Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/wordrec/render.cpp @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1 /******************************************************************************
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2 *
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3 * File: render.cpp (Formerly render.c)
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4 * Description: Convert the various data type into line lists
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5 * Author: Mark Seaman, OCR Technology
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6 *
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7 * (c) Copyright 1989, Hewlett-Packard Company.
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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 // Include automatically generated configuration file if running autoconf.
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21 #ifdef HAVE_CONFIG_H
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22 # include "config_auto.h"
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23 #endif
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25 #include "render.h"
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27 #include "blobs.h"
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29 #include <cmath>
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31 namespace tesseract {
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33 /*----------------------------------------------------------------------
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34 V a r i a b l e s
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35 ----------------------------------------------------------------------*/
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36 ScrollView *blob_window = nullptr;
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38 ScrollView::Color color_list[] = {ScrollView::RED, ScrollView::CYAN, ScrollView::YELLOW,
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39 ScrollView::BLUE, ScrollView::GREEN, ScrollView::WHITE};
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41 BOOL_VAR(wordrec_display_all_blobs, 0, "Display Blobs");
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43 BOOL_VAR(wordrec_blob_pause, 0, "Blob pause");
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44
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45 /*----------------------------------------------------------------------
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46 F u n c t i o n s
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47 ----------------------------------------------------------------------*/
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48 #ifndef GRAPHICS_DISABLED
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49 /**********************************************************************
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50 * display_blob
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51 *
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52 * Macro to display blob in a window.
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53 **********************************************************************/
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54 void display_blob(TBLOB *blob, ScrollView::Color color) {
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55 /* Size of drawable */
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56 if (blob_window == nullptr) {
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57 blob_window = new ScrollView("Blobs", 520, 10, 500, 256, 2000, 256, true);
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58 } else {
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59 blob_window->Clear();
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60 }
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61
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62 render_blob(blob_window, blob, color);
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63 }
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64
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65 /**********************************************************************
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66 * render_blob
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67 *
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68 * Create a list of line segments that represent the expanded outline
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69 * that was supplied as input.
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70 **********************************************************************/
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71 void render_blob(ScrollView *window, TBLOB *blob, ScrollView::Color color) {
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72 /* No outline */
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73 if (!blob) {
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74 return;
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75 }
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76
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77 render_outline(window, blob->outlines, color);
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78 }
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79
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80 /**********************************************************************
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81 * render_edgepts
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82 *
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83 * Create a list of line segments that represent the expanded outline
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84 * that was supplied as input.
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85 **********************************************************************/
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86 void render_edgepts(ScrollView *window, EDGEPT *edgept, ScrollView::Color color) {
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87 if (!edgept) {
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88 return;
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89 }
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90
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91 float x = edgept->pos.x;
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92 float y = edgept->pos.y;
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93 EDGEPT *this_edge = edgept;
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94
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95 window->Pen(color);
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96 window->SetCursor(x, y);
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97 do {
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98 this_edge = this_edge->next;
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99 x = this_edge->pos.x;
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100 y = this_edge->pos.y;
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101 window->DrawTo(x, y);
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102 } while (edgept != this_edge);
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103 }
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104
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105 /**********************************************************************
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106 * render_outline
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107 *
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108 * Create a list of line segments that represent the expanded outline
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109 * that was supplied as input.
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110 **********************************************************************/
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111 void render_outline(ScrollView *window, TESSLINE *outline, ScrollView::Color color) {
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112 /* No outline */
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113 if (!outline) {
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114 return;
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115 }
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116 /* Draw Compact outline */
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117 if (outline->loop) {
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118 render_edgepts(window, outline->loop, color);
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119 }
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120 /* Add on next outlines */
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121 render_outline(window, outline->next, color);
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122 }
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123
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124 #endif // !GRAPHICS_DISABLED
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125
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126 } // namespace tesseract