Hello all, I have been using Batik 1.1.1 via Cocoon extensively for some while, and I am considering Batik to be a really valuable component. After switching to Java 1.4.0, the library refused to produce the correct images as JPEGs via the JPEGTranscoder. The bug shows whenever there is a KEY_BACKGROUND_COLOR hint set and the JPEGTranscoder is used under Java 1.4.0, the result is a plain image with the specificed background color. I already filed it as a bug at http://nagoya.apache.org/bugzilla/show_bug.cgi?id=6775
The problem traces back to a seemingly now enforced semantic of Graphics and subsequently Graphics2D in Java 1.4.0; according to http://java.sun.com/j2se/1.4/docs/api/java/awt/Graphics.html#dispose(), after disposing a Graphics object, > Disposes of this graphics context and releases any system resources > that it is using. A |Graphics| object cannot be used after |dispose| > has been called. In org.apache.batik.transcoder.image.ImageTranscoder.transcode(), find the following section BufferedImage dest = createImage(w, h); Graphics2D g2d = GraphicsUtil.createGraphics(dest); if (hints.containsKey(KEY_BACKGROUND_COLOR)) { Paint bgcolor = (Paint)hints.get(KEY_BACKGROUND_COLOR); g2d.setComposite(AlphaComposite.SrcOver); g2d.setPaint(bgcolor); g2d.fillRect(0, 0, w, h); g2d.dispose(); } if (rend != null) { // might be null if the svg document is empty g2d.drawRenderedImage(rend, new AffineTransform()); } rend = null; // We're done with it... writeImage(dest, output); and have a look at the g2d.dispose() call and the following call to g2d.drawRenderedImage(rend, new AffineTransform()); a move of the g2d.dispose() call after the next if-block, looking like this BufferedImage dest = createImage(w, h); Graphics2D g2d = GraphicsUtil.createGraphics(dest); if (hints.containsKey(KEY_BACKGROUND_COLOR)) { Paint bgcolor = (Paint)hints.get(KEY_BACKGROUND_COLOR); g2d.setComposite(AlphaComposite.SrcOver); g2d.setPaint(bgcolor); g2d.fillRect(0, 0, w, h); } if (rend != null) { // might be null if the svg document is empty g2d.drawRenderedImage(rend, new AffineTransform()); } g2d.dispose(); rend = null; // We're done with it... writeImage(dest, output); does the trick; I am now able to use Batik 1.1.1 in Cocoon 2.0.2-dev with Tomcat 4.0.1 and Suns JDK 1.4.0 to turn SVG into JPEG images again. Best regards, Michael Hartle, Hartle & Klug GbR --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
