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* Copyright (c) 2005, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package javax.swing.plaf.nimbus;
import javax.swing.UIManager;
import java.awt.Color;
import java.beans.PropertyChangeSupport;
import java.beans.PropertyChangeListener;
/**
* DerivedColor - A color implementation that is derived from a UIManager
* defaults table color and a set of offsets. It can be rederived at any point
* by calling rederiveColor(). For example when its parent color changes and it
* value will update to reflect the new derived color. Property change events
* are fired for the "rgb" property when the derived color changes.
*
* @author Jasper Potts
*/
@SuppressWarnings("serial") // Same-version serialization only
class DerivedColor extends Color {
private final String uiDefaultParentName;
private final float hOffset, sOffset, bOffset;
private final int aOffset;
private int argbValue;
DerivedColor(String uiDefaultParentName, float hOffset, float sOffset, float bOffset, int aOffset) {
super(0);
this.uiDefaultParentName = uiDefaultParentName;
this.hOffset = hOffset;
this.sOffset = sOffset;
this.bOffset = bOffset;
this.aOffset = aOffset;
}
public String getUiDefaultParentName() {
return uiDefaultParentName;
}
public float getHueOffset() {
return hOffset;
}
public float getSaturationOffset() {
return sOffset;
}
public float getBrightnessOffset() {
return bOffset;
}
public int getAlphaOffset() {
return aOffset;
}
/**
* Recalculate the derived color from the UIManager parent color and offsets
*/
public void rederiveColor() {
Color src = UIManager.getColor(uiDefaultParentName);
if (src != null) {
float[] tmp = Color.RGBtoHSB(src.getRed(), src.getGreen(), src.getBlue(), null);
// apply offsets
tmp[0] = clamp(tmp[0] + hOffset);
tmp[1] = clamp(tmp[1] + sOffset);
tmp[2] = clamp(tmp[2] + bOffset);
int alpha = clamp(src.getAlpha() + aOffset);
argbValue = (Color.HSBtoRGB(tmp[0], tmp[1], tmp[2]) & 0xFFFFFF) | (alpha << 24);
} else {
float[] tmp = new float[3];
tmp[0] = clamp(hOffset);
tmp[1] = clamp(sOffset);
tmp[2] = clamp(bOffset);
int alpha = clamp(aOffset);
argbValue = (Color.HSBtoRGB(tmp[0], tmp[1], tmp[2]) & 0xFFFFFF) | (alpha << 24);
}
}
/**
* Returns the RGB value representing the color in the default sRGB {@link java.awt.image.ColorModel}. (Bits 24-31
* are alpha, 16-23 are red, 8-15 are green, 0-7 are blue).
*
* @return the RGB value of the color in the default sRGB <code>ColorModel</code>.
* @see java.awt.image.ColorModel#getRGBdefault
* @see #getRed
* @see #getGreen
* @see #getBlue
* @since 1.0
*/
@Override public int getRGB() {
return argbValue;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (!(o instanceof DerivedColor)) return false;
DerivedColor that = (DerivedColor) o;
if (aOffset != that.aOffset) return false;
if (Float.compare(that.bOffset, bOffset) != 0) return false;
if (Float.compare(that.hOffset, hOffset) != 0) return false;
if (Float.compare(that.sOffset, sOffset) != 0) return false;
if (!uiDefaultParentName.equals(that.uiDefaultParentName)) return false;
return true;
}
@Override
public int hashCode() {
int result = uiDefaultParentName.hashCode();
result = 31 * result + hOffset != +0.0f ?
Float.floatToIntBits(hOffset) : 0;
result = 31 * result + sOffset != +0.0f ?
Float.floatToIntBits(sOffset) : 0;
result = 31 * result + bOffset != +0.0f ?
Float.floatToIntBits(bOffset) : 0;
result = 31 * result + aOffset;
return result;
}
private float clamp(float value) {
if (value < 0) {
value = 0;
} else if (value > 1) {
value = 1;
}
return value;
}
private int clamp(int value) {
if (value < 0) {
value = 0;
} else if (value > 255) {
value = 255;
}
return value;
}
/**
* Returns a string representation of this <code>Color</code>. This method
* is intended to be used only for debugging purposes. The content and
* format of the returned string might vary between implementations. The
* returned string might be empty but cannot be <code>null</code>.
*
* @return a String representation of this <code>Color</code>.
*/
@Override
public String toString() {
Color src = UIManager.getColor(uiDefaultParentName);
String s = "DerivedColor(color=" + getRed() + "," + getGreen() + "," + getBlue() +
" parent=" + uiDefaultParentName +
" offsets=" + getHueOffset() + "," + getSaturationOffset() + ","
+ getBrightnessOffset() + "," + getAlphaOffset();
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