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;
14 import java.awt.geom.Point2D;
16 import org.simantics.g2d.element.IElement;
17 import org.simantics.g2d.element.ElementClass.Single;
18 import org.simantics.g2d.element.handler.impl.DefaultTransform;
19 import org.simantics.g2d.element.handler.impl.Scaleable;
22 * Interface that tags that the element is scalable. Scaling modifies the
23 * transform of the element (on canvas), where as resizeing modifies the internal
24 * size of the element.
26 * @see DefaultTransform default impl
27 * @see Scaleable default impl
28 * @author Toni Kalajainen
31 public interface Scale extends ElementHandler {
34 * Get scale of the element
38 Point2D getScale(IElement e);
41 * Set scale of the element
45 void setScale(IElement e, Point2D newScale);
48 * Returns fixed width/height ratio of dimensions if there is one
50 * @return aspect ratio or null
52 Double getFixedAspectRatio(IElement e);
55 * Return minimum scale if there is one
56 * @return minimum scale or null
58 Point2D getMinimumScale(IElement e);
61 * return maximum scale if one exists
62 * @return max scale or null
64 Point2D getMaximumScale(IElement e);