Converting SVG to PNG using C

Question

I ve been trying to convert SVG images to PNG using C   without having to write too much code  Can anyone recommend a library or example code for doing this

User · Answer

you can use altsoft xml2pdf lib for this

User · Answer

There is a much easier way using the library http   svg codeplex com   Newer version  GIT   NuGet    Here is my code  var byteArray   Encoding ASCII GetBytes svgFileContents   using  var stream   new MemoryStream byteArray         var svgDocument   SvgDocument Open stream       var bitmap   svgDocument Draw        bitmap Save path  ImageFormat Png

User · Answer

When I had to rasterize svgs on the server  I ended up using P Invoke to call librsvg functions  you can get the dlls from a windows version of the GIMP image editing program     DllImport  kernel32 dll   SetLastError   true   static extern bool SetDllDirectory string pathname     DllImport  libgobject-2 0-0 dll   SetLastError   true   static extern void g type init       DllImport  librsvg-2-2 dll   SetLastError   true   static extern IntPtr rsvg pixbuf from file at size string file name  int width  int height  out IntPtr error     DllImport  libgdk pixbuf-2 0-0 dll   CallingConvention   CallingConvention Cdecl  CharSet   CharSet Ansi   static extern bool gdk pixbuf save IntPtr pixbuf  string filename  string type  out IntPtr error    arglist    public static void RasterizeSvg string inputFileName  string outputFileName        bool callSuccessful   SetDllDirectory  C   Program Files  GIMP-2 0  bin        if   callSuccessful                throw new Exception  Could not set DLL directory              g type init        IntPtr error      IntPtr result   rsvg pixbuf from file at size inputFileName  -1  -1  out error       if  error    IntPtr Zero                throw new Exception Marshal ReadInt32 error  ToString               callSuccessful   gdk pixbuf save result  outputFileName   png   out error    arglist null        if   callSuccessful                throw new Exception error ToInt32   ToString

User · Answer

I m using Batik for this  The complete Delphi code   procedure ExecNewProcess ProgramName   String  Wait  Boolean   var   StartInfo   TStartupInfo    ProcInfo   TProcessInformation    CreateOK   Boolean  begin   FillChar StartInfo  SizeOf TStartupInfo    0     FillChar ProcInfo  SizeOf TProcessInformation    0     StartInfo cb    SizeOf TStartupInfo     CreateOK    CreateProcess nil  PChar ProgramName   nil  nil  False                CREATE NEW PROCESS GROUP   NORMAL PRIORITY CLASS                nil  nil  StartInfo  ProcInfo     if CreateOK then begin       may or may not be needed  Usually wait for child processes     if Wait then       WaitForSingleObject ProcInfo hProcess  INFINITE     end else     ShowMessage  Unable to run     ProgramName      CloseHandle ProcInfo hProcess     CloseHandle ProcInfo hThread   end   procedure ConvertSVGtoPNG aFilename  String   const   ExecLine    c  windows system32 java exe -jar C  Apps batik-1 7 batik-rasterizer jar    begin   ExecNewProcess ExecLine   aFilename  True   end

User · Answer

To add to the response from  Anish  if you are having issues with not seeing the text when exporting the SVG to an image  you can create a recursive function to loop through the children of the SVGDocument  try to cast it to a SvgText if possible  add your own error checking  and set the font family and style       foreach var child in svgDocument Children                SetFont child              public void SetFont SvgElement element                foreach var child in element Children                        SetFont child     Call this function again with the child  this will loop                               until the element has no more children                    try                       var svgText    SvgText parent    try to cast the element as a SvgText                                              if it succeeds you can modify the font              svgText Font   new Font  Arial   12 0f               svgText FontSize   new SvgUnit 12 0f                     catch                              Let me know if there are questions

User · Answer

You can call the command-line version of inkscape to do this   http   harriyott com 2008 05 converting-svg-images-to-png-in-c aspx  Also there is a C  SVG rendering engine  primarily designed to allow SVG files to be used on the web on codeplex that might suit your needs if that is your problem   Original Project http   www codeplex com svg  Fork with fixes and more activity   added 7 2013  https   github com vvvv SVG

[c#] Converting SVG to PNG using C#

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