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Apache FOP (Formatting Objects Processor) is the world's first print formatter driven by XSL formatting objects (XSL-FO) and the world's first output independent formatter. It is a Java application that reads a formatting object (FO) tree and renders the resulting pages to a specified output. Output formats currently supported include PDF, PCL, PS, AFP, TIFF, PNG, SVG, XML (area tree representation), Print, AWT and TXT. The primary output target is PDF.
/*
* 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: PDFCIELabColorSpace.java 1069439 2011-02-10 15:58:57Z jeremias $ */
package org.apache.fop.pdf;
/**
* This class represents a "CIE L*a*b*" color space. It is expected that the components have
* the following ranges: L* [0..100], a* and b* [-127..127]
*/
public class PDFCIELabColorSpace extends PDFArray implements PDFColorSpace {
/**
* Creates a new "CIE L*a*b*" color space. Valid value ranges for the white and black point
* are [0..1] as per the PDF spec.
* @param whitePoint the white point
* @param blackPoint the optional black point (may be null)
*/
public PDFCIELabColorSpace(float[] whitePoint, float[] blackPoint) {
super();
add(new PDFName("Lab"));
PDFDictionary dict = new PDFDictionary();
dict.put("WhitePoint", toPDFArray("White point", whitePoint));
if (whitePoint[1] != 1f) {
throw new IllegalArgumentException("The white point's Y coordinate must be 1.0");
}
if (blackPoint != null) {
dict.put("BlackPoint", toPDFArray("Black point", blackPoint));
}
dict.put("Range", new PDFArray(dict, new int[] {-128, 128, -128, 128}));
add(dict);
}
private PDFArray toPDFArray(String name, float[] whitePoint) {
PDFArray wp = new PDFArray();
if (whitePoint == null || whitePoint.length != 3) {
throw new IllegalArgumentException(name + " must be given an have 3 components");
}
for (int i = 0; i < 3; i++) {
wp.add(whitePoint[i]);
}
return wp;
}
/** {@inheritDoc} */
public String getName() {
return "CS" + this.getObjectNumber();
}
/** {@inheritDoc} */
public int getNumComponents() {
return 3;
}
/** {@inheritDoc} */
public boolean isCMYKColorSpace() {
return false;
}
/** {@inheritDoc} */
public boolean isDeviceColorSpace() {
return false;
}
/** {@inheritDoc} */
public boolean isGrayColorSpace() {
return false;
}
/** {@inheritDoc} */
public boolean isRGBColorSpace() {
return false;
}
}