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comparison dwtx/draw2d/ArrowLocator.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.ArrowLocator;
14
15 import dwt.dwthelper.utils;
16
17 import dwtx.draw2d.geometry.PointList;
18 import dwtx.draw2d.ConnectionLocator;
19 import dwtx.draw2d.IFigure;
20 import dwtx.draw2d.Connection;
21 import dwtx.draw2d.RotatableDecoration;
22
23 /**
24 * Locator used to place a {@link RotatableDecoration} on a {@link Connection}. The
25 * decoration can be placed at the source or target end of the connection figure. The
26 * default connection implementation uses a {@link DelegatingLayout} which requires
27 * locators.
28 */
29 public class ArrowLocator : ConnectionLocator {
30
31 /**
32 * Constructs an ArrowLocator associated with passed connection and tip location (either
33 * {@link ConnectionLocator#SOURCE} or {@link ConnectionLocator#TARGET}).
34 *
35 * @param connection The connection associated with the locator
36 * @param location Location of the arrow decoration
37 * @since 2.0
38 */
39 public this(Connection connection, int location) {
40 super(connection, location);
41 }
42
43 /**
44 * Relocates the passed in figure (which must be a {@link RotatableDecoration}) at either
45 * the start or end of the connection.
46 * @param target The RotatableDecoration to relocate
47 */
48 public void relocate(IFigure target) {
49 PointList points = getConnection().getPoints();
50 RotatableDecoration arrow = cast(RotatableDecoration)target;
51 arrow.setLocation(getLocation(points));
52
53 if (getAlignment() is SOURCE)
54 arrow.setReferencePoint(points.getPoint(1));
55 else if (getAlignment() is TARGET)
56 arrow.setReferencePoint(points.getPoint(points.size() - 2));
57 }
58
59 }