ColorSpace.java example

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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.
 */
/**
 * @author Oleg V. Khaschansky
 */
package com.google.code.appengine.awt.color;

import java.io.Serializable;

import org.apache.harmony.awt.gl.color.LUTColorConverter;
import org.apache.harmony.awt.internal.nls.Messages;

import com.google.code.appengine.awt.color.ColorSpace;
import com.google.code.appengine.awt.color.ICC_ColorSpace;



public abstract class ColorSpace implements Serializable {

    private static final long serialVersionUID = -409452704308689724L;

    public static final int TYPE_XYZ = 0;

    public static final int TYPE_Lab = 1;

    public static final int TYPE_Luv = 2;

    public static final int TYPE_YCbCr = 3;

    public static final int TYPE_Yxy = 4;

    public static final int TYPE_RGB = 5;

    public static final int TYPE_GRAY = 6;

    public static final int TYPE_HSV = 7;

    public static final int TYPE_HLS = 8;

    public static final int TYPE_CMYK = 9;

    public static final int TYPE_CMY = 11;

    public static final int TYPE_2CLR = 12;

    public static final int TYPE_3CLR = 13;

    public static final int TYPE_4CLR = 14;

    public static final int TYPE_5CLR = 15;

    public static final int TYPE_6CLR = 16;

    public static final int TYPE_7CLR = 17;

    public static final int TYPE_8CLR = 18;

    public static final int TYPE_9CLR = 19;

    public static final int TYPE_ACLR = 20;

    public static final int TYPE_BCLR = 21;

    public static final int TYPE_CCLR = 22;

    public static final int TYPE_DCLR = 23;

    public static final int TYPE_ECLR = 24;

    public static final int TYPE_FCLR = 25;

    public static final int CS_sRGB = 1000;

    public static final int CS_LINEAR_RGB = 1004;

    public static final int CS_CIEXYZ = 1001;

    public static final int CS_PYCC = 1002;

    public static final int CS_GRAY = 1003;

    private static ColorSpace cs_Gray = null;
    private static ColorSpace cs_PYCC = null;
    private static ColorSpace cs_CIEXYZ = null;
    private static ColorSpace cs_LRGB = null;
    private static ColorSpace cs_sRGB = null;

    private int type;
    private int numComponents;

    protected ColorSpace(int type, int numcomponents) {
        this.numComponents = numcomponents;
        this.type = type;
    }

    public String getName(int idx) {
        if (idx < 0 || idx > numComponents - 1) {
            // awt.16A=Invalid component index: {0}
            throw new IllegalArgumentException(Messages.getString("awt.16A", idx)); //$NON-NLS-1$
        }

      return "Unnamed color component #" + idx; //$NON-NLS-1$
    }

    public abstract float[] toRGB(float[] colorvalue);

    public abstract float[] toCIEXYZ(float[] colorvalue);

    public abstract float[] fromRGB(float[] rgbvalue);

    public abstract float[] fromCIEXYZ(float[] colorvalue);

    public float getMinValue(int component) {
        if (component < 0 || component > numComponents - 1) {
            // awt.16A=Invalid component index: {0}
            throw new IllegalArgumentException(Messages.getString("awt.16A", component)); //$NON-NLS-1$
        }
        return 0;
    }

    public float getMaxValue(int component) {
        if (component < 0 || component > numComponents - 1) {
            // awt.16A=Invalid component index: {0}
            throw new IllegalArgumentException(Messages.getString("awt.16A", component)); //$NON-NLS-1$
        }
        return 1;
    }

    public boolean isCS_sRGB() {
        // If our color space is sRGB, then cs_sRGB
        // is already initialized
        return (this == cs_sRGB);
    }

    public int getType() {
        return type;
    }

    public int getNumComponents() {
        return numComponents;
    }

    public static ColorSpace getInstance(int colorspace) {
        switch (colorspace) {
            case CS_sRGB:
                if (cs_sRGB == null) {
                    cs_sRGB = new ICC_ColorSpace(
                            new ICC_ProfileStub(CS_sRGB));
                    LUTColorConverter.sRGB_CS = cs_sRGB;
                            //ICC_Profile.getInstance (CS_sRGB));
                }
                return cs_sRGB;
            case CS_CIEXYZ:
                if (cs_CIEXYZ == null) {
                    cs_CIEXYZ = new ICC_ColorSpace(
                            new ICC_ProfileStub(CS_CIEXYZ));
                            //ICC_Profile.getInstance (CS_CIEXYZ));
                }
                return cs_CIEXYZ;
            case CS_GRAY:
                if (cs_Gray == null) {
                    cs_Gray = new ICC_ColorSpace(
                            new ICC_ProfileStub(CS_GRAY));
                    LUTColorConverter.LINEAR_GRAY_CS = cs_Gray;
                            //ICC_Profile.getInstance (CS_GRAY));
                }
                return cs_Gray;
            case CS_PYCC:
                if (cs_PYCC == null) {
                    cs_PYCC = new ICC_ColorSpace(
                            new ICC_ProfileStub(CS_PYCC));
                            //ICC_Profile.getInstance (CS_PYCC));
                }
                return cs_PYCC;
            case CS_LINEAR_RGB:
                if (cs_LRGB == null) {
                    cs_LRGB = new ICC_ColorSpace(
                            new ICC_ProfileStub(CS_LINEAR_RGB));
                    LUTColorConverter.LINEAR_GRAY_CS = cs_Gray;
                            //ICC_Profile.getInstance (CS_LINEAR_RGB));
                }
                return cs_LRGB;
            default:
        }

        // Unknown argument passed
        // awt.16B=Not a predefined colorspace
        throw new IllegalArgumentException(Messages.getString("awt.16B")); //$NON-NLS-1$
    }
}