qt-everywhere-src-5.14.1/qtbase/src/plugins/platforms/wasm/qwasmeventdispatcher.h

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#ifndef QWASMEVENTDISPATCHER_H
#define QWASMEVENTDISPATCHER_H

#include <QtCore/qhash.h>
#include <QtCore/qloggingcategory.h>
#include <QtEventDispatcherSupport/private/qunixeventdispatcher_qpa_p.h>

QT_BEGIN_NAMESPACE

class QWasmEventDispatcherPrivate;

class QWasmEventDispatcher : public QUnixEventDispatcherQPA
{
    Q_DECLARE_PRIVATE(QWasmEventDispatcher)
public:
    explicit QWasmEventDispatcher(QObject *parent = nullptr);
    ~QWasmEventDispatcher();

    static bool registerRequestUpdateCallback(std::function<void(void)> callback);
    static void maintainTimers();

protected:
    bool processEvents(QEventLoop::ProcessEventsFlags flags) override;
    void doMaintainTimers();
    void wakeUp() override;
    static void mainThreadWakeUp(void *eventDispatcher);

private:
    bool m_hasMainLoop = false;
    bool m_hasZeroTimer = false;
    uint64_t m_currentTargetTime = std::numeric_limits<uint64_t>::max();
    QVector<std::function<void(void)>> m_requestUpdateCallbacks;
};

QT_END_NAMESPACE

#endif