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comparison 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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96:b492ba44e44d 98:95307ad235d9
1 /*******************************************************************************
2 * Copyright (c) 2000, 2005 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 * Port to the D programming language:
11 * Frank Benoit <benoit@tionex.de>
12 *******************************************************************************/
13 module dwtx.draw2d.ConnectionLayer;
14
15 import dwt.dwthelper.utils;
16
17 import dwt.DWT;
18 import dwtx.draw2d.FreeformLayer;
19 import dwtx.draw2d.IFigure;
20 import dwtx.draw2d.Graphics;
21 import dwtx.draw2d.ConnectionRouter;
22 import dwtx.draw2d.Connection;
23
24 /**
25 * Layer designed specifically to handle the presence of connections. This is done due to
26 * the necessity of having a router for the connections added.
27 */
28 public class ConnectionLayer
29 : FreeformLayer
30 {
31
32 int antialias = DWT.DEFAULT;
33
34 /**
35 * The ConnectionRouter used to route all connections on this layer.
36 */
37 protected ConnectionRouter connectionRouter;
38
39 /**
40 * Adds the given figure with the given contraint at the given index. If the figure is a
41 * {@link Connection}, its {@link ConnectionRouter} is set.
42 *
43 * @param figure Figure being added
44 * @param constraint Constraint of the figure being added
45 * @param index Index where the figure is to be added
46 * @since 2.0
47 */
48 public void add(IFigure figure, Object constraint, int index) {
49 super.add(figure, constraint, index);
50
51 // If the connection layout manager is set, then every
52 // figure added should use this layout manager.
53 if (null !is cast(Connection )figure && getConnectionRouter() !is null)
54 (cast(Connection)figure).setConnectionRouter(getConnectionRouter());
55 }
56
57 /**
58 * Returns the ConnectionRouter being used by this layer.
59 *
60 * @return ConnectionRouter being used by this layer
61 * @since 2.0
62 */
63 public ConnectionRouter getConnectionRouter() {
64 return connectionRouter;
65 }
66
67 /**
68 * @see IFigure#paint(Graphics)
69 */
70 public void paint(Graphics graphics) {
71 if (antialias !is DWT.DEFAULT)
72 graphics.setAntialias(antialias);
73 super.paint(graphics);
74 }
75
76 /**
77 * Removes the figure from this Layer. If the figure is a {@link Connection}, that
78 * Connection's {@link ConnectionRouter} is set to <code>null</code>.
79 *
80 * @param figure The figure to remove
81 */
82 public void remove(IFigure figure) {
83 if ( auto f = cast(Connection)figure )
84 f.setConnectionRouter(null);
85 super.remove(figure);
86 }
87
88 /**
89 * Sets the ConnectionRouter for this layer. This router is set as the ConnectionRouter
90 * for all the child connections of this Layer.
91 *
92 * @param router The ConnectionRouter to set for this Layer
93 * @since 2.0
94 */
95 public void setConnectionRouter(ConnectionRouter router) {
96 connectionRouter = router;
97 FigureIterator iter = new FigureIterator(this);
98 IFigure figure;
99 while (iter.hasNext()) {
100 figure = iter.nextFigure();
101 if ( auto f = cast(Connection)figure )
102 f.setConnectionRouter(router);
103 }
104 }
105
106 /**
107 * Sets whether antialiasing should be enabled for the connection layer. If this value is
108 * set to something other than {@link DWT#DEFAULT}, {@link Graphics#setAntialias(int)}
109 * will be called with the given value when painting this layer.
110 * @param antialias the antialias setting
111 * @since 3.1
112 */
113 public void setAntialias(int antialias) {
114 this.antialias = antialias;
115 }
116
117 }