Java/Swing offscreen rendering (Cobra HTMLPanel -> BufferedImage) Problem: Component doesn't finish
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Published on 2010-05-06T18:11:57Z
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2010/05/06
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I'm trying to render the contents of a the Java/Swing Cobra HTML renderer to an offscreen BufferedImage, for use elsewhere in my app:
slideViewPanel.setDocument(document, rendererContext);
BufferedImage test = new BufferedImage(300,300,BufferedImage.TYPE_INT_RGB);
Graphics g = test.getGraphics();
slideViewPanel.paint(g);
The resulting image in g shows a partially rendered page -- sometimes the contents of the HTMLFrame before the new document was set; sometimes a half-rendered version of the new document. I gather this is because Cobra's setDocument method just schedules the document for re-rendering, but I'm stepping through in the debugger and I don't see a second thread to do re-rendering. Anyone have any insight into what might be happening here?
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