org.simantics.district.network.ui/src/org/simantics/district/network/ui/nodes/NetworkDrawingNode.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.Stroke;
   7 import java.awt.geom.AffineTransform;
   8 import java.awt.geom.Path2D;
   9 import java.awt.geom.Point2D;
  10 import java.awt.geom.Rectangle2D;
  11 import java.util.ArrayList;
  12 import java.util.Iterator;
  13 import java.util.List;
  14 import java.util.concurrent.TimeUnit;
  15
  16 import org.simantics.Simantics;
  17 import org.simantics.db.Resource;
  18 import org.simantics.db.WriteGraph;
  19 import org.simantics.db.common.request.WriteRequest;
  20 import org.simantics.db.exception.DatabaseException;
  21 import org.simantics.db.request.Write;
  22 import org.simantics.diagram.elements.DiagramNodeUtil;
  23 import org.simantics.diagram.ui.DiagramModelHints;
  24 import org.simantics.district.network.DistrictNetworkUtil;
  25 import org.simantics.district.network.ModelledCRS;
  26 import org.simantics.district.network.ontology.DistrictNetworkResource;
  27 import org.simantics.district.network.ui.DNEdgeBuilder;
  28 import org.simantics.district.network.ui.NetworkDrawingParticipant;
  29 import org.simantics.g2d.canvas.Hints;
  30 import org.simantics.g2d.canvas.ICanvasContext;
  31 import org.simantics.g2d.canvas.IToolMode;
  32 import org.simantics.g2d.diagram.IDiagram;
  33 import org.simantics.scenegraph.g2d.G2DNode;
  34 import org.simantics.scenegraph.g2d.events.EventTypes;
  35 import org.simantics.scenegraph.g2d.events.KeyEvent.KeyPressedEvent;
  36 import org.simantics.scenegraph.g2d.events.MouseEvent;
  37 import org.simantics.scenegraph.g2d.events.MouseEvent.MouseClickEvent;
  38 import org.simantics.scenegraph.g2d.events.MouseEvent.MouseDoubleClickedEvent;
  39 import org.simantics.scenegraph.g2d.events.MouseEvent.MouseMovedEvent;
  40 import org.simantics.scenegraph.utils.GeometryUtils;
  41 import org.simantics.scenegraph.utils.NodeUtil;
  42 import org.simantics.utils.threads.ThreadUtils;
  43
  44 public class NetworkDrawingNode extends G2DNode {
  45
  46     static class DrawingNode {
  47
  48         private List<Point2D> routeNodes = new ArrayList<>();
  49     }
  50
  51     private static final long serialVersionUID = -3475301184009620573L;
  52
  53     private Point2D currentMousePos = null;
  54
  55     private List<DrawingNode> nodes = new ArrayList<>();
  56     private DrawingNode currentRouteNode = null;
  57
  58     private Resource diagramResource;
  59
  60     private NetworkDrawingParticipant participant;
  61
  62     private IDiagram diagram;
  63
  64     private static final Stroke DASHED_STROKE = new BasicStroke(2.0f,
  65             BasicStroke.CAP_ROUND,
  66             BasicStroke.JOIN_ROUND,
  67             4.0f, new float[]{4.0f}, 0.0f);
  68
  69     private static final Color BLUE_ALPHA = new Color(0, 0, 255, 100);
  70     private static final Color RED_ALPHA = new Color(255, 0, 0, 100);
  71
  72     private boolean scaleStroke = true;
  73
  74     @Override
  75     public void init() {
  76         super.init();
  77         addEventHandler(this);
  78     }
  79
  80     public void setNetworkDrawingParticipant(NetworkDrawingParticipant participant) {
  81         this.participant = participant;
  82     }
  83
  84     public void setDiagram(IDiagram diagram) {
  85         if (diagram != null) {
  86             this.diagram = diagram;
  87             this.diagramResource = diagram.getHint(DiagramModelHints.KEY_DIAGRAM_RESOURCE);
  88         }
  89     }
  90
  91     @Override
  92     public void render(Graphics2D g2d) {
  93         if (nodes.isEmpty())
  94             return;
  95
  96         Color old = g2d.getColor();
  97         Stroke oldStroke = g2d.getStroke();
  98
  99         Iterator<DrawingNode> dnodeIterator = nodes.iterator();
 100         while (dnodeIterator.hasNext()) {
 101             Path2D path = new Path2D.Double();
 102             DrawingNode dnode = dnodeIterator.next();
 103             Iterator<Point2D> nodeIter = dnode.routeNodes.iterator();
 104             if (nodeIter.hasNext()) {
 105                 Point2D node = nodeIter.next();
 106                 path.moveTo(node.getX(), node.getY());
 107             }
 108             while (nodeIter.hasNext()) {
 109                 Point2D node = nodeIter.next();
 110                 path.lineTo(node.getX(), node.getY());
 111             }
 112             if (!dnodeIterator.hasNext()) {
 113                 if (currentMousePos != null)
 114                     path.lineTo(currentMousePos.getX(), currentMousePos.getY());
 115             }
 116
 117             if (DASHED_STROKE != null) {
 118                 if (scaleStroke && DASHED_STROKE instanceof BasicStroke) {
 119                     BasicStroke bs = GeometryUtils.scaleStroke(DASHED_STROKE, (float) (1.0 / GeometryUtils.getScale(g2d.getTransform())));
 120                     g2d.setStroke(bs);
 121                 } else {
 122                     g2d.setStroke(DASHED_STROKE);
 123                 }
 124             }
 125
 126             g2d.setColor(BLUE_ALPHA);
 127             g2d.draw(path);
 128
 129             g2d.setColor(RED_ALPHA);
 130             BasicStroke stroke = GeometryUtils.scaleStroke(DASHED_STROKE, (float) (1.0 / GeometryUtils.getScale(g2d.getTransform())));
 131             g2d.setStroke(stroke);
 132             Point2D currentPoint = path.getCurrentPoint();
 133             g2d.draw(new Rectangle2D.Double(currentPoint.getX() - 0.0001 / 2, currentPoint.getY() - 0.0001 / 2, 0.0001, 0.0001));
 134         }
 135
 136         g2d.setStroke(oldStroke);
 137         g2d.setColor(old);
 138     }
 139
 140     @Override
 141     public Rectangle2D getBoundsInLocal() {
 142         return null;
 143     }
 144
 145     @Override
 146     public int getEventMask() {
 147         return EventTypes.AnyMask;
 148     }
 149
 150     @Override
 151     protected boolean mouseDoubleClicked(MouseDoubleClickedEvent e) {
 152         // nodes to path2d
 153         IToolMode mode = getToolMode();
 154         if (mode == Hints.CONNECTTOOL || e.hasAnyModifier(MouseEvent.ALT_MASK | MouseEvent.ALT_GRAPH_MASK)) {
 155             // ok, new routenode starts from here
 156             Point2D localPos = NodeUtil.worldToLocal(this, e.controlPosition, new Point2D.Double());
 157             Point2D.Double pos = new Point2D.Double(localPos.getX(), localPos.getY());
 158             if (currentRouteNode != null) {
 159                 //currentRouteNode.routeNodes.add(pos);
 160                 currentRouteNode = new DrawingNode();
 161                 currentRouteNode.routeNodes.add(pos);
 162                 nodes.add(currentRouteNode);
 163             } else {
 164                 // ok, this must be creation of dh_point
 165                 double scale = getTransform().getScaleY();
 166                 double x = ModelledCRS.xToLongitude(pos.getX() / scale);
 167                 double y = ModelledCRS.yToLatitude(-pos.getY() / scale);
 168
 169                 boolean leftButton = e.button == MouseEvent.LEFT_BUTTON;
 170
 171                 ThreadUtils.getNonBlockingWorkExecutor().schedule(() -> {
 172                     Simantics.getSession().asyncRequest(new Write() {
 173
 174                         @Override
 175                         public void perform(WriteGraph graph) throws DatabaseException {
 176                             graph.markUndoPoint();
 177                             Resource mapping = null;
 178                             if (leftButton) {
 179                                 mapping = graph.getSingleObject(diagramResource, DistrictNetworkResource.getInstance(graph).LeftClickDefaultMapping);
 180                             } else {
 181                                 mapping = graph.getSingleObject(diagramResource, DistrictNetworkResource.getInstance(graph).RightClickDefaultMapping);
 182                             }
 183                             if (mapping == null) {
 184                                 mapping = graph.getSingleObject(diagramResource, DistrictNetworkResource.getInstance(graph).VertexDefaultMapping);
 185                             }
 186                             DistrictNetworkUtil.createVertex(graph, diagramResource, new double[] { x, y }, 0, mapping); // TODO: elevation can be fetched from e.g. elevation API
 187                         }
 188                     });
 189                 }, 100, TimeUnit.MILLISECONDS);
 190             }
 191             repaint();
 192             return true;
 193         }
 194         return super.mouseDoubleClicked(e);
 195     }
 196
 197     private void createEdge(DrawingNode node) {
 198
 199         Point2D start = node.routeNodes.get(0);
 200         Point2D end = node.routeNodes.get(node.routeNodes.size() - 1);
 201
 202         double currentPadding = DistrictNetworkVertexNode.width;
 203         AffineTransform test = getTransform();
 204         ICanvasContext ctx = DiagramNodeUtil.getCanvasContext(this);
 205         AffineTransform tr = ctx.getHintStack().getHint(Hints.KEY_CANVAS_TRANSFORM);
 206         AffineTransform testing = new AffineTransform(tr);
 207         testing.concatenate(test);
 208         double calculateScaleRecip = DistrictNetworkNodeUtils.calculateScaleRecip(testing);
 209         double padding = currentPadding * calculateScaleRecip;
 210         /*
 211          *  To convert y-coordinates to map coordinates in ruler, use:
 212          *    double val = (y-offsetY)/scaleY;
 213          *    val = Math.toDegrees(Math.atan(Math.sinh(Math.toRadians(val))));
 214          *    String str = formatValue(val);
 215          */
 216         // TODO: fix scale
 217         double scaleY = getTransform().getScaleY();
 218         double scaleX = getTransform().getScaleX();
 219
 220         double startLat = ModelledCRS.yToLatitude(-start.getY() / scaleY);
 221         double startLon = ModelledCRS.xToLongitude(start.getX() / scaleX);
 222
 223         double endLat = ModelledCRS.yToLatitude(-end.getY() / scaleY);
 224         double endLon = ModelledCRS.xToLongitude(end.getX() / scaleX);
 225
 226         double[] startCoords = new double[] { startLon, startLat };
 227         double[] endCoords = new double[] { endLon, endLat };
 228
 229         double[] detailedGeometryCoords = new double[node.routeNodes.size() * 2];
 230         int i = 0;
 231         for (Point2D p : node.routeNodes) {
 232             double lat = ModelledCRS.yToLatitude(-p.getY() / scaleY);
 233             double lon = ModelledCRS.xToLongitude(p.getX() / scaleX);
 234             detailedGeometryCoords[i++] = lon;
 235             detailedGeometryCoords[i++] = lat;
 236         }
 237
 238         DNEdgeBuilder builder = new DNEdgeBuilder(diagramResource, diagram);
 239         Simantics.getSession().asyncRequest(new WriteRequest() {
 240
 241             @Override
 242             public void perform(WriteGraph graph) throws DatabaseException {
 243                 builder.create(graph, startCoords, 0, endCoords, 0, detailedGeometryCoords, padding);
 244             }
 245         });
 246
 247     }
 248
 249     @Override
 250     protected boolean mouseClicked(MouseClickEvent e) {
 251         // check ToolMode
 252         IToolMode mode = getToolMode();
 253         if (mode == Hints.CONNECTTOOL || e.hasAnyModifier(MouseEvent.ALT_MASK | MouseEvent.ALT_GRAPH_MASK)) {
 254             if (e.button == MouseEvent.RIGHT_BUTTON && !nodes.isEmpty()) {
 255                 nodes.remove(nodes.size() - 1);
 256             } else if (e.button == MouseEvent.LEFT_BUTTON) {
 257                 Point2D localPos = NodeUtil.worldToLocal(this, e.controlPosition, new Point2D.Double());
 258                 if (currentRouteNode == null && canStartEdge(localPos)) {
 259                     // ok, we can start from here
 260                     currentRouteNode = new DrawingNode();
 261                     currentRouteNode.routeNodes.add(new Point2D.Double(localPos.getX(), localPos.getY()));
 262                     nodes.add(currentRouteNode);
 263                 } else if (currentRouteNode != null && canStartEdge(localPos)) {
 264                     // let's commit our new routenode
 265                     currentRouteNode.routeNodes.add(new Point2D.Double(localPos.getX(), localPos.getY()));
 266                     Iterator<DrawingNode> nodeIter = nodes.iterator();
 267                     while (nodeIter.hasNext()) {
 268                         createEdge(nodeIter.next());
 269                     }
 270                     currentRouteNode = null;
 271                     nodes.clear();
 272                 } else if (currentRouteNode != null) {
 273                     currentRouteNode.routeNodes.add(new Point2D.Double(localPos.getX(), localPos.getY()));
 274                 }
 275             }
 276             repaint();
 277             return true;
 278         }
 279         return super.mouseClicked(e);
 280     }
 281
 282     private boolean canStartEdge(Point2D currentPos) {
 283         return participant.isHoveringOverNode(currentPos);
 284     }
 285
 286     private IToolMode getToolMode() {
 287         return participant.getHint(Hints.KEY_TOOL);
 288     }
 289
 290     @Override
 291     protected boolean mouseMoved(MouseMovedEvent e) {
 292         IToolMode mode = getToolMode();
 293         boolean repaint = false;
 294         Point2D p = NodeUtil.worldToLocal(this, e.controlPosition, new Point2D.Double());
 295         boolean isConnectionTool = mode == Hints.CONNECTTOOL || e.hasAnyModifier(MouseEvent.ALT_MASK | MouseEvent.ALT_GRAPH_MASK);
 296         if (participant.pickHoveredElement(p, isConnectionTool)) {
 297             repaint = true;
 298         }
 299         if (!nodes.isEmpty()) {
 300             currentMousePos = p;
 301
 302             repaint();
 303             return true;
 304         }
 305         currentMousePos = null;
 306         if (repaint == true)
 307             repaint();
 308         return super.mouseMoved(e);
 309     }
 310
 311     @Override
 312     protected boolean keyPressed(KeyPressedEvent e) {
 313         if (e.keyCode == java.awt.event.KeyEvent.VK_ESCAPE) {
 314             currentRouteNode = null;
 315             nodes.clear();
 316             repaint();
 317             return true;
 318         }
 319         return super.keyPressed(e);
 320
 321     }
 322 }