Returns true if the two Paint objects are equal OR both null. : Gradient Paint « 2D Graphics GUI « Java
Returns true if the two Paint objects are equal OR both null.
import java.awt.GradientPaint;
import java.awt.Paint;
/*
* JCommon : a free general purpose class library for the Java(tm) platform
*
*
* (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jcommon/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.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------------
* PaintUtilities.java
* -------------------
* (C) Copyright 2003-2005, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* $Id: PaintUtilities.java,v 1.10 2007/11/02 17:50:37 taqua Exp $
*
* Changes
* -------
* 13-Nov-2003 : Version 1 (DG);
* 04-Oct-2004 : Renamed PaintUtils --> PaintUtilities (DG);
* 23-Feb-2005 : Rewrote equal() method with less indenting required (DG);
*
*/
public class Main {
/**
* 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(final Paint p1, final Paint p2) {
// handle cases where either or both arguments are null
if (p1 == null) {
return (p2 == null);
}
if (p2 == null) {
return false;
}
boolean result = false;
// handle GradientPaint as a special case...
if (p1 instanceof GradientPaint && p2 instanceof GradientPaint) {
final GradientPaint gp1 = (GradientPaint) p1;
final 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;
}
}
