qohosegl.h - mozsearch

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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 QOHOSEGL_H

#define QOHOSEGL_H

#include "EGL/egl.h"

#include "EGL/eglplatform.h"

#include <GLES3/gl3.h>

#include <QtCore/qsharedpointer.h>

#include <QtCore/qglobal.h>

#include <QtCore/qsize.h>

#include <optional>

QT_BEGIN_NAMESPACE

class QOhosEGLSurface

public:

    enum class SurfaceFlagBits {

        PreserveBufferContentsOnSwap = 1 << 0,

};

    Q_DECLARE_FLAGS(SurfaceFlags, SurfaceFlagBits)

    QOhosEGLSurface() = default;

    QOhosEGLSurface(const QOhosEGLSurface&) = delete;

    QOhosEGLSurface& operator=(const QOhosEGLSurface&) = delete;

    QOhosEGLSurface(QOhosEGLSurface &&) = delete;

    QOhosEGLSurface& operator=(QOhosEGLSurface &&) = delete;

    ~QOhosEGLSurface();

    EGLSurface tryGetOrCreateEGLWindowSurface(

        EGLDisplay display, EGLConfig config, bool swappingBuffers, SurfaceFlags flags = {});

    void setNativeWindowSurface(

        EGLNativeWindowType nativeWindow, const std::optional<QSize> &optSurfaceSize);

    SurfaceFlags currentSurfaceFlags() const;

private:

    void cleanup();

    void tryCreateSurface(EGLDisplay display, EGLConfig config, SurfaceFlags surfaceFlags);

    std::optional<QSize> currentSurfaceSize() const;

    EGLDisplay m_refCurrentDisplay = EGL_NO_DISPLAY;

    EGLConfig m_refCurrentConfig = nullptr;

    EGLNativeWindowType m_refCurrentNativeWindow = nullptr;

    EGLNativeWindowType m_refTargetNativeWindow = nullptr;

    EGLSurface m_ownEglSurface = EGL_NO_SURFACE;

    SurfaceFlags m_currentSurfaceFlags = {};

    std::optional<QSize> m_targetSurfaceSize;

};

QT_END_NAMESPACE

#endif // QOHOSEGL_H