Mercurial > projects > dwt-linux
changeset 22:b5521a2c27c2
TextStyle
author | Frank Benoit <benoit@tionex.de> |
---|---|
date | Mon, 07 Jan 2008 09:25:10 +0100 |
parents | 4f9c0fea3440 |
children | 3c2d10c00f61 |
files | dwt/graphics/Color.d dwt/graphics/TextStyle.d todo.txt |
diffstat | 3 files changed, 204 insertions(+), 3 deletions(-) [+] |
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line diff
--- a/dwt/graphics/Color.d Mon Jan 07 09:11:15 2008 +0100 +++ b/dwt/graphics/Color.d Mon Jan 07 09:25:10 2008 +0100 @@ -144,7 +144,7 @@ * * @see #hashCode */ -public int opEquals(Object object) { +public override int opEquals(Object object) { if (object is this) return true; if ( auto color = cast(Color)object ){ GdkColor* gdkColor = color.handle; @@ -207,7 +207,7 @@ * * @see #equals */ -public int hashCode() { +public override hash_t toHash() { if (isDisposed()) return 0; return handle.red ^ handle.green ^ handle.blue; }
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/dwt/graphics/TextStyle.d Mon Jan 07 09:25:10 2008 +0100 @@ -0,0 +1,201 @@ +/******************************************************************************* + * 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 + *******************************************************************************/ +module dwt.graphics.TextStyle; + +import dwt.SWT; +import dwt.graphics.Font; +import dwt.graphics.Color; +import dwt.graphics.GlyphMetrics; + +import tango.util.Convert; +/** + * <code>TextStyle</code> defines a set of styles that can be applied + * to a range of text. + * <p> + * The hashCode() 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 TextLayout + * @see Font + * @see Color + * + * @since 3.0 + */ +public class TextStyle { + + /** + * the font of the style + */ + public Font font; + + /** + * the foreground of the style + */ + public Color foreground; + + /** + * the background of the style + */ + public Color background; + + /** + * the underline flag of the style + * + * @since 3.1 + */ + public bool underline; + + /** + * the strikeout flag of the style + * + * @since 3.1 + */ + public bool strikeout; + + /** + * the GlyphMetrics of the style + * + * @since 3.2 + */ + public GlyphMetrics metrics; + + /** + * the baseline rise of the style. + * + * @since 3.2 + */ + public int rise; + +/** + * Create a new text style with the specified font, foreground + * and background. + * + * @param font the font of the style, <code>null</code> if none + * @param foreground the foreground color of the style, <code>null</code> if none + * @param background the background color of the style, <code>null</code> if none + */ +public this (Font font, Color foreground, Color background) { + if (font !is null && font.isDisposed()) SWT.error (SWT.ERROR_INVALID_ARGUMENT); + if (foreground !is null && foreground.isDisposed()) SWT.error (SWT.ERROR_INVALID_ARGUMENT); + if (background !is null && background.isDisposed()) SWT.error (SWT.ERROR_INVALID_ARGUMENT); + this.font = font; + this.foreground = foreground; + this.background = background; +} + +/** + * Compares the argument to the receiver, and returns true + * if they represent the <em>same</em> object using a class + * specific comparison. + * + * @param object the object to compare with this object + * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise + * + * @see #hashCode() + */ +public override int opEquals(Object object) { + if (object is this) return true; + if (object is null) return false; + if (!(cast(TextStyle)object)) return false; + TextStyle style = cast(TextStyle)object; + if (foreground !is null) { + if ( foreground != style.foreground ) return false; + } else if (style.foreground !is null) return false; + if (background !is null) { + if ( background != style.background ) return false; + } else if (style.background !is null) return false; + if (font !is null) { + if (font != style.font) return false; + } else if (style.font != null) return false; + if (metrics != null || style.metrics !is null) return false; + if (underline !is style.underline) return false; + if (strikeout !is style.strikeout) return false; + if (rise !is style.rise) return false; + return true; +} + +/** + * Returns an integer hash code for the receiver. Any two + * objects that return <code>true</code> when passed to + * <code>equals</code> must return the same value for this + * method. + * + * @return the receiver's hash + * + * @see #equals(Object) + */ +public override hash_t toHash() { + int hash = 0; + if (foreground !is null) hash ^= foreground.toHash(); + if (background !is null) hash ^= background.toHash(); + if (font !is null) hash ^= font.toHash(); + if (metrics !is null) hash ^= metrics.toHash(); + if (underline) hash ^= hash; + if (strikeout) hash ^= hash; + hash ^= rise; + return hash; +} + +/** + * Returns a string containing a concise, human-readable + * description of the receiver. + * + * @return a string representation of the <code>TextStyle</code> + */ +public char[] toString () { + char[] buffer = "TextStyle {"; + int startLength = buffer.length; + if (font != null) { + if (buffer.length > startLength) buffer ~= ", "; + buffer ~= "font="; + buffer ~= font.toString; + } + if (foreground != null) { + if (buffer.length > startLength) buffer ~= ", "; + buffer ~= "foreground="; + buffer ~= foreground.toString; + } + if (background != null) { + if (buffer.length > startLength) buffer ~= ", "; + buffer ~= "background="; + buffer ~= background.toString; + } + if (underline) { + if (buffer.length > startLength) buffer ~= ", "; + buffer ~= "underlined"; + } + if (strikeout) { + if (buffer.length > startLength) buffer ~= ", "; + buffer ~= "striked out"; + } + if (rise != 0) { + if (buffer.length > startLength) buffer ~= ", "; + buffer ~= "rise="; + buffer ~= to!(char[])(rise); + } + if (metrics != null) { + if (buffer.length > startLength) buffer ~= ", "; + buffer ~= "metrics="; + buffer ~= metrics.toString; + } + buffer ~= "}"; + return buffer; +} + +}