Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/ccstruct/ocrrow.cpp @ 46:7ee69f120f19 default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2
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1 /**********************************************************************
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2 * File: ocrrow.cpp (Formerly row.c)
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3 * Description: Code for the ROW class.
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4 * Author: Ray Smith
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5 *
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6 * (C) Copyright 1991, Hewlett-Packard Ltd.
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7 ** Licensed under the Apache License, Version 2.0 (the "License");
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8 ** you may not use this file except in compliance with the License.
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9 ** You may obtain a copy of the License at
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10 ** http://www.apache.org/licenses/LICENSE-2.0
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11 ** Unless required by applicable law or agreed to in writing, software
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12 ** distributed under the License is distributed on an "AS IS" BASIS,
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13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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14 ** See the License for the specific language governing permissions and
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15 ** limitations under the License.
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16 *
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17 **********************************************************************/
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18
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19 // Include automatically generated configuration file if running autoconf.
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20 #ifdef HAVE_CONFIG_H
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21 # include "config_auto.h"
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22 #endif
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23
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24 #include "blobbox.h"
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25 #include "ocrrow.h"
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26
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27 namespace tesseract {
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28
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29 /**********************************************************************
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30 * ROW::ROW
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31 *
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32 * Constructor to build a ROW. Only the stats stuff are given here.
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33 * The words are added directly.
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34 **********************************************************************/
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35 ROW::ROW( // constructor
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36 int32_t spline_size, // no of segments
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37 int32_t *xstarts, // segment boundaries
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38 double *coeffs, // coefficients
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39 float x_height, // line height
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40 float ascenders, // ascender size
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41 float descenders, // descender drop
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42 int16_t kern, // char gap
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43 int16_t space // word gap
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44 )
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45 : baseline(spline_size, xstarts, coeffs), para_(nullptr) {
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46 kerning = kern; // just store stuff
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47 spacing = space;
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48 xheight = x_height;
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49 ascrise = ascenders;
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50 bodysize = 0.0f;
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51 descdrop = descenders;
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52 has_drop_cap_ = false;
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53 lmargin_ = 0;
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54 rmargin_ = 0;
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55 }
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56
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57 /**********************************************************************
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58 * ROW::ROW
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59 *
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60 * Constructor to build a ROW. Only the stats stuff are given here.
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61 * The words are added directly.
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62 **********************************************************************/
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63
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64 ROW::ROW( // constructor
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65 TO_ROW *to_row, // source row
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66 int16_t kern, // char gap
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67 int16_t space // word gap
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68 )
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69 : para_(nullptr) {
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70 kerning = kern; // just store stuff
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71 spacing = space;
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72 xheight = to_row->xheight;
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73 bodysize = to_row->body_size;
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74 ascrise = to_row->ascrise;
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75 descdrop = to_row->descdrop;
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76 baseline = to_row->baseline;
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77 has_drop_cap_ = false;
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78 lmargin_ = 0;
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79 rmargin_ = 0;
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80 }
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81
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82 // Returns the bounding box including the desired combination of upper and
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83 // lower noise/diacritic elements.
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84 TBOX ROW::restricted_bounding_box(bool upper_dots, bool lower_dots) const {
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85 TBOX box;
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86 // This is a read-only iteration of the words in the row.
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87 WERD_IT it(const_cast<WERD_LIST *>(&words));
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88 for (it.mark_cycle_pt(); !it.cycled_list(); it.forward()) {
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89 box += it.data()->restricted_bounding_box(upper_dots, lower_dots);
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90 }
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91 return box;
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92 }
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93
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94 /**********************************************************************
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95 * ROW::recalc_bounding_box
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96 *
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97 * Set the bounding box correctly
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98 **********************************************************************/
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99
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100 void ROW::recalc_bounding_box() { // recalculate BB
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parents:
diff changeset
101 WERD *word; // current word
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parents:
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102 WERD_IT it = &words; // words of ROW
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parents:
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103 int16_t left; // of word
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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104 int16_t prev_left; // old left
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parents:
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105
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parents:
diff changeset
106 if (!it.empty()) {
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parents:
diff changeset
107 word = it.data();
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parents:
diff changeset
108 prev_left = word->bounding_box().left();
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parents:
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109 it.forward();
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parents:
diff changeset
110 while (!it.at_first()) {
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parents:
diff changeset
111 word = it.data();
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parents:
diff changeset
112 left = word->bounding_box().left();
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parents:
diff changeset
113 if (left < prev_left) {
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
114 it.move_to_first();
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parents:
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115 // words in BB order
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parents:
diff changeset
116 it.sort(word_comparator);
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117 break;
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118 }
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119 prev_left = left;
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parents:
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120 it.forward();
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parents:
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121 }
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parents:
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122 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
123 for (it.mark_cycle_pt(); !it.cycled_list(); it.forward()) {
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parents:
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124 word = it.data();
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parents:
diff changeset
125 if (it.at_first()) {
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126 word->set_flag(W_BOL, true);
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parents:
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127 } else {
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parents:
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128 // not start of line
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parents:
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129 word->set_flag(W_BOL, false);
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parents:
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130 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
131 if (it.at_last()) {
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parents:
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132 word->set_flag(W_EOL, true);
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parents:
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133 } else {
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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134 // not end of line
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parents:
diff changeset
135 word->set_flag(W_EOL, false);
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parents:
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136 }
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parents:
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137 // extend BB as reqd
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parents:
diff changeset
138 bound_box += word->bounding_box();
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parents:
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139 }
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parents:
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140 }
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parents:
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141
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parents:
diff changeset
142 /**********************************************************************
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
143 * ROW::move
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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144 *
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parents:
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145 * Reposition row by vector
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parents:
diff changeset
146 **********************************************************************/
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parents:
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147
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parents:
diff changeset
148 void ROW::move( // reposition row
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parents:
diff changeset
149 const ICOORD vec // by vector
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parents:
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150 ) {
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parents:
diff changeset
151 WERD_IT it(&words); // word iterator
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parents:
diff changeset
152
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parents:
diff changeset
153 for (it.mark_cycle_pt(); !it.cycled_list(); it.forward()) {
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parents:
diff changeset
154 it.data()->move(vec);
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parents:
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155 }
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parents:
diff changeset
156
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parents:
diff changeset
157 bound_box.move(vec);
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
158 baseline.move(vec);
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parents:
diff changeset
159 }
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parents:
diff changeset
160
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
161 /**********************************************************************
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
162 * ROW::print
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
163 *
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
164 * Display members
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
165 **********************************************************************/
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
166
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
167 void ROW::print( // print
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
168 FILE *fp // file to print on
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parents:
diff changeset
169 ) const {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
diff changeset
170 tprintf("Kerning= %d\n", kerning);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
171 tprintf("Spacing= %d\n", spacing);
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
172 bound_box.print();
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
173 tprintf("Xheight= %f\n", xheight);
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
174 tprintf("Ascrise= %f\n", ascrise);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
175 tprintf("Descdrop= %f\n", descdrop);
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
176 tprintf("has_drop_cap= %d\n", has_drop_cap_);
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
177 tprintf("lmargin= %d, rmargin= %d\n", lmargin_, rmargin_);
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
178 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
179
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parents:
diff changeset
180 /**********************************************************************
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
181 * ROW::plot
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
182 *
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
183 * Draw the ROW in the given colour.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
184 **********************************************************************/
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
185
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
186 #ifndef GRAPHICS_DISABLED
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
187 void ROW::plot( // draw it
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
188 ScrollView *window, // window to draw in
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
189 ScrollView::Color colour // colour to draw in
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
190 ) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
191 WERD *word; // current word
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
192 WERD_IT it = &words; // words of ROW
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
193
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
194 for (it.mark_cycle_pt(); !it.cycled_list(); it.forward()) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
195 word = it.data();
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
196 word->plot(window, colour); // all in one colour
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
197 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
198 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
199
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
200 /**********************************************************************
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
201 * ROW::plot
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
202 *
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
203 * Draw the ROW in rainbow colours.
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204 **********************************************************************/
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205
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206 void ROW::plot( // draw it
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207 ScrollView *window // window to draw in
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208 ) {
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209 WERD *word; // current word
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210 WERD_IT it = &words; // words of ROW
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211
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212 for (it.mark_cycle_pt(); !it.cycled_list(); it.forward()) {
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213 word = it.data();
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214 word->plot(window); // in rainbow colours
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215 }
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216 }
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217 #endif // !GRAPHICS_DISABLED
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218
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219 /**********************************************************************
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220 * ROW::operator=
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221 *
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222 * Assign rows by duplicating the row structure but NOT the WERDLIST
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223 **********************************************************************/
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224
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225 ROW &ROW::operator=(const ROW &source) {
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226 this->ELIST_LINK::operator=(source);
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227 kerning = source.kerning;
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228 spacing = source.spacing;
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229 xheight = source.xheight;
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230 bodysize = source.bodysize;
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231 ascrise = source.ascrise;
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232 descdrop = source.descdrop;
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233 if (!words.empty()) {
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234 words.clear();
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235 }
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236 baseline = source.baseline; // QSPLINES must do =
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237 bound_box = source.bound_box;
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238 has_drop_cap_ = source.has_drop_cap_;
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239 lmargin_ = source.lmargin_;
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240 rmargin_ = source.rmargin_;
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241 para_ = source.para_;
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242 return *this;
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243 }
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244
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245 } // namespace tesseract