org.simantics.district.network/src/org/simantics/district/network/profile/ArrowLengthStyle.java

   1 package org.simantics.district.network.profile;
   2
   3 import org.simantics.Simantics;
   4 import org.simantics.db.ReadGraph;
   5 import org.simantics.db.Resource;
   6 import org.simantics.db.common.procedure.adapter.TransientCacheAsyncListener;
   7 import org.simantics.db.exception.DatabaseException;
   8 import org.simantics.scenegraph.INode;
   9 import org.simantics.scenegraph.g2d.G2DSceneGraph;
  10 import org.simantics.scenegraph.g2d.nodes.ConnectionNode;
  11 import org.simantics.scenegraph.profile.EvaluationContext;
  12 import org.simantics.scenegraph.profile.common.ProfileVariables;
  13
  14 public class ArrowLengthStyle extends ThrottledStyleBase<Double> {
  15
  16         private static final Double PENDING = Double.NaN;
  17         private static final Double ONE = 1.0;
  18
  19         @Override
  20         public Double calculateThrottledStyle(ReadGraph graph, Resource runtimeDiagram, Resource entry, Resource groupItem) throws DatabaseException {
  21                 DiagramSettings ds = graph.syncRequest(new DiagramSettingsRequest(runtimeDiagram), TransientCacheAsyncListener.instance());
  22                 // Prevent PendingVariableExceptions from coming through
  23                 boolean wasSynchronous = graph.setSynchronous(true);
  24                 try {
  25                         Double length = ONE;
  26                         if (ds.arrowLengthProperty.isPresent()) {
  27                                 length = Simantics.applySCLRead(graph, ds.arrowLengthProperty.get(), groupItem);
  28         //                      System.out.println("read thickness: " + thickness + " : " + ds.arrowLengthProperty);
  29                                 if (length == null) {
  30                                         length = ONE;
  31                                 } else {
  32                                         length = length * ds.arrowLengthGain + ds.arrowLengthBias;
  33                                 }
  34                         }
  35
  36                         return length;
  37                 }
  38                 finally {
  39                         graph.setSynchronous(wasSynchronous);
  40                 }
  41         }
  42
  43         @Override
  44         public void applyThrottledStyleForNode(EvaluationContext observer, INode node, Double value) {
  45 //              System.out.println("apply: " + node + " : " + value);
  46                 ConnectionNode n = (ConnectionNode) node;
  47                 if (value == PENDING) {
  48                         ((G2DSceneGraph)node.getRootNode()).setPending(node);
  49                 } else {
  50                         ((G2DSceneGraph)node.getRootNode()).clearPending(node);
  51                 }
  52                 for (INode nn : n.getNodes())
  53                         ProfileVariables.claimNodeProperty(nn, "arrowLength", value, observer);
  54         }
  55
  56         @Override
  57         protected void cleanupStyleForNode(EvaluationContext evaluationContext, INode node) {
  58                 ((G2DSceneGraph)node.getRootNode()).clearPending(node);
  59                 ConnectionNode n = (ConnectionNode) node;
  60                 for (INode nn : n.getNodes())
  61                         ProfileVariables.claimNodeProperty(nn, "arrowLength", null, evaluationContext);
  62         }
  63
  64 }