thirdparty/freetype-2.3.12/src/type1/t1driver.c

   1 /***************************************************************************/
   2 /*                                                                         */
   3 /*  t1driver.c                                                             */
   4 /*                                                                         */
   5 /*    Type 1 driver interface (body).                                      */
   6 /*                                                                         */
   7 /*  Copyright 1996-2001, 2002, 2003, 2004, 2006, 2007, 2009 by             */
   8 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
   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 #include <ft2build.h>
  20 #include "t1driver.h"
  21 #include "t1gload.h"
  22 #include "t1load.h"
  23
  24 #include "t1errors.h"
  25
  26 #ifndef T1_CONFIG_OPTION_NO_AFM
  27 #include "t1afm.h"
  28 #endif
  29
  30 #include FT_INTERNAL_DEBUG_H
  31 #include FT_INTERNAL_STREAM_H
  32
  33 #include FT_SERVICE_MULTIPLE_MASTERS_H
  34 #include FT_SERVICE_GLYPH_DICT_H
  35 #include FT_SERVICE_XFREE86_NAME_H
  36 #include FT_SERVICE_POSTSCRIPT_NAME_H
  37 #include FT_SERVICE_POSTSCRIPT_CMAPS_H
  38 #include FT_SERVICE_POSTSCRIPT_INFO_H
  39 #include FT_SERVICE_KERNING_H
  40
  41
  42   /*************************************************************************/
  43   /*                                                                       */
  44   /* The macro FT_COMPONENT is used in trace mode.  It is an implicit      */
  45   /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log  */
  46   /* messages during execution.                                            */
  47   /*                                                                       */
  48 #undef  FT_COMPONENT
  49 #define FT_COMPONENT  trace_t1driver
  50
  51  /*
  52   *  GLYPH DICT SERVICE
  53   *
  54   */
  55
  56   static FT_Error
  57   t1_get_glyph_name( T1_Face     face,
  58                      FT_UInt     glyph_index,
  59                      FT_Pointer  buffer,
  60                      FT_UInt     buffer_max )
  61   {
  62     FT_STRCPYN( buffer, face->type1.glyph_names[glyph_index], buffer_max );
  63
  64     return T1_Err_Ok;
  65   }
  66
  67
  68   static FT_UInt
  69   t1_get_name_index( T1_Face     face,
  70                      FT_String*  glyph_name )
  71   {
  72     FT_Int      i;
  73     FT_String*  gname;
  74
  75
  76     for ( i = 0; i < face->type1.num_glyphs; i++ )
  77     {
  78       gname = face->type1.glyph_names[i];
  79
  80       if ( !ft_strcmp( glyph_name, gname ) )
  81         return (FT_UInt)i;
  82     }
  83
  84     return 0;
  85   }
  86
  87
  88   static const FT_Service_GlyphDictRec  t1_service_glyph_dict =
  89   {
  90     (FT_GlyphDict_GetNameFunc)  t1_get_glyph_name,
  91     (FT_GlyphDict_NameIndexFunc)t1_get_name_index
  92   };
  93
  94
  95   /*
  96    *  POSTSCRIPT NAME SERVICE
  97    *
  98    */
  99
 100   static const char*
 101   t1_get_ps_name( T1_Face  face )
 102   {
 103     return (const char*) face->type1.font_name;
 104   }
 105
 106
 107   static const FT_Service_PsFontNameRec  t1_service_ps_name =
 108   {
 109     (FT_PsName_GetFunc)t1_get_ps_name
 110   };
 111
 112
 113   /*
 114    *  MULTIPLE MASTERS SERVICE
 115    *
 116    */
 117
 118 #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
 119   static const FT_Service_MultiMastersRec  t1_service_multi_masters =
 120   {
 121     (FT_Get_MM_Func)        T1_Get_Multi_Master,
 122     (FT_Set_MM_Design_Func) T1_Set_MM_Design,
 123     (FT_Set_MM_Blend_Func)  T1_Set_MM_Blend,
 124     (FT_Get_MM_Var_Func)    T1_Get_MM_Var,
 125     (FT_Set_Var_Design_Func)T1_Set_Var_Design
 126   };
 127 #endif
 128
 129
 130   /*
 131    *  POSTSCRIPT INFO SERVICE
 132    *
 133    */
 134
 135   static FT_Error
 136   t1_ps_get_font_info( FT_Face          face,
 137                        PS_FontInfoRec*  afont_info )
 138   {
 139     *afont_info = ((T1_Face)face)->type1.font_info;
 140
 141     return T1_Err_Ok;
 142   }
 143
 144
 145   static FT_Error
 146   t1_ps_get_font_extra( FT_Face           face,
 147                         PS_FontExtraRec*  afont_extra )
 148   {
 149     *afont_extra = ((T1_Face)face)->type1.font_extra;
 150
 151     return T1_Err_Ok;
 152   }
 153
 154
 155   static FT_Int
 156   t1_ps_has_glyph_names( FT_Face  face )
 157   {
 158     FT_UNUSED( face );
 159
 160     return 1;
 161   }
 162
 163
 164   static FT_Error
 165   t1_ps_get_font_private( FT_Face         face,
 166                           PS_PrivateRec*  afont_private )
 167   {
 168     *afont_private = ((T1_Face)face)->type1.private_dict;
 169
 170     return T1_Err_Ok;
 171   }
 172
 173
 174   static const FT_Service_PsInfoRec  t1_service_ps_info =
 175   {
 176     (PS_GetFontInfoFunc)   t1_ps_get_font_info,
 177     (PS_GetFontExtraFunc)  t1_ps_get_font_extra,
 178     (PS_HasGlyphNamesFunc) t1_ps_has_glyph_names,
 179     (PS_GetFontPrivateFunc)t1_ps_get_font_private,
 180   };
 181
 182
 183 #ifndef T1_CONFIG_OPTION_NO_AFM
 184   static const FT_Service_KerningRec  t1_service_kerning =
 185   {
 186     T1_Get_Track_Kerning,
 187   };
 188 #endif
 189
 190
 191   /*
 192    *  SERVICE LIST
 193    *
 194    */
 195
 196   static const FT_ServiceDescRec  t1_services[] =
 197   {
 198     { FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &t1_service_ps_name },
 199     { FT_SERVICE_ID_GLYPH_DICT,           &t1_service_glyph_dict },
 200     { FT_SERVICE_ID_XF86_NAME,            FT_XF86_FORMAT_TYPE_1 },
 201     { FT_SERVICE_ID_POSTSCRIPT_INFO,      &t1_service_ps_info },
 202
 203 #ifndef T1_CONFIG_OPTION_NO_AFM
 204     { FT_SERVICE_ID_KERNING,              &t1_service_kerning },
 205 #endif
 206
 207 #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
 208     { FT_SERVICE_ID_MULTI_MASTERS,        &t1_service_multi_masters },
 209 #endif
 210     { NULL, NULL }
 211   };
 212
 213
 214   static FT_Module_Interface
 215   Get_Interface( FT_Driver         driver,
 216                  const FT_String*  t1_interface )
 217   {
 218     FT_UNUSED( driver );
 219
 220     return ft_service_list_lookup( t1_services, t1_interface );
 221   }
 222
 223
 224 #ifndef T1_CONFIG_OPTION_NO_AFM
 225
 226   /*************************************************************************/
 227   /*                                                                       */
 228   /* <Function>                                                            */
 229   /*    Get_Kerning                                                        */
 230   /*                                                                       */
 231   /* <Description>                                                         */
 232   /*    A driver method used to return the kerning vector between two      */
 233   /*    glyphs of the same face.                                           */
 234   /*                                                                       */
 235   /* <Input>                                                               */
 236   /*    face        :: A handle to the source face object.                 */
 237   /*                                                                       */
 238   /*    left_glyph  :: The index of the left glyph in the kern pair.       */
 239   /*                                                                       */
 240   /*    right_glyph :: The index of the right glyph in the kern pair.      */
 241   /*                                                                       */
 242   /* <Output>                                                              */
 243   /*    kerning     :: The kerning vector.  This is in font units for      */
 244   /*                   scalable formats, and in pixels for fixed-sizes     */
 245   /*                   formats.                                            */
 246   /*                                                                       */
 247   /* <Return>                                                              */
 248   /*    FreeType error code.  0 means success.                             */
 249   /*                                                                       */
 250   /* <Note>                                                                */
 251   /*    Only horizontal layouts (left-to-right & right-to-left) are        */
 252   /*    supported by this function.  Other layouts, or more sophisticated  */
 253   /*    kernings are out of scope of this method (the basic driver         */
 254   /*    interface is meant to be simple).                                  */
 255   /*                                                                       */
 256   /*    They can be implemented by format-specific interfaces.             */
 257   /*                                                                       */
 258   static FT_Error
 259   Get_Kerning( T1_Face     face,
 260                FT_UInt     left_glyph,
 261                FT_UInt     right_glyph,
 262                FT_Vector*  kerning )
 263   {
 264     kerning->x = 0;
 265     kerning->y = 0;
 266
 267     if ( face->afm_data )
 268       T1_Get_Kerning( (AFM_FontInfo)face->afm_data,
 269                       left_glyph,
 270                       right_glyph,
 271                       kerning );
 272
 273     return T1_Err_Ok;
 274   }
 275
 276
 277 #endif /* T1_CONFIG_OPTION_NO_AFM */
 278
 279
 280   FT_CALLBACK_TABLE_DEF
 281   const FT_Driver_ClassRec  t1_driver_class =
 282   {
 283     {
 284       FT_MODULE_FONT_DRIVER       |
 285       FT_MODULE_DRIVER_SCALABLE   |
 286       FT_MODULE_DRIVER_HAS_HINTER,
 287
 288       sizeof( FT_DriverRec ),
 289
 290       "type1",
 291       0x10000L,
 292       0x20000L,
 293
 294       0,   /* format interface */
 295
 296       (FT_Module_Constructor)T1_Driver_Init,
 297       (FT_Module_Destructor) T1_Driver_Done,
 298       (FT_Module_Requester)  Get_Interface,
 299     },
 300
 301     sizeof( T1_FaceRec ),
 302     sizeof( T1_SizeRec ),
 303     sizeof( T1_GlyphSlotRec ),
 304
 305     (FT_Face_InitFunc)        T1_Face_Init,
 306     (FT_Face_DoneFunc)        T1_Face_Done,
 307     (FT_Size_InitFunc)        T1_Size_Init,
 308     (FT_Size_DoneFunc)        T1_Size_Done,
 309     (FT_Slot_InitFunc)        T1_GlyphSlot_Init,
 310     (FT_Slot_DoneFunc)        T1_GlyphSlot_Done,
 311
 312 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
 313     ft_stub_set_char_sizes,
 314     ft_stub_set_pixel_sizes,
 315 #endif
 316     (FT_Slot_LoadFunc)        T1_Load_Glyph,
 317
 318 #ifdef T1_CONFIG_OPTION_NO_AFM
 319     (FT_Face_GetKerningFunc)  0,
 320     (FT_Face_AttachFunc)      0,
 321 #else
 322     (FT_Face_GetKerningFunc)  Get_Kerning,
 323     (FT_Face_AttachFunc)      T1_Read_Metrics,
 324 #endif
 325     (FT_Face_GetAdvancesFunc) T1_Get_Advances,
 326     (FT_Size_RequestFunc)     T1_Size_Request,
 327     (FT_Size_SelectFunc)      0
 328   };
 329
 330
 331 /* END */