1 /***************************************************************************/ |
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2 /* */ |
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3 /* ftoption.h (for development) */ |
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4 /* */ |
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5 /* User-selectable configuration macros (specification only). */ |
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6 /* */ |
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7 /* Copyright 1996-2011 by */ |
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8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
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9 /* */ |
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10 /* This file is part of the FreeType project, and may only be used, */ |
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11 /* modified, and distributed under the terms of the FreeType project */ |
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12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
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13 /* this file you indicate that you have read the license and */ |
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14 /* understand and accept it fully. */ |
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15 /* */ |
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16 /***************************************************************************/ |
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17 |
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18 |
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19 #ifndef __FTOPTION_H__ |
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20 #define __FTOPTION_H__ |
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21 |
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22 |
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23 #include <ft2build.h> |
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24 |
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25 |
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26 FT_BEGIN_HEADER |
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27 |
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28 /*************************************************************************/ |
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29 /* */ |
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30 /* USER-SELECTABLE CONFIGURATION MACROS */ |
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31 /* */ |
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32 /* This file contains the default configuration macro definitions for */ |
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33 /* a standard build of the FreeType library. There are three ways to */ |
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34 /* use this file to build project-specific versions of the library: */ |
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35 /* */ |
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36 /* - You can modify this file by hand, but this is not recommended in */ |
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37 /* cases where you would like to build several versions of the */ |
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38 /* library from a single source directory. */ |
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39 /* */ |
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40 /* - You can put a copy of this file in your build directory, more */ |
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41 /* precisely in `$BUILD/freetype/config/ftoption.h', where `$BUILD' */ |
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42 /* is the name of a directory that is included _before_ the FreeType */ |
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43 /* include path during compilation. */ |
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44 /* */ |
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45 /* The default FreeType Makefiles and Jamfiles use the build */ |
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46 /* directory `builds/<system>' by default, but you can easily change */ |
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47 /* that for your own projects. */ |
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48 /* */ |
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49 /* - Copy the file <ft2build.h> to `$BUILD/ft2build.h' and modify it */ |
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50 /* slightly to pre-define the macro FT_CONFIG_OPTIONS_H used to */ |
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51 /* locate this file during the build. For example, */ |
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52 /* */ |
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53 /* #define FT_CONFIG_OPTIONS_H <myftoptions.h> */ |
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54 /* #include <freetype/config/ftheader.h> */ |
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55 /* */ |
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56 /* will use `$BUILD/myftoptions.h' instead of this file for macro */ |
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57 /* definitions. */ |
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58 /* */ |
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59 /* Note also that you can similarly pre-define the macro */ |
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60 /* FT_CONFIG_MODULES_H used to locate the file listing of the modules */ |
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61 /* that are statically linked to the library at compile time. By */ |
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62 /* default, this file is <freetype/config/ftmodule.h>. */ |
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63 /* */ |
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64 /* We highly recommend using the third method whenever possible. */ |
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65 /* */ |
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66 /*************************************************************************/ |
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67 |
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68 |
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69 /*************************************************************************/ |
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70 /*************************************************************************/ |
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71 /**** ****/ |
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72 /**** G E N E R A L F R E E T Y P E 2 C O N F I G U R A T I O N ****/ |
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73 /**** ****/ |
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74 /*************************************************************************/ |
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75 /*************************************************************************/ |
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76 |
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77 |
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78 /*************************************************************************/ |
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79 /* */ |
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80 /* Uncomment the line below if you want to activate sub-pixel rendering */ |
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81 /* (a.k.a. LCD rendering, or ClearType) in this build of the library. */ |
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82 /* */ |
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83 /* Note that this feature is covered by several Microsoft patents */ |
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84 /* and should not be activated in any default build of the library. */ |
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85 /* */ |
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86 /* This macro has no impact on the FreeType API, only on its */ |
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87 /* _implementation_. For example, using FT_RENDER_MODE_LCD when calling */ |
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88 /* FT_Render_Glyph still generates a bitmap that is 3 times wider than */ |
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89 /* the original size in case this macro isn't defined; however, each */ |
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90 /* triplet of subpixels has R=G=B. */ |
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91 /* */ |
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92 /* This is done to allow FreeType clients to run unmodified, forcing */ |
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93 /* them to display normal gray-level anti-aliased glyphs. */ |
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94 /* */ |
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95 #define FT_CONFIG_OPTION_SUBPIXEL_RENDERING |
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96 |
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97 |
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98 /*************************************************************************/ |
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99 /* */ |
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100 /* Many compilers provide a non-ANSI 64-bit data type that can be used */ |
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101 /* by FreeType to speed up some computations. However, this will create */ |
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102 /* some problems when compiling the library in strict ANSI mode. */ |
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103 /* */ |
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104 /* For this reason, the use of 64-bit integers is normally disabled when */ |
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105 /* the __STDC__ macro is defined. You can however disable this by */ |
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106 /* defining the macro FT_CONFIG_OPTION_FORCE_INT64 here. */ |
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107 /* */ |
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108 /* For most compilers, this will only create compilation warnings when */ |
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109 /* building the library. */ |
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110 /* */ |
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111 /* ObNote: The compiler-specific 64-bit integers are detected in the */ |
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112 /* file `ftconfig.h' either statically or through the */ |
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113 /* `configure' script on supported platforms. */ |
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114 /* */ |
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115 #undef FT_CONFIG_OPTION_FORCE_INT64 |
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116 |
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117 |
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118 /*************************************************************************/ |
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119 /* */ |
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120 /* If this macro is defined, do not try to use an assembler version of */ |
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121 /* performance-critical functions (e.g. FT_MulFix). You should only do */ |
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122 /* that to verify that the assembler function works properly, or to */ |
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123 /* execute benchmark tests of the various implementations. */ |
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124 /* #define FT_CONFIG_OPTION_NO_ASSEMBLER */ |
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125 |
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126 |
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127 /*************************************************************************/ |
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128 /* */ |
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129 /* If this macro is defined, try to use an inlined assembler version of */ |
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130 /* the `FT_MulFix' function, which is a `hotspot' when loading and */ |
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131 /* hinting glyphs, and which should be executed as fast as possible. */ |
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132 /* */ |
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133 /* Note that if your compiler or CPU is not supported, this will default */ |
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134 /* to the standard and portable implementation found in `ftcalc.c'. */ |
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135 /* */ |
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136 #define FT_CONFIG_OPTION_INLINE_MULFIX |
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137 |
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138 |
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139 /*************************************************************************/ |
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140 /* */ |
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141 /* LZW-compressed file support. */ |
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142 /* */ |
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143 /* FreeType now handles font files that have been compressed with the */ |
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144 /* `compress' program. This is mostly used to parse many of the PCF */ |
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145 /* files that come with various X11 distributions. The implementation */ |
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146 /* uses NetBSD's `zopen' to partially uncompress the file on the fly */ |
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147 /* (see src/lzw/ftgzip.c). */ |
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148 /* */ |
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149 /* Define this macro if you want to enable this `feature'. */ |
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150 /* */ |
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151 #define FT_CONFIG_OPTION_USE_LZW |
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152 |
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153 |
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154 /*************************************************************************/ |
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155 /* */ |
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156 /* Gzip-compressed file support. */ |
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157 /* */ |
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158 /* FreeType now handles font files that have been compressed with the */ |
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159 /* `gzip' program. This is mostly used to parse many of the PCF files */ |
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160 /* that come with XFree86. The implementation uses `zlib' to */ |
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161 /* partially uncompress the file on the fly (see src/gzip/ftgzip.c). */ |
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162 /* */ |
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163 /* Define this macro if you want to enable this `feature'. See also */ |
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164 /* the macro FT_CONFIG_OPTION_SYSTEM_ZLIB below. */ |
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165 /* */ |
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166 #define FT_CONFIG_OPTION_USE_ZLIB |
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167 |
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168 |
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169 /*************************************************************************/ |
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170 /* */ |
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171 /* ZLib library selection */ |
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172 /* */ |
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173 /* This macro is only used when FT_CONFIG_OPTION_USE_ZLIB is defined. */ |
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174 /* It allows FreeType's `ftgzip' component to link to the system's */ |
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175 /* installation of the ZLib library. This is useful on systems like */ |
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176 /* Unix or VMS where it generally is already available. */ |
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177 /* */ |
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178 /* If you let it undefined, the component will use its own copy */ |
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179 /* of the zlib sources instead. These have been modified to be */ |
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180 /* included directly within the component and *not* export external */ |
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181 /* function names. This allows you to link any program with FreeType */ |
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182 /* _and_ ZLib without linking conflicts. */ |
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183 /* */ |
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184 /* Do not #undef this macro here since the build system might define */ |
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185 /* it for certain configurations only. */ |
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186 /* */ |
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187 /* #define FT_CONFIG_OPTION_SYSTEM_ZLIB */ |
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188 |
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189 |
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190 /*************************************************************************/ |
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191 /* */ |
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192 /* Bzip2-compressed file support. */ |
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193 /* */ |
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194 /* FreeType now handles font files that have been compressed with the */ |
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195 /* `bzip2' program. This is mostly used to parse many of the PCF */ |
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196 /* files that come with XFree86. The implementation uses `libbz2' to */ |
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197 /* partially uncompress the file on the fly (see src/bzip2/ftbzip2.c). */ |
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198 /* Contrary to gzip, bzip2 currently is not included and need to use */ |
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199 /* the system available bzip2 implementation. */ |
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200 /* */ |
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201 /* Define this macro if you want to enable this `feature'. */ |
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202 /* */ |
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203 #define FT_CONFIG_OPTION_USE_BZIP2 |
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204 |
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205 |
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206 /*************************************************************************/ |
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207 /* */ |
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208 /* DLL export compilation */ |
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209 /* */ |
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210 /* When compiling FreeType as a DLL, some systems/compilers need a */ |
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211 /* special keyword in front OR after the return type of function */ |
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212 /* declarations. */ |
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213 /* */ |
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214 /* Two macros are used within the FreeType source code to define */ |
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215 /* exported library functions: FT_EXPORT and FT_EXPORT_DEF. */ |
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216 /* */ |
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217 /* FT_EXPORT( return_type ) */ |
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218 /* */ |
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219 /* is used in a function declaration, as in */ |
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220 /* */ |
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221 /* FT_EXPORT( FT_Error ) */ |
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222 /* FT_Init_FreeType( FT_Library* alibrary ); */ |
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223 /* */ |
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224 /* */ |
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225 /* FT_EXPORT_DEF( return_type ) */ |
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226 /* */ |
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227 /* is used in a function definition, as in */ |
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228 /* */ |
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229 /* FT_EXPORT_DEF( FT_Error ) */ |
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230 /* FT_Init_FreeType( FT_Library* alibrary ) */ |
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231 /* { */ |
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232 /* ... some code ... */ |
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233 /* return FT_Err_Ok; */ |
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234 /* } */ |
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235 /* */ |
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236 /* You can provide your own implementation of FT_EXPORT and */ |
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237 /* FT_EXPORT_DEF here if you want. If you leave them undefined, they */ |
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238 /* will be later automatically defined as `extern return_type' to */ |
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239 /* allow normal compilation. */ |
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240 /* */ |
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241 /* Do not #undef these macros here since the build system might define */ |
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242 /* them for certain configurations only. */ |
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243 /* */ |
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244 /* #define FT_EXPORT(x) extern x */ |
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245 /* #define FT_EXPORT_DEF(x) x */ |
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246 |
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247 |
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248 /*************************************************************************/ |
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249 /* */ |
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250 /* Glyph Postscript Names handling */ |
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251 /* */ |
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252 /* By default, FreeType 2 is compiled with the `psnames' module. This */ |
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253 /* module is in charge of converting a glyph name string into a */ |
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254 /* Unicode value, or return a Macintosh standard glyph name for the */ |
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255 /* use with the TrueType `post' table. */ |
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256 /* */ |
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257 /* Undefine this macro if you do not want `psnames' compiled in your */ |
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258 /* build of FreeType. This has the following effects: */ |
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259 /* */ |
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260 /* - The TrueType driver will provide its own set of glyph names, */ |
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261 /* if you build it to support postscript names in the TrueType */ |
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262 /* `post' table. */ |
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263 /* */ |
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264 /* - The Type 1 driver will not be able to synthesize a Unicode */ |
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265 /* charmap out of the glyphs found in the fonts. */ |
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266 /* */ |
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267 /* You would normally undefine this configuration macro when building */ |
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268 /* a version of FreeType that doesn't contain a Type 1 or CFF driver. */ |
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269 /* */ |
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270 #define FT_CONFIG_OPTION_POSTSCRIPT_NAMES |
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271 |
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272 |
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273 /*************************************************************************/ |
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274 /* */ |
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275 /* Postscript Names to Unicode Values support */ |
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276 /* */ |
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277 /* By default, FreeType 2 is built with the `PSNames' module compiled */ |
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278 /* in. Among other things, the module is used to convert a glyph name */ |
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279 /* into a Unicode value. This is especially useful in order to */ |
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280 /* synthesize on the fly a Unicode charmap from the CFF/Type 1 driver */ |
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281 /* through a big table named the `Adobe Glyph List' (AGL). */ |
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282 /* */ |
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283 /* Undefine this macro if you do not want the Adobe Glyph List */ |
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284 /* compiled in your `PSNames' module. The Type 1 driver will not be */ |
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285 /* able to synthesize a Unicode charmap out of the glyphs found in the */ |
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286 /* fonts. */ |
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287 /* */ |
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288 #define FT_CONFIG_OPTION_ADOBE_GLYPH_LIST |
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289 |
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290 |
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291 /*************************************************************************/ |
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292 /* */ |
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293 /* Support for Mac fonts */ |
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294 /* */ |
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295 /* Define this macro if you want support for outline fonts in Mac */ |
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296 /* format (mac dfont, mac resource, macbinary containing a mac */ |
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297 /* resource) on non-Mac platforms. */ |
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298 /* */ |
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299 /* Note that the `FOND' resource isn't checked. */ |
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300 /* */ |
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301 #define FT_CONFIG_OPTION_MAC_FONTS |
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302 |
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303 |
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304 /*************************************************************************/ |
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305 /* */ |
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306 /* Guessing methods to access embedded resource forks */ |
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307 /* */ |
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308 /* Enable extra Mac fonts support on non-Mac platforms (e.g. */ |
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309 /* GNU/Linux). */ |
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310 /* */ |
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311 /* Resource forks which include fonts data are stored sometimes in */ |
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312 /* locations which users or developers don't expected. In some cases, */ |
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313 /* resource forks start with some offset from the head of a file. In */ |
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314 /* other cases, the actual resource fork is stored in file different */ |
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315 /* from what the user specifies. If this option is activated, */ |
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316 /* FreeType tries to guess whether such offsets or different file */ |
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317 /* names must be used. */ |
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318 /* */ |
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319 /* Note that normal, direct access of resource forks is controlled via */ |
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320 /* the FT_CONFIG_OPTION_MAC_FONTS option. */ |
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321 /* */ |
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322 #ifdef FT_CONFIG_OPTION_MAC_FONTS |
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323 #define FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK |
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324 #endif |
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325 |
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326 |
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327 /*************************************************************************/ |
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328 /* */ |
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329 /* Allow the use of FT_Incremental_Interface to load typefaces that */ |
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330 /* contain no glyph data, but supply it via a callback function. */ |
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331 /* This is required by clients supporting document formats which */ |
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332 /* supply font data incrementally as the document is parsed, such */ |
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333 /* as the Ghostscript interpreter for the PostScript language. */ |
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334 /* */ |
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335 #define FT_CONFIG_OPTION_INCREMENTAL |
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336 |
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337 |
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338 /*************************************************************************/ |
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339 /* */ |
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340 /* The size in bytes of the render pool used by the scan-line converter */ |
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341 /* to do all of its work. */ |
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342 /* */ |
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343 /* This must be greater than 4KByte if you use FreeType to rasterize */ |
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344 /* glyphs; otherwise, you may set it to zero to avoid unnecessary */ |
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345 /* allocation of the render pool. */ |
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346 /* */ |
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347 #define FT_RENDER_POOL_SIZE 16384L |
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348 |
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349 |
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350 /*************************************************************************/ |
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351 /* */ |
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352 /* FT_MAX_MODULES */ |
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353 /* */ |
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354 /* The maximum number of modules that can be registered in a single */ |
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355 /* FreeType library object. 32 is the default. */ |
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356 /* */ |
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357 #define FT_MAX_MODULES 32 |
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358 |
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359 |
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360 /*************************************************************************/ |
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361 /* */ |
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362 /* Debug level */ |
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363 /* */ |
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364 /* FreeType can be compiled in debug or trace mode. In debug mode, */ |
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365 /* errors are reported through the `ftdebug' component. In trace */ |
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366 /* mode, additional messages are sent to the standard output during */ |
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367 /* execution. */ |
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368 /* */ |
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369 /* Define FT_DEBUG_LEVEL_ERROR to build the library in debug mode. */ |
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370 /* Define FT_DEBUG_LEVEL_TRACE to build it in trace mode. */ |
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371 /* */ |
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372 /* Don't define any of these macros to compile in `release' mode! */ |
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373 /* */ |
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374 /* Do not #undef these macros here since the build system might define */ |
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375 /* them for certain configurations only. */ |
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376 /* */ |
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377 #define FT_DEBUG_LEVEL_ERROR |
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378 #define FT_DEBUG_LEVEL_TRACE |
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379 |
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380 |
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381 /*************************************************************************/ |
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382 /* */ |
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383 /* Autofitter debugging */ |
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384 /* */ |
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385 /* If FT_DEBUG_AUTOFIT is defined, FreeType provides some means to */ |
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386 /* control the autofitter behaviour for debugging purposes with global */ |
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387 /* boolean variables (consequently, you should *never* enable this */ |
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388 /* while compiling in `release' mode): */ |
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389 /* */ |
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390 /* _af_debug_disable_horz_hints */ |
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391 /* _af_debug_disable_vert_hints */ |
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392 /* _af_debug_disable_blue_hints */ |
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393 /* */ |
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394 /* Additionally, the following functions provide dumps of various */ |
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395 /* internal autofit structures to stdout (using `printf'): */ |
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396 /* */ |
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397 /* af_glyph_hints_dump_points */ |
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398 /* af_glyph_hints_dump_segments */ |
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399 /* af_glyph_hints_dump_edges */ |
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400 /* */ |
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401 /* As an argument, they use another global variable: */ |
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402 /* */ |
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403 /* _af_debug_hints */ |
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404 /* */ |
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405 /* Please have a look at the `ftgrid' demo program to see how those */ |
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406 /* variables and macros should be used. */ |
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407 /* */ |
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408 /* Do not #undef these macros here since the build system might define */ |
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409 /* them for certain configurations only. */ |
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410 /* */ |
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411 #define FT_DEBUG_AUTOFIT |
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412 |
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413 |
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414 /*************************************************************************/ |
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415 /* */ |
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416 /* Memory Debugging */ |
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417 /* */ |
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418 /* FreeType now comes with an integrated memory debugger that is */ |
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419 /* capable of detecting simple errors like memory leaks or double */ |
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420 /* deletes. To compile it within your build of the library, you */ |
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421 /* should define FT_DEBUG_MEMORY here. */ |
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422 /* */ |
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423 /* Note that the memory debugger is only activated at runtime when */ |
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424 /* when the _environment_ variable `FT2_DEBUG_MEMORY' is defined also! */ |
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425 /* */ |
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426 /* Do not #undef this macro here since the build system might define */ |
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427 /* it for certain configurations only. */ |
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428 /* */ |
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429 #define FT_DEBUG_MEMORY |
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430 |
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431 |
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432 /*************************************************************************/ |
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433 /* */ |
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434 /* Module errors */ |
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435 /* */ |
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436 /* If this macro is set (which is _not_ the default), the higher byte */ |
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437 /* of an error code gives the module in which the error has occurred, */ |
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438 /* while the lower byte is the real error code. */ |
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439 /* */ |
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440 /* Setting this macro makes sense for debugging purposes only, since */ |
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441 /* it would break source compatibility of certain programs that use */ |
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442 /* FreeType 2. */ |
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443 /* */ |
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444 /* More details can be found in the files ftmoderr.h and fterrors.h. */ |
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445 /* */ |
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446 #undef FT_CONFIG_OPTION_USE_MODULE_ERRORS |
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447 |
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448 |
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449 /*************************************************************************/ |
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450 /* */ |
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451 /* Position Independent Code */ |
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452 /* */ |
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453 /* If this macro is set (which is _not_ the default), FreeType2 will */ |
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454 /* avoid creating constants that require address fixups. Instead the */ |
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455 /* constants will be moved into a struct and additional intialization */ |
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456 /* code will be used. */ |
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457 /* */ |
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458 /* Setting this macro is needed for systems that prohibit address */ |
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459 /* fixups, such as BREW. */ |
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460 /* */ |
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461 /* #define FT_CONFIG_OPTION_PIC */ |
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462 |
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463 |
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464 /*************************************************************************/ |
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465 /*************************************************************************/ |
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466 /**** ****/ |
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467 /**** S F N T D R I V E R C O N F I G U R A T I O N ****/ |
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468 /**** ****/ |
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469 /*************************************************************************/ |
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470 /*************************************************************************/ |
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471 |
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472 |
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473 /*************************************************************************/ |
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474 /* */ |
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475 /* Define TT_CONFIG_OPTION_EMBEDDED_BITMAPS if you want to support */ |
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476 /* embedded bitmaps in all formats using the SFNT module (namely */ |
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477 /* TrueType & OpenType). */ |
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478 /* */ |
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479 #define TT_CONFIG_OPTION_EMBEDDED_BITMAPS |
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480 |
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481 |
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482 /*************************************************************************/ |
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483 /* */ |
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484 /* Define TT_CONFIG_OPTION_POSTSCRIPT_NAMES if you want to be able to */ |
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485 /* load and enumerate the glyph Postscript names in a TrueType or */ |
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486 /* OpenType file. */ |
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487 /* */ |
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488 /* Note that when you do not compile the `PSNames' module by undefining */ |
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489 /* the above FT_CONFIG_OPTION_POSTSCRIPT_NAMES, the `sfnt' module will */ |
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490 /* contain additional code used to read the PS Names table from a font. */ |
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491 /* */ |
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492 /* (By default, the module uses `PSNames' to extract glyph names.) */ |
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493 /* */ |
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494 #define TT_CONFIG_OPTION_POSTSCRIPT_NAMES |
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495 |
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496 |
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497 /*************************************************************************/ |
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498 /* */ |
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499 /* Define TT_CONFIG_OPTION_SFNT_NAMES if your applications need to */ |
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500 /* access the internal name table in a SFNT-based format like TrueType */ |
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501 /* or OpenType. The name table contains various strings used to */ |
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502 /* describe the font, like family name, copyright, version, etc. It */ |
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503 /* does not contain any glyph name though. */ |
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504 /* */ |
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505 /* Accessing SFNT names is done through the functions declared in */ |
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506 /* `freetype/ftsnames.h'. */ |
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507 /* */ |
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508 #define TT_CONFIG_OPTION_SFNT_NAMES |
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509 |
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510 |
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511 /*************************************************************************/ |
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512 /* */ |
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513 /* TrueType CMap support */ |
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514 /* */ |
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515 /* Here you can fine-tune which TrueType CMap table format shall be */ |
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516 /* supported. */ |
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517 #define TT_CONFIG_CMAP_FORMAT_0 |
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518 #define TT_CONFIG_CMAP_FORMAT_2 |
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519 #define TT_CONFIG_CMAP_FORMAT_4 |
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520 #define TT_CONFIG_CMAP_FORMAT_6 |
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521 #define TT_CONFIG_CMAP_FORMAT_8 |
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522 #define TT_CONFIG_CMAP_FORMAT_10 |
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523 #define TT_CONFIG_CMAP_FORMAT_12 |
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524 #define TT_CONFIG_CMAP_FORMAT_13 |
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525 #define TT_CONFIG_CMAP_FORMAT_14 |
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526 |
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527 |
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528 /*************************************************************************/ |
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529 /*************************************************************************/ |
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530 /**** ****/ |
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531 /**** T R U E T Y P E D R I V E R C O N F I G U R A T I O N ****/ |
|
532 /**** ****/ |
|
533 /*************************************************************************/ |
|
534 /*************************************************************************/ |
|
535 |
|
536 /*************************************************************************/ |
|
537 /* */ |
|
538 /* Define TT_CONFIG_OPTION_BYTECODE_INTERPRETER if you want to compile */ |
|
539 /* a bytecode interpreter in the TrueType driver. */ |
|
540 /* */ |
|
541 /* By undefining this, you will only compile the code necessary to load */ |
|
542 /* TrueType glyphs without hinting. */ |
|
543 /* */ |
|
544 /* Do not #undef this macro here, since the build system might */ |
|
545 /* define it for certain configurations only. */ |
|
546 /* */ |
|
547 #define TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
|
548 |
|
549 |
|
550 /*************************************************************************/ |
|
551 /* */ |
|
552 /* If you define TT_CONFIG_OPTION_UNPATENTED_HINTING, a special version */ |
|
553 /* of the TrueType bytecode interpreter is used that doesn't implement */ |
|
554 /* any of the patented opcodes and algorithms. The patents related to */ |
|
555 /* TrueType hinting have expired worldwide since May 2010; this option */ |
|
556 /* is now deprecated. */ |
|
557 /* */ |
|
558 /* Note that the TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored* */ |
|
559 /* if you define TT_CONFIG_OPTION_BYTECODE_INTERPRETER; in other words, */ |
|
560 /* either define TT_CONFIG_OPTION_BYTECODE_INTERPRETER or */ |
|
561 /* TT_CONFIG_OPTION_UNPATENTED_HINTING but not both at the same time. */ |
|
562 /* */ |
|
563 /* This macro is only useful for a small number of font files (mostly */ |
|
564 /* for Asian scripts) that require bytecode interpretation to properly */ |
|
565 /* load glyphs. For all other fonts, this produces unpleasant results, */ |
|
566 /* thus the unpatented interpreter is never used to load glyphs from */ |
|
567 /* TrueType fonts unless one of the following two options is used. */ |
|
568 /* */ |
|
569 /* - The unpatented interpreter is explicitly activated by the user */ |
|
570 /* through the FT_PARAM_TAG_UNPATENTED_HINTING parameter tag */ |
|
571 /* when opening the FT_Face. */ |
|
572 /* */ |
|
573 /* - FreeType detects that the FT_Face corresponds to one of the */ |
|
574 /* `trick' fonts (e.g., `Mingliu') it knows about. The font engine */ |
|
575 /* contains a hard-coded list of font names and other matching */ |
|
576 /* parameters (see function `tt_face_init' in file */ |
|
577 /* `src/truetype/ttobjs.c'). */ |
|
578 /* */ |
|
579 /* Here a sample code snippet for using FT_PARAM_TAG_UNPATENTED_HINTING. */ |
|
580 /* */ |
|
581 /* { */ |
|
582 /* FT_Parameter parameter; */ |
|
583 /* FT_Open_Args open_args; */ |
|
584 /* */ |
|
585 /* */ |
|
586 /* parameter.tag = FT_PARAM_TAG_UNPATENTED_HINTING; */ |
|
587 /* */ |
|
588 /* open_args.flags = FT_OPEN_PATHNAME | FT_OPEN_PARAMS; */ |
|
589 /* open_args.pathname = my_font_pathname; */ |
|
590 /* open_args.num_params = 1; */ |
|
591 /* open_args.params = ¶meter; */ |
|
592 /* */ |
|
593 /* error = FT_Open_Face( library, &open_args, index, &face ); */ |
|
594 /* ... */ |
|
595 /* } */ |
|
596 /* */ |
|
597 /* #define TT_CONFIG_OPTION_UNPATENTED_HINTING */ |
|
598 |
|
599 |
|
600 /*************************************************************************/ |
|
601 /* */ |
|
602 /* Define TT_CONFIG_OPTION_INTERPRETER_SWITCH to compile the TrueType */ |
|
603 /* bytecode interpreter with a huge switch statement, rather than a call */ |
|
604 /* table. This results in smaller and faster code for a number of */ |
|
605 /* architectures. */ |
|
606 /* */ |
|
607 /* Note however that on some compiler/processor combinations, undefining */ |
|
608 /* this macro will generate faster, though larger, code. */ |
|
609 /* */ |
|
610 #define TT_CONFIG_OPTION_INTERPRETER_SWITCH |
|
611 |
|
612 |
|
613 /*************************************************************************/ |
|
614 /* */ |
|
615 /* Define TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED to compile the */ |
|
616 /* TrueType glyph loader to use Apple's definition of how to handle */ |
|
617 /* component offsets in composite glyphs. */ |
|
618 /* */ |
|
619 /* Apple and MS disagree on the default behavior of component offsets */ |
|
620 /* in composites. Apple says that they should be scaled by the scaling */ |
|
621 /* factors in the transformation matrix (roughly, it's more complex) */ |
|
622 /* while MS says they should not. OpenType defines two bits in the */ |
|
623 /* composite flags array which can be used to disambiguate, but old */ |
|
624 /* fonts will not have them. */ |
|
625 /* */ |
|
626 /* http://partners.adobe.com/asn/developer/opentype/glyf.html */ |
|
627 /* http://fonts.apple.com/TTRefMan/RM06/Chap6glyf.html */ |
|
628 /* */ |
|
629 #undef TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED |
|
630 |
|
631 |
|
632 /*************************************************************************/ |
|
633 /* */ |
|
634 /* Define TT_CONFIG_OPTION_GX_VAR_SUPPORT if you want to include */ |
|
635 /* support for Apple's distortable font technology (fvar, gvar, cvar, */ |
|
636 /* and avar tables). This has many similarities to Type 1 Multiple */ |
|
637 /* Masters support. */ |
|
638 /* */ |
|
639 #define TT_CONFIG_OPTION_GX_VAR_SUPPORT |
|
640 |
|
641 |
|
642 /*************************************************************************/ |
|
643 /* */ |
|
644 /* Define TT_CONFIG_OPTION_BDF if you want to include support for */ |
|
645 /* an embedded `BDF ' table within SFNT-based bitmap formats. */ |
|
646 /* */ |
|
647 #define TT_CONFIG_OPTION_BDF |
|
648 |
|
649 |
|
650 /*************************************************************************/ |
|
651 /*************************************************************************/ |
|
652 /**** ****/ |
|
653 /**** T Y P E 1 D R I V E R C O N F I G U R A T I O N ****/ |
|
654 /**** ****/ |
|
655 /*************************************************************************/ |
|
656 /*************************************************************************/ |
|
657 |
|
658 |
|
659 /*************************************************************************/ |
|
660 /* */ |
|
661 /* T1_MAX_DICT_DEPTH is the maximal depth of nest dictionaries and */ |
|
662 /* arrays in the Type 1 stream (see t1load.c). A minimum of 4 is */ |
|
663 /* required. */ |
|
664 /* */ |
|
665 #define T1_MAX_DICT_DEPTH 5 |
|
666 |
|
667 |
|
668 /*************************************************************************/ |
|
669 /* */ |
|
670 /* T1_MAX_SUBRS_CALLS details the maximum number of nested sub-routine */ |
|
671 /* calls during glyph loading. */ |
|
672 /* */ |
|
673 #define T1_MAX_SUBRS_CALLS 16 |
|
674 |
|
675 |
|
676 /*************************************************************************/ |
|
677 /* */ |
|
678 /* T1_MAX_CHARSTRING_OPERANDS is the charstring stack's capacity. A */ |
|
679 /* minimum of 16 is required. */ |
|
680 /* */ |
|
681 /* The Chinese font MingTiEG-Medium (CNS 11643 character set) needs 256. */ |
|
682 /* */ |
|
683 #define T1_MAX_CHARSTRINGS_OPERANDS 256 |
|
684 |
|
685 |
|
686 /*************************************************************************/ |
|
687 /* */ |
|
688 /* Define this configuration macro if you want to prevent the */ |
|
689 /* compilation of `t1afm', which is in charge of reading Type 1 AFM */ |
|
690 /* files into an existing face. Note that if set, the T1 driver will be */ |
|
691 /* unable to produce kerning distances. */ |
|
692 /* */ |
|
693 #undef T1_CONFIG_OPTION_NO_AFM |
|
694 |
|
695 |
|
696 /*************************************************************************/ |
|
697 /* */ |
|
698 /* Define this configuration macro if you want to prevent the */ |
|
699 /* compilation of the Multiple Masters font support in the Type 1 */ |
|
700 /* driver. */ |
|
701 /* */ |
|
702 #undef T1_CONFIG_OPTION_NO_MM_SUPPORT |
|
703 |
|
704 |
|
705 /*************************************************************************/ |
|
706 /*************************************************************************/ |
|
707 /**** ****/ |
|
708 /**** A U T O F I T M O D U L E C O N F I G U R A T I O N ****/ |
|
709 /**** ****/ |
|
710 /*************************************************************************/ |
|
711 /*************************************************************************/ |
|
712 |
|
713 |
|
714 /*************************************************************************/ |
|
715 /* */ |
|
716 /* Compile autofit module with CJK (Chinese, Japanese, Korean) script */ |
|
717 /* support. */ |
|
718 /* */ |
|
719 #define AF_CONFIG_OPTION_CJK |
|
720 |
|
721 /*************************************************************************/ |
|
722 /* */ |
|
723 /* Compile autofit module with Indic script support. */ |
|
724 /* */ |
|
725 #define AF_CONFIG_OPTION_INDIC |
|
726 |
|
727 /*************************************************************************/ |
|
728 /* */ |
|
729 /* Compile autofit module with warp hinting. The idea of the warping */ |
|
730 /* code is to slightly scale and shift a glyph within a single dimension */ |
|
731 /* so that as much of its segments are aligned (more or less) on the */ |
|
732 /* grid. To find out the optimal scaling and shifting value, various */ |
|
733 /* parameter combinations are tried and scored. */ |
|
734 /* */ |
|
735 /* This experimental option is only active if the render mode is */ |
|
736 /* FT_RENDER_MODE_LIGHT. */ |
|
737 /* */ |
|
738 #define AF_CONFIG_OPTION_USE_WARPER |
|
739 |
|
740 /* */ |
|
741 |
|
742 |
|
743 /* |
|
744 * Define this variable if you want to keep the layout of internal |
|
745 * structures that was used prior to FreeType 2.2. This also compiles in |
|
746 * a few obsolete functions to avoid linking problems on typical Unix |
|
747 * distributions. |
|
748 * |
|
749 * For embedded systems or building a new distribution from scratch, it |
|
750 * is recommended to disable the macro since it reduces the library's code |
|
751 * size and activates a few memory-saving optimizations as well. |
|
752 */ |
|
753 #define FT_CONFIG_OPTION_OLD_INTERNALS |
|
754 |
|
755 |
|
756 /* |
|
757 * To detect legacy cache-lookup call from a rogue client (<= 2.1.7), |
|
758 * we restrict the number of charmaps in a font. The current API of |
|
759 * FTC_CMapCache_Lookup() takes cmap_index & charcode, but old API |
|
760 * takes charcode only. To determine the passed value is for cmap_index |
|
761 * or charcode, the possible cmap_index is restricted not to exceed |
|
762 * the minimum possible charcode by a rogue client. It is also very |
|
763 * unlikely that a rogue client is interested in Unicode values 0 to 15. |
|
764 * |
|
765 * NOTE: The original threshold was 4 deduced from popular number of |
|
766 * cmap subtables in UCS-4 TrueType fonts, but now it is not |
|
767 * irregular for OpenType fonts to have more than 4 subtables, |
|
768 * because variation selector subtables are available for Apple |
|
769 * and Microsoft platforms. |
|
770 */ |
|
771 |
|
772 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS |
|
773 #define FT_MAX_CHARMAP_CACHEABLE 15 |
|
774 #endif |
|
775 |
|
776 |
|
777 /* |
|
778 * This macro is defined if either unpatented or native TrueType |
|
779 * hinting is requested by the definitions above. |
|
780 */ |
|
781 #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
|
782 #define TT_USE_BYTECODE_INTERPRETER |
|
783 #undef TT_CONFIG_OPTION_UNPATENTED_HINTING |
|
784 #elif defined TT_CONFIG_OPTION_UNPATENTED_HINTING |
|
785 #define TT_USE_BYTECODE_INTERPRETER |
|
786 #endif |
|
787 |
|
788 FT_END_HEADER |
|
789 |
|
790 |
|
791 #endif /* __FTOPTION_H__ */ |
|
792 |
|
793 |
|
794 /* END */ |
|