X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.scenegraph%2Fsrc%2Forg%2Fsimantics%2Fscenegraph%2Fg2d%2Fnodes%2FSingleElementNode.java;h=c6a8b950e0e8a6f22218bb70d0637fc2c45360cd;hp=dc40036a7ff794c19dc0a62a34c1cebef715334b;hb=bf75fd9740858140eac90c18f0bca0aea3893248;hpb=21f879fcd72d7749836fb64375094ef29573fe8c

diff --git a/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/nodes/SingleElementNode.java b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/nodes/SingleElementNode.java
index dc40036a7..c6a8b950e 100644
--- a/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/nodes/SingleElementNode.java
+++ b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/nodes/SingleElementNode.java
@@ -14,20 +14,35 @@ package org.simantics.scenegraph.g2d.nodes;
 import java.awt.AlphaComposite;
 import java.awt.Composite;
 import java.awt.Graphics2D;
+import java.awt.geom.Point2D;
+import java.awt.geom.Rectangle2D;
 
 import org.simantics.scenegraph.g2d.IG2DNode;
+import org.simantics.scenegraph.g2d.events.EventTypes;
+import org.simantics.scenegraph.g2d.events.MouseEvent;
+import org.simantics.scenegraph.g2d.events.MouseEvent.MouseDragBegin;
 import org.simantics.scenegraph.utils.InitValueSupport;
+import org.simantics.scenegraph.utils.NodeUtil;
 
 public class SingleElementNode extends TransformNode implements InitValueSupport {
-    /**
-     * 
-     */
+
     private static final long serialVersionUID = -4982578347433716440L;
 
+    private TransferableProvider transferableProvider;
     protected Composite composite;
     protected Boolean visible = Boolean.TRUE;
     protected Boolean hidden = Boolean.FALSE;
 
+    public void setTransferableProvider(TransferableProvider transferableProvider) {
+        if (transferableProvider != this.transferableProvider) {
+            if (this.transferableProvider != null)
+                removeEventHandler(this);
+            if (transferableProvider != null)
+                addEventHandler(this);
+            this.transferableProvider = transferableProvider;
+        }
+    }
+
     @Override
     public boolean validate() {
         return visible && !hidden;
@@ -97,34 +112,6 @@ public class SingleElementNode extends TransformNode implements InitValueSupport
         return sb.toString();
     }
 
-//    private INode findChild(String key) {
-//
-//    	INode result = getNode(key);
-//    	if(result != null) return result;
-//
-//    	for(Map.Entry<String, IG2DNode> entry : children.entrySet()) {
-//
-//    		if(!(entry.getValue() instanceof SingleElementNode)) {
-//    			if(entry.getKey().startsWith(key)) return entry.getValue();
-//    		}
-//
-//    	}
-//
-//    	for(IG2DNode node : getNodes()) {
-//
-//    		if(node instanceof SingleElementNode) {
-//
-//    			result = ((SingleElementNode)node).findChild(key);
-//    			if(result != null) return result;
-//
-//    		}
-//
-//    	}
-//
-//    	return null;
-//
-//    }
-
     protected Composite alphaComposite = null;
 
     @PropertySetter("alpha")
@@ -133,26 +120,6 @@ public class SingleElementNode extends TransformNode implements InitValueSupport
         this.alphaComposite = alphaComposite;
     }
 
-//    public void setValue(String key, Object value) {
-//
-//        if ("alpha".equals(key)) {
-//        	Float val = Float.parseFloat((String)value);
-//        	alphaComposite = AlphaComposite.getInstance(AlphaComposite. SRC_OVER, val);
-//        } else {
-//
-//        	String[] parts = key.split("\\.");
-//        	if(parts.length != 2) return;
-//
-//        	INode child = findChild(parts[0]);
-//
-//        	if(child == null) return;
-//
-////        	child.setValue(parts[1], value);
-//
-//        }
-//
-//    }
-
     @Override
     public void initValues() {
         alphaComposite = null;
@@ -163,4 +130,43 @@ public class SingleElementNode extends TransformNode implements InitValueSupport
         }
     }
 
+    @Override
+    public void cleanup() {
+        if (transferableProvider != null) {
+            removeEventHandler(this);
+            transferableProvider = null;
+        }
+        super.cleanup();
+    }
+
+    protected boolean isDragStartEvent(MouseEvent e) {
+        return e.isControlDown();
+    }
+
+    protected boolean hitTest(MouseEvent event) {
+        Rectangle2D bounds = super.getBoundsInLocal(false);
+        if (bounds == null)
+            return false;
+        Point2D localPos = NodeUtil.worldToLocal(this, event.controlPosition, new Point2D.Double());
+        double x = localPos.getX();
+        double y = localPos.getY();
+        boolean hit = bounds.contains(x, y);
+        return hit;
+    }
+
+    @Override
+    protected boolean mouseDragged(MouseDragBegin e) {
+        if (transferableProvider == null
+                || !isDragStartEvent(e)
+                || !hitTest(e))
+            return false;
+        e.transferable = transferableProvider.create();
+        return e.transferable != null;
+    }
+
+    @Override
+    public int getEventMask() {
+        return EventTypes.MouseDragBeginMask;
+    }
+
 }