src/freetype/type1z/z1objs.c

   1 /***************************************************************************/
   2 /*                                                                         */
   3 /*  z1objs.c                                                               */
   4 /*                                                                         */
   5 /*    Experimental Type 1 objects manager (body).                          */
   6 /*                                                                         */
   7 /*  Copyright 1996-2000 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 <freetype/internal/ftdebug.h>
  20 #include <freetype/internal/ftstream.h>
  21
  22
  23 #ifdef FT_FLAT_COMPILE
  24
  25 #include "z1gload.h"
  26 #include "z1load.h"
  27 #include "z1afm.h"
  28
  29 #else
  30
  31 #include <type1z/z1gload.h>
  32 #include <type1z/z1load.h>
  33 #include <type1z/z1afm.h>
  34
  35 #endif
  36
  37
  38 #include <freetype/internal/psnames.h>
  39
  40
  41   /*************************************************************************/
  42   /*                                                                       */
  43   /* The macro FT_COMPONENT is used in trace mode.  It is an implicit      */
  44   /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log  */
  45   /* messages during execution.                                            */
  46   /*                                                                       */
  47 #undef  FT_COMPONENT
  48 #define FT_COMPONENT  trace_z1objs
  49
  50
  51   /*************************************************************************/
  52   /*                                                                       */
  53   /*                            FACE  FUNCTIONS                            */
  54   /*                                                                       */
  55   /*************************************************************************/
  56
  57
  58   /*************************************************************************/
  59   /*                                                                       */
  60   /* <Function>                                                            */
  61   /*    Z1_Done_Face                                                       */
  62   /*                                                                       */
  63   /* <Description>                                                         */
  64   /*    The face object destructor.                                        */
  65   /*                                                                       */
  66   /* <Input>                                                               */
  67   /*    face :: A typeless pointer to the face object to destroy.          */
  68   /*                                                                       */
  69   LOCAL_FUNC
  70   void  Z1_Done_Face( T1_Face  face )
  71   {
  72     FT_Memory  memory;
  73     T1_Font*   type1 = &face->type1;
  74
  75
  76     if ( face )
  77     {
  78       memory = face->root.memory;
  79
  80 #ifndef Z1_CONFIG_OPTION_NO_MM_SUPPORT
  81       /* release multiple masters information */
  82       Z1_Done_Blend( face );
  83       face->blend = 0;
  84 #endif
  85
  86       /* release font info strings */
  87       {
  88         T1_FontInfo*  info = &type1->font_info;
  89
  90
  91         FREE( info->version );
  92         FREE( info->notice );
  93         FREE( info->full_name );
  94         FREE( info->family_name );
  95         FREE( info->weight );
  96       }
  97
  98       /* release top dictionary */
  99       FREE( type1->charstrings_len );
 100       FREE( type1->charstrings );
 101       FREE( type1->glyph_names );
 102
 103       FREE( type1->subrs );
 104       FREE( type1->subrs_len );
 105
 106       FREE( type1->subrs_block );
 107       FREE( type1->charstrings_block );
 108       FREE( type1->glyph_names_block );
 109
 110       FREE( type1->encoding.char_index );
 111       FREE( type1->font_name );
 112
 113 #ifndef Z1_CONFIG_OPTION_NO_AFM
 114       /* release afm data if present */
 115       if ( face->afm_data )
 116         Z1_Done_AFM( memory, (Z1_AFM*)face->afm_data );
 117 #endif
 118
 119       /* release unicode map, if any */
 120       FREE( face->unicode_map.maps );
 121       face->unicode_map.num_maps = 0;
 122
 123       face->root.family_name = 0;
 124       face->root.style_name  = 0;
 125     }
 126   }
 127
 128
 129   /*************************************************************************/
 130   /*                                                                       */
 131   /* <Function>                                                            */
 132   /*    Z1_Init_Face                                                       */
 133   /*                                                                       */
 134   /* <Description>                                                         */
 135   /*    The face object constructor.                                       */
 136   /*                                                                       */
 137   /* <Input>                                                               */
 138   /*    stream     ::  input stream where to load font data.               */
 139   /*                                                                       */
 140   /*    face_index :: The index of the font face in the resource.          */
 141   /*                                                                       */
 142   /*    num_params :: Number of additional generic parameters.  Ignored.   */
 143   /*                                                                       */
 144   /*    params     :: Additional generic parameters.  Ignored.             */
 145   /*                                                                       */
 146   /* <InOut>                                                               */
 147   /*    face       :: The face record to build.                            */
 148   /*                                                                       */
 149   /* <Return>                                                              */
 150   /*    FreeType error code.  0 means success.                             */
 151   /*                                                                       */
 152   LOCAL_FUNC
 153   FT_Error  Z1_Init_Face( FT_Stream      stream,
 154                           T1_Face        face,
 155                           FT_Int         face_index,
 156                           FT_Int         num_params,
 157                           FT_Parameter*  params )
 158   {
 159     FT_Error            error;
 160     PSNames_Interface*  psnames;
 161
 162     FT_UNUSED( num_params );
 163     FT_UNUSED( params );
 164     FT_UNUSED( face_index );
 165     FT_UNUSED( stream );
 166
 167
 168     face->root.num_faces = 1;
 169
 170     psnames = (PSNames_Interface*)face->psnames;
 171     if ( !psnames )
 172     {
 173       psnames = (PSNames_Interface*)
 174                 FT_Get_Module_Interface( FT_FACE_LIBRARY( face ), "psnames" );
 175
 176       face->psnames = psnames;
 177     }
 178
 179     /* open the tokenizer, this will also check the font format */
 180     error = Z1_Open_Face( face );
 181     if ( error )
 182       goto Exit;
 183
 184     /* if we just wanted to check the format, leave successfully now */
 185     if ( face_index < 0 )
 186       goto Exit;
 187
 188     /* check the face index */
 189     if ( face_index != 0 )
 190     {
 191       FT_ERROR(( "Z1_Init_Face: invalid face index\n" ));
 192       error = T1_Err_Invalid_Argument;
 193       goto Exit;
 194     }
 195
 196     /* Now, load the font program into the face object */
 197
 198     /* Init the face object fields */
 199     /* Now set up root face fields */
 200     {
 201       FT_Face  root = (FT_Face)&face->root;
 202
 203
 204       root->num_glyphs   = face->type1.num_glyphs;
 205       root->num_charmaps = 1;
 206
 207       root->face_index = face_index;
 208       root->face_flags = FT_FACE_FLAG_SCALABLE;
 209
 210       root->face_flags |= FT_FACE_FLAG_HORIZONTAL;
 211
 212       root->face_flags |= FT_FACE_FLAG_GLYPH_NAMES;
 213
 214       if ( face->type1.font_info.is_fixed_pitch )
 215         root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
 216
 217       if ( face->blend )
 218         root->face_flags |= FT_FACE_FLAG_MULTIPLE_MASTERS;
 219
 220       /* XXX: TODO -- add kerning with .afm support */
 221
 222       /* get style name -- be careful, some broken fonts only */
 223       /* have a `/FontName' dictionary entry!                 */
 224       root->family_name = face->type1.font_info.family_name;
 225       if ( root->family_name )
 226       {
 227         char*  full   = face->type1.font_info.full_name;
 228         char*  family = root->family_name;
 229
 230
 231         while ( *family && *full == *family )
 232         {
 233           family++;
 234           full++;
 235         }
 236
 237         root->style_name = ( *full == ' ' ? full + 1
 238                                           : (char *)"Regular" );
 239       }
 240       else
 241       {
 242         /* do we have a `/FontName'? */
 243         if ( face->type1.font_name )
 244         {
 245           root->family_name = face->type1.font_name;
 246           root->style_name  = "Regular";
 247         }
 248       }
 249
 250       /* no embedded bitmap support */
 251       root->num_fixed_sizes = 0;
 252       root->available_sizes = 0;
 253
 254       root->bbox         = face->type1.font_bbox;
 255       root->units_per_EM = 1000;
 256       root->ascender     =  (FT_Short)face->type1.font_bbox.yMax;
 257       root->descender    = -(FT_Short)face->type1.font_bbox.yMin;
 258       root->height       = ( ( root->ascender + root->descender ) * 12 ) / 10;
 259
 260       /* now compute the maximum advance width */
 261
 262       root->max_advance_width = face->type1.private_dict.standard_width[0];
 263
 264       /* compute max advance width for proportional fonts */
 265       if ( !face->type1.font_info.is_fixed_pitch )
 266       {
 267         FT_Int  max_advance;
 268
 269
 270         error = Z1_Compute_Max_Advance( face, &max_advance );
 271
 272         /* in case of error, keep the standard width */
 273         if ( !error )
 274           root->max_advance_width = max_advance;
 275         else
 276           error = 0;   /* clear error */
 277       }
 278
 279       root->max_advance_height = root->height;
 280
 281       root->underline_position  = face->type1.font_info.underline_position;
 282       root->underline_thickness = face->type1.font_info.underline_thickness;
 283
 284       root->max_points   = 0;
 285       root->max_contours = 0;
 286     }
 287
 288     /* charmap support -- synthetize unicode charmap if possible */
 289     {
 290       FT_Face     root    = &face->root;
 291       FT_CharMap  charmap = face->charmaprecs;
 292
 293
 294       /* synthesize a Unicode charmap if there is support in the `PSNames' */
 295       /* module                                                            */
 296       if ( face->psnames )
 297       {
 298         PSNames_Interface*  psnames = (PSNames_Interface*)face->psnames;
 299
 300
 301         if ( psnames->unicode_value )
 302         {
 303           error = psnames->build_unicodes(
 304                     root->memory,
 305                     face->type1.num_glyphs,
 306                     (const char**)face->type1.glyph_names,
 307                     &face->unicode_map );
 308           if ( !error )
 309           {
 310             root->charmap        = charmap;
 311             charmap->face        = (FT_Face)face;
 312             charmap->encoding    = ft_encoding_unicode;
 313             charmap->platform_id = 3;
 314             charmap->encoding_id = 1;
 315             charmap++;
 316           }
 317
 318           /* simply clear the error in case of failure (which really) */
 319           /* means that out of memory or no unicode glyph names       */
 320           error = FT_Err_Ok;
 321         }
 322       }
 323
 324       /* now, support either the standard, expert, or custom encoding */
 325       charmap->face        = (FT_Face)face;
 326       charmap->platform_id = 7;  /* a new platform id for Adobe fonts? */
 327
 328       switch ( face->type1.encoding_type )
 329       {
 330       case t1_encoding_standard:
 331         charmap->encoding    = ft_encoding_adobe_standard;
 332         charmap->encoding_id = 0;
 333         break;
 334
 335       case t1_encoding_expert:
 336         charmap->encoding    = ft_encoding_adobe_expert;
 337         charmap->encoding_id = 1;
 338         break;
 339
 340       default:
 341         charmap->encoding    = ft_encoding_adobe_custom;
 342         charmap->encoding_id = 2;
 343         break;
 344       }
 345
 346       root->charmaps     = face->charmaps;
 347       root->num_charmaps = charmap - face->charmaprecs + 1;
 348       face->charmaps[0]  = &face->charmaprecs[0];
 349       face->charmaps[1]  = &face->charmaprecs[1];
 350     }
 351
 352   Exit:
 353     return error;
 354   }
 355
 356
 357   /*************************************************************************/
 358   /*                                                                       */
 359   /* <Function>                                                            */
 360   /*    Z1_Init_Driver                                                     */
 361   /*                                                                       */
 362   /* <Description>                                                         */
 363   /*    Initializes a given Type 1 driver object.                          */
 364   /*                                                                       */
 365   /* <Input>                                                               */
 366   /*    driver :: A handle to the target driver object.                    */
 367   /*                                                                       */
 368   /* <Return>                                                              */
 369   /*    FreeType error code.  0 means success.                             */
 370   /*                                                                       */
 371   LOCAL_FUNC
 372   FT_Error  Z1_Init_Driver( Z1_Driver  driver )
 373   {
 374     FT_UNUSED( driver );
 375
 376     return T1_Err_Ok;
 377   }
 378
 379
 380   /*************************************************************************/
 381   /*                                                                       */
 382   /* <Function>                                                            */
 383   /*    Z1_Done_Driver                                                     */
 384   /*                                                                       */
 385   /* <Description>                                                         */
 386   /*    Finalizes a given Type 1 driver.                                   */
 387   /*                                                                       */
 388   /* <Input>                                                               */
 389   /*    driver  :: A handle to the target Type 1 driver.                   */
 390   /*                                                                       */
 391   LOCAL_DEF
 392   void  Z1_Done_Driver( Z1_Driver  driver )
 393   {
 394     FT_UNUSED( driver );
 395   }
 396
 397
 398 /* END */