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/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed 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 int origLength;
private int len1, len3;
private ICC_Profile cp;
private PDFColorSpace pdfColorSpace;
/**
* @see org.apache.fop.pdf.PDFObject#PDFObject()
*/
public PDFICCStream() {
super();
cp = null;
}
/**
* Sets the color space to encode in PDF.
* @param cp the ICC profile
* @param alt the PDF color space
*/
public void setColorSpace(ICC_Profile cp, PDFColorSpace alt) {
this.cp = cp;
pdfColorSpace = alt;
}
/**
* 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.getColorSpacePDFString() + " ");
}
sb.append("\n/Length " + lengthEntry);
sb.append("\n" + filterEntry);
sb.append("\n>>\n");
return sb.toString();
}
}
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