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serenity/Userland/Applets/Audio/main.cpp
thankyouverycool 92fffc3abc LibGUI: Rename CallOnChange => AllowCallback and implement elsewhere 
This is a helpful option to prevent unwanted side effects, distinguish
between user and programmatic input, etc. Sliders and SpinBoxes were
implementing it idiosyncratically, so let's generalize the API and
give Buttons and TextEditors the same ability.
2021-09-22 21:35:42 +02:00

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8.6 KiB
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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, kleines Filmröllchen <malu.bertsch@gmail.com>
* Copyright (c) 2021, David Isaksson <davidisaksson93@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibAudio/ClientConnection.h>
#include <LibConfig/Client.h>
#include <LibGUI/Application.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/CheckBox.h>
#include <LibGUI/Label.h>
#include <LibGUI/Painter.h>
#include <LibGUI/Slider.h>
#include <LibGUI/Widget.h>
#include <LibGUI/Window.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/FontDatabase.h>
#include <LibGfx/Palette.h>
class AudioWidget final : public GUI::Widget {
C_OBJECT(AudioWidget)
public:
AudioWidget()
: m_audio_client(Audio::ClientConnection::construct())
, m_show_percent(Config::read_bool("AudioApplet", "Applet", "ShowPercent", false))
{
m_audio_volume = static_cast<int>(m_audio_client->get_main_mix_volume() * 100);
m_audio_muted = m_audio_client->get_muted();
m_audio_client->on_muted_state_change = [this](bool muted) {
if (m_audio_muted == muted)
return;
m_mute_box->set_checked(!m_audio_muted);
m_slider->set_enabled(!muted);
m_audio_muted = muted;
update();
};
m_audio_client->on_main_mix_volume_change = [this](double volume) {
m_audio_volume = static_cast<int>(round(volume * 100));
m_slider->set_value(m_slider->max() - m_audio_volume, GUI::AllowCallback::No);
if (!m_audio_muted)
update();
};
m_volume_level_bitmaps.append({ 66, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/audio-volume-high.png") });
m_volume_level_bitmaps.append({ 33, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/audio-volume-medium.png") });
m_volume_level_bitmaps.append({ 1, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/audio-volume-low.png") });
m_volume_level_bitmaps.append({ 0, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/audio-volume-zero.png") });
m_volume_level_bitmaps.append({ 0, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/audio-volume-muted.png") });
m_slider_window = add<GUI::Window>(window());
m_slider_window->set_frameless(true);
m_slider_window->set_resizable(false);
m_slider_window->set_minimizable(false);
m_slider_window->on_active_input_change = [this](bool is_active_input) {
if (!is_active_input)
close();
};
m_root_container = m_slider_window->set_main_widget<GUI::Label>();
m_root_container->set_fill_with_background_color(true);
m_root_container->set_layout<GUI::VerticalBoxLayout>();
m_root_container->layout()->set_margins({ 4, 0 });
m_root_container->layout()->set_spacing(0);
m_root_container->set_frame_thickness(2);
m_root_container->set_frame_shape(Gfx::FrameShape::Container);
m_root_container->set_frame_shadow(Gfx::FrameShadow::Raised);
m_percent_box = m_root_container->add<GUI::CheckBox>("\xE2\x84\xB9");
m_percent_box->set_fixed_size(27, 16);
m_percent_box->set_tooltip(m_show_percent ? "Hide percent" : "Show percent");
m_percent_box->set_checked(m_show_percent);
m_percent_box->on_checked = [&](bool show_percent) {
m_show_percent = show_percent;
set_audio_widget_size(m_show_percent);
m_percent_box->set_tooltip(m_show_percent ? "Hide percent" : "Show percent");
GUI::Application::the()->hide_tooltip();
Config::write_bool("AudioApplet", "Applet", "ShowPercent", m_show_percent);
};
m_slider = m_root_container->add<GUI::VerticalSlider>();
m_slider->set_max(100);
m_slider->set_page_step(5);
m_slider->set_step(5);
m_slider->set_value(m_slider->max() - m_audio_volume);
m_slider->set_knob_size_mode(GUI::Slider::KnobSizeMode::Proportional);
m_slider->on_change = [&](int value) {
m_audio_volume = m_slider->max() - value;
double volume = clamp(static_cast<double>(m_audio_volume) / m_slider->max(), 0.0, 1.0);
m_audio_client->set_main_mix_volume(volume);
update();
};
m_mute_box = m_root_container->add<GUI::CheckBox>("\xE2\x9D\x8C");
m_mute_box->set_fixed_size(27, 16);
m_mute_box->set_checked(m_audio_muted);
m_mute_box->set_tooltip(m_audio_muted ? "Unmute" : "Mute");
m_mute_box->on_checked = [&](bool is_muted) {
m_mute_box->set_tooltip(is_muted ? "Unmute" : "Mute");
m_audio_client->set_muted(is_muted);
GUI::Application::the()->hide_tooltip();
};
}
virtual ~AudioWidget() override { }
void set_audio_widget_size(bool show_percent)
{
if (show_percent)
window()->resize(44, 16);
else
window()->resize(16, 16);
}
private:
virtual void mousedown_event(GUI::MouseEvent& event) override
{
if (event.button() == GUI::MouseButton::Left) {
if (!m_slider_window->is_visible())
open();
else
close();
return;
}
if (event.button() == GUI::MouseButton::Right) {
m_audio_client->set_muted(!m_audio_muted);
update();
}
}
virtual void mousewheel_event(GUI::MouseEvent& event) override
{
if (m_audio_muted)
return;
m_slider->dispatch_event(event);
update();
}
virtual void paint_event(GUI::PaintEvent& event) override
{
GUI::Painter painter(*this);
painter.add_clip_rect(event.rect());
painter.clear_rect(event.rect(), Color::from_rgba(0));
auto& audio_bitmap = choose_bitmap_from_volume();
painter.blit({}, audio_bitmap, audio_bitmap.rect());
if (m_show_percent) {
auto volume_text = m_audio_muted ? "mute" : String::formatted("{}%", m_audio_volume);
painter.draw_text({ 16, 3, 24, 16 }, volume_text, Gfx::FontDatabase::default_fixed_width_font(), Gfx::TextAlignment::TopLeft, palette().window_text());
}
}
virtual void applet_area_rect_change_event(GUI::AppletAreaRectChangeEvent&) override
{
reposition_slider_window();
}
void open()
{
reposition_slider_window();
m_slider_window->show();
}
void close()
{
m_slider_window->hide();
}
Gfx::Bitmap& choose_bitmap_from_volume()
{
if (m_audio_muted)
return *m_volume_level_bitmaps.last().bitmap;
for (auto& pair : m_volume_level_bitmaps) {
if (m_audio_volume >= pair.volume_threshold)
return *pair.bitmap;
}
VERIFY_NOT_REACHED();
}
void reposition_slider_window()
{
auto applet_rect = window()->applet_rect_on_screen();
m_slider_window->set_rect(applet_rect.x() - 20, applet_rect.y() - 106, 50, 100);
}
struct VolumeBitmapPair {
int volume_threshold { 0 };
RefPtr<Gfx::Bitmap> bitmap;
};
NonnullRefPtr<Audio::ClientConnection> m_audio_client;
Vector<VolumeBitmapPair, 5> m_volume_level_bitmaps;
bool m_show_percent { false };
bool m_audio_muted { false };
int m_audio_volume { 100 };
RefPtr<GUI::Slider> m_slider;
RefPtr<GUI::Window> m_slider_window;
RefPtr<GUI::CheckBox> m_mute_box;
RefPtr<GUI::CheckBox> m_percent_box;
RefPtr<GUI::Label> m_root_container;
};
int main(int argc, char** argv)
{
if (pledge("stdio recvfd sendfd rpath wpath cpath unix", nullptr) < 0) {
perror("pledge");
return 1;
}
auto app = GUI::Application::construct(argc, argv);
if (unveil("/tmp/portal/config", "rw") < 0) {
perror("unveil");
return 1;
}
if (unveil("/tmp/portal/audio", "rw") < 0) {
perror("unveil");
return 1;
}
if (unveil("/res", "r") < 0) {
perror("unveil");
return 1;
}
unveil(nullptr, nullptr);
Config::pledge_domains("AudioApplet");
auto window = GUI::Window::construct();
window->set_has_alpha_channel(true);
window->set_title("Audio");
window->set_window_type(GUI::WindowType::Applet);
window->set_main_widget<AudioWidget>();
window->show();
// This positioning code depends on the window actually existing.
static_cast<AudioWidget*>(window->main_widget())->set_audio_widget_size(Config::read_bool("AudioApplet", "Applet", "ShowPercent", false));
if (pledge("stdio recvfd sendfd rpath", nullptr) < 0) {
perror("pledge");
return 1;
}
return app->exec();
}
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