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comparison dwtx/draw2d/Ellipse.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 * Alex Selkov - Fix for Bug# 22701
11 * Port to the D programming language:
12 * Frank Benoit <benoit@tionex.de>
13 *******************************************************************************/
14 module dwtx.draw2d.Ellipse;
15
16 import dwt.dwthelper.utils;
17
18 import dwtx.draw2d.geometry.Rectangle;
19 import dwtx.draw2d.Shape;
20 import dwtx.draw2d.Graphics;
21
22 /**
23 * An figure that draws an ellipse filling its bounds.
24 */
25 public class Ellipse
26 : Shape
27 {
28
29 /**
30 * Constructs a new Ellipse with the default values of a Shape.
31 * @since 2.0
32 */
33 public this() { }
34
35 /**
36 * Returns <code>true</code> if the given point (x,y) is contained within this ellipse.
37 * @param x the x coordinate
38 * @param y the y coordinate
39 * @return <code>true</code>if the given point is contained
40 */
41 public bool containsPoint(int x, int y) {
42 if (!super.containsPoint(x, y))
43 return false;
44 Rectangle r = getBounds();
45 long ux = x - r.x - r.width / 2;
46 long uy = y - r.y - r.height / 2;
47 return ((ux * ux) << 10) / (r.width * r.width)
48 + ((uy * uy) << 10) / (r.height * r.height) <= 256;
49 }
50
51 /**
52 * Fills the ellipse.
53 * @see dwtx.draw2d.Shape#fillShape(dwtx.draw2d.Graphics)
54 */
55 protected void fillShape(Graphics graphics) {
56 graphics.fillOval(getBounds());
57 }
58
59 /**
60 * Outlines the ellipse.
61 * @see dwtx.draw2d.Shape#outlineShape(dwtx.draw2d.Graphics)
62 */
63 protected void outlineShape(Graphics graphics) {
64 Rectangle r = Rectangle.SINGLETON;
65 r.setBounds(getBounds());
66 r.width--;
67 r.height--;
68 r.shrink((lineWidth - 1) / 2, (lineWidth - 1) / 2);
69 graphics.drawOval(r);
70 }
71
72 }