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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.pdf;
- import java.awt.color.ColorSpace;
- import java.io.IOException;
- import java.io.OutputStream;
-
- import org.apache.xmlgraphics.image.codec.tiff.TIFFImage;
- import org.apache.xmlgraphics.image.loader.impl.ImageRawCCITTFax;
-
- import org.apache.fop.pdf.CCFFilter;
- 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;
-
- /**
- * PDFImage implementation for the PDF renderer which handles raw CCITT fax images.
- */
- public class ImageRawCCITTFaxAdapter extends AbstractImageAdapter {
-
- private PDFFilter pdfFilter;
-
- /**
- * Creates a new PDFImage from an Image instance.
- * @param image the CCITT encoded image
- * @param key XObject key
- */
- public ImageRawCCITTFaxAdapter(ImageRawCCITTFax image, String key) {
- super(image, key);
- }
-
- /**
- * Returns the {@link ImageRawCCITTFax} instance for this adapter.
- * @return the image instance
- */
- public ImageRawCCITTFax getImage() {
- return ((ImageRawCCITTFax)this.image);
- }
-
- /** {@inheritDoc} */
- public void setup(PDFDocument doc) {
- pdfFilter = new CCFFilter();
- pdfFilter.setApplied(true);
- PDFDictionary dict = new PDFDictionary();
- dict.put("Columns", this.image.getSize().getWidthPx());
- int compression = getImage().getCompression();
- switch (compression) {
- case TIFFImage.COMP_FAX_G3_1D :
- dict.put("K", 0);
- break;
- case TIFFImage.COMP_FAX_G3_2D :
- dict.put("K", 1);
- break;
- case TIFFImage.COMP_FAX_G4_2D :
- dict.put("K", -1);
- break;
- default:
- throw new IllegalStateException("Invalid compression scheme: " + compression);
- }
- ((CCFFilter)pdfFilter).setDecodeParms(dict);
-
- super.setup(doc);
- }
-
- /** {@inheritDoc} */
- public PDFDeviceColorSpace getColorSpace() {
- return toPDFColorSpace(ColorSpace.getInstance(ColorSpace.CS_GRAY));
- }
-
- /** {@inheritDoc} */
- public int getBitsPerComponent() {
- return 1;
- }
-
- /** {@inheritDoc} */
- public PDFFilter getPDFFilter() {
- return pdfFilter;
- }
-
- /** {@inheritDoc} */
- public void outputContents(OutputStream out) throws IOException {
- getImage().writeTo(out);
- }
-
- /** {@inheritDoc} */
- public String getFilterHint() {
- return PDFFilterList.TIFF_FILTER;
- }
-
- }
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