#pragma once

#ifndef MYPAINTTOONZBRUSH_H

#define MYPAINTTOONZBRUSH_H

#include <toonz/mypaint.h>

#include "traster.h"

#include "trastercm.h"

#include "tcurves.h"

#include <QPainter>

#include <QImage>

class RasterController {

public:

  virtual ~RasterController() {}

  virtual bool askRead(const TRect &rect) { return true; }

  virtual bool askWrite(const TRect &rect) { return true; }

};

//=======================================================

//

// Raster32PMyPaintSurface

//

//=======================================================

class Raster32PMyPaintSurface : public mypaint::Surface {

private:

  class Internal;

  TRaster32P m_ras;

  RasterController *controller;

  Internal *internal;

  inline static void readPixel(const void *pixelPtr, float &colorR,

                               float &colorG, float &colorB, float &colorA) {

    const TPixel32 &pixel = *(const TPixel32 *)pixelPtr;

    colorR                = (float)pixel.r / (float)TPixel32::maxChannelValue;

    colorG                = (float)pixel.g / (float)TPixel32::maxChannelValue;

    colorB                = (float)pixel.b / (float)TPixel32::maxChannelValue;

    colorA                = (float)pixel.m / (float)TPixel32::maxChannelValue;

  }

  inline static void writePixel(void *pixelPtr, float colorR, float colorG,

                                float colorB, float colorA) {

    TPixel32 &pixel = *(TPixel32 *)pixelPtr;

    pixel.r = (TPixel32::Channel)roundf(colorR * TPixel32::maxChannelValue);

    pixel.g = (TPixel32::Channel)roundf(colorG * TPixel32::maxChannelValue);

    pixel.b = (TPixel32::Channel)roundf(colorB * TPixel32::maxChannelValue);

    pixel.m = (TPixel32::Channel)roundf(colorA * TPixel32::maxChannelValue);

  }

  inline static bool askRead(void *surfaceController,

                             const void * /* surfacePointer */, int x0, int y0,

                             int x1, int y1) {

    Raster32PMyPaintSurface &owner =

        *((Raster32PMyPaintSurface *)surfaceController);

    return !owner.controller ||

           owner.controller->askRead(TRect(x0, y0, x1, y1));

  }

  inline static bool askWrite(void *surfaceController,

                              const void * /* surfacePointer */, int x0, int y0,

                              int x1, int y1) {

    Raster32PMyPaintSurface &owner =

        *((Raster32PMyPaintSurface *)surfaceController);

    return !owner.controller ||

           owner.controller->askWrite(TRect(x0, y0, x1, y1));

  }

public:

  explicit Raster32PMyPaintSurface(const TRaster32P &ras);

  explicit Raster32PMyPaintSurface(const TRaster32P &ras,

                                   RasterController &controller);

  ~Raster32PMyPaintSurface();

  bool getColor(float x, float y, float radius, float &colorR, float &colorG,

                float &colorB, float &colorA) override;

  bool drawDab(const mypaint::Dab &dab) override;

  bool getAntialiasing() const;

  void setAntialiasing(bool value);

};

//=======================================================

//

// MyPaintToonzBrush

//

//=======================================================

class MyPaintToonzBrush {

private:

  struct Params {

    union {

      struct {

        double x, y, pressure, time;

      };

      struct {

        double values[4];

      };

    };

    inline explicit Params(double x = 0.0, double y = 0.0,

                           double pressure = 0.0, double time = 0.0)

        : x(x), y(y), pressure(pressure), time(time) {}

    inline void setMedian(Params &a, Params &b) {

      for (int i  = 0; i < (int)sizeof(values) / sizeof(values[0]); ++i)

        values[i] = 0.5 * (a.values[i] + b.values[i]);

    }

  };

  struct Segment {

    Params p1, p2;

  };

  TRaster32P m_ras;

  Raster32PMyPaintSurface m_mypaintSurface;

  mypaint::Brush brush;

  bool reset;

  Params previous, current;

  bool interpolation;

public:

  MyPaintToonzBrush(

    const TRaster32P &ras,

    RasterController &controller,

    const mypaint::Brush &brush,

    bool interpolation = false );

  void beginStroke();

  void endStroke();

  void strokeTo(const TPointD &p, double pressure, double dtime);

  // colormapped

  void updateDrawing(const TRasterCM32P rasCM, const TRasterCM32P rasBackupCM,

                     const TRect &bbox, int styleId, bool lockAlpha) const;

};

#endif  // T_BLUREDBRUSH