001/* =================================================== 002 * JFreeSVG : an SVG library for the Java(tm) platform 003 * =================================================== 004 * 005 * (C)opyright 2013-2021, by Object Refinery Limited. All rights reserved. 006 * 007 * Project Info: http://www.jfree.org/jfreesvg/index.html 008 * 009 * This program is free software: you can redistribute it and/or modify 010 * it under the terms of the GNU General Public License as published by 011 * the Free Software Foundation, either version 3 of the License, or 012 * (at your option) any later version. 013 * 014 * This program is distributed in the hope that it will be useful, 015 * but WITHOUT ANY WARRANTY; without even the implied warranty of 016 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 017 * GNU General Public License for more details. 018 * 019 * You should have received a copy of the GNU General Public License 020 * along with this program. If not, see <http://www.gnu.org/licenses/>. 021 * 022 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 023 * Other names may be trademarks of their respective owners.] 024 * 025 * If you do not wish to be bound by the terms of the GPL, an alternative 026 * commercial license can be purchased. For details, please see visit the 027 * JFreeSVG home page: 028 * 029 * http://www.jfree.org/jfreesvg 030 * 031 */ 032 033package org.jfree.graphics2d; 034 035import java.awt.RadialGradientPaint; 036import java.util.Arrays; 037 038/** 039 * A wrapper for a {@code RadialGradientPaint} that can be used as the key 040 * for a {@code Map} (including a {@code HashMap}). This class is 041 * used internally by {@code SVGGraphics2D} to track and re-use gradient 042 * definitions. {@code GradientPaint} itself does not implement the 043 * {@code equals()} and {@code hashCode()} methods, so it doesn't make a good 044 * key for a {@code Map}. 045 */ 046public class RadialGradientPaintKey { 047 048 private final RadialGradientPaint paint; 049 050 /** 051 * Creates a new instance. 052 * 053 * @param rgp the radial gradient paint ({@code null} not permitted). 054 */ 055 public RadialGradientPaintKey(RadialGradientPaint rgp) { 056 Args.nullNotPermitted(rgp, "rgp"); 057 this.paint = rgp; 058 } 059 060 /** 061 * Returns the {@code RadialGradientPaint} that was supplied to the 062 * constructor. 063 * 064 * @return The {@code RadialGradientPaint} (never {@code null}). 065 */ 066 public RadialGradientPaint getPaint() { 067 return this.paint; 068 } 069 070 /** 071 * Tests this instance for equality with an arbitrary object. 072 * 073 * @param obj the object to test ({@code null} permitted). 074 * 075 * @return A boolean. 076 */ 077 @Override 078 public boolean equals(Object obj) { 079 if (obj == this) { 080 return true; 081 } 082 if (! (obj instanceof RadialGradientPaint)) { 083 return false; 084 } 085 RadialGradientPaint that = (RadialGradientPaint) obj; 086 if (!this.paint.getCenterPoint().equals(that.getCenterPoint())) { 087 return false; 088 } 089 if (!this.paint.getFocusPoint().equals(that.getCenterPoint())) { 090 return false; 091 } 092 if (!Arrays.equals(this.paint.getColors(), that.getColors())) { 093 return false; 094 } 095 if (!Arrays.equals(this.paint.getFractions(), that.getFractions())) { 096 return false; 097 } 098 return true; 099 } 100 101 /** 102 * Returns a hash code for this instance. 103 * 104 * @return A hash code. 105 */ 106 @Override 107 public int hashCode() { 108 int hash = 5; 109 hash = 47 * hash + this.paint.getCenterPoint().hashCode(); 110 hash = 47 * hash + this.paint.getFocusPoint().hashCode(); 111 hash = 47 * hash + Float.floatToIntBits(this.paint.getRadius()); 112 hash = 47 * hash + Arrays.hashCode(this.paint.getColors()); 113 hash = 47 * hash + Arrays.hashCode(this.paint.getFractions()); 114 return hash; 115 } 116 117}