| /******************************************************************************* |
| * 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.*; |
| |
| public class FigureDrawContext { |
| /* |
| * <p> |
| * The GC must be set up as follows |
| * (it will be returned to this state upon completion of drawing operations) |
| * <ul> |
| * <li>setXORMode(false) |
| * </ul> |
| * </p> |
| */ |
| public GC gc = null; |
| public int xOffset = 0, yOffset = 0; // substract to get GC coords |
| public int xScale = 1, yScale = 1; |
| |
| public Rectangle toClientRectangle(int x1, int y1, int x2, int y2) { |
| return new Rectangle( |
| Math.min(x1, x2) * xScale - xOffset, |
| Math.min(y1, y2) * yScale - yOffset, |
| (Math.abs(x2 - x1) + 1) * xScale, |
| (Math.abs(y2 - y1) + 1) * yScale); |
| } |
| public Point toClientPoint(int x, int y) { |
| return new Point(x * xScale - xOffset, y * yScale - yOffset); |
| } |
| } |