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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package com.sun.java.swing.plaf.gtk;
import javax.swing.plaf.synth.ColorType;
import java.awt.Color;
import javax.swing.plaf.ColorUIResource;
/**
* @author Scott Violet
*/
public class GTKColorType extends ColorType {
// GTK allows you to specify the foreground and background in a
// gtkrc, the rest (dark, mid, light) are calculated from these
// values.
public static final ColorType LIGHT = new GTKColorType("Light");
public static final ColorType DARK = new GTKColorType("Dark");
public static final ColorType MID = new GTKColorType("Mid");
public static final ColorType BLACK = new GTKColorType("Black");
public static final ColorType WHITE = new GTKColorType("White");
public static final int MAX_COUNT;
private static final float[] HLS_COLORS = new float[3];
private static final Object HLS_COLOR_LOCK = new Object();
static {
MAX_COUNT = WHITE.getID() + 1;
}
private static int hlsToRGB(float h, float l, float s) {
float m2 = (l <= .5f) ? (l * (1 + s)) : (l + s - l * s);
float m1 = 2.0f * l - m2;
float r, g, b;
if (s == 0.0) {
if (h == 0.0) {
r = g = b = l;
}
else {
r = g = b = 0;
}
}
else {
r = hlsValue(m1, m2, h + 120);
g = hlsValue(m1, m2, h);
b = hlsValue(m1, m2, h - 120);
}
return (((int)(r * 255)) << 16) | (((int)(g * 255.0)) << 8) |
((int)(b * 255));
}
private static float hlsValue(float n1, float n2, float h) {
if (h > 360) {
h -= 360;
}
else if (h < 0) {
h += 360;
}
if (h < 60) {
return n1 + (n2 - n1) * h / 60.0f;
}
else if (h < 180) {
return n2;
}
else if (h < 240) {
return n1 + (n2 - n1) * (240.0f - h) / 60.0f;
}
return n1;
}
/**
* Converts from RGB color space to HLS colorspace.
*/
private static float[] rgbToHLS(int rgb, float[] hls) {
float r = ((rgb & 0xFF0000) >> 16) / 255.0f;
float g = ((rgb & 0xFF00) >> 8) / 255.0f;
float b = (rgb & 0xFF) / 255.0f;
/* calculate lightness */
float max = Math.max(Math.max(r, g), b);
float min = Math.min(Math.min(r, g), b);
float l = (max + min) / 2.0f;
float s = 0;
float h = 0;
if (max != min) {
float delta = max - min;
s = (l <= .5f) ? (delta / (max + min)) : (delta / (2.0f - max -min));
if (r == max) {
h = (g - b) / delta;
}
else if (g == max) {
h = 2.0f + (b - r) / delta;
}
else {
h = 4.0f + (r - g) / delta;
}
h *= 60.0f;
if (h < 0) {
h += 360.0f;
}
}
if (hls == null) {
hls = new float[3];
}
hls[0] = h;
hls[1] = l;
hls[2] = s;
return hls;
}
/**
* Creates and returns a new color derived from the passed in color.
* The transformation is done in the HLS color space using the specified
* arguments to scale.
*
* @param color Color to alter
* @param hFactory Amount to scale the hue
* @param lFactor Amount to scale the lightness
* @param sFactory Amount to sacle saturation
* @return newly created color
*/
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