#pragma once
 
#ifndef TOONZRASTERBRUSHTOOL_H
#define TOONZRASTERBRUSHTOOL_H
 
#include "tgeometry.h"
#include "tproperty.h"
#include "trasterimage.h"
#include "ttoonzimage.h"
#include "tstroke.h"
#include "toonz/strokegenerator.h"
 
#include "tools/tool.h"
#include "tools/cursors.h"
#include "mypainttoonzbrush.h"
 
#include <QCoreApplication>
#include <QRadialGradient>
#include <QElapsedTimer>
 
//--------------------------------------------------------------
 
//  Forward declarations
 
class TTileSetCM32;
class TTileSaverCM32;
class RasterStrokeGenerator;
class BluredBrush;
class ToonzRasterBrushToolNotifier;
 
//--------------------------------------------------------------
 
//************************************************************************
//  Toonz Raster Brush Data declaration
//************************************************************************
 
struct BrushData final : public TPersist {
  PERSIST_DECLARATION(BrushData)
  // frameRange, snapSensitivity and snap are not included
  // Those options are not really a part of the brush settings,
  // just the overall tool.
 
  std::wstring m_name;
  double m_min, m_max, m_smooth, m_hardness, m_opacityMin, m_opacityMax;
  bool m_pencil, m_pressure;
  int m_drawOrder;
  double m_modifierSize, m_modifierOpacity;
  bool m_modifierEraser, m_modifierLockAlpha;
 
  BrushData();
  BrushData(const std::wstring &name);
 
  bool operator<(const BrushData &other) const { return m_name < other.m_name; }
 
  void saveData(TOStream &os) override;
  void loadData(TIStream &is) override;
};
 
//************************************************************************
//   Toonz Raster Brush Preset Manager declaration
//************************************************************************
 
class BrushPresetManager {
  TFilePath m_fp;                 //!< Presets file path
  std::set<BrushData> m_presets;  //!< Current presets container
 
public:
  BrushPresetManager() {}
 
  void load(const TFilePath &fp);
  void save();
 
  const TFilePath &path() { return m_fp; };
  const std::set<BrushData> &presets() const { return m_presets; }
 
  void addPreset(const BrushData &data);
  void removePreset(const std::wstring &name);
};
 
//************************************************************************
//    Smooth Stroke declaration
//    Brush stroke smoothing buffer.
//************************************************************************
class SmoothStroke {
public:
  SmoothStroke() {}
  ~SmoothStroke() {}
 
  // begin stroke
  // smooth is smooth strength, from 0 to 100
  void beginStroke(int smooth);
  // add stroke point
  void addPoint(const TThickPoint &point);
  // end stroke
  void endStroke();
  // Get generated stroke points which has been smoothed.
  // Both addPoint() and endStroke() generate new smoothed points.
  // This method will removed generated points
  void getSmoothPoints(std::vector<TThickPoint> &smoothPoints);
  // Remove all points - used for straight lines
  void clearPoints();
 
private:
  void generatePoints();
 
private:
  int m_smooth;
  int m_outputIndex;
  int m_readIndex;
  std::vector<TThickPoint> m_rawPoints;
  std::vector<TThickPoint> m_outputPoints;
 
  int m_resampledIndex;
  std::vector<TThickPoint> m_resampledPoints;
};
//************************************************************************
//   Toonz Raster Brush Tool declaration
//************************************************************************
 
class ToonzRasterBrushTool final : public TTool, public RasterController {
  Q_DECLARE_TR_FUNCTIONS(ToonzRasterBrushTool)
 
  void updateCurrentStyle();
  double restartBrushTimer();
 
public:
  ToonzRasterBrushTool(std::string name, int targetType);
 
  ToolType getToolType() const override { return TTool::LevelWriteTool; }
 
  ToolOptionsBox *createOptionsBox() override;
 
  void updateTranslation() override;
 
  void onActivate() override;
  void onDeactivate() override;
 
  bool preLeftButtonDown() override;
  void leftButtonDown(const TPointD &pos, const TMouseEvent &e) override;
  void leftButtonDrag(const TPointD &pos, const TMouseEvent &e) override;
  void leftButtonUp(const TPointD &pos, const TMouseEvent &e) override;
  void mouseMove(const TPointD &pos, const TMouseEvent &e) override;
 
  void draw() override;
 
  void onEnter() override;
  void onLeave() override;
 
  int getCursorId() const override { return ToolCursor::PenCursor; }
 
  TPropertyGroup *getProperties(int targetType) override;
  bool onPropertyChanged(std::string propertyName) override;
  void onImageChanged() override;
  void setWorkAndBackupImages();
  void updateWorkAndBackupRasters(const TRect &rect);
 
  void initPresets();
  void loadPreset();
  void addPreset(QString name);
  void removePreset();
 
  void loadLastBrush();
 
  void finishRasterBrush(const TPointD &pos, double pressureVal);
  // return true if the pencil mode is active in the Brush / PaintBrush / Eraser
  // Tools.
  bool isPencilModeActive() override;
 
  void onColorStyleChanged();
  bool askRead(const TRect &rect) override;
  bool askWrite(const TRect &rect) override;
  bool isMyPaintStyleSelected() { return m_isMyPaintStyleSelected; }
 
protected:
  TPropertyGroup m_prop[2];
 
  TDoublePairProperty m_rasThickness;
  TDoubleProperty m_smooth;
  TDoubleProperty m_hardness;
  TEnumProperty m_preset;
  TEnumProperty m_drawOrder;
  TBoolProperty m_pencil;
  TBoolProperty m_pressure;
  TDoubleProperty m_modifierSize;
  TBoolProperty m_modifierLockAlpha;
 
  RasterStrokeGenerator *m_rasterTrack;
  TTileSetCM32 *m_tileSet;
  TTileSaverCM32 *m_tileSaver;
  TPixel32 m_currentColor;
  int m_styleId;
  double m_minThick, m_maxThick;
 
  int m_targetType;
  TPointD m_dpiScale,
      m_mousePos,  //!< Current mouse position, in world coordinates.
      m_brushPos;  //!< World position the brush will be painted at.
 
  BluredBrush *m_bluredBrush;
  QRadialGradient m_brushPad;
 
  TRasterCM32P m_backupRas;
  TRaster32P m_workRas;
 
  std::vector<TThickPoint> m_points;
  TRect m_strokeRect, m_lastRect,
      m_strokeSegmentRect;  // used with mypaint brush
 
  SmoothStroke m_smoothStroke;
 
  BrushPresetManager
      m_presetsManager;  //!< Manager for presets of this tool instance
 
  bool m_active, m_enabled,
      m_isPrompting,  //!< Whether the tool is prompting for spline
                      //! substitution.
      m_firstTime, m_presetsLoaded;
 
  /*---
作業中のFrameIdをクリック時に保存し、マウスリリース時（Undoの登録時）に別のフレームに
移動していたときの不具合を修正する。---*/
  TFrameId m_workingFrameId;
 
  ToonzRasterBrushToolNotifier *m_notifier;
  bool m_isMyPaintStyleSelected    = false;
  MyPaintToonzBrush *m_toonz_brush = 0;
  QElapsedTimer m_brushTimer;
  int m_minCursorThick, m_maxCursorThick;
 
  bool m_propertyUpdating = false;
 
  bool m_isStraight = false;
  TPointD m_firstPoint;
  TPointD m_lastPoint;
  double m_maxPressure = -1.0;
 
protected:
  static void drawLine(const TPointD &point, const TPointD &centre,
                       bool horizontal, bool isDecimal);
  static void drawEmptyCircle(TPointD point, int thick, bool isLxEven,
                              bool isLyEven, bool isPencil);
 
  TPointD getCenteredCursorPos(const TPointD &originalCursorPos);
};
 
//------------------------------------------------------------
 
class ToonzRasterBrushToolNotifier final : public QObject {
  Q_OBJECT
 
  ToonzRasterBrushTool *m_tool;
 
public:
  ToonzRasterBrushToolNotifier(ToonzRasterBrushTool *tool);
 
protected slots:
  // void onCanvasSizeChanged() { m_tool->onCanvasSizeChanged(); }
  void onColorStyleChanged() { m_tool->onColorStyleChanged(); }
};
 
#endif  // TOONZRASTERBRUSHTOOL_H