Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.g2d / src / org / simantics / g2d / element / handler / Scale.java

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/Scale.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/Scale.java
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+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/Scale.java
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+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.g2d.element.handler;\r
+\r
+import java.awt.geom.Point2D;\r
+\r
+import org.simantics.g2d.element.IElement;\r
+import org.simantics.g2d.element.ElementClass.Single;\r
+import org.simantics.g2d.element.handler.impl.DefaultTransform;\r
+import org.simantics.g2d.element.handler.impl.Scaleable;\r
+\r
+/**\r
+ * Interface that tags that the element is scalable. Scaling modifies the \r
+ * transform of the element (on canvas), where as resizeing modifies the internal\r
+ * size of the element.\r
+ * \r
+ * @see DefaultTransform default impl\r
+ * @see Scaleable default impl\r
+ * @author Toni Kalajainen\r
+ */\r
+@Single\r
+public interface Scale extends ElementHandler {\r
+\r
+       /**\r
+        * Get scale of the element\r
+        * @param e\r
+        * @return\r
+        */\r
+       Point2D getScale(IElement e);\r
+       \r
+       /**\r
+        * Set scale of the element\r
+        * @param e\r
+        * @param newScale\r
+        */\r
+       void setScale(IElement e, Point2D newScale);\r
+       \r
+       /**\r
+        * Returns fixed width/height ratio of dimensions if there is one\r
+        *  \r
+        * @return aspect ratio or null \r
+        */\r
+       Double getFixedAspectRatio(IElement e);\r
+       \r
+       /**\r
+        * Return minimum scale if there is one \r
+        * @return minimum scale or null\r
+        */\r
+       Point2D getMinimumScale(IElement e);\r
+       \r
+       /**\r
+        * return maximum scale if one exists\r
+        * @return max scale or null\r
+        */\r
+       Point2D getMaximumScale(IElement e);\r
+       \r
+}
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