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Fix IllegalStateException when saving as GIF, see bug 683.

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This commit is contained in:
lehni 2009-11-16 13:47:46 +00:00
parent 807cd5c80d
commit 17047f9cfc
1 changed files with 20 additions and 7 deletions
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27
src/helma/image/imageio/ImageIOGenerator.java
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@ -22,17 +22,23 @@
package helma.image.imageio;
import java.awt.Image;
import java.awt.image.*;
import java.io.*;
import java.net.URL;
import helma.image.ImageGenerator;
import helma.image.ImageWrapper;
import java.awt.image.BufferedImage;
import java.awt.image.DirectColorModel;
import java.awt.image.WritableRaster;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Iterator;
import javax.imageio.*;
import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriteParam;
import javax.imageio.ImageWriter;
import javax.imageio.stream.ImageOutputStream;
import helma.image.*;
/**
* A wrapper for an image that uses the ImageIO Framework.
@ -46,6 +52,13 @@ public class ImageIOGenerator extends ImageGenerator {
if (param.canWriteCompressed() &&
quality >= 0.0 && quality <= 1.0) {
param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
String[] types = param.getCompressionTypes();
// If compression types are defined, but none is set, set the first one,
// since setCompressionQuality, which requires MODE_EXPLICIT to be set,
// will complain otherwise.
if (types != null && param.getCompressionType() == null) {
param.setCompressionType(types[0]);
}
param.setCompressionQuality(quality);
}
if (param.canWriteProgressive())