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annotate dwtx/draw2d/BendpointConnectionRouter.d @ 172:d994a8b2cdf7

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again compile fixes
author Frank Benoit <benoit@tionex.de>
date Wed, 10 Sep 2008 23:14:02 +0200
parents 2d6540440fe6
children
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 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.BendpointConnectionRouter;
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14
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15 import dwt.dwthelper.utils;
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16 import dwtx.dwtxhelper.Collection;
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17
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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.PrecisionPoint;
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21 import dwtx.draw2d.AbstractRouter;
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22 import dwtx.draw2d.Connection;
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23 import dwtx.draw2d.Bendpoint;
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24
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25 /**
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26 * Routes {@link Connection}s through a <code>List</code> of {@link Bendpoint Bendpoints}.
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27 */
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28 public class BendpointConnectionRouter
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29 : AbstractRouter
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30 {
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31
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32 private Map constraints;
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33
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34 private static PrecisionPoint A_POINT_;
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35 private static PrecisionPoint A_POINT(){
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36 if( A_POINT_ is null ){
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37 synchronized( BendpointConnectionRouter.classinfo ){
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38 if( A_POINT_ is null ){
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39 A_POINT_ = new PrecisionPoint();
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40 }
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41 }
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42 }
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43 return A_POINT_;
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44 }
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45
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46 public this(){
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47 constraints = new HashMap(11);
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48 }
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49
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50 /**
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51 * Gets the constraint for the given {@link Connection}.
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52 *
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53 * @param connection The connection whose constraint we are retrieving
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54 * @return The constraint
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55 */
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56 public Object getConstraint(Connection connection) {
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57 return constraints.get(cast(Object)connection);
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58 }
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59
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60 /**
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61 * Removes the given connection from the map of constraints.
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62 *
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63 * @param connection The connection to remove
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64 */
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65 public void remove(Connection connection) {
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66 constraints.remove(cast(Object)connection);
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67 }
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68
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69 /**
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70 * Routes the {@link Connection}. Expects the constraint to be a List
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71 * of {@link dwtx.draw2d.Bendpoint Bendpoints}.
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72 *
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73 * @param conn The connection to route
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74 */
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75 public void route(Connection conn) {
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76 PointList points = conn.getPoints();
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77 points.removeAllPoints();
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78
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79 List bendpoints = cast(List)getConstraint(conn);
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80 if (bendpoints is null)
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81 bendpoints = Collections.EMPTY_LIST;
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82
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83 Point ref1, ref2;
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84
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85 if (bendpoints.isEmpty()) {
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86 ref1 = conn.getTargetAnchor().getReferencePoint();
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87 ref2 = conn.getSourceAnchor().getReferencePoint();
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88 } else {
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89 ref1 = new Point((cast(Bendpoint)bendpoints.get(0)).getLocation());
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90 conn.translateToAbsolute(ref1);
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91 ref2 = new Point((cast(Bendpoint)bendpoints.get(bendpoints.size() - 1)).getLocation());
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92 conn.translateToAbsolute(ref2);
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93 }
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94
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95 A_POINT.setLocation(conn.getSourceAnchor().getLocation(ref1));
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96 conn.translateToRelative(A_POINT);
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97 points.addPoint(A_POINT);
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98
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99 for (int i = 0; i < bendpoints.size(); i++) {
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100 Bendpoint bp = cast(Bendpoint)bendpoints.get(i);
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101 points.addPoint(bp.getLocation());
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102 }
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103
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104 A_POINT.setLocation(conn.getTargetAnchor().getLocation(ref2));
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105 conn.translateToRelative(A_POINT);
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106 points.addPoint(A_POINT);
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107 conn.setPoints(points);
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108 }
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109
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110 /**
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111 * Sets the constraint for the given {@link Connection}.
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112 *
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113 * @param connection The connection whose constraint we are setting
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114 * @param constraint The constraint
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115 */
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116 public void setConstraint(Connection connection, Object constraint) {
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117 constraints.put(cast(Object)connection, constraint);
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118 }
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119
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120 }