| /* |
| * 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 = null; |
| |
| /** |
| * 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; |
| } |
| |
| } |
| |