Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/ccstruct/ocrrow.h @ 29:f76e6575dca9 v1.26.4+1

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+++++ v1.26.4+1
author Franz Glasner <fzglas.hg@dom66.de>
date Fri, 19 Sep 2025 19:59:23 +0200
parents b50eed0cc0ef
children
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1 /**********************************************************************
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2 * File: ocrrow.h (Formerly row.h)
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3 * Description: Code for the ROW class.
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4 * Author: Ray Smith
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5 * Created: Tue Oct 08 15:58:04 BST 1991
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6 *
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7 * (C) Copyright 1991, Hewlett-Packard Ltd.
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8 ** Licensed under the Apache License, Version 2.0 (the "License");
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9 ** you may not use this file except in compliance with the License.
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10 ** You may obtain a copy of the License at
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11 ** http://www.apache.org/licenses/LICENSE-2.0
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12 ** Unless required by applicable law or agreed to in writing, software
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13 ** distributed under the License is distributed on an "AS IS" BASIS,
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14 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 ** See the License for the specific language governing permissions and
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16 ** limitations under the License.
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17 *
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18 **********************************************************************/
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20 #ifndef OCRROW_H
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21 #define OCRROW_H
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23 #include "elst.h" // for ELIST_ITERATOR, ELISTIZEH, ELIST_LINK
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24 #include "quspline.h" // for QSPLINE
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25 #include "rect.h" // for TBOX
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26 #include "scrollview.h" // for ScrollView, ScrollView::Color
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27 #include "werd.h" // for WERD_LIST
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29 #include <cstdint> // for int16_t, int32_t
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30 #include <cstdio> // for FILE
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32 namespace tesseract {
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34 class ICOORD;
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35 class TO_ROW;
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37 struct PARA;
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39 class ROW : public ELIST_LINK {
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40 friend void tweak_row_baseline(ROW *, double, double);
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41
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42 public:
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43 ROW() = default;
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44 ROW( // constructor
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45 int32_t spline_size, // no of segments
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46 int32_t *xstarts, // segment boundaries
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47 double *coeffs, // coefficients //ascender size
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48 float x_height, float ascenders,
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49 float descenders, // descender size
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50 int16_t kern, // char gap
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51 int16_t space); // word gap
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52 ROW( // constructor
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53 TO_ROW *row, // textord row
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54 int16_t kern, // char gap
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55 int16_t space); // word gap
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56
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57 WERD_LIST *word_list() { // get words
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58 return &words;
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59 }
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61 float base_line( // compute baseline
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62 float xpos) const { // at the position
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63 // get spline value
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64 return static_cast<float>(baseline.y(xpos));
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65 }
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66 float x_height() const { // return x height
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67 return xheight;
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68 }
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69 void set_x_height(float new_xheight) { // set x height
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70 xheight = new_xheight;
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71 }
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72 int32_t kern() const { // return kerning
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73 return kerning;
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74 }
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75 float body_size() const { // return body size
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76 return bodysize;
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77 }
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78 void set_body_size(float new_size) { // set body size
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79 bodysize = new_size;
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80 }
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81 int32_t space() const { // return spacing
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82 return spacing;
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83 }
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84 float ascenders() const { // return size
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85 return ascrise;
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86 }
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87 float descenders() const { // return size
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88 return descdrop;
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89 }
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90 TBOX bounding_box() const { // return bounding box
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91 return bound_box;
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92 }
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93 // Returns the bounding box including the desired combination of upper and
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94 // lower noise/diacritic elements.
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95 TBOX restricted_bounding_box(bool upper_dots, bool lower_dots) const;
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96
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97 void set_lmargin(int16_t lmargin) {
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98 lmargin_ = lmargin;
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99 }
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100 void set_rmargin(int16_t rmargin) {
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101 rmargin_ = rmargin;
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102 }
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103 int16_t lmargin() const {
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104 return lmargin_;
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105 }
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106 int16_t rmargin() const {
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107 return rmargin_;
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108 }
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109
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110 void set_has_drop_cap(bool has) {
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111 has_drop_cap_ = has;
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112 }
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113 bool has_drop_cap() const {
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114 return has_drop_cap_;
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115 }
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116
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117 void set_para(PARA *p) {
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118 para_ = p;
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119 }
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120 PARA *para() const {
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121 return para_;
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122 }
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123
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124 void recalc_bounding_box(); // recalculate BB
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125
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126 void move( // reposition row
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127 const ICOORD vec); // by vector
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128
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129 void print( // print
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130 FILE *fp) const; // file to print on
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131
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132 #ifndef GRAPHICS_DISABLED
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133 void plot( // draw one
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134 ScrollView *window, // window to draw in
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135 ScrollView::Color colour); // uniform colour
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136 void plot( // draw one
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137 ScrollView *window); // in rainbow colours
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138
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139 void plot_baseline( // draw the baseline
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140 ScrollView *window, // window to draw in
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141 ScrollView::Color colour) { // colour to draw
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142 // draw it
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143 baseline.plot(window, colour);
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144 }
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145 #endif // !GRAPHICS_DISABLED
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146 ROW &operator=(const ROW &source);
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147
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148 private:
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149 // Copy constructor (currently unused, therefore private).
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150 ROW(const ROW &source) = delete;
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151
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152 int32_t kerning; // inter char gap
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153 int32_t spacing; // inter word gap
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154 TBOX bound_box; // bounding box
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155 float xheight; // height of line
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156 float ascrise; // size of ascenders
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157 float descdrop; //-size of descenders
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158 float bodysize; // CJK character size. (equals to
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159 // xheight+ascrise by default)
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160 WERD_LIST words; // words
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161 QSPLINE baseline; // baseline spline
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162
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163 // These get set after blocks have been determined.
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164 bool has_drop_cap_;
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165 int16_t lmargin_; // Distance to left polyblock margin.
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166 int16_t rmargin_; // Distance to right polyblock margin.
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167
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168 // This gets set during paragraph analysis.
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169 PARA *para_; // Paragraph of which this row is part.
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170 };
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171
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172 ELISTIZEH(ROW)
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173
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174 } // namespace tesseract
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175
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176 #endif