org.apache.fop.render.ps.PSImageHandlerRenderedImage Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id: PSImageHandlerRenderedImage.java 1584420 2014-04-03 21:57:51Z lbernardo $ */
package org.apache.fop.render.ps;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.RenderedImage;
import java.io.IOException;
import org.apache.xmlgraphics.image.loader.Image;
import org.apache.xmlgraphics.image.loader.ImageFlavor;
import org.apache.xmlgraphics.image.loader.ImageInfo;
import org.apache.xmlgraphics.image.loader.impl.ImageRendered;
import org.apache.xmlgraphics.ps.FormGenerator;
import org.apache.xmlgraphics.ps.ImageEncoder;
import org.apache.xmlgraphics.ps.ImageEncodingHelper;
import org.apache.xmlgraphics.ps.ImageFormGenerator;
import org.apache.xmlgraphics.ps.PSGenerator;
import org.apache.xmlgraphics.ps.PSImageUtils;
import org.apache.fop.render.RenderingContext;
/**
* Image handler implementation which handles RenderedImage instances for PostScript output.
*/
public class PSImageHandlerRenderedImage implements PSImageHandler {
private static final ImageFlavor[] FLAVORS = new ImageFlavor[] {
ImageFlavor.BUFFERED_IMAGE,
ImageFlavor.RENDERED_IMAGE
};
/** {@inheritDoc} */
public void handleImage(RenderingContext context, Image image, Rectangle pos)
throws IOException {
PSRenderingContext psContext = (PSRenderingContext) context;
PSGenerator gen = psContext.getGenerator();
ImageRendered imageRend = (ImageRendered) image;
float x = (float) pos.getX() / 1000f;
float y = (float) pos.getY() / 1000f;
float w = (float) pos.getWidth() / 1000f;
float h = (float) pos.getHeight() / 1000f;
Rectangle2D targetRect = new Rectangle2D.Double(x, y, w, h);
RenderedImage ri = imageRend.getRenderedImage();
if (ri instanceof BufferedImage && ri.getColorModel().hasAlpha()) {
BufferedImage convertedImg = new BufferedImage(ri.getWidth(), ri.getHeight(), BufferedImage.TYPE_INT_RGB);
Graphics2D g = (Graphics2D) convertedImg.getGraphics();
g.setBackground(Color.WHITE);
g.clearRect(0, 0, ri.getWidth(), ri.getHeight());
g.drawImage((BufferedImage)ri, 0, 0, null);
g.dispose();
ri = convertedImg;
}
ImageEncoder encoder = ImageEncodingHelper.createRenderedImageEncoder(ri);
Dimension imgDim = new Dimension(ri.getWidth(), ri.getHeight());
String imgDescription = ri.getClass().getName();
ImageEncodingHelper helper = new ImageEncodingHelper(ri);
ColorModel cm = helper.getEncodedColorModel();
PSImageUtils.writeImage(encoder, imgDim, imgDescription, targetRect, cm, gen, ri);
}
/** {@inheritDoc} */
public void generateForm(RenderingContext context, Image image, PSImageFormResource form)
throws IOException {
PSRenderingContext psContext = (PSRenderingContext)context;
PSGenerator gen = psContext.getGenerator();
ImageRendered imageRend = (ImageRendered)image;
ImageInfo info = image.getInfo();
String imageDescription = info.getMimeType() + " " + info.getOriginalURI();
RenderedImage ri = imageRend.getRenderedImage();
FormGenerator formGen = new ImageFormGenerator(
form.getName(), imageDescription,
info.getSize().getDimensionPt(),
ri, false);
formGen.generate(gen);
}
/** {@inheritDoc} */
public int getPriority() {
return 300;
}
/** {@inheritDoc} */
public Class getSupportedImageClass() {
return ImageRendered.class;
}
/** {@inheritDoc} */
public ImageFlavor[] getSupportedImageFlavors() {
return FLAVORS;
}
/** {@inheritDoc} */
public boolean isCompatible(RenderingContext targetContext, Image image) {
return (image == null || image instanceof ImageRendered)
&& targetContext instanceof PSRenderingContext;
}
}