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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.pdf;
import java.awt.color.ICC_Profile;
import java.io.IOException;
import java.io.OutputStream;
/**
* Special PDFStream for ICC profiles (color profiles).
*/
public class PDFICCStream extends PDFStream {
private ICC_Profile cp;
private PDFDeviceColorSpace pdfColorSpace;
/**
* @see org.apache.fop.pdf.PDFObject#PDFObject()
*/
public PDFICCStream() {
super();
cp = null;
}
/**
* Sets the color space to encode in PDF.
* @param icc the ICC profile
* @param alt the PDF color space
*/
public void setColorSpace(ICC_Profile icc, PDFDeviceColorSpace alt) {
this.cp = icc;
pdfColorSpace = alt;
}
/** @return the ICC profile */
public ICC_Profile getICCProfile() {
return this.cp;
}
/**
* overload the base object method so we don't have to copy
* byte arrays around so much
* @see org.apache.fop.pdf.PDFObject#output(OutputStream)
*/
protected int output(java.io.OutputStream stream)
throws java.io.IOException {
int length = super.output(stream);
this.cp = null; //Free ICC stream when it's not used anymore
return length;
}
/**
* @see org.apache.fop.pdf.PDFStream#outputRawStreamData(OutputStream)
*/
protected void outputRawStreamData(OutputStream out) throws IOException {
cp.write(out);
}
/**
* @see org.apache.fop.pdf.AbstractPDFStream#buildStreamDict(String)
*/
protected String buildStreamDict(String lengthEntry) {
final String filterEntry = getFilterList().buildFilterDictEntries();
final StringBuffer sb = new StringBuffer(128);
sb.append(getObjectID());
sb.append("<< ");
sb.append("/N " + cp.getNumComponents());
if (pdfColorSpace != null) {
sb.append("\n/Alternate /" + pdfColorSpace.getName() + " ");
}
sb.append("\n/Length " + lengthEntry);
sb.append("\n" + filterEntry);
sb.append("\n>>\n");
return sb.toString();
}
}
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