Mercurial > projects > dwt-addons

annotate dwtx/draw2d/EllipseAnchor.d @ 192:c3583c6ec027

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added missing default cases for switch statements
author Frank Benoit <benoit@tionex.de>
date Mon, 03 Nov 2008 22:52:26 +0100
parents 95307ad235d9
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
98
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
1 /*******************************************************************************
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
2 * Copyright (c) 2000, 2005 IBM Corporation and others.
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
3 * All rights reserved. This program and the accompanying materials
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
4 * are made available under the terms of the Eclipse Public License v1.0
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
5 * which accompanies this distribution, and is available at
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
6 * http://www.eclipse.org/legal/epl-v10.html
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
7 *
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
8 * Contributors:
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
9 * IBM Corporation - initial API and implementation
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
10 * Port to the D programming language:
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
11 * Frank Benoit <benoit@tionex.de>
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
12 *******************************************************************************/
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
13 module dwtx.draw2d.EllipseAnchor;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
14
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
15 import dwt.dwthelper.utils;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
16
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
17 import dwtx.draw2d.geometry.Point;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
18 import dwtx.draw2d.geometry.Rectangle;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
19 import dwtx.draw2d.AbstractConnectionAnchor;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
20 import dwtx.draw2d.IFigure;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
21
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
22 /**
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
23 * Similar to a {@link dwtx.draw2d.ChopboxAnchor}, except this anchor is located on
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
24 * the ellipse defined by the owners bounding box.
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
25 * @author Alex Selkov
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
26 * Created 31.08.2002 23:11:43
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
27 */
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
28 public class EllipseAnchor : AbstractConnectionAnchor {
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
29
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
30 /**
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
31 * @see dwtx.draw2d.AbstractConnectionAnchor#AbstractConnectionAnchor()
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
32 */
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
33 public this() { }
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
34
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
35 /**
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
36 * @see dwtx.draw2d.AbstractConnectionAnchor#AbstractConnectionAnchor(IFigure)
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
37 */
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
38 public this(IFigure owner) {
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
39 super(owner);
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
40 }
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
41
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
42 /**
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
43 * Returns a point on the ellipse (defined by the owner's bounding box) where the
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
44 * connection should be anchored.
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
45 * @see dwtx.draw2d.ConnectionAnchor#getLocation(Point)
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
46 */
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
47 public Point getLocation(Point reference) {
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
48 Rectangle r = Rectangle.SINGLETON;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
49 r.setBounds(getOwner().getBounds());
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
50 r.translate(-1, -1);
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
51 r.resize(1, 1);
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
52 getOwner().translateToAbsolute(r);
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
53
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
54 Point ref_ = r.getCenter().negate().translate(reference);
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
55
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
56 if (ref_.x is 0)
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
57 return new Point(reference.x, (ref_.y > 0) ? r.bottom() : r.y);
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
58 if (ref_.y is 0)
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
59 return new Point((ref_.x > 0) ? r.right() : r.x, reference.y);
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
60
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
61 float dx = (ref_.x > 0) ? 0.5f : -0.5f;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
62 float dy = (ref_.y > 0) ? 0.5f : -0.5f;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
63
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
64 // ref.x, ref.y, r.width, r.height !is 0 => safe to proceed
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
65
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
66 float k = cast(float)(ref_.y * r.width) / (ref_.x * r.height);
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
67 k = k * k;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
68
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
69 return r.getCenter().translate(cast(int)(r.width * dx / Math.sqrt(1 + k)),
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
70 cast(int)(r.height * dy / Math.sqrt(1 + 1 / k)));
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
71 }
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
72 }