Mercurial > projects > dwt-mac
view dwt/custom/Bullet.d @ 13:f565d3a95c0a
Ported dwt.internal
author | Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> |
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date | Fri, 22 Aug 2008 16:46:34 +0200 |
parents | 380af2bdd8e5 |
children | 6337764516f1 |
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/******************************************************************************* * Copyright (c) 2000, 2006 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation * * Port to the D programming language: * Jacob Carlborg <jacob.carlborg@gmail.com> *******************************************************************************/ module dwt.custom.Bullet; import dwt.DWT; import dwt.custom.StyleRange; import dwt.dwthelper.string; import dwt.dwthelper.System; /** * Instances of this class represent bullets in the <code>StyledText</code>. * <p> * The toHash() method in this class uses the values of the public * fields to compute the hash value. When storing instances of the * class in hashed collections, do not modify these fields after the * object has been inserted. * </p> * <p> * Application code does <em>not</em> need to explicitly release the * resources managed by each instance when those instances are no longer * required, and thus no <code>dispose()</code> method is provided. * </p> * * @see StyledText#setLineBullet(int, int, Bullet) * * @since 3.2 */ public class Bullet { public int type; public StyleRange style; public String text; int[] linesIndices; int count; /** * Create a new bullet the specified style, the type is set to ST.BULLET_DOT. * The style must have a glyph metrics set. * * @param style the style * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT when the style or the glyph metrics are null</li> * </ul> */ public this (StyleRange style) { this(DWT.BULLET_DOT, style); } /** * Create a new bullet the specified style and type. * The style must have a glyph metrics set. * * @param style the style * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT when the style or the glyph metrics are null</li> * </ul> */ public this (int type, StyleRange style) { if (style is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); if (style.metrics is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); this.type = type; this.style = style; } void addIndices (int startLine, int lineCount) { if (linesIndices is null) { linesIndices = new int[lineCount]; count = lineCount; for (int i = 0; i < lineCount; i++) linesIndices[i] = startLine + i; } else { int modifyStart = 0; while (modifyStart < count) { if (startLine <= linesIndices[modifyStart]) break; modifyStart++; } int modifyEnd = modifyStart; while (modifyEnd < count) { if (startLine + lineCount <= linesIndices[modifyEnd]) break; modifyEnd++; } int newSize = modifyStart + lineCount + count - modifyEnd; if (newSize > linesIndices.length) { int[] newLinesIndices = new int[newSize]; System.arraycopy(linesIndices, 0, newLinesIndices, 0, count); linesIndices = newLinesIndices; } System.arraycopy(linesIndices, modifyEnd, linesIndices, modifyStart + lineCount, count - modifyEnd); for (int i = 0; i < lineCount; i++) linesIndices[modifyStart + i] = startLine + i; count = newSize; } } int indexOf (int lineIndex) { for (int i = 0; i < count; i++) { if (linesIndices[i] is lineIndex) return i; } return -1; } public hash_t toHash () { return style.toHash() ^ type; } int[] removeIndices (int startLine, int replaceLineCount, int newLineCount, bool update) { if (count is 0) return null; if (startLine > linesIndices[count - 1]) return null; int endLine = startLine + replaceLineCount; int delta = newLineCount - replaceLineCount; for (int i = 0; i < count; i++) { int index = linesIndices[i]; if (startLine <= index) { int j = i; while (j < count) { if (linesIndices[j] >= endLine) break; j++; } if (update) { for (int k = j; k < count; k++) linesIndices[k] += delta; } int[] redrawLines = new int[count - j]; System.arraycopy(linesIndices, j, redrawLines, 0, count - j); System.arraycopy(linesIndices, j, linesIndices, i, count - j); count -= (j - i); return redrawLines; } } for (int i = 0; i < count; i++) linesIndices[i] += delta; return null; } int size () { return count; } }