Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.scenegraph / src / org / simantics / scenegraph / g2d / events / MouseEventCoalescer.java

diff --git a/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/events/MouseEventCoalescer.java b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/events/MouseEventCoalescer.java
new file mode 100644 (file)
index 0000000..c471c62
--- /dev/null
+++ b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/events/MouseEventCoalescer.java
@@ -0,0 +1,36 @@
+/*******************************************************************************\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.scenegraph.g2d.events;\r
+\r
+import org.simantics.scenegraph.g2d.events.IEventQueue.EventCoalescer;\r
+import org.simantics.scenegraph.g2d.events.MouseEvent.MouseMovedEvent;\r
+\r
+/**\r
+ * Coalescales mouse events\r
+ * \r
+ * @author Toni Kalajainen\r
+ */\r
+public class MouseEventCoalescer implements EventCoalescer {\r
+\r
+    public static final MouseEventCoalescer INSTANCE = new MouseEventCoalescer();\r
+\r
+    @Override\r
+    public Event coalesce(Event apriori, Event aposterior) {\r
+        if (!(apriori instanceof MouseMovedEvent)) return null;\r
+        if (!(aposterior instanceof MouseMovedEvent)) return null;\r
+        MouseMovedEvent m1 = (MouseMovedEvent) apriori;\r
+        MouseMovedEvent m2 = (MouseMovedEvent) aposterior;\r
+        if (m1.mouseId!=m2.mouseId) return null;\r
+        return aposterior;\r
+    }\r
+\r
+}\r