org.simantics.district.network.ui/src/org/simantics/district/network/ui/contributions/ChangeRoutePointToVertexHandler.java

   1 package org.simantics.district.network.ui.contributions;
   2
   3 import java.awt.geom.AffineTransform;
   4 import java.awt.geom.NoninvertibleTransformException;
   5 import java.awt.geom.Point2D;
   6 import java.lang.reflect.InvocationTargetException;
   7 import java.util.List;
   8 import java.util.Optional;
   9 import java.util.concurrent.TimeUnit;
  10
  11 import javax.inject.Named;
  12
  13 import org.eclipse.core.commands.ParameterizedCommand;
  14 import org.eclipse.e4.core.di.annotations.CanExecute;
  15 import org.eclipse.e4.core.di.annotations.Execute;
  16 import org.eclipse.e4.ui.model.application.ui.basic.MPart;
  17 import org.eclipse.e4.ui.services.IServiceConstants;
  18 import org.eclipse.jface.viewers.ISelection;
  19 import org.eclipse.ui.IEditorPart;
  20 import org.simantics.Simantics;
  21 import org.simantics.databoard.Bindings;
  22 import org.simantics.db.ReadGraph;
  23 import org.simantics.db.Resource;
  24 import org.simantics.db.WriteGraph;
  25 import org.simantics.db.common.request.ReadRequest;
  26 import org.simantics.db.common.request.WriteRequest;
  27 import org.simantics.db.exception.DatabaseException;
  28 import org.simantics.db.layer0.SelectionHints;
  29 import org.simantics.db.layer0.util.RemoverUtil;
  30 import org.simantics.db.request.Read;
  31 import org.simantics.diagram.stubs.DiagramResource;
  32 import org.simantics.district.network.DistrictNetworkUtil;
  33 import org.simantics.district.network.ModelledCRS;
  34 import org.simantics.district.network.ontology.DistrictNetworkResource;
  35 import org.simantics.district.network.ui.DNEdgeBuilder;
  36 import org.simantics.district.network.ui.DistrictDiagramEditor;
  37 import org.simantics.district.network.ui.NetworkDrawingParticipant;
  38 import org.simantics.g2d.canvas.ICanvasContext;
  39 import org.simantics.g2d.participant.MouseUtil;
  40 import org.simantics.g2d.participant.MouseUtil.MouseInfo;
  41 import org.simantics.ui.workbench.e4.E4WorkbenchUtils;
  42 import org.simantics.utils.threads.ThreadUtils;
  43 import org.simantics.utils.ui.ISelectionUtils;
  44 import org.slf4j.Logger;
  45 import org.slf4j.LoggerFactory;
  46
  47 public class ChangeRoutePointToVertexHandler {
  48
  49     private static final Logger LOGGER = LoggerFactory.getLogger(ChangeRoutePointToVertexHandler.class);
  50     static List<Resource> elements;
  51     static boolean cut = true;
  52
  53     @CanExecute
  54     public boolean canExecute(@Named(IServiceConstants.ACTIVE_SELECTION) ISelection selection) {
  55         List<Resource> elements = ISelectionUtils.getPossibleKeys(selection, SelectionHints.KEY_MAIN, Resource.class);
  56         if (elements.size() != 1)
  57             return false;
  58         try {
  59             return Simantics.getSession().syncRequest(new Read<Boolean>() {
  60
  61                 @Override
  62                 public Boolean perform(ReadGraph graph) throws DatabaseException {
  63                     DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
  64                     for (Resource selection : elements) {
  65                         if (!graph.isInstanceOf(selection, DN.Edge)) {
  66                             return false;
  67                         }
  68                     }
  69                     return true;
  70                 }
  71             });
  72         } catch (DatabaseException e) {
  73             LOGGER.error("Could not evaluate if mapping can be changed for selection {}", elements, e);
  74             return false;
  75         }
  76     }
  77
  78     @Execute
  79     public void execute(@Named(IServiceConstants.ACTIVE_PART) MPart mActiveEditorPart, @Named(IServiceConstants.ACTIVE_SELECTION) Object selection, ParameterizedCommand command) {
  80         final List<Resource> elements = ISelectionUtils.getPossibleKeys(selection, SelectionHints.KEY_MAIN, Resource.class);
  81
  82         Resource edge = elements.get(0);
  83         try {
  84             Point2D mouseClicked = mouseClickedOnEditor(mActiveEditorPart);
  85             if (mouseClicked != null) {
  86
  87                 IEditorPart activeEditorPart = E4WorkbenchUtils.getActiveIEditorPart(mActiveEditorPart);
  88                 if (activeEditorPart == null)
  89                     return;
  90                 if (!(activeEditorPart instanceof DistrictDiagramEditor))
  91                     return;
  92                 DistrictDiagramEditor editor = (DistrictDiagramEditor) activeEditorPart;
  93                 Resource diagram = editor.getInputResource();
  94
  95                 Simantics.getSession().asyncRequest(new ReadRequest() {
  96
  97                     @Override
  98                     public void run(ReadGraph graph) throws DatabaseException {
  99                         DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
 100                         double[] detailedGeom = graph.getPossibleRelatedValue(edge, DN.Edge_HasGeometry, Bindings.DOUBLE_ARRAY);
 101                         if (detailedGeom != null) {
 102                             double closestDistance = Double.MAX_VALUE;
 103                             Point2D closestPoint = null;
 104                             int j = 0;
 105                             for (int i = 0; i < detailedGeom.length; i += 2) {
 106                                 double x = detailedGeom[i];
 107                                 double y = detailedGeom[i + 1];
 108                                 Point2D currentPoint = new Point2D.Double(x, y);
 109                                 double currentDistance = mouseClicked.distance(currentPoint);
 110                                 if (currentDistance < closestDistance) {
 111                                     closestDistance = currentDistance;
 112                                     closestPoint = currentPoint;
 113                                     j = i;
 114                                 }
 115                             }
 116
 117                             final Point2D finalClosestPoint = closestPoint;
 118
 119                             DiagramResource DIA = DiagramResource.getInstance(graph);
 120                             Resource currentStartVertex = graph.getSingleObject(edge, DN.HasStartVertex);
 121                             double[] currentStartVertexCoords = graph.getRelatedValue(currentStartVertex, DIA.HasLocation, Bindings.DOUBLE_ARRAY);
 122                             Resource currentEndVertex = graph.getSingleObject(edge, DN.HasEndVertex);
 123                             double[] currentEndVertexCoords = graph.getRelatedValue(currentEndVertex, DIA.HasLocation, Bindings.DOUBLE_ARRAY);
 124
 125                             double[] detailedLeftEdgeGeometryCoords = new double[j];
 126                             for (int k = 0; k < j; k += 2) {
 127                                 double x = detailedGeom[k];
 128                                 double y = detailedGeom[k + 1];
 129                                 detailedLeftEdgeGeometryCoords[k] = x;
 130                                 detailedLeftEdgeGeometryCoords[k + 1] = y;
 131                             }
 132
 133                             double[] detailedRightEdgeGeometryCoords = new double[detailedGeom.length - j - 2];
 134                             int i = 0;
 135                             for (int k = j + 2; k < detailedGeom.length; k += 2) {
 136                                 double x = detailedGeom[k];
 137                                 double y = detailedGeom[k + 1];
 138                                 detailedRightEdgeGeometryCoords[i++] = x;
 139                                 detailedRightEdgeGeometryCoords[i++] = y;
 140                             }
 141
 142                             Simantics.getSession().asyncRequest(new WriteRequest() {
 143
 144                                 @Override
 145                                 public void perform(WriteGraph graph) throws DatabaseException {
 146                                     RemoverUtil.remove(graph, edge);
 147
 148                                     ThreadUtils.getNonBlockingWorkExecutor().schedule(() -> {
 149                                         Simantics.getSession().asyncRequest(new WriteRequest() {
 150
 151                                             @Override
 152                                             public void perform(WriteGraph graph) throws DatabaseException {
 153                                                 // we might have closest point
 154                                                 if (finalClosestPoint != null) {
 155                                                     Resource mapping = graph.getSingleObject(diagram, DistrictNetworkResource.getInstance(graph).VertexDefaultMapping);
 156                                                     double[] midVertexCoords = new double[] { finalClosestPoint.getX(), finalClosestPoint.getY() };
 157                                                     Resource createdVertex = DistrictNetworkUtil.createVertex(graph, diagram, midVertexCoords, 0, mapping);
 158
 159                                                     Optional<Resource> leftEdge = DNEdgeBuilder.create(graph, diagram, currentStartVertexCoords, 0, midVertexCoords, 0, detailedLeftEdgeGeometryCoords, 0.001);
 160                                                     Optional<Resource> rightEdge = DNEdgeBuilder.create(graph, diagram, midVertexCoords, 0, currentEndVertexCoords, 0, detailedRightEdgeGeometryCoords, 0.001);
 161
 162                                                 }
 163                                             }
 164                                         });
 165                                     }, 500, TimeUnit.MILLISECONDS);
 166
 167                                 }
 168                             });
 169
 170                         } else {
 171                             // no can do - or it would be possible to split the edge here in to two different edges
 172                         }
 173                     }
 174                 });
 175             } else {
 176                 LOGGER.warn("No mouseClicked for editor {}", mActiveEditorPart);
 177             }
 178         } catch (InvocationTargetException e) {
 179             LOGGER.error("Could not change route point to vertex", e);
 180         }
 181     }
 182
 183     private static Point2D mouseClickedOnEditor(MPart mActiveEditorPart) throws InvocationTargetException {
 184         IEditorPart activeEditorPart = E4WorkbenchUtils.getActiveIEditorPart(mActiveEditorPart);
 185         if (activeEditorPart == null)
 186             return null;
 187         if (!(activeEditorPart instanceof DistrictDiagramEditor))
 188             return null;
 189         DistrictDiagramEditor editor = (DistrictDiagramEditor) activeEditorPart;
 190
 191         ICanvasContext ctx = editor.getAdapter(ICanvasContext.class);
 192         NetworkDrawingParticipant drawingParticipant = ctx.getAtMostOneItemOfClass(NetworkDrawingParticipant.class);
 193         AffineTransform drawingTransform = drawingParticipant.getTransform();
 194         MouseUtil util = ctx.getAtMostOneItemOfClass(MouseUtil.class);
 195         MouseInfo mouseInfo = util.getMousePressedInfo(0);
 196         if (mouseInfo == null) {
 197             return null;
 198         }
 199         Point2D canvasPosition = mouseInfo.canvasPosition;
 200         Point2D transformed = null;
 201         try {
 202             transformed = drawingTransform.inverseTransform(canvasPosition, new Point2D.Double());
 203         } catch (NoninvertibleTransformException e) {
 204             LOGGER.error("Could not create inverse transform of {}", drawingTransform, e);
 205             throw new InvocationTargetException(e);
 206         }
 207         double x = ModelledCRS.xToLongitude(transformed.getX());
 208         double y = ModelledCRS.yToLatitude(-transformed.getY());
 209         return new Point2D.Double(x, y);
 210     }
 211 }