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annotate libinterp/corefcn/txt-eng-ft.cc @ 17271:cb7233cfbf43

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Prepare base text rendering code for full TeX support. * libinterp/corefcm/oct-tex-lexer.ll: Include newlines in string characters. * libinterp/corefcn/txt-eng-ft.h (list): New include. (class ft_render::ft_font): New class. (ft_render::current_face, ft_render::push_new_line, ft_render::compute_bbox, ft_render::compute_line_xoffset): New methods. (ft_render::fonts): New member, replaces obsolete face. (ft_render::line_bbox): New member. (ft_render::halign): New member, replaces obsolete multiline_halign. (ft_render::multiline_align_xoffsets): Remove member. (class ft_render): Add comments for each class member. * libinterp/corefcn/txt-eng-ft.cc (ft_render::text_to_pixels): Use halig instead of multiline_halign. (ft_render::ft_render): Adapt to added/removed members. (ft_render::~ft_render): Likewise. (ft_render::set_font): Use fonts member instead of face. (ft_render::push_new_line, ft_render::compute_bbox, ft_render::compute_line_xoffset): New methods. (ft_render::render, ft_render::get_extent): Call compute_bbox. (ft_render::visit(text_element_string)): Remove code for handling newlines, call push_new_line instead. Remove code related to multiline_align_xoffsets.
author Michael Goffioul <michael.goffioul@gmail.com>
date Sun, 18 Aug 2013 16:36:44 -0400
parents ba865ea9c7e9
children 8ce6cdd272eb
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1 /*
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2
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3 Copyright (C) 2009-2012 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 defined (HAVE_FREETYPE)
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28
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29 #if defined (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 #include <map>
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35 #include <utility>
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36
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37 #include "singleton-cleanup.h"
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38
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39 #include "error.h"
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40 #include "pr-output.h"
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41 #include "txt-eng-ft.h"
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42
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43 // FIXME -- maybe issue at most one warning per glyph/font/size/weight
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44 // combination.
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45
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46 static void
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47 gripe_missing_glyph (char c)
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48 {
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49 warning_with_id ("Octave:missing-glyph",
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50 "ft_render: skipping missing glyph for character '%c'",
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51 c);
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52 }
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53
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54 static void
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55 gripe_glyph_render (char c)
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56 {
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57 warning_with_id ("Octave:glyph-render",
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58 "ft_render: unable to render glyph for character '%c'",
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59 c);
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60 }
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61
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62 #ifdef _MSC_VER
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63 // This is just a trick to avoid multiply symbols definition.
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64 // PermMatrix.h contains a dllexport'ed Array<octave_idx_type>
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65 // that will make MSVC not to generate new instantiation and
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66 // use the imported one.
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67 #include "PermMatrix.h"
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68 #endif
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69
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70 // Forward declaration
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71 static void ft_face_destroyed (void* object);
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72
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73 class
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74 ft_manager
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75 {
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76 public:
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77 static bool instance_ok (void)
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78 {
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79 bool retval = true;
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80
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81 if (! instance)
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82 {
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83 instance = new ft_manager ();
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84
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85 if (instance)
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86 singleton_cleanup_list::add (cleanup_instance);
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87 }
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88
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89 if (! instance)
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90 {
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91 ::error ("unable to create ft_manager!");
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92
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93 retval = false;
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94 }
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95
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96 return retval;
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97 }
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98
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99 static void cleanup_instance (void) { delete instance; instance = 0; }
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100
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101 static FT_Face get_font (const std::string& name, const std::string& weight,
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102 const std::string& angle, double size)
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103 { return (instance_ok ()
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104 ? instance->do_get_font (name, weight, angle, size)
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105 : 0); }
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106
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107 static void font_destroyed (FT_Face face)
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108 {
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109 if (instance_ok ())
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110 instance->do_font_destroyed (face);
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111 }
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112
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113 private:
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114
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115 static ft_manager *instance;
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116
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117 typedef std::pair<std::string, double> ft_key;
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118 typedef std::map<ft_key, FT_Face> ft_cache;
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119
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120 // Cache the fonts loaded by freetype. This cache only contains
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121 // weak references to the fonts, strong references are only present
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122 // in class ft_render.
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123 ft_cache cache;
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124
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125 private:
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126
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127 // No copying!
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128
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129 ft_manager (const ft_manager&);
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130
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131 ft_manager& operator = (const ft_manager&);
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132
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133 ft_manager (void)
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134 : library (), freetype_initialized (false), fontconfig_initialized (false)
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135 {
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136 if (FT_Init_FreeType (&library))
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137 ::error ("unable to initialize freetype library");
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138 else
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139 freetype_initialized = true;
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140
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141 #if defined (HAVE_FONTCONFIG)
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142 if (! FcInit ())
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143 ::error ("unable to initialize fontconfig library");
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144 else
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145 fontconfig_initialized = true;
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146 #endif
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147 }
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148
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149 ~ft_manager (void)
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150 {
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151 if (freetype_initialized)
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152 FT_Done_FreeType (library);
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153
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154 #if defined (HAVE_FONTCONFIG)
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155 // FIXME -- Skip the call to FcFini because it can trigger the
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156 // assertion
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157 //
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158 // octave: fccache.c:507: FcCacheFini: Assertion 'fcCacheChains[i] == ((void *)0)' failed.
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159 //
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160 // if (fontconfig_initialized)
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161 // FcFini ();
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162 #endif
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163 }
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164
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165
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166 FT_Face do_get_font (const std::string& name, const std::string& weight,
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167 const std::string& angle, double size)
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168 {
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169 FT_Face retval = 0;
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170
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171 // Look first into the font cache, then use fontconfig. If the font
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172 // is present in the cache, simply add a reference and return it.
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173
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174 ft_key key (name + ":" + weight + ":" + angle, size);
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175 ft_cache::const_iterator it = cache.find (key);
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176
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177 if (it != cache.end ())
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178 {
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179 FT_Reference_Face (it->second);
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180 return it->second;
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181 }
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182
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183 std::string file;
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184
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185 #if defined (HAVE_FONTCONFIG)
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186 if (fontconfig_initialized)
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187 {
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188 int fc_weight, fc_angle;
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189
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190 if (weight == "bold")
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191 fc_weight = FC_WEIGHT_BOLD;
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192 else if (weight == "light")
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193 fc_weight = FC_WEIGHT_LIGHT;
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194 else if (weight == "demi")
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195 fc_weight = FC_WEIGHT_DEMIBOLD;
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196 else
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197 fc_weight = FC_WEIGHT_NORMAL;
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198
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199 if (angle == "italic")
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200 fc_angle = FC_SLANT_ITALIC;
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201 else if (angle == "oblique")
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202 fc_angle = FC_SLANT_OBLIQUE;
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203 else
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204 fc_angle = FC_SLANT_ROMAN;
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205
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206 FcPattern *pat = FcPatternCreate ();
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207
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208 FcPatternAddString (pat, FC_FAMILY,
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209 (reinterpret_cast<const FcChar8*>
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210 (name == "*" ? "sans" : name.c_str ())));
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211
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212 FcPatternAddInteger (pat, FC_WEIGHT, fc_weight);
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213 FcPatternAddInteger (pat, FC_SLANT, fc_angle);
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214 FcPatternAddDouble (pat, FC_PIXEL_SIZE, size);
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215
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216 if (FcConfigSubstitute (0, pat, FcMatchPattern))
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217 {
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218 FcResult res;
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219 FcPattern *match;
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220
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221 FcDefaultSubstitute (pat);
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222 match = FcFontMatch (0, pat, &res);
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223
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224 // FIXME -- originally, this test also required that
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225 // res != FcResultNoMatch. Is that really needed?
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226 if (match)
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227 {
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228 unsigned char *tmp;
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229
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230 FcPatternGetString (match, FC_FILE, 0, &tmp);
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231 file = reinterpret_cast<char*> (tmp);
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232 }
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233 else
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234 ::warning ("could not match any font: %s-%s-%s-%g",
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235 name.c_str (), weight.c_str (), angle.c_str (),
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236 size);
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237
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238 if (match)
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239 FcPatternDestroy (match);
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240 }
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241
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242 FcPatternDestroy (pat);
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243 }
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244 #endif
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245
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246 if (file.empty ())
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247 {
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248 #ifdef __WIN32__
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249 file = "C:/WINDOWS/Fonts/verdana.ttf";
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250 #else
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251 // FIXME: find a "standard" font for UNIX platforms
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252 #endif
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253 }
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254
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255 if (! file.empty ())
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256 {
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257 if (FT_New_Face (library, file.c_str (), 0, &retval))
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258 ::warning ("ft_manager: unable to load font: %s", file.c_str ());
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259 else
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260 {
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261 // Install a finalizer to notify ft_manager that the font is
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262 // being destroyed. The class ft_manager only keeps weak
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263 // references to font objects.
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264
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265 retval->generic.data = new ft_key (key);
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266 retval->generic.finalizer = ft_face_destroyed;
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267
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268 // Insert loaded font into the cache.
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269
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270 cache[key] = retval;
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271 }
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272 }
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273
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274 return retval;
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275 }
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276
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277 void do_font_destroyed (FT_Face face)
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278 {
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279 if (face->generic.data)
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280 {
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281 ft_key* pkey =
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282 reinterpret_cast<ft_key*> (face->generic.data);
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283
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284 cache.erase (*pkey);
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285 delete pkey;
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286 face->generic.data = 0;
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287 }
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288 }
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289
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290 private:
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291 FT_Library library;
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292 bool freetype_initialized;
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293 bool fontconfig_initialized;
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294 };
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295
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296 ft_manager* ft_manager::instance = 0;
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297
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298 static void
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299 ft_face_destroyed (void* object)
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300 { ft_manager::font_destroyed (reinterpret_cast<FT_Face> (object)); }
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301
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302 // ---------------------------------------------------------------------------
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303
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304 ft_render::ft_render (void)
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305 : text_processor (), fonts (), bbox (1, 4, 0.0), halign (0), xoffset (0),
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306 yoffset (0), mode (MODE_BBOX), red (0), green (0), blue (0)
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307 {
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308 }
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309
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310 ft_render::~ft_render (void)
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311 {
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312 fonts.clear ();
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313 }
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314
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315 void
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316 ft_render::set_font (const std::string& name, const std::string& weight,
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317 const std::string& angle, double size)
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318 {
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319 if (fonts.size () > 1)
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320 ::warning ("ft_render: resetting font parameters while the font stack "
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321 "contains more than 1 element.");
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322
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323 // In all cases, we only replace the first/bottom font in the stack, if any.
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324 // Calling this method while there's more than 1 font in the stack does
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325 // not make sense: we're not gonna reconstruct the entire font stack.
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326
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327 if (fonts.size ())
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328 fonts.pop_front ();
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329
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330 // FIXME: take "fontunits" into account
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331 FT_Face face = ft_manager::get_font (name, weight, angle, size);
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332
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333 if (face)
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334 {
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335 if (FT_Set_Char_Size (face, 0, size*64, 0, 0))
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336 ::warning ("ft_render: unable to set font size to %d", size);
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337
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338 fonts.push_front (ft_font (name, weight, angle, size, face));
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339 }
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340 else
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2093499ec9f4 avoid crash if default font can't be found
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341 ::warning ("ft_render: unable to load appropriate font");
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342 }
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343
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344 void
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345 ft_render::push_new_line (void)
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346 {
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347 switch (mode)
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348 {
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349 case MODE_BBOX:
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350 {
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351 // Create a new bbox entry based on the current font.
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352
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353 FT_Face face = current_face ();
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354
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diff changeset
355 if (face)
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diff changeset
356 {
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diff changeset
357 int asc = face->size->metrics.ascender >> 6;
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358 int desc = face->size->metrics.descender >> 6;
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diff changeset
359 int h = face->size->metrics.height >> 6;
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diff changeset
360
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diff changeset
361 Matrix bb (1, 5, 0.0);
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diff changeset
362
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diff changeset
363 bb(1) = desc;
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364 bb(3) = asc - desc;
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365 bb(4) = h;
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diff changeset
366
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367 line_bbox.push_back (bb);
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diff changeset
368 }
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diff changeset
369 }
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diff changeset
370 break;
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diff changeset
371
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diff changeset
372 case MODE_RENDER:
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diff changeset
373 {
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374 // Move to the next line bbox, adjust xoffset based on alignment
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diff changeset
375 // and yoffset based on the old and new line bbox.
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diff changeset
376
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diff changeset
377 Matrix old_bbox = line_bbox.front ();
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378 line_bbox.pop_front ();
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diff changeset
379 Matrix new_bbox = line_bbox.front ();
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diff changeset
380
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381 xoffset = compute_line_xoffset (new_bbox);
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diff changeset
382 yoffset += (old_bbox(1) - (new_bbox(1) + new_bbox(3)));
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diff changeset
383 }
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parents: 17270
diff changeset
384 break;
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diff changeset
385 }
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diff changeset
386 }
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parents: 17270
diff changeset
387
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diff changeset
388 int
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diff changeset
389 ft_render::compute_line_xoffset (const Matrix& lb) const
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diff changeset
390 {
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391 if (! bbox.is_empty ())
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diff changeset
392 {
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diff changeset
393 switch (halign)
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diff changeset
394 {
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diff changeset
395 case 0:
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396 return 0;
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diff changeset
397 case 1:
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398 return (bbox(2) - lb(2)) / 2;
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diff changeset
399 case 2:
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400 return (bbox(2) - lb(2));
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401 }
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402 }
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Michael Goffioul <michael.goffioul@gmail.com>
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diff changeset
403
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Michael Goffioul <michael.goffioul@gmail.com>
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diff changeset
404 return 0;
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
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diff changeset
405 }
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Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
406
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Michael Goffioul <michael.goffioul@gmail.com>
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diff changeset
407 void
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Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
408 ft_render::compute_bbox (void)
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
409 {
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
410 // Stack the various line bbox together and compute the final
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
411 // bounding box for the entire text string.
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
412
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
413 bbox = Matrix ();
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
414
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
415 switch (line_bbox.size ())
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
416 {
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
417 case 0:
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
418 break;
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
419 case 1:
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
420 bbox = line_bbox.front ().extract (0, 0, 0, 3);
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
421 break;
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
422 default:
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
423 for (std::list<Matrix>::const_iterator it = line_bbox.begin ();
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
424 it != line_bbox.end (); ++it)
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
425 {
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
426 if (bbox.is_empty ())
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
427 bbox = it->extract (0, 0, 0, 3);
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
428 else
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
429 {
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
430 bbox(1) -= (*it)(3);
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
431 bbox(3) += (*it)(3);
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
432 bbox(2) = xmax (bbox(2), (*it)(2));
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
433 }
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
434 }
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
435 break;
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
436 }
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
437 }
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
438
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
439 void
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
440 ft_render::set_mode (int m)
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 mode = m;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
443
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
444 switch (mode)
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 case MODE_BBOX:
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
447 xoffset = yoffset = 0;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
448 bbox = Matrix (1, 4, 0.0);
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
449 line_bbox.clear ();
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
450 push_new_line ();
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
451 break;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
452 case MODE_RENDER:
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
453 if (bbox.numel () != 4)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
454 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
455 ::warning ("ft_render: invalid bounding box, cannot render");
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
456
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
457 xoffset = yoffset = 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
458 pixels = uint8NDArray ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
459 }
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
460 else
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
461 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
462 pixels = uint8NDArray (dim_vector (4, bbox(2), bbox(3)),
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
463 static_cast<uint8_t> (0));
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
464 xoffset = compute_line_xoffset (line_bbox.front ());
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
465 yoffset = -bbox(1)-1;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
466 }
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
467 break;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
468 default:
15466
d174210ce1ec use ' instead of ` in error messages, warnings and most comments
John W. Eaton <jwe@octave.org>
parents: 14138
diff changeset
469 ::error ("ft_render: invalid mode '%d'", mode);
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
470 break;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
471 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
472 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
473
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
474 void
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
475 ft_render::visit (text_element_string& e)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
476 {
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
477 FT_Face face = current_face ();
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
478
9616
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
479 if (face)
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
480 {
9616
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
481 std::string str = e.string_value ();
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
482 FT_UInt glyph_index, previous = 0;
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
483
10553
f88e3d5d88e2 avoid GCC warnings
John W. Eaton <jwe@octave.org>
parents: 10402
diff changeset
484 for (size_t i = 0; i < str.length (); i++)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
485 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
486 glyph_index = FT_Get_Char_Index (face, str[i]);
9616
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
487
13141
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12969
diff changeset
488 if (str[i] != '\n'
12965
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
489 && (! glyph_index
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
490 || FT_Load_Glyph (face, glyph_index, FT_LOAD_DEFAULT)))
13317
d2b799e3178a allow warnings about missing glyphs to be disabled
John W. Eaton <jwe@octave.org>
parents: 13141
diff changeset
491 gripe_missing_glyph (str[i]);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
492 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
493 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
494 switch (mode)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
495 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
496 case MODE_RENDER:
12965
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
497 if (str[i] == '\n')
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
498 {
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
499 glyph_index = FT_Get_Char_Index (face, ' ');
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
500 if (!glyph_index || FT_Load_Glyph (face, glyph_index, FT_LOAD_DEFAULT))
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
501 {
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
502 gripe_missing_glyph (' ');
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
503 }
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
504 else
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
505 push_new_line ();
13317
d2b799e3178a allow warnings about missing glyphs to be disabled
John W. Eaton <jwe@octave.org>
parents: 13141
diff changeset
506 }
12965
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
507 else if (FT_Render_Glyph (face->glyph, FT_RENDER_MODE_NORMAL))
13317
d2b799e3178a allow warnings about missing glyphs to be disabled
John W. Eaton <jwe@octave.org>
parents: 13141
diff changeset
508 {
d2b799e3178a allow warnings about missing glyphs to be disabled
John W. Eaton <jwe@octave.org>
parents: 13141
diff changeset
509 gripe_glyph_render (str[i]);
d2b799e3178a allow warnings about missing glyphs to be disabled
John W. Eaton <jwe@octave.org>
parents: 13141
diff changeset
510 }
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
511 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
512 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
513 FT_Bitmap& bitmap = face->glyph->bitmap;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
514 int x0, y0;
9616
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
515
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
516 if (previous)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
517 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
518 FT_Vector delta;
9616
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
519
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
520 FT_Get_Kerning (face, previous, glyph_index, FT_KERNING_DEFAULT, &delta);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
521 xoffset += (delta.x >> 6);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
522 }
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
523
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
524 x0 = xoffset+face->glyph->bitmap_left;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
525 y0 = yoffset+face->glyph->bitmap_top;
12965
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
526
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
527 // 'w' seems to have a negative -1
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
528 // face->glyph->bitmap_left, this is so we don't
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
529 // index out of bound, and assumes we we allocated
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
530 // the right amount of horizontal space in the bbox.
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
531 if (x0 < 0)
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
532 x0 = 0;
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
533
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
534 for (int r = 0; r < bitmap.rows; r++)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
535 for (int c = 0; c < bitmap.width; c++)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
536 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
537 unsigned char pix = bitmap.buffer[r*bitmap.width+c];
14846
460a3c6d8bf1 maint: Use Octave coding convention for cuddled parenthis in function calls with empty argument lists.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
538 if (x0+c < 0 || x0+c >= pixels.dim2 ()
460a3c6d8bf1 maint: Use Octave coding convention for cuddled parenthis in function calls with empty argument lists.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
539 || y0-r < 0 || y0-r >= pixels.dim3 ())
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
540 {
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
541 //::warning ("ft_render: pixel out of bound (char=%d, (x,y)=(%d,%d), (w,h)=(%d,%d)",
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
542 // str[i], x0+c, y0-r, pixels.dim2 (), pixels.dim3 ());
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
543 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
544 else if (pixels(3, x0+c, y0-r).value () == 0)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
545 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
546 pixels(0, x0+c, y0-r) = red;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
547 pixels(1, x0+c, y0-r) = green;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
548 pixels(2, x0+c, y0-r) = blue;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
549 pixels(3, x0+c, y0-r) = pix;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
550 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
551 }
9616
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
552
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
553 xoffset += (face->glyph->advance.x >> 6);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
554 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
555 break;
9616
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
556
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
557 case MODE_BBOX:
12965
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
558 if (str[i] == '\n')
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
559 {
14861
f7afecdd87ef maint: Use Octave coding conventions for cuddling parentheses in src/ directory
Rik <octave@nomad.inbox5.com>
parents: 14846
diff changeset
560 glyph_index = FT_Get_Char_Index (face, ' ');
12965
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
561 if (! glyph_index
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
562 || FT_Load_Glyph (face, glyph_index, FT_LOAD_DEFAULT))
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
563 {
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
564 gripe_missing_glyph (' ');
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
565 }
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
566 else
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
567 push_new_line ();
13141
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12969
diff changeset
568 }
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12969
diff changeset
569 else
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
570 {
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
571 Matrix& bb = line_bbox.back ();
12965
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
572
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
573 // If we have a previous glyph, use kerning information.
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
574 // This usually means moving a bit backward before adding
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
575 // the next glyph. That is, "delta.x" is usually < 0.
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
576 if (previous)
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
577 {
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
578 FT_Vector delta;
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
579
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
580 FT_Get_Kerning (face, previous, glyph_index,
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
581 FT_KERNING_DEFAULT, &delta);
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
582
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
583 bb(2) += (delta.x >> 6);
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
584 }
12965
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
585
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
586 // Extend current line bounding box by the width of the
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
587 // current glyph.
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
588 bb(2) += (face->glyph->advance.x >> 6);
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
589 }
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
590 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
591 }
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
592
12965
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
593 if (str[i] == '\n')
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
594 previous = 0;
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
595 else
22bc9ec80c2c allow multi-line string property for text objects using cell arrays or char matrices
Ben Abbott <bpabbott@mac.com>
parents: 12334
diff changeset
596 previous = glyph_index;
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
597 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
598 }
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
599 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
600 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
601
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
602 void
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
603 ft_render::reset (void)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
604 {
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
605 set_mode (MODE_BBOX);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
606 set_color (Matrix (1, 3, 0.0));
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
607 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
608
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
609 void
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
610 ft_render::set_color (Matrix c)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
611 {
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
612 if (c.numel () == 3)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
613 {
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
614 red = static_cast<uint8_t> (c(0)*255);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
615 green = static_cast<uint8_t> (c(1)*255);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
616 blue = static_cast<uint8_t> (c(2)*255);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
617 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
618 else
9616
2093499ec9f4 avoid crash if default font can't be found
John W. Eaton <jwe@octave.org>
parents: 9406
diff changeset
619 ::warning ("ft_render::set_color: invalid color");
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
620 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
621
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
622 uint8NDArray
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
623 ft_render::render (text_element* elt, Matrix& box, int rotation)
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
624 {
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
625 set_mode (MODE_BBOX);
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
626 elt->accept (*this);
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
627 compute_bbox ();
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
628 box = bbox;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
629
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
630 set_mode (MODE_RENDER);
9406
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
631 if (pixels.numel () > 0)
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
632 {
9406
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
633 elt->accept (*this);
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
634
9406
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
635 switch (rotation)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
636 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
637 case ROTATION_0:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
638 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
639 case ROTATION_90:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
640 {
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
641 Array<octave_idx_type> perm (dim_vector (3, 1));
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
642 perm(0) = 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
643 perm(1) = 2;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
644 perm(2) = 1;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
645 pixels = pixels.permute (perm);
9406
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
646
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
647 Array<idx_vector> idx (dim_vector (3, 1));
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
648 idx(0) = idx_vector (':');
14846
460a3c6d8bf1 maint: Use Octave coding convention for cuddled parenthis in function calls with empty argument lists.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
649 idx(1) = idx_vector (pixels.dim2 ()-1, -1, -1);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
650 idx(2) = idx_vector (':');
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
651 pixels = uint8NDArray (pixels.index (idx));
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
652 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
653 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
654 case ROTATION_180:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
655 {
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
656 Array<idx_vector> idx (dim_vector (3, 1));
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
657 idx(0) = idx_vector (':');
14846
460a3c6d8bf1 maint: Use Octave coding convention for cuddled parenthis in function calls with empty argument lists.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
658 idx(1) = idx_vector (pixels.dim2 ()-1, -1, -1);
460a3c6d8bf1 maint: Use Octave coding convention for cuddled parenthis in function calls with empty argument lists.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
659 idx(2)= idx_vector (pixels.dim3 ()-1, -1, -1);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
660 pixels = uint8NDArray (pixels.index (idx));
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
661 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
662 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
663 case ROTATION_270:
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
664 {
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
665 Array<octave_idx_type> perm (dim_vector (3, 1));
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
666 perm(0) = 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
667 perm(1) = 2;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
668 perm(2) = 1;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
669 pixels = pixels.permute (perm);
9406
c0c23dbbade7 Improve error handling in text rendering.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 9405
diff changeset
670
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
671 Array<idx_vector> idx (dim_vector (3, 1));
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
672 idx(0) = idx_vector (':');
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
673 idx(1) = idx_vector (':');
14846
460a3c6d8bf1 maint: Use Octave coding convention for cuddled parenthis in function calls with empty argument lists.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
674 idx(2) = idx_vector (pixels.dim3 ()-1, -1, -1);
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
675 pixels = uint8NDArray (pixels.index (idx));
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
676 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
677 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 9833
diff changeset
678 }
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
679 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
680
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
681 return pixels;
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
682 }
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
683
16201
2338a92e9782 Fix spacing between ylabel and y-axis (bug #38461)
Rik <rik@octave.org>
parents: 15467
diff changeset
684 // Note:
2338a92e9782 Fix spacing between ylabel and y-axis (bug #38461)
Rik <rik@octave.org>
parents: 15467
diff changeset
685 // x-extent accurately measures width of glyphs.
2338a92e9782 Fix spacing between ylabel and y-axis (bug #38461)
Rik <rik@octave.org>
parents: 15467
diff changeset
686 // y-extent is overly large because it is measured from baseline-to-baseline.
2338a92e9782 Fix spacing between ylabel and y-axis (bug #38461)
Rik <rik@octave.org>
parents: 15467
diff changeset
687 // Calling routines, such as ylabel, may need to account for this mismatch.
2338a92e9782 Fix spacing between ylabel and y-axis (bug #38461)
Rik <rik@octave.org>
parents: 15467
diff changeset
688
10402
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
689 Matrix
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
690 ft_render::get_extent (text_element *elt, double rotation)
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
691 {
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
692 set_mode (MODE_BBOX);
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
693 elt->accept (*this);
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
694 compute_bbox ();
10402
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
695
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
696 Matrix extent (1, 2, 0.0);
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
697
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
698 switch (rotation_to_mode (rotation))
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
699 {
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
700 case ROTATION_0:
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
701 case ROTATION_180:
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
702 extent(0) = bbox(2);
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
703 extent(1) = bbox(3);
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
704 break;
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
705 case ROTATION_90:
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
706 case ROTATION_270:
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
707 extent(0) = bbox(3);
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
708 extent(1) = bbox(2);
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
709 }
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
710
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
711 return extent;
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
712 }
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
713
12334
63dc132a1000 Move axes labels and title positioning to axes::properties
Konstantinos Poulios <logari81@gmail.com>
parents: 12225
diff changeset
714 Matrix
17269
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
diff changeset
715 ft_render::get_extent (const std::string& txt, double rotation,
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
diff changeset
716 const caseless_str& interpreter)
12334
63dc132a1000 Move axes labels and title positioning to axes::properties
Konstantinos Poulios <logari81@gmail.com>
parents: 12225
diff changeset
717 {
17269
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
diff changeset
718 text_element *elt = text_parser::parse (txt, interpreter);
12334
63dc132a1000 Move axes labels and title positioning to axes::properties
Konstantinos Poulios <logari81@gmail.com>
parents: 12225
diff changeset
719 Matrix extent = get_extent (elt, rotation);
63dc132a1000 Move axes labels and title positioning to axes::properties
Konstantinos Poulios <logari81@gmail.com>
parents: 12225
diff changeset
720 delete elt;
13141
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12969
diff changeset
721
12334
63dc132a1000 Move axes labels and title positioning to axes::properties
Konstantinos Poulios <logari81@gmail.com>
parents: 12225
diff changeset
722 return extent;
63dc132a1000 Move axes labels and title positioning to axes::properties
Konstantinos Poulios <logari81@gmail.com>
parents: 12225
diff changeset
723 }
63dc132a1000 Move axes labels and title positioning to axes::properties
Konstantinos Poulios <logari81@gmail.com>
parents: 12225
diff changeset
724
10402
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
725 int
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
726 ft_render::rotation_to_mode (double rotation) const
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
727 {
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
728 if (rotation == 0.0)
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
729 return ROTATION_0;
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
730 else if (rotation == 90.0)
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
731 return ROTATION_90;
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
732 else if (rotation == 180.0)
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
733 return ROTATION_180;
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
734 else if (rotation == 270.0)
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
735 return ROTATION_270;
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
736 else
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
737 return ROTATION_0;
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
738 }
9f2bf537a651 Implement text extent property
Michael Goffioul <michael.goffioul@gmail.com>
parents: 10350
diff changeset
739
11455
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
740 void
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
741 ft_render::text_to_pixels (const std::string& txt,
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
742 uint8NDArray& pixels_, Matrix& box,
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
743 int _halign, int valign, double rotation,
17269
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
diff changeset
744 const caseless_str& interpreter)
11455
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
745 {
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
746 // FIXME: clip "rotation" between 0 and 360
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
747 int rot_mode = rotation_to_mode (rotation);
13141
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12969
diff changeset
748
17271
cb7233cfbf43 Prepare base text rendering code for full TeX support.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 17270
diff changeset
749 halign = _halign;
11455
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
750
17269
5b088598df1d Add simple TeX parser based on flex/bison.
Michael Goffioul <michael.goffioul@gmail.com>
parents: 16892
diff changeset
751 text_element *elt = text_parser::parse (txt, interpreter);
11455
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
752 pixels_ = render (elt, box, rot_mode);
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
753 delete elt;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
754
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
755 if (pixels_.numel () == 0)
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
756 {
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
757 // nothing to render
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
758 return;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
759 }
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
760
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
761 switch (halign)
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
762 {
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
763 default: box(0) = 0; break;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
764 case 1: box(0) = -box(2)/2; break;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
765 case 2: box(0) = -box(2); break;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
766 }
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
767 switch (valign)
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
768 {
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
769 default: box(1) = 0; break;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
770 case 1: box(1) = -box(3)/2; break;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
771 case 2: box(1) = -box(3); break;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
772 case 3: break;
16206
9ba5c5ed3aeb Add new verticalalignment option 'cap' for OpenGL plotting.
Rik <rik@octave.org>
parents: 16201
diff changeset
773 case 4: box(1) = -box(3)-box(1); break;
11455
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
774 }
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
775
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
776 switch (rot_mode)
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
777 {
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
778 case ROTATION_90:
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
779 std::swap (box(0), box(1));
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
780 std::swap (box(2), box(3));
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
781 box(0) = -box(0)-box(2);
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
782 break;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
783 case ROTATION_180:
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
784 box(0) = -box(0)-box(2);
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
785 box(1) = -box(1)-box(3);
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
786 break;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
787 case ROTATION_270:
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
788 std::swap (box(0), box(1));
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
789 std::swap (box(2), box(3));
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
790 box(1) = -box(1)-box(3);
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
791 break;
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
792 }
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
793 }
2be9e22796d2 improvements in text-extent calculation
Konstantinos Poulios <logari81@googlemail.com>
parents: 10553
diff changeset
794
9403
4af6e29449c1 [mq]: graphics_text_engine
Michael Goffioul <michael.goffioul@gmail.com>
parents:
diff changeset
795 #endif // HAVE_FREETYPE