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