[Gtk-sharp-list] new Gdk.Pixbuf (svg_stream) fails on windows but works on unix

[Billy Schoenberg]

Hello,
There is also a config file for GTK/GDK *gdk_pixbuf.loaders* which needs to
be set up properly.  I know that I have had many issues using GTK on my Win
XP and Vista boxes.

Billy

On Tue, Oct 21, 2008 at 8:45 AM, Stephane Delcroix <stephane at delcroix.org>wrote:

> Hi,
>
> Gdk contains some helpers to load pixbufs from resources:
> Pixbuf loaded_from_res = Gdk.Pixbuf.LoadFromResource
> ("resourcename.png");
>
> But that's unrelated to your problem. In your case, it looks like the
> gdk_pixbuf you're using on windows is not compiled with svg support.
>
> You can list the supported formats in gdk_pixbuf by a code like this:
>
> foreach (PixbufFormat format in Pixbuf.Formats)
>        Console.WriteLine (format.Name);
>
> regards
>
> s
>
> On Sun, 2008-10-19 at 06:04 -0700, thomas_wach wrote:
> > Hello,
> >
> > I am working with mono-2.0 an Linux (fc8) and Windows XP(SP3). I use
> > monodevelop 1.0. Everything compiled from source on my Linux box rund
> fine.
> > On my Windows box the provided setup mono-2.0-gtksharp-2.10.4-win32-5.exe
> > ist correctly installed and mods done to the mono-config file.
> >
> > I created some SVG-icons with inkscape (icon_64x64), saved them to the
> > project folder and imported them as resources with monodevelop.
> >
> > Here is the code that populates my combobox-store with the icons I need:
> >
> > System.Reflection.Assembly ass =
> > System.Reflection.Assembly.GetExecutingAssembly();
> > string[] resNames = ass.GetManifestResourceNames();
> > foreach (string resItemName in resNames) {
> >   try
> >   {
> >      if (resItemName.StartsWith("shape-") &&
> (resItemName.EndsWith(".svg")
> > || resItemName.EndsWith(".png"))) {
> >       System.IO.Stream s = ass.GetManifestResourceStream(resItemName);
> >       store.AppendValues ("   #" + resItemName.Substring(6,1) + "   ",
> new
> > Gdk.Pixbuf(s));
> >     }
> >   }
> >   catch (Exception e)
> >   {
> >     DebugMessage (e.ToString());
> >   }
> > }
> >
> > This works PERFECT on my Linux box.
> >
> > BUT on my Windows box I get the following error whem it tries to open a
> > .svg-file:
> >
> > GLib.GException: Format der Bilddatei unbekannt (format of picturefile
> > unknown)
> >   at Gdk.PixbufLoader.Close () [0x00000]
> >   at Gdk.PixbufLoader.InitFromStream (System.IO.Stream stream) [0x00000]
> >   at Gdk.PixbufLoader..ctor (System.IO.Stream stream) [0x00000]
> >   at Gdk.Pixbuf..ctor (System.IO.Stream stream) [0x00000]
> >   at GladeApp..ctor (System.String[] args) [0x00000]
> >
> > Creating the pixbuf from the .png-icons contained in the manifested
> resource
> > works on both boxes!
> > Only the SVG-files do not.
> >
> > The Windows box is PURE mono, so NO .NET 1.1 nor .Net 2.0 are installed
> > there.
> > So the gtksharp-sdk-2.10.3.exe is NOT installed, because it depends on
> .NET
> > 1.1.
> >
> > By the way, if I try to directly create a pixbuf with the FromFile-Method
> it
> > throws exceptions regarding a missing librsvg-2. But that IS NOT the
> case.
> > librsvg-2-2.dll and librsvg-2.dll (size 251kb) are correctly residing in
> > %MONOPATH%\bin !
> >
> > Of course I searched the net, but all hints I found did not solved the
> > problem.
> >  - prior call Gtk.Application.Init() -> no change
> >  - referencing Mono.Cairo in the project -> no change
> >  - found some articels talking about a librsvg2-common, but find no valid
> > dll for win32 to setup or copy
> >
> > Maybe the SVG-files themselves have some issues regardin DOCTYPE, DTD or
> > something else?
> > I do not think that the different line breaks in unix/windows are
> > responsible, do you?
> >
> > Here is the header of the a sample SVG-file that does not load on
> windows:
> > (the complete SVG-file is attached)
> > http://www.nabble.com/file/p20055917/shape-1.svg shape-1.svg
> >
> > <?xml version="1.0" encoding="UTF-8" standalone="no"?>
> > <!-- Created with Inkscape (http://www.inkscape.org/) -->
> > <svg
> >    xmlns:dc="http://purl.org/dc/elements/1.1/"
> >    xmlns:cc="http://creativecommons.org/ns#"
> >    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> >    xmlns:svg="http://www.w3.org/2000/svg"
> >    xmlns="http://www.w3.org/2000/svg"
> >    xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
> >    xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
> >    width="64px"
> >    height="64px"
> >    id="svg2383"
> >    sodipodi:version="0.32"
> >    inkscape:version="0.46"
> >    sodipodi:docname="shape-1.svg"
> >    inkscape:output_extension="org.inkscape.output.svg.inkscape">
> >
> >
> > I think I provided every information needed, but let me know, if I missed
> > some important.
> >
> > Anyone got the same problem and get rid of it?
> > Anyone knows about special SVG-issues that could lead to this behaviour?
> >
> > So far ...
> > Kind regards
> > Thomas
>
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