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 NetworkDrawingParticipant participant;
  59
  60     private IDiagram diagram;
  61
  62     private static final Stroke DASHED_STROKE = new BasicStroke(2.0f,
  63             BasicStroke.CAP_ROUND,
  64             BasicStroke.JOIN_ROUND,
  65             4.0f, new float[]{4.0f}, 0.0f);
  66
  67     private static final Color BLUE_ALPHA = new Color(0, 0, 255, 100);
  68     private static final Color RED_ALPHA = new Color(255, 0, 0, 100);
  69
  70     private boolean scaleStroke = true;
  71
  72     @Override
  73     public void init() {
  74         super.init();
  75         addEventHandler(this);
  76     }
  77
  78     public void setNetworkDrawingParticipant(NetworkDrawingParticipant participant) {
  79         this.participant = participant;
  80     }
  81
  82     public void setDiagram(IDiagram diagram) {
  83         if (diagram != null) {
  84             this.diagram = diagram;
  85             this.diagramResource = diagram.getHint(DiagramModelHints.KEY_DIAGRAM_RESOURCE);
  86         }
  87     }
  88
  89     @Override
  90     public void render(Graphics2D g2d) {
  91         if (nodes.isEmpty())
  92             return;
  93
  94         Color old = g2d.getColor();
  95         Stroke oldStroke = g2d.getStroke();
  96
  97         Iterator<DrawingNode> dnodeIterator = nodes.iterator();
  98         while (dnodeIterator.hasNext()) {
  99             Path2D path = new Path2D.Double();
 100             DrawingNode dnode = dnodeIterator.next();
 101             Iterator<Point2D> nodeIter = dnode.routeNodes.iterator();
 102             if (nodeIter.hasNext()) {
 103                 Point2D node = nodeIter.next();
 104                 path.moveTo(node.getX(), node.getY());
 105             }
 106             while (nodeIter.hasNext()) {
 107                 Point2D node = nodeIter.next();
 108                 path.lineTo(node.getX(), node.getY());
 109             }
 110             if (!dnodeIterator.hasNext()) {
 111                 if (currentMousePos != null)
 112                     path.lineTo(currentMousePos.getX(), currentMousePos.getY());
 113             }
 114
 115             if (DASHED_STROKE != null) {
 116                 if (scaleStroke && DASHED_STROKE instanceof BasicStroke) {
 117                     BasicStroke bs = GeometryUtils.scaleStroke(DASHED_STROKE, (float) (1.0 / GeometryUtils.getScale(g2d.getTransform())));
 118                     g2d.setStroke(bs);
 119                 } else {
 120                     g2d.setStroke(DASHED_STROKE);
 121                 }
 122             }
 123
 124             g2d.setColor(BLUE_ALPHA);
 125             g2d.draw(path);
 126
 127             g2d.setColor(RED_ALPHA);
 128             BasicStroke stroke = GeometryUtils.scaleStroke(DASHED_STROKE, (float) (1.0 / GeometryUtils.getScale(g2d.getTransform())));
 129             g2d.setStroke(stroke);
 130             Point2D currentPoint = path.getCurrentPoint();
 131             g2d.draw(new Rectangle2D.Double(currentPoint.getX() - 0.0001 / 2, currentPoint.getY() - 0.0001 / 2, 0.0001, 0.0001));
 132         }
 133
 134         g2d.setStroke(oldStroke);
 135         g2d.setColor(old);
 136     }
 137
 138     @Override
 139     public Rectangle2D getBoundsInLocal() {
 140         return null;
 141     }
 142
 143     @Override
 144     public int getEventMask() {
 145         return EventTypes.AnyMask;
 146     }
 147
 148     @Override
 149     protected boolean mouseDoubleClicked(MouseDoubleClickedEvent e) {
 150         // nodes to path2d
 151         IToolMode mode = getToolMode();
 152         if (mode == Hints.CONNECTTOOL || e.hasAnyModifier(MouseEvent.ALT_MASK | MouseEvent.ALT_GRAPH_MASK)) {
 153             // ok, new routenode starts from here
 154             Point2D localPos = NodeUtil.worldToLocal(this, e.controlPosition, new Point2D.Double());
 155             Point2D.Double pos = new Point2D.Double(localPos.getX(), localPos.getY());
 156             if (currentRouteNode != null) {
 157                 //currentRouteNode.routeNodes.add(pos);
 158                 currentRouteNode = new DrawingNode();
 159                 currentRouteNode.routeNodes.add(pos);
 160                 nodes.add(currentRouteNode);
 161             } else {
 162                 // ok, this must be creation of dh_point
 163                 double scale = getTransform().getScaleY();
 164                 double x = ModelledCRS.xToLongitude(pos.getX() / scale);
 165                 double y = ModelledCRS.yToLatitude(-pos.getY() / scale);
 166                 Simantics.getSession().asyncRequest(new Write() {
 167
 168                     @Override
 169                     public void perform(WriteGraph graph) throws DatabaseException {
 170                         graph.markUndoPoint();
 171                         Resource defaultMapping = graph.getSingleObject(diagramResource, DistrictNetworkResource.getInstance(graph).VertexDefaultMapping);
 172                         DistrictNetworkUtil.createVertex(graph, diagramResource, new double[] { x, y }, 0, defaultMapping); // TODO: elevation can be fetched from e.g. elevation API
 173                     }
 174                 });
 175             }
 176             repaint();
 177             return true;
 178         }
 179         return super.mouseDoubleClicked(e);
 180     }
 181
 182     private void createEdge(DrawingNode node) {
 183
 184         Point2D start = node.routeNodes.get(0);
 185         Point2D end = node.routeNodes.get(node.routeNodes.size() - 1);
 186
 187         double currentPadding = DistrictNetworkVertexNode.width;
 188         AffineTransform test = getTransform();
 189         ICanvasContext ctx = DiagramNodeUtil.getCanvasContext(this);
 190         AffineTransform tr = ctx.getHintStack().getHint(Hints.KEY_CANVAS_TRANSFORM);
 191         AffineTransform testing = new AffineTransform(tr);
 192         testing.concatenate(test);
 193         double calculateScaleRecip = DistrictNetworkNodeUtils.calculateScaleRecip(testing);
 194         double padding = currentPadding * calculateScaleRecip;
 195         /*
 196          *  To convert y-coordinates to map coordinates in ruler, use:
 197          *    double val = (y-offsetY)/scaleY;
 198          *    val = Math.toDegrees(Math.atan(Math.sinh(Math.toRadians(val))));
 199          *    String str = formatValue(val);
 200          */
 201         // TODO: fix scale
 202         double scaleY = getTransform().getScaleY();
 203         double scaleX = getTransform().getScaleX();
 204
 205         double startLat = ModelledCRS.yToLatitude(-start.getY() / scaleY);
 206         double startLon = ModelledCRS.xToLongitude(start.getX() / scaleX);
 207
 208         double endLat = ModelledCRS.yToLatitude(-end.getY() / scaleY);
 209         double endLon = ModelledCRS.xToLongitude(end.getX() / scaleX);
 210
 211         double[] startCoords = new double[] { startLon, startLat };
 212         double[] endCoords = new double[] { endLon, endLat };
 213
 214         double[] detailedGeometryCoords = new double[node.routeNodes.size() * 2];
 215         int i = 0;
 216         for (Point2D p : node.routeNodes) {
 217             double lat = ModelledCRS.yToLatitude(-p.getY() / scaleY);
 218             double lon = ModelledCRS.xToLongitude(p.getX() / scaleX);
 219             detailedGeometryCoords[i++] = lon;
 220             detailedGeometryCoords[i++] = lat;
 221         }
 222
 223         DNEdgeBuilder builder = new DNEdgeBuilder(diagramResource, diagram);
 224         Simantics.getSession().asyncRequest(new WriteRequest() {
 225
 226             @Override
 227             public void perform(WriteGraph graph) throws DatabaseException {
 228                 builder.create(graph, startCoords, 0, endCoords, 0, detailedGeometryCoords, padding);
 229             }
 230         });
 231
 232     }
 233
 234     @Override
 235     protected boolean mouseClicked(MouseClickEvent e) {
 236         // check ToolMode
 237         IToolMode mode = getToolMode();
 238         if (mode == Hints.CONNECTTOOL || e.hasAnyModifier(MouseEvent.ALT_MASK | MouseEvent.ALT_GRAPH_MASK)) {
 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                 } else if (currentRouteNode != null) {
 258                     currentRouteNode.routeNodes.add(new Point2D.Double(localPos.getX(), localPos.getY()));
 259                 }
 260             }
 261             repaint();
 262             return true;
 263         }
 264         return super.mouseClicked(e);
 265     }
 266
 267     private boolean canStartEdge(Point2D currentPos) {
 268         return participant.isHoveringOverNode(currentPos);
 269     }
 270
 271     private IToolMode getToolMode() {
 272         return participant.getHint(Hints.KEY_TOOL);
 273     }
 274
 275     @Override
 276     protected boolean mouseMoved(MouseMovedEvent e) {
 277         IToolMode mode = getToolMode();
 278         boolean repaint = false;
 279         Point2D p = NodeUtil.worldToLocal(this, e.controlPosition, new Point2D.Double());
 280         boolean isConnectionTool = mode == Hints.CONNECTTOOL || e.hasAnyModifier(MouseEvent.ALT_MASK | MouseEvent.ALT_GRAPH_MASK);
 281         if (participant.pickHoveredElement(p, isConnectionTool)) {
 282             repaint = true;
 283         }
 284         if (!nodes.isEmpty()) {
 285             currentMousePos = p;
 286
 287             repaint();
 288             return true;
 289         }
 290         currentMousePos = null;
 291         if (repaint == true)
 292             repaint();
 293         return super.mouseMoved(e);
 294     }
 295
 296     @Override
 297     protected boolean keyPressed(KeyPressedEvent e) {
 298         if (e.keyCode == java.awt.event.KeyEvent.VK_ESCAPE) {
 299             currentRouteNode = null;
 300             nodes.clear();
 301             repaint();
 302             return true;
 303         }
 304         return super.keyPressed(e);
 305
 306     }
 307 }