Difference between revisions of "SVG"

Scalable Vector Graphics (SVG) SVG is a language for describing two-dimensional graphics and graphical applications in XML. It supports placing metadata for the whole document and per object.

Developer Challenges

Develop software that embeds license and metadata into SVG files (XML-based). SVG (Scalable Vector Graphics) includes support for RDF/XML metadata. We need examples of including license metadata in SVG for the purposes of denoting that a file itself is published under a Creative Commons license or that individual components of the file are licensed. Even better if you can use dc:source to specify parent works. SVG has similar support for RDF/XML metadata. Read more about the motivation in this cc-metadata post.

Implementations

• Inkscape, an open source drawing tool
• Open Clip Art Library, a public domain collection of user-submitted clip art
• SVG::Metadata by Bryce Harrington is a PERL module for including metadata inside an SVG (used by Open Clip Art Library.
• Please add yours here :)

Examples

Code

• Here is the code that is in Inkscape's SVN repository for making the License and Metadata Dialogs possible. Please use them as examples for coding your own metadata and license selectors for use in SVG:
  • document-metadata.cpp
  • document-metadata.h
  • rdf.cpp
  • rdf.h
• Here is the discussion page at the Open Clip Art Library wiki about SVG Metadata.

Sample

This is how to include metadata inside of an SVG file using CC metadata, licensing and dublin core.

<svg>
<metadata>
   <rdf:RDF
      xmlns="http://web.resource.org/cc/"
      xmlns:dc="http://purl.org/dc/elements/1.1/"
      xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
   >
      <Work rdf:about="http://www.openclipart.org/incoming/2004/04/contents/barcode_ean13.svg">
         <dc:title>EAN-13 Bar Code</dc:title>
         <dc:description>A Bar Code: EAN-13.</dc:description>
         <dc:subject>barcode, bar code, bar, code, UPC, EAN, EAN-13, universal product code, universal, product, code, product code</dc:subject>
         <dc:publisher><Agent rdf:about="http://www.openclipart.org/"><dc:title>Open Clip Art Project</dc:title></Agent></dc:publisher>
         <dc:creator><Agent rdf:about="http://www.theworths.org/richard/"><dc:title>Richard D. Worth</dc:title></Agent></dc:creator>
         <dc:rights><Agent rdf:about="http://web.resource.org/cc/PublicDomain"><dc:title>Public Domain</dc:title></Agent></dc:rights>
         <dc:date>2004-04-27</dc:date>
         <dc:format>image/svg+xml</dc:format>
         <dc:type>http://purl.org/dc/dcmitype/StillImage</dc:type>
         <license rdf:resource="http://web.resource.org/cc/PublicDomain" />
      </Work>
      <License rdf:about="http://web.resource.org/cc/PublicDomain">
         <permits rdf:resource="http://web.resource.org/cc/Reproduction" />
         <permits rdf:resource="http://web.resource.org/cc/Distribution" />
         <permits rdf:resource="http://web.resource.org/cc/DerivativeWorks" />
      </License>
   </rdf:RDF>
</metadata>
<!-- The rest of the image goes here -->
</svg>