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annotate dwtx/draw2d/graph/VirtualNode.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, 2008 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.VirtualNode;
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14
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15 import dwt.dwthelper.utils;
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16 import tango.text.convert.Format;
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17
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18 import dwtx.draw2d.geometry.Insets;
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19 import dwtx.draw2d.graph.Node;
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20 import dwtx.draw2d.graph.Edge;
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21 import dwtx.draw2d.graph.Subgraph;
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22
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23 /**
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24 * @deprecated virtual nodes of an edge should be cast to Node.
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25 * @author Randy Hudson
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26 * @since 2.1.2
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27 */
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28 public class VirtualNode : Node {
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29
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30 /**
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31 * The next node.
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32 */
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33 public Node next;
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34
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35 /**
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36 * The previous node.
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37 */
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38 public Node prev;
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39
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40 /**
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41 * Constructs a virtual node.
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42 * @deprecated This class is for internal use only.
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43 * @param e the edge
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44 * @param i the row
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45 */
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46 public this(Edge e, int i) {
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47 super(e);
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48 incoming.add(e);
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49 outgoing.add(e);
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50 width = e.width;
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51 height = 0;
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52 rank = i;
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53 setPadding(new Insets(0, e.padding, 0, e.padding));
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54 }
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55
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56 /**
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57 * Constructor.
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58 * @param o object
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59 * @param parent subgraph
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60 */
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61 public this(Object o, Subgraph parent) {
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62 super(o, parent);
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63 }
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64
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65 /**
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66 * Returns the index of {@link #prev}.
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67 * @return median
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68 */
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69 public double medianIncoming() {
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70 return prev.index;
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71 }
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72
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73 /**
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74 * Returns the index of {@link #next}.
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75 * @return outgoing
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76 */
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77 public double medianOutgoing() {
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78 return next.index;
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79 }
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80
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81 /**
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82 * For internal use only. Returns the original edge weight multiplied by the omega value
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83 * for the this node and the node on the previous rank.
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84 * @return the weighted weight, or omega
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85 */
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86 public int omega() {
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87 Edge e = cast(Edge)data;
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88 if (e.source.rank + 1 < rank && rank < e.target.rank)
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89 return 8 * e.weight;
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90 return 2 * e.weight;
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91 }
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92
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93 /**
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94 * @see java.lang.Object#toString()
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95 */
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96 public String toString() {
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97 if (auto edge = cast(Edge)data )
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98 return Format("VN[{}]({})", (edge.vNodes.indexOf(this) + 1) //$NON-NLS-1$
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99 , data ); //$NON-NLS-1$ //$NON-NLS-2$
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100 return super.toString();
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101 }
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102
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103 }