X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.g2d%2Fsrc%2Forg%2Fsimantics%2Fg2d%2Fparticipant%2FCanvasGrab.java;fp=bundles%2Forg.simantics.g2d%2Fsrc%2Forg%2Fsimantics%2Fg2d%2Fparticipant%2FCanvasGrab.java;h=7ca15a8a61ed0775fb35dae4bf3664e5f52cc1c1;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/participant/CanvasGrab.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/participant/CanvasGrab.java
new file mode 100644
index 000000000..7ca15a8a6
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+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/participant/CanvasGrab.java
@@ -0,0 +1,63 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.g2d.participant;
+
+import java.awt.geom.Point2D;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.simantics.g2d.canvas.impl.AbstractCanvasParticipant;
+import org.simantics.g2d.canvas.impl.DependencyReflection.Dependency;
+
+/**
+ * Participant that enables grabbing of canvas.
+ * 
+ * @See {@link HandPainter} Paints grabbing of canvas
+ * @author Toni Kalajainen
+ */
+public class CanvasGrab extends AbstractCanvasParticipant {
+
+	@Dependency TransformUtil util;
+	
+    public Map<Integer, PointerInfo> grabInfo = new HashMap<Integer, PointerInfo>();
+    
+    public PointerInfo grabCanvas(int id, Point2D pos)
+    {    	
+    	PointerInfo result = new PointerInfo(pos, id);
+        result.currentPos = pos;        
+        grabInfo.put(id, result);        
+    	return result;
+    }
+    
+    public void releaseCanvas(int id)
+    {
+    	grabInfo.remove(id);
+    }
+	
+    /** Info of pointers with left button down */
+    public static final class PointerInfo {
+        public final int mouseId;
+        // Anchoring position in control coordinates 
+        public Point2D anchorPos;
+        public Point2D currentPos;
+        public PointerInfo(Point2D anchorPos, int mouseId) {
+            this.anchorPos = anchorPos;
+            this.mouseId = mouseId;
+        }       
+    }
+    
+    public Map<Integer, PointerInfo> getGrabInfo()
+    {
+    	return grabInfo;
+    }
+	
+}