GraphicsSource.java

/*******************************************************************************
 * Copyright (c) 2000, 2005 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.draw2d;

import org.eclipse.draw2d.geometry.Rectangle;

/**
 * Provides a {@link org.eclipse.draw2d.Graphics} object for painting.
 */
public interface GraphicsSource {

/**
 * Returns a Graphics for the rectangular region requested. May return <code>null</code>.
 * @param region The rectangular region
 * @return A new Graphics object for the given region
 */
Graphics getGraphics(Rectangle region);

/**
 * Tells the GraphicsSource that you have finished using that region.
 * @param region The rectangular region that that no longer needs the Graphics
 */
void flushGraphics(Rectangle region);

}