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annotate libinterp/corefcn/text-renderer.h @ 30564:796f54d4ddbf stable

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update Octave Project Developers copyright for the new year In files that have the "Octave Project Developers" copyright notice, update for 2021. In all .txi and .texi files except gpl.txi and gpl.texi in the doc/liboctave and doc/interpreter directories, change the copyright to "Octave Project Developers", the same as used for other source files. Update copyright notices for 2022 (not done since 2019). For gpl.txi and gpl.texi, change the copyright notice to be "Free Software Foundation, Inc." and leave the date at 2007 only because this file only contains the text of the GPL, not anything created by the Octave Project Developers. Add Paul Thomas to contributors.in.
author John W. Eaton <jwe@octave.org>
date Tue, 28 Dec 2021 18:22:40 -0500
parents a61e1a0f6024
children e88a07dec498
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2009-2022 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if ! defined (octave_text_renderer_h)
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27 #define octave_text_renderer_h 1
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28
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29 #include "octave-config.h"
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30
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31 #include <list>
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32 #include <string>
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33 #include <vector>
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34
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35 #include "caseless-str.h"
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36 #include "dMatrix.h"
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37 #include "uint8NDArray.h"
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38
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39 namespace octave
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40 {
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41 class base_text_renderer;
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42 class text_element;
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43
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44 class
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45 OCTINTERP_API
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46 text_renderer
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47 {
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48 public:
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49
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50 text_renderer (void);
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51
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52 // No copying!
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53
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54 text_renderer (const text_renderer&) = delete;
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55
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56 text_renderer& operator = (const text_renderer&) = delete;
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57
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58 ~text_renderer (void);
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59
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60 bool ok (void) const;
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61
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62 Matrix get_extent (text_element *elt, double rotation = 0.0);
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63
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64 Matrix get_extent (const std::string& txt, double rotation = 0.0,
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65 const caseless_str& interpreter = "tex");
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66
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67 void set_anti_aliasing (bool val);
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68
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69 void set_font (const std::string& name, const std::string& weight,
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70 const std::string& angle, double size);
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71
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72 octave_map get_system_fonts (void);
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73
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74 void set_color (const Matrix& c);
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75
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76 void text_to_pixels (const std::string& txt,
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77 uint8NDArray& pxls, Matrix& bbox,
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78 int halign, int valign, double rotation = 0.0,
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79 const caseless_str& interpreter = "tex",
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80 bool handle_rotation = true);
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81
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82 class font
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83 {
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84 public:
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85
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86 font (void)
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87 : m_name (), m_weight (), m_angle (), m_size (0)
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88 { }
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89
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90 font (const std::string& nm, const std::string& wt,
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91 const std::string& ang, double sz)
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92 : m_name (nm), m_weight (wt), m_angle (ang), m_size (sz)
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93 { }
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94
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95 font (const font& ft)
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96 : m_name (ft.m_name), m_weight (ft.m_weight), m_angle (ft.m_angle),
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97 m_size (ft.m_size)
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98 { }
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99
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100 ~font (void) = default;
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101
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102 font& operator = (const font& ft)
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103 {
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104 if (&ft != this)
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105 {
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106 m_name = ft.m_name;
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107 m_weight = ft.m_weight;
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108 m_angle = ft.m_angle;
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109 m_size = ft.m_size;
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110 }
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111
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112 return *this;
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113 }
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114
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115 std::string get_name (void) const { return m_name; }
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116
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117 std::string get_weight (void) const { return m_weight; }
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118
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119 std::string get_angle (void) const { return m_angle; }
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120
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121 double get_size (void) const { return m_size; }
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122
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123 protected:
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124
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125 std::string m_name;
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126 std::string m_weight;
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127 std::string m_angle;
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128 double m_size;
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129 };
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130
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131 // Container for substrings after parsing.
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132
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133 class string
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134 {
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135 public:
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136
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137 string (const std::string& s, font& f, const double x, const double y)
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138 : m_str (s), m_family (f.get_name ()), m_fnt (f), m_x (x), m_y (y),
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139 m_z (0.0), m_xdata (), m_code (0), m_color (Matrix (1, 3, 0.0)),
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140 m_svg_element ()
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141 { }
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142
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143 string (const string& s)
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144 : m_str (s.m_str), m_family (s.m_family), m_fnt (s.m_fnt), m_x (s.m_x),
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145 m_y (s.m_y), m_z (s.m_z), m_xdata (s.m_xdata), m_code (s.m_code),
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146 m_color (s.m_color), m_svg_element (s.m_svg_element)
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147 { }
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148
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149 ~string (void) = default;
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150
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151 string& operator = (const string& s)
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152 {
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153 if (&s != this)
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154 {
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155 m_str = s.m_str;
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156 m_family = s.m_family;
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157 m_fnt = s.m_fnt;
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158 m_x = s.m_x;
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159 m_y = s.m_y;
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160 m_z = s.m_z;
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161 m_xdata = s.m_xdata;
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162 m_code = s.m_code;
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163 m_color = s.m_color;
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164 }
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165
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166 return *this;
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167 }
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168
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169 void set_string (const std::string& s) { m_str = s; }
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170
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171 std::string get_string (void) const { return m_str; }
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172
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173 std::string get_name (void) const { return m_fnt.get_name (); }
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174
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175 std::string get_family (void) const { return m_family; }
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176
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177 void set_family (const std::string& nm) { m_family = nm; }
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178
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179 std::string get_weight (void) const { return m_fnt.get_weight (); }
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180
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181 std::string get_angle (void) const { return m_fnt.get_angle (); }
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182
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183 double get_size (void) const { return m_fnt.get_size (); }
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184
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185 void set_x (const double x) { m_x = x; }
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186
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187 double get_x (void) const { return m_x; }
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188
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189 void set_xdata (const std::vector<double>& x) { m_xdata = x; }
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190
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191 std::vector<double> get_xdata (void) const { return m_xdata; }
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192
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193 void set_y (const double y) { m_y = y; }
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194
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195 double get_y (void) const { return m_y; }
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196
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197 void set_z (const double z) { m_z = z; }
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198
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199 double get_z (void) const { return m_z; }
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200
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201 void set_code (const uint32_t code) { m_code = code; }
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202
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203 uint32_t get_code (void) const { return m_code; }
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204
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205 void set_svg_element (const std::string& svg) { m_svg_element = svg; }
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206
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207 std::string get_svg_element (void) const { return m_svg_element; }
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208
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209 void set_color (const uint8NDArray& c)
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210 {
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211 m_color(0) = static_cast<double> (c(0)) / 255;
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212 m_color(1) = static_cast<double> (c(1)) / 255;
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213 m_color(2) = static_cast<double> (c(2)) / 255;
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214 }
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215
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216 Matrix get_color (void) const { return m_color; }
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217
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218 private:
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219
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220 std::string m_str;
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221 std::string m_family;
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222 font m_fnt;
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223 double m_x, m_y, m_z;
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224 std::vector<double> m_xdata;
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225 uint32_t m_code;
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226 Matrix m_color;
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227 std::string m_svg_element;
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228 };
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229
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230 void text_to_strlist (const std::string& txt,
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231 std::list<string>& lst, Matrix& box,
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232 int halign, int valign, double rotation = 0.0,
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233 const caseless_str& interpreter = "tex");
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234
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235 private:
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236
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237 base_text_renderer *m_rep;
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238 base_text_renderer *m_latex_rep;
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239 };
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240 }
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241
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242 #endif