
/* 
A* -------------------------------------------------------------------
B* This file contains source code for the PyMOL computer program
C* copyright 1998-2000 by Warren Lyford Delano of DeLano Scientific. 
D* -------------------------------------------------------------------
E* It is unlawful to modify or remove this copyright notice.
F* -------------------------------------------------------------------
G* Please see the accompanying LICENSE file for further information. 
H* -------------------------------------------------------------------
I* Additional authors of this source file include:
-* 
-* 
-*
Z* -------------------------------------------------------------------
*/
#ifndef _H_Color
#define _H_Color

#include <unordered_map>
#include <string>

#include "pymol/zstring_view.h"

#include"os_python.h"

#include"Rep.h"
#include"Vector.h"
#include"PyMOLGlobals.h"
#include"Word.h"

struct ObjectGadgetRamp;

#define cColorGadgetRamp  1

#define cColorDefault     -1
#define cColorNewAuto     -2
#define cColorCurAuto     -3
#define cColorAtomic      -4
#define cColorObject      -5
#define cColorFront       -6
#define cColorBack        -7

#define cColorExtCutoff (-10)

#define cColor_TRGB_Bits  0x40000000
#define cColor_TRGB_Mask  0xC0000000

struct ColorRec {
  ColorRec() = delete;
  ColorRec(const char* name)
      : Name(name)
  {
  }

  const char* Name = nullptr;
  Vector3f Color;
  Vector3f LutColor;
  bool LutColorFlag = false;
  bool Custom = false;
  bool Fixed = false;

  /* not saved */
  int old_session_index = 0;
};

struct ExtRec {
  const char* Name = nullptr;
  ObjectGadgetRamp* Ptr = nullptr;
  /* not saved */
  int old_session_index;
};

struct CColor {
  using ColorIdx = int;

  std::vector<ColorRec> Color;

  std::vector<ExtRec> Ext;

  int LUTActive{};
  std::vector<unsigned int> ColorTable{};
  float Gamma = 1.0f;
  int BigEndian{};
  std::unordered_map<std::string, ColorIdx> Idx;
  float RGBColor[3]{};            /* save global float for returning (float*) */
  char RGBName[11]{}; // "0xTTRRGGBB"
  /* not stored */
  bool HaveOldSessionColors = false;
  bool HaveOldSessionExtColors = false;
  float Front[3] { 1.0f, 1.0f, 1.0f };
  float Back[3]{};
};

int ColorInit(PyMOLGlobals * G);
void ColorFree(PyMOLGlobals * G);

int ColorGetNext(PyMOLGlobals * G);
int ColorGetCurrent(PyMOLGlobals * G);
int ColorGetIndex(PyMOLGlobals * G, const char *name);
int ColorConvertOldSessionIndex(PyMOLGlobals * G, int index);
void ColorUpdateFront(PyMOLGlobals * G, const float *back);
void ColorUpdateFrontFromSettings(PyMOLGlobals * G);

const float *ColorGet(PyMOLGlobals * G, int index);   /* pointer maybe invalid after creating a new color */
const float *ColorGetRaw(PyMOLGlobals * G, int index);        /* pointer maybe invalid after creating a new color */

const float *ColorGetSpecial(PyMOLGlobals * G, int index);
const float *ColorGetNamed(PyMOLGlobals * G, const char *name);
void ColorDef(PyMOLGlobals * G, const char *name, const float *v, int mode, int quiet);
int ColorGetNColor(PyMOLGlobals * G);
const char *ColorGetName(PyMOLGlobals * G, int index);
int ColorGetStatus(PyMOLGlobals * G, int index);
void ColorReset(PyMOLGlobals * G);

int ColorGetRamped(PyMOLGlobals * G, int index, const float *vertex, float *color, int state);
int ColorCheckRamped(PyMOLGlobals * G, int index);
bool ColorGetCheckRamped(PyMOLGlobals * G, int index, const float *vertex, float *color, int state);

struct ObjectGadgetRamp *ColorGetRamp(PyMOLGlobals * G, int index);

void ColorRegisterExt(PyMOLGlobals* G, const char* name, ObjectGadgetRamp*);
void ColorForgetExt(PyMOLGlobals * G, const char *name);

/**
 * Renames a color extension
 *
 * @param oldName: Old Ext name
 * @param newName: New Ext name
 */
void ColorRenameExt(PyMOLGlobals* G, pymol::zstring_view oldName, pymol::zstring_view newName);

PyObject *ColorAsPyList(PyMOLGlobals * G);
int ColorFromPyList(PyMOLGlobals * G, PyObject * list, int partial_restore);

int ColorExtFromPyList(PyMOLGlobals * G, PyObject * list, int partial_restore);
PyObject *ColorExtAsPyList(PyMOLGlobals * G);
int ColorTableLoad(PyMOLGlobals * G, const char *fname, float gamma, int quiet);
void ColorUpdateFromLut(PyMOLGlobals * G, int index);
int ColorLookupColor(PyMOLGlobals * G, float *color);
void ColorGetBkrdContColor(PyMOLGlobals * G, float *rgb, int invert_flag);
unsigned int ColorGet32BitWord(PyMOLGlobals * G, const float *rgba);
int ColorGetEncoded(PyMOLGlobals * G, int index, float *color);
int Color3fToInt(PyMOLGlobals * G, const float *rgb);

#endif
