Mercurial > projects > dwt2
comparison org.eclipse.ui.forms/src/org/eclipse/ui/forms/widgets/Twistie.d @ 12:bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
author | Frank Benoit <benoit@tionex.de> |
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date | Sat, 14 Mar 2009 18:23:29 +0100 |
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11:43904fec5dca | 12:bc29606a740c |
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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 org.eclipse.ui.forms.widgets.Twistie; | |
14 | |
15 import org.eclipse.ui.forms.widgets.ToggleHyperlink; | |
16 | |
17 import org.eclipse.swt.SWT; | |
18 import org.eclipse.swt.graphics.Color; | |
19 import org.eclipse.swt.graphics.GC; | |
20 import org.eclipse.swt.graphics.Point; | |
21 import org.eclipse.swt.widgets.Composite; | |
22 | |
23 import java.lang.all; | |
24 import java.util.Set; | |
25 | |
26 /** | |
27 * A custom selectable control that can be used to control areas that can be | |
28 * expanded or collapsed. The control control can be toggled between selected | |
29 * and deselected state with a mouse or by pressing 'Enter' while the control | |
30 * has focus. | |
31 * <p> | |
32 * The control is rendered as a triangle that points to the right in the | |
33 * collapsed and down in the expanded state. Triangle color can be changed. | |
34 * | |
35 * @see TreeNode | |
36 * @since 3.0 | |
37 */ | |
38 public class Twistie : ToggleHyperlink { | |
39 private static const int[] onPoints = [ 0, 2, 8, 2, 4, 6 ]; | |
40 | |
41 private static const int[] offPoints = [ 2, -1, 2, 8, 6, 4 ]; | |
42 | |
43 /** | |
44 * Creates a control in a provided composite. | |
45 * | |
46 * @param parent | |
47 * the parent | |
48 * @param style | |
49 * the style | |
50 */ | |
51 public this(Composite parent, int style) { | |
52 super(parent, style); | |
53 innerWidth = 9; | |
54 innerHeight = 9; | |
55 } | |
56 | |
57 /* | |
58 * @see SelectableControl#paint(GC) | |
59 */ | |
60 protected void paintHyperlink(GC gc) { | |
61 Color bg; | |
62 if (!isEnabled()) | |
63 bg = getDisplay().getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW); | |
64 else if (hover && getHoverDecorationColor() !is null) | |
65 bg = getHoverDecorationColor(); | |
66 else if (getDecorationColor() !is null) | |
67 bg = getDecorationColor(); | |
68 else | |
69 bg = getForeground(); | |
70 gc.setBackground(bg); | |
71 int[] data; | |
72 Point size = getSize(); | |
73 int x = (size.x - 9) / 2; | |
74 int y = (size.y - 9) / 2; | |
75 if (isExpanded()) | |
76 data = translate(onPoints, x, y); | |
77 else | |
78 data = translate(offPoints, x, y); | |
79 gc.fillPolygon(data); | |
80 gc.setBackground(getBackground()); | |
81 } | |
82 | |
83 private int[] translate(int[] data, int x, int y) { | |
84 int[] target = new int[data.length]; | |
85 for (int i = 0; i < data.length; i += 2) { | |
86 target[i] = data[i] + x; | |
87 } | |
88 for (int i = 1; i < data.length; i += 2) { | |
89 target[i] = data[i] + y; | |
90 } | |
91 return target; | |
92 } | |
93 | |
94 /* | |
95 * (non-Javadoc) | |
96 * | |
97 * @see org.eclipse.swt.widgets.Control#setEnabled(bool) | |
98 */ | |
99 public void setEnabled(bool enabled) { | |
100 super.setEnabled(enabled); | |
101 redraw(); | |
102 } | |
103 } |