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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/Painter.h>
28#include <LibGUI/RadioButton.h>
29#include <LibGfx/Bitmap.h>
30#include <LibGfx/Font.h>
31#include <LibGfx/Palette.h>
32#include <LibGfx/StylePainter.h>
33
34namespace GUI {
35
36RadioButton::RadioButton(const StringView& text)
37 : AbstractButton(text)
38{
39}
40
41RadioButton::~RadioButton()
42{
43}
44
45Gfx::Size RadioButton::circle_size()
46{
47 return { 12, 12 };
48}
49
50void RadioButton::paint_event(PaintEvent& event)
51{
52 Painter painter(*this);
53 painter.add_clip_rect(event.rect());
54
55 Gfx::Rect circle_rect { { 2, 0 }, circle_size() };
56 circle_rect.center_vertically_within(rect());
57
58 Gfx::StylePainter::paint_radio_button(painter, circle_rect, palette(), is_checked(), is_being_pressed());
59
60 Gfx::Rect text_rect { circle_rect.right() + 4, 0, font().width(text()), font().glyph_height() };
61 text_rect.center_vertically_within(rect());
62 paint_text(painter, text_rect, font(), Gfx::TextAlignment::TopLeft);
63}
64
65template<typename Callback>
66void RadioButton::for_each_in_group(Callback callback)
67{
68 if (!parent())
69 return;
70 parent()->for_each_child_of_type<RadioButton>([&](auto& child) {
71 return callback(static_cast<RadioButton&>(child));
72 });
73}
74
75void RadioButton::click()
76{
77 if (!is_enabled())
78 return;
79 for_each_in_group([this](auto& button) {
80 if (&button != this)
81 button.set_checked(false);
82 return IterationDecision::Continue;
83 });
84 set_checked(true);
85}
86
87}