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1 /***************************************************************************/ |
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2 /* */ |
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3 /* ftobjs.c */ |
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4 /* */ |
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5 /* The FreeType private base classes (body). */ |
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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 #include <ft2build.h> |
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20 #include FT_LIST_H |
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21 #include FT_OUTLINE_H |
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22 #include FT_INTERNAL_VALIDATE_H |
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23 #include FT_INTERNAL_OBJECTS_H |
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24 #include FT_INTERNAL_DEBUG_H |
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25 #include FT_INTERNAL_RFORK_H |
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26 #include FT_INTERNAL_STREAM_H |
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27 #include FT_INTERNAL_SFNT_H /* for SFNT_Load_Table_Func */ |
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28 #include FT_TRUETYPE_TABLES_H |
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29 #include FT_TRUETYPE_TAGS_H |
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30 #include FT_TRUETYPE_IDS_H |
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31 |
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32 #include FT_SERVICE_SFNT_H |
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33 #include FT_SERVICE_POSTSCRIPT_NAME_H |
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34 #include FT_SERVICE_GLYPH_DICT_H |
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35 #include FT_SERVICE_TT_CMAP_H |
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36 #include FT_SERVICE_KERNING_H |
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37 #include FT_SERVICE_TRUETYPE_ENGINE_H |
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38 |
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39 #ifdef FT_CONFIG_OPTION_MAC_FONTS |
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40 #include "ftbase.h" |
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41 #endif |
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42 |
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43 #define GRID_FIT_METRICS |
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44 |
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45 |
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46 FT_BASE_DEF( FT_Pointer ) |
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47 ft_service_list_lookup( FT_ServiceDesc service_descriptors, |
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48 const char* service_id ) |
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49 { |
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50 FT_Pointer result = NULL; |
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51 FT_ServiceDesc desc = service_descriptors; |
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52 |
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53 |
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54 if ( desc && service_id ) |
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55 { |
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56 for ( ; desc->serv_id != NULL; desc++ ) |
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57 { |
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58 if ( ft_strcmp( desc->serv_id, service_id ) == 0 ) |
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59 { |
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60 result = (FT_Pointer)desc->serv_data; |
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61 break; |
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62 } |
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63 } |
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64 } |
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65 |
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66 return result; |
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67 } |
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68 |
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69 |
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70 FT_BASE_DEF( void ) |
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71 ft_validator_init( FT_Validator valid, |
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72 const FT_Byte* base, |
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73 const FT_Byte* limit, |
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74 FT_ValidationLevel level ) |
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75 { |
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76 valid->base = base; |
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77 valid->limit = limit; |
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78 valid->level = level; |
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79 valid->error = FT_Err_Ok; |
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80 } |
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81 |
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82 |
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83 FT_BASE_DEF( FT_Int ) |
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84 ft_validator_run( FT_Validator valid ) |
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85 { |
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86 /* This function doesn't work! None should call it. */ |
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87 FT_UNUSED( valid ); |
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88 |
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89 return -1; |
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90 } |
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91 |
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92 |
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93 FT_BASE_DEF( void ) |
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94 ft_validator_error( FT_Validator valid, |
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95 FT_Error error ) |
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96 { |
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97 /* since the cast below also disables the compiler's */ |
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98 /* type check, we introduce a dummy variable, which */ |
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99 /* will be optimized away */ |
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100 volatile ft_jmp_buf* jump_buffer = &valid->jump_buffer; |
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101 |
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102 |
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103 valid->error = error; |
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104 |
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105 /* throw away volatileness; use `jump_buffer' or the */ |
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106 /* compiler may warn about an unused local variable */ |
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107 ft_longjmp( *(ft_jmp_buf*) jump_buffer, 1 ); |
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108 } |
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109 |
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110 |
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111 /*************************************************************************/ |
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112 /*************************************************************************/ |
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113 /*************************************************************************/ |
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114 /**** ****/ |
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115 /**** ****/ |
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116 /**** S T R E A M ****/ |
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117 /**** ****/ |
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118 /**** ****/ |
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119 /*************************************************************************/ |
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120 /*************************************************************************/ |
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121 /*************************************************************************/ |
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122 |
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123 |
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124 /* create a new input stream from an FT_Open_Args structure */ |
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125 /* */ |
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126 FT_BASE_DEF( FT_Error ) |
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127 FT_Stream_New( FT_Library library, |
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128 const FT_Open_Args* args, |
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129 FT_Stream *astream ) |
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130 { |
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131 FT_Error error; |
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132 FT_Memory memory; |
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133 FT_Stream stream; |
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134 |
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135 |
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136 *astream = 0; |
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137 |
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138 if ( !library ) |
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139 return FT_Err_Invalid_Library_Handle; |
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140 |
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141 if ( !args ) |
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142 return FT_Err_Invalid_Argument; |
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143 |
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144 memory = library->memory; |
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145 |
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146 if ( FT_NEW( stream ) ) |
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147 goto Exit; |
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148 |
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149 stream->memory = memory; |
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150 |
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151 if ( args->flags & FT_OPEN_MEMORY ) |
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152 { |
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153 /* create a memory-based stream */ |
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154 FT_Stream_OpenMemory( stream, |
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155 (const FT_Byte*)args->memory_base, |
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156 args->memory_size ); |
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157 } |
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158 else if ( args->flags & FT_OPEN_PATHNAME ) |
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159 { |
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160 /* create a normal system stream */ |
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161 error = FT_Stream_Open( stream, args->pathname ); |
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162 stream->pathname.pointer = args->pathname; |
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163 } |
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164 else if ( ( args->flags & FT_OPEN_STREAM ) && args->stream ) |
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165 { |
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166 /* use an existing, user-provided stream */ |
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167 |
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168 /* in this case, we do not need to allocate a new stream object */ |
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169 /* since the caller is responsible for closing it himself */ |
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170 FT_FREE( stream ); |
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171 stream = args->stream; |
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172 } |
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173 else |
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174 error = FT_Err_Invalid_Argument; |
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175 |
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176 if ( error ) |
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177 FT_FREE( stream ); |
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178 else |
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179 stream->memory = memory; /* just to be certain */ |
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180 |
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181 *astream = stream; |
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182 |
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183 Exit: |
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184 return error; |
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185 } |
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186 |
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187 |
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188 FT_BASE_DEF( void ) |
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189 FT_Stream_Free( FT_Stream stream, |
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190 FT_Int external ) |
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191 { |
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192 if ( stream ) |
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193 { |
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194 FT_Memory memory = stream->memory; |
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195 |
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196 |
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197 FT_Stream_Close( stream ); |
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198 |
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199 if ( !external ) |
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200 FT_FREE( stream ); |
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201 } |
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202 } |
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203 |
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204 |
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205 /*************************************************************************/ |
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206 /* */ |
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207 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ |
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208 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ |
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209 /* messages during execution. */ |
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210 /* */ |
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211 #undef FT_COMPONENT |
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212 #define FT_COMPONENT trace_objs |
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213 |
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214 |
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215 /*************************************************************************/ |
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216 /*************************************************************************/ |
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217 /*************************************************************************/ |
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218 /**** ****/ |
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219 /**** ****/ |
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220 /**** FACE, SIZE & GLYPH SLOT OBJECTS ****/ |
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221 /**** ****/ |
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222 /**** ****/ |
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223 /*************************************************************************/ |
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224 /*************************************************************************/ |
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225 /*************************************************************************/ |
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226 |
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227 |
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228 static FT_Error |
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229 ft_glyphslot_init( FT_GlyphSlot slot ) |
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230 { |
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231 FT_Driver driver = slot->face->driver; |
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232 FT_Driver_Class clazz = driver->clazz; |
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233 FT_Memory memory = driver->root.memory; |
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234 FT_Error error = FT_Err_Ok; |
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235 FT_Slot_Internal internal = NULL; |
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236 |
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237 |
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238 slot->library = driver->root.library; |
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239 |
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240 if ( FT_NEW( internal ) ) |
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241 goto Exit; |
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242 |
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243 slot->internal = internal; |
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244 |
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245 if ( FT_DRIVER_USES_OUTLINES( driver ) ) |
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246 error = FT_GlyphLoader_New( memory, &internal->loader ); |
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247 |
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248 if ( !error && clazz->init_slot ) |
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249 error = clazz->init_slot( slot ); |
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250 |
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251 Exit: |
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252 return error; |
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253 } |
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254 |
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255 |
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256 FT_BASE_DEF( void ) |
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257 ft_glyphslot_free_bitmap( FT_GlyphSlot slot ) |
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258 { |
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259 if ( slot->internal && ( slot->internal->flags & FT_GLYPH_OWN_BITMAP ) ) |
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260 { |
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261 FT_Memory memory = FT_FACE_MEMORY( slot->face ); |
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262 |
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263 |
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264 FT_FREE( slot->bitmap.buffer ); |
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265 slot->internal->flags &= ~FT_GLYPH_OWN_BITMAP; |
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266 } |
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267 else |
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268 { |
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269 /* assume that the bitmap buffer was stolen or not */ |
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270 /* allocated from the heap */ |
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271 slot->bitmap.buffer = NULL; |
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272 } |
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273 } |
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274 |
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275 |
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276 FT_BASE_DEF( void ) |
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277 ft_glyphslot_set_bitmap( FT_GlyphSlot slot, |
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278 FT_Byte* buffer ) |
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279 { |
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280 ft_glyphslot_free_bitmap( slot ); |
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281 |
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282 slot->bitmap.buffer = buffer; |
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283 |
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284 FT_ASSERT( (slot->internal->flags & FT_GLYPH_OWN_BITMAP) == 0 ); |
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285 } |
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286 |
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287 |
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288 FT_BASE_DEF( FT_Error ) |
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289 ft_glyphslot_alloc_bitmap( FT_GlyphSlot slot, |
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290 FT_ULong size ) |
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291 { |
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292 FT_Memory memory = FT_FACE_MEMORY( slot->face ); |
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293 FT_Error error; |
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294 |
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295 |
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296 if ( slot->internal->flags & FT_GLYPH_OWN_BITMAP ) |
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297 FT_FREE( slot->bitmap.buffer ); |
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298 else |
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299 slot->internal->flags |= FT_GLYPH_OWN_BITMAP; |
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300 |
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301 (void)FT_ALLOC( slot->bitmap.buffer, size ); |
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302 return error; |
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303 } |
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304 |
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305 |
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306 static void |
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307 ft_glyphslot_clear( FT_GlyphSlot slot ) |
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308 { |
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309 /* free bitmap if needed */ |
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310 ft_glyphslot_free_bitmap( slot ); |
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311 |
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312 /* clear all public fields in the glyph slot */ |
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313 FT_ZERO( &slot->metrics ); |
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314 FT_ZERO( &slot->outline ); |
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315 |
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316 slot->bitmap.width = 0; |
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317 slot->bitmap.rows = 0; |
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318 slot->bitmap.pitch = 0; |
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319 slot->bitmap.pixel_mode = 0; |
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320 /* `slot->bitmap.buffer' has been handled by ft_glyphslot_free_bitmap */ |
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321 |
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322 slot->bitmap_left = 0; |
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323 slot->bitmap_top = 0; |
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324 slot->num_subglyphs = 0; |
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325 slot->subglyphs = 0; |
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326 slot->control_data = 0; |
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327 slot->control_len = 0; |
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328 slot->other = 0; |
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329 slot->format = FT_GLYPH_FORMAT_NONE; |
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330 |
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331 slot->linearHoriAdvance = 0; |
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332 slot->linearVertAdvance = 0; |
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333 slot->lsb_delta = 0; |
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334 slot->rsb_delta = 0; |
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335 } |
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336 |
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337 |
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338 static void |
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339 ft_glyphslot_done( FT_GlyphSlot slot ) |
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340 { |
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341 FT_Driver driver = slot->face->driver; |
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342 FT_Driver_Class clazz = driver->clazz; |
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343 FT_Memory memory = driver->root.memory; |
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344 |
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345 |
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346 if ( clazz->done_slot ) |
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347 clazz->done_slot( slot ); |
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348 |
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349 /* free bitmap buffer if needed */ |
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350 ft_glyphslot_free_bitmap( slot ); |
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351 |
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352 /* slot->internal might be NULL in out-of-memory situations */ |
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353 if ( slot->internal ) |
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354 { |
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355 /* free glyph loader */ |
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356 if ( FT_DRIVER_USES_OUTLINES( driver ) ) |
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357 { |
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358 FT_GlyphLoader_Done( slot->internal->loader ); |
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359 slot->internal->loader = 0; |
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360 } |
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361 |
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362 FT_FREE( slot->internal ); |
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363 } |
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364 } |
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365 |
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366 |
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367 /* documentation is in ftobjs.h */ |
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368 |
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369 FT_BASE_DEF( FT_Error ) |
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370 FT_New_GlyphSlot( FT_Face face, |
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371 FT_GlyphSlot *aslot ) |
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372 { |
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373 FT_Error error; |
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374 FT_Driver driver; |
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375 FT_Driver_Class clazz; |
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376 FT_Memory memory; |
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377 FT_GlyphSlot slot; |
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378 |
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379 |
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380 if ( !face || !face->driver ) |
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381 return FT_Err_Invalid_Argument; |
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382 |
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383 driver = face->driver; |
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384 clazz = driver->clazz; |
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385 memory = driver->root.memory; |
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386 |
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387 FT_TRACE4(( "FT_New_GlyphSlot: Creating new slot object\n" )); |
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388 if ( !FT_ALLOC( slot, clazz->slot_object_size ) ) |
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389 { |
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390 slot->face = face; |
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391 |
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392 error = ft_glyphslot_init( slot ); |
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393 if ( error ) |
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394 { |
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395 ft_glyphslot_done( slot ); |
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396 FT_FREE( slot ); |
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397 goto Exit; |
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398 } |
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399 |
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400 slot->next = face->glyph; |
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401 face->glyph = slot; |
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402 |
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403 if ( aslot ) |
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404 *aslot = slot; |
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405 } |
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406 else if ( aslot ) |
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407 *aslot = 0; |
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408 |
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409 |
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410 Exit: |
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411 FT_TRACE4(( "FT_New_GlyphSlot: Return %d\n", error )); |
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412 return error; |
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413 } |
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414 |
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415 |
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416 /* documentation is in ftobjs.h */ |
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417 |
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418 FT_BASE_DEF( void ) |
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419 FT_Done_GlyphSlot( FT_GlyphSlot slot ) |
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420 { |
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421 if ( slot ) |
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422 { |
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423 FT_Driver driver = slot->face->driver; |
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424 FT_Memory memory = driver->root.memory; |
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425 FT_GlyphSlot prev; |
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426 FT_GlyphSlot cur; |
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427 |
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428 |
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429 /* Remove slot from its parent face's list */ |
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430 prev = NULL; |
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431 cur = slot->face->glyph; |
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432 |
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433 while ( cur ) |
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434 { |
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435 if ( cur == slot ) |
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436 { |
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437 if ( !prev ) |
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438 slot->face->glyph = cur->next; |
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439 else |
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440 prev->next = cur->next; |
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441 |
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442 ft_glyphslot_done( slot ); |
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443 FT_FREE( slot ); |
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444 break; |
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445 } |
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446 prev = cur; |
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447 cur = cur->next; |
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448 } |
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449 } |
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450 } |
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451 |
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452 |
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453 /* documentation is in freetype.h */ |
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454 |
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455 FT_EXPORT_DEF( void ) |
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456 FT_Set_Transform( FT_Face face, |
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457 FT_Matrix* matrix, |
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458 FT_Vector* delta ) |
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459 { |
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460 FT_Face_Internal internal; |
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461 |
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462 |
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463 if ( !face ) |
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464 return; |
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465 |
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466 internal = face->internal; |
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467 |
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468 internal->transform_flags = 0; |
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469 |
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470 if ( !matrix ) |
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471 { |
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472 internal->transform_matrix.xx = 0x10000L; |
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473 internal->transform_matrix.xy = 0; |
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474 internal->transform_matrix.yx = 0; |
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475 internal->transform_matrix.yy = 0x10000L; |
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476 matrix = &internal->transform_matrix; |
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477 } |
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478 else |
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479 internal->transform_matrix = *matrix; |
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480 |
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481 /* set transform_flags bit flag 0 if `matrix' isn't the identity */ |
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482 if ( ( matrix->xy | matrix->yx ) || |
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483 matrix->xx != 0x10000L || |
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484 matrix->yy != 0x10000L ) |
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485 internal->transform_flags |= 1; |
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486 |
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487 if ( !delta ) |
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488 { |
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489 internal->transform_delta.x = 0; |
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490 internal->transform_delta.y = 0; |
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491 delta = &internal->transform_delta; |
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492 } |
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493 else |
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494 internal->transform_delta = *delta; |
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495 |
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496 /* set transform_flags bit flag 1 if `delta' isn't the null vector */ |
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497 if ( delta->x | delta->y ) |
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498 internal->transform_flags |= 2; |
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499 } |
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500 |
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501 |
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502 static FT_Renderer |
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503 ft_lookup_glyph_renderer( FT_GlyphSlot slot ); |
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504 |
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505 |
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506 #ifdef GRID_FIT_METRICS |
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507 static void |
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508 ft_glyphslot_grid_fit_metrics( FT_GlyphSlot slot, |
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509 FT_Bool vertical ) |
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510 { |
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511 FT_Glyph_Metrics* metrics = &slot->metrics; |
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512 FT_Pos right, bottom; |
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513 |
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514 |
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515 if ( vertical ) |
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516 { |
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517 metrics->horiBearingX = FT_PIX_FLOOR( metrics->horiBearingX ); |
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518 metrics->horiBearingY = FT_PIX_CEIL ( metrics->horiBearingY ); |
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519 |
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520 right = FT_PIX_CEIL( metrics->vertBearingX + metrics->width ); |
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521 bottom = FT_PIX_CEIL( metrics->vertBearingY + metrics->height ); |
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522 |
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523 metrics->vertBearingX = FT_PIX_FLOOR( metrics->vertBearingX ); |
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524 metrics->vertBearingY = FT_PIX_FLOOR( metrics->vertBearingY ); |
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525 |
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526 metrics->width = right - metrics->vertBearingX; |
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527 metrics->height = bottom - metrics->vertBearingY; |
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528 } |
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529 else |
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530 { |
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531 metrics->vertBearingX = FT_PIX_FLOOR( metrics->vertBearingX ); |
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532 metrics->vertBearingY = FT_PIX_FLOOR( metrics->vertBearingY ); |
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533 |
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534 right = FT_PIX_CEIL ( metrics->horiBearingX + metrics->width ); |
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535 bottom = FT_PIX_FLOOR( metrics->horiBearingY - metrics->height ); |
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536 |
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537 metrics->horiBearingX = FT_PIX_FLOOR( metrics->horiBearingX ); |
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538 metrics->horiBearingY = FT_PIX_CEIL ( metrics->horiBearingY ); |
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539 |
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540 metrics->width = right - metrics->horiBearingX; |
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541 metrics->height = metrics->horiBearingY - bottom; |
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542 } |
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543 |
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544 metrics->horiAdvance = FT_PIX_ROUND( metrics->horiAdvance ); |
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545 metrics->vertAdvance = FT_PIX_ROUND( metrics->vertAdvance ); |
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546 } |
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547 #endif /* GRID_FIT_METRICS */ |
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548 |
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549 |
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550 /* documentation is in freetype.h */ |
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551 |
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552 FT_EXPORT_DEF( FT_Error ) |
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553 FT_Load_Glyph( FT_Face face, |
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554 FT_UInt glyph_index, |
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555 FT_Int32 load_flags ) |
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556 { |
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557 FT_Error error; |
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558 FT_Driver driver; |
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559 FT_GlyphSlot slot; |
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560 FT_Library library; |
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561 FT_Bool autohint = FALSE; |
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562 FT_Module hinter; |
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563 TT_Face ttface = (TT_Face)face; |
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564 |
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565 |
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566 if ( !face || !face->size || !face->glyph ) |
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567 return FT_Err_Invalid_Face_Handle; |
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568 |
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569 /* The validity test for `glyph_index' is performed by the */ |
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570 /* font drivers. */ |
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571 |
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572 slot = face->glyph; |
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573 ft_glyphslot_clear( slot ); |
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574 |
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575 driver = face->driver; |
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576 library = driver->root.library; |
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577 hinter = library->auto_hinter; |
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578 |
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579 /* resolve load flags dependencies */ |
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580 |
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581 if ( load_flags & FT_LOAD_NO_RECURSE ) |
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582 load_flags |= FT_LOAD_NO_SCALE | |
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583 FT_LOAD_IGNORE_TRANSFORM; |
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584 |
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585 if ( load_flags & FT_LOAD_NO_SCALE ) |
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586 { |
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587 load_flags |= FT_LOAD_NO_HINTING | |
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588 FT_LOAD_NO_BITMAP; |
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589 |
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590 load_flags &= ~FT_LOAD_RENDER; |
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591 } |
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592 |
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593 /* |
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594 * Determine whether we need to auto-hint or not. |
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595 * The general rules are: |
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596 * |
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597 * - Do only auto-hinting if we have a hinter module, a scalable font |
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598 * format dealing with outlines, and no transforms except simple |
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599 * slants and/or rotations by integer multiples of 90 degrees. |
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600 * |
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601 * - Then, auto-hint if FT_LOAD_FORCE_AUTOHINT is set or if we don't |
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602 * have a native font hinter. |
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603 * |
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604 * - Otherwise, auto-hint for LIGHT hinting mode or if there isn't |
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605 * any hinting bytecode in the TrueType/OpenType font. |
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606 * |
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607 * - Exception: The font is `tricky' and requires the native hinter to |
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608 * load properly. |
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609 */ |
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610 |
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611 if ( hinter && |
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612 !( load_flags & FT_LOAD_NO_HINTING ) && |
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613 !( load_flags & FT_LOAD_NO_AUTOHINT ) && |
|
614 FT_DRIVER_IS_SCALABLE( driver ) && |
|
615 FT_DRIVER_USES_OUTLINES( driver ) && |
|
616 !FT_IS_TRICKY( face ) && |
|
617 ( ( face->internal->transform_matrix.yx == 0 && |
|
618 face->internal->transform_matrix.xx != 0 ) || |
|
619 ( face->internal->transform_matrix.xx == 0 && |
|
620 face->internal->transform_matrix.yx != 0 ) ) ) |
|
621 { |
|
622 if ( ( load_flags & FT_LOAD_FORCE_AUTOHINT ) || |
|
623 !FT_DRIVER_HAS_HINTER( driver ) ) |
|
624 autohint = TRUE; |
|
625 else |
|
626 { |
|
627 FT_Render_Mode mode = FT_LOAD_TARGET_MODE( load_flags ); |
|
628 |
|
629 |
|
630 /* the check for `num_locations' assures that we actually */ |
|
631 /* test for instructions in a TTF and not in a CFF-based OTF */ |
|
632 if ( mode == FT_RENDER_MODE_LIGHT || |
|
633 face->internal->ignore_unpatented_hinter || |
|
634 ( FT_IS_SFNT( face ) && |
|
635 ttface->num_locations && |
|
636 ttface->max_profile.maxSizeOfInstructions == 0 ) ) |
|
637 autohint = TRUE; |
|
638 } |
|
639 } |
|
640 |
|
641 if ( autohint ) |
|
642 { |
|
643 FT_AutoHinter_Service hinting; |
|
644 |
|
645 |
|
646 /* try to load embedded bitmaps first if available */ |
|
647 /* */ |
|
648 /* XXX: This is really a temporary hack that should disappear */ |
|
649 /* promptly with FreeType 2.1! */ |
|
650 /* */ |
|
651 if ( FT_HAS_FIXED_SIZES( face ) && |
|
652 ( load_flags & FT_LOAD_NO_BITMAP ) == 0 ) |
|
653 { |
|
654 error = driver->clazz->load_glyph( slot, face->size, |
|
655 glyph_index, |
|
656 load_flags | FT_LOAD_SBITS_ONLY ); |
|
657 |
|
658 if ( !error && slot->format == FT_GLYPH_FORMAT_BITMAP ) |
|
659 goto Load_Ok; |
|
660 } |
|
661 |
|
662 { |
|
663 FT_Face_Internal internal = face->internal; |
|
664 FT_Int transform_flags = internal->transform_flags; |
|
665 |
|
666 |
|
667 /* since the auto-hinter calls FT_Load_Glyph by itself, */ |
|
668 /* make sure that glyphs aren't transformed */ |
|
669 internal->transform_flags = 0; |
|
670 |
|
671 /* load auto-hinted outline */ |
|
672 hinting = (FT_AutoHinter_Service)hinter->clazz->module_interface; |
|
673 |
|
674 error = hinting->load_glyph( (FT_AutoHinter)hinter, |
|
675 slot, face->size, |
|
676 glyph_index, load_flags ); |
|
677 |
|
678 internal->transform_flags = transform_flags; |
|
679 } |
|
680 } |
|
681 else |
|
682 { |
|
683 error = driver->clazz->load_glyph( slot, |
|
684 face->size, |
|
685 glyph_index, |
|
686 load_flags ); |
|
687 if ( error ) |
|
688 goto Exit; |
|
689 |
|
690 if ( slot->format == FT_GLYPH_FORMAT_OUTLINE ) |
|
691 { |
|
692 /* check that the loaded outline is correct */ |
|
693 error = FT_Outline_Check( &slot->outline ); |
|
694 if ( error ) |
|
695 goto Exit; |
|
696 |
|
697 #ifdef GRID_FIT_METRICS |
|
698 if ( !( load_flags & FT_LOAD_NO_HINTING ) ) |
|
699 ft_glyphslot_grid_fit_metrics( slot, |
|
700 FT_BOOL( load_flags & FT_LOAD_VERTICAL_LAYOUT ) ); |
|
701 #endif |
|
702 } |
|
703 } |
|
704 |
|
705 Load_Ok: |
|
706 /* compute the advance */ |
|
707 if ( load_flags & FT_LOAD_VERTICAL_LAYOUT ) |
|
708 { |
|
709 slot->advance.x = 0; |
|
710 slot->advance.y = slot->metrics.vertAdvance; |
|
711 } |
|
712 else |
|
713 { |
|
714 slot->advance.x = slot->metrics.horiAdvance; |
|
715 slot->advance.y = 0; |
|
716 } |
|
717 |
|
718 /* compute the linear advance in 16.16 pixels */ |
|
719 if ( ( load_flags & FT_LOAD_LINEAR_DESIGN ) == 0 && |
|
720 ( FT_IS_SCALABLE( face ) ) ) |
|
721 { |
|
722 FT_Size_Metrics* metrics = &face->size->metrics; |
|
723 |
|
724 |
|
725 /* it's tricky! */ |
|
726 slot->linearHoriAdvance = FT_MulDiv( slot->linearHoriAdvance, |
|
727 metrics->x_scale, 64 ); |
|
728 |
|
729 slot->linearVertAdvance = FT_MulDiv( slot->linearVertAdvance, |
|
730 metrics->y_scale, 64 ); |
|
731 } |
|
732 |
|
733 if ( ( load_flags & FT_LOAD_IGNORE_TRANSFORM ) == 0 ) |
|
734 { |
|
735 FT_Face_Internal internal = face->internal; |
|
736 |
|
737 |
|
738 /* now, transform the glyph image if needed */ |
|
739 if ( internal->transform_flags ) |
|
740 { |
|
741 /* get renderer */ |
|
742 FT_Renderer renderer = ft_lookup_glyph_renderer( slot ); |
|
743 |
|
744 |
|
745 if ( renderer ) |
|
746 error = renderer->clazz->transform_glyph( |
|
747 renderer, slot, |
|
748 &internal->transform_matrix, |
|
749 &internal->transform_delta ); |
|
750 else if ( slot->format == FT_GLYPH_FORMAT_OUTLINE ) |
|
751 { |
|
752 /* apply `standard' transformation if no renderer is available */ |
|
753 if ( &internal->transform_matrix ) |
|
754 FT_Outline_Transform( &slot->outline, |
|
755 &internal->transform_matrix ); |
|
756 |
|
757 if ( &internal->transform_delta ) |
|
758 FT_Outline_Translate( &slot->outline, |
|
759 internal->transform_delta.x, |
|
760 internal->transform_delta.y ); |
|
761 } |
|
762 |
|
763 /* transform advance */ |
|
764 FT_Vector_Transform( &slot->advance, &internal->transform_matrix ); |
|
765 } |
|
766 } |
|
767 |
|
768 FT_TRACE5(( " x advance: %d\n" , slot->advance.x )); |
|
769 FT_TRACE5(( " y advance: %d\n" , slot->advance.y )); |
|
770 |
|
771 FT_TRACE5(( " linear x advance: %d\n" , slot->linearHoriAdvance )); |
|
772 FT_TRACE5(( " linear y advance: %d\n" , slot->linearVertAdvance )); |
|
773 |
|
774 /* do we need to render the image now? */ |
|
775 if ( !error && |
|
776 slot->format != FT_GLYPH_FORMAT_BITMAP && |
|
777 slot->format != FT_GLYPH_FORMAT_COMPOSITE && |
|
778 load_flags & FT_LOAD_RENDER ) |
|
779 { |
|
780 FT_Render_Mode mode = FT_LOAD_TARGET_MODE( load_flags ); |
|
781 |
|
782 |
|
783 if ( mode == FT_RENDER_MODE_NORMAL && |
|
784 (load_flags & FT_LOAD_MONOCHROME ) ) |
|
785 mode = FT_RENDER_MODE_MONO; |
|
786 |
|
787 error = FT_Render_Glyph( slot, mode ); |
|
788 } |
|
789 |
|
790 Exit: |
|
791 return error; |
|
792 } |
|
793 |
|
794 |
|
795 /* documentation is in freetype.h */ |
|
796 |
|
797 FT_EXPORT_DEF( FT_Error ) |
|
798 FT_Load_Char( FT_Face face, |
|
799 FT_ULong char_code, |
|
800 FT_Int32 load_flags ) |
|
801 { |
|
802 FT_UInt glyph_index; |
|
803 |
|
804 |
|
805 if ( !face ) |
|
806 return FT_Err_Invalid_Face_Handle; |
|
807 |
|
808 glyph_index = (FT_UInt)char_code; |
|
809 if ( face->charmap ) |
|
810 glyph_index = FT_Get_Char_Index( face, char_code ); |
|
811 |
|
812 return FT_Load_Glyph( face, glyph_index, load_flags ); |
|
813 } |
|
814 |
|
815 |
|
816 /* destructor for sizes list */ |
|
817 static void |
|
818 destroy_size( FT_Memory memory, |
|
819 FT_Size size, |
|
820 FT_Driver driver ) |
|
821 { |
|
822 /* finalize client-specific data */ |
|
823 if ( size->generic.finalizer ) |
|
824 size->generic.finalizer( size ); |
|
825 |
|
826 /* finalize format-specific stuff */ |
|
827 if ( driver->clazz->done_size ) |
|
828 driver->clazz->done_size( size ); |
|
829 |
|
830 FT_FREE( size->internal ); |
|
831 FT_FREE( size ); |
|
832 } |
|
833 |
|
834 |
|
835 static void |
|
836 ft_cmap_done_internal( FT_CMap cmap ); |
|
837 |
|
838 |
|
839 static void |
|
840 destroy_charmaps( FT_Face face, |
|
841 FT_Memory memory ) |
|
842 { |
|
843 FT_Int n; |
|
844 |
|
845 |
|
846 if ( !face ) |
|
847 return; |
|
848 |
|
849 for ( n = 0; n < face->num_charmaps; n++ ) |
|
850 { |
|
851 FT_CMap cmap = FT_CMAP( face->charmaps[n] ); |
|
852 |
|
853 |
|
854 ft_cmap_done_internal( cmap ); |
|
855 |
|
856 face->charmaps[n] = NULL; |
|
857 } |
|
858 |
|
859 FT_FREE( face->charmaps ); |
|
860 face->num_charmaps = 0; |
|
861 } |
|
862 |
|
863 |
|
864 /* destructor for faces list */ |
|
865 static void |
|
866 destroy_face( FT_Memory memory, |
|
867 FT_Face face, |
|
868 FT_Driver driver ) |
|
869 { |
|
870 FT_Driver_Class clazz = driver->clazz; |
|
871 |
|
872 |
|
873 /* discard auto-hinting data */ |
|
874 if ( face->autohint.finalizer ) |
|
875 face->autohint.finalizer( face->autohint.data ); |
|
876 |
|
877 /* Discard glyph slots for this face. */ |
|
878 /* Beware! FT_Done_GlyphSlot() changes the field `face->glyph' */ |
|
879 while ( face->glyph ) |
|
880 FT_Done_GlyphSlot( face->glyph ); |
|
881 |
|
882 /* discard all sizes for this face */ |
|
883 FT_List_Finalize( &face->sizes_list, |
|
884 (FT_List_Destructor)destroy_size, |
|
885 memory, |
|
886 driver ); |
|
887 face->size = 0; |
|
888 |
|
889 /* now discard client data */ |
|
890 if ( face->generic.finalizer ) |
|
891 face->generic.finalizer( face ); |
|
892 |
|
893 /* discard charmaps */ |
|
894 destroy_charmaps( face, memory ); |
|
895 |
|
896 /* finalize format-specific stuff */ |
|
897 if ( clazz->done_face ) |
|
898 clazz->done_face( face ); |
|
899 |
|
900 /* close the stream for this face if needed */ |
|
901 FT_Stream_Free( |
|
902 face->stream, |
|
903 ( face->face_flags & FT_FACE_FLAG_EXTERNAL_STREAM ) != 0 ); |
|
904 |
|
905 face->stream = 0; |
|
906 |
|
907 /* get rid of it */ |
|
908 if ( face->internal ) |
|
909 { |
|
910 FT_FREE( face->internal ); |
|
911 } |
|
912 FT_FREE( face ); |
|
913 } |
|
914 |
|
915 |
|
916 static void |
|
917 Destroy_Driver( FT_Driver driver ) |
|
918 { |
|
919 FT_List_Finalize( &driver->faces_list, |
|
920 (FT_List_Destructor)destroy_face, |
|
921 driver->root.memory, |
|
922 driver ); |
|
923 |
|
924 /* check whether we need to drop the driver's glyph loader */ |
|
925 if ( FT_DRIVER_USES_OUTLINES( driver ) ) |
|
926 FT_GlyphLoader_Done( driver->glyph_loader ); |
|
927 } |
|
928 |
|
929 |
|
930 /*************************************************************************/ |
|
931 /* */ |
|
932 /* <Function> */ |
|
933 /* find_unicode_charmap */ |
|
934 /* */ |
|
935 /* <Description> */ |
|
936 /* This function finds a Unicode charmap, if there is one. */ |
|
937 /* And if there is more than one, it tries to favour the more */ |
|
938 /* extensive one, i.e., one that supports UCS-4 against those which */ |
|
939 /* are limited to the BMP (said UCS-2 encoding.) */ |
|
940 /* */ |
|
941 /* This function is called from open_face() (just below), and also */ |
|
942 /* from FT_Select_Charmap( ..., FT_ENCODING_UNICODE ). */ |
|
943 /* */ |
|
944 static FT_Error |
|
945 find_unicode_charmap( FT_Face face ) |
|
946 { |
|
947 FT_CharMap* first; |
|
948 FT_CharMap* cur; |
|
949 |
|
950 |
|
951 /* caller should have already checked that `face' is valid */ |
|
952 FT_ASSERT( face ); |
|
953 |
|
954 first = face->charmaps; |
|
955 |
|
956 if ( !first ) |
|
957 return FT_Err_Invalid_CharMap_Handle; |
|
958 |
|
959 /* |
|
960 * The original TrueType specification(s) only specified charmap |
|
961 * formats that are capable of mapping 8 or 16 bit character codes to |
|
962 * glyph indices. |
|
963 * |
|
964 * However, recent updates to the Apple and OpenType specifications |
|
965 * introduced new formats that are capable of mapping 32-bit character |
|
966 * codes as well. And these are already used on some fonts, mainly to |
|
967 * map non-BMP Asian ideographs as defined in Unicode. |
|
968 * |
|
969 * For compatibility purposes, these fonts generally come with |
|
970 * *several* Unicode charmaps: |
|
971 * |
|
972 * - One of them in the "old" 16-bit format, that cannot access |
|
973 * all glyphs in the font. |
|
974 * |
|
975 * - Another one in the "new" 32-bit format, that can access all |
|
976 * the glyphs. |
|
977 * |
|
978 * This function has been written to always favor a 32-bit charmap |
|
979 * when found. Otherwise, a 16-bit one is returned when found. |
|
980 */ |
|
981 |
|
982 /* Since the `interesting' table, with IDs (3,10), is normally the */ |
|
983 /* last one, we loop backwards. This loses with type1 fonts with */ |
|
984 /* non-BMP characters (<.0001%), this wins with .ttf with non-BMP */ |
|
985 /* chars (.01% ?), and this is the same about 99.99% of the time! */ |
|
986 |
|
987 cur = first + face->num_charmaps; /* points after the last one */ |
|
988 |
|
989 for ( ; --cur >= first; ) |
|
990 { |
|
991 if ( cur[0]->encoding == FT_ENCODING_UNICODE ) |
|
992 { |
|
993 /* XXX If some new encodings to represent UCS-4 are added, */ |
|
994 /* they should be added here. */ |
|
995 if ( ( cur[0]->platform_id == TT_PLATFORM_MICROSOFT && |
|
996 cur[0]->encoding_id == TT_MS_ID_UCS_4 ) || |
|
997 ( cur[0]->platform_id == TT_PLATFORM_APPLE_UNICODE && |
|
998 cur[0]->encoding_id == TT_APPLE_ID_UNICODE_32 ) ) |
|
999 { |
|
1000 #ifdef FT_MAX_CHARMAP_CACHEABLE |
|
1001 if ( cur - first > FT_MAX_CHARMAP_CACHEABLE ) |
|
1002 { |
|
1003 FT_ERROR(( "find_unicode_charmap: UCS-4 cmap is found " |
|
1004 "at too late position (%d)\n", cur - first )); |
|
1005 continue; |
|
1006 } |
|
1007 #endif |
|
1008 face->charmap = cur[0]; |
|
1009 return FT_Err_Ok; |
|
1010 } |
|
1011 } |
|
1012 } |
|
1013 |
|
1014 /* We do not have any UCS-4 charmap. */ |
|
1015 /* Do the loop again and search for UCS-2 charmaps. */ |
|
1016 cur = first + face->num_charmaps; |
|
1017 |
|
1018 for ( ; --cur >= first; ) |
|
1019 { |
|
1020 if ( cur[0]->encoding == FT_ENCODING_UNICODE ) |
|
1021 { |
|
1022 #ifdef FT_MAX_CHARMAP_CACHEABLE |
|
1023 if ( cur - first > FT_MAX_CHARMAP_CACHEABLE ) |
|
1024 { |
|
1025 FT_ERROR(( "find_unicode_charmap: UCS-2 cmap is found " |
|
1026 "at too late position (%d)\n", cur - first )); |
|
1027 continue; |
|
1028 } |
|
1029 #endif |
|
1030 face->charmap = cur[0]; |
|
1031 return FT_Err_Ok; |
|
1032 } |
|
1033 } |
|
1034 |
|
1035 return FT_Err_Invalid_CharMap_Handle; |
|
1036 } |
|
1037 |
|
1038 |
|
1039 /*************************************************************************/ |
|
1040 /* */ |
|
1041 /* <Function> */ |
|
1042 /* find_variant_selector_charmap */ |
|
1043 /* */ |
|
1044 /* <Description> */ |
|
1045 /* This function finds the variant selector charmap, if there is one. */ |
|
1046 /* There can only be one (platform=0, specific=5, format=14). */ |
|
1047 /* */ |
|
1048 static FT_CharMap |
|
1049 find_variant_selector_charmap( FT_Face face ) |
|
1050 { |
|
1051 FT_CharMap* first; |
|
1052 FT_CharMap* end; |
|
1053 FT_CharMap* cur; |
|
1054 |
|
1055 |
|
1056 /* caller should have already checked that `face' is valid */ |
|
1057 FT_ASSERT( face ); |
|
1058 |
|
1059 first = face->charmaps; |
|
1060 |
|
1061 if ( !first ) |
|
1062 return NULL; |
|
1063 |
|
1064 end = first + face->num_charmaps; /* points after the last one */ |
|
1065 |
|
1066 for ( cur = first; cur < end; ++cur ) |
|
1067 { |
|
1068 if ( cur[0]->platform_id == TT_PLATFORM_APPLE_UNICODE && |
|
1069 cur[0]->encoding_id == TT_APPLE_ID_VARIANT_SELECTOR && |
|
1070 FT_Get_CMap_Format( cur[0] ) == 14 ) |
|
1071 { |
|
1072 #ifdef FT_MAX_CHARMAP_CACHEABLE |
|
1073 if ( cur - first > FT_MAX_CHARMAP_CACHEABLE ) |
|
1074 { |
|
1075 FT_ERROR(( "find_unicode_charmap: UVS cmap is found " |
|
1076 "at too late position (%d)\n", cur - first )); |
|
1077 continue; |
|
1078 } |
|
1079 #endif |
|
1080 return cur[0]; |
|
1081 } |
|
1082 } |
|
1083 |
|
1084 return NULL; |
|
1085 } |
|
1086 |
|
1087 |
|
1088 /*************************************************************************/ |
|
1089 /* */ |
|
1090 /* <Function> */ |
|
1091 /* open_face */ |
|
1092 /* */ |
|
1093 /* <Description> */ |
|
1094 /* This function does some work for FT_Open_Face(). */ |
|
1095 /* */ |
|
1096 static FT_Error |
|
1097 open_face( FT_Driver driver, |
|
1098 FT_Stream stream, |
|
1099 FT_Long face_index, |
|
1100 FT_Int num_params, |
|
1101 FT_Parameter* params, |
|
1102 FT_Face *aface ) |
|
1103 { |
|
1104 FT_Memory memory; |
|
1105 FT_Driver_Class clazz; |
|
1106 FT_Face face = 0; |
|
1107 FT_Error error, error2; |
|
1108 FT_Face_Internal internal = NULL; |
|
1109 |
|
1110 |
|
1111 clazz = driver->clazz; |
|
1112 memory = driver->root.memory; |
|
1113 |
|
1114 /* allocate the face object and perform basic initialization */ |
|
1115 if ( FT_ALLOC( face, clazz->face_object_size ) ) |
|
1116 goto Fail; |
|
1117 |
|
1118 if ( FT_NEW( internal ) ) |
|
1119 goto Fail; |
|
1120 |
|
1121 face->internal = internal; |
|
1122 |
|
1123 face->driver = driver; |
|
1124 face->memory = memory; |
|
1125 face->stream = stream; |
|
1126 |
|
1127 #ifdef FT_CONFIG_OPTION_INCREMENTAL |
|
1128 { |
|
1129 int i; |
|
1130 |
|
1131 |
|
1132 face->internal->incremental_interface = 0; |
|
1133 for ( i = 0; i < num_params && !face->internal->incremental_interface; |
|
1134 i++ ) |
|
1135 if ( params[i].tag == FT_PARAM_TAG_INCREMENTAL ) |
|
1136 face->internal->incremental_interface = |
|
1137 (FT_Incremental_Interface)params[i].data; |
|
1138 } |
|
1139 #endif |
|
1140 |
|
1141 if ( clazz->init_face ) |
|
1142 error = clazz->init_face( stream, |
|
1143 face, |
|
1144 (FT_Int)face_index, |
|
1145 num_params, |
|
1146 params ); |
|
1147 if ( error ) |
|
1148 goto Fail; |
|
1149 |
|
1150 /* select Unicode charmap by default */ |
|
1151 error2 = find_unicode_charmap( face ); |
|
1152 |
|
1153 /* if no Unicode charmap can be found, FT_Err_Invalid_CharMap_Handle */ |
|
1154 /* is returned. */ |
|
1155 |
|
1156 /* no error should happen, but we want to play safe */ |
|
1157 if ( error2 && error2 != FT_Err_Invalid_CharMap_Handle ) |
|
1158 { |
|
1159 error = error2; |
|
1160 goto Fail; |
|
1161 } |
|
1162 |
|
1163 *aface = face; |
|
1164 |
|
1165 Fail: |
|
1166 if ( error ) |
|
1167 { |
|
1168 destroy_charmaps( face, memory ); |
|
1169 if ( clazz->done_face ) |
|
1170 clazz->done_face( face ); |
|
1171 FT_FREE( internal ); |
|
1172 FT_FREE( face ); |
|
1173 *aface = 0; |
|
1174 } |
|
1175 |
|
1176 return error; |
|
1177 } |
|
1178 |
|
1179 |
|
1180 /* there's a Mac-specific extended implementation of FT_New_Face() */ |
|
1181 /* in src/base/ftmac.c */ |
|
1182 |
|
1183 #if !defined( FT_MACINTOSH ) || defined( DARWIN_NO_CARBON ) |
|
1184 |
|
1185 /* documentation is in freetype.h */ |
|
1186 |
|
1187 FT_EXPORT_DEF( FT_Error ) |
|
1188 FT_New_Face( FT_Library library, |
|
1189 const char* pathname, |
|
1190 FT_Long face_index, |
|
1191 FT_Face *aface ) |
|
1192 { |
|
1193 FT_Open_Args args; |
|
1194 |
|
1195 |
|
1196 /* test for valid `library' and `aface' delayed to FT_Open_Face() */ |
|
1197 if ( !pathname ) |
|
1198 return FT_Err_Invalid_Argument; |
|
1199 |
|
1200 args.flags = FT_OPEN_PATHNAME; |
|
1201 args.pathname = (char*)pathname; |
|
1202 args.stream = NULL; |
|
1203 |
|
1204 return FT_Open_Face( library, &args, face_index, aface ); |
|
1205 } |
|
1206 |
|
1207 #endif /* defined( FT_MACINTOSH ) && !defined( DARWIN_NO_CARBON ) */ |
|
1208 |
|
1209 |
|
1210 /* documentation is in freetype.h */ |
|
1211 |
|
1212 FT_EXPORT_DEF( FT_Error ) |
|
1213 FT_New_Memory_Face( FT_Library library, |
|
1214 const FT_Byte* file_base, |
|
1215 FT_Long file_size, |
|
1216 FT_Long face_index, |
|
1217 FT_Face *aface ) |
|
1218 { |
|
1219 FT_Open_Args args; |
|
1220 |
|
1221 |
|
1222 /* test for valid `library' and `face' delayed to FT_Open_Face() */ |
|
1223 if ( !file_base ) |
|
1224 return FT_Err_Invalid_Argument; |
|
1225 |
|
1226 args.flags = FT_OPEN_MEMORY; |
|
1227 args.memory_base = file_base; |
|
1228 args.memory_size = file_size; |
|
1229 args.stream = NULL; |
|
1230 |
|
1231 return FT_Open_Face( library, &args, face_index, aface ); |
|
1232 } |
|
1233 |
|
1234 |
|
1235 #ifdef FT_CONFIG_OPTION_MAC_FONTS |
|
1236 |
|
1237 /* The behavior here is very similar to that in base/ftmac.c, but it */ |
|
1238 /* is designed to work on non-mac systems, so no mac specific calls. */ |
|
1239 /* */ |
|
1240 /* We look at the file and determine if it is a mac dfont file or a mac */ |
|
1241 /* resource file, or a macbinary file containing a mac resource file. */ |
|
1242 /* */ |
|
1243 /* Unlike ftmac I'm not going to look at a `FOND'. I don't really see */ |
|
1244 /* the point, especially since there may be multiple `FOND' resources. */ |
|
1245 /* Instead I'll just look for `sfnt' and `POST' resources, ordered as */ |
|
1246 /* they occur in the file. */ |
|
1247 /* */ |
|
1248 /* Note that multiple `POST' resources do not mean multiple postscript */ |
|
1249 /* fonts; they all get jammed together to make what is essentially a */ |
|
1250 /* pfb file. */ |
|
1251 /* */ |
|
1252 /* We aren't interested in `NFNT' or `FONT' bitmap resources. */ |
|
1253 /* */ |
|
1254 /* As soon as we get an `sfnt' load it into memory and pass it off to */ |
|
1255 /* FT_Open_Face. */ |
|
1256 /* */ |
|
1257 /* If we have a (set of) `POST' resources, massage them into a (memory) */ |
|
1258 /* pfb file and pass that to FT_Open_Face. (As with ftmac.c I'm not */ |
|
1259 /* going to try to save the kerning info. After all that lives in the */ |
|
1260 /* `FOND' which isn't in the file containing the `POST' resources so */ |
|
1261 /* we don't really have access to it. */ |
|
1262 |
|
1263 |
|
1264 /* Finalizer for a memory stream; gets called by FT_Done_Face(). */ |
|
1265 /* It frees the memory it uses. */ |
|
1266 /* From ftmac.c. */ |
|
1267 static void |
|
1268 memory_stream_close( FT_Stream stream ) |
|
1269 { |
|
1270 FT_Memory memory = stream->memory; |
|
1271 |
|
1272 |
|
1273 FT_FREE( stream->base ); |
|
1274 |
|
1275 stream->size = 0; |
|
1276 stream->base = 0; |
|
1277 stream->close = 0; |
|
1278 } |
|
1279 |
|
1280 |
|
1281 /* Create a new memory stream from a buffer and a size. */ |
|
1282 /* From ftmac.c. */ |
|
1283 static FT_Error |
|
1284 new_memory_stream( FT_Library library, |
|
1285 FT_Byte* base, |
|
1286 FT_ULong size, |
|
1287 FT_Stream_CloseFunc close, |
|
1288 FT_Stream *astream ) |
|
1289 { |
|
1290 FT_Error error; |
|
1291 FT_Memory memory; |
|
1292 FT_Stream stream; |
|
1293 |
|
1294 |
|
1295 if ( !library ) |
|
1296 return FT_Err_Invalid_Library_Handle; |
|
1297 |
|
1298 if ( !base ) |
|
1299 return FT_Err_Invalid_Argument; |
|
1300 |
|
1301 *astream = 0; |
|
1302 memory = library->memory; |
|
1303 if ( FT_NEW( stream ) ) |
|
1304 goto Exit; |
|
1305 |
|
1306 FT_Stream_OpenMemory( stream, base, size ); |
|
1307 |
|
1308 stream->close = close; |
|
1309 |
|
1310 *astream = stream; |
|
1311 |
|
1312 Exit: |
|
1313 return error; |
|
1314 } |
|
1315 |
|
1316 |
|
1317 /* Create a new FT_Face given a buffer and a driver name. */ |
|
1318 /* from ftmac.c */ |
|
1319 FT_LOCAL_DEF( FT_Error ) |
|
1320 open_face_from_buffer( FT_Library library, |
|
1321 FT_Byte* base, |
|
1322 FT_ULong size, |
|
1323 FT_Long face_index, |
|
1324 const char* driver_name, |
|
1325 FT_Face *aface ) |
|
1326 { |
|
1327 FT_Open_Args args; |
|
1328 FT_Error error; |
|
1329 FT_Stream stream = NULL; |
|
1330 FT_Memory memory = library->memory; |
|
1331 |
|
1332 |
|
1333 error = new_memory_stream( library, |
|
1334 base, |
|
1335 size, |
|
1336 memory_stream_close, |
|
1337 &stream ); |
|
1338 if ( error ) |
|
1339 { |
|
1340 FT_FREE( base ); |
|
1341 return error; |
|
1342 } |
|
1343 |
|
1344 args.flags = FT_OPEN_STREAM; |
|
1345 args.stream = stream; |
|
1346 if ( driver_name ) |
|
1347 { |
|
1348 args.flags = args.flags | FT_OPEN_DRIVER; |
|
1349 args.driver = FT_Get_Module( library, driver_name ); |
|
1350 } |
|
1351 |
|
1352 #ifdef FT_MACINTOSH |
|
1353 /* At this point, face_index has served its purpose; */ |
|
1354 /* whoever calls this function has already used it to */ |
|
1355 /* locate the correct font data. We should not propagate */ |
|
1356 /* this index to FT_Open_Face() (unless it is negative). */ |
|
1357 |
|
1358 if ( face_index > 0 ) |
|
1359 face_index = 0; |
|
1360 #endif |
|
1361 |
|
1362 error = FT_Open_Face( library, &args, face_index, aface ); |
|
1363 |
|
1364 if ( error == FT_Err_Ok ) |
|
1365 (*aface)->face_flags &= ~FT_FACE_FLAG_EXTERNAL_STREAM; |
|
1366 else |
|
1367 #ifdef FT_MACINTOSH |
|
1368 FT_Stream_Free( stream, 0 ); |
|
1369 #else |
|
1370 { |
|
1371 FT_Stream_Close( stream ); |
|
1372 FT_FREE( stream ); |
|
1373 } |
|
1374 #endif |
|
1375 |
|
1376 return error; |
|
1377 } |
|
1378 |
|
1379 |
|
1380 /* Look up `TYP1' or `CID ' table from sfnt table directory. */ |
|
1381 /* `offset' and `length' must exclude the binary header in tables. */ |
|
1382 |
|
1383 /* Type 1 and CID-keyed font drivers should recognize sfnt-wrapped */ |
|
1384 /* format too. Here, since we can't expect that the TrueType font */ |
|
1385 /* driver is loaded unconditially, we must parse the font by */ |
|
1386 /* ourselves. We are only interested in the name of the table and */ |
|
1387 /* the offset. */ |
|
1388 |
|
1389 static FT_Error |
|
1390 ft_lookup_PS_in_sfnt_stream( FT_Stream stream, |
|
1391 FT_Long face_index, |
|
1392 FT_ULong* offset, |
|
1393 FT_ULong* length, |
|
1394 FT_Bool* is_sfnt_cid ) |
|
1395 { |
|
1396 FT_Error error; |
|
1397 FT_UShort numTables; |
|
1398 FT_Long pstable_index; |
|
1399 FT_ULong tag; |
|
1400 int i; |
|
1401 |
|
1402 |
|
1403 *offset = 0; |
|
1404 *length = 0; |
|
1405 *is_sfnt_cid = FALSE; |
|
1406 |
|
1407 /* TODO: support for sfnt-wrapped PS/CID in TTC format */ |
|
1408 |
|
1409 /* version check for 'typ1' (should be ignored?) */ |
|
1410 if ( FT_READ_ULONG( tag ) ) |
|
1411 return error; |
|
1412 if ( tag != TTAG_typ1 ) |
|
1413 return FT_Err_Unknown_File_Format; |
|
1414 |
|
1415 if ( FT_READ_USHORT( numTables ) ) |
|
1416 return error; |
|
1417 if ( FT_STREAM_SKIP( 2 * 3 ) ) /* skip binary search header */ |
|
1418 return error; |
|
1419 |
|
1420 pstable_index = -1; |
|
1421 *is_sfnt_cid = FALSE; |
|
1422 |
|
1423 for ( i = 0; i < numTables; i++ ) |
|
1424 { |
|
1425 if ( FT_READ_ULONG( tag ) || FT_STREAM_SKIP( 4 ) || |
|
1426 FT_READ_ULONG( *offset ) || FT_READ_ULONG( *length ) ) |
|
1427 return error; |
|
1428 |
|
1429 if ( tag == TTAG_CID ) |
|
1430 { |
|
1431 pstable_index++; |
|
1432 *offset += 22; |
|
1433 *length -= 22; |
|
1434 *is_sfnt_cid = TRUE; |
|
1435 if ( face_index < 0 ) |
|
1436 return FT_Err_Ok; |
|
1437 } |
|
1438 else if ( tag == TTAG_TYP1 ) |
|
1439 { |
|
1440 pstable_index++; |
|
1441 *offset += 24; |
|
1442 *length -= 24; |
|
1443 *is_sfnt_cid = FALSE; |
|
1444 if ( face_index < 0 ) |
|
1445 return FT_Err_Ok; |
|
1446 } |
|
1447 if ( face_index >= 0 && pstable_index == face_index ) |
|
1448 return FT_Err_Ok; |
|
1449 } |
|
1450 return FT_Err_Table_Missing; |
|
1451 } |
|
1452 |
|
1453 |
|
1454 FT_LOCAL_DEF( FT_Error ) |
|
1455 open_face_PS_from_sfnt_stream( FT_Library library, |
|
1456 FT_Stream stream, |
|
1457 FT_Long face_index, |
|
1458 FT_Int num_params, |
|
1459 FT_Parameter *params, |
|
1460 FT_Face *aface ) |
|
1461 { |
|
1462 FT_Error error; |
|
1463 FT_Memory memory = library->memory; |
|
1464 FT_ULong offset, length; |
|
1465 FT_Long pos; |
|
1466 FT_Bool is_sfnt_cid; |
|
1467 FT_Byte* sfnt_ps; |
|
1468 |
|
1469 FT_UNUSED( num_params ); |
|
1470 FT_UNUSED( params ); |
|
1471 |
|
1472 |
|
1473 pos = FT_Stream_Pos( stream ); |
|
1474 |
|
1475 error = ft_lookup_PS_in_sfnt_stream( stream, |
|
1476 face_index, |
|
1477 &offset, |
|
1478 &length, |
|
1479 &is_sfnt_cid ); |
|
1480 if ( error ) |
|
1481 goto Exit; |
|
1482 |
|
1483 if ( FT_Stream_Seek( stream, pos + offset ) ) |
|
1484 goto Exit; |
|
1485 |
|
1486 if ( FT_ALLOC( sfnt_ps, (FT_Long)length ) ) |
|
1487 goto Exit; |
|
1488 |
|
1489 error = FT_Stream_Read( stream, (FT_Byte *)sfnt_ps, length ); |
|
1490 if ( error ) |
|
1491 goto Exit; |
|
1492 |
|
1493 error = open_face_from_buffer( library, |
|
1494 sfnt_ps, |
|
1495 length, |
|
1496 face_index < 0 ? face_index : 0, |
|
1497 is_sfnt_cid ? "cid" : "type1", |
|
1498 aface ); |
|
1499 Exit: |
|
1500 { |
|
1501 FT_Error error1; |
|
1502 |
|
1503 |
|
1504 if ( error == FT_Err_Unknown_File_Format ) |
|
1505 { |
|
1506 error1 = FT_Stream_Seek( stream, pos ); |
|
1507 if ( error1 ) |
|
1508 return error1; |
|
1509 } |
|
1510 |
|
1511 return error; |
|
1512 } |
|
1513 } |
|
1514 |
|
1515 |
|
1516 #if !defined( FT_MACINTOSH ) || defined( DARWIN_NO_CARBON ) |
|
1517 |
|
1518 /* The resource header says we've got resource_cnt `POST' (type1) */ |
|
1519 /* resources in this file. They all need to be coalesced into */ |
|
1520 /* one lump which gets passed on to the type1 driver. */ |
|
1521 /* Here can be only one PostScript font in a file so face_index */ |
|
1522 /* must be 0 (or -1). */ |
|
1523 /* */ |
|
1524 static FT_Error |
|
1525 Mac_Read_POST_Resource( FT_Library library, |
|
1526 FT_Stream stream, |
|
1527 FT_Long *offsets, |
|
1528 FT_Long resource_cnt, |
|
1529 FT_Long face_index, |
|
1530 FT_Face *aface ) |
|
1531 { |
|
1532 FT_Error error = FT_Err_Cannot_Open_Resource; |
|
1533 FT_Memory memory = library->memory; |
|
1534 FT_Byte* pfb_data; |
|
1535 int i, type, flags; |
|
1536 FT_Long len; |
|
1537 FT_Long pfb_len, pfb_pos, pfb_lenpos; |
|
1538 FT_Long rlen, temp; |
|
1539 |
|
1540 |
|
1541 if ( face_index == -1 ) |
|
1542 face_index = 0; |
|
1543 if ( face_index != 0 ) |
|
1544 return error; |
|
1545 |
|
1546 /* Find the length of all the POST resources, concatenated. Assume */ |
|
1547 /* worst case (each resource in its own section). */ |
|
1548 pfb_len = 0; |
|
1549 for ( i = 0; i < resource_cnt; ++i ) |
|
1550 { |
|
1551 error = FT_Stream_Seek( stream, offsets[i] ); |
|
1552 if ( error ) |
|
1553 goto Exit; |
|
1554 if ( FT_READ_LONG( temp ) ) |
|
1555 goto Exit; |
|
1556 pfb_len += temp + 6; |
|
1557 } |
|
1558 |
|
1559 if ( FT_ALLOC( pfb_data, (FT_Long)pfb_len + 2 ) ) |
|
1560 goto Exit; |
|
1561 |
|
1562 pfb_data[0] = 0x80; |
|
1563 pfb_data[1] = 1; /* Ascii section */ |
|
1564 pfb_data[2] = 0; /* 4-byte length, fill in later */ |
|
1565 pfb_data[3] = 0; |
|
1566 pfb_data[4] = 0; |
|
1567 pfb_data[5] = 0; |
|
1568 pfb_pos = 6; |
|
1569 pfb_lenpos = 2; |
|
1570 |
|
1571 len = 0; |
|
1572 type = 1; |
|
1573 for ( i = 0; i < resource_cnt; ++i ) |
|
1574 { |
|
1575 error = FT_Stream_Seek( stream, offsets[i] ); |
|
1576 if ( error ) |
|
1577 goto Exit2; |
|
1578 if ( FT_READ_LONG( rlen ) ) |
|
1579 goto Exit; |
|
1580 if ( FT_READ_USHORT( flags ) ) |
|
1581 goto Exit; |
|
1582 FT_TRACE3(( "POST fragment[%d]: offsets=0x%08x, rlen=0x%08x, flags=0x%04x\n", |
|
1583 i, offsets[i], rlen, flags )); |
|
1584 |
|
1585 /* postpone the check of rlen longer than buffer until FT_Stream_Read() */ |
|
1586 if ( ( flags >> 8 ) == 0 ) /* Comment, should not be loaded */ |
|
1587 continue; |
|
1588 |
|
1589 /* the flags are part of the resource, so rlen >= 2. */ |
|
1590 /* but some fonts declare rlen = 0 for empty fragment */ |
|
1591 if ( rlen > 2 ) |
|
1592 rlen -= 2; |
|
1593 else |
|
1594 rlen = 0; |
|
1595 |
|
1596 if ( ( flags >> 8 ) == type ) |
|
1597 len += rlen; |
|
1598 else |
|
1599 { |
|
1600 if ( pfb_lenpos + 3 > pfb_len + 2 ) |
|
1601 goto Exit2; |
|
1602 pfb_data[pfb_lenpos ] = (FT_Byte)( len ); |
|
1603 pfb_data[pfb_lenpos + 1] = (FT_Byte)( len >> 8 ); |
|
1604 pfb_data[pfb_lenpos + 2] = (FT_Byte)( len >> 16 ); |
|
1605 pfb_data[pfb_lenpos + 3] = (FT_Byte)( len >> 24 ); |
|
1606 |
|
1607 if ( ( flags >> 8 ) == 5 ) /* End of font mark */ |
|
1608 break; |
|
1609 |
|
1610 if ( pfb_pos + 6 > pfb_len + 2 ) |
|
1611 goto Exit2; |
|
1612 pfb_data[pfb_pos++] = 0x80; |
|
1613 |
|
1614 type = flags >> 8; |
|
1615 len = rlen; |
|
1616 |
|
1617 pfb_data[pfb_pos++] = (FT_Byte)type; |
|
1618 pfb_lenpos = pfb_pos; |
|
1619 pfb_data[pfb_pos++] = 0; /* 4-byte length, fill in later */ |
|
1620 pfb_data[pfb_pos++] = 0; |
|
1621 pfb_data[pfb_pos++] = 0; |
|
1622 pfb_data[pfb_pos++] = 0; |
|
1623 } |
|
1624 |
|
1625 error = FT_Err_Cannot_Open_Resource; |
|
1626 if ( pfb_pos > pfb_len || pfb_pos + rlen > pfb_len ) |
|
1627 goto Exit2; |
|
1628 |
|
1629 error = FT_Stream_Read( stream, (FT_Byte *)pfb_data + pfb_pos, rlen ); |
|
1630 if ( error ) |
|
1631 goto Exit2; |
|
1632 pfb_pos += rlen; |
|
1633 } |
|
1634 |
|
1635 if ( pfb_pos + 2 > pfb_len + 2 ) |
|
1636 goto Exit2; |
|
1637 pfb_data[pfb_pos++] = 0x80; |
|
1638 pfb_data[pfb_pos++] = 3; |
|
1639 |
|
1640 if ( pfb_lenpos + 3 > pfb_len + 2 ) |
|
1641 goto Exit2; |
|
1642 pfb_data[pfb_lenpos ] = (FT_Byte)( len ); |
|
1643 pfb_data[pfb_lenpos + 1] = (FT_Byte)( len >> 8 ); |
|
1644 pfb_data[pfb_lenpos + 2] = (FT_Byte)( len >> 16 ); |
|
1645 pfb_data[pfb_lenpos + 3] = (FT_Byte)( len >> 24 ); |
|
1646 |
|
1647 return open_face_from_buffer( library, |
|
1648 pfb_data, |
|
1649 pfb_pos, |
|
1650 face_index, |
|
1651 "type1", |
|
1652 aface ); |
|
1653 |
|
1654 Exit2: |
|
1655 FT_FREE( pfb_data ); |
|
1656 |
|
1657 Exit: |
|
1658 return error; |
|
1659 } |
|
1660 |
|
1661 |
|
1662 /* The resource header says we've got resource_cnt `sfnt' */ |
|
1663 /* (TrueType/OpenType) resources in this file. Look through */ |
|
1664 /* them for the one indicated by face_index, load it into mem, */ |
|
1665 /* pass it on the the truetype driver and return it. */ |
|
1666 /* */ |
|
1667 static FT_Error |
|
1668 Mac_Read_sfnt_Resource( FT_Library library, |
|
1669 FT_Stream stream, |
|
1670 FT_Long *offsets, |
|
1671 FT_Long resource_cnt, |
|
1672 FT_Long face_index, |
|
1673 FT_Face *aface ) |
|
1674 { |
|
1675 FT_Memory memory = library->memory; |
|
1676 FT_Byte* sfnt_data; |
|
1677 FT_Error error; |
|
1678 FT_Long flag_offset; |
|
1679 FT_Long rlen; |
|
1680 int is_cff; |
|
1681 FT_Long face_index_in_resource = 0; |
|
1682 |
|
1683 |
|
1684 if ( face_index == -1 ) |
|
1685 face_index = 0; |
|
1686 if ( face_index >= resource_cnt ) |
|
1687 return FT_Err_Cannot_Open_Resource; |
|
1688 |
|
1689 flag_offset = offsets[face_index]; |
|
1690 error = FT_Stream_Seek( stream, flag_offset ); |
|
1691 if ( error ) |
|
1692 goto Exit; |
|
1693 |
|
1694 if ( FT_READ_LONG( rlen ) ) |
|
1695 goto Exit; |
|
1696 if ( rlen == -1 ) |
|
1697 return FT_Err_Cannot_Open_Resource; |
|
1698 |
|
1699 error = open_face_PS_from_sfnt_stream( library, |
|
1700 stream, |
|
1701 face_index, |
|
1702 0, NULL, |
|
1703 aface ); |
|
1704 if ( !error ) |
|
1705 goto Exit; |
|
1706 |
|
1707 /* rewind sfnt stream before open_face_PS_from_sfnt_stream() */ |
|
1708 if ( FT_Stream_Seek( stream, flag_offset + 4 ) ) |
|
1709 goto Exit; |
|
1710 |
|
1711 if ( FT_ALLOC( sfnt_data, (FT_Long)rlen ) ) |
|
1712 return error; |
|
1713 error = FT_Stream_Read( stream, (FT_Byte *)sfnt_data, rlen ); |
|
1714 if ( error ) |
|
1715 goto Exit; |
|
1716 |
|
1717 is_cff = rlen > 4 && !ft_memcmp( sfnt_data, "OTTO", 4 ); |
|
1718 error = open_face_from_buffer( library, |
|
1719 sfnt_data, |
|
1720 rlen, |
|
1721 face_index_in_resource, |
|
1722 is_cff ? "cff" : "truetype", |
|
1723 aface ); |
|
1724 |
|
1725 Exit: |
|
1726 return error; |
|
1727 } |
|
1728 |
|
1729 |
|
1730 /* Check for a valid resource fork header, or a valid dfont */ |
|
1731 /* header. In a resource fork the first 16 bytes are repeated */ |
|
1732 /* at the location specified by bytes 4-7. In a dfont bytes */ |
|
1733 /* 4-7 point to 16 bytes of zeroes instead. */ |
|
1734 /* */ |
|
1735 static FT_Error |
|
1736 IsMacResource( FT_Library library, |
|
1737 FT_Stream stream, |
|
1738 FT_Long resource_offset, |
|
1739 FT_Long face_index, |
|
1740 FT_Face *aface ) |
|
1741 { |
|
1742 FT_Memory memory = library->memory; |
|
1743 FT_Error error; |
|
1744 FT_Long map_offset, rdara_pos; |
|
1745 FT_Long *data_offsets; |
|
1746 FT_Long count; |
|
1747 |
|
1748 |
|
1749 error = FT_Raccess_Get_HeaderInfo( library, stream, resource_offset, |
|
1750 &map_offset, &rdara_pos ); |
|
1751 if ( error ) |
|
1752 return error; |
|
1753 |
|
1754 error = FT_Raccess_Get_DataOffsets( library, stream, |
|
1755 map_offset, rdara_pos, |
|
1756 TTAG_POST, |
|
1757 &data_offsets, &count ); |
|
1758 if ( !error ) |
|
1759 { |
|
1760 error = Mac_Read_POST_Resource( library, stream, data_offsets, count, |
|
1761 face_index, aface ); |
|
1762 FT_FREE( data_offsets ); |
|
1763 /* POST exists in an LWFN providing a single face */ |
|
1764 if ( !error ) |
|
1765 (*aface)->num_faces = 1; |
|
1766 return error; |
|
1767 } |
|
1768 |
|
1769 error = FT_Raccess_Get_DataOffsets( library, stream, |
|
1770 map_offset, rdara_pos, |
|
1771 TTAG_sfnt, |
|
1772 &data_offsets, &count ); |
|
1773 if ( !error ) |
|
1774 { |
|
1775 FT_Long face_index_internal = face_index % count; |
|
1776 |
|
1777 |
|
1778 error = Mac_Read_sfnt_Resource( library, stream, data_offsets, count, |
|
1779 face_index_internal, aface ); |
|
1780 FT_FREE( data_offsets ); |
|
1781 if ( !error ) |
|
1782 (*aface)->num_faces = count; |
|
1783 } |
|
1784 |
|
1785 return error; |
|
1786 } |
|
1787 |
|
1788 |
|
1789 /* Check for a valid macbinary header, and if we find one */ |
|
1790 /* check that the (flattened) resource fork in it is valid. */ |
|
1791 /* */ |
|
1792 static FT_Error |
|
1793 IsMacBinary( FT_Library library, |
|
1794 FT_Stream stream, |
|
1795 FT_Long face_index, |
|
1796 FT_Face *aface ) |
|
1797 { |
|
1798 unsigned char header[128]; |
|
1799 FT_Error error; |
|
1800 FT_Long dlen, offset; |
|
1801 |
|
1802 |
|
1803 if ( NULL == stream ) |
|
1804 return FT_Err_Invalid_Stream_Operation; |
|
1805 |
|
1806 error = FT_Stream_Seek( stream, 0 ); |
|
1807 if ( error ) |
|
1808 goto Exit; |
|
1809 |
|
1810 error = FT_Stream_Read( stream, (FT_Byte*)header, 128 ); |
|
1811 if ( error ) |
|
1812 goto Exit; |
|
1813 |
|
1814 if ( header[ 0] != 0 || |
|
1815 header[74] != 0 || |
|
1816 header[82] != 0 || |
|
1817 header[ 1] == 0 || |
|
1818 header[ 1] > 33 || |
|
1819 header[63] != 0 || |
|
1820 header[2 + header[1]] != 0 ) |
|
1821 return FT_Err_Unknown_File_Format; |
|
1822 |
|
1823 dlen = ( header[0x53] << 24 ) | |
|
1824 ( header[0x54] << 16 ) | |
|
1825 ( header[0x55] << 8 ) | |
|
1826 header[0x56]; |
|
1827 #if 0 |
|
1828 rlen = ( header[0x57] << 24 ) | |
|
1829 ( header[0x58] << 16 ) | |
|
1830 ( header[0x59] << 8 ) | |
|
1831 header[0x5a]; |
|
1832 #endif /* 0 */ |
|
1833 offset = 128 + ( ( dlen + 127 ) & ~127 ); |
|
1834 |
|
1835 return IsMacResource( library, stream, offset, face_index, aface ); |
|
1836 |
|
1837 Exit: |
|
1838 return error; |
|
1839 } |
|
1840 |
|
1841 |
|
1842 static FT_Error |
|
1843 load_face_in_embedded_rfork( FT_Library library, |
|
1844 FT_Stream stream, |
|
1845 FT_Long face_index, |
|
1846 FT_Face *aface, |
|
1847 const FT_Open_Args *args ) |
|
1848 { |
|
1849 |
|
1850 #undef FT_COMPONENT |
|
1851 #define FT_COMPONENT trace_raccess |
|
1852 |
|
1853 FT_Memory memory = library->memory; |
|
1854 FT_Error error = FT_Err_Unknown_File_Format; |
|
1855 int i; |
|
1856 |
|
1857 char * file_names[FT_RACCESS_N_RULES]; |
|
1858 FT_Long offsets[FT_RACCESS_N_RULES]; |
|
1859 FT_Error errors[FT_RACCESS_N_RULES]; |
|
1860 FT_Bool is_darwin_vfs, vfs_rfork_has_no_font = FALSE; /* not tested */ |
|
1861 |
|
1862 FT_Open_Args args2; |
|
1863 FT_Stream stream2 = 0; |
|
1864 |
|
1865 |
|
1866 FT_Raccess_Guess( library, stream, |
|
1867 args->pathname, file_names, offsets, errors ); |
|
1868 |
|
1869 for ( i = 0; i < FT_RACCESS_N_RULES; i++ ) |
|
1870 { |
|
1871 is_darwin_vfs = raccess_rule_by_darwin_vfs( i ); |
|
1872 if ( is_darwin_vfs && vfs_rfork_has_no_font ) |
|
1873 { |
|
1874 FT_TRACE3(( "Skip rule %d: darwin vfs resource fork" |
|
1875 " is already checked and" |
|
1876 " no font is found\n", i )); |
|
1877 continue; |
|
1878 } |
|
1879 |
|
1880 if ( errors[i] ) |
|
1881 { |
|
1882 FT_TRACE3(( "Error[%d] has occurred in rule %d\n", errors[i], i )); |
|
1883 continue; |
|
1884 } |
|
1885 |
|
1886 args2.flags = FT_OPEN_PATHNAME; |
|
1887 args2.pathname = file_names[i] ? file_names[i] : args->pathname; |
|
1888 |
|
1889 FT_TRACE3(( "Try rule %d: %s (offset=%d) ...", |
|
1890 i, args2.pathname, offsets[i] )); |
|
1891 |
|
1892 error = FT_Stream_New( library, &args2, &stream2 ); |
|
1893 if ( is_darwin_vfs && error == FT_Err_Cannot_Open_Stream ) |
|
1894 vfs_rfork_has_no_font = TRUE; |
|
1895 |
|
1896 if ( error ) |
|
1897 { |
|
1898 FT_TRACE3(( "failed\n" )); |
|
1899 continue; |
|
1900 } |
|
1901 |
|
1902 error = IsMacResource( library, stream2, offsets[i], |
|
1903 face_index, aface ); |
|
1904 FT_Stream_Free( stream2, 0 ); |
|
1905 |
|
1906 FT_TRACE3(( "%s\n", error ? "failed": "successful" )); |
|
1907 |
|
1908 if ( !error ) |
|
1909 break; |
|
1910 else if ( is_darwin_vfs ) |
|
1911 vfs_rfork_has_no_font = TRUE; |
|
1912 } |
|
1913 |
|
1914 for (i = 0; i < FT_RACCESS_N_RULES; i++) |
|
1915 { |
|
1916 if ( file_names[i] ) |
|
1917 FT_FREE( file_names[i] ); |
|
1918 } |
|
1919 |
|
1920 /* Caller (load_mac_face) requires FT_Err_Unknown_File_Format. */ |
|
1921 if ( error ) |
|
1922 error = FT_Err_Unknown_File_Format; |
|
1923 |
|
1924 return error; |
|
1925 |
|
1926 #undef FT_COMPONENT |
|
1927 #define FT_COMPONENT trace_objs |
|
1928 |
|
1929 } |
|
1930 |
|
1931 |
|
1932 /* Check for some macintosh formats without Carbon framework. */ |
|
1933 /* Is this a macbinary file? If so look at the resource fork. */ |
|
1934 /* Is this a mac dfont file? */ |
|
1935 /* Is this an old style resource fork? (in data) */ |
|
1936 /* Else call load_face_in_embedded_rfork to try extra rules */ |
|
1937 /* (defined in `ftrfork.c'). */ |
|
1938 /* */ |
|
1939 static FT_Error |
|
1940 load_mac_face( FT_Library library, |
|
1941 FT_Stream stream, |
|
1942 FT_Long face_index, |
|
1943 FT_Face *aface, |
|
1944 const FT_Open_Args *args ) |
|
1945 { |
|
1946 FT_Error error; |
|
1947 FT_UNUSED( args ); |
|
1948 |
|
1949 |
|
1950 error = IsMacBinary( library, stream, face_index, aface ); |
|
1951 if ( FT_ERROR_BASE( error ) == FT_Err_Unknown_File_Format ) |
|
1952 { |
|
1953 |
|
1954 #undef FT_COMPONENT |
|
1955 #define FT_COMPONENT trace_raccess |
|
1956 |
|
1957 FT_TRACE3(( "Try as dfont: %s ...", args->pathname )); |
|
1958 |
|
1959 error = IsMacResource( library, stream, 0, face_index, aface ); |
|
1960 |
|
1961 FT_TRACE3(( "%s\n", error ? "failed" : "successful" )); |
|
1962 |
|
1963 #undef FT_COMPONENT |
|
1964 #define FT_COMPONENT trace_objs |
|
1965 |
|
1966 } |
|
1967 |
|
1968 if ( ( FT_ERROR_BASE( error ) == FT_Err_Unknown_File_Format || |
|
1969 FT_ERROR_BASE( error ) == FT_Err_Invalid_Stream_Operation ) && |
|
1970 ( args->flags & FT_OPEN_PATHNAME ) ) |
|
1971 error = load_face_in_embedded_rfork( library, stream, |
|
1972 face_index, aface, args ); |
|
1973 return error; |
|
1974 } |
|
1975 #endif |
|
1976 |
|
1977 #endif /* !FT_MACINTOSH && FT_CONFIG_OPTION_MAC_FONTS */ |
|
1978 |
|
1979 |
|
1980 /* documentation is in freetype.h */ |
|
1981 |
|
1982 FT_EXPORT_DEF( FT_Error ) |
|
1983 FT_Open_Face( FT_Library library, |
|
1984 const FT_Open_Args* args, |
|
1985 FT_Long face_index, |
|
1986 FT_Face *aface ) |
|
1987 { |
|
1988 FT_Error error; |
|
1989 FT_Driver driver; |
|
1990 FT_Memory memory; |
|
1991 FT_Stream stream = NULL; |
|
1992 FT_Face face = NULL; |
|
1993 FT_ListNode node = NULL; |
|
1994 FT_Bool external_stream; |
|
1995 FT_Module* cur; |
|
1996 FT_Module* limit; |
|
1997 |
|
1998 |
|
1999 /* test for valid `library' delayed to */ |
|
2000 /* FT_Stream_New() */ |
|
2001 |
|
2002 if ( ( !aface && face_index >= 0 ) || !args ) |
|
2003 return FT_Err_Invalid_Argument; |
|
2004 |
|
2005 external_stream = FT_BOOL( ( args->flags & FT_OPEN_STREAM ) && |
|
2006 args->stream ); |
|
2007 |
|
2008 /* create input stream */ |
|
2009 error = FT_Stream_New( library, args, &stream ); |
|
2010 if ( error ) |
|
2011 goto Fail3; |
|
2012 |
|
2013 memory = library->memory; |
|
2014 |
|
2015 /* If the font driver is specified in the `args' structure, use */ |
|
2016 /* it. Otherwise, we scan the list of registered drivers. */ |
|
2017 if ( ( args->flags & FT_OPEN_DRIVER ) && args->driver ) |
|
2018 { |
|
2019 driver = FT_DRIVER( args->driver ); |
|
2020 |
|
2021 /* not all modules are drivers, so check... */ |
|
2022 if ( FT_MODULE_IS_DRIVER( driver ) ) |
|
2023 { |
|
2024 FT_Int num_params = 0; |
|
2025 FT_Parameter* params = 0; |
|
2026 |
|
2027 |
|
2028 if ( args->flags & FT_OPEN_PARAMS ) |
|
2029 { |
|
2030 num_params = args->num_params; |
|
2031 params = args->params; |
|
2032 } |
|
2033 |
|
2034 error = open_face( driver, stream, face_index, |
|
2035 num_params, params, &face ); |
|
2036 if ( !error ) |
|
2037 goto Success; |
|
2038 } |
|
2039 else |
|
2040 error = FT_Err_Invalid_Handle; |
|
2041 |
|
2042 FT_Stream_Free( stream, external_stream ); |
|
2043 goto Fail; |
|
2044 } |
|
2045 else |
|
2046 { |
|
2047 /* check each font driver for an appropriate format */ |
|
2048 cur = library->modules; |
|
2049 limit = cur + library->num_modules; |
|
2050 |
|
2051 |
|
2052 for ( ; cur < limit; cur++ ) |
|
2053 { |
|
2054 /* not all modules are font drivers, so check... */ |
|
2055 if ( FT_MODULE_IS_DRIVER( cur[0] ) ) |
|
2056 { |
|
2057 FT_Int num_params = 0; |
|
2058 FT_Parameter* params = 0; |
|
2059 |
|
2060 |
|
2061 driver = FT_DRIVER( cur[0] ); |
|
2062 |
|
2063 if ( args->flags & FT_OPEN_PARAMS ) |
|
2064 { |
|
2065 num_params = args->num_params; |
|
2066 params = args->params; |
|
2067 } |
|
2068 |
|
2069 error = open_face( driver, stream, face_index, |
|
2070 num_params, params, &face ); |
|
2071 if ( !error ) |
|
2072 goto Success; |
|
2073 |
|
2074 #ifdef FT_CONFIG_OPTION_MAC_FONTS |
|
2075 if ( ft_strcmp( cur[0]->clazz->module_name, "truetype" ) == 0 && |
|
2076 FT_ERROR_BASE( error ) == FT_Err_Table_Missing ) |
|
2077 { |
|
2078 /* TrueType but essential tables are missing */ |
|
2079 if ( FT_Stream_Seek( stream, 0 ) ) |
|
2080 break; |
|
2081 |
|
2082 error = open_face_PS_from_sfnt_stream( library, |
|
2083 stream, |
|
2084 face_index, |
|
2085 num_params, |
|
2086 params, |
|
2087 aface ); |
|
2088 if ( !error ) |
|
2089 { |
|
2090 FT_Stream_Free( stream, external_stream ); |
|
2091 return error; |
|
2092 } |
|
2093 } |
|
2094 #endif |
|
2095 |
|
2096 if ( FT_ERROR_BASE( error ) != FT_Err_Unknown_File_Format ) |
|
2097 goto Fail3; |
|
2098 } |
|
2099 } |
|
2100 |
|
2101 Fail3: |
|
2102 /* If we are on the mac, and we get an FT_Err_Invalid_Stream_Operation */ |
|
2103 /* it may be because we have an empty data fork, so we need to check */ |
|
2104 /* the resource fork. */ |
|
2105 if ( FT_ERROR_BASE( error ) != FT_Err_Cannot_Open_Stream && |
|
2106 FT_ERROR_BASE( error ) != FT_Err_Unknown_File_Format && |
|
2107 FT_ERROR_BASE( error ) != FT_Err_Invalid_Stream_Operation ) |
|
2108 goto Fail2; |
|
2109 |
|
2110 #if !defined( FT_MACINTOSH ) && defined( FT_CONFIG_OPTION_MAC_FONTS ) |
|
2111 error = load_mac_face( library, stream, face_index, aface, args ); |
|
2112 if ( !error ) |
|
2113 { |
|
2114 /* We don't want to go to Success here. We've already done that. */ |
|
2115 /* On the other hand, if we succeeded we still need to close this */ |
|
2116 /* stream (we opened a different stream which extracted the */ |
|
2117 /* interesting information out of this stream here. That stream */ |
|
2118 /* will still be open and the face will point to it). */ |
|
2119 FT_Stream_Free( stream, external_stream ); |
|
2120 return error; |
|
2121 } |
|
2122 |
|
2123 if ( FT_ERROR_BASE( error ) != FT_Err_Unknown_File_Format ) |
|
2124 goto Fail2; |
|
2125 #endif /* !FT_MACINTOSH && FT_CONFIG_OPTION_MAC_FONTS */ |
|
2126 |
|
2127 /* no driver is able to handle this format */ |
|
2128 error = FT_Err_Unknown_File_Format; |
|
2129 |
|
2130 Fail2: |
|
2131 FT_Stream_Free( stream, external_stream ); |
|
2132 goto Fail; |
|
2133 } |
|
2134 |
|
2135 Success: |
|
2136 FT_TRACE4(( "FT_Open_Face: New face object, adding to list\n" )); |
|
2137 |
|
2138 /* set the FT_FACE_FLAG_EXTERNAL_STREAM bit for FT_Done_Face */ |
|
2139 if ( external_stream ) |
|
2140 face->face_flags |= FT_FACE_FLAG_EXTERNAL_STREAM; |
|
2141 |
|
2142 /* add the face object to its driver's list */ |
|
2143 if ( FT_NEW( node ) ) |
|
2144 goto Fail; |
|
2145 |
|
2146 node->data = face; |
|
2147 /* don't assume driver is the same as face->driver, so use */ |
|
2148 /* face->driver instead. */ |
|
2149 FT_List_Add( &face->driver->faces_list, node ); |
|
2150 |
|
2151 /* now allocate a glyph slot object for the face */ |
|
2152 FT_TRACE4(( "FT_Open_Face: Creating glyph slot\n" )); |
|
2153 |
|
2154 if ( face_index >= 0 ) |
|
2155 { |
|
2156 error = FT_New_GlyphSlot( face, NULL ); |
|
2157 if ( error ) |
|
2158 goto Fail; |
|
2159 |
|
2160 /* finally, allocate a size object for the face */ |
|
2161 { |
|
2162 FT_Size size; |
|
2163 |
|
2164 |
|
2165 FT_TRACE4(( "FT_Open_Face: Creating size object\n" )); |
|
2166 |
|
2167 error = FT_New_Size( face, &size ); |
|
2168 if ( error ) |
|
2169 goto Fail; |
|
2170 |
|
2171 face->size = size; |
|
2172 } |
|
2173 } |
|
2174 |
|
2175 /* some checks */ |
|
2176 |
|
2177 if ( FT_IS_SCALABLE( face ) ) |
|
2178 { |
|
2179 if ( face->height < 0 ) |
|
2180 face->height = (FT_Short)-face->height; |
|
2181 |
|
2182 if ( !FT_HAS_VERTICAL( face ) ) |
|
2183 face->max_advance_height = (FT_Short)face->height; |
|
2184 } |
|
2185 |
|
2186 if ( FT_HAS_FIXED_SIZES( face ) ) |
|
2187 { |
|
2188 FT_Int i; |
|
2189 |
|
2190 |
|
2191 for ( i = 0; i < face->num_fixed_sizes; i++ ) |
|
2192 { |
|
2193 FT_Bitmap_Size* bsize = face->available_sizes + i; |
|
2194 |
|
2195 |
|
2196 if ( bsize->height < 0 ) |
|
2197 bsize->height = (FT_Short)-bsize->height; |
|
2198 if ( bsize->x_ppem < 0 ) |
|
2199 bsize->x_ppem = (FT_Short)-bsize->x_ppem; |
|
2200 if ( bsize->y_ppem < 0 ) |
|
2201 bsize->y_ppem = -bsize->y_ppem; |
|
2202 } |
|
2203 } |
|
2204 |
|
2205 /* initialize internal face data */ |
|
2206 { |
|
2207 FT_Face_Internal internal = face->internal; |
|
2208 |
|
2209 |
|
2210 internal->transform_matrix.xx = 0x10000L; |
|
2211 internal->transform_matrix.xy = 0; |
|
2212 internal->transform_matrix.yx = 0; |
|
2213 internal->transform_matrix.yy = 0x10000L; |
|
2214 |
|
2215 internal->transform_delta.x = 0; |
|
2216 internal->transform_delta.y = 0; |
|
2217 |
|
2218 internal->refcount = 1; |
|
2219 } |
|
2220 |
|
2221 if ( aface ) |
|
2222 *aface = face; |
|
2223 else |
|
2224 FT_Done_Face( face ); |
|
2225 |
|
2226 goto Exit; |
|
2227 |
|
2228 Fail: |
|
2229 FT_Done_Face( face ); |
|
2230 |
|
2231 Exit: |
|
2232 FT_TRACE4(( "FT_Open_Face: Return %d\n", error )); |
|
2233 |
|
2234 return error; |
|
2235 } |
|
2236 |
|
2237 |
|
2238 /* documentation is in freetype.h */ |
|
2239 |
|
2240 FT_EXPORT_DEF( FT_Error ) |
|
2241 FT_Attach_File( FT_Face face, |
|
2242 const char* filepathname ) |
|
2243 { |
|
2244 FT_Open_Args open; |
|
2245 |
|
2246 |
|
2247 /* test for valid `face' delayed to FT_Attach_Stream() */ |
|
2248 |
|
2249 if ( !filepathname ) |
|
2250 return FT_Err_Invalid_Argument; |
|
2251 |
|
2252 open.stream = NULL; |
|
2253 open.flags = FT_OPEN_PATHNAME; |
|
2254 open.pathname = (char*)filepathname; |
|
2255 |
|
2256 return FT_Attach_Stream( face, &open ); |
|
2257 } |
|
2258 |
|
2259 |
|
2260 /* documentation is in freetype.h */ |
|
2261 |
|
2262 FT_EXPORT_DEF( FT_Error ) |
|
2263 FT_Attach_Stream( FT_Face face, |
|
2264 FT_Open_Args* parameters ) |
|
2265 { |
|
2266 FT_Stream stream; |
|
2267 FT_Error error; |
|
2268 FT_Driver driver; |
|
2269 |
|
2270 FT_Driver_Class clazz; |
|
2271 |
|
2272 |
|
2273 /* test for valid `parameters' delayed to FT_Stream_New() */ |
|
2274 |
|
2275 if ( !face ) |
|
2276 return FT_Err_Invalid_Face_Handle; |
|
2277 |
|
2278 driver = face->driver; |
|
2279 if ( !driver ) |
|
2280 return FT_Err_Invalid_Driver_Handle; |
|
2281 |
|
2282 error = FT_Stream_New( driver->root.library, parameters, &stream ); |
|
2283 if ( error ) |
|
2284 goto Exit; |
|
2285 |
|
2286 /* we implement FT_Attach_Stream in each driver through the */ |
|
2287 /* `attach_file' interface */ |
|
2288 |
|
2289 error = FT_Err_Unimplemented_Feature; |
|
2290 clazz = driver->clazz; |
|
2291 if ( clazz->attach_file ) |
|
2292 error = clazz->attach_file( face, stream ); |
|
2293 |
|
2294 /* close the attached stream */ |
|
2295 FT_Stream_Free( stream, |
|
2296 (FT_Bool)( parameters->stream && |
|
2297 ( parameters->flags & FT_OPEN_STREAM ) ) ); |
|
2298 |
|
2299 Exit: |
|
2300 return error; |
|
2301 } |
|
2302 |
|
2303 |
|
2304 /* documentation is in freetype.h */ |
|
2305 |
|
2306 FT_EXPORT_DEF( FT_Error ) |
|
2307 FT_Reference_Face( FT_Face face ) |
|
2308 { |
|
2309 face->internal->refcount++; |
|
2310 |
|
2311 return FT_Err_Ok; |
|
2312 } |
|
2313 |
|
2314 |
|
2315 /* documentation is in freetype.h */ |
|
2316 |
|
2317 FT_EXPORT_DEF( FT_Error ) |
|
2318 FT_Done_Face( FT_Face face ) |
|
2319 { |
|
2320 FT_Error error; |
|
2321 FT_Driver driver; |
|
2322 FT_Memory memory; |
|
2323 FT_ListNode node; |
|
2324 |
|
2325 |
|
2326 error = FT_Err_Invalid_Face_Handle; |
|
2327 if ( face && face->driver ) |
|
2328 { |
|
2329 face->internal->refcount--; |
|
2330 if ( face->internal->refcount > 0 ) |
|
2331 error = FT_Err_Ok; |
|
2332 else |
|
2333 { |
|
2334 driver = face->driver; |
|
2335 memory = driver->root.memory; |
|
2336 |
|
2337 /* find face in driver's list */ |
|
2338 node = FT_List_Find( &driver->faces_list, face ); |
|
2339 if ( node ) |
|
2340 { |
|
2341 /* remove face object from the driver's list */ |
|
2342 FT_List_Remove( &driver->faces_list, node ); |
|
2343 FT_FREE( node ); |
|
2344 |
|
2345 /* now destroy the object proper */ |
|
2346 destroy_face( memory, face, driver ); |
|
2347 error = FT_Err_Ok; |
|
2348 } |
|
2349 } |
|
2350 } |
|
2351 |
|
2352 return error; |
|
2353 } |
|
2354 |
|
2355 |
|
2356 /* documentation is in ftobjs.h */ |
|
2357 |
|
2358 FT_EXPORT_DEF( FT_Error ) |
|
2359 FT_New_Size( FT_Face face, |
|
2360 FT_Size *asize ) |
|
2361 { |
|
2362 FT_Error error; |
|
2363 FT_Memory memory; |
|
2364 FT_Driver driver; |
|
2365 FT_Driver_Class clazz; |
|
2366 |
|
2367 FT_Size size = 0; |
|
2368 FT_ListNode node = 0; |
|
2369 |
|
2370 |
|
2371 if ( !face ) |
|
2372 return FT_Err_Invalid_Face_Handle; |
|
2373 |
|
2374 if ( !asize ) |
|
2375 return FT_Err_Invalid_Size_Handle; |
|
2376 |
|
2377 if ( !face->driver ) |
|
2378 return FT_Err_Invalid_Driver_Handle; |
|
2379 |
|
2380 *asize = 0; |
|
2381 |
|
2382 driver = face->driver; |
|
2383 clazz = driver->clazz; |
|
2384 memory = face->memory; |
|
2385 |
|
2386 /* Allocate new size object and perform basic initialisation */ |
|
2387 if ( FT_ALLOC( size, clazz->size_object_size ) || FT_NEW( node ) ) |
|
2388 goto Exit; |
|
2389 |
|
2390 size->face = face; |
|
2391 |
|
2392 /* for now, do not use any internal fields in size objects */ |
|
2393 size->internal = 0; |
|
2394 |
|
2395 if ( clazz->init_size ) |
|
2396 error = clazz->init_size( size ); |
|
2397 |
|
2398 /* in case of success, add to the face's list */ |
|
2399 if ( !error ) |
|
2400 { |
|
2401 *asize = size; |
|
2402 node->data = size; |
|
2403 FT_List_Add( &face->sizes_list, node ); |
|
2404 } |
|
2405 |
|
2406 Exit: |
|
2407 if ( error ) |
|
2408 { |
|
2409 FT_FREE( node ); |
|
2410 FT_FREE( size ); |
|
2411 } |
|
2412 |
|
2413 return error; |
|
2414 } |
|
2415 |
|
2416 |
|
2417 /* documentation is in ftobjs.h */ |
|
2418 |
|
2419 FT_EXPORT_DEF( FT_Error ) |
|
2420 FT_Done_Size( FT_Size size ) |
|
2421 { |
|
2422 FT_Error error; |
|
2423 FT_Driver driver; |
|
2424 FT_Memory memory; |
|
2425 FT_Face face; |
|
2426 FT_ListNode node; |
|
2427 |
|
2428 |
|
2429 if ( !size ) |
|
2430 return FT_Err_Invalid_Size_Handle; |
|
2431 |
|
2432 face = size->face; |
|
2433 if ( !face ) |
|
2434 return FT_Err_Invalid_Face_Handle; |
|
2435 |
|
2436 driver = face->driver; |
|
2437 if ( !driver ) |
|
2438 return FT_Err_Invalid_Driver_Handle; |
|
2439 |
|
2440 memory = driver->root.memory; |
|
2441 |
|
2442 error = FT_Err_Ok; |
|
2443 node = FT_List_Find( &face->sizes_list, size ); |
|
2444 if ( node ) |
|
2445 { |
|
2446 FT_List_Remove( &face->sizes_list, node ); |
|
2447 FT_FREE( node ); |
|
2448 |
|
2449 if ( face->size == size ) |
|
2450 { |
|
2451 face->size = 0; |
|
2452 if ( face->sizes_list.head ) |
|
2453 face->size = (FT_Size)(face->sizes_list.head->data); |
|
2454 } |
|
2455 |
|
2456 destroy_size( memory, size, driver ); |
|
2457 } |
|
2458 else |
|
2459 error = FT_Err_Invalid_Size_Handle; |
|
2460 |
|
2461 return error; |
|
2462 } |
|
2463 |
|
2464 |
|
2465 /* documentation is in ftobjs.h */ |
|
2466 |
|
2467 FT_BASE_DEF( FT_Error ) |
|
2468 FT_Match_Size( FT_Face face, |
|
2469 FT_Size_Request req, |
|
2470 FT_Bool ignore_width, |
|
2471 FT_ULong* size_index ) |
|
2472 { |
|
2473 FT_Int i; |
|
2474 FT_Long w, h; |
|
2475 |
|
2476 |
|
2477 if ( !FT_HAS_FIXED_SIZES( face ) ) |
|
2478 return FT_Err_Invalid_Face_Handle; |
|
2479 |
|
2480 /* FT_Bitmap_Size doesn't provide enough info... */ |
|
2481 if ( req->type != FT_SIZE_REQUEST_TYPE_NOMINAL ) |
|
2482 return FT_Err_Unimplemented_Feature; |
|
2483 |
|
2484 w = FT_REQUEST_WIDTH ( req ); |
|
2485 h = FT_REQUEST_HEIGHT( req ); |
|
2486 |
|
2487 if ( req->width && !req->height ) |
|
2488 h = w; |
|
2489 else if ( !req->width && req->height ) |
|
2490 w = h; |
|
2491 |
|
2492 w = FT_PIX_ROUND( w ); |
|
2493 h = FT_PIX_ROUND( h ); |
|
2494 |
|
2495 for ( i = 0; i < face->num_fixed_sizes; i++ ) |
|
2496 { |
|
2497 FT_Bitmap_Size* bsize = face->available_sizes + i; |
|
2498 |
|
2499 |
|
2500 if ( h != FT_PIX_ROUND( bsize->y_ppem ) ) |
|
2501 continue; |
|
2502 |
|
2503 if ( w == FT_PIX_ROUND( bsize->x_ppem ) || ignore_width ) |
|
2504 { |
|
2505 if ( size_index ) |
|
2506 *size_index = (FT_ULong)i; |
|
2507 |
|
2508 return FT_Err_Ok; |
|
2509 } |
|
2510 } |
|
2511 |
|
2512 return FT_Err_Invalid_Pixel_Size; |
|
2513 } |
|
2514 |
|
2515 |
|
2516 /* documentation is in ftobjs.h */ |
|
2517 |
|
2518 FT_BASE_DEF( void ) |
|
2519 ft_synthesize_vertical_metrics( FT_Glyph_Metrics* metrics, |
|
2520 FT_Pos advance ) |
|
2521 { |
|
2522 FT_Pos height = metrics->height; |
|
2523 |
|
2524 |
|
2525 /* compensate for glyph with bbox above/below the baseline */ |
|
2526 if ( metrics->horiBearingY < 0 ) |
|
2527 { |
|
2528 if ( height < metrics->horiBearingY ) |
|
2529 height = metrics->horiBearingY; |
|
2530 } |
|
2531 else if ( metrics->horiBearingY > 0 ) |
|
2532 height -= metrics->horiBearingY; |
|
2533 |
|
2534 /* the factor 1.2 is a heuristical value */ |
|
2535 if ( !advance ) |
|
2536 advance = height * 12 / 10; |
|
2537 |
|
2538 metrics->vertBearingX = metrics->horiBearingX - metrics->horiAdvance / 2; |
|
2539 metrics->vertBearingY = ( advance - height ) / 2; |
|
2540 metrics->vertAdvance = advance; |
|
2541 } |
|
2542 |
|
2543 |
|
2544 static void |
|
2545 ft_recompute_scaled_metrics( FT_Face face, |
|
2546 FT_Size_Metrics* metrics ) |
|
2547 { |
|
2548 /* Compute root ascender, descender, test height, and max_advance */ |
|
2549 |
|
2550 #ifdef GRID_FIT_METRICS |
|
2551 metrics->ascender = FT_PIX_CEIL( FT_MulFix( face->ascender, |
|
2552 metrics->y_scale ) ); |
|
2553 |
|
2554 metrics->descender = FT_PIX_FLOOR( FT_MulFix( face->descender, |
|
2555 metrics->y_scale ) ); |
|
2556 |
|
2557 metrics->height = FT_PIX_ROUND( FT_MulFix( face->height, |
|
2558 metrics->y_scale ) ); |
|
2559 |
|
2560 metrics->max_advance = FT_PIX_ROUND( FT_MulFix( face->max_advance_width, |
|
2561 metrics->x_scale ) ); |
|
2562 #else /* !GRID_FIT_METRICS */ |
|
2563 metrics->ascender = FT_MulFix( face->ascender, |
|
2564 metrics->y_scale ); |
|
2565 |
|
2566 metrics->descender = FT_MulFix( face->descender, |
|
2567 metrics->y_scale ); |
|
2568 |
|
2569 metrics->height = FT_MulFix( face->height, |
|
2570 metrics->y_scale ); |
|
2571 |
|
2572 metrics->max_advance = FT_MulFix( face->max_advance_width, |
|
2573 metrics->x_scale ); |
|
2574 #endif /* !GRID_FIT_METRICS */ |
|
2575 } |
|
2576 |
|
2577 |
|
2578 FT_BASE_DEF( void ) |
|
2579 FT_Select_Metrics( FT_Face face, |
|
2580 FT_ULong strike_index ) |
|
2581 { |
|
2582 FT_Size_Metrics* metrics; |
|
2583 FT_Bitmap_Size* bsize; |
|
2584 |
|
2585 |
|
2586 metrics = &face->size->metrics; |
|
2587 bsize = face->available_sizes + strike_index; |
|
2588 |
|
2589 metrics->x_ppem = (FT_UShort)( ( bsize->x_ppem + 32 ) >> 6 ); |
|
2590 metrics->y_ppem = (FT_UShort)( ( bsize->y_ppem + 32 ) >> 6 ); |
|
2591 |
|
2592 if ( FT_IS_SCALABLE( face ) ) |
|
2593 { |
|
2594 metrics->x_scale = FT_DivFix( bsize->x_ppem, |
|
2595 face->units_per_EM ); |
|
2596 metrics->y_scale = FT_DivFix( bsize->y_ppem, |
|
2597 face->units_per_EM ); |
|
2598 |
|
2599 ft_recompute_scaled_metrics( face, metrics ); |
|
2600 } |
|
2601 else |
|
2602 { |
|
2603 metrics->x_scale = 1L << 16; |
|
2604 metrics->y_scale = 1L << 16; |
|
2605 metrics->ascender = bsize->y_ppem; |
|
2606 metrics->descender = 0; |
|
2607 metrics->height = bsize->height << 6; |
|
2608 metrics->max_advance = bsize->x_ppem; |
|
2609 } |
|
2610 } |
|
2611 |
|
2612 |
|
2613 FT_BASE_DEF( void ) |
|
2614 FT_Request_Metrics( FT_Face face, |
|
2615 FT_Size_Request req ) |
|
2616 { |
|
2617 FT_Size_Metrics* metrics; |
|
2618 |
|
2619 |
|
2620 metrics = &face->size->metrics; |
|
2621 |
|
2622 if ( FT_IS_SCALABLE( face ) ) |
|
2623 { |
|
2624 FT_Long w = 0, h = 0, scaled_w = 0, scaled_h = 0; |
|
2625 |
|
2626 |
|
2627 switch ( req->type ) |
|
2628 { |
|
2629 case FT_SIZE_REQUEST_TYPE_NOMINAL: |
|
2630 w = h = face->units_per_EM; |
|
2631 break; |
|
2632 |
|
2633 case FT_SIZE_REQUEST_TYPE_REAL_DIM: |
|
2634 w = h = face->ascender - face->descender; |
|
2635 break; |
|
2636 |
|
2637 case FT_SIZE_REQUEST_TYPE_BBOX: |
|
2638 w = face->bbox.xMax - face->bbox.xMin; |
|
2639 h = face->bbox.yMax - face->bbox.yMin; |
|
2640 break; |
|
2641 |
|
2642 case FT_SIZE_REQUEST_TYPE_CELL: |
|
2643 w = face->max_advance_width; |
|
2644 h = face->ascender - face->descender; |
|
2645 break; |
|
2646 |
|
2647 case FT_SIZE_REQUEST_TYPE_SCALES: |
|
2648 metrics->x_scale = (FT_Fixed)req->width; |
|
2649 metrics->y_scale = (FT_Fixed)req->height; |
|
2650 if ( !metrics->x_scale ) |
|
2651 metrics->x_scale = metrics->y_scale; |
|
2652 else if ( !metrics->y_scale ) |
|
2653 metrics->y_scale = metrics->x_scale; |
|
2654 goto Calculate_Ppem; |
|
2655 |
|
2656 case FT_SIZE_REQUEST_TYPE_MAX: |
|
2657 break; |
|
2658 } |
|
2659 |
|
2660 /* to be on the safe side */ |
|
2661 if ( w < 0 ) |
|
2662 w = -w; |
|
2663 |
|
2664 if ( h < 0 ) |
|
2665 h = -h; |
|
2666 |
|
2667 scaled_w = FT_REQUEST_WIDTH ( req ); |
|
2668 scaled_h = FT_REQUEST_HEIGHT( req ); |
|
2669 |
|
2670 /* determine scales */ |
|
2671 if ( req->width ) |
|
2672 { |
|
2673 metrics->x_scale = FT_DivFix( scaled_w, w ); |
|
2674 |
|
2675 if ( req->height ) |
|
2676 { |
|
2677 metrics->y_scale = FT_DivFix( scaled_h, h ); |
|
2678 |
|
2679 if ( req->type == FT_SIZE_REQUEST_TYPE_CELL ) |
|
2680 { |
|
2681 if ( metrics->y_scale > metrics->x_scale ) |
|
2682 metrics->y_scale = metrics->x_scale; |
|
2683 else |
|
2684 metrics->x_scale = metrics->y_scale; |
|
2685 } |
|
2686 } |
|
2687 else |
|
2688 { |
|
2689 metrics->y_scale = metrics->x_scale; |
|
2690 scaled_h = FT_MulDiv( scaled_w, h, w ); |
|
2691 } |
|
2692 } |
|
2693 else |
|
2694 { |
|
2695 metrics->x_scale = metrics->y_scale = FT_DivFix( scaled_h, h ); |
|
2696 scaled_w = FT_MulDiv( scaled_h, w, h ); |
|
2697 } |
|
2698 |
|
2699 Calculate_Ppem: |
|
2700 /* calculate the ppems */ |
|
2701 if ( req->type != FT_SIZE_REQUEST_TYPE_NOMINAL ) |
|
2702 { |
|
2703 scaled_w = FT_MulFix( face->units_per_EM, metrics->x_scale ); |
|
2704 scaled_h = FT_MulFix( face->units_per_EM, metrics->y_scale ); |
|
2705 } |
|
2706 |
|
2707 metrics->x_ppem = (FT_UShort)( ( scaled_w + 32 ) >> 6 ); |
|
2708 metrics->y_ppem = (FT_UShort)( ( scaled_h + 32 ) >> 6 ); |
|
2709 |
|
2710 ft_recompute_scaled_metrics( face, metrics ); |
|
2711 } |
|
2712 else |
|
2713 { |
|
2714 FT_ZERO( metrics ); |
|
2715 metrics->x_scale = 1L << 16; |
|
2716 metrics->y_scale = 1L << 16; |
|
2717 } |
|
2718 } |
|
2719 |
|
2720 |
|
2721 /* documentation is in freetype.h */ |
|
2722 |
|
2723 FT_EXPORT_DEF( FT_Error ) |
|
2724 FT_Select_Size( FT_Face face, |
|
2725 FT_Int strike_index ) |
|
2726 { |
|
2727 FT_Driver_Class clazz; |
|
2728 |
|
2729 |
|
2730 if ( !face || !FT_HAS_FIXED_SIZES( face ) ) |
|
2731 return FT_Err_Invalid_Face_Handle; |
|
2732 |
|
2733 if ( strike_index < 0 || strike_index >= face->num_fixed_sizes ) |
|
2734 return FT_Err_Invalid_Argument; |
|
2735 |
|
2736 clazz = face->driver->clazz; |
|
2737 |
|
2738 if ( clazz->select_size ) |
|
2739 return clazz->select_size( face->size, (FT_ULong)strike_index ); |
|
2740 |
|
2741 FT_Select_Metrics( face, (FT_ULong)strike_index ); |
|
2742 |
|
2743 return FT_Err_Ok; |
|
2744 } |
|
2745 |
|
2746 |
|
2747 /* documentation is in freetype.h */ |
|
2748 |
|
2749 FT_EXPORT_DEF( FT_Error ) |
|
2750 FT_Request_Size( FT_Face face, |
|
2751 FT_Size_Request req ) |
|
2752 { |
|
2753 FT_Driver_Class clazz; |
|
2754 FT_ULong strike_index; |
|
2755 |
|
2756 |
|
2757 if ( !face ) |
|
2758 return FT_Err_Invalid_Face_Handle; |
|
2759 |
|
2760 if ( !req || req->width < 0 || req->height < 0 || |
|
2761 req->type >= FT_SIZE_REQUEST_TYPE_MAX ) |
|
2762 return FT_Err_Invalid_Argument; |
|
2763 |
|
2764 clazz = face->driver->clazz; |
|
2765 |
|
2766 if ( clazz->request_size ) |
|
2767 return clazz->request_size( face->size, req ); |
|
2768 |
|
2769 /* |
|
2770 * The reason that a driver doesn't have `request_size' defined is |
|
2771 * either that the scaling here suffices or that the supported formats |
|
2772 * are bitmap-only and size matching is not implemented. |
|
2773 * |
|
2774 * In the latter case, a simple size matching is done. |
|
2775 */ |
|
2776 if ( !FT_IS_SCALABLE( face ) && FT_HAS_FIXED_SIZES( face ) ) |
|
2777 { |
|
2778 FT_Error error; |
|
2779 |
|
2780 |
|
2781 error = FT_Match_Size( face, req, 0, &strike_index ); |
|
2782 if ( error ) |
|
2783 return error; |
|
2784 |
|
2785 FT_TRACE3(( "FT_Request_Size: bitmap strike %lu matched\n", |
|
2786 strike_index )); |
|
2787 |
|
2788 return FT_Select_Size( face, (FT_Int)strike_index ); |
|
2789 } |
|
2790 |
|
2791 FT_Request_Metrics( face, req ); |
|
2792 |
|
2793 return FT_Err_Ok; |
|
2794 } |
|
2795 |
|
2796 |
|
2797 /* documentation is in freetype.h */ |
|
2798 |
|
2799 FT_EXPORT_DEF( FT_Error ) |
|
2800 FT_Set_Char_Size( FT_Face face, |
|
2801 FT_F26Dot6 char_width, |
|
2802 FT_F26Dot6 char_height, |
|
2803 FT_UInt horz_resolution, |
|
2804 FT_UInt vert_resolution ) |
|
2805 { |
|
2806 FT_Size_RequestRec req; |
|
2807 |
|
2808 |
|
2809 if ( !char_width ) |
|
2810 char_width = char_height; |
|
2811 else if ( !char_height ) |
|
2812 char_height = char_width; |
|
2813 |
|
2814 if ( !horz_resolution ) |
|
2815 horz_resolution = vert_resolution; |
|
2816 else if ( !vert_resolution ) |
|
2817 vert_resolution = horz_resolution; |
|
2818 |
|
2819 if ( char_width < 1 * 64 ) |
|
2820 char_width = 1 * 64; |
|
2821 if ( char_height < 1 * 64 ) |
|
2822 char_height = 1 * 64; |
|
2823 |
|
2824 if ( !horz_resolution ) |
|
2825 horz_resolution = vert_resolution = 72; |
|
2826 |
|
2827 req.type = FT_SIZE_REQUEST_TYPE_NOMINAL; |
|
2828 req.width = char_width; |
|
2829 req.height = char_height; |
|
2830 req.horiResolution = horz_resolution; |
|
2831 req.vertResolution = vert_resolution; |
|
2832 |
|
2833 return FT_Request_Size( face, &req ); |
|
2834 } |
|
2835 |
|
2836 |
|
2837 /* documentation is in freetype.h */ |
|
2838 |
|
2839 FT_EXPORT_DEF( FT_Error ) |
|
2840 FT_Set_Pixel_Sizes( FT_Face face, |
|
2841 FT_UInt pixel_width, |
|
2842 FT_UInt pixel_height ) |
|
2843 { |
|
2844 FT_Size_RequestRec req; |
|
2845 |
|
2846 |
|
2847 if ( pixel_width == 0 ) |
|
2848 pixel_width = pixel_height; |
|
2849 else if ( pixel_height == 0 ) |
|
2850 pixel_height = pixel_width; |
|
2851 |
|
2852 if ( pixel_width < 1 ) |
|
2853 pixel_width = 1; |
|
2854 if ( pixel_height < 1 ) |
|
2855 pixel_height = 1; |
|
2856 |
|
2857 /* use `>=' to avoid potential compiler warning on 16bit platforms */ |
|
2858 if ( pixel_width >= 0xFFFFU ) |
|
2859 pixel_width = 0xFFFFU; |
|
2860 if ( pixel_height >= 0xFFFFU ) |
|
2861 pixel_height = 0xFFFFU; |
|
2862 |
|
2863 req.type = FT_SIZE_REQUEST_TYPE_NOMINAL; |
|
2864 req.width = pixel_width << 6; |
|
2865 req.height = pixel_height << 6; |
|
2866 req.horiResolution = 0; |
|
2867 req.vertResolution = 0; |
|
2868 |
|
2869 return FT_Request_Size( face, &req ); |
|
2870 } |
|
2871 |
|
2872 |
|
2873 /* documentation is in freetype.h */ |
|
2874 |
|
2875 FT_EXPORT_DEF( FT_Error ) |
|
2876 FT_Get_Kerning( FT_Face face, |
|
2877 FT_UInt left_glyph, |
|
2878 FT_UInt right_glyph, |
|
2879 FT_UInt kern_mode, |
|
2880 FT_Vector *akerning ) |
|
2881 { |
|
2882 FT_Error error = FT_Err_Ok; |
|
2883 FT_Driver driver; |
|
2884 |
|
2885 |
|
2886 if ( !face ) |
|
2887 return FT_Err_Invalid_Face_Handle; |
|
2888 |
|
2889 if ( !akerning ) |
|
2890 return FT_Err_Invalid_Argument; |
|
2891 |
|
2892 driver = face->driver; |
|
2893 |
|
2894 akerning->x = 0; |
|
2895 akerning->y = 0; |
|
2896 |
|
2897 if ( driver->clazz->get_kerning ) |
|
2898 { |
|
2899 error = driver->clazz->get_kerning( face, |
|
2900 left_glyph, |
|
2901 right_glyph, |
|
2902 akerning ); |
|
2903 if ( !error ) |
|
2904 { |
|
2905 if ( kern_mode != FT_KERNING_UNSCALED ) |
|
2906 { |
|
2907 akerning->x = FT_MulFix( akerning->x, face->size->metrics.x_scale ); |
|
2908 akerning->y = FT_MulFix( akerning->y, face->size->metrics.y_scale ); |
|
2909 |
|
2910 if ( kern_mode != FT_KERNING_UNFITTED ) |
|
2911 { |
|
2912 /* we scale down kerning values for small ppem values */ |
|
2913 /* to avoid that rounding makes them too big. */ |
|
2914 /* `25' has been determined heuristically. */ |
|
2915 if ( face->size->metrics.x_ppem < 25 ) |
|
2916 akerning->x = FT_MulDiv( akerning->x, |
|
2917 face->size->metrics.x_ppem, 25 ); |
|
2918 if ( face->size->metrics.y_ppem < 25 ) |
|
2919 akerning->y = FT_MulDiv( akerning->y, |
|
2920 face->size->metrics.y_ppem, 25 ); |
|
2921 |
|
2922 akerning->x = FT_PIX_ROUND( akerning->x ); |
|
2923 akerning->y = FT_PIX_ROUND( akerning->y ); |
|
2924 } |
|
2925 } |
|
2926 } |
|
2927 } |
|
2928 |
|
2929 return error; |
|
2930 } |
|
2931 |
|
2932 |
|
2933 /* documentation is in freetype.h */ |
|
2934 |
|
2935 FT_EXPORT_DEF( FT_Error ) |
|
2936 FT_Get_Track_Kerning( FT_Face face, |
|
2937 FT_Fixed point_size, |
|
2938 FT_Int degree, |
|
2939 FT_Fixed* akerning ) |
|
2940 { |
|
2941 FT_Service_Kerning service; |
|
2942 FT_Error error = FT_Err_Ok; |
|
2943 |
|
2944 |
|
2945 if ( !face ) |
|
2946 return FT_Err_Invalid_Face_Handle; |
|
2947 |
|
2948 if ( !akerning ) |
|
2949 return FT_Err_Invalid_Argument; |
|
2950 |
|
2951 FT_FACE_FIND_SERVICE( face, service, KERNING ); |
|
2952 if ( !service ) |
|
2953 return FT_Err_Unimplemented_Feature; |
|
2954 |
|
2955 error = service->get_track( face, |
|
2956 point_size, |
|
2957 degree, |
|
2958 akerning ); |
|
2959 |
|
2960 return error; |
|
2961 } |
|
2962 |
|
2963 |
|
2964 /* documentation is in freetype.h */ |
|
2965 |
|
2966 FT_EXPORT_DEF( FT_Error ) |
|
2967 FT_Select_Charmap( FT_Face face, |
|
2968 FT_Encoding encoding ) |
|
2969 { |
|
2970 FT_CharMap* cur; |
|
2971 FT_CharMap* limit; |
|
2972 |
|
2973 |
|
2974 if ( !face ) |
|
2975 return FT_Err_Invalid_Face_Handle; |
|
2976 |
|
2977 if ( encoding == FT_ENCODING_NONE ) |
|
2978 return FT_Err_Invalid_Argument; |
|
2979 |
|
2980 /* FT_ENCODING_UNICODE is special. We try to find the `best' Unicode */ |
|
2981 /* charmap available, i.e., one with UCS-4 characters, if possible. */ |
|
2982 /* */ |
|
2983 /* This is done by find_unicode_charmap() above, to share code. */ |
|
2984 if ( encoding == FT_ENCODING_UNICODE ) |
|
2985 return find_unicode_charmap( face ); |
|
2986 |
|
2987 cur = face->charmaps; |
|
2988 if ( !cur ) |
|
2989 return FT_Err_Invalid_CharMap_Handle; |
|
2990 |
|
2991 limit = cur + face->num_charmaps; |
|
2992 |
|
2993 for ( ; cur < limit; cur++ ) |
|
2994 { |
|
2995 if ( cur[0]->encoding == encoding ) |
|
2996 { |
|
2997 #ifdef FT_MAX_CHARMAP_CACHEABLE |
|
2998 if ( cur - face->charmaps > FT_MAX_CHARMAP_CACHEABLE ) |
|
2999 { |
|
3000 FT_ERROR(( "FT_Select_Charmap: requested charmap is found (%d), " |
|
3001 "but in too late position to cache\n", |
|
3002 cur - face->charmaps )); |
|
3003 continue; |
|
3004 } |
|
3005 #endif |
|
3006 face->charmap = cur[0]; |
|
3007 return 0; |
|
3008 } |
|
3009 } |
|
3010 |
|
3011 return FT_Err_Invalid_Argument; |
|
3012 } |
|
3013 |
|
3014 |
|
3015 /* documentation is in freetype.h */ |
|
3016 |
|
3017 FT_EXPORT_DEF( FT_Error ) |
|
3018 FT_Set_Charmap( FT_Face face, |
|
3019 FT_CharMap charmap ) |
|
3020 { |
|
3021 FT_CharMap* cur; |
|
3022 FT_CharMap* limit; |
|
3023 |
|
3024 |
|
3025 if ( !face ) |
|
3026 return FT_Err_Invalid_Face_Handle; |
|
3027 |
|
3028 cur = face->charmaps; |
|
3029 if ( !cur ) |
|
3030 return FT_Err_Invalid_CharMap_Handle; |
|
3031 if ( FT_Get_CMap_Format( charmap ) == 14 ) |
|
3032 return FT_Err_Invalid_Argument; |
|
3033 |
|
3034 limit = cur + face->num_charmaps; |
|
3035 |
|
3036 for ( ; cur < limit; cur++ ) |
|
3037 { |
|
3038 if ( cur[0] == charmap ) |
|
3039 { |
|
3040 #ifdef FT_MAX_CHARMAP_CACHEABLE |
|
3041 if ( cur - face->charmaps > FT_MAX_CHARMAP_CACHEABLE ) |
|
3042 { |
|
3043 FT_ERROR(( "FT_Set_Charmap: requested charmap is found (%d), " |
|
3044 "but in too late position to cache\n", |
|
3045 cur - face->charmaps )); |
|
3046 continue; |
|
3047 } |
|
3048 #endif |
|
3049 face->charmap = cur[0]; |
|
3050 return 0; |
|
3051 } |
|
3052 } |
|
3053 return FT_Err_Invalid_Argument; |
|
3054 } |
|
3055 |
|
3056 |
|
3057 /* documentation is in freetype.h */ |
|
3058 |
|
3059 FT_EXPORT_DEF( FT_Int ) |
|
3060 FT_Get_Charmap_Index( FT_CharMap charmap ) |
|
3061 { |
|
3062 FT_Int i; |
|
3063 |
|
3064 |
|
3065 if ( !charmap || !charmap->face ) |
|
3066 return -1; |
|
3067 |
|
3068 for ( i = 0; i < charmap->face->num_charmaps; i++ ) |
|
3069 if ( charmap->face->charmaps[i] == charmap ) |
|
3070 break; |
|
3071 |
|
3072 FT_ASSERT( i < charmap->face->num_charmaps ); |
|
3073 |
|
3074 #ifdef FT_MAX_CHARMAP_CACHEABLE |
|
3075 if ( i > FT_MAX_CHARMAP_CACHEABLE ) |
|
3076 { |
|
3077 FT_ERROR(( "FT_Get_Charmap_Index: requested charmap is found (%d), " |
|
3078 "but in too late position to cache\n", |
|
3079 i )); |
|
3080 return -i; |
|
3081 } |
|
3082 #endif |
|
3083 return i; |
|
3084 } |
|
3085 |
|
3086 |
|
3087 static void |
|
3088 ft_cmap_done_internal( FT_CMap cmap ) |
|
3089 { |
|
3090 FT_CMap_Class clazz = cmap->clazz; |
|
3091 FT_Face face = cmap->charmap.face; |
|
3092 FT_Memory memory = FT_FACE_MEMORY(face); |
|
3093 |
|
3094 |
|
3095 if ( clazz->done ) |
|
3096 clazz->done( cmap ); |
|
3097 |
|
3098 FT_FREE( cmap ); |
|
3099 } |
|
3100 |
|
3101 |
|
3102 FT_BASE_DEF( void ) |
|
3103 FT_CMap_Done( FT_CMap cmap ) |
|
3104 { |
|
3105 if ( cmap ) |
|
3106 { |
|
3107 FT_Face face = cmap->charmap.face; |
|
3108 FT_Memory memory = FT_FACE_MEMORY( face ); |
|
3109 FT_Error error; |
|
3110 FT_Int i, j; |
|
3111 |
|
3112 |
|
3113 for ( i = 0; i < face->num_charmaps; i++ ) |
|
3114 { |
|
3115 if ( (FT_CMap)face->charmaps[i] == cmap ) |
|
3116 { |
|
3117 FT_CharMap last_charmap = face->charmaps[face->num_charmaps - 1]; |
|
3118 |
|
3119 |
|
3120 if ( FT_RENEW_ARRAY( face->charmaps, |
|
3121 face->num_charmaps, |
|
3122 face->num_charmaps - 1 ) ) |
|
3123 return; |
|
3124 |
|
3125 /* remove it from our list of charmaps */ |
|
3126 for ( j = i + 1; j < face->num_charmaps; j++ ) |
|
3127 { |
|
3128 if ( j == face->num_charmaps - 1 ) |
|
3129 face->charmaps[j - 1] = last_charmap; |
|
3130 else |
|
3131 face->charmaps[j - 1] = face->charmaps[j]; |
|
3132 } |
|
3133 |
|
3134 face->num_charmaps--; |
|
3135 |
|
3136 if ( (FT_CMap)face->charmap == cmap ) |
|
3137 face->charmap = NULL; |
|
3138 |
|
3139 ft_cmap_done_internal( cmap ); |
|
3140 |
|
3141 break; |
|
3142 } |
|
3143 } |
|
3144 } |
|
3145 } |
|
3146 |
|
3147 |
|
3148 FT_BASE_DEF( FT_Error ) |
|
3149 FT_CMap_New( FT_CMap_Class clazz, |
|
3150 FT_Pointer init_data, |
|
3151 FT_CharMap charmap, |
|
3152 FT_CMap *acmap ) |
|
3153 { |
|
3154 FT_Error error = FT_Err_Ok; |
|
3155 FT_Face face; |
|
3156 FT_Memory memory; |
|
3157 FT_CMap cmap; |
|
3158 |
|
3159 |
|
3160 if ( clazz == NULL || charmap == NULL || charmap->face == NULL ) |
|
3161 return FT_Err_Invalid_Argument; |
|
3162 |
|
3163 face = charmap->face; |
|
3164 memory = FT_FACE_MEMORY( face ); |
|
3165 |
|
3166 if ( !FT_ALLOC( cmap, clazz->size ) ) |
|
3167 { |
|
3168 cmap->charmap = *charmap; |
|
3169 cmap->clazz = clazz; |
|
3170 |
|
3171 if ( clazz->init ) |
|
3172 { |
|
3173 error = clazz->init( cmap, init_data ); |
|
3174 if ( error ) |
|
3175 goto Fail; |
|
3176 } |
|
3177 |
|
3178 /* add it to our list of charmaps */ |
|
3179 if ( FT_RENEW_ARRAY( face->charmaps, |
|
3180 face->num_charmaps, |
|
3181 face->num_charmaps + 1 ) ) |
|
3182 goto Fail; |
|
3183 |
|
3184 face->charmaps[face->num_charmaps++] = (FT_CharMap)cmap; |
|
3185 } |
|
3186 |
|
3187 Exit: |
|
3188 if ( acmap ) |
|
3189 *acmap = cmap; |
|
3190 |
|
3191 return error; |
|
3192 |
|
3193 Fail: |
|
3194 ft_cmap_done_internal( cmap ); |
|
3195 cmap = NULL; |
|
3196 goto Exit; |
|
3197 } |
|
3198 |
|
3199 |
|
3200 /* documentation is in freetype.h */ |
|
3201 |
|
3202 FT_EXPORT_DEF( FT_UInt ) |
|
3203 FT_Get_Char_Index( FT_Face face, |
|
3204 FT_ULong charcode ) |
|
3205 { |
|
3206 FT_UInt result = 0; |
|
3207 |
|
3208 |
|
3209 if ( face && face->charmap ) |
|
3210 { |
|
3211 FT_CMap cmap = FT_CMAP( face->charmap ); |
|
3212 |
|
3213 |
|
3214 if ( charcode > 0xFFFFFFFFUL ) |
|
3215 { |
|
3216 FT_TRACE1(( "FT_Get_Char_Index: too large charcode" )); |
|
3217 FT_TRACE1(( " 0x%x is truncated\n", charcode )); |
|
3218 } |
|
3219 result = cmap->clazz->char_index( cmap, (FT_UInt32)charcode ); |
|
3220 } |
|
3221 return result; |
|
3222 } |
|
3223 |
|
3224 |
|
3225 /* documentation is in freetype.h */ |
|
3226 |
|
3227 FT_EXPORT_DEF( FT_ULong ) |
|
3228 FT_Get_First_Char( FT_Face face, |
|
3229 FT_UInt *agindex ) |
|
3230 { |
|
3231 FT_ULong result = 0; |
|
3232 FT_UInt gindex = 0; |
|
3233 |
|
3234 |
|
3235 if ( face && face->charmap && face->num_glyphs ) |
|
3236 { |
|
3237 gindex = FT_Get_Char_Index( face, 0 ); |
|
3238 if ( gindex == 0 || gindex >= (FT_UInt)face->num_glyphs ) |
|
3239 result = FT_Get_Next_Char( face, 0, &gindex ); |
|
3240 } |
|
3241 |
|
3242 if ( agindex ) |
|
3243 *agindex = gindex; |
|
3244 |
|
3245 return result; |
|
3246 } |
|
3247 |
|
3248 |
|
3249 /* documentation is in freetype.h */ |
|
3250 |
|
3251 FT_EXPORT_DEF( FT_ULong ) |
|
3252 FT_Get_Next_Char( FT_Face face, |
|
3253 FT_ULong charcode, |
|
3254 FT_UInt *agindex ) |
|
3255 { |
|
3256 FT_ULong result = 0; |
|
3257 FT_UInt gindex = 0; |
|
3258 |
|
3259 |
|
3260 if ( face && face->charmap && face->num_glyphs ) |
|
3261 { |
|
3262 FT_UInt32 code = (FT_UInt32)charcode; |
|
3263 FT_CMap cmap = FT_CMAP( face->charmap ); |
|
3264 |
|
3265 |
|
3266 do { |
|
3267 gindex = cmap->clazz->char_next( cmap, &code ); |
|
3268 } while ( gindex >= (FT_UInt)face->num_glyphs ); |
|
3269 |
|
3270 result = ( gindex == 0 ) ? 0 : code; |
|
3271 } |
|
3272 |
|
3273 if ( agindex ) |
|
3274 *agindex = gindex; |
|
3275 |
|
3276 return result; |
|
3277 } |
|
3278 |
|
3279 |
|
3280 /* documentation is in freetype.h */ |
|
3281 |
|
3282 FT_EXPORT_DEF( FT_UInt ) |
|
3283 FT_Face_GetCharVariantIndex( FT_Face face, |
|
3284 FT_ULong charcode, |
|
3285 FT_ULong variantSelector ) |
|
3286 { |
|
3287 FT_UInt result = 0; |
|
3288 |
|
3289 |
|
3290 if ( face && face->charmap && |
|
3291 face->charmap->encoding == FT_ENCODING_UNICODE ) |
|
3292 { |
|
3293 FT_CharMap charmap = find_variant_selector_charmap( face ); |
|
3294 FT_CMap ucmap = FT_CMAP( face->charmap ); |
|
3295 |
|
3296 |
|
3297 if ( charmap != NULL ) |
|
3298 { |
|
3299 FT_CMap vcmap = FT_CMAP( charmap ); |
|
3300 |
|
3301 |
|
3302 if ( charcode > 0xFFFFFFFFUL ) |
|
3303 { |
|
3304 FT_TRACE1(( "FT_Get_Char_Index: too large charcode" )); |
|
3305 FT_TRACE1(( " 0x%x is truncated\n", charcode )); |
|
3306 } |
|
3307 if ( variantSelector > 0xFFFFFFFFUL ) |
|
3308 { |
|
3309 FT_TRACE1(( "FT_Get_Char_Index: too large variantSelector" )); |
|
3310 FT_TRACE1(( " 0x%x is truncated\n", variantSelector )); |
|
3311 } |
|
3312 |
|
3313 result = vcmap->clazz->char_var_index( vcmap, ucmap, |
|
3314 (FT_UInt32)charcode, |
|
3315 (FT_UInt32)variantSelector ); |
|
3316 } |
|
3317 } |
|
3318 |
|
3319 return result; |
|
3320 } |
|
3321 |
|
3322 |
|
3323 /* documentation is in freetype.h */ |
|
3324 |
|
3325 FT_EXPORT_DEF( FT_Int ) |
|
3326 FT_Face_GetCharVariantIsDefault( FT_Face face, |
|
3327 FT_ULong charcode, |
|
3328 FT_ULong variantSelector ) |
|
3329 { |
|
3330 FT_Int result = -1; |
|
3331 |
|
3332 |
|
3333 if ( face ) |
|
3334 { |
|
3335 FT_CharMap charmap = find_variant_selector_charmap( face ); |
|
3336 |
|
3337 |
|
3338 if ( charmap != NULL ) |
|
3339 { |
|
3340 FT_CMap vcmap = FT_CMAP( charmap ); |
|
3341 |
|
3342 |
|
3343 if ( charcode > 0xFFFFFFFFUL ) |
|
3344 { |
|
3345 FT_TRACE1(( "FT_Get_Char_Index: too large charcode" )); |
|
3346 FT_TRACE1(( " 0x%x is truncated\n", charcode )); |
|
3347 } |
|
3348 if ( variantSelector > 0xFFFFFFFFUL ) |
|
3349 { |
|
3350 FT_TRACE1(( "FT_Get_Char_Index: too large variantSelector" )); |
|
3351 FT_TRACE1(( " 0x%x is truncated\n", variantSelector )); |
|
3352 } |
|
3353 |
|
3354 result = vcmap->clazz->char_var_default( vcmap, |
|
3355 (FT_UInt32)charcode, |
|
3356 (FT_UInt32)variantSelector ); |
|
3357 } |
|
3358 } |
|
3359 |
|
3360 return result; |
|
3361 } |
|
3362 |
|
3363 |
|
3364 /* documentation is in freetype.h */ |
|
3365 |
|
3366 FT_EXPORT_DEF( FT_UInt32* ) |
|
3367 FT_Face_GetVariantSelectors( FT_Face face ) |
|
3368 { |
|
3369 FT_UInt32 *result = NULL; |
|
3370 |
|
3371 |
|
3372 if ( face ) |
|
3373 { |
|
3374 FT_CharMap charmap = find_variant_selector_charmap( face ); |
|
3375 |
|
3376 |
|
3377 if ( charmap != NULL ) |
|
3378 { |
|
3379 FT_CMap vcmap = FT_CMAP( charmap ); |
|
3380 FT_Memory memory = FT_FACE_MEMORY( face ); |
|
3381 |
|
3382 |
|
3383 result = vcmap->clazz->variant_list( vcmap, memory ); |
|
3384 } |
|
3385 } |
|
3386 |
|
3387 return result; |
|
3388 } |
|
3389 |
|
3390 |
|
3391 /* documentation is in freetype.h */ |
|
3392 |
|
3393 FT_EXPORT_DEF( FT_UInt32* ) |
|
3394 FT_Face_GetVariantsOfChar( FT_Face face, |
|
3395 FT_ULong charcode ) |
|
3396 { |
|
3397 FT_UInt32 *result = NULL; |
|
3398 |
|
3399 |
|
3400 if ( face ) |
|
3401 { |
|
3402 FT_CharMap charmap = find_variant_selector_charmap( face ); |
|
3403 |
|
3404 |
|
3405 if ( charmap != NULL ) |
|
3406 { |
|
3407 FT_CMap vcmap = FT_CMAP( charmap ); |
|
3408 FT_Memory memory = FT_FACE_MEMORY( face ); |
|
3409 |
|
3410 |
|
3411 if ( charcode > 0xFFFFFFFFUL ) |
|
3412 { |
|
3413 FT_TRACE1(( "FT_Get_Char_Index: too large charcode" )); |
|
3414 FT_TRACE1(( " 0x%x is truncated\n", charcode )); |
|
3415 } |
|
3416 |
|
3417 result = vcmap->clazz->charvariant_list( vcmap, memory, |
|
3418 (FT_UInt32)charcode ); |
|
3419 } |
|
3420 } |
|
3421 return result; |
|
3422 } |
|
3423 |
|
3424 |
|
3425 /* documentation is in freetype.h */ |
|
3426 |
|
3427 FT_EXPORT_DEF( FT_UInt32* ) |
|
3428 FT_Face_GetCharsOfVariant( FT_Face face, |
|
3429 FT_ULong variantSelector ) |
|
3430 { |
|
3431 FT_UInt32 *result = NULL; |
|
3432 |
|
3433 |
|
3434 if ( face ) |
|
3435 { |
|
3436 FT_CharMap charmap = find_variant_selector_charmap( face ); |
|
3437 |
|
3438 |
|
3439 if ( charmap != NULL ) |
|
3440 { |
|
3441 FT_CMap vcmap = FT_CMAP( charmap ); |
|
3442 FT_Memory memory = FT_FACE_MEMORY( face ); |
|
3443 |
|
3444 |
|
3445 if ( variantSelector > 0xFFFFFFFFUL ) |
|
3446 { |
|
3447 FT_TRACE1(( "FT_Get_Char_Index: too large variantSelector" )); |
|
3448 FT_TRACE1(( " 0x%x is truncated\n", variantSelector )); |
|
3449 } |
|
3450 |
|
3451 result = vcmap->clazz->variantchar_list( vcmap, memory, |
|
3452 (FT_UInt32)variantSelector ); |
|
3453 } |
|
3454 } |
|
3455 |
|
3456 return result; |
|
3457 } |
|
3458 |
|
3459 |
|
3460 /* documentation is in freetype.h */ |
|
3461 |
|
3462 FT_EXPORT_DEF( FT_UInt ) |
|
3463 FT_Get_Name_Index( FT_Face face, |
|
3464 FT_String* glyph_name ) |
|
3465 { |
|
3466 FT_UInt result = 0; |
|
3467 |
|
3468 |
|
3469 if ( face && FT_HAS_GLYPH_NAMES( face ) ) |
|
3470 { |
|
3471 FT_Service_GlyphDict service; |
|
3472 |
|
3473 |
|
3474 FT_FACE_LOOKUP_SERVICE( face, |
|
3475 service, |
|
3476 GLYPH_DICT ); |
|
3477 |
|
3478 if ( service && service->name_index ) |
|
3479 result = service->name_index( face, glyph_name ); |
|
3480 } |
|
3481 |
|
3482 return result; |
|
3483 } |
|
3484 |
|
3485 |
|
3486 /* documentation is in freetype.h */ |
|
3487 |
|
3488 FT_EXPORT_DEF( FT_Error ) |
|
3489 FT_Get_Glyph_Name( FT_Face face, |
|
3490 FT_UInt glyph_index, |
|
3491 FT_Pointer buffer, |
|
3492 FT_UInt buffer_max ) |
|
3493 { |
|
3494 FT_Error error = FT_Err_Invalid_Argument; |
|
3495 |
|
3496 |
|
3497 /* clean up buffer */ |
|
3498 if ( buffer && buffer_max > 0 ) |
|
3499 ((FT_Byte*)buffer)[0] = 0; |
|
3500 |
|
3501 if ( face && |
|
3502 (FT_Long)glyph_index <= face->num_glyphs && |
|
3503 FT_HAS_GLYPH_NAMES( face ) ) |
|
3504 { |
|
3505 FT_Service_GlyphDict service; |
|
3506 |
|
3507 |
|
3508 FT_FACE_LOOKUP_SERVICE( face, |
|
3509 service, |
|
3510 GLYPH_DICT ); |
|
3511 |
|
3512 if ( service && service->get_name ) |
|
3513 error = service->get_name( face, glyph_index, buffer, buffer_max ); |
|
3514 } |
|
3515 |
|
3516 return error; |
|
3517 } |
|
3518 |
|
3519 |
|
3520 /* documentation is in freetype.h */ |
|
3521 |
|
3522 FT_EXPORT_DEF( const char* ) |
|
3523 FT_Get_Postscript_Name( FT_Face face ) |
|
3524 { |
|
3525 const char* result = NULL; |
|
3526 |
|
3527 |
|
3528 if ( !face ) |
|
3529 goto Exit; |
|
3530 |
|
3531 if ( !result ) |
|
3532 { |
|
3533 FT_Service_PsFontName service; |
|
3534 |
|
3535 |
|
3536 FT_FACE_LOOKUP_SERVICE( face, |
|
3537 service, |
|
3538 POSTSCRIPT_FONT_NAME ); |
|
3539 |
|
3540 if ( service && service->get_ps_font_name ) |
|
3541 result = service->get_ps_font_name( face ); |
|
3542 } |
|
3543 |
|
3544 Exit: |
|
3545 return result; |
|
3546 } |
|
3547 |
|
3548 |
|
3549 /* documentation is in tttables.h */ |
|
3550 |
|
3551 FT_EXPORT_DEF( void* ) |
|
3552 FT_Get_Sfnt_Table( FT_Face face, |
|
3553 FT_Sfnt_Tag tag ) |
|
3554 { |
|
3555 void* table = 0; |
|
3556 FT_Service_SFNT_Table service; |
|
3557 |
|
3558 |
|
3559 if ( face && FT_IS_SFNT( face ) ) |
|
3560 { |
|
3561 FT_FACE_FIND_SERVICE( face, service, SFNT_TABLE ); |
|
3562 if ( service != NULL ) |
|
3563 table = service->get_table( face, tag ); |
|
3564 } |
|
3565 |
|
3566 return table; |
|
3567 } |
|
3568 |
|
3569 |
|
3570 /* documentation is in tttables.h */ |
|
3571 |
|
3572 FT_EXPORT_DEF( FT_Error ) |
|
3573 FT_Load_Sfnt_Table( FT_Face face, |
|
3574 FT_ULong tag, |
|
3575 FT_Long offset, |
|
3576 FT_Byte* buffer, |
|
3577 FT_ULong* length ) |
|
3578 { |
|
3579 FT_Service_SFNT_Table service; |
|
3580 |
|
3581 |
|
3582 if ( !face || !FT_IS_SFNT( face ) ) |
|
3583 return FT_Err_Invalid_Face_Handle; |
|
3584 |
|
3585 FT_FACE_FIND_SERVICE( face, service, SFNT_TABLE ); |
|
3586 if ( service == NULL ) |
|
3587 return FT_Err_Unimplemented_Feature; |
|
3588 |
|
3589 return service->load_table( face, tag, offset, buffer, length ); |
|
3590 } |
|
3591 |
|
3592 |
|
3593 /* documentation is in tttables.h */ |
|
3594 |
|
3595 FT_EXPORT_DEF( FT_Error ) |
|
3596 FT_Sfnt_Table_Info( FT_Face face, |
|
3597 FT_UInt table_index, |
|
3598 FT_ULong *tag, |
|
3599 FT_ULong *length ) |
|
3600 { |
|
3601 FT_Service_SFNT_Table service; |
|
3602 FT_ULong offset; |
|
3603 |
|
3604 |
|
3605 if ( !face || !FT_IS_SFNT( face ) ) |
|
3606 return FT_Err_Invalid_Face_Handle; |
|
3607 |
|
3608 FT_FACE_FIND_SERVICE( face, service, SFNT_TABLE ); |
|
3609 if ( service == NULL ) |
|
3610 return FT_Err_Unimplemented_Feature; |
|
3611 |
|
3612 return service->table_info( face, table_index, tag, &offset, length ); |
|
3613 } |
|
3614 |
|
3615 |
|
3616 /* documentation is in tttables.h */ |
|
3617 |
|
3618 FT_EXPORT_DEF( FT_ULong ) |
|
3619 FT_Get_CMap_Language_ID( FT_CharMap charmap ) |
|
3620 { |
|
3621 FT_Service_TTCMaps service; |
|
3622 FT_Face face; |
|
3623 TT_CMapInfo cmap_info; |
|
3624 |
|
3625 |
|
3626 if ( !charmap || !charmap->face ) |
|
3627 return 0; |
|
3628 |
|
3629 face = charmap->face; |
|
3630 FT_FACE_FIND_SERVICE( face, service, TT_CMAP ); |
|
3631 if ( service == NULL ) |
|
3632 return 0; |
|
3633 if ( service->get_cmap_info( charmap, &cmap_info )) |
|
3634 return 0; |
|
3635 |
|
3636 return cmap_info.language; |
|
3637 } |
|
3638 |
|
3639 |
|
3640 /* documentation is in tttables.h */ |
|
3641 |
|
3642 FT_EXPORT_DEF( FT_Long ) |
|
3643 FT_Get_CMap_Format( FT_CharMap charmap ) |
|
3644 { |
|
3645 FT_Service_TTCMaps service; |
|
3646 FT_Face face; |
|
3647 TT_CMapInfo cmap_info; |
|
3648 |
|
3649 |
|
3650 if ( !charmap || !charmap->face ) |
|
3651 return -1; |
|
3652 |
|
3653 face = charmap->face; |
|
3654 FT_FACE_FIND_SERVICE( face, service, TT_CMAP ); |
|
3655 if ( service == NULL ) |
|
3656 return -1; |
|
3657 if ( service->get_cmap_info( charmap, &cmap_info )) |
|
3658 return -1; |
|
3659 |
|
3660 return cmap_info.format; |
|
3661 } |
|
3662 |
|
3663 |
|
3664 /* documentation is in ftsizes.h */ |
|
3665 |
|
3666 FT_EXPORT_DEF( FT_Error ) |
|
3667 FT_Activate_Size( FT_Size size ) |
|
3668 { |
|
3669 FT_Face face; |
|
3670 |
|
3671 |
|
3672 if ( size == NULL ) |
|
3673 return FT_Err_Invalid_Argument; |
|
3674 |
|
3675 face = size->face; |
|
3676 if ( face == NULL || face->driver == NULL ) |
|
3677 return FT_Err_Invalid_Argument; |
|
3678 |
|
3679 /* we don't need anything more complex than that; all size objects */ |
|
3680 /* are already listed by the face */ |
|
3681 face->size = size; |
|
3682 |
|
3683 return FT_Err_Ok; |
|
3684 } |
|
3685 |
|
3686 |
|
3687 /*************************************************************************/ |
|
3688 /*************************************************************************/ |
|
3689 /*************************************************************************/ |
|
3690 /**** ****/ |
|
3691 /**** ****/ |
|
3692 /**** R E N D E R E R S ****/ |
|
3693 /**** ****/ |
|
3694 /**** ****/ |
|
3695 /*************************************************************************/ |
|
3696 /*************************************************************************/ |
|
3697 /*************************************************************************/ |
|
3698 |
|
3699 /* lookup a renderer by glyph format in the library's list */ |
|
3700 FT_BASE_DEF( FT_Renderer ) |
|
3701 FT_Lookup_Renderer( FT_Library library, |
|
3702 FT_Glyph_Format format, |
|
3703 FT_ListNode* node ) |
|
3704 { |
|
3705 FT_ListNode cur; |
|
3706 FT_Renderer result = 0; |
|
3707 |
|
3708 |
|
3709 if ( !library ) |
|
3710 goto Exit; |
|
3711 |
|
3712 cur = library->renderers.head; |
|
3713 |
|
3714 if ( node ) |
|
3715 { |
|
3716 if ( *node ) |
|
3717 cur = (*node)->next; |
|
3718 *node = 0; |
|
3719 } |
|
3720 |
|
3721 while ( cur ) |
|
3722 { |
|
3723 FT_Renderer renderer = FT_RENDERER( cur->data ); |
|
3724 |
|
3725 |
|
3726 if ( renderer->glyph_format == format ) |
|
3727 { |
|
3728 if ( node ) |
|
3729 *node = cur; |
|
3730 |
|
3731 result = renderer; |
|
3732 break; |
|
3733 } |
|
3734 cur = cur->next; |
|
3735 } |
|
3736 |
|
3737 Exit: |
|
3738 return result; |
|
3739 } |
|
3740 |
|
3741 |
|
3742 static FT_Renderer |
|
3743 ft_lookup_glyph_renderer( FT_GlyphSlot slot ) |
|
3744 { |
|
3745 FT_Face face = slot->face; |
|
3746 FT_Library library = FT_FACE_LIBRARY( face ); |
|
3747 FT_Renderer result = library->cur_renderer; |
|
3748 |
|
3749 |
|
3750 if ( !result || result->glyph_format != slot->format ) |
|
3751 result = FT_Lookup_Renderer( library, slot->format, 0 ); |
|
3752 |
|
3753 return result; |
|
3754 } |
|
3755 |
|
3756 |
|
3757 static void |
|
3758 ft_set_current_renderer( FT_Library library ) |
|
3759 { |
|
3760 FT_Renderer renderer; |
|
3761 |
|
3762 |
|
3763 renderer = FT_Lookup_Renderer( library, FT_GLYPH_FORMAT_OUTLINE, 0 ); |
|
3764 library->cur_renderer = renderer; |
|
3765 } |
|
3766 |
|
3767 |
|
3768 static FT_Error |
|
3769 ft_add_renderer( FT_Module module ) |
|
3770 { |
|
3771 FT_Library library = module->library; |
|
3772 FT_Memory memory = library->memory; |
|
3773 FT_Error error; |
|
3774 FT_ListNode node = NULL; |
|
3775 |
|
3776 |
|
3777 if ( FT_NEW( node ) ) |
|
3778 goto Exit; |
|
3779 |
|
3780 { |
|
3781 FT_Renderer render = FT_RENDERER( module ); |
|
3782 FT_Renderer_Class* clazz = (FT_Renderer_Class*)module->clazz; |
|
3783 |
|
3784 |
|
3785 render->clazz = clazz; |
|
3786 render->glyph_format = clazz->glyph_format; |
|
3787 |
|
3788 /* allocate raster object if needed */ |
|
3789 if ( clazz->glyph_format == FT_GLYPH_FORMAT_OUTLINE && |
|
3790 clazz->raster_class->raster_new ) |
|
3791 { |
|
3792 error = clazz->raster_class->raster_new( memory, &render->raster ); |
|
3793 if ( error ) |
|
3794 goto Fail; |
|
3795 |
|
3796 render->raster_render = clazz->raster_class->raster_render; |
|
3797 render->render = clazz->render_glyph; |
|
3798 } |
|
3799 |
|
3800 /* add to list */ |
|
3801 node->data = module; |
|
3802 FT_List_Add( &library->renderers, node ); |
|
3803 |
|
3804 ft_set_current_renderer( library ); |
|
3805 } |
|
3806 |
|
3807 Fail: |
|
3808 if ( error ) |
|
3809 FT_FREE( node ); |
|
3810 |
|
3811 Exit: |
|
3812 return error; |
|
3813 } |
|
3814 |
|
3815 |
|
3816 static void |
|
3817 ft_remove_renderer( FT_Module module ) |
|
3818 { |
|
3819 FT_Library library = module->library; |
|
3820 FT_Memory memory = library->memory; |
|
3821 FT_ListNode node; |
|
3822 |
|
3823 |
|
3824 node = FT_List_Find( &library->renderers, module ); |
|
3825 if ( node ) |
|
3826 { |
|
3827 FT_Renderer render = FT_RENDERER( module ); |
|
3828 |
|
3829 |
|
3830 /* release raster object, if any */ |
|
3831 if ( render->clazz->glyph_format == FT_GLYPH_FORMAT_OUTLINE && |
|
3832 render->raster ) |
|
3833 render->clazz->raster_class->raster_done( render->raster ); |
|
3834 |
|
3835 /* remove from list */ |
|
3836 FT_List_Remove( &library->renderers, node ); |
|
3837 FT_FREE( node ); |
|
3838 |
|
3839 ft_set_current_renderer( library ); |
|
3840 } |
|
3841 } |
|
3842 |
|
3843 |
|
3844 /* documentation is in ftrender.h */ |
|
3845 |
|
3846 FT_EXPORT_DEF( FT_Renderer ) |
|
3847 FT_Get_Renderer( FT_Library library, |
|
3848 FT_Glyph_Format format ) |
|
3849 { |
|
3850 /* test for valid `library' delayed to FT_Lookup_Renderer() */ |
|
3851 |
|
3852 return FT_Lookup_Renderer( library, format, 0 ); |
|
3853 } |
|
3854 |
|
3855 |
|
3856 /* documentation is in ftrender.h */ |
|
3857 |
|
3858 FT_EXPORT_DEF( FT_Error ) |
|
3859 FT_Set_Renderer( FT_Library library, |
|
3860 FT_Renderer renderer, |
|
3861 FT_UInt num_params, |
|
3862 FT_Parameter* parameters ) |
|
3863 { |
|
3864 FT_ListNode node; |
|
3865 FT_Error error = FT_Err_Ok; |
|
3866 |
|
3867 |
|
3868 if ( !library ) |
|
3869 return FT_Err_Invalid_Library_Handle; |
|
3870 |
|
3871 if ( !renderer ) |
|
3872 return FT_Err_Invalid_Argument; |
|
3873 |
|
3874 node = FT_List_Find( &library->renderers, renderer ); |
|
3875 if ( !node ) |
|
3876 { |
|
3877 error = FT_Err_Invalid_Argument; |
|
3878 goto Exit; |
|
3879 } |
|
3880 |
|
3881 FT_List_Up( &library->renderers, node ); |
|
3882 |
|
3883 if ( renderer->glyph_format == FT_GLYPH_FORMAT_OUTLINE ) |
|
3884 library->cur_renderer = renderer; |
|
3885 |
|
3886 if ( num_params > 0 ) |
|
3887 { |
|
3888 FT_Renderer_SetModeFunc set_mode = renderer->clazz->set_mode; |
|
3889 |
|
3890 |
|
3891 for ( ; num_params > 0; num_params-- ) |
|
3892 { |
|
3893 error = set_mode( renderer, parameters->tag, parameters->data ); |
|
3894 if ( error ) |
|
3895 break; |
|
3896 parameters++; |
|
3897 } |
|
3898 } |
|
3899 |
|
3900 Exit: |
|
3901 return error; |
|
3902 } |
|
3903 |
|
3904 |
|
3905 FT_BASE_DEF( FT_Error ) |
|
3906 FT_Render_Glyph_Internal( FT_Library library, |
|
3907 FT_GlyphSlot slot, |
|
3908 FT_Render_Mode render_mode ) |
|
3909 { |
|
3910 FT_Error error = FT_Err_Ok; |
|
3911 FT_Renderer renderer; |
|
3912 |
|
3913 |
|
3914 /* if it is already a bitmap, no need to do anything */ |
|
3915 switch ( slot->format ) |
|
3916 { |
|
3917 case FT_GLYPH_FORMAT_BITMAP: /* already a bitmap, don't do anything */ |
|
3918 break; |
|
3919 |
|
3920 default: |
|
3921 { |
|
3922 FT_ListNode node = 0; |
|
3923 FT_Bool update = 0; |
|
3924 |
|
3925 |
|
3926 /* small shortcut for the very common case */ |
|
3927 if ( slot->format == FT_GLYPH_FORMAT_OUTLINE ) |
|
3928 { |
|
3929 renderer = library->cur_renderer; |
|
3930 node = library->renderers.head; |
|
3931 } |
|
3932 else |
|
3933 renderer = FT_Lookup_Renderer( library, slot->format, &node ); |
|
3934 |
|
3935 error = FT_Err_Unimplemented_Feature; |
|
3936 while ( renderer ) |
|
3937 { |
|
3938 error = renderer->render( renderer, slot, render_mode, NULL ); |
|
3939 if ( !error || |
|
3940 FT_ERROR_BASE( error ) != FT_Err_Cannot_Render_Glyph ) |
|
3941 break; |
|
3942 |
|
3943 /* FT_Err_Cannot_Render_Glyph is returned if the render mode */ |
|
3944 /* is unsupported by the current renderer for this glyph image */ |
|
3945 /* format. */ |
|
3946 |
|
3947 /* now, look for another renderer that supports the same */ |
|
3948 /* format. */ |
|
3949 renderer = FT_Lookup_Renderer( library, slot->format, &node ); |
|
3950 update = 1; |
|
3951 } |
|
3952 |
|
3953 /* if we changed the current renderer for the glyph image format */ |
|
3954 /* we need to select it as the next current one */ |
|
3955 if ( !error && update && renderer ) |
|
3956 FT_Set_Renderer( library, renderer, 0, 0 ); |
|
3957 } |
|
3958 } |
|
3959 |
|
3960 return error; |
|
3961 } |
|
3962 |
|
3963 |
|
3964 /* documentation is in freetype.h */ |
|
3965 |
|
3966 FT_EXPORT_DEF( FT_Error ) |
|
3967 FT_Render_Glyph( FT_GlyphSlot slot, |
|
3968 FT_Render_Mode render_mode ) |
|
3969 { |
|
3970 FT_Library library; |
|
3971 |
|
3972 |
|
3973 if ( !slot || !slot->face ) |
|
3974 return FT_Err_Invalid_Argument; |
|
3975 |
|
3976 library = FT_FACE_LIBRARY( slot->face ); |
|
3977 |
|
3978 return FT_Render_Glyph_Internal( library, slot, render_mode ); |
|
3979 } |
|
3980 |
|
3981 |
|
3982 /*************************************************************************/ |
|
3983 /*************************************************************************/ |
|
3984 /*************************************************************************/ |
|
3985 /**** ****/ |
|
3986 /**** ****/ |
|
3987 /**** M O D U L E S ****/ |
|
3988 /**** ****/ |
|
3989 /**** ****/ |
|
3990 /*************************************************************************/ |
|
3991 /*************************************************************************/ |
|
3992 /*************************************************************************/ |
|
3993 |
|
3994 |
|
3995 /*************************************************************************/ |
|
3996 /* */ |
|
3997 /* <Function> */ |
|
3998 /* Destroy_Module */ |
|
3999 /* */ |
|
4000 /* <Description> */ |
|
4001 /* Destroys a given module object. For drivers, this also destroys */ |
|
4002 /* all child faces. */ |
|
4003 /* */ |
|
4004 /* <InOut> */ |
|
4005 /* module :: A handle to the target driver object. */ |
|
4006 /* */ |
|
4007 /* <Note> */ |
|
4008 /* The driver _must_ be LOCKED! */ |
|
4009 /* */ |
|
4010 static void |
|
4011 Destroy_Module( FT_Module module ) |
|
4012 { |
|
4013 FT_Memory memory = module->memory; |
|
4014 FT_Module_Class* clazz = module->clazz; |
|
4015 FT_Library library = module->library; |
|
4016 |
|
4017 |
|
4018 /* finalize client-data - before anything else */ |
|
4019 if ( module->generic.finalizer ) |
|
4020 module->generic.finalizer( module ); |
|
4021 |
|
4022 if ( library && library->auto_hinter == module ) |
|
4023 library->auto_hinter = 0; |
|
4024 |
|
4025 /* if the module is a renderer */ |
|
4026 if ( FT_MODULE_IS_RENDERER( module ) ) |
|
4027 ft_remove_renderer( module ); |
|
4028 |
|
4029 /* if the module is a font driver, add some steps */ |
|
4030 if ( FT_MODULE_IS_DRIVER( module ) ) |
|
4031 Destroy_Driver( FT_DRIVER( module ) ); |
|
4032 |
|
4033 /* finalize the module object */ |
|
4034 if ( clazz->module_done ) |
|
4035 clazz->module_done( module ); |
|
4036 |
|
4037 /* discard it */ |
|
4038 FT_FREE( module ); |
|
4039 } |
|
4040 |
|
4041 |
|
4042 /* documentation is in ftmodapi.h */ |
|
4043 |
|
4044 FT_EXPORT_DEF( FT_Error ) |
|
4045 FT_Add_Module( FT_Library library, |
|
4046 const FT_Module_Class* clazz ) |
|
4047 { |
|
4048 FT_Error error; |
|
4049 FT_Memory memory; |
|
4050 FT_Module module; |
|
4051 FT_UInt nn; |
|
4052 |
|
4053 |
|
4054 #define FREETYPE_VER_FIXED ( ( (FT_Long)FREETYPE_MAJOR << 16 ) | \ |
|
4055 FREETYPE_MINOR ) |
|
4056 |
|
4057 if ( !library ) |
|
4058 return FT_Err_Invalid_Library_Handle; |
|
4059 |
|
4060 if ( !clazz ) |
|
4061 return FT_Err_Invalid_Argument; |
|
4062 |
|
4063 /* check freetype version */ |
|
4064 if ( clazz->module_requires > FREETYPE_VER_FIXED ) |
|
4065 return FT_Err_Invalid_Version; |
|
4066 |
|
4067 /* look for a module with the same name in the library's table */ |
|
4068 for ( nn = 0; nn < library->num_modules; nn++ ) |
|
4069 { |
|
4070 module = library->modules[nn]; |
|
4071 if ( ft_strcmp( module->clazz->module_name, clazz->module_name ) == 0 ) |
|
4072 { |
|
4073 /* this installed module has the same name, compare their versions */ |
|
4074 if ( clazz->module_version <= module->clazz->module_version ) |
|
4075 return FT_Err_Lower_Module_Version; |
|
4076 |
|
4077 /* remove the module from our list, then exit the loop to replace */ |
|
4078 /* it by our new version.. */ |
|
4079 FT_Remove_Module( library, module ); |
|
4080 break; |
|
4081 } |
|
4082 } |
|
4083 |
|
4084 memory = library->memory; |
|
4085 error = FT_Err_Ok; |
|
4086 |
|
4087 if ( library->num_modules >= FT_MAX_MODULES ) |
|
4088 { |
|
4089 error = FT_Err_Too_Many_Drivers; |
|
4090 goto Exit; |
|
4091 } |
|
4092 |
|
4093 /* allocate module object */ |
|
4094 if ( FT_ALLOC( module, clazz->module_size ) ) |
|
4095 goto Exit; |
|
4096 |
|
4097 /* base initialization */ |
|
4098 module->library = library; |
|
4099 module->memory = memory; |
|
4100 module->clazz = (FT_Module_Class*)clazz; |
|
4101 |
|
4102 /* check whether the module is a renderer - this must be performed */ |
|
4103 /* before the normal module initialization */ |
|
4104 if ( FT_MODULE_IS_RENDERER( module ) ) |
|
4105 { |
|
4106 /* add to the renderers list */ |
|
4107 error = ft_add_renderer( module ); |
|
4108 if ( error ) |
|
4109 goto Fail; |
|
4110 } |
|
4111 |
|
4112 /* is the module a auto-hinter? */ |
|
4113 if ( FT_MODULE_IS_HINTER( module ) ) |
|
4114 library->auto_hinter = module; |
|
4115 |
|
4116 /* if the module is a font driver */ |
|
4117 if ( FT_MODULE_IS_DRIVER( module ) ) |
|
4118 { |
|
4119 /* allocate glyph loader if needed */ |
|
4120 FT_Driver driver = FT_DRIVER( module ); |
|
4121 |
|
4122 |
|
4123 driver->clazz = (FT_Driver_Class)module->clazz; |
|
4124 if ( FT_DRIVER_USES_OUTLINES( driver ) ) |
|
4125 { |
|
4126 error = FT_GlyphLoader_New( memory, &driver->glyph_loader ); |
|
4127 if ( error ) |
|
4128 goto Fail; |
|
4129 } |
|
4130 } |
|
4131 |
|
4132 if ( clazz->module_init ) |
|
4133 { |
|
4134 error = clazz->module_init( module ); |
|
4135 if ( error ) |
|
4136 goto Fail; |
|
4137 } |
|
4138 |
|
4139 /* add module to the library's table */ |
|
4140 library->modules[library->num_modules++] = module; |
|
4141 |
|
4142 Exit: |
|
4143 return error; |
|
4144 |
|
4145 Fail: |
|
4146 if ( FT_MODULE_IS_DRIVER( module ) ) |
|
4147 { |
|
4148 FT_Driver driver = FT_DRIVER( module ); |
|
4149 |
|
4150 |
|
4151 if ( FT_DRIVER_USES_OUTLINES( driver ) ) |
|
4152 FT_GlyphLoader_Done( driver->glyph_loader ); |
|
4153 } |
|
4154 |
|
4155 if ( FT_MODULE_IS_RENDERER( module ) ) |
|
4156 { |
|
4157 FT_Renderer renderer = FT_RENDERER( module ); |
|
4158 |
|
4159 |
|
4160 if ( renderer->clazz->glyph_format == FT_GLYPH_FORMAT_OUTLINE && |
|
4161 renderer->raster ) |
|
4162 renderer->clazz->raster_class->raster_done( renderer->raster ); |
|
4163 } |
|
4164 |
|
4165 FT_FREE( module ); |
|
4166 goto Exit; |
|
4167 } |
|
4168 |
|
4169 |
|
4170 /* documentation is in ftmodapi.h */ |
|
4171 |
|
4172 FT_EXPORT_DEF( FT_Module ) |
|
4173 FT_Get_Module( FT_Library library, |
|
4174 const char* module_name ) |
|
4175 { |
|
4176 FT_Module result = 0; |
|
4177 FT_Module* cur; |
|
4178 FT_Module* limit; |
|
4179 |
|
4180 |
|
4181 if ( !library || !module_name ) |
|
4182 return result; |
|
4183 |
|
4184 cur = library->modules; |
|
4185 limit = cur + library->num_modules; |
|
4186 |
|
4187 for ( ; cur < limit; cur++ ) |
|
4188 if ( ft_strcmp( cur[0]->clazz->module_name, module_name ) == 0 ) |
|
4189 { |
|
4190 result = cur[0]; |
|
4191 break; |
|
4192 } |
|
4193 |
|
4194 return result; |
|
4195 } |
|
4196 |
|
4197 |
|
4198 /* documentation is in ftobjs.h */ |
|
4199 |
|
4200 FT_BASE_DEF( const void* ) |
|
4201 FT_Get_Module_Interface( FT_Library library, |
|
4202 const char* mod_name ) |
|
4203 { |
|
4204 FT_Module module; |
|
4205 |
|
4206 |
|
4207 /* test for valid `library' delayed to FT_Get_Module() */ |
|
4208 |
|
4209 module = FT_Get_Module( library, mod_name ); |
|
4210 |
|
4211 return module ? module->clazz->module_interface : 0; |
|
4212 } |
|
4213 |
|
4214 |
|
4215 FT_BASE_DEF( FT_Pointer ) |
|
4216 ft_module_get_service( FT_Module module, |
|
4217 const char* service_id ) |
|
4218 { |
|
4219 FT_Pointer result = NULL; |
|
4220 |
|
4221 if ( module ) |
|
4222 { |
|
4223 FT_ASSERT( module->clazz && module->clazz->get_interface ); |
|
4224 |
|
4225 /* first, look for the service in the module |
|
4226 */ |
|
4227 if ( module->clazz->get_interface ) |
|
4228 result = module->clazz->get_interface( module, service_id ); |
|
4229 |
|
4230 if ( result == NULL ) |
|
4231 { |
|
4232 /* we didn't find it, look in all other modules then |
|
4233 */ |
|
4234 FT_Library library = module->library; |
|
4235 FT_Module* cur = library->modules; |
|
4236 FT_Module* limit = cur + library->num_modules; |
|
4237 |
|
4238 for ( ; cur < limit; cur++ ) |
|
4239 { |
|
4240 if ( cur[0] != module ) |
|
4241 { |
|
4242 FT_ASSERT( cur[0]->clazz ); |
|
4243 |
|
4244 if ( cur[0]->clazz->get_interface ) |
|
4245 { |
|
4246 result = cur[0]->clazz->get_interface( cur[0], service_id ); |
|
4247 if ( result != NULL ) |
|
4248 break; |
|
4249 } |
|
4250 } |
|
4251 } |
|
4252 } |
|
4253 } |
|
4254 |
|
4255 return result; |
|
4256 } |
|
4257 |
|
4258 |
|
4259 /* documentation is in ftmodapi.h */ |
|
4260 |
|
4261 FT_EXPORT_DEF( FT_Error ) |
|
4262 FT_Remove_Module( FT_Library library, |
|
4263 FT_Module module ) |
|
4264 { |
|
4265 /* try to find the module from the table, then remove it from there */ |
|
4266 |
|
4267 if ( !library ) |
|
4268 return FT_Err_Invalid_Library_Handle; |
|
4269 |
|
4270 if ( module ) |
|
4271 { |
|
4272 FT_Module* cur = library->modules; |
|
4273 FT_Module* limit = cur + library->num_modules; |
|
4274 |
|
4275 |
|
4276 for ( ; cur < limit; cur++ ) |
|
4277 { |
|
4278 if ( cur[0] == module ) |
|
4279 { |
|
4280 /* remove it from the table */ |
|
4281 library->num_modules--; |
|
4282 limit--; |
|
4283 while ( cur < limit ) |
|
4284 { |
|
4285 cur[0] = cur[1]; |
|
4286 cur++; |
|
4287 } |
|
4288 limit[0] = 0; |
|
4289 |
|
4290 /* destroy the module */ |
|
4291 Destroy_Module( module ); |
|
4292 |
|
4293 return FT_Err_Ok; |
|
4294 } |
|
4295 } |
|
4296 } |
|
4297 return FT_Err_Invalid_Driver_Handle; |
|
4298 } |
|
4299 |
|
4300 |
|
4301 /*************************************************************************/ |
|
4302 /*************************************************************************/ |
|
4303 /*************************************************************************/ |
|
4304 /**** ****/ |
|
4305 /**** ****/ |
|
4306 /**** L I B R A R Y ****/ |
|
4307 /**** ****/ |
|
4308 /**** ****/ |
|
4309 /*************************************************************************/ |
|
4310 /*************************************************************************/ |
|
4311 /*************************************************************************/ |
|
4312 |
|
4313 |
|
4314 /* documentation is in ftmodapi.h */ |
|
4315 |
|
4316 FT_EXPORT_DEF( FT_Error ) |
|
4317 FT_Reference_Library( FT_Library library ) |
|
4318 { |
|
4319 library->refcount++; |
|
4320 |
|
4321 return FT_Err_Ok; |
|
4322 } |
|
4323 |
|
4324 |
|
4325 /* documentation is in ftmodapi.h */ |
|
4326 |
|
4327 FT_EXPORT_DEF( FT_Error ) |
|
4328 FT_New_Library( FT_Memory memory, |
|
4329 FT_Library *alibrary ) |
|
4330 { |
|
4331 FT_Library library = NULL; |
|
4332 FT_Error error; |
|
4333 |
|
4334 |
|
4335 if ( !memory ) |
|
4336 return FT_Err_Invalid_Argument; |
|
4337 |
|
4338 #ifdef FT_DEBUG_LEVEL_ERROR |
|
4339 /* init debugging support */ |
|
4340 ft_debug_init(); |
|
4341 #endif |
|
4342 |
|
4343 /* first of all, allocate the library object */ |
|
4344 if ( FT_NEW( library ) ) |
|
4345 return error; |
|
4346 |
|
4347 library->memory = memory; |
|
4348 |
|
4349 #ifdef FT_CONFIG_OPTION_PIC |
|
4350 /* initialize position independent code containers */ |
|
4351 error = ft_pic_container_init( library ); |
|
4352 if ( error ) |
|
4353 goto Fail; |
|
4354 #endif |
|
4355 |
|
4356 /* allocate the render pool */ |
|
4357 library->raster_pool_size = FT_RENDER_POOL_SIZE; |
|
4358 #if FT_RENDER_POOL_SIZE > 0 |
|
4359 if ( FT_ALLOC( library->raster_pool, FT_RENDER_POOL_SIZE ) ) |
|
4360 goto Fail; |
|
4361 #endif |
|
4362 |
|
4363 library->version_major = FREETYPE_MAJOR; |
|
4364 library->version_minor = FREETYPE_MINOR; |
|
4365 library->version_patch = FREETYPE_PATCH; |
|
4366 |
|
4367 library->refcount = 1; |
|
4368 |
|
4369 /* That's ok now */ |
|
4370 *alibrary = library; |
|
4371 |
|
4372 return FT_Err_Ok; |
|
4373 |
|
4374 Fail: |
|
4375 #ifdef FT_CONFIG_OPTION_PIC |
|
4376 ft_pic_container_destroy( library ); |
|
4377 #endif |
|
4378 FT_FREE( library ); |
|
4379 return error; |
|
4380 } |
|
4381 |
|
4382 |
|
4383 /* documentation is in freetype.h */ |
|
4384 |
|
4385 FT_EXPORT_DEF( void ) |
|
4386 FT_Library_Version( FT_Library library, |
|
4387 FT_Int *amajor, |
|
4388 FT_Int *aminor, |
|
4389 FT_Int *apatch ) |
|
4390 { |
|
4391 FT_Int major = 0; |
|
4392 FT_Int minor = 0; |
|
4393 FT_Int patch = 0; |
|
4394 |
|
4395 |
|
4396 if ( library ) |
|
4397 { |
|
4398 major = library->version_major; |
|
4399 minor = library->version_minor; |
|
4400 patch = library->version_patch; |
|
4401 } |
|
4402 |
|
4403 if ( amajor ) |
|
4404 *amajor = major; |
|
4405 |
|
4406 if ( aminor ) |
|
4407 *aminor = minor; |
|
4408 |
|
4409 if ( apatch ) |
|
4410 *apatch = patch; |
|
4411 } |
|
4412 |
|
4413 |
|
4414 /* documentation is in ftmodapi.h */ |
|
4415 |
|
4416 FT_EXPORT_DEF( FT_Error ) |
|
4417 FT_Done_Library( FT_Library library ) |
|
4418 { |
|
4419 FT_Memory memory; |
|
4420 |
|
4421 |
|
4422 if ( !library ) |
|
4423 return FT_Err_Invalid_Library_Handle; |
|
4424 |
|
4425 library->refcount--; |
|
4426 if ( library->refcount > 0 ) |
|
4427 goto Exit; |
|
4428 |
|
4429 memory = library->memory; |
|
4430 |
|
4431 /* Discard client-data */ |
|
4432 if ( library->generic.finalizer ) |
|
4433 library->generic.finalizer( library ); |
|
4434 |
|
4435 /* |
|
4436 * Close all faces in the library. If we don't do this, we can have |
|
4437 * some subtle memory leaks. |
|
4438 * |
|
4439 * Example: |
|
4440 * |
|
4441 * - the cff font driver uses the pshinter module in cff_size_done |
|
4442 * - if the pshinter module is destroyed before the cff font driver, |
|
4443 * opened FT_Face objects managed by the driver are not properly |
|
4444 * destroyed, resulting in a memory leak |
|
4445 * |
|
4446 * Some faces are dependent on other faces, like Type42 faces that |
|
4447 * depend on TrueType faces synthesized internally. |
|
4448 * |
|
4449 * The order of drivers should be specified in driver_name[]. |
|
4450 */ |
|
4451 { |
|
4452 FT_UInt m, n; |
|
4453 const char* driver_name[] = { "type42", NULL }; |
|
4454 |
|
4455 |
|
4456 for ( m = 0; |
|
4457 m < sizeof ( driver_name ) / sizeof ( driver_name[0] ); |
|
4458 m++ ) |
|
4459 { |
|
4460 for ( n = 0; n < library->num_modules; n++ ) |
|
4461 { |
|
4462 FT_Module module = library->modules[n]; |
|
4463 const char* module_name = module->clazz->module_name; |
|
4464 FT_List faces; |
|
4465 |
|
4466 |
|
4467 if ( driver_name[m] && |
|
4468 ft_strcmp( module_name, driver_name[m] ) != 0 ) |
|
4469 continue; |
|
4470 |
|
4471 if ( ( module->clazz->module_flags & FT_MODULE_FONT_DRIVER ) == 0 ) |
|
4472 continue; |
|
4473 |
|
4474 FT_TRACE7(( "FT_Done_Library: close faces for %s\n", module_name )); |
|
4475 |
|
4476 faces = &FT_DRIVER( module )->faces_list; |
|
4477 while ( faces->head ) |
|
4478 { |
|
4479 FT_Done_Face( FT_FACE( faces->head->data ) ); |
|
4480 if ( faces->head ) |
|
4481 FT_TRACE0(( "FT_Done_Library: failed to free some faces\n" )); |
|
4482 } |
|
4483 } |
|
4484 } |
|
4485 } |
|
4486 |
|
4487 /* Close all other modules in the library */ |
|
4488 #if 1 |
|
4489 /* XXX Modules are removed in the reversed order so that */ |
|
4490 /* type42 module is removed before truetype module. This */ |
|
4491 /* avoids double free in some occasions. It is a hack. */ |
|
4492 while ( library->num_modules > 0 ) |
|
4493 FT_Remove_Module( library, |
|
4494 library->modules[library->num_modules - 1] ); |
|
4495 #else |
|
4496 { |
|
4497 FT_UInt n; |
|
4498 |
|
4499 |
|
4500 for ( n = 0; n < library->num_modules; n++ ) |
|
4501 { |
|
4502 FT_Module module = library->modules[n]; |
|
4503 |
|
4504 |
|
4505 if ( module ) |
|
4506 { |
|
4507 Destroy_Module( module ); |
|
4508 library->modules[n] = 0; |
|
4509 } |
|
4510 } |
|
4511 } |
|
4512 #endif |
|
4513 |
|
4514 /* Destroy raster objects */ |
|
4515 FT_FREE( library->raster_pool ); |
|
4516 library->raster_pool_size = 0; |
|
4517 |
|
4518 #ifdef FT_CONFIG_OPTION_PIC |
|
4519 /* Destroy pic container contents */ |
|
4520 ft_pic_container_destroy( library ); |
|
4521 #endif |
|
4522 |
|
4523 FT_FREE( library ); |
|
4524 |
|
4525 Exit: |
|
4526 return FT_Err_Ok; |
|
4527 } |
|
4528 |
|
4529 |
|
4530 /* documentation is in ftmodapi.h */ |
|
4531 |
|
4532 FT_EXPORT_DEF( void ) |
|
4533 FT_Set_Debug_Hook( FT_Library library, |
|
4534 FT_UInt hook_index, |
|
4535 FT_DebugHook_Func debug_hook ) |
|
4536 { |
|
4537 if ( library && debug_hook && |
|
4538 hook_index < |
|
4539 ( sizeof ( library->debug_hooks ) / sizeof ( void* ) ) ) |
|
4540 library->debug_hooks[hook_index] = debug_hook; |
|
4541 } |
|
4542 |
|
4543 |
|
4544 /* documentation is in ftmodapi.h */ |
|
4545 |
|
4546 FT_EXPORT_DEF( FT_TrueTypeEngineType ) |
|
4547 FT_Get_TrueType_Engine_Type( FT_Library library ) |
|
4548 { |
|
4549 FT_TrueTypeEngineType result = FT_TRUETYPE_ENGINE_TYPE_NONE; |
|
4550 |
|
4551 |
|
4552 if ( library ) |
|
4553 { |
|
4554 FT_Module module = FT_Get_Module( library, "truetype" ); |
|
4555 |
|
4556 |
|
4557 if ( module ) |
|
4558 { |
|
4559 FT_Service_TrueTypeEngine service; |
|
4560 |
|
4561 |
|
4562 service = (FT_Service_TrueTypeEngine) |
|
4563 ft_module_get_service( module, |
|
4564 FT_SERVICE_ID_TRUETYPE_ENGINE ); |
|
4565 if ( service ) |
|
4566 result = service->engine_type; |
|
4567 } |
|
4568 } |
|
4569 |
|
4570 return result; |
|
4571 } |
|
4572 |
|
4573 |
|
4574 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS |
|
4575 |
|
4576 FT_BASE_DEF( FT_Error ) |
|
4577 ft_stub_set_char_sizes( FT_Size size, |
|
4578 FT_F26Dot6 width, |
|
4579 FT_F26Dot6 height, |
|
4580 FT_UInt horz_res, |
|
4581 FT_UInt vert_res ) |
|
4582 { |
|
4583 FT_Size_RequestRec req; |
|
4584 FT_Driver driver = size->face->driver; |
|
4585 |
|
4586 |
|
4587 if ( driver->clazz->request_size ) |
|
4588 { |
|
4589 req.type = FT_SIZE_REQUEST_TYPE_NOMINAL; |
|
4590 req.width = width; |
|
4591 req.height = height; |
|
4592 |
|
4593 if ( horz_res == 0 ) |
|
4594 horz_res = vert_res; |
|
4595 |
|
4596 if ( vert_res == 0 ) |
|
4597 vert_res = horz_res; |
|
4598 |
|
4599 if ( horz_res == 0 ) |
|
4600 horz_res = vert_res = 72; |
|
4601 |
|
4602 req.horiResolution = horz_res; |
|
4603 req.vertResolution = vert_res; |
|
4604 |
|
4605 return driver->clazz->request_size( size, &req ); |
|
4606 } |
|
4607 |
|
4608 return 0; |
|
4609 } |
|
4610 |
|
4611 |
|
4612 FT_BASE_DEF( FT_Error ) |
|
4613 ft_stub_set_pixel_sizes( FT_Size size, |
|
4614 FT_UInt width, |
|
4615 FT_UInt height ) |
|
4616 { |
|
4617 FT_Size_RequestRec req; |
|
4618 FT_Driver driver = size->face->driver; |
|
4619 |
|
4620 |
|
4621 if ( driver->clazz->request_size ) |
|
4622 { |
|
4623 req.type = FT_SIZE_REQUEST_TYPE_NOMINAL; |
|
4624 req.width = width << 6; |
|
4625 req.height = height << 6; |
|
4626 req.horiResolution = 0; |
|
4627 req.vertResolution = 0; |
|
4628 |
|
4629 return driver->clazz->request_size( size, &req ); |
|
4630 } |
|
4631 |
|
4632 return 0; |
|
4633 } |
|
4634 |
|
4635 #endif /* FT_CONFIG_OPTION_OLD_INTERNALS */ |
|
4636 |
|
4637 |
|
4638 /* documentation is in freetype.h */ |
|
4639 |
|
4640 FT_EXPORT_DEF( FT_Error ) |
|
4641 FT_Get_SubGlyph_Info( FT_GlyphSlot glyph, |
|
4642 FT_UInt sub_index, |
|
4643 FT_Int *p_index, |
|
4644 FT_UInt *p_flags, |
|
4645 FT_Int *p_arg1, |
|
4646 FT_Int *p_arg2, |
|
4647 FT_Matrix *p_transform ) |
|
4648 { |
|
4649 FT_Error error = FT_Err_Invalid_Argument; |
|
4650 |
|
4651 |
|
4652 if ( glyph && |
|
4653 glyph->subglyphs && |
|
4654 glyph->format == FT_GLYPH_FORMAT_COMPOSITE && |
|
4655 sub_index < glyph->num_subglyphs ) |
|
4656 { |
|
4657 FT_SubGlyph subg = glyph->subglyphs + sub_index; |
|
4658 |
|
4659 |
|
4660 *p_index = subg->index; |
|
4661 *p_flags = subg->flags; |
|
4662 *p_arg1 = subg->arg1; |
|
4663 *p_arg2 = subg->arg2; |
|
4664 *p_transform = subg->transform; |
|
4665 } |
|
4666 |
|
4667 return error; |
|
4668 } |
|
4669 |
|
4670 |
|
4671 /* END */ |