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1 | /** |
2 | * Jexer - Java Text User Interface | |
3 | * | |
4 | * License: LGPLv3 or later | |
5 | * | |
6 | * This module is licensed under the GNU Lesser General Public License | |
7 | * Version 3. Please see the file "COPYING" in this directory for more | |
8 | * information about the GNU Lesser General Public License Version 3. | |
9 | * | |
10 | * Copyright (C) 2015 Kevin Lamonte | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or | |
13 | * modify it under the terms of the GNU Lesser General Public License | |
14 | * as published by the Free Software Foundation; either version 3 of | |
15 | * the License, or (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, but | |
18 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
20 | * General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU Lesser General Public | |
23 | * License along with this program; if not, see | |
24 | * http://www.gnu.org/licenses/, or write to the Free Software | |
25 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
26 | * 02110-1301 USA | |
27 | * | |
28 | * @author Kevin Lamonte [kevin.lamonte@gmail.com] | |
29 | * @version 1 | |
30 | */ | |
31 | package jexer; | |
32 | ||
33 | import jexer.bits.CellAttributes; | |
34 | import jexer.bits.GraphicsChars; | |
35 | import jexer.event.TKeypressEvent; | |
36 | import jexer.event.TMouseEvent; | |
37 | import static jexer.TKeypress.*; | |
38 | ||
39 | /** | |
40 | * TCheckbox implements an on/off checkbox. | |
41 | */ | |
42 | public final class TCheckbox extends TWidget { | |
43 | ||
44 | /** | |
45 | * Checkbox state, true means checked. | |
46 | */ | |
47 | private boolean checked = false; | |
48 | ||
49 | /** | |
50 | * Label for this checkbox. | |
51 | */ | |
52 | private String label; | |
53 | ||
54 | /** | |
55 | * Public constructor. | |
56 | * | |
57 | * @param parent parent widget | |
58 | * @param x column relative to parent | |
59 | * @param y row relative to parent | |
60 | * @param label label to display next to (right of) the checkbox | |
61 | * @param checked initial check state | |
62 | */ | |
63 | public TCheckbox(final TWidget parent, final int x, final int y, | |
64 | final String label, final boolean checked) { | |
65 | ||
66 | // Set parent and window | |
67 | super(parent); | |
68 | ||
69 | setX(x); | |
70 | setY(y); | |
71 | setHeight(1); | |
72 | this.label = label; | |
73 | setWidth(label.length() + 4); | |
74 | this.checked = checked; | |
75 | ||
76 | setHasCursor(true); | |
77 | setCursorX(1); | |
78 | } | |
79 | ||
80 | /** | |
81 | * Returns true if the mouse is currently on the checkbox. | |
82 | * | |
83 | * @param mouse mouse event | |
84 | * @return true if the mouse is currently on the checkbox | |
85 | */ | |
86 | private boolean mouseOnCheckbox(final TMouseEvent mouse) { | |
00d2622b | 87 | if ((mouse.getY() == 0) |
7272e49f KL |
88 | && (mouse.getX() >= 0) |
89 | && (mouse.getX() <= 2) | |
90 | ) { | |
91 | return true; | |
92 | } | |
93 | return false; | |
94 | } | |
95 | ||
96 | /** | |
97 | * Draw a checkbox with label. | |
98 | */ | |
99 | @Override | |
100 | public void draw() { | |
101 | CellAttributes checkboxColor; | |
102 | ||
103 | if (getAbsoluteActive()) { | |
104 | checkboxColor = getTheme().getColor("tcheckbox.active"); | |
105 | } else { | |
106 | checkboxColor = getTheme().getColor("tcheckbox.inactive"); | |
107 | } | |
108 | ||
109 | getScreen().putCharXY(0, 0, '[', checkboxColor); | |
110 | if (checked) { | |
111 | getScreen().putCharXY(1, 0, GraphicsChars.CHECK, checkboxColor); | |
112 | } else { | |
113 | getScreen().putCharXY(1, 0, ' ', checkboxColor); | |
114 | } | |
115 | getScreen().putCharXY(2, 0, ']', checkboxColor); | |
116 | getScreen().putStrXY(4, 0, label, checkboxColor); | |
117 | } | |
118 | ||
119 | /** | |
120 | * Handle mouse checkbox presses. | |
121 | * | |
122 | * @param mouse mouse button down event | |
123 | */ | |
124 | @Override | |
125 | public void onMouseDown(final TMouseEvent mouse) { | |
126 | if ((mouseOnCheckbox(mouse)) && (mouse.getMouse1())) { | |
127 | // Switch state | |
128 | checked = !checked; | |
129 | } | |
130 | } | |
131 | ||
132 | /** | |
133 | * Handle keystrokes. | |
134 | * | |
135 | * @param keypress keystroke event | |
136 | */ | |
137 | @Override | |
138 | public void onKeypress(final TKeypressEvent keypress) { | |
139 | if (keypress.equals(kbSpace)) { | |
140 | checked = !checked; | |
141 | return; | |
142 | } | |
143 | ||
144 | // Pass to parent for the things we don't care about. | |
145 | super.onKeypress(keypress); | |
146 | } | |
147 | ||
148 | } |