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/*
* 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.
*/
/* $Id$ */
package org.apache.fop.render.ps;
import java.awt.Rectangle;
import java.awt.geom.Rectangle2D;
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.ImageRawCCITTFax;
import org.apache.xmlgraphics.ps.FormGenerator;
import org.apache.xmlgraphics.ps.ImageEncoder;
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 CCITT fax images for PostScript output.
*/
public class PSImageHandlerRawCCITTFax implements PSImageHandler {
private static final ImageFlavor[] FLAVORS = new ImageFlavor[] {
ImageFlavor.RAW_CCITTFAX
};
/** {@inheritDoc} */
public void handleImage(RenderingContext context, Image image, Rectangle pos)
throws IOException {
PSRenderingContext psContext = (PSRenderingContext)context;
PSGenerator gen = psContext.getGenerator();
ImageRawCCITTFax ccitt = (ImageRawCCITTFax)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.Float(
x, y, w, h);
ImageInfo info = image.getInfo();
ImageEncoder encoder = new ImageEncoderCCITTFax(ccitt);
PSImageUtils.writeImage(encoder, info.getSize().getDimensionPx(),
info.getOriginalURI(), targetRect,
ccitt.getColorSpace(), 1, false, gen);
}
/** {@inheritDoc} */
public void generateForm(RenderingContext context, Image image, PSImageFormResource form)
throws IOException {
PSRenderingContext psContext = (PSRenderingContext)context;
PSGenerator gen = psContext.getGenerator();
ImageRawCCITTFax ccitt = (ImageRawCCITTFax)image;
ImageInfo info = image.getInfo();
String imageDescription = info.getMimeType() + " " + info.getOriginalURI();
ImageEncoder encoder = new ImageEncoderCCITTFax(ccitt);
FormGenerator formGen = new ImageFormGenerator(
form.getName(), imageDescription,
info.getSize().getDimensionPt(),
info.getSize().getDimensionPx(),
encoder,
ccitt.getColorSpace(), 1, false);
formGen.generate(gen);
}
/** {@inheritDoc} */
public int getPriority() {
return 200;
}
/** {@inheritDoc} */
public Class getSupportedImageClass() {
return ImageRawCCITTFax.class;
}
/** {@inheritDoc} */
public ImageFlavor[] getSupportedImageFlavors() {
return FLAVORS;
}
/** {@inheritDoc} */
public boolean isCompatible(RenderingContext targetContext, Image image) {
if (targetContext instanceof PSRenderingContext) {
PSRenderingContext psContext = (PSRenderingContext)targetContext;
//The filters required for this implementation need PS level 2 or higher
if (psContext.getGenerator().getPSLevel() >= 2) {
return (image == null || image instanceof ImageRawCCITTFax);
}
}
return false;
}
}
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