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/*******************************************************************************
* Copyright (c) 2000, 2003 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.graphics;
import org.eclipse.swt.*;
/**
* <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;
/**
* 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 TextStyle (Font font, Color foreground, Color background) {
if (font != null && font.isDisposed()) SWT.error (SWT.ERROR_INVALID_ARGUMENT);
if (foreground != null && foreground.isDisposed()) SWT.error (SWT.ERROR_INVALID_ARGUMENT);
if (background != null && background.isDisposed()) SWT.error (SWT.ERROR_INVALID_ARGUMENT);
this.font = font;
this.foreground = foreground;
this.background = background;
}
public boolean equals(Object object) {
if (object == this) return true;
if (object == null) return false;
if (!(object instanceof TextStyle)) return false;
TextStyle style = (TextStyle)object;
if (this.foreground != null) {
if (!this.foreground.equals(style.foreground)) return false;
} else if (style.foreground != null) return false;
if (this.background != null) {
if (!this.background.equals(style.background)) return false;
} else if (style.background != null) return false;
if (this.font != null) {
if (!this.font.equals(style.font)) return false;
} else if (style.font != null) return false;
return true;
}
public int hashCode() {
int hash = super.hashCode();
if (font != null) hash ^= font.hashCode();
if (foreground != null) hash ^= foreground.hashCode();
if (background != null) hash ^= background.hashCode();
return hash;
}
}
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