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53d34a0885
To facilitate listening for action on arbitrary file descriptors,
I've added a GNotifier class. It's quite simple but very useful:
GNotifier notifier(fd, GNotifier::Read);
notifier.on_ready_to_read = [this] (GNotifier& fd) {
// read from fd or whatever else you like :^)
};
The callback will get invoked by GEventLoop when select() says we
have something to read on the fd.
74 lines
1.7 KiB
C++
74 lines
1.7 KiB
C++
#pragma once
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#include "GEvent.h"
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#include <AK/Badge.h>
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#include <AK/HashMap.h>
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#include <AK/OwnPtr.h>
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#include <AK/Vector.h>
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class GObject;
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class GNotifier;
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class GWindow;
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struct GUI_Event;
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class GEventLoop {
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public:
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GEventLoop();
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~GEventLoop();
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int exec();
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void post_event(GObject* receiver, OwnPtr<GEvent>&&);
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static GEventLoop& main();
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static void initialize();
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bool running() const { return m_running; }
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int register_timer(GObject&, int milliseconds, bool should_reload);
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bool unregister_timer(int timer_id);
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void register_notifier(Badge<GNotifier>, GNotifier&);
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void unregister_notifier(Badge<GNotifier>, GNotifier&);
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void exit(int);
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private:
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void wait_for_event();
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void handle_paint_event(const GUI_Event&, GWindow&);
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void handle_mouse_event(const GUI_Event&, GWindow&);
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void handle_key_event(const GUI_Event&, GWindow&);
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void handle_window_activation_event(const GUI_Event&, GWindow&);
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void handle_window_close_request_event(const GUI_Event&, GWindow&);
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void get_next_timer_expiration(timeval&);
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struct QueuedEvent {
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GObject* receiver { nullptr };
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OwnPtr<GEvent> event;
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};
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Vector<QueuedEvent> m_queued_events;
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int m_event_fd { -1 };
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bool m_running { false };
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bool m_exit_requested { false };
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int m_exit_code { 0 };
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int m_next_timer_id { 1 };
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struct EventLoopTimer {
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int timer_id { 0 };
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int interval { 0 };
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timeval fire_time;
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bool should_reload { false };
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GObject* owner { nullptr };
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void reload();
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bool has_expired() const;
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};
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HashMap<int, OwnPtr<EventLoopTimer>> m_timers;
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HashTable<GNotifier*> m_notifiers;
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};
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