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/**********************************************************************
* File: ocrblock.h (Formerly block.h)
* Description: Page block class definition.
* Author: Ray Smith
* Created: Thu Mar 14 17:32:01 GMT 1991
*
* (C) Copyright 1991, 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 OCRBLOCK_H
#define OCRBLOCK_H
#include "img.h"
#include "ocrrow.h"
#include "pageblk.h"
#include "pdblock.h"
class BLOCK; //forward decl
ELISTIZEH_S (BLOCK)
class BLOCK:public ELIST_LINK, public PDBLK
//page block
{
friend class BLOCK_RECT_IT; //block iterator
//block label
friend void scan_hpd_blocks(const char *name,
PAGE_BLOCK_LIST *page_blocks, //head of full pag
inT32 &block_no, //no of blocks
BLOCK_IT *block_it);
friend BOOL8 read_vec_file( //read uscan output
STRING name, //basename of file
inT32 xsize, //page size //output list
inT32 ysize,
BLOCK_LIST *blocks);
friend BOOL8 read_pd_file( //read uscan output
STRING name, //basename of file
inT32 xsize, //page size //output list
inT32 ysize,
BLOCK_LIST *blocks);
public:
BLOCK() { //empty constructor
hand_block = NULL;
hand_poly = NULL;
}
BLOCK( //simple constructor
const char *name, //filename
BOOL8 prop, //proportional
inT16 kern, //kerning
inT16 space, //spacing
inT16 xmin, //bottom left
inT16 ymin,
inT16 xmax, //top right
inT16 ymax);
// void set_sides( //set vertex lists
// ICOORDELT_LIST *left, //list of left vertices
// ICOORDELT_LIST *right); //list of right vertices
~BLOCK () { //destructor
}
void set_stats( //set space size etc.
BOOL8 prop, //proportional
inT16 kern, //inter char size
inT16 space, //inter word size
inT16 ch_pitch) { //pitch if fixed
proportional = prop;
kerning = (inT8) kern;
spacing = space;
pitch = ch_pitch;
}
void set_xheight( //set char size
inT32 height) {
xheight = height;
}
void set_font_class( //set font class
inT16 font) {
font_class = font;
}
// TEXT_REGION* text_region()
// {
// return hand_block;
// }
// POLY_BLOCK* poly_block()
// {
// return hand_poly;
// }
BOOL8 prop() const { //return proportional
return proportional;
}
inT32 fixed_pitch() const { //return pitch
return pitch;
}
inT16 kern() const { //return kerning
return kerning;
}
inT16 font() const { //return font class
return font_class;
}
inT16 space() const { //return spacing
return spacing;
}
const char *name() const { //return filename
return filename.string ();
}
inT32 x_height() const { //return xheight
return xheight;
}
float cell_over_xheight() const {
return cell_over_xheight_;
}
void set_cell_over_xheight(float ratio) {
cell_over_xheight_ = ratio;
}
ROW_LIST *row_list() { //get rows
return &rows;
}
C_BLOB_LIST *blob_list() { //get blobs
return &c_blobs;
}
C_BLOB_LIST *reject_blobs() {
return &rej_blobs;
}
// void bounding_box( //get box
// ICOORD& bottom_left, //bottom left
// ICOORD& top_right) const //topright
// {
// bottom_left=box.botleft();
// top_right=box.topright();
// }
// const TBOX& bounding_box() const //get real box
// {
// return box;
// }
// BOOL8 contains( //is pt inside block
// ICOORD pt);
// void move( // reposition block
// const ICOORD vec); // by vector
void sort_rows(); //decreasing y order
void compress(); //shrink white space
void check_pitch(); //check proportional
void compress( //shrink white space
const ICOORD vec); //and move by vector
void print( //print summary/table
FILE *fp, //file to print on
BOOL8 dump); //dump whole table
// void plot( //draw histogram
// WINDOW window, //window to draw in
// inT32 serial, //serial number
// COLOUR colour); //colour to draw in
// void show( //show image
// IMAGE *image, //image to show
// WINDOW window); //window to show in
void prep_serialise() { //set ptrs to counts
filename.prep_serialise ();
rows.prep_serialise ();
c_blobs.prep_serialise ();
rej_blobs.prep_serialise ();
leftside.prep_serialise ();
rightside.prep_serialise ();
}
void dump( //write external bits
FILE *f) {
filename.dump (f);
rows.dump (f);
c_blobs.dump (f);
rej_blobs.dump (f);
leftside.dump (f);
rightside.dump (f);
if (hand_block != NULL)
hand_block->serialise (f);
}
void de_dump( //read external bits
FILE *f) {
filename.de_dump (f);
rows.de_dump (f);
c_blobs.de_dump (f);
rej_blobs.de_dump (f);
leftside.de_dump (f);
rightside.de_dump (f);
if (hand_block != NULL)
hand_block = TEXT_REGION::de_serialise (f);
}
//assignment
make_serialise (BLOCK) BLOCK & operator= (
const BLOCK & source); //from this
private:
BOOL8 proportional; //proportional
inT8 kerning; //inter blob gap
inT16 spacing; //inter word gap
inT16 pitch; //pitch of non-props
inT16 font_class; //correct font class
inT32 xheight; //height of chars
float cell_over_xheight_; // Ratio of cell height to xheight.
STRING filename; //name of block
// TEXT_REGION* hand_block; //if it exists
// POLY_BLOCK* hand_poly; //wierd as well
ROW_LIST rows; //rows in block
C_BLOB_LIST c_blobs; //before textord
C_BLOB_LIST rej_blobs; //duff stuff
// ICOORDELT_LIST leftside; //left side vertices
// ICOORDELT_LIST rightside; //right side vertices
// TBOX box; //bounding box
};
int decreasing_top_order( //
const void *row1,
const void *row2);
#endif
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