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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <LibGUI/Button.h>
28#include <LibGUI/SpinBox.h>
29#include <LibGUI/TextBox.h>
30
31namespace GUI {
32
33SpinBox::SpinBox()
34{
35 m_editor = add<TextBox>();
36 m_editor->set_text("0");
37 m_editor->on_change = [this] {
38 bool ok;
39 int value = m_editor->text().to_uint(ok);
40 if (ok)
41 set_value(value);
42 else
43 m_editor->set_text(String::number(m_value));
44 };
45 m_increment_button = add<Button>();
46 m_increment_button->set_focusable(false);
47 m_increment_button->set_text("\xc3\xb6");
48 m_increment_button->on_click = [this](auto&) { set_value(m_value + 1); };
49 m_increment_button->set_auto_repeat_interval(150);
50 m_decrement_button = add<Button>();
51 m_decrement_button->set_focusable(false);
52 m_decrement_button->set_text("\xc3\xb7");
53 m_decrement_button->on_click = [this](auto&) { set_value(m_value - 1); };
54 m_decrement_button->set_auto_repeat_interval(150);
55}
56
57SpinBox::~SpinBox()
58{
59}
60
61void SpinBox::set_value(int value)
62{
63 value = clamp(value, m_min, m_max);
64 if (m_value == value)
65 return;
66 m_value = value;
67 m_editor->set_text(String::number(value));
68 update();
69 if (on_change)
70 on_change(value);
71}
72
73void SpinBox::set_range(int min, int max)
74{
75 ASSERT(min <= max);
76 if (m_min == min && m_max == max)
77 return;
78
79 m_min = min;
80 m_max = max;
81
82 int old_value = m_value;
83 m_value = clamp(m_value, m_min, m_max);
84 if (on_change && m_value != old_value)
85 on_change(m_value);
86
87 update();
88}
89
90void SpinBox::keydown_event(KeyEvent& event)
91{
92 if (event.key() == KeyCode::Key_Up) {
93 set_value(m_value + 1);
94 return;
95 }
96 if (event.key() == KeyCode::Key_Down) {
97 set_value(m_value - 1);
98 return;
99 }
100
101 event.ignore();
102}
103
104void SpinBox::mousewheel_event(MouseEvent& event)
105{
106 set_value(m_value - event.wheel_delta());
107}
108
109void SpinBox::resize_event(ResizeEvent& event)
110{
111 int frame_thickness = m_editor->frame_thickness();
112 int button_height = (event.size().height() / 2) - frame_thickness;
113 int button_width = 15;
114 m_increment_button->set_relative_rect(width() - button_width - frame_thickness, frame_thickness, button_width, button_height);
115 m_decrement_button->set_relative_rect(width() - button_width - frame_thickness, frame_thickness + button_height, button_width, button_height);
116 m_editor->set_relative_rect(0, 0, width(), height());
117}
118
119}