Batik load SVG file in SVGGraphics2D

Question

I use batik for drawing svg, and save it. That work.

But now i try to load my svg file and add somthing.

I use this fonction for load my svg file

private static SVGDocument loadSVGDocument(String uri) {
    String parser = XMLResourceDescriptor.getXMLParserClassName();
    SAXSVGDocumentFactory factory = new SAXSVGDocumentFactory(parser);
    SVGDocument svgDocument = null;
    try {
        //svgDocument = factory.createSVGDocument(IMAGE_SVG);
        svgDocument = factory.createSVGDocument(uri);
    } catch (IOException e) {
        System.out.println(e.getMessage());
    }
    return svgDocument;
}

and this for have SVGGraphics2D

SVGDocument svgDocument = loadSVGDocument(TEST_SVG);
SVGGraphics2D g = new SVGGraphics2D(svgDocument);

When i debug my SVGDocument have all children and attribut null And when i generate image, is empty and size is 400x400

Where is problem when i load my SVG file?

Only a small hint: When you create an `SVGGraphics2D` with a document, then the document is the **target** for the painting operations. E.g. when you do something like `g.fillRect(10,10,20,30)`, then the document will contain a rectangle. But if the document already contains something, it will (probably) be overwritten. I don't know from the tip of my head how to use the `SVGGraphics` to **add** something to an **existing** document. It should be possible, but I would have to try it out. — Marco13, Jul 21 '18 at 11:17
Thx for your reply. For this time i juste try to load on SVGGraphics2D and save it at jpg. But my jpg is empty. If i save in svg, is empty to. — zulot, Jul 21 '18 at 13:10
You should try to clarify: 1. Do you want to load an SVG and save it as JPG? or 2. Do you want to load an SVG, add some custom elements (by painting into the `SVGGraphics`) and save the result as SVG? — Marco13, Jul 21 '18 at 15:02
point 2. During my last test i see XMLResourceDescriptor.getXMLParserClassName(); return null; It's normal ? — zulot, Jul 21 '18 at 16:05
Sorry, I'm not deeply familiar with batik (only used it once for https://github.com/javagl/SvgGraphics ). The main purpose of my comment was to clarify the question. — Marco13, Jul 22 '18 at 12:48

score 0 · Accepted Answer · answered Jul 23 '18 at 08:00

I every body I find a solution for my case

I compare my generation and my file. First think i have svg root and one child g only. svg root don t have with and height

I go search width and height

        Element elSVG = svgDocument.getRootElement();
    String width = elSVG.getAttribute("width");
    String height = elSVG.getAttribute("height");

and after root

NodeList nodes = elSVG.getElementsByTagName("g");
    Node node = nodes.item(0);
    Element el = null;
    if(Node.ELEMENT_NODE == node.getNodeType()) {
        el = (Element)node;
    }

and for the end add everything to graphics

        SVGGraphics2D g = new SVGGraphics2D(svgDocument);
    g.setTopLevelGroup(el);
    g.setSVGCanvasSize(new Dimension(Integer.parseInt(width), Integer.parseInt(height)));

And that works for only one child to svg. For me is OK for now.

And i try to add an other think like rectangle and that work to.

Batik load SVG file in SVGGraphics2D

1 Answers1