de.intarsys.pdf.pd.PDAxialShading 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;

/**
 * Use axial shading for filling the shape.
 */
public class PDAxialShading extends PDShading {
    /**
     * The meta class implementation
     */
    public static class MetaClass extends PDShading.MetaClass {
        protected MetaClass(Class paramInstanceClass) {
            super(paramInstanceClass);
        }

        @Override
        protected COSBasedObject doCreateCOSBasedObject(COSObject object) {
            return new PDAxialShading(object);
        }
    }

    private static final COSName DK_Coords = COSName.constant("Coords"); //$NON-NLS-1$

    private static final COSName DK_Domain = COSName.constant("Domain"); //$NON-NLS-1$

    private static final COSName DK_Extend = COSName.constant("Extend"); //$NON-NLS-1$

    private static final COSName DK_Function = COSName.constant("Function"); //$NON-NLS-1$

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

    private float[] coords;

    private float[] domain;

    private boolean[] extend;

    private PDFunction function;

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

        COSArray cosCoords;
        COSObject cosDomain;
        COSObject cosExtend;

        cosCoords = object.asDictionary().get(DK_Coords).asArray();
        coords = new float[4];
        for (int index = 0; index < 4; index++) {
            coords[index] = ((COSNumber) cosCoords.get(index)).floatValue();
        }

        cosDomain = object.asDictionary().get(DK_Domain);
        if (cosDomain.isNull()) {
            domain = new float[]{0, 1};
        } else {
            domain = new float[2];
            for (int index = 0; index < 2; index++) {
                domain[index] = ((COSNumber) cosDomain.asArray().get(index)).floatValue();
            }
        }

        cosExtend = object.asDictionary().get(DK_Extend);
        if (cosExtend.isNull()) {
            extend = new boolean[]{false, false};
        } else {
            extend = new boolean[2];
            for (int index = 0; index < 2; index++) {
                extend[index] = cosExtend.asArray().get(index).asBoolean().booleanValue();
            }
        }

        // function will be resolved lazily
    }

    public float[] getCoords() {
        return coords;
    }

    public float[] getDomain() {
        return domain;
    }

    public PDFunction getFunction() {
        if (function == null) {
            function = (PDFunction) PDFunction.META.createFromCos(((COSDictionary) cosGetObject()).get(DK_Function));
        }
        return function;
    }

    @Override
    public int getShadingType() {
        return SHADING_TYPE_AXIAL;
    }
}