/**********************************************************************
 * File:        fpchop.h  (Formerly fp_chop.h)
 * Description: Code to chop fixed pitch text into character cells.
 * Author:      Ray Smith
 *
 * (C) Copyright 1993, Hewlett-Packard Ltd.
 ** Licensed under the Apache License, Version 2.0 (the "License");
 ** you may not use this file except in compliance with the License.
 ** You may obtain a copy of the License at
 ** http://www.apache.org/licenses/LICENSE-2.0
 ** Unless required by applicable law or agreed to in writing, software
 ** distributed under the License is distributed on an "AS IS" BASIS,
 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 ** See the License for the specific language governing permissions and
 ** limitations under the License.
 *
 **********************************************************************/

#ifndef           FPCHOP_H
#define           FPCHOP_H

#include          "params.h"
#include          "blobbox.h"

namespace tesseract {

class C_OUTLINE_FRAG : public ELIST_LINK
{
  public:
    C_OUTLINE_FRAG() {  //empty constructor
      steps = nullptr;
      stepcount = 0;
    }
    ~C_OUTLINE_FRAG () {
      delete [] steps;
    }
                                 //start coord
    C_OUTLINE_FRAG(ICOORD start_pt,
                   ICOORD end_pt,       //end coord
                   C_OUTLINE *outline,  //source of steps
                   int16_t start_index,
                   int16_t end_index);
                                 //other end
    C_OUTLINE_FRAG(C_OUTLINE_FRAG *head, int16_t tail_y);
    C_OUTLINE *close();  //copy to outline
    C_OUTLINE_FRAG & operator= ( //assign
      const C_OUTLINE_FRAG & src);

    ICOORD start;                //start coord
    ICOORD end;                  //end coord
    DIR128 *steps;                //step array
    int32_t stepcount;             //no of steps
    C_OUTLINE_FRAG *other_end;   //head if a tail
    int16_t ycoord;                //coord of cut pt

  private:
    // Copy constructor (currently unused, therefore private).
    C_OUTLINE_FRAG(const C_OUTLINE_FRAG& other);
};

ELISTIZEH(C_OUTLINE_FRAG)

extern
INT_VAR_H (textord_fp_chop_error, 2,
"Max allowed bending of chop cells");
extern
double_VAR_H (textord_fp_chop_snap, 0.5,
"Max distance of chop pt from vertex");

ROW *fixed_pitch_words(                 //find lines
                       TO_ROW *row,     //row to do
                       FCOORD rotation  //for drawing
                      );

void split_to_blob(                                 //split the blob
                   BLOBNBOX *blob,                  //blob to split
                   int16_t chop_coord,              //place to chop
                   float pitch_error,               //allowed deviation
                   C_OUTLINE_LIST *left_coutlines,  //for cblobs
                   C_OUTLINE_LIST *right_coutlines);

} // namespace tesseract

#endif