/******************************************************************************
**
** Copyright (C) 2020 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Quick Ultralite module.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
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** $QT_END_LICENSE$
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******************************************************************************/

#include <qul/singleton.h>
#include <qul/image.h>
#include <qul/imageprovider.h>
#include <qul/eventqueue.h>
#include <qul/timer.h>

#include <string>

struct MyImageLoadedEvent
{
    MyImageLoadedEvent(Qul::Image &image)
        : sharedImage(image)
    {}

    Qul::SharedImage sharedImage;
};

struct MyImageProvider : public Qul::ImageProvider, public Qul::EventQueue<MyImageLoadedEvent *>
{
    Qul::SharedImage requestImage(const char *imageName, size_t imageNameLength) QUL_DECL_OVERRIDE;

    void onEvent(MyImageLoadedEvent *const &event) QUL_DECL_OVERRIDE;
    void onEventDiscarded(MyImageLoadedEvent *const &event) QUL_DECL_OVERRIDE;

    struct Timeout
    {
        MyImageProvider *object;
        void operator()();
    };

private:
    Qul::Timer m_asyncLoadTimer;
    Qul::SharedImage sharedImage;
    int loadSteps;
    int currentLoadStep;
    int colors[3];
};