/**
 * Copyright (c) 2021 Alban Fichet <alban dot fichet at gmx dot fr>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following
 * disclaimer in the documentation and/or other materials provided
 * with the distribution.
 *  * Neither the name of the organization(s) nor the names of its
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#include <QFutureWatcher>
#include <QImage>
#include <QObject>
#include <QRect>
#include <QVector>
#include <vector>

class FramebufferModel: public QObject
{
    Q_OBJECT

  public:
    FramebufferModel(QObject* parent = nullptr);
    virtual ~FramebufferModel();

    const QImage& getLoadedImage() const { return m_image; }

    bool isImageLoaded() const { return m_isImageLoaded; }

    int   width() const { return m_width; }
    int   height() const { return m_height; }
    float pixelAspectRatio() const { return m_pixelAspectRatio; }

    QRect getDisplayWindow() const;
    QRect getDataWindow() const;

    virtual std::string getColorInfo(int x, int y) const = 0;

  signals:
    void imageChanged();
    void imageLoaded();
    void exposureChanged(double exposure);
    void loadFailed(QString message);

  protected:
    std::vector<float> m_pixelBuffer;
    QImage             m_image;

    // Right now, the width and height are defined as Vec2i in OpenEXR
    // i.e. int type.
    int m_width, m_height;

    bool m_isImageLoaded;

    double m_exposure;

    QFutureWatcher<void>* m_imageLoadingWatcher;
    QFutureWatcher<void>* m_imageEditingWatcher;

    QRect m_dataWindow;
    QRect m_displayWindow;
    float m_pixelAspectRatio;
};
