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annotate dwtx/draw2d/graph/RouteEdges.d @ 98:95307ad235d9

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Added Draw2d code, still work in progress
author Frank Benoit <benoit@tionex.de>
date Sun, 03 Aug 2008 00:52:14 +0200
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1 /*******************************************************************************
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2 * Copyright (c) 2003, 2005 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module dwtx.draw2d.graph.RouteEdges;
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14
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15 import dwt.dwthelper.utils;
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16
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17 import dwtx.draw2d.geometry.Insets;
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18 import dwtx.draw2d.geometry.Point;
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19 import dwtx.draw2d.geometry.PointList;
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20 import dwtx.draw2d.geometry.Rectangle;
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21 import dwtx.draw2d.graph.GraphVisitor;
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22 import dwtx.draw2d.graph.DirectedGraph;
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23 import dwtx.draw2d.graph.Edge;
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24 import dwtx.draw2d.graph.SubgraphBoundary;
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25 import dwtx.draw2d.graph.ShortestPathRouter;
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26 import dwtx.draw2d.graph.Path;
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27 import dwtx.draw2d.graph.VirtualNode;
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28 import dwtx.draw2d.graph.Node;
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29
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30 /**
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31 * @author Randy Hudson
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32 */
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33 class RouteEdges : GraphVisitor {
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34
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35 /**
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36 * @see GraphVisitor#visit(DirectedGraph)
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37 */
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38 public void revisit(DirectedGraph g) {
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39 for (int i = 0; i < g.edges.size(); i++) {
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40 Edge edge = cast(Edge)g.edges.get(i);
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41 edge.start = new Point(
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42 edge.getSourceOffset() + edge.source.x,
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43 edge.source.y + edge.source.height);
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44 if (auto boundary = cast(SubgraphBoundary)edge.source ) {
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45 if (boundary.getParent().head is boundary)
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46 edge.start.y = boundary.getParent().y + boundary.getParent().insets.top;
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47 }
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48 edge.end = new Point(
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49 edge.getTargetOffset() + edge.target.x,
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50 edge.target.y);
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51
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52 if (edge.vNodes !is null)
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53 routeLongEdge(edge, g);
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54 else {
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55 PointList list = new PointList();
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56 list.addPoint(edge.start);
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57 list.addPoint(edge.end);
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58 edge.setPoints(list);
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59 }
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60 }
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61 }
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62
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63 static void routeLongEdge(Edge edge, DirectedGraph g) {
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64 ShortestPathRouter router = new ShortestPathRouter();
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65 Path path = new Path(edge.start, edge.end);
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66 router.addPath(path);
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67 Rectangle o;
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68 Insets padding;
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69 for (int i = 0; i < edge.vNodes.size(); i++) {
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70 VirtualNode node = cast(VirtualNode)edge.vNodes.get(i);
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71 Node neighbor;
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72 if (node.left !is null) {
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73 neighbor = node.left;
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74 o = new Rectangle(neighbor.x, neighbor.y, neighbor.width, neighbor.height);
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75 padding = g.getPadding(neighbor);
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76 o.width += padding.right + padding.left;
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77 o.width += (edge.getPadding() * 2);
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78 o.x -= (padding.left + edge.getPadding());
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79 o.union_(o.getLocation().translate(-100000, 2));
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80 router.addObstacle(o);
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81 }
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82 if (node.right !is null) {
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83 neighbor = node.right;
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84 o = new Rectangle(neighbor.x, neighbor.y, neighbor.width, neighbor.height);
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85 padding = g.getPadding(neighbor);
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86 o.width += padding.right + padding.left;
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87 o.width += (edge.getPadding() * 2);
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88 o.x -= (padding.left + edge.getPadding());
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89 o.union_(o.getLocation().translate(100000, 2));
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90 router.addObstacle(o);
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91 }
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92 }
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93 router.setSpacing(0);
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94 router.solve();
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95 edge.setPoints(path.getPoints());
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96 }
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97
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98 }