/* PNGEncoder.java
Purpose:
Description:
History:
Tue Jun 24 16:16:24 2008, Created by tomyeh
Copyright (C) 2008 Potix Corporation. All Rights Reserved.
{{IS_RIGHT
This program is distributed under LGPL Version 2.1 in the hope that
it will be useful, but WITHOUT ANY WARRANTY.
}}IS_RIGHT
*/
package org.zkoss.image.encoder;
import java.io.ByteArrayOutputStream;
import java.awt.image.RenderedImage;
import javax.imageio.ImageIO;
/**
* The encoder for encoding an image into the PNG format
*
* @author tomyeh
* @since 3.0.7
*/
public class PNGEncoder implements ImageEncoder {
public PNGEncoder() {
}
public byte[] encode(RenderedImage image) throws java.io.IOException {
ByteArrayOutputStream os = new ByteArrayOutputStream();
ImageIO.write(image, "png", os);
return os.toByteArray();
}
/** Always return 1.0 since no quality degrade.
*/
public float getQuality() {
return 1.0f;
}
public void setQuality(float quality) {
}
public boolean isEncodingAlpha() {
return false;
}
public void setEncodingAlpha(boolean encodeAlpha) {
}
}