mirror of
https://github.com/polybar/polybar.git
synced 2024-11-11 13:50:56 -05:00
550 lines
16 KiB
C++
550 lines
16 KiB
C++
#pragma once
|
|
|
|
#include <thread>
|
|
|
|
#include "common.hpp"
|
|
#include "components/bar.hpp"
|
|
#include "components/config.hpp"
|
|
#include "components/logger.hpp"
|
|
#include "components/x11/connection.hpp"
|
|
#include "components/x11/randr.hpp"
|
|
#include "components/x11/tray.hpp"
|
|
#include "components/x11/types.hpp"
|
|
#include "config.hpp"
|
|
#include "utils/command.hpp"
|
|
#include "utils/inotify.hpp"
|
|
#include "utils/process.hpp"
|
|
#include "utils/socket.hpp"
|
|
#include "utils/throttle.hpp"
|
|
|
|
#include "modules/backlight.hpp"
|
|
#include "modules/battery.hpp"
|
|
#include "modules/bspwm.hpp"
|
|
#include "modules/counter.hpp"
|
|
#include "modules/cpu.hpp"
|
|
#include "modules/date.hpp"
|
|
#include "modules/memory.hpp"
|
|
#include "modules/menu.hpp"
|
|
#include "modules/script.hpp"
|
|
#include "modules/text.hpp"
|
|
#include "modules/unsupported.hpp"
|
|
#if ENABLE_I3
|
|
#include "modules/i3.hpp"
|
|
#endif
|
|
#if ENABLE_MPD
|
|
#include "modules/mpd.hpp"
|
|
#endif
|
|
#if ENABLE_NETWORK
|
|
#include "modules/network.hpp"
|
|
#endif
|
|
#if ENABLE_ALSA
|
|
#include "modules/volume.hpp"
|
|
#endif
|
|
|
|
LEMONBUDDY_NS
|
|
|
|
using namespace modules;
|
|
using module_t = unique_ptr<module_interface>;
|
|
|
|
class controller {
|
|
public:
|
|
/**
|
|
* Construct controller
|
|
*/
|
|
explicit controller(connection& conn, const logger& logger, const config& config,
|
|
unique_ptr<bar> bar, unique_ptr<traymanager> tray, inotify_watch_t& confwatch)
|
|
: m_connection(conn)
|
|
, m_log(logger)
|
|
, m_conf(config)
|
|
, m_bar(forward<decltype(bar)>(bar))
|
|
, m_traymanager(forward<decltype(tray)>(tray))
|
|
, m_confwatch(confwatch) {}
|
|
|
|
/**
|
|
* Stop modules and cleanup X components,
|
|
* threads and spawned processes
|
|
*/
|
|
~controller() noexcept {
|
|
if (!m_mutex.try_lock_for(3s)) {
|
|
m_log.warn("Failed to acquire lock for 3s... Forcing shutdown using SIGKILL");
|
|
raise(SIGKILL);
|
|
}
|
|
|
|
std::lock_guard<std::timed_mutex> guard(m_mutex, std::adopt_lock);
|
|
|
|
m_log.trace("controller: Stop modules");
|
|
for (auto&& block : m_modules) {
|
|
for (auto&& module : block.second) {
|
|
module->on_update.disconnect(this, &controller::on_module_update);
|
|
module->on_stop.disconnect(this, &controller::on_module_stop);
|
|
module->stop();
|
|
}
|
|
}
|
|
|
|
m_log.trace("controller: Deconstruct bar instance");
|
|
bar_signals::action_click.disconnect(this, &controller::on_module_click);
|
|
m_bar.reset();
|
|
|
|
if (m_traymanager) {
|
|
m_log.trace("controller: Deactivate tray manager");
|
|
m_traymanager->deactivate();
|
|
}
|
|
|
|
m_log.trace("controller: Interrupt X event loop");
|
|
m_connection.send_dummy_event(m_connection.root());
|
|
|
|
if (m_confwatch) {
|
|
try {
|
|
m_log.trace("controller: Remove config watch");
|
|
m_confwatch->remove();
|
|
} catch (const system_error& err) {
|
|
}
|
|
}
|
|
|
|
m_log.trace("controller: Stop modules");
|
|
for (auto&& block : m_modules) {
|
|
for (auto&& module : block.second) {
|
|
module->on_update.disconnect(this, &controller::on_module_update);
|
|
module->on_stop.disconnect(this, &controller::on_module_stop);
|
|
module->stop();
|
|
}
|
|
}
|
|
|
|
if (!m_threads.empty()) {
|
|
m_log.trace("controller: Join active threads");
|
|
for (auto&& thread : m_threads) {
|
|
if (thread.joinable())
|
|
thread.join();
|
|
}
|
|
}
|
|
|
|
m_log.trace("controller: Wait for spawned processes");
|
|
while (process_util::notify_childprocess())
|
|
;
|
|
|
|
m_connection.flush();
|
|
}
|
|
|
|
/**
|
|
* Setup X environment
|
|
*/
|
|
auto bootstrap(bool to_stdout = false, bool dump_wmname = false) {
|
|
m_stdout = to_stdout;
|
|
|
|
m_log.trace("controller: Initialize X atom cache");
|
|
m_connection.preload_atoms();
|
|
|
|
m_log.trace("controller: Query X extension data");
|
|
m_connection.query_extensions();
|
|
|
|
// const auto& damage_ext = m_connection.extension<xpp::damage::extension>();
|
|
// m_log.trace("controller: Found 'Damage' (first_event: %i, first_error: %i)",
|
|
// damage_ext->first_event, damage_ext->first_error);
|
|
|
|
// const auto& render_ext = m_connection.extension<xpp::render::extension>();
|
|
// m_log.trace("controller: Found 'Render' (first_event: %i, first_error: %i)",
|
|
// render_ext->first_event, render_ext->first_error);
|
|
|
|
const auto& randr_ext = m_connection.extension<xpp::randr::extension>();
|
|
m_log.trace("controller: Found 'RandR' (first_event: %i, first_error: %i)",
|
|
randr_ext->first_event, randr_ext->first_error);
|
|
|
|
// Listen for events on the root window to be able to
|
|
// break the blocking wait call when cleaning up
|
|
m_log.trace("controller: Listen for events on the root window");
|
|
const uint32_t value_list[1]{XCB_EVENT_MASK_STRUCTURE_NOTIFY};
|
|
m_connection.change_window_attributes(m_connection.root(), XCB_CW_EVENT_MASK, value_list);
|
|
|
|
try {
|
|
m_log.trace("controller: Setup bar renderer");
|
|
m_bar->bootstrap(m_stdout || dump_wmname);
|
|
if (dump_wmname) {
|
|
std::cout << m_bar->settings().wmname << std::endl;
|
|
return;
|
|
} else if (!to_stdout) {
|
|
bar_signals::action_click.connect(this, &controller::on_module_click);
|
|
}
|
|
} catch (const std::exception& err) {
|
|
throw application_error("Failed to setup bar renderer: " + string{err.what()});
|
|
}
|
|
|
|
try {
|
|
if (m_stdout) {
|
|
m_log.trace("controller: Disabling tray (reason: stdout mode)");
|
|
m_traymanager.reset();
|
|
} else if (m_bar->tray().align == alignment::NONE) {
|
|
m_log.trace("controller: Disabling tray (reason: tray-position)");
|
|
m_traymanager.reset();
|
|
} else {
|
|
m_log.trace("controller: Setup tray manager");
|
|
m_traymanager->bootstrap(m_bar->tray());
|
|
}
|
|
} catch (const std::exception& err) {
|
|
m_log.err(err.what());
|
|
m_log.warn("controller: Disabling tray...");
|
|
m_traymanager.reset();
|
|
}
|
|
|
|
m_log.trace("main: Setup bar modules");
|
|
bootstrap_modules();
|
|
|
|
// Allow <throttle_limit> ticks within <throttle_ms> timeframe
|
|
const auto throttle_limit = m_conf.get<unsigned int>("settings", "throttle_limit", 3);
|
|
const auto throttle_ms = chrono::duration<double, std::milli>(
|
|
m_conf.get<unsigned int>("settings", "throttle_ms", 60));
|
|
m_throttler = throttle_util::make_throttler(throttle_limit, throttle_ms);
|
|
}
|
|
|
|
/**
|
|
* Launch the controller
|
|
*/
|
|
auto run() {
|
|
assert(!m_connection.connection_has_error());
|
|
|
|
m_log.info("Starting application...");
|
|
m_running = true;
|
|
|
|
install_sigmask();
|
|
install_confwatch();
|
|
|
|
m_threads.emplace_back([this] {
|
|
m_connection.flush();
|
|
|
|
m_log.trace("controller: Start modules");
|
|
for (auto&& block : m_modules) {
|
|
for (auto&& module : block.second) {
|
|
module->on_update.connect(this, &controller::on_module_update);
|
|
module->on_stop.connect(this, &controller::on_module_stop);
|
|
|
|
try {
|
|
module->start();
|
|
} catch (const application_error& err) {
|
|
m_log.err("Failed to start '%s' (reason: %s)", module->name(), err.what());
|
|
}
|
|
}
|
|
}
|
|
|
|
if (m_stdout) {
|
|
m_log.trace("controller: Ignoring tray manager (reason: stdout mode)");
|
|
m_log.trace("controller: Ignoring X event loop (reason: stdout mode)");
|
|
return;
|
|
}
|
|
|
|
if (m_traymanager) {
|
|
try {
|
|
m_log.trace("controller: Activate tray manager");
|
|
m_traymanager->activate();
|
|
} catch (const std::exception& err) {
|
|
m_log.err(err.what());
|
|
m_log.err("controller: Failed to activate tray manager...");
|
|
}
|
|
}
|
|
|
|
m_log.trace("controller: Listen for X events");
|
|
while (m_running) {
|
|
m_connection.flush();
|
|
m_connection.dispatch_event(m_connection.wait_for_event());
|
|
}
|
|
});
|
|
|
|
wait();
|
|
|
|
m_running = false;
|
|
|
|
return !m_reload;
|
|
}
|
|
|
|
/**
|
|
* Block execution until a defined signal is raised
|
|
*/
|
|
void wait() {
|
|
m_log.trace("controller: Wait for signal");
|
|
|
|
int caught_signal = 0;
|
|
sigwait(&m_waitmask, &caught_signal);
|
|
|
|
m_log.warn("Termination signal received, shutting down...");
|
|
m_log.trace("controller: Caught signal %d", caught_signal);
|
|
|
|
m_reload = (caught_signal == SIGUSR1);
|
|
}
|
|
|
|
/**
|
|
* Configure injection module
|
|
*/
|
|
static di::injector<unique_ptr<controller>> configure(inotify_watch_t& confwatch) {
|
|
// clang-format off
|
|
return di::make_injector(di::bind<controller>().to<controller>(),
|
|
di::bind<>().to(confwatch),
|
|
connection::configure(),
|
|
logger::configure(), config::configure(),
|
|
bar::configure(),
|
|
traymanager::configure());
|
|
// clang-format on
|
|
}
|
|
|
|
protected:
|
|
/**
|
|
* Set signal mask for the current and future threads
|
|
*/
|
|
void install_sigmask() {
|
|
if (!m_running)
|
|
return;
|
|
|
|
m_log.trace("controller: Set sigmask for current and future threads");
|
|
|
|
sigemptyset(&m_waitmask);
|
|
sigaddset(&m_waitmask, SIGINT);
|
|
sigaddset(&m_waitmask, SIGQUIT);
|
|
sigaddset(&m_waitmask, SIGTERM);
|
|
sigaddset(&m_waitmask, SIGUSR1);
|
|
|
|
if (pthread_sigmask(SIG_BLOCK, &m_waitmask, nullptr) == -1)
|
|
throw system_error();
|
|
}
|
|
|
|
/**
|
|
* Listen for changes to the config file
|
|
*/
|
|
void install_confwatch() {
|
|
if (!m_running)
|
|
return;
|
|
|
|
if (!m_confwatch) {
|
|
m_log.trace("controller: Config watch not set, skip...");
|
|
return;
|
|
}
|
|
|
|
m_threads.emplace_back([this] {
|
|
this_thread::sleep_for(1s);
|
|
|
|
try {
|
|
if (!m_running)
|
|
return;
|
|
|
|
m_log.trace("controller: Attach config watch");
|
|
m_confwatch->attach(IN_MODIFY);
|
|
|
|
m_log.trace("controller: Wait for config file inotify event");
|
|
m_confwatch->get_event();
|
|
|
|
if (!m_running)
|
|
return;
|
|
|
|
m_log.info("Configuration file changed...");
|
|
kill(getpid(), SIGUSR1);
|
|
} catch (const system_error& err) {
|
|
m_log.err(err.what());
|
|
m_log.trace("controller: Reset config watch");
|
|
m_confwatch.reset();
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Create and initialize bar modules
|
|
*/
|
|
void bootstrap_modules() {
|
|
m_modules.emplace(alignment::LEFT, vector<module_t>{});
|
|
m_modules.emplace(alignment::CENTER, vector<module_t>{});
|
|
m_modules.emplace(alignment::RIGHT, vector<module_t>{});
|
|
|
|
for (auto& block : m_modules) {
|
|
string bs{m_conf.bar_section()};
|
|
string confkey;
|
|
|
|
switch (block.first) {
|
|
case alignment::LEFT:
|
|
confkey = "modules-left";
|
|
break;
|
|
case alignment::CENTER:
|
|
confkey = "modules-center";
|
|
break;
|
|
case alignment::RIGHT:
|
|
confkey = "modules-right";
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
for (auto& module_name : string_util::split(m_conf.get<string>(bs, confkey, ""), ' ')) {
|
|
auto type = m_conf.get<string>("module/" + module_name, "type");
|
|
auto bar = m_bar->settings();
|
|
auto& modules = block.second;
|
|
|
|
if (type == "internal/counter")
|
|
modules.emplace_back(new counter_module(bar, m_log, m_conf, module_name));
|
|
else if (type == "internal/backlight")
|
|
modules.emplace_back(new backlight_module(bar, m_log, m_conf, module_name));
|
|
else if (type == "internal/battery")
|
|
modules.emplace_back(new battery_module(bar, m_log, m_conf, module_name));
|
|
else if (type == "internal/bspwm")
|
|
modules.emplace_back(new bspwm_module(bar, m_log, m_conf, module_name));
|
|
else if (type == "internal/cpu")
|
|
modules.emplace_back(new cpu_module(bar, m_log, m_conf, module_name));
|
|
else if (type == "internal/date")
|
|
modules.emplace_back(new date_module(bar, m_log, m_conf, module_name));
|
|
else if (type == "internal/memory")
|
|
modules.emplace_back(new memory_module(bar, m_log, m_conf, module_name));
|
|
else if (type == "internal/i3")
|
|
modules.emplace_back(new i3_module(bar, m_log, m_conf, module_name));
|
|
else if (type == "internal/mpd")
|
|
modules.emplace_back(new mpd_module(bar, m_log, m_conf, module_name));
|
|
else if (type == "internal/volume")
|
|
modules.emplace_back(new volume_module(bar, m_log, m_conf, module_name));
|
|
else if (type == "internal/network")
|
|
modules.emplace_back(new network_module(bar, m_log, m_conf, module_name));
|
|
else if (type == "custom/text")
|
|
modules.emplace_back(new text_module(bar, m_log, m_conf, module_name));
|
|
else if (type == "custom/script")
|
|
modules.emplace_back(new script_module(bar, m_log, m_conf, module_name));
|
|
else if (type == "custom/menu")
|
|
modules.emplace_back(new menu_module(bar, m_log, m_conf, module_name));
|
|
else
|
|
throw application_error("Unknown module: " + module_name);
|
|
}
|
|
}
|
|
}
|
|
|
|
void on_module_update(string module_name) {
|
|
if (!m_mutex.try_lock())
|
|
return;
|
|
std::lock_guard<std::timed_mutex> guard(m_mutex, std::adopt_lock);
|
|
|
|
if (!m_running)
|
|
return;
|
|
|
|
if (!m_throttler->passthrough(m_throttle_strategy)) {
|
|
m_log.trace("controller: Update event throttled");
|
|
return;
|
|
}
|
|
|
|
string contents{""};
|
|
string separator{m_bar->settings().separator};
|
|
|
|
string padding_left(m_bar->settings().padding_left, ' ');
|
|
string padding_right(m_bar->settings().padding_right, ' ');
|
|
|
|
auto margin_left = m_bar->settings().module_margin_left;
|
|
auto margin_right = m_bar->settings().module_margin_right;
|
|
|
|
for (auto&& block : m_modules) {
|
|
string block_contents;
|
|
|
|
for (auto&& module : block.second) {
|
|
auto module_contents = module->contents();
|
|
|
|
if (module_contents.empty())
|
|
continue;
|
|
|
|
if (!block_contents.empty() && !separator.empty())
|
|
block_contents += separator;
|
|
|
|
if (!(block.first == alignment::LEFT && module == block.second.front()))
|
|
block_contents += string(margin_left, ' ');
|
|
|
|
block_contents += module->contents();
|
|
|
|
if (!(block.first == alignment::RIGHT && module == block.second.back()))
|
|
block_contents += string(margin_right, ' ');
|
|
}
|
|
|
|
if (block_contents.empty())
|
|
continue;
|
|
|
|
switch (block.first) {
|
|
case alignment::LEFT:
|
|
contents += "%{l}";
|
|
contents += padding_left;
|
|
break;
|
|
case alignment::CENTER:
|
|
contents += "%{c}";
|
|
break;
|
|
case alignment::RIGHT:
|
|
contents += "%{r}";
|
|
block_contents += padding_right;
|
|
break;
|
|
case alignment::NONE:
|
|
break;
|
|
}
|
|
|
|
block_contents = string_util::replace_all(block_contents, "B-}%{B#", "B#");
|
|
block_contents = string_util::replace_all(block_contents, "F-}%{F#", "F#");
|
|
block_contents = string_util::replace_all(block_contents, "T-}%{T", "T");
|
|
contents += string_util::replace_all(block_contents, "}%{", " ");
|
|
}
|
|
|
|
if (m_stdout)
|
|
std::cout << contents << std::endl;
|
|
else
|
|
m_bar->parse(contents);
|
|
}
|
|
|
|
void on_module_stop(string module_name) {
|
|
for (auto&& block : m_modules) {
|
|
for (auto&& module : block.second) {
|
|
if (module->running())
|
|
return;
|
|
}
|
|
}
|
|
|
|
m_log.warn("No running modules, raising SIGTERM");
|
|
kill(getpid(), SIGTERM);
|
|
}
|
|
|
|
void on_module_click(string input) {
|
|
if (!m_mutex.try_lock())
|
|
return;
|
|
std::lock_guard<std::timed_mutex> guard(m_mutex, std::adopt_lock);
|
|
|
|
for (auto&& block : m_modules) {
|
|
for (auto&& module : block.second) {
|
|
if (!module->receive_events())
|
|
continue;
|
|
if (module->handle_event(input))
|
|
return;
|
|
}
|
|
}
|
|
|
|
m_log.trace("controller: Unrecognized input '%s'", input);
|
|
m_log.trace("controller: Forwarding input to shell");
|
|
|
|
auto command = command_util::make_command("/usr/bin/env\nsh\n-c\n"+ input);
|
|
|
|
try {
|
|
command->exec(false);
|
|
command->tail([this](std::string output){
|
|
m_log.trace("> %s", output);
|
|
});
|
|
command->wait();
|
|
} catch (const application_error& err) {
|
|
m_log.err(err.what());
|
|
}
|
|
}
|
|
|
|
private:
|
|
connection& m_connection;
|
|
registry m_registry{m_connection};
|
|
const logger& m_log;
|
|
const config& m_conf;
|
|
unique_ptr<bar> m_bar;
|
|
unique_ptr<traymanager> m_traymanager;
|
|
|
|
std::timed_mutex m_mutex;
|
|
|
|
stateflag m_stdout{false};
|
|
stateflag m_running{false};
|
|
stateflag m_reload{false};
|
|
|
|
sigset_t m_waitmask;
|
|
|
|
inotify_watch_t& m_confwatch;
|
|
|
|
vector<thread> m_threads;
|
|
map<alignment, vector<module_t>> m_modules;
|
|
|
|
unique_ptr<throttle_util::event_throttler> m_throttler;
|
|
throttle_util::strategy::try_once_or_leave_yolo m_throttle_strategy;
|
|
};
|
|
|
|
LEMONBUDDY_NS_END
|