1 /***************************************************************************/ 2 /* */ 3 /* t42drivr.c */ 4 /* */ 5 /* High-level Type 42 driver interface (body). */ 6 /* */ 7 /* Copyright 2002-2004, 2006, 2007, 2009, 2011, 2013 by */ 8 /* Roberto Alameda. */ 9 /* */ 10 /* This file is part of the FreeType project, and may only be used, */ 11 /* modified, and distributed under the terms of the FreeType project */ 12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ 13 /* this file you indicate that you have read the license and */ 14 /* understand and accept it fully. */ 15 /* */ 16 /***************************************************************************/ 17 18 19 /*************************************************************************/ 20 /* */ 21 /* This driver implements Type42 fonts as described in the */ 22 /* Technical Note #5012 from Adobe, with these limitations: */ 23 /* */ 24 /* 1) CID Fonts are not currently supported. */ 25 /* 2) Incremental fonts making use of the GlyphDirectory keyword */ 26 /* will be loaded, but the rendering will be using the TrueType */ 27 /* tables. */ 28 /* 3) As for Type1 fonts, CDevProc is not supported. */ 29 /* 4) The Metrics dictionary is not supported. */ 30 /* 5) AFM metrics are not supported. */ 31 /* */ 32 /* In other words, this driver supports Type42 fonts derived from */ 33 /* TrueType fonts in a non-CID manner, as done by usual conversion */ 34 /* programs. */ 35 /* */ 36 /*************************************************************************/ 37 38 39 #include "t42drivr.h" 40 #include "t42objs.h" 41 #include "t42error.h" 42 #include FT_INTERNAL_DEBUG_H 43 44 #include FT_SERVICE_XFREE86_NAME_H 45 #include FT_SERVICE_GLYPH_DICT_H 46 #include FT_SERVICE_POSTSCRIPT_NAME_H 47 #include FT_SERVICE_POSTSCRIPT_INFO_H 48 49 #undef FT_COMPONENT 50 #define FT_COMPONENT trace_t42 51 52 53 /* 54 * 55 * GLYPH DICT SERVICE 56 * 57 */ 58 59 static FT_Error t42_get_glyph_name(T42_Face face,FT_UInt glyph_index,FT_Pointer buffer,FT_UInt buffer_max)60 t42_get_glyph_name( T42_Face face, 61 FT_UInt glyph_index, 62 FT_Pointer buffer, 63 FT_UInt buffer_max ) 64 { 65 FT_STRCPYN( buffer, face->type1.glyph_names[glyph_index], buffer_max ); 66 67 return FT_Err_Ok; 68 } 69 70 71 static FT_UInt t42_get_name_index(T42_Face face,FT_String * glyph_name)72 t42_get_name_index( T42_Face face, 73 FT_String* glyph_name ) 74 { 75 FT_Int i; 76 77 78 for ( i = 0; i < face->type1.num_glyphs; i++ ) 79 { 80 FT_String* gname = face->type1.glyph_names[i]; 81 82 83 if ( glyph_name[0] == gname[0] && !ft_strcmp( glyph_name, gname ) ) 84 return (FT_UInt)ft_atol( (const char *)face->type1.charstrings[i] ); 85 } 86 87 return 0; 88 } 89 90 91 static const FT_Service_GlyphDictRec t42_service_glyph_dict = 92 { 93 (FT_GlyphDict_GetNameFunc) t42_get_glyph_name, 94 (FT_GlyphDict_NameIndexFunc)t42_get_name_index 95 }; 96 97 98 /* 99 * 100 * POSTSCRIPT NAME SERVICE 101 * 102 */ 103 104 static const char* t42_get_ps_font_name(T42_Face face)105 t42_get_ps_font_name( T42_Face face ) 106 { 107 return (const char*)face->type1.font_name; 108 } 109 110 111 static const FT_Service_PsFontNameRec t42_service_ps_font_name = 112 { 113 (FT_PsName_GetFunc)t42_get_ps_font_name 114 }; 115 116 117 /* 118 * 119 * POSTSCRIPT INFO SERVICE 120 * 121 */ 122 123 static FT_Error t42_ps_get_font_info(FT_Face face,PS_FontInfoRec * afont_info)124 t42_ps_get_font_info( FT_Face face, 125 PS_FontInfoRec* afont_info ) 126 { 127 *afont_info = ((T42_Face)face)->type1.font_info; 128 129 return FT_Err_Ok; 130 } 131 132 133 static FT_Error t42_ps_get_font_extra(FT_Face face,PS_FontExtraRec * afont_extra)134 t42_ps_get_font_extra( FT_Face face, 135 PS_FontExtraRec* afont_extra ) 136 { 137 *afont_extra = ((T42_Face)face)->type1.font_extra; 138 139 return FT_Err_Ok; 140 } 141 142 143 static FT_Int t42_ps_has_glyph_names(FT_Face face)144 t42_ps_has_glyph_names( FT_Face face ) 145 { 146 FT_UNUSED( face ); 147 148 return 1; 149 } 150 151 152 static FT_Error t42_ps_get_font_private(FT_Face face,PS_PrivateRec * afont_private)153 t42_ps_get_font_private( FT_Face face, 154 PS_PrivateRec* afont_private ) 155 { 156 *afont_private = ((T42_Face)face)->type1.private_dict; 157 158 return FT_Err_Ok; 159 } 160 161 162 static const FT_Service_PsInfoRec t42_service_ps_info = 163 { 164 (PS_GetFontInfoFunc) t42_ps_get_font_info, 165 (PS_GetFontExtraFunc) t42_ps_get_font_extra, 166 (PS_HasGlyphNamesFunc) t42_ps_has_glyph_names, 167 (PS_GetFontPrivateFunc)t42_ps_get_font_private, 168 (PS_GetFontValueFunc) NULL /* not implemented */ 169 }; 170 171 172 /* 173 * 174 * SERVICE LIST 175 * 176 */ 177 178 static const FT_ServiceDescRec t42_services[] = 179 { 180 { FT_SERVICE_ID_GLYPH_DICT, &t42_service_glyph_dict }, 181 { FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &t42_service_ps_font_name }, 182 { FT_SERVICE_ID_POSTSCRIPT_INFO, &t42_service_ps_info }, 183 { FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_TYPE_42 }, 184 { NULL, NULL } 185 }; 186 187 188 FT_CALLBACK_DEF( FT_Module_Interface ) T42_Get_Interface(FT_Module module,const FT_String * t42_interface)189 T42_Get_Interface( FT_Module module, 190 const FT_String* t42_interface ) 191 { 192 FT_UNUSED( module ); 193 194 return ft_service_list_lookup( t42_services, t42_interface ); 195 } 196 197 198 const FT_Driver_ClassRec t42_driver_class = 199 { 200 { 201 FT_MODULE_FONT_DRIVER | 202 FT_MODULE_DRIVER_SCALABLE | 203 #ifdef TT_USE_BYTECODE_INTERPRETER 204 FT_MODULE_DRIVER_HAS_HINTER, 205 #else 206 0, 207 #endif 208 209 sizeof ( T42_DriverRec ), 210 211 "type42", 212 0x10000L, 213 0x20000L, 214 215 0, /* format interface */ 216 217 T42_Driver_Init, 218 T42_Driver_Done, 219 T42_Get_Interface, 220 }, 221 222 sizeof ( T42_FaceRec ), 223 sizeof ( T42_SizeRec ), 224 sizeof ( T42_GlyphSlotRec ), 225 226 T42_Face_Init, 227 T42_Face_Done, 228 T42_Size_Init, 229 T42_Size_Done, 230 T42_GlyphSlot_Init, 231 T42_GlyphSlot_Done, 232 233 T42_GlyphSlot_Load, 234 235 0, /* FT_Face_GetKerningFunc */ 236 0, /* FT_Face_AttachFunc */ 237 238 0, /* FT_Face_GetAdvancesFunc */ 239 T42_Size_Request, 240 T42_Size_Select 241 }; 242 243 244 /* END */ 245