Performance and resource consumption optimization for G2D picking

[simantics/platform.git] / bundles / org.simantics.g2d / src / org / simantics / g2d / diagram / DiagramHints.java

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/diagram/DiagramHints.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/diagram/DiagramHints.java
index 367cebcce67fb91caba55ad502c9c1050e75508e..aded9d170a2ccc9238b9e72f96e62c79f89fd3ef 100644 (file)
--- a/bundles/org.simantics.g2d/src/org/simantics/g2d/diagram/DiagramHints.java
+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/diagram/DiagramHints.java
@@ -20,9 +20,13 @@ import java.util.Map;
 import org.simantics.g2d.canvas.ICanvasContext;
 import org.simantics.g2d.canvas.ICanvasParticipant;
 import org.simantics.g2d.connection.IConnectionAdvisor;
+import org.simantics.g2d.diagram.handler.impl.PickContextImpl;
+import org.simantics.g2d.diagram.participant.ElementPainter;
+import org.simantics.g2d.element.IElement;
 import org.simantics.g2d.layers.ILayers;
 import org.simantics.g2d.layers.ILayersEditor;
 import org.simantics.g2d.routing.IRouter2;
+import org.simantics.scenegraph.INode;
 import org.simantics.scenegraph.g2d.snap.ISnapAdvisor;
 import org.simantics.utils.datastructures.hints.IHintContext.Key;
 import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;
@@ -186,4 +190,14 @@ public class DiagramHints {
      */
     public static final Key SELECTION_PADDING_SCALE_FACTOR = new KeyOf(Double.class, "SELECTION_PADDING_SCALE_FACTOR");
 
+    /**
+     * An optional cache map that maps scene graph {@link INode}s to
+     * {@link IElement}s to speed up IElement lookups based on SG nodes.
+     * 
+     * @since 1.36.0
+     * @see PickContextImpl
+     * @see ElementPainter
+     */
+    public static final Key NODE_TO_ELEMENT_MAP = new KeyOf(Map.class, "NODE_TO_ELEMENT_MAP");
+
 }