001 /* TextHitInfo.java -- 002 Copyright (C) 2002, 2005 Free Software Foundation, Inc. 003 004 This file is part of GNU Classpath. 005 006 GNU Classpath is free software; you can redistribute it and/or modify 007 it under the terms of the GNU General Public License as published by 008 the Free Software Foundation; either version 2, or (at your option) 009 any later version. 010 011 GNU Classpath is distributed in the hope that it will be useful, but 012 WITHOUT ANY WARRANTY; without even the implied warranty of 013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 General Public License for more details. 015 016 You should have received a copy of the GNU General Public License 017 along with GNU Classpath; see the file COPYING. If not, write to the 018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 019 02110-1301 USA. 020 021 Linking this library statically or dynamically with other modules is 022 making a combined work based on this library. Thus, the terms and 023 conditions of the GNU General Public License cover the whole 024 combination. 025 026 As a special exception, the copyright holders of this library give you 027 permission to link this library with independent modules to produce an 028 executable, regardless of the license terms of these independent 029 modules, and to copy and distribute the resulting executable under 030 terms of your choice, provided that you also meet, for each linked 031 independent module, the terms and conditions of the license of that 032 module. An independent module is a module which is not derived from 033 or based on this library. If you modify this library, you may extend 034 this exception to your version of the library, but you are not 035 obligated to do so. If you do not wish to do so, delete this 036 exception statement from your version. */ 037 038 package java.awt.font; 039 040 /** 041 * @author John Leuner (jewel@debian.org) 042 */ 043 public final class TextHitInfo 044 { 045 private int charIndex; 046 private boolean leadingEdge; 047 048 TextHitInfo (int charIndex, boolean leadingEdge) 049 { 050 this.charIndex = charIndex; 051 this.leadingEdge = leadingEdge; 052 } 053 054 public int getCharIndex() 055 { 056 return charIndex; 057 } 058 059 public boolean isLeadingEdge() 060 { 061 return leadingEdge; 062 } 063 064 public int getInsertionIndex() 065 { 066 return (leadingEdge ? charIndex : charIndex + 1); 067 } 068 069 public int hashCode() 070 { 071 return charIndex; 072 } 073 074 public boolean equals(Object obj) 075 { 076 if(obj instanceof TextHitInfo) 077 return this.equals((TextHitInfo) obj); 078 079 return false; 080 } 081 082 public boolean equals(TextHitInfo hitInfo) 083 { 084 if (hitInfo == null) 085 return false; 086 087 return (charIndex == hitInfo.getCharIndex ()) 088 && (leadingEdge == hitInfo.isLeadingEdge ()); 089 } 090 091 public static TextHitInfo leading(int charIndex) 092 { 093 return new TextHitInfo (charIndex, true); 094 } 095 096 public static TextHitInfo trailing(int charIndex) 097 { 098 return new TextHitInfo (charIndex, false); 099 } 100 101 public static TextHitInfo beforeOffset(int offset) 102 { 103 return new TextHitInfo ((offset - 1), false); 104 } 105 106 public static TextHitInfo afterOffset(int offset) 107 { 108 return new TextHitInfo (offset, true); 109 } 110 111 public TextHitInfo getOtherHit() 112 { 113 return (leadingEdge ? trailing (charIndex - 1) : leading (charIndex + 1)); 114 } 115 116 public TextHitInfo getOffsetHit(int offset) 117 { 118 return new TextHitInfo (charIndex + offset, leadingEdge); 119 } 120 121 public String toString() 122 { 123 return "TextHitInfo[" 124 + charIndex 125 + (leadingEdge ? "L" : "T" ) 126 + "]"; 127 } 128 }