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annotate src/txt-eng-ft.cc @ 9833:637fa784d102

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Allow more font matches
author godfrey@isl.Stanford.EDU
date Wed, 18 Nov 2009 21:02:49 -0500
parents b0b82ab654f6
children 57a59eae83cc
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1 /*
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2
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3 Copyright (C) 2009 Michael Goffioul
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #if HAVE_FREETYPE
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28
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29 #if HAVE_FONTCONFIG
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30 #include <fontconfig/fontconfig.h>
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31 #endif
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32
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33 #include <iostream>
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34
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35 #include "error.h"
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36 #include "pr-output.h"
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37 #include "txt-eng-ft.h"
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38
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39 class
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40 ft_manager
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41 {
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42 public:
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43 static bool instance_ok (void)
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44 {
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45 bool retval = true;
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46
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47 if (! instance)
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48 instance = new ft_manager ();
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49
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50 if (! instance)
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51 {
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52 ::error ("unable to create ft_manager!");
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53
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54 retval = false;
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55 }
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56
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57 return retval;
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58 }
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59
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60 static FT_Face get_font (const std::string& name, const std::string& weight,
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61 const std::string& angle, double size)
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62 { return (instance_ok ()
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63 ? instance->do_get_font (name, weight, angle, size)
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64 : 0); }
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65
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66 private:
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67 static ft_manager *instance;
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68
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69 private:
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70 ft_manager (void)
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71 {
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72 if (FT_Init_FreeType (&library))
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73 {
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74 ::error ("unable to initialize freetype library");
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75 }
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76
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77 #if HAVE_FONTCONFIG
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78 fc_init_done = false;
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79 if (! FcInit ())
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80 {
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81 ::error ("unable to initialize fontconfig library");
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82 }
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83 else
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84 {
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85 fc_init_done = true;
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86 }
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87 #endif
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88 }
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89
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90 ~ft_manager (void)
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91 {
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92 #if HAVE_FONTCONFIG
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93 FcFini ();
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94 fc_init_done = false;
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95 #endif
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96 }
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97
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98 FT_Face do_get_font (const std::string& name, const std::string& weight,
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99 const std::string& angle, double size)
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100 {
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101 FT_Face retval = 0;
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102
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103 std::string file;
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104
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105 #if HAVE_FONTCONFIG
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106 if (fc_init_done)
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107 {
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108 int fc_weight, fc_angle;
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109
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110 if (weight == "bold")
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111 fc_weight = FC_WEIGHT_BOLD;
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112 else if (weight == "light")
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113 fc_weight = FC_WEIGHT_LIGHT;
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114 else if (weight == "demi")
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115 fc_weight = FC_WEIGHT_DEMIBOLD;
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116 else
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117 fc_weight = FC_WEIGHT_NORMAL;
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118
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119 if (angle == "italic")
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120 fc_angle = FC_SLANT_ITALIC;
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121 else if (angle == "oblique")
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122 fc_angle = FC_SLANT_OBLIQUE;
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123 else
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124 fc_angle = FC_SLANT_ROMAN;
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125
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126 FcPattern *pat = FcPatternCreate ();
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127
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128 FcPatternAddString (pat, FC_FAMILY,
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129 (reinterpret_cast<const FcChar8*>
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130 (name == "*" ? "sans" : name.c_str ())));
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131
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132 FcPatternAddInteger (pat, FC_WEIGHT, fc_weight);
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133 FcPatternAddInteger (pat, FC_SLANT, fc_angle);
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134 FcPatternAddDouble (pat, FC_PIXEL_SIZE, size);
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135
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136 if (FcConfigSubstitute (0, pat, FcMatchPattern))
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137 {
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138 FcResult res;
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139 FcPattern *match;
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140
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141 FcDefaultSubstitute (pat);
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142 match = FcFontMatch (0, pat, &res);
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143
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144 // FIXME -- originally, this test also required that
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145 // res != FcResultNoMatch. Is that really needed?
637fa784d102 Allow more font matches
godfrey@isl.Stanford.EDU
parents: 9619
diff changeset
146 if (match)
9403
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diff changeset
147 {
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diff changeset
148 unsigned char *tmp;
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diff changeset
149
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parents:
diff changeset
150 FcPatternGetString (match, FC_FILE, 0, &tmp);
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diff changeset
151 file = reinterpret_cast<char*> (tmp);
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diff changeset
152 }
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parents:
diff changeset
153 else
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154 ::warning ("could not match any font: %s-%s-%s-%g",
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parents:
diff changeset
155 name.c_str (), weight.c_str (), angle.c_str (),
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parents:
diff changeset
156 size);
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parents:
diff changeset
157
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parents:
diff changeset
158 if (match)
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parents:
diff changeset
159 FcPatternDestroy (match);
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parents:
diff changeset
160 }
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parents:
diff changeset
161
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parents:
diff changeset
162 FcPatternDestroy (pat);
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parents:
diff changeset
163 }
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parents:
diff changeset
164 #endif
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165
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parents:
diff changeset
166 if (file.empty ())
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diff changeset
167 {
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diff changeset
168 #ifdef __WIN32__
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169 file = "C:/WINDOWS/Fonts/verdana.ttf";
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170 #else
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171 // FIXME: find a "standard" font for UNIX platforms
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diff changeset
172 #endif
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173 }
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parents:
diff changeset
174
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175 if (! file.empty () && FT_New_Face (library, file.c_str (), 0, &retval))
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176 ::warning ("ft_manager: unable to load font: %s", file.c_str ());
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177
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178 return retval;
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179 }
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180
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181 private:
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182 FT_Library library;
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183 #if HAVE_FONTCONFIG
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184 bool fc_init_done;
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185 #endif
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186 };
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187
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188 ft_manager* ft_manager::instance = 0;
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189
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diff changeset
190 // ---------------------------------------------------------------------------
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191
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diff changeset
192 ft_render::ft_render (void)
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diff changeset
193 : text_processor (), face (0), bbox (1, 4, 0.0),
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parents:
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194 xoffset (0), yoffset (0), mode (MODE_BBOX),
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195 red (0), green (0), blue (0)
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parents:
diff changeset
196 {
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parents:
diff changeset
197 }
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parents:
diff changeset
198
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diff changeset
199 ft_render::~ft_render (void)
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parents:
diff changeset
200 {
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parents:
diff changeset
201 if (face)
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parents:
diff changeset
202 FT_Done_Face (face);
4af6e29449c1 [mq]: graphics_text_engine
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parents:
diff changeset
203 }
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Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
204
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Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
205 void
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Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
206 ft_render::set_font (const base_properties& props)
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parents:
diff changeset
207 {
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Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
208 if (face)
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Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
209 FT_Done_Face (face);
4af6e29449c1 [mq]: graphics_text_engine
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parents:
diff changeset
210
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parents:
diff changeset
211 // FIXME: take "fontunits" into account
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diff changeset
212 double font_size = props.get ("fontsize").double_value ();
9403
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parents:
diff changeset
213
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diff changeset
214 face = ft_manager::get_font (props.get ("fontname").string_value (),
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diff changeset
215 props.get ("fontweight").string_value (),
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parents: 9406
diff changeset
216 props.get ("fontangle").string_value (),
9403
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parents:
diff changeset
217 font_size);
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parents:
diff changeset
218
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Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
219 if (face)
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Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
220 {
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parents:
diff changeset
221 if (FT_Set_Char_Size (face, 0, font_size*64, 0, 0))
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parents: 9406
diff changeset
222 ::warning ("ft_render: unable to set font size to %d", font_size);
9403
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diff changeset
223 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
224 else
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diff changeset
225 ::warning ("ft_render: unable to load appropriate font");
9403
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parents:
diff changeset
226 }
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Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
227
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Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
228 void
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Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
229 ft_render::set_mode (int m)
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Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
230 {
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parents:
diff changeset
231 mode = m;
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parents:
diff changeset
232
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Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
233 switch (mode)
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Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
234 {
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
235 case MODE_BBOX:
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
236 xoffset = yoffset = 0;
4af6e29449c1 [mq]: graphics_text_engine
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parents:
diff changeset
237 bbox = Matrix (1, 4, 0.0);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
238 break;
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Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
239 case MODE_RENDER:
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
240 if (bbox.numel () != 4)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
241 {
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242 ::warning ("ft_render: invalid bounding box, cannot render");
9403
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parents:
diff changeset
243
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
244 xoffset = yoffset = 0;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
245 pixels = uint8NDArray ();
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
246 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
247 else
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Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
248 {
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parents:
diff changeset
249 pixels = uint8NDArray (dim_vector (4, bbox(2), bbox(3)),
4af6e29449c1 [mq]: graphics_text_engine
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parents:
diff changeset
250 static_cast<uint8_t> (0));
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
251 xoffset = 0;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
252 yoffset = -bbox(1)-1;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
253 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
254 break;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
255 default:
4af6e29449c1 [mq]: graphics_text_engine
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parents:
diff changeset
256 ::error ("ft_render: invalid mode `%d'", mode);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
257 break;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
258 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
259 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
260
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
261 void
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
262 ft_render::visit (text_element_string& e)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
263 {
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diff changeset
264 if (face)
9403
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parents:
diff changeset
265 {
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diff changeset
266 std::string str = e.string_value ();
2093499ec9f4 avoid crash if default font can't be found
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parents: 9406
diff changeset
267 FT_UInt glyph_index, previous = 0;
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
268
9616
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parents: 9406
diff changeset
269 for (int i = 0; i < str.length (); i++)
9403
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parents:
diff changeset
270 {
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parents: 9406
diff changeset
271 glyph_index = FT_Get_Char_Index (face, str[i]);
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parents: 9406
diff changeset
272
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parents: 9406
diff changeset
273 if (! glyph_index
2093499ec9f4 avoid crash if default font can't be found
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diff changeset
274 || FT_Load_Glyph (face, glyph_index, FT_LOAD_DEFAULT))
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diff changeset
275 ::warning ("ft_render: skipping missing glyph for character `%c'",
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parents: 9406
diff changeset
276 str[i]);
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diff changeset
277 else
9403
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parents:
diff changeset
278 {
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diff changeset
279 switch (mode)
9403
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Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
280 {
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diff changeset
281 case MODE_RENDER:
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parents: 9406
diff changeset
282 if (FT_Render_Glyph (face->glyph, FT_RENDER_MODE_NORMAL))
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parents: 9406
diff changeset
283 ::warning ("ft_render: unable to render glyph for character `%c'",
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parents: 9406
diff changeset
284 str[i]);
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diff changeset
285 else
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parents: 9406
diff changeset
286 {
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parents: 9406
diff changeset
287 FT_Bitmap& bitmap = face->glyph->bitmap;
2093499ec9f4 avoid crash if default font can't be found
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parents: 9406
diff changeset
288 int x0, y0;
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parents: 9406
diff changeset
289
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John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
290 if (previous)
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
291 {
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
292 FT_Vector delta;
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
293
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
294 FT_Get_Kerning (face, previous, glyph_index, FT_KERNING_DEFAULT, &delta);
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
295 xoffset += (delta.x >> 6);
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
296 }
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
297
9616
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
298 x0 = xoffset+face->glyph->bitmap_left;
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
299 y0 = yoffset+face->glyph->bitmap_top;
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
300 for (int r = 0; r < bitmap.rows; r++)
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
301 for (int c = 0; c < bitmap.width; c++)
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
302 {
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
303 unsigned char pix = bitmap.buffer[r*bitmap.width+c];
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
304 if (x0+c < 0 || x0+c >= pixels.dim2()
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
305 || y0-r < 0 || y0-r >= pixels.dim3())
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
306 {
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
307 //::error ("out-of-bound indexing!!");
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
308 }
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
309 else if (pixels(3, x0+c, y0-r).value () == 0)
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
310 {
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
311 pixels(0, x0+c, y0-r) = red;
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
312 pixels(1, x0+c, y0-r) = green;
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
313 pixels(2, x0+c, y0-r) = blue;
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
314 pixels(3, x0+c, y0-r) = pix;
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
315 }
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
316 }
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
317
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
318 xoffset += (face->glyph->advance.x >> 6);
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
319 }
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
320 break;
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
321
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
322 case MODE_BBOX:
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
323 // width
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
324 if (previous)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
325 {
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
326 FT_Vector delta;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
327
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
328 FT_Get_Kerning (face, previous, glyph_index, FT_KERNING_DEFAULT, &delta);
9616
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
329 bbox(2) += (delta.x >> 6);
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
330 }
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
331 bbox(2) += (face->glyph->advance.x >> 6);
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
332
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
333 int asc, desc;
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
334
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
335 if (false /*tight*/)
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
336 {
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
337 desc = face->glyph->metrics.horiBearingY - face->glyph->metrics.height;
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
338 asc = face->glyph->metrics.horiBearingY;
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
339 }
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
340 else
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
341 {
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
342 asc = face->size->metrics.ascender;
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
343 desc = face->size->metrics.descender;
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
344 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
345
9616
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
346 asc = yoffset + (asc >> 6);
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
347 desc = yoffset + (desc >> 6);
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
348
9616
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
349 if (desc < bbox(1))
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
350 {
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
351 bbox(3) += (bbox(1) - desc);
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
352 bbox(1) = desc;
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
353 }
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
354 if (asc > (bbox(3)+bbox(1)))
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
355 bbox(3) = asc-bbox(1);
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
356 break;
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
357 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
358
9616
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
359 previous = glyph_index;
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
360 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
361 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
362 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
363 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
364
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
365 void
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
366 ft_render::reset (void)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
367 {
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
368 set_mode (MODE_BBOX);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
369 set_color (Matrix (1, 3, 0.0));
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
370 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
371
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
372 void
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
373 ft_render::set_color (Matrix c)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
374 {
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
375 if (c.numel () == 3)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
376 {
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
377 red = static_cast<uint8_t> (c(0)*255);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
378 green = static_cast<uint8_t> (c(1)*255);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
379 blue = static_cast<uint8_t> (c(2)*255);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
380 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
381 else
9616
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
382 ::warning ("ft_render::set_color: invalid color");
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
383 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
384
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
385 uint8NDArray
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
386 ft_render::render (text_element* elt, Matrix& box, int rotation)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
387 {
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
388 set_mode (MODE_BBOX);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
389 elt->accept (*this);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
390 box = bbox;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
391
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
392 set_mode (MODE_RENDER);
9406
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
393 if (pixels.numel () > 0)
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
394 {
9406
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
395 elt->accept (*this);
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
396
9406
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
397 switch (rotation)
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
398 {
9406
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
399 case ROTATION_0:
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
400 break;
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
401 case ROTATION_90:
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
402 {
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
403 Array<octave_idx_type> perm (3);
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
404 perm(0) = 0;
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
405 perm(1) = 2;
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
406 perm(2) = 1;
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
407 pixels = pixels.permute (perm);
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
408
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
409 Array<idx_vector> idx (3);
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
410 idx(0) = idx_vector (':');
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
411 idx(1) = idx_vector (pixels.dim2()-1, -1, -1);
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
412 idx(2) = idx_vector (':');
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
413 pixels = uint8NDArray (pixels.index (idx));
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
414 }
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
415 break;
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
416 case ROTATION_180:
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
417 {
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
418 Array<idx_vector> idx (3);
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
419 idx(0) = idx_vector (':');
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
420 idx(1) = idx_vector (pixels.dim2()-1, -1, -1);
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
421 idx(2)= idx_vector (pixels.dim3()-1, -1, -1);
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
422 pixels = uint8NDArray (pixels.index (idx));
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
423 }
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
424 break;
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
425 case ROTATION_270:
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
426 {
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
427 Array<octave_idx_type> perm (3);
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
428 perm(0) = 0;
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
429 perm(1) = 2;
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
430 perm(2) = 1;
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
431 pixels = pixels.permute (perm);
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
432
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
433 Array<idx_vector> idx (3);
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
434 idx(0) = idx_vector (':');
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
435 idx(1) = idx_vector (':');
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
436 idx(2) = idx_vector (pixels.dim3()-1, -1, -1);
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
437 pixels = uint8NDArray (pixels.index (idx));
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
438 }
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
439 break;
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
440 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
441 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
442
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
443 return pixels;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
444 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
445
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
446 #endif // HAVE_FREETYPE