views:

1183

answers:

2

Is there a way to script the rescaling of a .SVG from its current size (thousands of pixels) to a much smaller size? I've tried ImageMagick, but its support for SVG gradients is far too weak to be useful.

The purpose is to work around a bug in a rendering library that sometimes causes svgs with large pixel sizes to allocate large rasters (before ultimately being rescaled smoothly down for actual display).

For example, how can I change this 1024x1024px 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:xlink="http://www.w3.org/1999/xlink"
   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
   width="1024.09"
   height="1024.36"
   id="svg2"
   sodipodi:version="0.32"
   inkscape:version="0.46"
   version="1.0"
   sodipodi:docname="tst.svg"
   inkscape:output_extension="org.inkscape.output.svg.inkscape">
  <defs
     id="defs4">
    <linearGradient
       inkscape:collect="always"
       id="linearGradient2454">
      <stop
         style="stop-color:#800000;stop-opacity:1;"
         offset="0"
         id="stop2456" />
      <stop
         style="stop-color:#800000;stop-opacity:0;"
         offset="1"
         id="stop2458" />
    </linearGradient>
    <inkscape:perspective
       sodipodi:type="inkscape:persp3d"
       inkscape:vp_x="99.717407 : 889.90313 : 1"
       inkscape:vp_y="7.5659029e-15 : 92.21017 : 0"
       inkscape:vp_z="191.66118 : 889.90313 : 1"
       inkscape:persp3d-origin="145.68929 : 873.73005 : 1"
       id="perspective10" />
    <radialGradient
       inkscape:collect="always"
       xlink:href="#linearGradient2454"
       id="radialGradient2460"
       cx="4022.8572"
       cy="5451.2656"
       fx="4022.8572"
       fy="5451.2656"
       r="3559.865"
       gradientTransform="matrix(-0.1071067,-0.1166362,0.1377765,-7.0459663e-2,276.61943,1452.439)"
       gradientUnits="userSpaceOnUse" />
  </defs>
  <sodipodi:namedview
     id="base"
     pagecolor="#ffffff"
     bordercolor="#666666"
     borderopacity="1.0"
     gridtolerance="10000"
     guidetolerance="10"
     objecttolerance="10"
     inkscape:pageopacity="0.0"
     inkscape:pageshadow="2"
     inkscape:zoom="0.49497475"
     inkscape:cx="403.89421"
     inkscape:cy="477.41913"
     inkscape:document-units="px"
     inkscape:current-layer="layer1"
     showgrid="false"
     inkscape:window-width="1680"
     inkscape:window-height="978"
     inkscape:window-x="1307"
     inkscape:window-y="24" />
  <metadata
     id="metadata7">
    <rdf:RDF>
      <cc:Work
         rdf:about="">
        <dc:format>image/svg+xml</dc:format>
        <dc:type
           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
      </cc:Work>
    </rdf:RDF>
  </metadata>
  <g
     inkscape:label="Layer 1"
     inkscape:groupmode="layer"
     id="layer1">
    <rect
       style="fill:#0000ff;fill-rule:evenodd;stroke:#000000;stroke-width:0.10674229px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       id="rect2403"
       width="836.00311"
       height="815.66479"
       x="144.90677"
       y="154.41733" />
    <path
       style="fill:url(#radialGradient2460);fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.10674229px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="M 492.29996,1003.8047 C 992.20722,1001.6971 989.38289,999.5894 992.20722,997.48173 C 995.03156,995.37408 992.20722,124.91007 992.20722,124.91007 L 113.83908,124.91007 L 122.31209,1012.2353 L 492.29996,1003.8047 z"
       id="path2382" />
    <g
       sodipodi:type="inkscape:box3d"
       style="fill:#800000;fill-opacity:1"
       id="g2392"
       inkscape:perspectiveID="#perspective10"
       inkscape:corner0="-0.94081067 : 0.17266027 : 0 : 1"
       inkscape:corner7="-0.94348241 : 0.15857352 : 0.25 : 1">
      <path
         sodipodi:type="inkscape:box3dside"
         id="path2402"
         style="fill:#afafde;fill-rule:evenodd;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:round;stroke-opacity:1"
         inkscape:box3dsidetype="13"
         d="M 876.40947,160.66071 L 913.12582,161.89944 L 324.68925,139.51689 L 322.74524,139.47316 L 876.40947,160.66071 z" />
      <path
         sodipodi:type="inkscape:box3dside"
         id="path2400"
         style="fill:#d7d7ff;fill-rule:evenodd;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:round;stroke-opacity:1"
         inkscape:box3dsidetype="14"
         d="M 913.12582,138.91648 L 913.12582,161.89944 L 324.68925,139.51689 L 324.68925,135.27915 L 913.12582,138.91648 z" />
      <path
         sodipodi:type="inkscape:box3dside"
         id="path2404"
         style="fill:#e9e9ff;fill-rule:evenodd;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:round;stroke-opacity:1"
         inkscape:box3dsidetype="11"
         d="M 322.74524,135.27204 L 324.68925,135.27915 L 324.68925,139.51689 L 322.74524,139.47316 L 322.74524,135.27204 z" />
      <path
         sodipodi:type="inkscape:box3dside"
         id="path2396"
         style="fill:#4d4d9f;fill-rule:evenodd;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:round;stroke-opacity:1"
         inkscape:box3dsidetype="5"
         d="M 876.40947,138.71518 L 913.12582,138.91648 L 324.68925,135.27915 L 322.74524,135.27204 L 876.40947,138.71518 z" />
      <path
         sodipodi:type="inkscape:box3dside"
         id="path2394"
         style="fill:#353564;fill-rule:evenodd;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:round;stroke-opacity:1"
         inkscape:box3dsidetype="6"
         d="M 876.40947,138.71518 L 876.40947,160.66071 L 322.74524,139.47316 L 322.74524,135.27204 L 876.40947,138.71518 z" />
      <path
         sodipodi:type="inkscape:box3dside"
         id="path2398"
         style="fill:#8686bf;fill-rule:evenodd;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:round;stroke-opacity:1"
         inkscape:box3dsidetype="3"
         d="M 876.40947,138.71518 L 913.12582,138.91648 L 913.12582,161.89944 L 876.40947,160.66071 L 876.40947,138.71518 z" />
    </g>
    <rect
       style="fill:#800000;fill-opacity:1"
       id="rect2448"
       width="36.716354"
       height="14.753627"
       x="432.98892"
       y="103.83346" />
    <rect
       style="fill:#800000;fill-opacity:1"
       id="rect2450"
       width="22.594679"
       height="16.861288"
       x="133.60942"
       y="101.7258" />
    <rect
       style="fill:#800000;fill-opacity:1"
       id="rect2452"
       width="22.594679"
       height="6.3229828"
       x="949.84222"
       y="97.510475" />
  </g>
</svg>

To a 102.4x102.4 SVG? It'd be nice if it didn't drop pieces of the SVG as well (which kind of rules out libsvgbin2, though it comes close).

+1  A: 

I would use the Apache Batik Toolkit to write a little Java App which runs through your SVG Document Tree and transforms all the elements.

räph
+2  A: 

You could replace

<g

with

<g transform="scale(0.5)"

Which should scale everything by 50%.

Scott Kirkwood