de.intarsys.pdf.pd.PDCSLab Maven / Gradle / Ivy

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/*
 * Copyright (c) 2007, intarsys consulting GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * - Neither the name of intarsys nor the names of its contributors may be used
 *   to endorse or promote products derived from this software without specific
 *   prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package de.intarsys.pdf.pd;

import de.intarsys.pdf.cos.COSArray;
import de.intarsys.pdf.cos.COSBasedObject;
import de.intarsys.pdf.cos.COSDictionary;
import de.intarsys.pdf.cos.COSName;
import de.intarsys.pdf.cos.COSNumber;
import de.intarsys.pdf.cos.COSObject;

/**
 * Support for lab color space.
 */
public class PDCSLab extends PDCSCIEBased {
    /**
     * The meta class implementation
     */
    public static class MetaClass extends PDCSCIEBased.MetaClass {
        protected MetaClass(Class instanceClass) {
            super(instanceClass);
        }

        @Override
        public COSBasedObject doCreateCOSBasedObjectBasic(COSObject object) {
            return new PDCSLab(object);
        }
    }

    private static final float[] BlackPointDefault = {0.0f, 0.0f, 0.0f};

    public static final COSName DK_BlackPoint = COSName.constant("BlackPoint"); //$NON-NLS-1$

    public static final COSName DK_Range = COSName.constant("Range"); //$NON-NLS-1$

    public static final COSName DK_WhitePoint = COSName.constant("WhitePoint"); //$NON-NLS-1$

    /**
     * The meta class instance
     */
    public static final MetaClass META = new MetaClass(MetaClass.class.getDeclaringClass());

    private static final float[] RangeDefault = {-100.0f, 100.0f, -100.0f, 100.0f};

    private float[] blackPoint;

    private float[] range;

    private float[] whitePoint;

    protected PDCSLab(COSObject object) {
        super(object);

        COSDictionary dict;
        COSArray blackPointArray;
        COSArray rangeArray;
        COSArray whitePointArray;

        dict = ((COSArray) object).get(1).asDictionary();
        // TODO 3 @ehk dict == null ?
        blackPointArray = dict.get(PDCSLab.DK_BlackPoint).asArray();
        if (blackPointArray == null) {
            blackPoint = PDCSLab.BlackPointDefault;
        } else {
            blackPoint = new float[3];
            for (int index = 0; index < blackPoint.length; index++) {
                blackPoint[index] = ((COSNumber) blackPointArray.get(index)).floatValue();
            }
        }

        rangeArray = dict.get(PDCSLab.DK_Range).asArray();
        if (rangeArray == null) {
            range = PDCSLab.RangeDefault;
        } else {
            range = new float[4];

            for (int index = 0; index < 4; index++) {
                range[index] = ((COSNumber) rangeArray.get(index)).floatValue();
            }
        }

        whitePointArray = dict.get(PDCSLab.DK_WhitePoint).asArray();
        whitePoint = new float[3];
        for (int index = 0; index < whitePoint.length; index++) {
            whitePoint[index] = ((COSNumber) whitePointArray.get(index)).floatValue();
        }
    }

    public float[] getWhitePoint() {
        return whitePoint;
    }
}