1 /* 2 * Copyright (c) 2010, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package javafx.scene.text; 27 28 import java.text.BreakIterator; 29 30 import com.sun.javafx.scene.text.TextLayout; 31 32 /** 33 * Represents the hit information in a Text node. 34 * 35 * @since 9 36 */ 37 public class HitInfo { 38 39 private int charIndex; 40 private boolean leading; 41 private int insertionIndex; 42 private String text; 43 44 /** 45 * Create a HitInfo object representing a text index and forward bias. 46 * 47 * @param charIndex the character index. 48 * @param leading whether the hit is on the leading edge of the character. If it is false, it represents the trailing edge. 49 */ 50 HitInfo(int charIndex, int insertionIndex, boolean leading, String text) { 51 this.charIndex = charIndex; 52 this.leading = leading; 53 this.insertionIndex = insertionIndex; 54 this.text = text; 55 } 56 57 /** 58 * The index of the character which this hit information refers to. 59 */ 60 public int getCharIndex() { return charIndex; } 61 62 /** 63 * Indicates whether the hit is on the leading edge of the character. 64 * If it is false, it represents the trailing edge. 65 */ 66 public boolean isLeading() { return leading; } 67 68 private static BreakIterator charIterator = null; 69 /** 70 * Returns the index of the insertion position. 71 */ 72 public int getInsertionIndex() { 73 if (insertionIndex == -1) { 74 insertionIndex = charIndex; 75 if (!leading) { 76 if (text != null) { 77 // Skip complex character clusters / ligatures. 78 if (charIterator == null) { 79 charIterator = BreakIterator.getCharacterInstance(); 80 } 81 charIterator.setText(text); 82 int next = charIterator.following(insertionIndex); 83 if (next == BreakIterator.DONE) { 84 insertionIndex += 1; 85 } else { 86 insertionIndex = next; 87 } 88 } else { 89 insertionIndex += 1; 90 } 91 } 92 } 93 return insertionIndex; 94 } 95 96 @Override public String toString() { 97 return "charIndex: " + charIndex + ", isLeading: " + leading + ", insertionIndex: " + getInsertionIndex(); 98 } 99 }