1 /***************************************************************************/ |
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2 /* */ |
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3 /* t42drivr.c */ |
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4 /* */ |
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5 /* High-level Type 42 driver interface (body). */ |
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6 /* */ |
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7 /* Copyright 2002, 2003, 2004, 2006, 2007, 2009 by Roberto Alameda. */ |
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8 /* */ |
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9 /* This file is part of the FreeType project, and may only be used, */ |
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10 /* modified, and distributed under the terms of the FreeType project */ |
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11 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
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12 /* this file you indicate that you have read the license and */ |
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13 /* understand and accept it fully. */ |
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14 /* */ |
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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 /* */ |
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20 /* This driver implements Type42 fonts as described in the */ |
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21 /* Technical Note #5012 from Adobe, with these limitations: */ |
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22 /* */ |
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23 /* 1) CID Fonts are not currently supported. */ |
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24 /* 2) Incremental fonts making use of the GlyphDirectory keyword */ |
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25 /* will be loaded, but the rendering will be using the TrueType */ |
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26 /* tables. */ |
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27 /* 3) As for Type1 fonts, CDevProc is not supported. */ |
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28 /* 4) The Metrics dictionary is not supported. */ |
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29 /* 5) AFM metrics are not supported. */ |
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30 /* */ |
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31 /* In other words, this driver supports Type42 fonts derived from */ |
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32 /* TrueType fonts in a non-CID manner, as done by usual conversion */ |
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33 /* programs. */ |
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34 /* */ |
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35 /*************************************************************************/ |
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36 |
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37 |
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38 #include "t42drivr.h" |
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39 #include "t42objs.h" |
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40 #include "t42error.h" |
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41 #include FT_INTERNAL_DEBUG_H |
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42 |
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43 #include FT_SERVICE_XFREE86_NAME_H |
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44 #include FT_SERVICE_GLYPH_DICT_H |
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45 #include FT_SERVICE_POSTSCRIPT_NAME_H |
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46 #include FT_SERVICE_POSTSCRIPT_INFO_H |
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47 |
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48 #undef FT_COMPONENT |
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49 #define FT_COMPONENT trace_t42 |
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50 |
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51 |
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52 /* |
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53 * |
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54 * GLYPH DICT SERVICE |
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55 * |
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56 */ |
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57 |
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58 static FT_Error |
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59 t42_get_glyph_name( T42_Face face, |
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60 FT_UInt glyph_index, |
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61 FT_Pointer buffer, |
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62 FT_UInt buffer_max ) |
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63 { |
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64 FT_STRCPYN( buffer, face->type1.glyph_names[glyph_index], buffer_max ); |
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65 |
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66 return T42_Err_Ok; |
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67 } |
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68 |
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69 |
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70 static FT_UInt |
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71 t42_get_name_index( T42_Face face, |
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72 FT_String* glyph_name ) |
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73 { |
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74 FT_Int i; |
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75 FT_String* gname; |
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76 |
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77 |
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78 for ( i = 0; i < face->type1.num_glyphs; i++ ) |
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79 { |
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80 gname = face->type1.glyph_names[i]; |
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81 |
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82 if ( glyph_name[0] == gname[0] && !ft_strcmp( glyph_name, gname ) ) |
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83 return (FT_UInt)ft_atol( (const char *)face->type1.charstrings[i] ); |
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84 } |
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85 |
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86 return 0; |
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87 } |
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88 |
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89 |
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90 static const FT_Service_GlyphDictRec t42_service_glyph_dict = |
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91 { |
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92 (FT_GlyphDict_GetNameFunc) t42_get_glyph_name, |
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93 (FT_GlyphDict_NameIndexFunc)t42_get_name_index |
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94 }; |
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95 |
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96 |
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97 /* |
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98 * |
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99 * POSTSCRIPT NAME SERVICE |
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100 * |
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101 */ |
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102 |
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103 static const char* |
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104 t42_get_ps_font_name( T42_Face face ) |
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105 { |
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106 return (const char*)face->type1.font_name; |
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107 } |
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108 |
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109 |
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110 static const FT_Service_PsFontNameRec t42_service_ps_font_name = |
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111 { |
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112 (FT_PsName_GetFunc)t42_get_ps_font_name |
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113 }; |
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114 |
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115 |
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116 /* |
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117 * |
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118 * POSTSCRIPT INFO SERVICE |
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119 * |
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120 */ |
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121 |
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122 static FT_Error |
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123 t42_ps_get_font_info( FT_Face face, |
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124 PS_FontInfoRec* afont_info ) |
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125 { |
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126 *afont_info = ((T42_Face)face)->type1.font_info; |
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127 |
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128 return T42_Err_Ok; |
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129 } |
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130 |
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131 |
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132 static FT_Error |
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133 t42_ps_get_font_extra( FT_Face face, |
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134 PS_FontExtraRec* afont_extra ) |
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135 { |
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136 *afont_extra = ((T42_Face)face)->type1.font_extra; |
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137 |
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138 return T42_Err_Ok; |
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139 } |
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140 |
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141 |
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142 static FT_Int |
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143 t42_ps_has_glyph_names( FT_Face face ) |
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144 { |
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145 FT_UNUSED( face ); |
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146 |
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147 return 1; |
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148 } |
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149 |
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150 |
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151 static FT_Error |
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152 t42_ps_get_font_private( FT_Face face, |
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153 PS_PrivateRec* afont_private ) |
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154 { |
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155 *afont_private = ((T42_Face)face)->type1.private_dict; |
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156 |
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157 return T42_Err_Ok; |
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158 } |
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159 |
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160 |
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161 static const FT_Service_PsInfoRec t42_service_ps_info = |
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162 { |
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163 (PS_GetFontInfoFunc) t42_ps_get_font_info, |
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164 (PS_GetFontExtraFunc) t42_ps_get_font_extra, |
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165 (PS_HasGlyphNamesFunc) t42_ps_has_glyph_names, |
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166 (PS_GetFontPrivateFunc)t42_ps_get_font_private |
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167 }; |
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168 |
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169 |
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170 /* |
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171 * |
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172 * SERVICE LIST |
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173 * |
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174 */ |
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175 |
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176 static const FT_ServiceDescRec t42_services[] = |
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177 { |
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178 { FT_SERVICE_ID_GLYPH_DICT, &t42_service_glyph_dict }, |
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179 { FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &t42_service_ps_font_name }, |
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180 { FT_SERVICE_ID_POSTSCRIPT_INFO, &t42_service_ps_info }, |
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181 { FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_TYPE_42 }, |
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182 { NULL, NULL } |
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183 }; |
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184 |
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185 |
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186 static FT_Module_Interface |
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187 T42_Get_Interface( FT_Driver driver, |
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188 const FT_String* t42_interface ) |
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189 { |
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190 FT_UNUSED( driver ); |
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191 |
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192 return ft_service_list_lookup( t42_services, t42_interface ); |
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193 } |
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194 |
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195 |
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196 const FT_Driver_ClassRec t42_driver_class = |
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197 { |
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198 { |
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199 FT_MODULE_FONT_DRIVER | |
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200 FT_MODULE_DRIVER_SCALABLE | |
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201 #ifdef TT_USE_BYTECODE_INTERPRETER |
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202 FT_MODULE_DRIVER_HAS_HINTER, |
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203 #else |
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204 0, |
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205 #endif |
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206 |
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207 sizeof ( T42_DriverRec ), |
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208 |
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209 "type42", |
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210 0x10000L, |
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211 0x20000L, |
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212 |
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213 0, /* format interface */ |
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214 |
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215 (FT_Module_Constructor)T42_Driver_Init, |
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216 (FT_Module_Destructor) T42_Driver_Done, |
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217 (FT_Module_Requester) T42_Get_Interface, |
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218 }, |
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219 |
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220 sizeof ( T42_FaceRec ), |
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221 sizeof ( T42_SizeRec ), |
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222 sizeof ( T42_GlyphSlotRec ), |
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223 |
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224 (FT_Face_InitFunc) T42_Face_Init, |
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225 (FT_Face_DoneFunc) T42_Face_Done, |
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226 (FT_Size_InitFunc) T42_Size_Init, |
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227 (FT_Size_DoneFunc) T42_Size_Done, |
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228 (FT_Slot_InitFunc) T42_GlyphSlot_Init, |
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229 (FT_Slot_DoneFunc) T42_GlyphSlot_Done, |
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230 |
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231 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS |
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232 ft_stub_set_char_sizes, |
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233 ft_stub_set_pixel_sizes, |
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234 #endif |
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235 (FT_Slot_LoadFunc) T42_GlyphSlot_Load, |
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236 |
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237 (FT_Face_GetKerningFunc) 0, |
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238 (FT_Face_AttachFunc) 0, |
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239 |
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240 (FT_Face_GetAdvancesFunc) 0, |
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241 (FT_Size_RequestFunc) T42_Size_Request, |
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242 (FT_Size_SelectFunc) T42_Size_Select |
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243 }; |
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244 |
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245 |
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246 /* END */ |
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