCImpl::DoDrawPolygon(int n, const wxPoint points[],

                                     wxCoord xoffset, wxCoord yoffset,
                                     wxPolygonFillMode fillStyle)
 {
                                     wxCoord xoffset, wxCoord yoffset,
                                     wxPolygonFillMode fillStyle)
 {

-    if (m_graphics_changed) NewGraphics ();
+    NewGraphicsIfNeeded();

     wxString s, sTmp;
     s = wxT("<polygon style=\"");
     if ( fillStyle == wxODDEVEN_RULE )
     wxString s, sTmp;
     s = wxT("<polygon style=\"");
     if ( fillStyle == wxODDEVEN_RULE )

-        s = s + wxT("fill-rule:evenodd; ");
+        s += wxT("fill-rule:evenodd; ");

     else
     else

-        s = s + wxT("fill-rule:nonzero; ");
+        s += wxT("fill-rule:nonzero; ");

 
 

-    s = s + wxT("\" \npoints=\"");
+    s += wxT("\" \npoints=\"");

 
     for (int i = 0; i < n;  i++)
     {
         sTmp.Printf ( wxT("%d,%d"), points [i].x+xoffset, points[i].y+yoffset );
 
     for (int i = 0; i < n;  i++)
     {
         sTmp.Printf ( wxT("%d,%d"), points [i].x+xoffset, points[i].y+yoffset );

-        s = s + sTmp + wxT("\n");
+        s += sTmp + wxT("\n");

         CalcBoundingBox ( points [i].x+xoffset, points[i].y+yoffset);
     }
         CalcBoundingBox ( points [i].x+xoffset, points[i].y+yoffset);
     }

-    s = s + wxT("\" /> \n");
+    s += wxT("\" /> \n");

     write(s);
     write(s);

-
-    wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawPolygon Call executed"));

 }
 
 void wxSVGFileDCImpl::DoDrawEllipse (wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 
 {
 }
 
 void wxSVGFileDCImpl::DoDrawEllipse (wxCoord x, wxCoord y, wxCoord width, wxCoord height)
 
 {

-    if (m_graphics_changed) NewGraphics ();
+    NewGraphicsIfNeeded();

 
     int rh = height /2;
     int rw = width  /2;
 
     wxString s;
     s.Printf ( wxT("<ellipse cx=\"%d\" cy=\"%d\" rx=\"%d\" ry=\"%d\" "), x+rw,y+rh, rw, rh );
 
     int rh = height /2;
     int rw = width  /2;
 
     wxString s;
     s.Printf ( wxT("<ellipse cx=\"%d\" cy=\"%d\" rx=\"%d\" ry=\"%d\" "), x+rw,y+rh, rw, rh );

-    s = s + wxT(" /> \n");
+    s += wxT(" /> \n");

 
     write(s);
 
 
     write(s);
 

-    wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawEllipse Call executed"));

     CalcBoundingBox(x, y);
     CalcBoundingBox(x + width, y + height);
 }
     CalcBoundingBox(x, y);
     CalcBoundingBox(x + width, y + height);
 }


@@ -340,7 +374,7 @@ void wxSVGFileDCImpl::DoDrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
 
     Might be better described as Pie drawing */
 
 
     Might be better described as Pie drawing */
 

-    if (m_graphics_changed) NewGraphics ();
+    NewGraphicsIfNeeded();

     wxString s;
 
     // we need the radius of the circle which has two estimates
     wxString s;
 
     // we need the radius of the circle which has two estimates


@@ -369,15 +403,13 @@ void wxSVGFileDCImpl::DoDrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
         x1,y1, NumStr(r1), NumStr(r2), fArc, fSweep, x2, y2, xc, yc );
 
     // the z means close the path and fill
         x1,y1, NumStr(r1), NumStr(r2), fArc, fSweep, x2, y2, xc, yc );
 
     // the z means close the path and fill

-    s = s + wxT(" \" /> \n");
+    s += wxT(" \" /> \n");

 
 
     if (m_OK)
     {
         write(s);
     }
 
 
     if (m_OK)
     {
         write(s);
     }

-
-    wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawArc Call executed"));

 }
 
 void wxSVGFileDCImpl::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea)
 }
 
 void wxSVGFileDCImpl::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea)


@@ -401,7 +433,7 @@ void wxSVGFileDCImpl::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,
 
     //known bug: SVG draws with the current pen along the radii, but this does not happen in wxMSW
 
 
     //known bug: SVG draws with the current pen along the radii, but this does not happen in wxMSW
 

-    if (m_graphics_changed) NewGraphics ();
+    NewGraphicsIfNeeded();

 
     wxString s;
     //radius
 
     wxString s;
     //radius


@@ -432,14 +464,65 @@ void wxSVGFileDCImpl::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,
         int(xs), int(ys), int(rx), int(ry),
         fArc, fSweep, int(xe), int(ye), int(xc), int(yc)  );
 
         int(xs), int(ys), int(rx), int(ry),
         fArc, fSweep, int(xe), int(ye), int(xc), int(yc)  );
 

-    s = s + wxT(" \" /> \n");
+    s += wxT(" \" /> \n");

 
     if (m_OK)
     {
         write(s);
     }
 
     if (m_OK)
     {
         write(s);
     }

+}
+
+void wxSVGFileDCImpl::DoSetClippingRegion( int x,  int y, int width, int height )
+{
+    wxString svg;
+
+    // End current graphics group to ensure proper xml nesting (e.g. so that
+    // graphics can be subsequently changed inside the clipping region)
+    svg << "</g>\n"
+           "<defs>\n"
+           "<clipPath id=\"clip" << m_clipNestingLevel << "\">\n"
+           "<rect id=\"cliprect" << m_clipNestingLevel << "\" "
+                "x=\"" << x << "\" "
+                "y=\"" << y << "\" "
+                "width=\"" << width << "\" "
+                "height=\"" << height << "\" "
+                "style=\"stroke: gray; fill: none;\"/>\n"
+           "</clipPath>\n"
+           "</defs>\n"
+           "<g style=\"clip-path: url(#clip" << m_clipNestingLevel << ");\">\n";
+
+    write(svg);

 
 

-    wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawEllipticArc Call executed"));
+    // Re-apply current graphics to ensure proper xml nesting
+    DoStartNewGraphics();
+
+    m_clipUniqueId++;
+    m_clipNestingLevel++;
+}
+
+void wxSVGFileDCImpl::DestroyClippingRegion()
+{
+    wxString svg;
+
+    // End current graphics element to ensure proper xml nesting (e.g. graphics
+    // might have been changed inside the clipping region)
+    svg << "</g>\n";
+
+    // Close clipping group elements
+    for ( size_t i = 0; i < m_clipUniqueId; i++ )
+    {
+        svg << "</g>";
+    }
+    svg << "\n";
+
+    write(svg);
+
+    // Re-apply current graphics (e.g. brush may have been changed inside one
+    // of the clipped regions - that change will have been lost after xml
+    // elements for the clipped region have been closed).
+    DoStartNewGraphics();
+
+    m_clipUniqueId = 0;

 }
 
 void wxSVGFileDCImpl::DoGetTextExtent(const wxString& string, wxCoord *w, wxCoord *h, wxCoord *descent , wxCoord *externalLeading , const wxFont *font) const
 }
 
 void wxSVGFileDCImpl::DoGetTextExtent(const wxString& string, wxCoord *w, wxCoord *h, wxCoord *descent , wxCoord *externalLeading , const wxFont *font) const


@@ -450,17 +533,14 @@ void wxSVGFileDCImpl::DoGetTextExtent(const wxString& string, wxCoord *w, wxCoor
     sDC.SetFont (m_font);
     if ( font != NULL ) sDC.SetFont ( *font );
     sDC.GetTextExtent(string, w,  h, descent, externalLeading );
     sDC.SetFont (m_font);
     if ( font != NULL ) sDC.SetFont ( *font );
     sDC.GetTextExtent(string, w,  h, descent, externalLeading );

-    wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::GetTextExtent Call executed"));

 }
 
 wxCoord wxSVGFileDCImpl::GetCharHeight() const
 }
 
 wxCoord wxSVGFileDCImpl::GetCharHeight() const

-

 {
     wxScreenDC sDC;
     sDC.SetFont (m_font);
 
 {
     wxScreenDC sDC;
     sDC.SetFont (m_font);
 

-    wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::GetCharHeight Call executing"));
-    return ( sDC.GetCharHeight() );
+    return sDC.GetCharHeight();

 
 }
 
 
 }
 


@@ -469,9 +549,7 @@ wxCoord wxSVGFileDCImpl::GetCharWidth() const
     wxScreenDC sDC;
     sDC.SetFont (m_font);
 
     wxScreenDC sDC;
     sDC.SetFont (m_font);
 

-    wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::GetCharWidth Call executing"));
-    return ( sDC.GetCharWidth() );
-
+    return sDC.GetCharWidth();

 }
 
 
 }
 
 


@@ -481,26 +559,21 @@ wxCoord wxSVGFileDCImpl::GetCharWidth() const
 
 void wxSVGFileDCImpl::SetBackground( const wxBrush &brush )
 {
 
 void wxSVGFileDCImpl::SetBackground( const wxBrush &brush )
 {

-

     m_backgroundBrush = brush;
     m_backgroundBrush = brush;

-    return;

 }
 
 
 void wxSVGFileDCImpl::SetBackgroundMode( int mode )
 {
     m_backgroundMode = mode;
 }
 
 
 void wxSVGFileDCImpl::SetBackgroundMode( int mode )
 {
     m_backgroundMode = mode;

-    return;

 }
 
 
 void wxSVGFileDCImpl::SetBrush(const wxBrush& brush)
 }
 
 
 void wxSVGFileDCImpl::SetBrush(const wxBrush& brush)

-

 {
     m_brush = brush;
 
     m_graphics_changed = true;
 {
     m_brush = brush;
 
     m_graphics_changed = true;

-    wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::SetBrush Call executed"));

 }
 
 
 }
 
 


@@ -511,21 +584,28 @@ void wxSVGFileDCImpl::SetPen(const wxPen& pen)
     m_pen = pen;
 
     m_graphics_changed = true;
     m_pen = pen;
 
     m_graphics_changed = true;

-    wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::SetPen Call executed"));

 }
 
 }
 

-void wxSVGFileDCImpl::NewGraphics ()
+void wxSVGFileDCImpl::NewGraphicsIfNeeded()

 {
 {

+    if ( !m_graphics_changed )
+        return;

 
 

-    int w = m_pen.GetWidth ();
-    wxColour c = m_pen.GetColour ();
+    m_graphics_changed = false;
+
+    write(wxS("</g>\n"));

 
 

-    wxString s, sBrush, sPenCap, sPenJoin, sPenStyle, sLast, sWarn;
+    DoStartNewGraphics();
+}
+
+void wxSVGFileDCImpl::DoStartNewGraphics()
+{
+    wxString s, sBrush, sPenCap, sPenJoin, sPenStyle, sLast;

 
 

-    sBrush = wxT("</g>\n<g style=\"") + wxBrushString ( m_brush.GetColour (), m_brush.GetStyle () )
-            + wxT("  stroke:") + c.GetAsString(wxC2S_HTML_SYNTAX) + wxT("; ");
+    sBrush = wxS("<g style=\"") + wxBrushString ( m_brush.GetColour(), m_brush.GetStyle() )
+            + wxPenString(m_pen.GetColour(), m_pen.GetStyle());

 
 

-    switch ( m_pen.GetCap () )
+    switch ( m_pen.GetCap() )

     {
         case  wxCAP_PROJECTING :
             sPenCap = wxT("stroke-linecap:square; ");
     {
         case  wxCAP_PROJECTING :
             sPenCap = wxT("stroke-linecap:square; ");


@@ -536,8 +616,9 @@ void wxSVGFileDCImpl::NewGraphics ()
         case    wxCAP_ROUND :
         default :
             sPenCap = wxT("stroke-linecap:round; ");
         case    wxCAP_ROUND :
         default :
             sPenCap = wxT("stroke-linecap:round; ");

-    };
-    switch ( m_pen.GetJoin () )
+    }
+
+    switch ( m_pen.GetJoin() )

     {
         case  wxJOIN_BEVEL :
             sPenJoin = wxT("stroke-linejoin:bevel; ");
     {
         case  wxJOIN_BEVEL :
             sPenJoin = wxT("stroke-linejoin:bevel; ");


@@ -548,28 +629,13 @@ void wxSVGFileDCImpl::NewGraphics ()
         case    wxJOIN_ROUND :
         default :
             sPenJoin = wxT("stroke-linejoin:round; ");
         case    wxJOIN_ROUND :
         default :
             sPenJoin = wxT("stroke-linejoin:round; ");

-    };
-
-    switch ( m_pen.GetStyle () )
-    {
-        case  wxPENSTYLE_SOLID :
-            sPenStyle = wxT("stroke-opacity:1.0; stroke-opacity:1.0; ");
-            break;
-        case  wxPENSTYLE_TRANSPARENT :
-            sPenStyle = wxT("stroke-opacity:0.0; stroke-opacity:0.0; ");
-            break;
-        default :
-            wxASSERT_MSG(false, wxT("wxSVGFileDC::SetPen Call called to set a Style which is not available"));
-            sWarn = sWarn + wxT("<!--- wxSVGFileDC::SetPen Call called to set a Style which is not available --> \n");

     }
 
     sLast.Printf( wxT("stroke-width:%d\" \n   transform=\"translate(%s %s) scale(%s %s)\">"),
     }
 
     sLast.Printf( wxT("stroke-width:%d\" \n   transform=\"translate(%s %s) scale(%s %s)\">"),

-                w, NumStr(m_logicalOriginX), NumStr(m_logicalOriginY), NumStr(m_scaleX), NumStr(m_scaleY)  );
+                m_pen.GetWidth(), NumStr(m_logicalOriginX), NumStr(m_logicalOriginY), NumStr(m_scaleX), NumStr(m_scaleY)  );

 
 

-    s = sBrush + sPenCap + sPenJoin + sPenStyle + sLast + wxT("\n") + sWarn;
+    s = sBrush + sPenCap + sPenJoin + sPenStyle + sLast + wxT("\n");

     write(s);
     write(s);

-    m_graphics_changed = false;
-    wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::NewGraphics Call executed"));

 }
 
 
 }
 
 


@@ -577,8 +643,6 @@ void wxSVGFileDCImpl::SetFont(const wxFont& font)
 
 {
     m_font = font;
 
 {
     m_font = font;

-
-    wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::SetFont Call executed"));

 }
 
 // export a bitmap as a raster image in png
 }
 
 // export a bitmap as a raster image in png


@@ -603,7 +667,6 @@ bool wxSVGFileDCImpl::DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoor
     memDC.Blit(0, 0, width, height, source, xsrc, ysrc);
     memDC.SelectObject( wxNullBitmap );
     DoDrawBitmap(myBitmap, xdest, ydest);
     memDC.Blit(0, 0, width, height, source, xsrc, ysrc);
     memDC.SelectObject( wxNullBitmap );
     DoDrawBitmap(myBitmap, xdest, ydest);

-    wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoBlit Call executed"));

     return false;
 }
 
     return false;
 }
 


@@ -615,13 +678,11 @@ void wxSVGFileDCImpl::DoDrawIcon(const class wxIcon & myIcon, wxCoord x, wxCoord
     memDC.DrawIcon(myIcon,0,0);
     memDC.SelectObject( wxNullBitmap );
     DoDrawBitmap(myBitmap, x, y);
     memDC.DrawIcon(myIcon,0,0);
     memDC.SelectObject( wxNullBitmap );
     DoDrawBitmap(myBitmap, x, y);

-    wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawIcon Call executed"));
-    return;

 }
 
 void wxSVGFileDCImpl::DoDrawBitmap(const class wxBitmap & bmp, wxCoord x, wxCoord y , bool  WXUNUSED(bTransparent) /*=0*/ )
 {
 }
 
 void wxSVGFileDCImpl::DoDrawBitmap(const class wxBitmap & bmp, wxCoord x, wxCoord y , bool  WXUNUSED(bTransparent) /*=0*/ )
 {

-    if (m_graphics_changed) NewGraphics ();
+    NewGraphicsIfNeeded();

 
     wxString sTmp, s, sPNG;
     if ( wxImage::FindHandler(wxBITMAP_TYPE_PNG) == NULL )
 
     wxString sTmp, s, sPNG;
     if ( wxImage::FindHandler(wxBITMAP_TYPE_PNG) == NULL )


@@ -650,25 +711,22 @@ void wxSVGFileDCImpl::DoDrawBitmap(const class wxBitmap & bmp, wxCoord x, wxCoor
     int w = myBitmap.GetWidth();
     int h = myBitmap.GetHeight();
     sTmp.Printf ( wxT(" <image x=\"%d\" y=\"%d\" width=\"%dpx\" height=\"%dpx\" "), x,y,w,h );
     int w = myBitmap.GetWidth();
     int h = myBitmap.GetHeight();
     sTmp.Printf ( wxT(" <image x=\"%d\" y=\"%d\" width=\"%dpx\" height=\"%dpx\" "), x,y,w,h );

-    s = s + sTmp;
+    s += sTmp;

     sTmp.Printf ( wxT(" xlink:href=\"%s\"> \n"), sPNG.c_str() );
     sTmp.Printf ( wxT(" xlink:href=\"%s\"> \n"), sPNG.c_str() );

-    s = s + sTmp + wxT("<title>Image from wxSVG</title>  </image>") + wxT("\n");
+    s += sTmp + wxT("<title>Image from wxSVG</title>  </image>") + wxT("\n");

 
     if (m_OK && bPNG_OK)
     {
         write(s);
     }
 
     if (m_OK && bPNG_OK)
     {
         write(s);
     }

-    m_OK = m_outfile->Ok () && bPNG_OK;
-    wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawBitmap Call executed"));
-
-    return;
+    m_OK = m_outfile->IsOk() && bPNG_OK;

 }
 
 void wxSVGFileDCImpl::write(const wxString &s)
 {
     const wxCharBuffer buf = s.utf8_str();
     m_outfile->Write(buf, strlen((const char *)buf));
 }
 
 void wxSVGFileDCImpl::write(const wxString &s)
 {
     const wxCharBuffer buf = s.utf8_str();
     m_outfile->Write(buf, strlen((const char *)buf));

-    m_OK = m_outfile->Ok();
+    m_OK = m_outfile->IsOk();

 }
 
 
 }