|
1
|
/*******************************************************************************
|
|
2
|
* Copyright (c) 2000, 2010 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
|
*******************************************************************************/
|
|
12
|
package org.eclipse.draw2d;
|
|
13
|
|
|
14
|
import org.eclipse.draw2d.geometry.Rectangle;
|
|
15
|
|
|
16
|
/**
|
|
17
|
* An figure that draws an ellipse filling its bounds.
|
|
18
|
*/
|
|
19
|
public class Ellipse extends Shape {
|
|
20
|
/**
|
|
21
|
* Constructs a new Ellipse with the default values of a Shape.
|
|
22
|
*
|
|
23
|
* @since 2.0
|
|
24
|
*/
|
|
25
|
public Ellipse() {
|
|
26
|
}
|
|
27
|
|
|
28
|
/**
|
|
29
|
* Returns <code>true</code> if the given point (x,y) is contained within
|
|
30
|
* this ellipse.
|
|
31
|
*
|
|
32
|
* @param x
|
|
33
|
* the x coordinate
|
|
34
|
* @param y
|
|
35
|
* the y coordinate
|
|
36
|
* @return <code>true</code>if the given point is contained
|
|
37
|
*/
|
|
38
|
public boolean containsPoint(int x, int y) {
|
|
39
|
if (!super.containsPoint(x, y)) {
|
|
40
|
return false;
|
|
41
|
} else {
|
|
42
|
Rectangle r = getBounds();
|
|
43
|
long ux = x - r.x - r.width / 2;
|
|
44
|
long uy = y - r.y - r.height / 2;
|
|
45
|
return ((ux * ux) << 10) / (r.width * r.width) + ((uy * uy) << 10)
|
|
46
|
/ (r.height * r.height) <= 256;
|
|
47
|
}
|
|
48
|
}
|
|
49
|
|
|
50
|
/**
|
|
51
|
* Fills the ellipse.
|
|
52
|
*
|
|
53
|
* @see org.eclipse.draw2d.Shape#fillShape(org.eclipse.draw2d.Graphics)
|
|
54
|
*/
|
|
55
|
protected void fillShape(Graphics graphics) {
|
|
56
|
graphics.fillOval(getBounds());
|
|
57
|
}
|
|
58
|
|
|
59
|
/**
|
|
60
|
* Outlines the ellipse.
|
|
61
|
*
|
|
62
|
* @see org.eclipse.draw2d.Shape#outlineShape(org.eclipse.draw2d.Graphics)
|
|
63
|
*/
|
|
64
|
protected void outlineShape(Graphics graphics) {
|
|
65
|
float lineInset = Math.max(1.0f, getLineWidthFloat()) / 2.0f;
|
|
66
|
int inset1 = (int) Math.floor(lineInset);
|
|
67
|
int inset2 = (int) Math.ceil(lineInset);
|
|
68
|
|
|
69
|
Rectangle r = Rectangle.SINGLETON.setBounds(getBounds());
|
|
70
|
r.x += inset1;
|
|
71
|
r.y += inset1;
|
|
72
|
r.width -= inset1 + inset2;
|
|
73
|
r.height -= inset1 + inset2;
|
|
74
|
|
|
75
|
graphics.drawOval(r);
|
|
76
|
}
|
|
77
|
}
|