/**
* Retrieves a Batik {@link GraphicsNode} for a given SVG.
*
* @param svgLocation an URL that specifies the SVG.
* @return the corresponding GraphicsNode.
* @throws IOException
* @throws URISyntaxException
*/
private GraphicsNode getGraphicNode(Document doc) {
// instantiates objects needed for building the node
UserAgent userAgent = new UserAgentAdapter();
DocumentLoader loader = new DocumentLoader(userAgent);
BridgeContext ctx = new BridgeContext(userAgent, loader);
ctx.setDynamic(true);
// creates node builder and builds node
GVTBuilder builder = new GVTBuilder();
return builder.build(ctx, doc);
}
protected GraphicsNode buildGVT(BridgeContext ctx, SVGOMDocument svgDoc)
throws TranscoderException {
GVTBuilder builder = new GVTBuilder();
GraphicsNode gvtRoot;
try {
gvtRoot = builder.build(ctx, svgDoc);
// dispatch an 'onload' event if needed
if (ctx.isDynamic()) {
BaseScriptingEnvironment se = new BaseScriptingEnvironment(ctx);
se.loadScripts();
se.dispatchSVGLoadEvent();
}
} catch (BridgeException ex) {
throw new TranscoderException(ex);
}
return gvtRoot;
}
/**
* Builds using the specified BridgeContext and element, the specified graphics node.
*
* @param ctx the bridge context to use
* @param e the element that describes the graphics node to build
* @param node the graphics node to build
*/
public void buildGraphicsNode(BridgeContext ctx, Element e, GraphicsNode node) {
CompositeGraphicsNode cgn = (CompositeGraphicsNode) node;
// build flowRegion shapes
boolean isStatic = !ctx.isDynamic();
if (isStatic) {
flowRegionNodes = new HashMap();
} else {
regionChangeListener = new RegionChangeListener();
}
CompositeGraphicsNode cgn2 = (CompositeGraphicsNode) cgn.get(0);
GVTBuilder builder = ctx.getGVTBuilder();
for (Node n = getFirstChild(e); n != null; n = getNextSibling(n)) {
if (n instanceof SVGOMFlowRegionElement) {
for (Node m = getFirstChild(n); m != null; m = getNextSibling(m)) {
if (m.getNodeType() != Node.ELEMENT_NODE) {
continue;
}
GraphicsNode gn = builder.build(ctx, (Element) m);
if (gn != null) {
cgn2.add(gn);
if (isStatic) {
flowRegionNodes.put(m, gn);
}
}
}
if (!isStatic) {
AbstractNode an = (AbstractNode) n;
XBLEventSupport es = (XBLEventSupport) an.initializeEventSupport();
es.addImplementationEventListenerNS(
SVG_NAMESPACE_URI, "shapechange", regionChangeListener, false);
}
}
}
// build text node
GraphicsNode tn = (GraphicsNode) cgn.get(1);
super.buildGraphicsNode(ctx, e, tn);
// Drop references once static build is completed.
flowRegionNodes = null;
}
private static void drawSvgToGraphics2D(Svg svg, Graphics2D g2, Dimension size)
throws IOException {
// Copied (and modified) from http://stackoverflow.com/a/12502943
String parser = XMLResourceDescriptor.getXMLParserClassName();
SAXSVGDocumentFactory factory = new SAXSVGDocumentFactory(parser);
UserAgent userAgent = new UserAgentAdapter();
DocumentLoader loader = new DocumentLoader(userAgent);
BridgeContext ctx = new BridgeContext(userAgent, loader);
ctx.setDynamicState(BridgeContext.DYNAMIC);
GVTBuilder builder = new GVTBuilder();
StringReader svgReader = new StringReader(svg.toString());
SVGDocument parsedSvgDocument = factory.createSVGDocument(null, svgReader);
GraphicsNode chartGfx = builder.build(ctx, parsedSvgDocument);
Dimension actualSize = svg.getSize();
double scaleWidth = 1.0 * size.width / actualSize.width;
double scaleHeight = 1.0 * size.height / actualSize.height;
chartGfx.setTransform(AffineTransform.getScaleInstance(scaleWidth, scaleHeight));
chartGfx.paint(g2);
}
public static void main(String[] args) {
try {
FileInputStream f = new FileInputStream(args[0]);
SVGDocument doc = (SVGDocument) svgDocFactory.createDocument(null, f);
BridgeContext bc = new BridgeContext(new UserAgentAdapter());
GVTBuilder gvtb = new GVTBuilder();
GraphicsNode gn = gvtb.build(bc, doc);
GVTTreeWalker tw = new GVTTreeWalker(gn);
gn = tw.nextGraphicsNode();
System.out.print("new Color[] { ");
Graphics2D g2 =
GraphicsEnvironment.getLocalGraphicsEnvironment()
.createGraphics(new BufferedImage(32, 32, BufferedImage.TYPE_3BYTE_BGR));
while (true) {
// System.out.println("node " + i);
gn = tw.nextGraphicsNode();
if (gn == null) {
break;
}
gn.paint(g2);
Color c = g2.getColor();
System.out.print(
"new Color(" + c.getRed() + ", " + c.getGreen() + ", " + c.getBlue() + "), ");
}
System.out.println("}");
} catch (IOException e) {
e.printStackTrace();
}
}
public Document(InputStream stream) throws IOException {
f = new SAXSVGDocumentFactory(XMLResourceDescriptor.getXMLParserClassName());
doc = f.createSVGDocument(null, stream);
// Boot the CSS engine
userAgent = new UserAgentAdapter();
loader = new DocumentLoader(userAgent);
ctx = new BridgeContext(userAgent, loader);
ctx.setDynamicState(BridgeContext.DYNAMIC);
builder = new GVTBuilder();
rootGN = builder.build(ctx, doc);
svgRoot = doc.getRootElement();
vcss = (ViewCSS) doc.getDocumentElement();
}
