Mercurial > projects > dwt-win
annotate dwt/custom/Bullet.d @ 315:349b8c12e243
Sync dwt/custom with dwt-linux
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Tue, 07 Oct 2008 16:18:26 +0200 |
| parents | fd9c62a2998e |
| children |
| rev | line source |
|---|---|
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parents:
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1 /******************************************************************************* |
| 246 | 2 * Copyright (c) 2000, 2008 IBM Corporation and others. |
| 155 | 3 * All rights reserved. This program and the accompanying materials |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 10 * Port to the D programming language: | |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 12 *******************************************************************************/ | |
| 13 module dwt.custom.Bullet; | |
| 14 | |
|
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15 import dwt.dwthelper.utils; |
|
349b8c12e243
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16 |
| 155 | 17 import dwt.DWT; |
| 18 import dwt.custom.StyleRange; | |
| 19 import dwt.custom.ST; | |
| 20 import dwt.dwthelper.System; | |
| 21 | |
| 22 /** | |
| 23 * Instances of this class represent bullets in the <code>StyledText</code>. | |
| 24 * <p> | |
| 25 * The hashCode() method in this class uses the values of the public | |
| 26 * fields to compute the hash value. When storing instances of the | |
| 27 * class in hashed collections, do not modify these fields after the | |
| 28 * object has been inserted. | |
| 29 * </p> | |
| 30 * <p> | |
| 31 * Application code does <em>not</em> need to explicitly release the | |
| 32 * resources managed by each instance when those instances are no longer | |
| 33 * required, and thus no <code>dispose()</code> method is provided. | |
| 34 * </p> | |
| 35 * | |
| 36 * @see StyledText#setLineBullet(int, int, Bullet) | |
| 246 | 37 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| 155 | 38 * |
| 39 * @since 3.2 | |
| 40 */ | |
| 41 public class Bullet { | |
| 246 | 42 /** |
| 43 * The bullet type. Possible values are: | |
| 44 * <ul> | |
| 45 * <li><code>ST.BULLET_DOT</code></li> | |
| 46 * <li><code>ST.BULLET_NUMBER</code></li> | |
| 47 * <li><code>ST.BULLET_LETTER_LOWER</code></li> | |
| 48 * <li><code>ST.BULLET_LETTER_UPPER</code></li> | |
| 49 * <li><code>ST.BULLET_TEXT</code></li> | |
| 50 * <li><code>ST.BULLET_CUSTOM</code></li> | |
| 51 * </ul> | |
| 52 */ | |
| 155 | 53 public int type; |
| 246 | 54 |
| 55 /** | |
| 56 * The bullet style. | |
| 57 */ | |
| 155 | 58 public StyleRange style; |
| 246 | 59 |
| 60 /** | |
| 61 * The bullet text. | |
| 62 */ | |
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63 public String text; |
| 246 | 64 |
| 155 | 65 int[] linesIndices; |
| 66 int count; | |
| 67 | |
| 68 /** | |
| 246 | 69 * Create a new bullet with the specified style, and type <code>ST.BULLET_DOT</code>. |
| 155 | 70 * The style must have a glyph metrics set. |
| 71 * | |
| 72 * @param style the style | |
| 73 * | |
| 74 * @exception IllegalArgumentException <ul> | |
| 75 * <li>ERROR_NULL_ARGUMENT when the style or the glyph metrics are null</li> | |
| 76 * </ul> | |
| 77 */ | |
| 78 public this(StyleRange style) { | |
| 79 this(ST.BULLET_DOT, style); | |
| 80 } | |
| 81 /** | |
| 82 * Create a new bullet the specified style and type. | |
| 83 * The style must have a glyph metrics set. | |
| 84 * | |
| 246 | 85 * @param type the bullet type |
| 155 | 86 * @param style the style |
| 87 * | |
| 88 * @exception IllegalArgumentException <ul> | |
| 89 * <li>ERROR_NULL_ARGUMENT when the style or the glyph metrics are null</li> | |
| 90 * </ul> | |
| 91 */ | |
| 92 public this(int type, StyleRange style) { | |
| 93 if (style is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 94 if (style.metrics is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 95 this.type = type; | |
| 96 this.style = style; | |
| 97 } | |
| 98 void addIndices (int startLine, int lineCount) { | |
| 99 if (linesIndices is null) { | |
| 100 linesIndices = new int[lineCount]; | |
| 101 count = lineCount; | |
| 102 for (int i = 0; i < lineCount; i++) linesIndices[i] = startLine + i; | |
| 103 } else { | |
| 104 int modifyStart = 0; | |
| 105 while (modifyStart < count) { | |
| 106 if (startLine <= linesIndices[modifyStart]) break; | |
| 107 modifyStart++; | |
| 108 } | |
| 109 int modifyEnd = modifyStart; | |
| 110 while (modifyEnd < count) { | |
| 111 if (startLine + lineCount <= linesIndices[modifyEnd]) break; | |
| 112 modifyEnd++; | |
| 113 } | |
| 114 int newSize = modifyStart + lineCount + count - modifyEnd; | |
| 115 if (newSize > linesIndices.length) { | |
| 116 int[] newLinesIndices = new int[newSize]; | |
| 117 System.arraycopy(linesIndices, 0, newLinesIndices, 0, count); | |
| 118 linesIndices = newLinesIndices; | |
| 119 } | |
| 120 System.arraycopy(linesIndices, modifyEnd, linesIndices, modifyStart + lineCount, count - modifyEnd); | |
| 121 for (int i = 0; i < lineCount; i++) linesIndices[modifyStart + i] = startLine + i; | |
| 122 count = newSize; | |
| 123 } | |
| 124 } | |
| 125 int indexOf (int lineIndex) { | |
| 126 for (int i = 0; i < count; i++) { | |
| 127 if (linesIndices[i] is lineIndex) return i; | |
| 128 } | |
| 129 return -1; | |
| 130 } | |
| 131 public override hash_t toHash() { | |
| 132 return style.toHash() ^ type; | |
| 133 } | |
| 134 int[] removeIndices (int startLine, int replaceLineCount, int newLineCount, bool update) { | |
| 135 if (count is 0) return null; | |
| 136 if (startLine > linesIndices[count - 1]) return null; | |
| 137 int endLine = startLine + replaceLineCount; | |
| 138 int delta = newLineCount - replaceLineCount; | |
| 139 for (int i = 0; i < count; i++) { | |
| 140 int index = linesIndices[i]; | |
| 141 if (startLine <= index) { | |
| 142 int j = i; | |
| 143 while (j < count) { | |
| 144 if (linesIndices[j] >= endLine) break; | |
| 145 j++; | |
| 146 } | |
| 147 if (update) { | |
| 148 for (int k = j; k < count; k++) linesIndices[k] += delta; | |
| 149 } | |
| 150 int[] redrawLines = new int[count - j]; | |
| 151 System.arraycopy(linesIndices, j, redrawLines, 0, count - j); | |
| 152 System.arraycopy(linesIndices, j, linesIndices, i, count - j); | |
| 153 count -= (j - i); | |
| 154 return redrawLines; | |
| 155 } | |
| 156 } | |
| 157 for (int i = 0; i < count; i++) linesIndices[i] += delta; | |
| 158 return null; | |
| 159 } | |
| 160 int size() { | |
| 161 return count; | |
| 162 } | |
| 163 } |