Mercurial > projects > dwt-mac
diff dwt/custom/Bullet.d @ 0:380af2bdd8e5
Upload of whole dwt tree
author | Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> |
---|---|
date | Sat, 09 Aug 2008 17:00:02 +0200 |
parents | |
children | f565d3a95c0a |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/dwt/custom/Bullet.d Sat Aug 09 17:00:02 2008 +0200 @@ -0,0 +1,160 @@ +/******************************************************************************* + * 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; + } +}