Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/tesseract/src/ccmain/paramsd.h @ 40:aa33339d6b8a upstream

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ADD: MuPDF v1.26.10: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.5.
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 11:31:38 +0200
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children
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1 ///////////////////////////////////////////////////////////////////////
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2 // File: paramsd.h
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3 // Description: Tesseract parameter editor
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4 // Author: Joern Wanke
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5 //
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6 // (C) Copyright 2007, 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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18 //
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19 // Tesseract parameter editor is used to edit all the parameters used
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20 // within tesseract from the ui.
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21 #ifndef TESSERACT_CCMAIN_PARAMSD_H_
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22 #define TESSERACT_CCMAIN_PARAMSD_H_
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24 #ifndef GRAPHICS_DISABLED
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26 # include "elst.h" // for ELIST_ITERATOR, ELISTIZEH, ELIST_LINK
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27 # include "scrollview.h" // for ScrollView (ptr only), SVEvent (ptr only)
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29 namespace tesseract {
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31 class SVMenuNode;
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32
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33 class BoolParam;
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34 class DoubleParam;
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35 class IntParam;
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36 class StringParam;
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37 class Tesseract;
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39 // A list of all possible parameter types used.
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40 enum ParamType { VT_INTEGER, VT_BOOLEAN, VT_STRING, VT_DOUBLE };
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41
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42 // A rather hackish helper structure which can take any kind of parameter input
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43 // (defined by ParamType) and do a couple of common operations on them, like
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44 // comparisond or getting its value. It is used in the context of the
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45 // ParamsEditor as a bridge from the internal tesseract parameters to the
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46 // ones displayed by the ScrollView server.
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47 class ParamContent : public ELIST_LINK {
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48 public:
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49 // Compare two VC objects by their name.
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50 static int Compare(const void *v1, const void *v2);
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51
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52 // Gets a VC object identified by its ID.
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53 static ParamContent *GetParamContentById(int id);
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54
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55 // Constructors for the various ParamTypes.
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56 ParamContent() = default;
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57 explicit ParamContent(tesseract::StringParam *it);
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58 explicit ParamContent(tesseract::IntParam *it);
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59 explicit ParamContent(tesseract::BoolParam *it);
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60 explicit ParamContent(tesseract::DoubleParam *it);
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61
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62 // Getters and Setters.
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63 void SetValue(const char *val);
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64 std::string GetValue() const;
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65 const char *GetName() const;
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66 const char *GetDescription() const;
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67
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68 int GetId() const {
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69 return my_id_;
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70 }
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71 bool HasChanged() const {
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72 return changed_;
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73 }
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74
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75 private:
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76 // The unique ID of this VC object.
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77 int my_id_;
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78 // Whether the parameter was changed_ and thus needs to be rewritten.
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79 bool changed_ = false;
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80 // The actual ParamType of this VC object.
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81 ParamType param_type_;
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82
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83 union {
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84 tesseract::StringParam *sIt;
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85 tesseract::IntParam *iIt;
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86 tesseract::BoolParam *bIt;
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87 tesseract::DoubleParam *dIt;
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88 };
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89 };
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90
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91 ELISTIZEH(ParamContent)
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92
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93 // The parameters editor enables the user to edit all the parameters used within
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94 // tesseract. It can be invoked on its own, but is supposed to be invoked by
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95 // the program editor.
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96 class ParamsEditor : public SVEventHandler {
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97 public:
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98 // Integrate the parameters editor as popupmenu into the existing scrollview
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99 // window (usually the pg editor). If sv == null, create a new empty
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100 // empty window and attach the parameter editor to that window (ugly).
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101 explicit ParamsEditor(tesseract::Tesseract *, ScrollView *sv = nullptr);
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102
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103 // Event listener. Waits for SVET_POPUP events and processes them.
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104 void Notify(const SVEvent *sve) override;
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105
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106 private:
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107 // Gets the up to the first 3 prefixes from s (split by _).
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108 // For example, tesseract_foo_bar will be split into tesseract,foo and bar.
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109 void GetPrefixes(const char *s, std::string *level_one, std::string *level_two, std::string *level_three);
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110
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111 // Gets the first n words (split by _) and puts them in t.
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112 // For example, tesseract_foo_bar with N=2 will yield tesseract_foo_.
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113 void GetFirstWords(const char *s, // source string
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114 int n, // number of words
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115 char *t); // target string
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116
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117 // Find all editable parameters used within tesseract and create a
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118 // SVMenuNode tree from it.
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119 SVMenuNode *BuildListOfAllLeaves(tesseract::Tesseract *tess);
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120
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121 // Write all (changed_) parameters to a config file.
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122 void WriteParams(char *filename, bool changes_only);
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123
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124 ScrollView *sv_window_;
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125 };
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126
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127 } // namespace tesseract
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128
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129 #endif // !GRAPHICS_DISABLED
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130 #endif // TESSERACT_CCMAIN_PARAMSD_H_