Pattern.java

/*******************************************************************************
 * Copyright (c) 2000, 2008 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
 *******************************************************************************/
package org.eclipse.swt.graphics;

import org.eclipse.swt.*;

public class Pattern extends Resource {
	Image image;
	float x1, y1, x2, y2;
	int alpha1, alpha2;
	Color color1, color2;

public Pattern (Device device, Image image) {
	super(device);
	if (image == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	if (image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	this.image = image;
}

public Pattern (Device device, float x1, float y1, float x2, float y2, Color color1, Color color2) {
	this(device, x1, y1, x2, y2, color1, 0xFF, color2, 0xFF);
}

public Pattern (Device device, float x1, float y1, float x2, float y2, Color color1, int alpha1, Color color2, int alpha2) {
	super(device);
	if (color1 == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	if (color1.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	if (color2 == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
	if (color2.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
	this.x1 = x1;
	this.y1 = y1;
	this.x2 = x2;
	this.y2 = y2;
	this.alpha1 = alpha1;
	this.color1 = color1;
	this.alpha2 = alpha2;
	this.color2 = color2;
}

void destroy () {
	image = null;
}

public boolean isDisposed () {
	return device == null;
}

public String toString () {
	if (isDisposed()) return "Pattern {*DISPOSED*}";
	return "Pattern {" + "}";
}

}