org.simantics.district.network.ui/src/org/simantics/district/network/ui/nodes/ConnectionLineStyle.java

   1 package org.simantics.district.network.ui.nodes;
   2
   3 import java.awt.BasicStroke;
   4 import java.awt.Color;
   5 import java.awt.Graphics2D;
   6 import java.awt.geom.Line2D;
   7 import java.awt.geom.Point2D;
   8 import java.awt.geom.Rectangle2D;
   9 import java.util.ArrayList;
  10 import java.util.Collections;
  11 import java.util.List;
  12
  13 import org.simantics.Simantics;
  14 import org.simantics.db.ReadGraph;
  15 import org.simantics.db.Resource;
  16 import org.simantics.db.common.procedure.adapter.TransientCacheListener;
  17 import org.simantics.db.common.request.ResourceRead;
  18 import org.simantics.db.exception.DatabaseException;
  19 import org.simantics.db.layer0.util.Layer0Utils;
  20 import org.simantics.diagram.profile.StyleBase;
  21 import org.simantics.diagram.stubs.DiagramResource;
  22 import org.simantics.district.network.DistrictNetworkUtil;
  23 import org.simantics.district.network.ontology.DistrictNetworkResource;
  24 import org.simantics.layer0.Layer0;
  25 import org.simantics.modeling.ModelingResources;
  26 import org.simantics.scenegraph.INode;
  27 import org.simantics.scenegraph.g2d.G2DNode;
  28 import org.simantics.scenegraph.profile.EvaluationContext;
  29 import org.simantics.scenegraph.profile.common.ProfileVariables;
  30 import org.simantics.scenegraph.utils.GeometryUtils;
  31 import org.simantics.scl.compiler.top.ValueNotFound;
  32 import org.simantics.scl.osgi.SCLOsgi;
  33 import org.simantics.scl.runtime.SCLContext;
  34 import org.simantics.scl.runtime.function.Function1;
  35 import org.simantics.structural.stubs.StructuralResource2;
  36
  37 public class ConnectionLineStyle extends StyleBase<List<Point2D>> {
  38
  39         public static class ConnectionLineNode extends G2DNode {
  40                 private static final BasicStroke STROKE = new BasicStroke(1.f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER, 1.f, new float[] {4.f, 2.f}, 0.f);
  41                 private static final Color[] colors = { Color.RED, Color.GREEN, Color.BLUE, Color.ORANGE, Color.CYAN, Color.PINK };
  42
  43                 private float strokeWidth;
  44                 private Line2D[] lines;
  45
  46                 public ConnectionLineNode() {
  47                         super();
  48                 }
  49
  50                 private static final long serialVersionUID = 1L;
  51
  52                 @Override
  53                 public Rectangle2D getBoundsInLocal() {
  54                         return null;
  55                 }
  56
  57                 @Override
  58                 public Rectangle2D getBoundsInLocal(boolean b) {
  59                         return null;
  60                 }
  61
  62                 @Override
  63                 public Rectangle2D getBounds() {
  64                         return null;
  65                 }
  66
  67                 public void setStrokeWidth(float w) {
  68                         strokeWidth = w;
  69                 }
  70
  71                 public void setPoints(List<Point2D> result) {
  72                         Point2D p0 = DistrictNetworkNodeUtils.calculatePoint2D(result.get(0), null);
  73                         lines = new Line2D[result.size() - 1];
  74                         for (int i = 1; i < result.size(); i++)
  75                         {
  76                                 Point2D p = result.get(i);
  77                                 lines[i-1] = p != null ? new Line2D.Double(p0, DistrictNetworkNodeUtils.calculatePoint2D(p, null)) : null;
  78                         }
  79                 }
  80
  81                 @Override
  82                 public void render(Graphics2D g2d) {
  83                         if (lines == null || lines.length == 0)
  84                                 return;
  85
  86                         // Keep fixed line width on screen
  87                         float scaleRecip = (float) GeometryUtils.getScale(g2d.getTransform());
  88                         g2d.setStroke(GeometryUtils.scaleStroke(STROKE, strokeWidth / scaleRecip));
  89
  90                         for (int i = 0; i < lines.length; i++) {
  91                                 if (lines[i] != null) {
  92                                         g2d.setColor(colors[i % colors.length]);
  93                                         g2d.draw(lines[i]);
  94                                 }
  95                         }
  96                 }
  97         }
  98
  99         @Override
 100         public List<Point2D> calculateStyle(ReadGraph graph, Resource runtimeDiagram, Resource entry, Resource groupItem)
 101                         throws DatabaseException {
 102                 DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
 103                 ModelingResources MOD = ModelingResources.getInstance(graph);
 104                 StructuralResource2 STR = StructuralResource2.getInstance(graph);
 105
 106                 Resource vertex = groupItem;
 107                 if (!graph.isInstanceOf(vertex, DN.Vertex))
 108                         return Collections.emptyList();
 109
 110                 double[] coords = graph.getRelatedValue(vertex, DiagramResource.getInstance(graph).HasLocation);
 111
 112                 Resource component = DistrictNetworkUtil.getMappedComponentCached(graph, vertex);
 113                 if (component == null)
 114                         return Collections.emptyList();
 115
 116                 Resource componentType = graph.getPossibleType(component, STR.Component);
 117                 if (componentType == null)
 118                         return Collections.emptyList();
 119
 120                 Function1<Resource, List<Resource>> fun = getConnectedComponentsFunctionCached(graph, componentType);
 121                 if (fun == null)
 122                         return Collections.emptyList();
 123
 124                 List<Resource> components = Simantics.applySCLRead(graph, fun, component);
 125
 126                 if (components == null || components.isEmpty())
 127                         return Collections.emptyList();
 128
 129                 List<Point2D> result = new ArrayList<>(components.size() + 1);
 130                 result.add(new Point2D.Double(coords[0], coords[1]));
 131                 for (Resource comp : components) {
 132                         Resource e = comp != null ? graph.getPossibleObject(comp, MOD.ComponentToElement) : null;
 133                         Resource mappingElement = e != null ? graph.getPossibleObject(e, DN.MappedFromElement) : null;
 134                         if (mappingElement != null) {
 135                                 double[] coords2 = graph.getRelatedValue(mappingElement, DiagramResource.getInstance(graph).HasLocation);
 136                                 result.add(new Point2D.Double(coords2[0], coords2[1]));
 137                         }
 138                         else {
 139                                 result.add(null);
 140                         }
 141                 }
 142
 143                 return result;
 144         }
 145
 146         @Override
 147         public void applyStyleForNode(EvaluationContext observer, INode parent, List<Point2D> result) {
 148                 if (result == null || result.size() < 2) {
 149                         ProfileVariables.denyChild(parent, "*", "districtNetworkConnection");
 150                         return;
 151                 }
 152
 153                 ConnectionLineNode node = ProfileVariables.claimChild(parent, "*", "districtNetworkConnection", ConnectionLineNode.class, observer);
 154                 if (node == null)
 155                         return;
 156
 157                 node.setPoints(result);
 158                 node.setZIndex(0);
 159                 node.setStrokeWidth(2.f);
 160         }
 161
 162         @Override
 163         protected void cleanupStyleForNode(EvaluationContext evaluationContext, INode parent) {
 164                 ProfileVariables.denyChild(parent, "*", "districtNetworkConnection");
 165         }
 166
 167         private static Function1<Resource, List<Resource>> getConnectedComponentsFunctionCached(ReadGraph graph, Resource componentType)
 168                         throws DatabaseException {
 169                 return graph.syncRequest(new ConnectedComponentsFunctionRequest(componentType), TransientCacheListener.instance());
 170         }
 171
 172         private static final class ConnectedComponentsFunctionRequest
 173                         extends ResourceRead<Function1<Resource, List<Resource>>> {
 174                 public ConnectedComponentsFunctionRequest(Resource resource) {
 175                         super(resource);
 176                 }
 177
 178                 @SuppressWarnings("unchecked")
 179                 @Override
 180                 public Function1<Resource, List<Resource>> perform(ReadGraph graph) throws DatabaseException {
 181                         Resource actionsModule = Layer0Utils.getPossibleChild(graph, resource, "Actions");
 182                         if (actionsModule == null || !graph.isInstanceOf(actionsModule, Layer0.getInstance(graph).SCLModule))
 183                                 return null;
 184
 185                         String uri = graph.getURI(actionsModule);
 186                         SCLContext sclContext = SCLContext.getCurrent();
 187                         Object oldGraph = sclContext.get("graph");
 188                         try {
 189                                 sclContext.put("graph", graph);
 190                                 return (Function1<Resource, List<Resource>>) SCLOsgi.MODULE_REPOSITORY.getValue(uri, "getConnectedComponents");
 191                         } catch (ValueNotFound e1) {
 192                                 return null;
 193                         } finally {
 194                                 sclContext.put("graph", oldGraph);
 195                         }
 196                 }
 197         }
 198 }