qwasmanimationdriver_p.h

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// Copyright (C) 2025 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QWASMANIMATIONDRIVER_P_H
#define QWASMANIMATIONDRIVER_P_H
 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
 
#include <QtCore/private/qglobal_p.h>
#include <QtCore/qabstractanimation.h>
#include <QtCore/qtimer.h>
 
#include <memory>
 
QT_BEGIN_NAMESPACE
 
class QUnifiedTimer;
 
class Q_CORE_EXPORT QWasmAnimationDriver : public QAnimationDriver
{
    Q_OBJECT
public:
    QWasmAnimationDriver(QUnifiedTimer *unifiedTimer);
    ~QWasmAnimationDriver() override;
 
    qint64 elapsed() const override;
 
protected:
    void start() override;
    void stop() override;
 
private:
    void handleAnimationFrame(double timestamp);
    void handleFallbackTimeout();
    double getCurrentTimeFromTimeline() const;
 
    QTimer fallbackTimer;
    uint32_t m_animateCallbackHandle = 0;
    double m_startTimestamp = 0;
    double m_currentTimestamp = 0;
};
 
QT_END_NAMESPACE
 
#endif // QWASMANIMATIONDRIVER_P_H