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