polybar-dwm/include/components/controller.hpp
patrick96 91759a4c96 Store all handles inside eventloop
This is needed because the handle's lifetime has to be at least the
lifetime of the eventloop since the eventloop requires the handle's
memory during shutdown (for closing the handles).
2021-09-21 20:36:23 +02:00

162 lines
4.2 KiB
C++

#pragma once
#include <moodycamel/blockingconcurrentqueue.h>
#include <mutex>
#include <thread>
#include "common.hpp"
#include "components/eventloop.hpp"
#include "components/types.hpp"
#include "events/signal_fwd.hpp"
#include "events/signal_receiver.hpp"
#include "settings.hpp"
#include "utils/actions.hpp"
#include "utils/file.hpp"
#include "x11/types.hpp"
POLYBAR_NS
// fwd decl {{{
enum class alignment;
class bar;
class config;
class connection;
class inotify_watch;
class ipc;
class logger;
class signal_emitter;
namespace modules {
struct module_interface;
} // namespace modules
using module_t = shared_ptr<modules::module_interface>;
using modulemap_t = std::map<alignment, vector<module_t>>;
// }}}
class controller : public signal_receiver<SIGN_PRIORITY_CONTROLLER, signals::eventqueue::exit_reload,
signals::eventqueue::notify_change, signals::eventqueue::notify_forcechange,
signals::eventqueue::check_state, signals::ipc::action, signals::ipc::command,
signals::ipc::hook, signals::ui::button_press, signals::ui::update_background> {
public:
using make_type = unique_ptr<controller>;
static make_type make(unique_ptr<ipc>&& ipc);
explicit controller(connection&, signal_emitter&, const logger&, const config&, unique_ptr<bar>&&, unique_ptr<ipc>&&);
~controller();
bool run(bool writeback, string snapshot_dst, bool confwatch);
void trigger_action(string&& input_data);
void trigger_quit(bool reload);
void trigger_update(bool force);
void stop(bool reload);
void signal_handler(int signum);
void conn_cb(int status, int events);
void ipc_cb(string buf);
void confwatch_handler(const char* fname, int events, int status);
void notifier_handler();
void screenshot_handler();
protected:
void trigger_notification();
void read_events(bool confwatch);
void process_inputdata(string&& cmd);
bool process_update(bool force);
void update_reload(bool reload);
bool on(const signals::eventqueue::notify_change& evt) override;
bool on(const signals::eventqueue::notify_forcechange& evt) override;
bool on(const signals::eventqueue::exit_reload& evt) override;
bool on(const signals::eventqueue::check_state& evt) override;
bool on(const signals::ui::button_press& evt) override;
bool on(const signals::ipc::action& evt) override;
bool on(const signals::ipc::command& evt) override;
bool on(const signals::ipc::hook& evt) override;
bool on(const signals::ui::update_background& evt) override;
private:
struct notifications_t {
bool quit;
bool reload;
bool update;
bool force_update;
string inputdata;
notifications_t() : quit(false), reload(false), update(false), force_update(false), inputdata(string{}) {}
};
size_t setup_modules(alignment align);
bool forward_action(const actions_util::action& cmd);
bool try_forward_legacy_action(const string& cmd);
connection& m_connection;
signal_emitter& m_sig;
const logger& m_log;
const config& m_conf;
unique_ptr<bar> m_bar;
unique_ptr<ipc> m_ipc;
std::unique_ptr<eventloop> eloop;
/**
* Once this is set to true, 'eloop' and any uv handles can be used.
*/
std::atomic_bool m_eloop_ready{false};
/**
* \brief Async handle to notify the eventloop
*
* This handle is used to notify the eventloop of changes which are not otherwise covered by other handles.
* E.g. click actions.
*/
AsyncHandle_t m_notifier{nullptr};
/**
* Notification data for the controller.
*
* Triggers, potentially from other threads, update this structure and notify the controller through m_notifier.
*/
notifications_t m_notifications{};
/**
* \brief Protected m_notifications.
*
* All accesses to m_notifications must hold this mutex.
*/
std::mutex m_notification_mutex{};
/**
* \brief Destination path of generated snapshot
*/
string m_snapshot_dst;
/**
* \brief Controls weather the output gets printed to stdout
*/
bool m_writeback{false};
/**
* \brief Loaded modules
*/
vector<module_t> m_modules;
/**
* \brief Loaded modules grouped by block
*/
modulemap_t m_blocks;
/**
* \brief Flag to trigger reload after shutdown
*/
bool m_reload{false};
};
POLYBAR_NS_END