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

>>>>> 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
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1 /////////////////////////////////////////////////////////////////////
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2 // File: ocrpara.cpp
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3 // Description: OCR Paragraph Output Type
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4 // Author: David Eger
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5 //
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6 // (C) Copyright 2010, Google Inc.
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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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19 #include "ocrpara.h"
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21 #include "host.h" // For NearlyEqual()
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23 #include <cstdio>
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25 namespace tesseract {
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27 using tesseract::JUSTIFICATION_CENTER;
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28 using tesseract::JUSTIFICATION_LEFT;
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29 using tesseract::JUSTIFICATION_RIGHT;
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30 using tesseract::JUSTIFICATION_UNKNOWN;
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31
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32 static const char *ParagraphJustificationToString(tesseract::ParagraphJustification justification) {
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33 switch (justification) {
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34 case JUSTIFICATION_LEFT:
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35 return "LEFT";
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36 case JUSTIFICATION_RIGHT:
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37 return "RIGHT";
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38 case JUSTIFICATION_CENTER:
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39 return "CENTER";
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40 default:
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41 return "UNKNOWN";
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42 }
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43 }
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44
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45 bool ParagraphModel::ValidFirstLine(int lmargin, int lindent, int rindent, int rmargin) const {
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46 switch (justification_) {
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47 case JUSTIFICATION_LEFT:
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48 return NearlyEqual(lmargin + lindent, margin_ + first_indent_, tolerance_);
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49 case JUSTIFICATION_RIGHT:
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50 return NearlyEqual(rmargin + rindent, margin_ + first_indent_, tolerance_);
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51 case JUSTIFICATION_CENTER:
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52 return NearlyEqual(lindent, rindent, tolerance_ * 2);
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53 default:
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54 // shouldn't happen
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55 return false;
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56 }
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57 }
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58
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59 bool ParagraphModel::ValidBodyLine(int lmargin, int lindent, int rindent, int rmargin) const {
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60 switch (justification_) {
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61 case JUSTIFICATION_LEFT:
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62 return NearlyEqual(lmargin + lindent, margin_ + body_indent_, tolerance_);
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63 case JUSTIFICATION_RIGHT:
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64 return NearlyEqual(rmargin + rindent, margin_ + body_indent_, tolerance_);
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65 case JUSTIFICATION_CENTER:
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66 return NearlyEqual(lindent, rindent, tolerance_ * 2);
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67 default:
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68 // shouldn't happen
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69 return false;
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70 }
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71 }
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72
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73 bool ParagraphModel::Comparable(const ParagraphModel &other) const {
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74 if (justification_ != other.justification_) {
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75 return false;
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76 }
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77 if (justification_ == JUSTIFICATION_CENTER || justification_ == JUSTIFICATION_UNKNOWN) {
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78 return true;
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79 }
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80 int tolerance = (tolerance_ + other.tolerance_) / 4;
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81 return NearlyEqual(margin_ + first_indent_, other.margin_ + other.first_indent_, tolerance) &&
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82 NearlyEqual(margin_ + body_indent_, other.margin_ + other.body_indent_, tolerance);
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83 }
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84
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85 std::string ParagraphModel::ToString() const {
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86 char buffer[200];
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87 const char *alignment = ParagraphJustificationToString(justification_);
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88 snprintf(buffer, sizeof(buffer), "margin: %d, first_indent: %d, body_indent: %d, alignment: %s",
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89 margin_, first_indent_, body_indent_, alignment);
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90 return std::string(buffer);
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91 }
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92
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93 } // namespace tesseract