Java Code Examples for org.apache.batik.bridge.BridgeContext#setDynamicState()

/**
 * Transcodes the SVG image into Java2D code. Does nothing if the
 * {@link #listener} is <code>null</code>.
 *
 * @param templateStream Stream with the template content
 */
public Document transcode(InputStream templateStream) {
    if (this.listener == null)
        return null;

    UserAgentAdapter ua = new UserAgentAdapter();
    DocumentLoader loader = new DocumentLoader(ua);

    BridgeContext batikBridgeContext = new BridgeContext(ua, loader);
    batikBridgeContext.setDynamicState(BridgeContext.DYNAMIC);
    ua.setBridgeContext(batikBridgeContext);

    GVTBuilder builder = new GVTBuilder();
    Document svgDoc;
    try {
        svgDoc = loader.loadDocument(this.uri);
        GraphicsNode gvtRoot = builder.build(batikBridgeContext, svgDoc);

        this.transcode(gvtRoot, templateStream);
        return svgDoc;
    } catch (IOException ex) {
        Logger.getLogger(SvgTranscoder.class.getName()).log(Level.SEVERE, null, ex);
        return null;
    } finally {
        try {
            loader.dispose();
            batikBridgeContext.dispose();
        } catch (Throwable t) {
            Logger.getLogger(SvgTranscoder.class.getName()).log(Level.SEVERE, null, t);
        }
    }
}
 

/**
 * Load the SVG image with the specified name. This operation may either
 * create a new graphics node of returned a previously created one.
 * @param name Name of the SVG file to load.
 * @return GraphicsNode containing SVG image or null if none found.
 */
public static GraphicsNode getSVGImage(String name) {
	if (svgCache == null) svgCache = new HashMap<String, GraphicsNode>();

	GraphicsNode found = svgCache.get(name);
	if (found == null) {
		String fileName = SVG_DIR + name;
		URL resource = SVGLoader.class.getResource(fileName);

		try {
			String xmlParser = XMLResourceDescriptor.getXMLParserClassName();
			SAXSVGDocumentFactory df = new SAXSVGDocumentFactory(xmlParser);
			SVGDocument doc = df.createSVGDocument(resource.toString());
			UserAgent userAgent = new UserAgentAdapter();
			DocumentLoader loader = new DocumentLoader(userAgent);
			BridgeContext ctx = new BridgeContext(userAgent, loader);
			ctx.setDynamicState(BridgeContext.DYNAMIC);
			GVTBuilder builder = new GVTBuilder();
			found = builder.build(ctx, doc);

			svgCache.put(name, found);
		}
		catch (Exception e) {
			System.err.println("getSVGImage error: " + fileName);
			e.printStackTrace(System.err);
		}
	}

	return found;
}
 

private GraphicsNode getGraphicsNode(SVGDocument svgDocument, int dpi) throws IOException {
    UserAgent userAgent = new DensityAwareUserAgent(dpi);
    DocumentLoader loader = new DocumentLoader(userAgent);
    BridgeContext ctx = new BridgeContext(userAgent, loader);
    ctx.setDynamicState(BridgeContext.DYNAMIC);
    GVTBuilder builder = new GVTBuilder();
    GraphicsNode rootGN = builder.build(ctx, svgDocument);
    return rootGN;
}
 

/**
 * Load the original SVG resource.
 *
 * @param toSize if not null, will be set to the image's size
 */
private static GraphicsNode loadGraphicsNode(URL url, Dimension toSize)
        throws IOException
{
    Parameters.notNull("url", url);
    final GraphicsNode graphicsNode;
    final Dimension2D documentSize;
    final Document doc;
    InputStream is = url.openStream();
    try {
        // See http://batik.2283329.n4.nabble.com/rendering-directly-to-java-awt-Graphics2D-td3716202.html
        SAXSVGDocumentFactory factory = DOCUMENT_FACTORY.get();
        /* Don't provide an URI here; we shouldn't commit to supporting relative links from
        loaded SVG documents. */
        doc = factory.createDocument(null, is);
        UserAgent userAgent = new UserAgentAdapter();
        DocumentLoader loader = new DocumentLoader(userAgent);
        BridgeContext bctx = new BridgeContext(userAgent, loader);
        try {
            bctx.setDynamicState(BridgeContext.STATIC);
            graphicsNode = new GVTBuilder().build(bctx, doc);
            documentSize = bctx.getDocumentSize();
        } finally {
            bctx.dispose();
        }
    } catch (RuntimeException e) {
        /* Rethrow the many different exceptions that can occur when parsing invalid SVG files;
        DOMException, BridgeException etc. */
        throw new IOException("Error parsing SVG file", e);
    } finally {
        is.close();
    }
    if (toSize != null) {
        int width = (int) Math.ceil(documentSize.getWidth());
        int height = (int) Math.ceil(documentSize.getHeight());
        final int widthLimited = Math.min(MAX_DIMENSION_PIXELS, width);
        final int heightLimited = Math.min(MAX_DIMENSION_PIXELS, height);
        if (width != widthLimited || height != heightLimited) {
            LOG.log(Level.WARNING,
                    "SVG image {0} too large (dimensions were {1}x{2}, each side can be at most {3}px)",
                    new Object[]{url, width, height, MAX_DIMENSION_PIXELS});
        } else if (width <= 1 && height <= 1) {
            LOG.log(Level.WARNING,
                    "SVG image {0} did not specify a width/height, or is incorrectly sized", url);
        }
        toSize.width = widthLimited;
        toSize.height = heightLimited;
    }
    return graphicsNode;
}