qwasmcompositor.h - mozsearch

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// Copyright (C) 2018 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

// Qt-Security score:significant reason:default

#ifndef QWASMCOMPOSITOR_H

#define QWASMCOMPOSITOR_H

#include "qwasmwindowstack.h"

#include <qpa/qplatformwindow.h>

#include <private/qwasmsuspendresumecontrol_p.h>

#include <QMap>

#include <tuple>

#include <emscripten/val.h>

QT_BEGIN_NAMESPACE

class QWasmWindow;

class QWasmScreen;

class QWasmCompositor final : public QObject

    Q_OBJECT

public:

    QWasmCompositor(QWasmScreen *screen);

    ~QWasmCompositor() final;

    void setVisible(QWasmWindow *window, bool visible);

    void onScreenDeleting();

    QWasmScreen *screen();

    void setEnabled(bool enabled);

    void requestUpdate();

    enum UpdateRequestDeliveryType { ExposeEventDelivery, UpdateRequestDelivery };

    void requestUpdateWindow(QWasmWindow *window, const QRect &updateRect, UpdateRequestDeliveryType updateType = ExposeEventDelivery);

    void handleBackingStoreFlush(QWindow *window, const QRect &updateRect);

    void onWindowAdded(QWasmWindow *window);

    void onWindowRemoved(QWasmWindow *window);

private:

    void frame(const QList<QWasmWindow *> &windows);

    void updateEnabledForWindows();

    void deregisterEventHandlers();

    void deliverUpdateRequests();

    void deliverUpdateRequest(QWasmWindow *window, const QRect &updateRect, UpdateRequestDeliveryType updateType);

    bool m_isEnabled = true;

    QMap<QWasmWindow *, std::tuple<QRect, UpdateRequestDeliveryType>> m_requestUpdateWindows;

    uint32_t m_drawCallbackHandle = 0;

    bool m_inDeliverUpdateRequest = false;

};

QT_END_NAMESPACE

#endif