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annotate libinterp/corefcn/text-renderer.h @ 26995:ab5bfee22d18

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maint: Strip trailing whitespace from source files.
author John W. Eaton <jwe@octave.org>
date Wed, 27 Mar 2019 23:32:07 +0000
parents 0adb232f93b9
children 698c8b08fe8c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2
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3 Copyright (C) 2016-2019 John W. Eaton
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4 Copyright (C) 2009-2019 Michael Goffioul
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5
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6 This file is part of Octave.
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7
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8 Octave is free software: you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by
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10 the Free Software Foundation, either version 3 of the License, or
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11 (at your option) any later version.
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12
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13 Octave is distributed in the hope that it will be useful, but
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14 WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU General Public License for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with Octave; see the file COPYING. If not, see
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20 <https://www.gnu.org/licenses/>.
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21
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22 */
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23
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24 #if ! defined (octave_text_renderer_h)
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25 #define octave_text_renderer_h 1
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26
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27 #include "octave-config.h"
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28
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29 #include <list>
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30 #include <string>
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31 #include <vector>
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32
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33 #include "caseless-str.h"
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34 #include "dMatrix.h"
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35 #include "uint8NDArray.h"
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36
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37 namespace octave
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38 {
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39 class base_text_renderer;
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40 class text_element;
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41
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42 class
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43 OCTINTERP_API
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44 text_renderer
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45 {
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46 public:
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47
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48 text_renderer (void);
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49
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50 // No copying!
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51
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52 text_renderer (const text_renderer&) = delete;
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53
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54 text_renderer& operator = (const text_renderer&) = delete;
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55
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56 ~text_renderer (void);
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57
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58 bool ok (void) const;
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59
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60 Matrix get_extent (text_element *elt, double rotation = 0.0);
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61
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62 Matrix get_extent (const std::string& txt, double rotation = 0.0,
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63 const caseless_str& interpreter = "tex");
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64
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65 void set_anti_aliasing (bool val);
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66
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67 void set_font (const std::string& name, const std::string& weight,
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68 const std::string& angle, double size);
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69
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70 void set_color (const Matrix& c);
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71
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72 void text_to_pixels (const std::string& txt,
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73 uint8NDArray& pxls, Matrix& bbox,
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74 int halign, int valign, double rotation = 0.0,
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75 const caseless_str& interpreter = "tex",
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76 bool handle_rotation = true);
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77
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78 class font
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79 {
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80 public:
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81
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82 font (void)
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83 : name (), weight (), angle (), size (0)
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84 { }
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85
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86 font (const std::string& nm, const std::string& wt,
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87 const std::string& ang, double sz)
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88 : name (nm), weight (wt), angle (ang), size (sz)
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89 { }
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90
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91 font (const font& ft)
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92 : name (ft.name), weight (ft.weight), angle (ft.angle),
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93 size (ft.size)
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94 { }
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95
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96 ~font (void) = default;
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97
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98 font& operator = (const font& ft)
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99 {
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100 if (&ft != this)
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101 {
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102 name = ft.name;
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103 weight = ft.weight;
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104 angle = ft.angle;
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105 size = ft.size;
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106 }
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107
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108 return *this;
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109 }
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110
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111 std::string get_name (void) const { return name; }
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112
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113 std::string get_weight (void) const { return weight; }
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114
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115 std::string get_angle (void) const { return angle; }
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116
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117 double get_size (void) const { return size; }
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118
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119 protected:
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120
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121 std::string name;
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122 std::string weight;
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123 std::string angle;
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124 double size;
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125 };
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126
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127 // Container for substrings after parsing.
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128
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129 class string
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130 {
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131 public:
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132
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133 string (const std::string& s, font& f, const double x0, const double y0)
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134 : str (s), family (f.get_name ()), fnt (f), x (x0), y (y0), z (0.0),
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135 xdata (), code (0), color (Matrix (1,3,0.0))
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136 { }
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137
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138 string (const string& s)
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139 : str (s.str), family (s.family), fnt (s.fnt), x (s.x), y (s.y),
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140 z (s.z), xdata (s.xdata), code (s.code), color (s.color)
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141 { }
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142
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143 ~string (void) = default;
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144
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145 string& operator = (const string& s)
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146 {
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147 if (&s != this)
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148 {
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149 str = s.str;
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150 family = s.family;
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151 fnt = s.fnt;
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152 x = s.x;
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153 y = s.y;
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154 z = s.z;
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155 xdata = s.xdata;
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156 code = s.code;
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157 color = s.color;
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158 }
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159
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160 return *this;
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161 }
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162
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163 void set_string (const std::string& s) { str = s; }
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164
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165 std::string get_string (void) const { return str; }
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166
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167 std::string get_name (void) const { return fnt.get_name (); }
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168
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169 std::string get_family (void) const { return family; }
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170
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171 void set_family (const std::string& nm) { family = nm; }
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172
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173 std::string get_weight (void) const { return fnt.get_weight (); }
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174
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175 std::string get_angle (void) const { return fnt.get_angle (); }
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176
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177 double get_size (void) const { return fnt.get_size (); }
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178
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179 void set_x (const double x0) { x = x0; }
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180
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181 double get_x (void) const { return x; }
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182
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183 void set_xdata (const std::vector<double>& x0) { xdata = x0; }
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184
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185 std::vector<double> get_xdata (void) const { return xdata; }
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186
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187 void set_y (const double y0) { y = y0; }
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188
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189 double get_y (void) const { return y; }
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190
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191 void set_z (const double z0) { z = z0; }
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192
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193 double get_z (void) const { return z; }
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194
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195 void set_code (const uint32_t c) { code = c; }
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196
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197 uint32_t get_code (void) const { return code; }
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198
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199 void set_color (const uint8NDArray& c)
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200 {
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201 color(0) = static_cast<double> (c(0)) / 255;
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202 color(1) = static_cast<double> (c(1)) / 255;
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203 color(2) = static_cast<double> (c(2)) / 255;
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204 }
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205
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206 Matrix get_color (void) const { return color; }
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207
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208 private:
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209
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210 std::string str;
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211 std::string family;
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212 font fnt;
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213 double x, y, z;
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214 std::vector<double> xdata;
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215 uint32_t code;
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216 Matrix color;
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217 };
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218
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219 void text_to_strlist (const std::string& txt,
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220 std::list<string>& lst, Matrix& box,
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221 int halign, int valign, double rotation = 0.0,
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222 const caseless_str& interpreter = "tex");
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223
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224 private:
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225
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226 base_text_renderer *rep;
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227 };
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228 }
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229
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230 #endif