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polybar/include/events/signal.hpp
Patrick Ziegler c2f087225c
Eventloop cleanup (#2577)
* eventloop: Use eventloop namespace in cpp files

* changelog: Add missing deprecated hook message

* Make eventloop and ipc classes non-copyable and non-movable

* Remove functional.hpp

* eventloop: Don't close handles in error cases

Client should be responsible for closing handles.

* eventloop: Address invalidation of handle references
2022-01-22 22:00:26 +01:00

113 lines
3.3 KiB
C++

#pragma once
#include "common.hpp"
#include "components/types.hpp"
POLYBAR_NS
namespace signals {
namespace detail {
class signal {
public:
explicit signal() = default;
virtual ~signal() {}
virtual size_t size() const = 0;
};
template <typename Derived>
class base_signal : public signal {
public:
using base_type = base_signal<Derived>;
explicit base_signal() = default;
virtual ~base_signal() {}
virtual size_t size() const override {
return sizeof(Derived);
};
};
template <typename Derived, typename ValueType>
class value_signal : public base_signal<Derived> {
public:
using base_type = value_signal<Derived, ValueType>;
explicit value_signal(void* data) : m_ptr(data) {}
explicit value_signal(const ValueType&& data) : m_ptr(&data) {}
explicit value_signal(const ValueType& data) : m_ptr(&data) {}
virtual ~value_signal() {}
inline const ValueType cast() const {
return *static_cast<const ValueType*>(m_ptr);
}
private:
const void* m_ptr;
};
} // namespace detail
namespace eventqueue {
struct exit_reload : public detail::base_signal<exit_reload> {
using base_type::base_type;
};
struct notify_change : public detail::base_signal<notify_change> {
using base_type::base_type;
};
struct notify_forcechange : public detail::base_signal<notify_forcechange> {
using base_type::base_type;
};
struct check_state : public detail::base_signal<check_state> {
using base_type::base_type;
};
} // namespace eventqueue
namespace ipc {
struct command : public detail::value_signal<command, string> {
using base_type::base_type;
};
struct hook : public detail::value_signal<hook, string> {
using base_type::base_type;
};
struct action : public detail::value_signal<action, string> {
using base_type::base_type;
};
} // namespace ipc
namespace ui {
struct changed : public detail::base_signal<changed> {
using base_type::base_type;
};
struct button_press : public detail::value_signal<button_press, string> {
using base_type::base_type;
};
struct cursor_change : public detail::value_signal<cursor_change, string> {
using base_type::base_type;
};
struct visibility_change : public detail::value_signal<visibility_change, bool> {
using base_type::base_type;
};
struct dim_window : public detail::value_signal<dim_window, double> {
using base_type::base_type;
};
struct request_snapshot : public detail::value_signal<request_snapshot, string> {
using base_type::base_type;
};
/// emitted whenever the desktop background slice changes
struct update_background : public detail::base_signal<update_background> {
using base_type::base_type;
};
/// emitted when the bar geometry changes (such as position of the bar on the screen)
struct update_geometry : public detail::base_signal<update_geometry> {
using base_type::base_type;
};
} // namespace ui
namespace ui_tray {
struct mapped_clients : public detail::value_signal<mapped_clients, unsigned int> {
using base_type::base_type;
};
} // namespace ui_tray
} // namespace signals
POLYBAR_NS_END