/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* Copyright 2004 The Apache Software Foundation
*
* Licensed 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.
*/
package webtiersample;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Iterator;
import java.util.StringTokenizer;
/**
* Implicit object that ${Color} resolves to.
*
* @author Mark Roth
*/
public class ColorImplicitObject {
/**
* Set of colors by name
*/
private static HashMap<String,ColorRGB> colorNames = null;
/**
* Returns a color from an HTML-style hex String, e.g. #f0f0f0
*/
public static ColorRGB fromHex(String hex) {
return fromColor(java.awt.Color.decode(hex));
}
/**
* Returns a color from a java.awt.Color object.
*/
public static ColorRGB fromColor(java.awt.Color color) {
return new ColorRGB(color.getRed(), color.getGreen(), color.getBlue());
}
/**
* Returns a color from a name. Uses the resource rgb.txt to load color
* names.
*/
public static ColorRGB fromName(String name) {
if (colorNames == null) {
loadColorNames();
}
return colorNames.get(name);
}
public String toString() {
return "Color Implicit Object";
}
/**
* Package-scope method to get list of all color names
*/
static Iterator<String> colorNameIterator() {
if (colorNames == null) {
loadColorNames();
}
return colorNames.keySet().iterator();
}
/**
* Loads colors from resource rgb.txt and converts them to instances of
* ColorRGB.
*/
private synchronized static void loadColorNames() {
if (colorNames == null) {
colorNames = new HashMap<String, ColorRGB>();
try {
BufferedReader in = new BufferedReader(new InputStreamReader(
ColorImplicitObject.class.getResourceAsStream(
"/webtiersample/rgb.txt")));
String line;
while ((line = in.readLine()) != null) {
if (!line.startsWith("!")) {
String colorText = line.substring(0, 12);
String colorName = line.substring(12).trim();
StringTokenizer st = new StringTokenizer(
colorText, " ");
int red = Integer.parseInt(st.nextToken().trim());
int green = Integer.parseInt(st.nextToken().trim());
int blue = Integer.parseInt(st.nextToken().trim());
colorNames.put(colorName, new ColorRGB(red, green,
blue));
}
}
in.close();
}
catch (IOException e) {
throw new RuntimeException("Could not load rgb.txt", e);
}
}
}
public static class ColorRGB {
private int red;
private int green;
private int blue;
public ColorRGB(int red, int green, int blue) {
// Handle low or high values robustly.
if (red < 0) {
red = 0;
}
if (red > 255) {
red = 255;
}
this.red = red;
if (green < 0) {
green = 0;
}
if (green > 255) {
green = 255;
}
this.green = green;
if (blue < 0) {
blue = 0;
}
if (blue > 255) {
blue = 255;
}
this.blue = blue;
}
public int getRed() {
return red;
}
public int getGreen() {
return green;
}
public int getBlue() {
return blue;
}
public java.awt.Color getColor() {
return new java.awt.Color(red, green, blue);
}
public ColorRGB getDarker() {
java.awt.Color darkerColor = getColor().darker();
return fromColor(darkerColor);
}
public ColorRGB getBrighter() {
java.awt.Color brighterColor = getColor().brighter();
return fromColor(brighterColor);
}
public String getHex() {
return "#" + toHex(getRed()) + toHex(green) +
toHex(blue);
}
private String toHex(int i) {
String result;
if (i < 16) {
result = "0" + Integer.toHexString(i);
} else {
result = Integer.toHexString(i);
}
return result;
}
public String toString() {
return "Color(" + red + ", " + green + ", " + blue + ')';
}
}
}