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133 lines
6.2 KiB
C++
133 lines
6.2 KiB
C++
/**********************************************************************
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* File: fpchop.h (Formerly fp_chop.h)
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* Description: Code to chop fixed pitch text into character cells.
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* Author: Ray Smith
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* Created: Thu Sep 16 11:14:15 BST 1993
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*
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* (C) Copyright 1993, Hewlett-Packard Ltd.
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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** http://www.apache.org/licenses/LICENSE-2.0
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*
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**********************************************************************/
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#ifndef FPCHOP_H
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#define FPCHOP_H
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#include "params.h"
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#include "blobbox.h"
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class C_OUTLINE_FRAG:public ELIST_LINK
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{
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public:
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C_OUTLINE_FRAG() { //empty constructor
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steps = nullptr;
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stepcount = 0;
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}
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~C_OUTLINE_FRAG () {
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if (steps != nullptr)
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delete [] steps;
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}
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//start coord
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C_OUTLINE_FRAG(ICOORD start_pt,
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ICOORD end_pt, //end coord
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C_OUTLINE *outline, //source of steps
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int16_t start_index,
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int16_t end_index);
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//other end
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C_OUTLINE_FRAG(C_OUTLINE_FRAG *head, int16_t tail_y);
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C_OUTLINE *close(); //copy to outline
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C_OUTLINE_FRAG & operator= ( //assign
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const C_OUTLINE_FRAG & src);
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ICOORD start; //start coord
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ICOORD end; //end coord
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DIR128 *steps; //step array
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int32_t stepcount; //no of steps
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C_OUTLINE_FRAG *other_end; //head if a tail
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int16_t ycoord; //coord of cut pt
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private:
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};
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ELISTIZEH(C_OUTLINE_FRAG)
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extern
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INT_VAR_H (textord_fp_chop_error, 2,
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"Max allowed bending of chop cells");
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extern
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double_VAR_H (textord_fp_chop_snap, 0.5,
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"Max distance of chop pt from vertex");
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ROW *fixed_pitch_words( //find lines
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TO_ROW *row, //row to do
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FCOORD rotation //for drawing
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);
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WERD *add_repeated_word( //move repeated word
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WERD_IT *rep_it, //repeated words
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int16_t &rep_left, //left edge of word
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int16_t &prev_chop_coord, //previous word end
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uint8_t &blanks, //no of blanks
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float pitch, //char cell size
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WERD_IT *word_it //list of words
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);
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void split_to_blob( //split the blob
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BLOBNBOX *blob, //blob to split
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int16_t chop_coord, //place to chop
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float pitch_error, //allowed deviation
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C_OUTLINE_LIST *left_coutlines, //for cblobs
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C_OUTLINE_LIST *right_coutlines);
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void fixed_chop_cblob( //split the blob
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C_BLOB *blob, //blob to split
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int16_t chop_coord, //place to chop
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float pitch_error, //allowed deviation
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C_OUTLINE_LIST *left_outlines, //left half of chop
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C_OUTLINE_LIST *right_outlines //right half of chop
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);
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void fixed_split_coutline( //chop the outline
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C_OUTLINE *srcline, //source outline
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int16_t chop_coord, //place to chop
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float pitch_error, //allowed deviation
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C_OUTLINE_IT *left_it, //left half of chop
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C_OUTLINE_IT *right_it //right half of chop
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);
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BOOL8 fixed_chop_coutline( //chop the outline
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C_OUTLINE *srcline, //source outline
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int16_t chop_coord, //place to chop
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float pitch_error, //allowed deviation
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C_OUTLINE_FRAG_LIST *left_frags, //left half of chop
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C_OUTLINE_FRAG_LIST *right_frags //right half of chop
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);
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void save_chop_cfragment( //chop the outline
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int16_t head_index, //head of fragment
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ICOORD head_pos, //head of fragment
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int16_t tail_index, //tail of fragment
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ICOORD tail_pos, //tail of fragment
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C_OUTLINE *srcline, //source of edgesteps
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C_OUTLINE_FRAG_LIST *frags //fragment list
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);
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void add_frag_to_list( //ordered add
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C_OUTLINE_FRAG *frag, //fragment to add
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C_OUTLINE_FRAG_LIST *frags //fragment list
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);
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void close_chopped_cfragments( //chop the outline
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C_OUTLINE_FRAG_LIST *frags, //list to clear
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C_OUTLINE_LIST *children, //potential children
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float pitch_error, //allowed shrinkage
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C_OUTLINE_IT *dest_it //output list
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);
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C_OUTLINE *join_chopped_fragments( //join pieces
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C_OUTLINE_FRAG *bottom, //bottom of cut
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C_OUTLINE_FRAG *top //top of cut
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);
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void join_segments( //join pieces
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C_OUTLINE_FRAG *bottom, //bottom of cut
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C_OUTLINE_FRAG *top //top of cut
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);
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#endif
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