1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.g2d.element.handler.impl;
14 import java.awt.geom.AffineTransform;
16 import org.simantics.g2d.element.ElementHints;
17 import org.simantics.g2d.element.IElement;
18 import org.simantics.g2d.element.handler.ParentTransform;
19 import org.simantics.g2d.element.handler.Transform;
22 * This class implements Transform, Move, Rotate, and Scale.
23 * It maintains element position in element variable ElementHints.KEY_TRANSFORM.
25 * @author Toni Kalajainen
27 public class ElementParentTransform implements ParentTransform {
29 public static final ElementParentTransform INSTANCE = new ElementParentTransform();
31 private static final long serialVersionUID = 2381541967701117513L;
34 public AffineTransform getTransform(IElement e) {
36 IElement parentElement = e.getHint(ElementHints.KEY_PARENT_ELEMENT);
37 if(parentElement == null) return null;
39 Transform parentTransform = parentElement.getElementClass().getSingleItem(Transform.class);
40 assert(parentTransform!=null);
42 AffineTransform result = parentTransform.getTransform(parentElement);
47 public void setParent(IElement e, IElement parent) {
48 e.setHint(ElementHints.KEY_PARENT_ELEMENT, parent);