123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249 |
- /*
- * 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.pdf;
- import java.awt.color.ColorSpace;
- 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.io.output.ByteArrayOutputStream;
- 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.PDFArray;
- 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.PDFName;
- 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());
- }
-
- /**
- * Returns the ImageRendered instance for this adapter.
- * @return the ImageRendered instance
- */
- public ImageRendered getImage() {
- return ((ImageRendered)this.image);
- }
-
- private ColorModel getEffectiveColorModel() {
- return encodingHelper.getEncodedColorModel();
- }
-
- /** {@inheritDoc} */
- protected ColorSpace getImageColorSpace() {
- return getEffectiveColorModel().getColorSpace();
- }
-
- /** {@inheritDoc} */
- public void setup(PDFDocument doc) {
- RenderedImage ri = getImage().getRenderedImage();
- ColorModel cm = getEffectiveColorModel();
-
- 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} */
- public boolean isTransparent() {
- ColorModel cm = getEffectiveColorModel();
- if (cm instanceof IndexColorModel) {
- if (cm.getTransparency() == IndexColorModel.TRANSLUCENT) {
- return true;
- }
- }
- return (getImage().getTransparentColor() != null);
- }
-
- private static Integer getIndexOfFirstTransparentColorInPalette(RenderedImage image) {
- ColorModel cm = image.getColorModel();
- if (cm instanceof IndexColorModel) {
- IndexColorModel icm = (IndexColorModel)cm;
- //Identify the transparent color in the palette
- byte[] alphas = new byte[icm.getMapSize()];
- byte[] reds = new byte[icm.getMapSize()];
- byte[] greens = new byte[icm.getMapSize()];
- byte[] blues = new byte[icm.getMapSize()];
- icm.getAlphas(alphas);
- icm.getReds(reds);
- icm.getGreens(greens);
- icm.getBlues(blues);
- for (int i = 0;
- i < ((IndexColorModel) cm).getMapSize();
- i++) {
- if ((alphas[i] & 0xFF) == 0) {
- return new Integer(i);
- }
- }
- }
- return null;
- }
-
- /** {@inheritDoc} */
- 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} */
- public String getMask() {
- return maskRef;
- }
-
- /** {@inheritDoc} */
- public PDFReference getSoftMaskReference() {
- return softMask;
- }
-
- /** {@inheritDoc} */
- public PDFFilter getPDFFilter() {
- return pdfFilter;
- }
-
- /** {@inheritDoc} */
- public void outputContents(OutputStream out) throws IOException {
- encodingHelper.encode(out);
- }
-
- private static final int MAX_HIVAL = 255;
-
- /** {@inheritDoc} */
- public void populateXObjectDictionary(PDFDictionary dict) {
- ColorModel cm = getEffectiveColorModel();
- if (cm instanceof IndexColorModel) {
- IndexColorModel icm = (IndexColorModel)cm;
- PDFArray indexed = new PDFArray(dict);
- indexed.add(new PDFName("Indexed"));
-
- if (icm.getColorSpace().getType() != ColorSpace.TYPE_RGB) {
- log.warn("Indexed color space is not using RGB as base color space."
- + " The image may not be handled correctly."
- + " Base color space: " + icm.getColorSpace()
- + " Image: " + image.getInfo());
- }
- indexed.add(new PDFName(toPDFColorSpace(icm.getColorSpace()).getName()));
- int c = icm.getMapSize();
- int hival = c - 1;
- if (hival > MAX_HIVAL) {
- throw new UnsupportedOperationException("hival must not go beyond " + MAX_HIVAL);
- }
- indexed.add(new Integer(hival));
- int[] palette = new int[c];
- icm.getRGBs(palette);
- ByteArrayOutputStream baout = new ByteArrayOutputStream();
- for (int i = 0; i < c; i++) {
- //TODO Probably doesn't work for non RGB based color spaces
- //See log warning above
- int entry = palette[i];
- baout.write((entry & 0xFF0000) >> 16);
- baout.write((entry & 0xFF00) >> 8);
- baout.write(entry & 0xFF);
- }
- indexed.add(baout.toByteArray());
-
- dict.put("ColorSpace", indexed);
- dict.put("BitsPerComponent", icm.getPixelSize());
-
- Integer index = getIndexOfFirstTransparentColorInPalette(getImage().getRenderedImage());
- if (index != null) {
- PDFArray mask = new PDFArray(dict);
- mask.add(index);
- mask.add(index);
- dict.put("Mask", mask);
- }
- }
- }
-
- /** {@inheritDoc} */
- public String getFilterHint() {
- return PDFFilterList.IMAGE_FILTER;
- }
-
- }
|