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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.
*/
/* $Id: NamedColorSpace.java 1051421 2010-12-21 08:54:25Z jeremias $ */
package org.apache.xmlgraphics.java2d.color;
import java.awt.Color;
import java.awt.color.ColorSpace;
/**
* Implements a pseudo color space for a named color which is defined in the CIE XYZ color space.
* At the moment, this color space always returns the fully opaque color regardless of the single
* component value (tint) given to its conversion methods.
*/
public class NamedColorSpace extends ColorSpace implements ColorSpaceOrigin {
private static final long serialVersionUID = -8957543225908514658L;
private final String name;
private final float[] xyz;
private final String profileName;
private final String profileURI;
/**
* Creates a new named color.
* @param name the color name
* @param xyz the CIE XYZ coordinates (valid values: 0.0f to 1.0f, although
* values slightly larger than 1.0f are common)
*/
public NamedColorSpace(String name, float[] xyz) {
this(name, xyz, null, null);
}
/**
* Creates a new named color.
* @param name the color name
* @param xyz the CIE XYZ coordinates (valid values: 0.0f to 1.0f, although
* values slightly larger than 1.0f are common)
* @param profileName Optional profile name associated with this color space
* @param profileURI Optional profile URI associated with this color space
*/
public NamedColorSpace(String name, float[] xyz, String profileName, String profileURI) {
super(ColorSpace.TYPE_GRAY, 1);
checkNumComponents(xyz, 3);
if (name == null || name.trim().length() == 0) {
throw new IllegalArgumentException("No name provided for named color space");
}
this.name = name.trim();
this.xyz = new float[3];
System.arraycopy(xyz, 0, this.xyz, 0, 3);
this.profileName = profileName;
this.profileURI = profileURI;
}
/**
* Creates a new named color.
* @param name the color name
* @param color the color to use when the named color's specific color properties are not
* available.
* @param profileName Optional profile name associated with this color space
* @param profileURI Optional profile URI associated with this color space
*/
public NamedColorSpace(String name, Color color, String profileName, String profileURI) {
this(name, color.getColorSpace().toCIEXYZ(color.getColorComponents(null)),
profileName, profileURI);
}
/**
* Creates a new named color.
* @param name the color name
* @param color the color to use when the named color's specific color properties are not
* available.
*/
public NamedColorSpace(String name, Color color) {
this(name, color.getColorSpace().toCIEXYZ(color.getColorComponents(null)), null, null);
}
private void checkNumComponents(float[] colorvalue, int expected) {
if (colorvalue == null) {
throw new NullPointerException("color value may not be null");
}
if (colorvalue.length != expected) {
throw new IllegalArgumentException("Expected " + expected
+ " components, but got " + colorvalue.length);
}
}
/**
* Returns the color name.
* @return the color name
*/
public String getColorName() {
return this.name;
}
/** {@inheritDoc} */
public String getProfileName() {
return this.profileName;
}
/** {@inheritDoc} */
public String getProfileURI() {
return this.profileURI;
}
/**
* Returns the XYZ coordinates of the named color.
* @return the XYZ coordinates of the named color
*/
public float[] getXYZ() {
float[] result = new float[this.xyz.length];
System.arraycopy(this.xyz, 0, result, 0, this.xyz.length);
return result;
}
/**
* Returns an sRGB-based color representing the full-tint color defined by this named color
* space.
* @return the sRGB color
*/
public Color getRGBColor() {
float[] comps = toRGB(this.xyz);
return new Color(comps[0], comps[1], comps[2]);
}
/** {@inheritDoc} */
public float getMinValue(int component) {
return getMaxValue(component); //same as min, i.e. always 1.0
}
/** {@inheritDoc} */
public float getMaxValue(int component) {
switch (component) {
case 0:
return 1f;
default:
throw new IllegalArgumentException("A named color space only has 1 component!");
}
}
/** {@inheritDoc} */
public String getName(int component) {
switch (component) {
case 0:
return "Tint";
default:
throw new IllegalArgumentException("A named color space only has 1 component!");
}
}
/** {@inheritDoc} */
public float[] fromCIEXYZ(float[] colorvalue) {
//ignore the given color values as this is a fixed color.
return new float[] {1.0f}; //Return value for full tint
}
/** {@inheritDoc} */
public float[] fromRGB(float[] rgbvalue) {
//ignore the given color values as this is a fixed color.
return new float[] {1.0f}; //Return value for full tint
}
/** {@inheritDoc} */
public float[] toCIEXYZ(float[] colorvalue) {
float[] ret = new float[3];
System.arraycopy(this.xyz, 0, ret, 0, this.xyz.length);
return ret;
}
/** {@inheritDoc} */
public float[] toRGB(float[] colorvalue) {
ColorSpace sRGB = ColorSpace.getInstance(ColorSpace.CS_sRGB);
return sRGB.fromCIEXYZ(this.xyz);
}
/** {@inheritDoc} */
public boolean equals(Object obj) {
if (!(obj instanceof NamedColorSpace)) {
return false;
}
NamedColorSpace other = (NamedColorSpace)obj;
if (!this.name.equals(other.name)) {
return false;
}
for (int i = 0, c = this.xyz.length; i < c; i++) {
if (this.xyz[i] != other.xyz[i]) {
return false;
}
}
return true;
}
/** {@inheritDoc} */
public int hashCode() {
return (this.profileName + name).hashCode();
}
/** {@inheritDoc} */
public String toString() {
return "Named Color Space: " + getColorName();
}
}
