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/*
* Copyright (c) 2022-2023, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "EventLoopImplementationQt.h"
#include <AK/IDAllocator.h>
#include <LibCore/Event.h>
#include <LibCore/Notifier.h>
#include <LibCore/Object.h>
#include <LibCore/ThreadEventQueue.h>
#include <QCoreApplication>
#include <QTimer>
namespace Ladybird {
struct ThreadData;
static thread_local ThreadData* s_thread_data;
struct ThreadData {
static ThreadData& the()
{
if (!s_thread_data) {
// FIXME: Don't leak this.
s_thread_data = new ThreadData;
}
return *s_thread_data;
}
IDAllocator timer_id_allocator;
HashMap<int, NonnullOwnPtr<QTimer>> timers;
HashMap<Core::Notifier*, NonnullOwnPtr<QSocketNotifier>> notifiers;
};
EventLoopImplementationQt::EventLoopImplementationQt()
{
}
EventLoopImplementationQt::~EventLoopImplementationQt() = default;
int EventLoopImplementationQt::exec()
{
if (is_main_loop())
return QCoreApplication::exec();
return m_event_loop.exec();
}
size_t EventLoopImplementationQt::pump(PumpMode mode)
{
auto result = Core::ThreadEventQueue::current().process();
if (mode == PumpMode::WaitForEvents) {
if (is_main_loop())
QCoreApplication::processEvents(QEventLoop::WaitForMoreEvents);
else
m_event_loop.processEvents(QEventLoop::WaitForMoreEvents);
} else {
}
result += Core::ThreadEventQueue::current().process();
return result;
}
void EventLoopImplementationQt::quit(int code)
{
if (is_main_loop())
QCoreApplication::exit(code);
else
m_event_loop.exit(code);
}
void EventLoopImplementationQt::wake()
{
if (!is_main_loop())
m_event_loop.wakeUp();
}
void EventLoopImplementationQt::post_event(Core::Object& receiver, NonnullOwnPtr<Core::Event>&& event)
{
m_thread_event_queue.post_event(receiver, move(event));
if (&m_thread_event_queue != &Core::ThreadEventQueue::current())
wake();
}
static void qt_timer_fired(int timer_id, Core::TimerShouldFireWhenNotVisible should_fire_when_not_visible, Core::Object& object)
{
if (should_fire_when_not_visible == Core::TimerShouldFireWhenNotVisible::No) {
if (!object.is_visible_for_timer_purposes())
return;
}
Core::TimerEvent event(timer_id);
object.dispatch_event(event);
}
int EventLoopManagerQt::register_timer(Core::Object& object, int milliseconds, bool should_reload, Core::TimerShouldFireWhenNotVisible should_fire_when_not_visible)
{
auto& thread_data = ThreadData::the();
auto timer = make<QTimer>();
timer->setInterval(milliseconds);
timer->setSingleShot(!should_reload);
auto timer_id = thread_data.timer_id_allocator.allocate();
auto weak_object = object.make_weak_ptr();
QObject::connect(timer, &QTimer::timeout, [timer_id, should_fire_when_not_visible, weak_object = move(weak_object)] {
auto object = weak_object.strong_ref();
if (!object)
return;
qt_timer_fired(timer_id, should_fire_when_not_visible, *object);
});
timer->start();
thread_data.timers.set(timer_id, move(timer));
return timer_id;
}
bool EventLoopManagerQt::unregister_timer(int timer_id)
{
auto& thread_data = ThreadData::the();
thread_data.timer_id_allocator.deallocate(timer_id);
return thread_data.timers.remove(timer_id);
}
static void qt_notifier_activated(Core::Notifier& notifier)
{
Core::NotifierActivationEvent event(notifier.fd());
notifier.dispatch_event(event);
}
void EventLoopManagerQt::register_notifier(Core::Notifier& notifier)
{
QSocketNotifier::Type type;
switch (notifier.type()) {
case Core::Notifier::Type::Read:
type = QSocketNotifier::Read;
break;
case Core::Notifier::Type::Write:
type = QSocketNotifier::Write;
break;
default:
TODO();
}
auto socket_notifier = make<QSocketNotifier>(notifier.fd(), type);
QObject::connect(socket_notifier, &QSocketNotifier::activated, [¬ifier] {
qt_notifier_activated(notifier);
});
ThreadData::the().notifiers.set(¬ifier, move(socket_notifier));
}
void EventLoopManagerQt::unregister_notifier(Core::Notifier& notifier)
{
ThreadData::the().notifiers.remove(¬ifier);
}
void EventLoopManagerQt::did_post_event()
{
m_process_core_events_timer.start();
}
EventLoopManagerQt::EventLoopManagerQt()
{
m_process_core_events_timer.setSingleShot(true);
m_process_core_events_timer.setInterval(0);
QObject::connect(&m_process_core_events_timer, &QTimer::timeout, [] {
Core::ThreadEventQueue::current().process();
});
}
EventLoopManagerQt::~EventLoopManagerQt() = default;
NonnullOwnPtr<Core::EventLoopImplementation> EventLoopManagerQt::make_implementation()
{
return adopt_own(*new EventLoopImplementationQt);
}
}
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