Hello! We are a team 3 students who are developing an opensource application called Chart Glazer. The application helps the users draw charts (process diagrams, organization charts etc.) easily. It is very much similar to Microsoft Office 2007's SmartArt. We're using Apache Batik and Java Swing for our development. Our project is hosted at http://kenai.com/projects/chartglazer. The FAQ at http://xmlgraphics.apache.org/batik/faq.html talks about using the UpdateManager. We are facing the exact same problem, as in section 3.3 of the FAQ, "When I change the document in Java it only updates if I move the mouse over the canvas?" We have reproduced our problem into a smaller application (called SVGApplication), using NetBeans. It has a JButton (called loadDocumentJButton) and a JSVGCanvas (called myJSVGCanvas) present inside a JScrollPane object. Our requirement is that when we click this "loadDocumentJButton" button, the the "myJSVGCanvas" object must display the "myRectangle" (see code below.) Here is the "actionPerformed" event handler for "loadDocumentJButton"... private void loadDocumentJButtonActionPerformed(java.awt.event.ActionEvent evt) { DOMImplementation myDOMImplementation = SVGDOMImplementation.getDOMImplementation(); Document myDocument = myDOMImplementation.createDocument(SVGDOMImplementation.SVG_NAMESPACE_URI, "svg", null); Element svgRoot = myDocument.getDocumentElement();
SVGGraphics2D mySVGGraphics2D = new SVGGraphics2D(myDocument); mySVGGraphics2D.setSVGCanvasSize(new Dimension(320, 240)); myJSVGCanvas.setDocumentState(JSVGCanvas.ALWAYS_DYNAMIC); myJSVGCanvas.setDocument(myDocument); Rectangle myRectangle = new Rectangle(10, 10, 60, 40); mySVGGraphics2D.draw(myRectangle); svgRoot.appendChild(mySVGGraphics2D.getRoot()); } The rectangle is being displayed only when we move the mouse over the "myJSVGCanvas" object in the Swing GUI window. We understand that we must use UpdateManager to solve this problem. But we don't know how to use it. We searched a lot on the Internet and mail-archives, but we are not able to figure things out. We did not find any example programs. If we get an example program that demonstrates the use of UpdateManager, we will figure it out on our own. It would be great if you provide us with such an example program. Please help us. We are attaching the 3 files of "SVGApplication" (created usingNetBeans) for your reference. The above event handler function is located in the SVGView.java. Probably, the other two files will not be required; we have just attached it for completeness' sake. Thank you very much! Regards, Rishabh Rao, Narendra G S and Praveen K S
SVGApplication.java
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SVGView.java
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SVGAboutBox.java
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