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comparison dynamin/gui/radio_button.d @ 0:aa4efef0f0b1

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Initial commit of code.
author Jordan Miner <jminer7@gmail.com>
date Mon, 15 Jun 2009 22:10:48 -0500
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children ee9a564d2814
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1 // Written in the D programming language
2 // www.digitalmars.com/d/
3
4 /*
5 * The contents of this file are subject to the Mozilla Public License Version
6 * 1.1 (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 * http://www.mozilla.org/MPL/
9 *
10 * Software distributed under the License is distributed on an "AS IS" basis,
11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 * for the specific language governing rights and limitations under the
13 * License.
14 *
15 * The Original Code is the Dynamin library.
16 *
17 * The Initial Developer of the Original Code is Jordan Miner.
18 * Portions created by the Initial Developer are Copyright (C) 2007-2009
19 * the Initial Developer. All Rights Reserved.
20 *
21 * Contributor(s):
22 * Jordan Miner <jminer7@gmail.com>
23 *
24 */
25
26 module dynamin.gui.radio_button;
27
28 import dynamin.all_core;
29 import dynamin.all_gui;
30 import dynamin.all_painting;
31 import tango.io.Stdout;
32
33 /**
34 * A control that can be checked only if other radio buttons are unchecked.
35 *
36 * The appearance of a radio button with Windows Classic:
37 *
38 * $(IMAGE ../web/example_radio_button.png)
39 */
40 class RadioButton : CheckBox {
41 protected:
42 int _group = 1;
43 RadioButton[] collectGroup(ref int checkedIndex) {
44 Window topLevel = cast(Window)getTopLevel();
45 if(!topLevel)
46 return null;
47 RadioButton[] radios;
48 void collectFromPanel(Panel container) {
49 foreach(control; container) {
50 if(auto r = cast(RadioButton)control) {
51 if(r.group != group)
52 continue;
53 radios.length = radios.length + 1;
54 radios[$-1] = r;
55 if(r.checked)
56 checkedIndex = radios.length-1;
57 } else if(auto c = cast(Panel)control)
58 collectFromPanel(c);
59 }
60 }
61 checkedIndex = -1;
62 collectFromPanel(topLevel.content);
63 return radios;
64 }
65 override void whenKeyDown(KeyEventArgs e) {
66 // TODO: when GetTopLevel() is changed to return NativeControl,
67 // update this
68 int index;
69 RadioButton[] radios = collectGroup(index);
70 if(radios is null)
71 return;
72 if(e.key == Key.Down || e.key == Key.Right) {
73 if(++index >= radios.length)
74 index = 0;
75 } else if(e.key == Key.Up || e.key == Key.Left) {
76 if(--index < 0)
77 index = radios.length-1;
78 }
79 radios[index].clicked(new EventArgs);
80 }
81 override void whenPainting(PaintingEventArgs e) {
82 Theme.current.RadioButton_paint(this, e.graphics);
83 }
84 override void whenClicked(EventArgs e) {
85 int index;
86 RadioButton[] radios = collectGroup(index);
87 foreach(r; radios)
88 r.checked = false;
89 checked = true;
90 focus();
91
92 }
93 public:
94 this() {
95 }
96 this(string text) {
97 this();
98 this.text = text;
99 }
100 override Size bestSize() {
101 return Size(70, 15);
102 }
103 /**
104 * Gets or sets what group this radio button is a part of. The default is 1.
105 */
106 int group() { return _group; }
107 /// ditto
108 void group(int i) { _group = i; }
109 }