Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.diagram / src / org / simantics / diagram / synchronization / graph / TranslateElement.java

diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/synchronization/graph/TranslateElement.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/synchronization/graph/TranslateElement.java
new file mode 100644 (file)
index 0000000..39401ef
--- /dev/null
+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/synchronization/graph/TranslateElement.java
@@ -0,0 +1,107 @@
+/*******************************************************************************\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.diagram.synchronization.graph;\r
+\r
+import java.awt.geom.AffineTransform;\r
+import java.awt.geom.Point2D;\r
+\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.common.CommentMetadata;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.diagram.synchronization.ModificationAdapter;\r
+import org.simantics.g2d.element.ElementHints;\r
+import org.simantics.g2d.element.IElement;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class TranslateElement extends ModificationAdapter {\r
+\r
+    Resource element;\r
+    Point2D  absolutePosition;\r
+    Point2D  offset;\r
+\r
+    public static TranslateElement absolute(Resource element, double x, double y) {\r
+        return new TranslateElement(element, new Point2D.Double(x, y), null);\r
+    }\r
+\r
+    public static TranslateElement absolute(Resource element, Point2D absolutePosition) {\r
+        return new TranslateElement(element, absolutePosition, null);\r
+    }\r
+\r
+    public static TranslateElement offset(Resource element, double x, double y) {\r
+        return new TranslateElement(element, null, new Point2D.Double(x, y));\r
+    }\r
+\r
+    public static TranslateElement offset(Resource element, Point2D offset) {\r
+        return new TranslateElement(element, null, offset);\r
+    }\r
+\r
+    /**\r
+     * @param element the element to translate, must contain a {@link Resource}\r
+     *        type {@link ElementHints#KEY_OBJECT} hint\r
+     * @param absolutePosition <code>null</code> to not define an absolute\r
+     *        position to set, otherwise this position will override the\r
+     *        original translation of the element\r
+     * @param offset an offset to apply to the element's position. If\r
+     *        {@link #absolutePosition} is null, only an offset will be applied\r
+     */\r
+    public TranslateElement(IElement element, Point2D absolutePosition, Point2D offset) {\r
+        this((Resource) element.getHint(ElementHints.KEY_OBJECT), absolutePosition, offset);\r
+    }\r
+\r
+    /**\r
+     * @param element the element to translate\r
+     * @param absolutePosition <code>null</code> to not define an absolute\r
+     *        position to set, otherwise this position will override the\r
+     *        original translation of the element\r
+     * @param offset an offset to apply to the element's position. If\r
+     *        {@link #absolutePosition} is null, only an offset will be applied\r
+     */\r
+    public TranslateElement(Resource element, Point2D absolutePosition, Point2D offset) {\r
+        super(LOW_PRIORITY);\r
+        this.element = element;\r
+        this.absolutePosition = absolutePosition;\r
+        this.offset = offset;\r
+    }\r
+\r
+    @Override\r
+    public void perform(WriteGraph graph) throws DatabaseException {\r
+        if (absolutePosition == null && offset == null)\r
+            return;\r
+\r
+        AffineTransform at = DiagramGraphUtil.getTransform(graph, element);\r
+\r
+        double x = at.getTranslateX();\r
+        double y = at.getTranslateY();\r
+        if (absolutePosition != null) {\r
+            x = absolutePosition.getX();\r
+            y = absolutePosition.getY();\r
+        }\r
+        if (offset != null) {\r
+            x += offset.getX();\r
+            y += offset.getY();\r
+        }\r
+\r
+        boolean changed = !(x == at.getTranslateX() && y == at.getTranslateY());\r
+        if (!changed)\r
+            return;\r
+\r
+        at.setTransform(at.getScaleX(), at.getShearX(), at.getShearY(), at.getScaleY(), x, y);\r
+\r
+        DiagramGraphUtil.setTransform(graph, element, at);\r
+        CommentMetadata cm = graph.getMetadata(CommentMetadata.class);\r
+        graph.addMetadata(cm.add("Translated " + element));\r
+    }\r
+\r
+}\r