modules/freetype2/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 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   static const FT_Service_GlyphDictRec  t1_service_glyph_dict =
  88   {
  89     (FT_GlyphDict_GetNameFunc)  t1_get_glyph_name,
  90     (FT_GlyphDict_NameIndexFunc)t1_get_name_index
  91   };
  92
  93
  94  /*
  95   *  POSTSCRIPT NAME SERVICE
  96   *
  97   */
  98
  99   static const char*
 100   t1_get_ps_name( T1_Face  face )
 101   {
 102     return (const char*) face->type1.font_name;
 103   }
 104
 105   static const FT_Service_PsFontNameRec  t1_service_ps_name =
 106   {
 107     (FT_PsName_GetFunc)t1_get_ps_name
 108   };
 109
 110
 111  /*
 112   *  MULTIPLE MASTERS SERVICE
 113   *
 114   */
 115
 116 #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
 117   static const FT_Service_MultiMastersRec  t1_service_multi_masters =
 118   {
 119     (FT_Get_MM_Func)        T1_Get_Multi_Master,
 120     (FT_Set_MM_Design_Func) T1_Set_MM_Design,
 121     (FT_Set_MM_Blend_Func)  T1_Set_MM_Blend,
 122     (FT_Get_MM_Var_Func)    T1_Get_MM_Var,
 123     (FT_Set_Var_Design_Func)T1_Set_Var_Design
 124   };
 125 #endif
 126
 127
 128  /*
 129   *  POSTSCRIPT INFO SERVICE
 130   *
 131   */
 132
 133   static FT_Error
 134   t1_ps_get_font_info( FT_Face          face,
 135                        PS_FontInfoRec*  afont_info )
 136   {
 137     *afont_info = ((T1_Face)face)->type1.font_info;
 138     return 0;
 139   }
 140
 141
 142   static FT_Int
 143   t1_ps_has_glyph_names( FT_Face  face )
 144   {
 145     FT_UNUSED( face );
 146     return 1;
 147   }
 148
 149
 150   static FT_Error
 151   t1_ps_get_font_private( FT_Face         face,
 152                           PS_PrivateRec*  afont_private )
 153   {
 154     *afont_private = ((T1_Face)face)->type1.private_dict;
 155     return 0;
 156   }
 157
 158
 159   static const FT_Service_PsInfoRec  t1_service_ps_info =
 160   {
 161     (PS_GetFontInfoFunc)   t1_ps_get_font_info,
 162     (PS_HasGlyphNamesFunc) t1_ps_has_glyph_names,
 163     (PS_GetFontPrivateFunc)t1_ps_get_font_private,
 164   };
 165
 166 #ifndef T1_CONFIG_OPTION_NO_AFM
 167   static const FT_Service_KerningRec  t1_service_kerning =
 168   {
 169     T1_Get_Track_Kerning,
 170   };
 171 #endif
 172
 173  /*
 174   *  SERVICE LIST
 175   *
 176   */
 177
 178   static const FT_ServiceDescRec  t1_services[] =
 179   {
 180     { FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &t1_service_ps_name },
 181     { FT_SERVICE_ID_GLYPH_DICT,           &t1_service_glyph_dict },
 182     { FT_SERVICE_ID_XF86_NAME,            FT_XF86_FORMAT_TYPE_1 },
 183     { FT_SERVICE_ID_POSTSCRIPT_INFO,      &t1_service_ps_info },
 184
 185 #ifndef T1_CONFIG_OPTION_NO_AFM
 186     { FT_SERVICE_ID_KERNING,              &t1_service_kerning },
 187 #endif
 188
 189 #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
 190     { FT_SERVICE_ID_MULTI_MASTERS,        &t1_service_multi_masters },
 191 #endif
 192     { NULL, NULL }
 193   };
 194
 195
 196   static FT_Module_Interface
 197   Get_Interface( FT_Driver         driver,
 198                  const FT_String*  t1_interface )
 199   {
 200     FT_UNUSED( driver );
 201
 202     return ft_service_list_lookup( t1_services, t1_interface );
 203   }
 204
 205
 206 #ifndef T1_CONFIG_OPTION_NO_AFM
 207
 208   /*************************************************************************/
 209   /*                                                                       */
 210   /* <Function>                                                            */
 211   /*    Get_Kerning                                                        */
 212   /*                                                                       */
 213   /* <Description>                                                         */
 214   /*    A driver method used to return the kerning vector between two      */
 215   /*    glyphs of the same face.                                           */
 216   /*                                                                       */
 217   /* <Input>                                                               */
 218   /*    face        :: A handle to the source face object.                 */
 219   /*                                                                       */
 220   /*    left_glyph  :: The index of the left glyph in the kern pair.       */
 221   /*                                                                       */
 222   /*    right_glyph :: The index of the right glyph in the kern pair.      */
 223   /*                                                                       */
 224   /* <Output>                                                              */
 225   /*    kerning     :: The kerning vector.  This is in font units for      */
 226   /*                   scalable formats, and in pixels for fixed-sizes     */
 227   /*                   formats.                                            */
 228   /*                                                                       */
 229   /* <Return>                                                              */
 230   /*    FreeType error code.  0 means success.                             */
 231   /*                                                                       */
 232   /* <Note>                                                                */
 233   /*    Only horizontal layouts (left-to-right & right-to-left) are        */
 234   /*    supported by this function.  Other layouts, or more sophisticated  */
 235   /*    kernings are out of scope of this method (the basic driver         */
 236   /*    interface is meant to be simple).                                  */
 237   /*                                                                       */
 238   /*    They can be implemented by format-specific interfaces.             */
 239   /*                                                                       */
 240   static FT_Error
 241   Get_Kerning( T1_Face     face,
 242                FT_UInt     left_glyph,
 243                FT_UInt     right_glyph,
 244                FT_Vector*  kerning )
 245   {
 246     kerning->x = 0;
 247     kerning->y = 0;
 248
 249     if ( face->afm_data )
 250       T1_Get_Kerning( (AFM_FontInfo)face->afm_data,
 251                       left_glyph,
 252                       right_glyph,
 253                       kerning );
 254
 255     return T1_Err_Ok;
 256   }
 257
 258
 259 #endif /* T1_CONFIG_OPTION_NO_AFM */
 260
 261
 262   FT_CALLBACK_TABLE_DEF
 263   const FT_Driver_ClassRec  t1_driver_class =
 264   {
 265     {
 266       FT_MODULE_FONT_DRIVER       |
 267       FT_MODULE_DRIVER_SCALABLE   |
 268       FT_MODULE_DRIVER_HAS_HINTER,
 269
 270       sizeof( FT_DriverRec ),
 271
 272       "type1",
 273       0x10000L,
 274       0x20000L,
 275
 276       0,   /* format interface */
 277
 278       (FT_Module_Constructor)T1_Driver_Init,
 279       (FT_Module_Destructor) T1_Driver_Done,
 280       (FT_Module_Requester)  Get_Interface,
 281     },
 282
 283     sizeof( T1_FaceRec ),
 284     sizeof( T1_SizeRec ),
 285     sizeof( T1_GlyphSlotRec ),
 286
 287     (FT_Face_InitFunc)        T1_Face_Init,
 288     (FT_Face_DoneFunc)        T1_Face_Done,
 289     (FT_Size_InitFunc)        T1_Size_Init,
 290     (FT_Size_DoneFunc)        T1_Size_Done,
 291     (FT_Slot_InitFunc)        T1_GlyphSlot_Init,
 292     (FT_Slot_DoneFunc)        T1_GlyphSlot_Done,
 293
 294 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
 295     ft_stub_set_char_sizes,
 296     ft_stub_set_pixel_sizes,
 297 #endif
 298     (FT_Slot_LoadFunc)        T1_Load_Glyph,
 299
 300 #ifdef T1_CONFIG_OPTION_NO_AFM
 301     (FT_Face_GetKerningFunc)  0,
 302     (FT_Face_AttachFunc)      0,
 303 #else
 304     (FT_Face_GetKerningFunc)  Get_Kerning,
 305     (FT_Face_AttachFunc)      T1_Read_Metrics,
 306 #endif
 307     (FT_Face_GetAdvancesFunc) 0,
 308     (FT_Size_RequestFunc)     T1_Size_Request,
 309     (FT_Size_SelectFunc)      0
 310   };
 311
 312
 313 /* END */