| /******************************************************************************* |
| * 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.swt.examples.paint; |
| |
| |
| import org.eclipse.swt.graphics.*; |
| |
| /** |
| * Superinterface for all drawing objects. |
| * All drawing objects know how to render themselved to the screen and can draw a |
| * temporary version of themselves for previewing the general appearance of the |
| * object onscreen before it gets committed. |
| */ |
| public abstract class Figure { |
| /** |
| * Draws this object. |
| * |
| * @param fdc a parameter block specifying drawing-related information |
| */ |
| public abstract void draw(FigureDrawContext fdc); |
| |
| /** |
| * Computes the damaged screen region caused by drawing this object (imprecise), then |
| * appends it to the supplied region. |
| * |
| * @param fdc a parameter block specifying drawing-related information |
| * @param region a region to which additional damage areas will be added |
| */ |
| public abstract void addDamagedRegion(FigureDrawContext fdc, Region region); |
| } |