qwasmcompositor.h

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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
 
#ifndef QWASMCOMPOSITOR_H
#define QWASMCOMPOSITOR_H
 
#include "qwasmwindowstack.h"
 
#include <qpa/qplatformwindow.h>
 
#include <QMap>
#include <tuple>
 
QT_BEGIN_NAMESPACE
 
class QWasmWindow;
class QWasmScreen;
 
enum class QWasmWindowTreeNodeChangeType;
 
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);
 
    static bool releaseRequestUpdateHold();
 
    void requestUpdate();
    enum UpdateRequestDeliveryType { ExposeEventDelivery, UpdateRequestDelivery };
    void requestUpdateWindow(QWasmWindow *window, const QRect &updateRect, UpdateRequestDeliveryType updateType = ExposeEventDelivery);
 
    void handleBackingStoreFlush(QWindow *window, const QRect &updateRect);
    void onWindowTreeChanged(QWasmWindowTreeNodeChangeType changeType, QWasmWindow *window);
 
private:
    void frame(const QList<QWasmWindow *> &windows);
 
    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;
    int m_requestAnimationFrameId = -1;
    bool m_inDeliverUpdateRequest = false;
    static bool m_requestUpdateHoldEnabled;
};
 
QT_END_NAMESPACE
 
#endif