/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* -------------------
* PaintUtils.java
* -------------------
* (C) Copyright 2003-2012, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* $Id: PaintUtils.java,v 1.10 2007/11/02 17:50:37 taqua Exp $
*
* Changes
* -------
* 13-Nov-2003 : Version 1 (DG);
* 04-Oct-2004 : Renamed PaintUtils --> PaintUtils (DG);
* 23-Feb-2005 : Rewrote equal() method with less indenting required (DG);
* 16-Jun-2012 : Moved from JCommon to JFreeChart (DG);
*
*/
package org.jfree.chart.util;
import java.awt.GradientPaint;
import java.awt.Paint;
import java.util.Map;
/**
* Utility code that relates to <code>Paint</code> objects.
*/
public class PaintUtils {
/**
* Private constructor prevents object creation.
*/
private PaintUtils() {
}
/**
* Returns <code>true</code> if the two <code>Paint</code> objects are equal
* OR both <code>null</code>. This method handles
* <code>GradientPaint</code> as a special case.
*
* @param p1 paint 1 (<code>null</code> permitted).
* @param p2 paint 2 (<code>null</code> permitted).
*
* @return A boolean.
*/
public static boolean equal(Paint p1, Paint p2) {
// handle cases where either or both arguments are null
if (p1 == null) {
return (p2 == null);
}
if (p2 == null) {
return false;
}
boolean result;
// handle GradientPaint as a special case...
if (p1 instanceof GradientPaint && p2 instanceof GradientPaint) {
GradientPaint gp1 = (GradientPaint) p1;
GradientPaint gp2 = (GradientPaint) p2;
result = gp1.getColor1().equals(gp2.getColor1())
&& gp1.getColor2().equals(gp2.getColor2())
&& gp1.getPoint1().equals(gp2.getPoint1())
&& gp1.getPoint2().equals(gp2.getPoint2())
&& gp1.isCyclic() == gp2.isCyclic()
&& gp1.getTransparency() == gp1.getTransparency();
}
else {
result = p1.equals(p2);
}
return result;
}
/**
* Returns <code>true</code> if the maps contain the same keys and
* {@link Paint} values, and <code>false</code> otherwise.
*
* @param m1 map 1 (<code>null</code> not permitted).
* @param m2 map 2 (<code>null</code> not permitted).
*
* @return A boolean.
*/
public static boolean equalMaps(Map<?, Paint> m1, Map<?, Paint> m2) {
if (m1.size() != m2.size()) {
return false;
}
for (Map.Entry<?, Paint> entry : m1.entrySet()) {
if (!m2.containsKey(entry.getKey())) {
return false;
}
if (!PaintUtils.equal(entry.getValue(),
m2.get(entry.getKey()))) {
return false;
}
}
return true;
}
}