--- /dev/null
+package org.simantics.district.network.ui.nodes;
+
+import java.awt.BasicStroke;
+import java.awt.Color;
+import java.awt.Graphics2D;
+import java.awt.geom.Line2D;
+import java.awt.geom.Point2D;
+import java.awt.geom.Rectangle2D;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import org.simantics.Simantics;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.common.procedure.adapter.TransientCacheListener;
+import org.simantics.db.common.request.ResourceRead;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.layer0.util.Layer0Utils;
+import org.simantics.diagram.profile.StyleBase;
+import org.simantics.diagram.stubs.DiagramResource;
+import org.simantics.district.network.DistrictNetworkUtil;
+import org.simantics.district.network.ontology.DistrictNetworkResource;
+import org.simantics.layer0.Layer0;
+import org.simantics.modeling.ModelingResources;
+import org.simantics.scenegraph.INode;
+import org.simantics.scenegraph.g2d.G2DNode;
+import org.simantics.scenegraph.profile.EvaluationContext;
+import org.simantics.scenegraph.profile.common.ProfileVariables;
+import org.simantics.scenegraph.utils.GeometryUtils;
+import org.simantics.scl.compiler.top.ValueNotFound;
+import org.simantics.scl.osgi.SCLOsgi;
+import org.simantics.scl.runtime.SCLContext;
+import org.simantics.scl.runtime.function.Function1;
+import org.simantics.structural.stubs.StructuralResource2;
+
+public class ConnectionLineStyle extends StyleBase<List<Point2D>> {
+
+ public static class ConnectionLineNode extends G2DNode {
+ 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);
+ private static final Color[] colors = { Color.RED, Color.GREEN, Color.BLUE, Color.ORANGE, Color.CYAN, Color.PINK };
+
+ private float strokeWidth;
+ private Line2D[] lines;
+
+ public ConnectionLineNode() {
+ super();
+ }
+
+ private static final long serialVersionUID = 1L;
+
+ @Override
+ public Rectangle2D getBoundsInLocal() {
+ return null;
+ }
+
+ @Override
+ public Rectangle2D getBoundsInLocal(boolean b) {
+ return null;
+ }
+
+ @Override
+ public Rectangle2D getBounds() {
+ return null;
+ }
+
+ public void setStrokeWidth(float w) {
+ strokeWidth = w;
+ }
+
+ public void setPoints(List<Point2D> result) {
+ Point2D p0 = DistrictNetworkNodeUtils.calculatePoint2D(result.get(0), null);
+ lines = new Line2D[result.size() - 1];
+ for (int i = 1; i < result.size(); i++)
+ {
+ Point2D p = result.get(i);
+ lines[i-1] = p != null ? new Line2D.Double(p0, DistrictNetworkNodeUtils.calculatePoint2D(p, null)) : null;
+ }
+ }
+
+ @Override
+ public void render(Graphics2D g2d) {
+ if (lines == null || lines.length == 0)
+ return;
+
+ // Keep fixed line width on screen
+ float scaleRecip = (float) GeometryUtils.getScale(g2d.getTransform());
+ g2d.setStroke(GeometryUtils.scaleStroke(STROKE, strokeWidth / scaleRecip));
+
+ for (int i = 0; i < lines.length; i++) {
+ if (lines[i] != null) {
+ g2d.setColor(colors[i % colors.length]);
+ g2d.draw(lines[i]);
+ }
+ }
+ }
+ }
+
+ @Override
+ public List<Point2D> calculateStyle(ReadGraph graph, Resource runtimeDiagram, Resource entry, Resource groupItem)
+ throws DatabaseException {
+ DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
+ ModelingResources MOD = ModelingResources.getInstance(graph);
+ StructuralResource2 STR = StructuralResource2.getInstance(graph);
+
+ Resource vertex = groupItem;
+ if (!graph.isInstanceOf(vertex, DN.Vertex))
+ return Collections.emptyList();
+
+ double[] coords = graph.getRelatedValue(vertex, DiagramResource.getInstance(graph).HasLocation);
+
+ Resource component = DistrictNetworkUtil.getMappedComponentCached(graph, vertex);
+ if (component == null)
+ return Collections.emptyList();
+
+ Resource componentType = graph.getPossibleType(component, STR.Component);
+ if (componentType == null)
+ return Collections.emptyList();
+
+ Function1<Resource, List<Resource>> fun = getConnectedComponentsFunctionCached(graph, componentType);
+ if (fun == null)
+ return Collections.emptyList();
+
+ List<Resource> components = Simantics.applySCLRead(graph, fun, component);
+
+ if (components == null || components.isEmpty())
+ return Collections.emptyList();
+
+ List<Point2D> result = new ArrayList<>(components.size() + 1);
+ result.add(new Point2D.Double(coords[0], coords[1]));
+ for (Resource comp : components) {
+ Resource e = comp != null ? graph.getPossibleObject(comp, MOD.ComponentToElement) : null;
+ Resource mappingElement = e != null ? graph.getPossibleObject(e, DN.MappedFromElement) : null;
+ if (mappingElement != null) {
+ double[] coords2 = graph.getRelatedValue(mappingElement, DiagramResource.getInstance(graph).HasLocation);
+ result.add(new Point2D.Double(coords2[0], coords2[1]));
+ }
+ else {
+ result.add(null);
+ }
+ }
+
+ return result;
+ }
+
+ @Override
+ public void applyStyleForNode(EvaluationContext observer, INode parent, List<Point2D> result) {
+ if (result == null || result.size() < 2) {
+ ProfileVariables.denyChild(parent, "*", "districtNetworkConnection");
+ return;
+ }
+
+ ConnectionLineNode node = ProfileVariables.claimChild(parent, "*", "districtNetworkConnection", ConnectionLineNode.class, observer);
+ if (node == null)
+ return;
+
+ node.setPoints(result);
+ node.setZIndex(0);
+ node.setStrokeWidth(2.f);
+ }
+
+ @Override
+ protected void cleanupStyleForNode(EvaluationContext evaluationContext, INode parent) {
+ ProfileVariables.denyChild(parent, "*", "districtNetworkConnection");
+ }
+
+ private static Function1<Resource, List<Resource>> getConnectedComponentsFunctionCached(ReadGraph graph, Resource componentType)
+ throws DatabaseException {
+ return graph.syncRequest(new ConnectedComponentsFunctionRequest(componentType), TransientCacheListener.instance());
+ }
+
+ private static final class ConnectedComponentsFunctionRequest
+ extends ResourceRead<Function1<Resource, List<Resource>>> {
+ public ConnectedComponentsFunctionRequest(Resource resource) {
+ super(resource);
+ }
+
+ @SuppressWarnings("unchecked")
+ @Override
+ public Function1<Resource, List<Resource>> perform(ReadGraph graph) throws DatabaseException {
+ Resource actionsModule = Layer0Utils.getPossibleChild(graph, resource, "Actions");
+ if (actionsModule == null || !graph.isInstanceOf(actionsModule, Layer0.getInstance(graph).SCLModule))
+ return null;
+
+ String uri = graph.getURI(actionsModule);
+ SCLContext sclContext = SCLContext.getCurrent();
+ Object oldGraph = sclContext.get("graph");
+ try {
+ sclContext.put("graph", graph);
+ return (Function1<Resource, List<Resource>>) SCLOsgi.MODULE_REPOSITORY.getValue(uri, "getConnectedComponents");
+ } catch (ValueNotFound e1) {
+ return null;
+ } finally {
+ sclContext.put("graph", oldGraph);
+ }
+ }
+ }
+}
Code Review / simantics / district.git / commitdiff