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1

I want use the librsvg to render part of some svg files.
When I use those code:

 try 
 handle = new Rsvg.Handle.from_file(inputtext);
 catch (GLib.Error e) error ("%s", e.message);

 if(handle.has_sub("##sub0") && handle.has_sub("##sub1"))
 sub=0; stdout.printf("found sub0 and sub1.n");

nothing happend. of course id="sub0" and id="sub1" is in the svg file, and handle also work (can render whole svg correctlly).

id (str or None) – An element's id within the SVG, or None to render the whole SVG. For example, if you have a layer called “layer1” that you wish to render, pass “##layer1” as the id.

according to https://lazka.github.io/pgi-docs/Rsvg-2.0/classes/Handle.html, search the id in svg need to prefix with "##".

If i use handle.has_sub("sub0"), the code still no work.

gtk3 vala librsvg

share|improve this question

edited Mar 24 at 7:47

utopic eexpress

asked Mar 23 at 10:40

utopic eexpressutopic eexpress

307

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Why is this tagged C# & Vala? Looks like your using Vala so you should probably remove c#
  
  – AlexB
  Mar 23 at 12:23
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Also I suggest using vala or the original c docs (which seem to suggest just one #)
  
  – AlexB
  Mar 23 at 12:24
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  An id is referenced with a single # when using a URI, so it makes sense to try a single #. The C docs, as AlexB points out, state ' starting with "##", for example, "#layer1"' which could be confusing
  
  – AlThomas
  Mar 23 at 23:57
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks very much, AlThomas and AlexB. when use "#sub0", it works.
  
  – utopic eexpress
  Mar 26 at 11:08
  

  
  
  
  

add a comment | 

1

I want use the librsvg to render part of some svg files.
When I use those code:

 try 
 handle = new Rsvg.Handle.from_file(inputtext);
 catch (GLib.Error e) error ("%s", e.message);

 if(handle.has_sub("##sub0") && handle.has_sub("##sub1"))
 sub=0; stdout.printf("found sub0 and sub1.n");

nothing happend. of course id="sub0" and id="sub1" is in the svg file, and handle also work (can render whole svg correctlly).

id (str or None) – An element's id within the SVG, or None to render the whole SVG. For example, if you have a layer called “layer1” that you wish to render, pass “##layer1” as the id.

according to https://lazka.github.io/pgi-docs/Rsvg-2.0/classes/Handle.html, search the id in svg need to prefix with "##".

If i use handle.has_sub("sub0"), the code still no work.

gtk3 vala librsvg

share|improve this question

edited Mar 24 at 7:47

utopic eexpress

asked Mar 23 at 10:40

utopic eexpressutopic eexpress

307

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Why is this tagged C# & Vala? Looks like your using Vala so you should probably remove c#
  
  – AlexB
  Mar 23 at 12:23
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Also I suggest using vala or the original c docs (which seem to suggest just one #)
  
  – AlexB
  Mar 23 at 12:24
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  An id is referenced with a single # when using a URI, so it makes sense to try a single #. The C docs, as AlexB points out, state ' starting with "##", for example, "#layer1"' which could be confusing
  
  – AlThomas
  Mar 23 at 23:57
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks very much, AlThomas and AlexB. when use "#sub0", it works.
  
  – utopic eexpress
  Mar 26 at 11:08
  

  
  
  
  

add a comment | 

I want use the librsvg to render part of some svg files.
When I use those code:

 try 
 handle = new Rsvg.Handle.from_file(inputtext);
 catch (GLib.Error e) error ("%s", e.message);

 if(handle.has_sub("##sub0") && handle.has_sub("##sub1"))
 sub=0; stdout.printf("found sub0 and sub1.n");

nothing happend. of course id="sub0" and id="sub1" is in the svg file, and handle also work (can render whole svg correctlly).

id (str or None) – An element's id within the SVG, or None to render the whole SVG. For example, if you have a layer called “layer1” that you wish to render, pass “##layer1” as the id.

according to https://lazka.github.io/pgi-docs/Rsvg-2.0/classes/Handle.html, search the id in svg need to prefix with "##".

If i use handle.has_sub("sub0"), the code still no work.

gtk3 vala librsvg

share|improve this question

edited Mar 24 at 7:47

utopic eexpress

asked Mar 23 at 10:40

utopic eexpressutopic eexpress

307

 try 
 handle = new Rsvg.Handle.from_file(inputtext);
 catch (GLib.Error e) error ("%s", e.message);

 if(handle.has_sub("##sub0") && handle.has_sub("##sub1"))
 sub=0; stdout.printf("found sub0 and sub1.n");

share|improve this question

edited Mar 24 at 7:47

utopic eexpress

asked Mar 23 at 10:40

utopic eexpressutopic eexpress

307

share|improve this question

edited Mar 24 at 7:47

utopic eexpress

asked Mar 23 at 10:40

utopic eexpressutopic eexpress

307

asked Mar 23 at 10:40

utopic eexpressutopic eexpress

307

asked Mar 23 at 10:40

utopic eexpressutopic eexpress

307