Java tutorial
/* * 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: ImageRenderedAdapter.java 1357883 2012-07-05 20:29:53Z gadams $ */ package org.apache.fop.render.pdf; import java.awt.color.ColorSpace; import java.awt.color.ICC_ColorSpace; import java.awt.color.ICC_Profile; import java.awt.image.ColorModel; import java.awt.image.IndexColorModel; import java.awt.image.RenderedImage; import java.io.IOException; import java.io.OutputStream; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.xmlgraphics.image.loader.impl.ImageRendered; import org.apache.xmlgraphics.ps.ImageEncodingHelper; import org.apache.fop.pdf.AlphaRasterImage; import org.apache.fop.pdf.PDFColor; import org.apache.fop.pdf.PDFDeviceColorSpace; import org.apache.fop.pdf.PDFDictionary; import org.apache.fop.pdf.PDFDocument; import org.apache.fop.pdf.PDFFilter; import org.apache.fop.pdf.PDFFilterList; import org.apache.fop.pdf.PDFReference; /** * PDFImage implementation for the PDF renderer which handles RenderedImages. */ public class ImageRenderedAdapter extends AbstractImageAdapter { /** logging instance */ private static Log log = LogFactory.getLog(ImageRenderedAdapter.class); private ImageEncodingHelper encodingHelper; private PDFFilter pdfFilter = null; private String maskRef; private PDFReference softMask; /** * Creates a new PDFImage from an Image instance. * @param image the image * @param key XObject key */ public ImageRenderedAdapter(ImageRendered image, String key) { super(image, key); this.encodingHelper = new ImageEncodingHelper(image.getRenderedImage(), true); } /** * Returns the ImageRendered instance for this adapter. * @return the ImageRendered instance */ public ImageRendered getImage() { return ((ImageRendered) this.image); } /** {@inheritDoc} */ @Override public int getWidth() { RenderedImage ri = getImage().getRenderedImage(); return ri.getWidth(); } /** {@inheritDoc} */ @Override public int getHeight() { RenderedImage ri = getImage().getRenderedImage(); return ri.getHeight(); } private ColorModel getEffectiveColorModel() { return encodingHelper.getEncodedColorModel(); } /** {@inheritDoc} */ @Override protected ColorSpace getImageColorSpace() { return getEffectiveColorModel().getColorSpace(); } /** {@inheritDoc} */ @Override protected ICC_Profile getEffectiveICCProfile() { ColorSpace cs = getImageColorSpace(); if (cs instanceof ICC_ColorSpace) { ICC_ColorSpace iccSpace = (ICC_ColorSpace) cs; return iccSpace.getProfile(); } else { return null; } } /** {@inheritDoc} */ @Override public void setup(PDFDocument doc) { RenderedImage ri = getImage().getRenderedImage(); super.setup(doc); //Handle transparency mask if applicable ColorModel orgcm = ri.getColorModel(); if (orgcm.hasAlpha() && orgcm.getTransparency() == ColorModel.TRANSLUCENT) { doc.getProfile().verifyTransparencyAllowed(image.getInfo().getOriginalURI()); //TODO Implement code to combine image with background color if transparency is not //allowed (need BufferedImage support for that) AlphaRasterImage alphaImage = new AlphaRasterImage("Mask:" + getKey(), ri); this.softMask = doc.addImage(null, alphaImage).makeReference(); } } /** {@inheritDoc} */ public PDFDeviceColorSpace getColorSpace() { // DeviceGray, DeviceRGB, or DeviceCMYK return toPDFColorSpace(getEffectiveColorModel().getColorSpace()); } /** {@inheritDoc} */ public int getBitsPerComponent() { ColorModel cm = getEffectiveColorModel(); if (cm instanceof IndexColorModel) { IndexColorModel icm = (IndexColorModel) cm; return icm.getComponentSize(0); } else { return cm.getComponentSize(0); } } /** {@inheritDoc} */ @Override public boolean isTransparent() { ColorModel cm = getEffectiveColorModel(); if (cm instanceof IndexColorModel) { if (cm.getTransparency() == IndexColorModel.TRANSLUCENT) { return true; } } return (getImage().getTransparentColor() != null); } /** {@inheritDoc} */ @Override public PDFColor getTransparentColor() { ColorModel cm = getEffectiveColorModel(); if (cm instanceof IndexColorModel) { IndexColorModel icm = (IndexColorModel) cm; if (cm.getTransparency() == IndexColorModel.TRANSLUCENT) { int transPixel = icm.getTransparentPixel(); return new PDFColor(icm.getRed(transPixel), icm.getGreen(transPixel), icm.getBlue(transPixel)); } } return new PDFColor(getImage().getTransparentColor()); } /** {@inheritDoc} */ @Override public String getMask() { return maskRef; } /** {@inheritDoc} */ @Override public PDFReference getSoftMaskReference() { return softMask; } /** {@inheritDoc} */ public PDFFilter getPDFFilter() { return pdfFilter; } /** {@inheritDoc} */ public void outputContents(OutputStream out) throws IOException { long start = System.currentTimeMillis(); encodingHelper.encode(out); long duration = System.currentTimeMillis() - start; if (log.isDebugEnabled()) { log.debug("Image encoding took " + duration + "ms"); } } /** {@inheritDoc} */ @Override public void populateXObjectDictionary(PDFDictionary dict) { ColorModel cm = getEffectiveColorModel(); if (cm instanceof IndexColorModel) { IndexColorModel icm = (IndexColorModel) cm; super.populateXObjectDictionaryForIndexColorModel(dict, icm); } } /** {@inheritDoc} */ public String getFilterHint() { return PDFFilterList.IMAGE_FILTER; } }