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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * Copyright (c) 2021, kleines Filmröllchen <filmroellchen@serenityos.org>
4 * Copyright (c) 2021, David Isaksson <davidisaksson93@gmail.com>
5 * Copyright (c) 2022, the SerenityOS developers.
6 *
7 * SPDX-License-Identifier: BSD-2-Clause
8 */
9
10#include <AK/Array.h>
11#include <LibAudio/ConnectionToServer.h>
12#include <LibConfig/Client.h>
13#include <LibCore/System.h>
14#include <LibGUI/Application.h>
15#include <LibGUI/BoxLayout.h>
16#include <LibGUI/CheckBox.h>
17#include <LibGUI/Frame.h>
18#include <LibGUI/Painter.h>
19#include <LibGUI/Slider.h>
20#include <LibGUI/Widget.h>
21#include <LibGUI/Window.h>
22#include <LibGfx/Bitmap.h>
23#include <LibGfx/Font/FontDatabase.h>
24#include <LibGfx/Palette.h>
25#include <LibMain/Main.h>
26
27class AudioWidget final : public GUI::Widget {
28 C_OBJECT_ABSTRACT(AudioWidget)
29
30private:
31 struct VolumeBitmapPair {
32 int volume_threshold { 0 };
33 NonnullRefPtr<Gfx::Bitmap> bitmap;
34 };
35
36public:
37 static ErrorOr<NonnullRefPtr<AudioWidget>> try_create()
38 {
39 Array<VolumeBitmapPair, 5> volume_level_bitmaps = {
40 { { 66, TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/audio-volume-high.png"sv)) },
41 { 33, TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/audio-volume-medium.png"sv)) },
42 { 1, TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/audio-volume-low.png"sv)) },
43 { 0, TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/audio-volume-zero.png"sv)) },
44 { 0, TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/audio-volume-muted.png"sv)) } }
45 };
46 auto audio_client = TRY(Audio::ConnectionToServer::try_create());
47 NonnullRefPtr<AudioWidget> audio_widget = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) AudioWidget(move(audio_client), move(volume_level_bitmaps))));
48 TRY(audio_widget->try_initialize_graphical_elements());
49 return audio_widget;
50 }
51
52private:
53 AudioWidget(NonnullRefPtr<Audio::ConnectionToServer> audio_client, Array<VolumeBitmapPair, 5> volume_level_bitmaps)
54 : m_audio_client(move(audio_client))
55 , m_volume_level_bitmaps(move(volume_level_bitmaps))
56 , m_show_percent(Config::read_bool("AudioApplet"sv, "Applet"sv, "ShowPercent"sv, false))
57 {
58 m_audio_volume = static_cast<int>(m_audio_client->get_main_mix_volume() * 100);
59 m_audio_muted = m_audio_client->is_main_mix_muted();
60
61 m_audio_client->on_main_mix_muted_state_change = [this](bool muted) {
62 if (m_audio_muted == muted)
63 return;
64 m_mute_box->set_checked(!m_audio_muted);
65 m_slider->set_enabled(!muted);
66 m_audio_muted = muted;
67 update();
68 };
69
70 m_audio_client->on_main_mix_volume_change = [this](double volume) {
71 m_audio_volume = static_cast<int>(round(volume * 100));
72 m_slider->set_value(m_slider->max() - m_audio_volume, GUI::AllowCallback::No);
73 if (!m_audio_muted)
74 update();
75 };
76 }
77
78 ErrorOr<void> try_initialize_graphical_elements()
79 {
80 m_slider_window = add<GUI::Window>(window());
81 m_slider_window->set_window_type(GUI::WindowType::Popup);
82
83 m_root_container = TRY(m_slider_window->set_main_widget<GUI::Frame>());
84 m_root_container->set_fill_with_background_color(true);
85 m_root_container->set_layout<GUI::VerticalBoxLayout>(4, 0);
86 m_root_container->set_frame_shape(Gfx::FrameShape::Window);
87
88 m_percent_box = m_root_container->add<GUI::CheckBox>("\xE2\x84\xB9"_short_string);
89 m_percent_box->set_tooltip(m_show_percent ? "Hide percent" : "Show percent");
90 m_percent_box->set_checked(m_show_percent);
91 m_percent_box->on_checked = [&](bool show_percent) {
92 m_show_percent = show_percent;
93 set_audio_widget_size(m_show_percent);
94 m_percent_box->set_tooltip(m_show_percent ? "Hide percent" : "Show percent");
95 GUI::Application::the()->hide_tooltip();
96
97 Config::write_bool("AudioApplet"sv, "Applet"sv, "ShowPercent"sv, m_show_percent);
98 };
99
100 m_slider = m_root_container->add<GUI::VerticalSlider>();
101 m_slider->set_max(100);
102 m_slider->set_page_step(5);
103 m_slider->set_step(5);
104 m_slider->set_value(m_slider->max() - m_audio_volume);
105 m_slider->set_knob_size_mode(GUI::Slider::KnobSizeMode::Proportional);
106 m_slider->on_change = [&](int value) {
107 m_audio_volume = m_slider->max() - value;
108 double volume = clamp(static_cast<double>(m_audio_volume) / m_slider->max(), 0.0, 1.0);
109 m_audio_client->set_main_mix_volume(volume);
110 update();
111 };
112
113 m_mute_box = m_root_container->add<GUI::CheckBox>("\xE2\x9D\x8C"_short_string);
114 m_mute_box->set_checked(m_audio_muted);
115 m_mute_box->set_tooltip(m_audio_muted ? "Unmute" : "Mute");
116 m_mute_box->on_checked = [&](bool is_muted) {
117 m_mute_box->set_tooltip(is_muted ? "Unmute" : "Mute");
118 m_audio_client->set_main_mix_muted(is_muted);
119 GUI::Application::the()->hide_tooltip();
120 };
121
122 return {};
123 };
124
125public:
126 virtual ~AudioWidget() override = default;
127
128 void set_audio_widget_size(bool show_percent)
129 {
130 if (show_percent)
131 window()->resize(44, 16);
132 else
133 window()->resize(16, 16);
134 }
135
136private:
137 virtual void mousedown_event(GUI::MouseEvent& event) override
138 {
139 if (event.button() == GUI::MouseButton::Primary) {
140 if (!m_slider_window->is_visible())
141 open();
142 else
143 close();
144 return;
145 }
146 if (event.button() == GUI::MouseButton::Secondary) {
147 m_audio_client->set_main_mix_muted(!m_audio_muted);
148 update();
149 }
150 }
151
152 virtual void mousewheel_event(GUI::MouseEvent& event) override
153 {
154 if (m_audio_muted)
155 return;
156 m_slider->dispatch_event(event);
157 update();
158 }
159
160 virtual void paint_event(GUI::PaintEvent& event) override
161 {
162 GUI::Painter painter(*this);
163 painter.add_clip_rect(event.rect());
164 painter.clear_rect(event.rect(), Color::from_argb(0));
165
166 auto& audio_bitmap = choose_bitmap_from_volume();
167 painter.blit({}, audio_bitmap, audio_bitmap.rect());
168
169 if (m_show_percent) {
170 auto volume_text = m_audio_muted ? "mute" : DeprecatedString::formatted("{}%", m_audio_volume);
171 painter.draw_text(Gfx::IntRect { 16, 3, 24, 16 }, volume_text, Gfx::FontDatabase::default_fixed_width_font(), Gfx::TextAlignment::TopLeft, palette().window_text());
172 }
173 }
174
175 virtual void applet_area_rect_change_event(GUI::AppletAreaRectChangeEvent&) override
176 {
177 reposition_slider_window();
178 }
179
180 void open()
181 {
182 reposition_slider_window();
183 m_slider_window->show();
184 }
185
186 void close()
187 {
188 m_slider_window->hide();
189 }
190
191 Gfx::Bitmap& choose_bitmap_from_volume()
192 {
193 if (m_audio_muted)
194 return *m_volume_level_bitmaps.last().bitmap;
195
196 for (auto& pair : m_volume_level_bitmaps) {
197 if (m_audio_volume >= pair.volume_threshold)
198 return *pair.bitmap;
199 }
200 VERIFY_NOT_REACHED();
201 }
202
203 void reposition_slider_window()
204 {
205 constexpr auto width { 50 };
206 constexpr auto height { 125 };
207 constexpr auto tray_and_taskbar_padding { 6 };
208 constexpr auto icon_offset { (width - 16) / 2 };
209 auto applet_rect = window()->applet_rect_on_screen();
210 m_slider_window->set_rect(
211 applet_rect.x() - icon_offset,
212 applet_rect.y() - height - tray_and_taskbar_padding,
213 width,
214 height);
215 }
216
217 NonnullRefPtr<Audio::ConnectionToServer> m_audio_client;
218 Array<VolumeBitmapPair, 5> m_volume_level_bitmaps;
219 bool m_show_percent { false };
220 bool m_audio_muted { false };
221 int m_audio_volume { 100 };
222
223 RefPtr<GUI::Slider> m_slider;
224 RefPtr<GUI::Window> m_slider_window;
225 RefPtr<GUI::CheckBox> m_mute_box;
226 RefPtr<GUI::CheckBox> m_percent_box;
227 RefPtr<GUI::Frame> m_root_container;
228};
229
230ErrorOr<int> serenity_main(Main::Arguments arguments)
231{
232 TRY(Core::System::pledge("stdio recvfd sendfd rpath wpath cpath unix thread"));
233
234 auto app = TRY(GUI::Application::try_create(arguments));
235 Config::pledge_domain("AudioApplet");
236 TRY(Core::System::unveil("/tmp/session/%sid/portal/audio", "rw"));
237 TRY(Core::System::unveil("/res", "r"));
238 TRY(Core::System::unveil(nullptr, nullptr));
239
240 auto window = TRY(GUI::Window::try_create());
241 window->set_has_alpha_channel(true);
242 window->set_title("Audio");
243 window->set_window_type(GUI::WindowType::Applet);
244
245 auto audio_widget = TRY(window->set_main_widget<AudioWidget>());
246 window->show();
247
248 // This positioning code depends on the window actually existing.
249 static_cast<AudioWidget*>(window->main_widget())->set_audio_widget_size(Config::read_bool("AudioApplet"sv, "Applet"sv, "ShowPercent"sv, false));
250
251 TRY(Core::System::pledge("stdio recvfd sendfd rpath"));
252
253 return app->exec();
254}