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annotate dwtx/draw2d/ConnectionLayer.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) 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.ConnectionLayer;
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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 dwt.DWT;
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18 import dwtx.draw2d.FreeformLayer;
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19 import dwtx.draw2d.IFigure;
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20 import dwtx.draw2d.Graphics;
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21 import dwtx.draw2d.ConnectionRouter;
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22 import dwtx.draw2d.Connection;
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23
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24 /**
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25 * Layer designed specifically to handle the presence of connections. This is done due to
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26 * the necessity of having a router for the connections added.
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27 */
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28 public class ConnectionLayer
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29 : FreeformLayer
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30 {
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31
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32 int antialias = DWT.DEFAULT;
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33
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34 /**
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35 * The ConnectionRouter used to route all connections on this layer.
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36 */
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37 protected ConnectionRouter connectionRouter;
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38
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39 /**
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40 * Adds the given figure with the given contraint at the given index. If the figure is a
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41 * {@link Connection}, its {@link ConnectionRouter} is set.
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42 *
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43 * @param figure Figure being added
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44 * @param constraint Constraint of the figure being added
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45 * @param index Index where the figure is to be added
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46 * @since 2.0
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47 */
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48 public void add(IFigure figure, Object constraint, int index) {
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49 super.add(figure, constraint, index);
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50
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51 // If the connection layout manager is set, then every
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52 // figure added should use this layout manager.
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53 if (null !is cast(Connection )figure && getConnectionRouter() !is null)
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54 (cast(Connection)figure).setConnectionRouter(getConnectionRouter());
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55 }
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56
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57 /**
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58 * Returns the ConnectionRouter being used by this layer.
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59 *
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60 * @return ConnectionRouter being used by this layer
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61 * @since 2.0
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62 */
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63 public ConnectionRouter getConnectionRouter() {
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64 return connectionRouter;
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65 }
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66
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67 /**
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68 * @see IFigure#paint(Graphics)
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69 */
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70 public void paint(Graphics graphics) {
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71 if (antialias !is DWT.DEFAULT)
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72 graphics.setAntialias(antialias);
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73 super.paint(graphics);
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74 }
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75
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76 /**
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77 * Removes the figure from this Layer. If the figure is a {@link Connection}, that
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78 * Connection's {@link ConnectionRouter} is set to <code>null</code>.
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79 *
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80 * @param figure The figure to remove
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81 */
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82 public void remove(IFigure figure) {
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83 if ( auto f = cast(Connection)figure )
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84 f.setConnectionRouter(null);
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85 super.remove(figure);
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86 }
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87
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88 /**
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89 * Sets the ConnectionRouter for this layer. This router is set as the ConnectionRouter
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90 * for all the child connections of this Layer.
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91 *
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92 * @param router The ConnectionRouter to set for this Layer
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93 * @since 2.0
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94 */
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95 public void setConnectionRouter(ConnectionRouter router) {
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96 connectionRouter = router;
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97 FigureIterator iter = new FigureIterator(this);
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98 IFigure figure;
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99 while (iter.hasNext()) {
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100 figure = iter.nextFigure();
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101 if ( auto f = cast(Connection)figure )
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102 f.setConnectionRouter(router);
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103 }
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104 }
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105
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106 /**
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107 * Sets whether antialiasing should be enabled for the connection layer. If this value is
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108 * set to something other than {@link DWT#DEFAULT}, {@link Graphics#setAntialias(int)}
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109 * will be called with the given value when painting this layer.
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110 * @param antialias the antialias setting
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111 * @since 3.1
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112 */
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113 public void setAntialias(int antialias) {
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114 this.antialias = antialias;
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115 }
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116
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117 }