#pragma once

#include <QImage>

#include <QQuickItem>

#include <QQuickWindow>

class TiledImageItem : public QQuickItem {

  Q_OBJECT

  QML_ELEMENT

  Q_PROPERTY(

      int tileSize READ tileSize WRITE setTileSize NOTIFY tileSizeChanged FINAL)

 public:

  explicit TiledImageItem(QQuickItem *parent = nullptr);

  ~TiledImageItem();

  void setImageData(int width, int height, uchar *pixels,

                    QImage::Format format);

  int tileSize() const;

  void setTileSize(int newTileSize);

  Q_INVOKABLE void test(const QString &fileName);

 protected:

  QSGNode *updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *) override;

 Q_SIGNALS:

  void tileSizeChanged();

 private:

  Q_DISABLE_COPY_MOVE(TiledImageItem)

  QImage m_texture;

  bool m_dirty;

  struct Tile {

    Tile() = default;

    Tile(Tile &&other) noexcept;

    ~Tile() = default;

    QRectF outRect;

    QImage image;

    bool dirty = false;

    std::unique_ptr<QSGImageNode> node;

    std::unique_ptr<QSGTexture, QScopedPointerDeleteLater> texture;

  };

  void buildTiles();

  int m_tileSize{512};

  std::vector<Tile> m_tiles;

};