[wxWidgets.git] / src / freetype / sfnt / sfobjs.c

/***************************************************************************/
/*                                                                         */
/*  sfobjs.c                                                               */
/*                                                                         */
/*    SFNT object management (base).                                       */
/*                                                                         */
/*  Copyright 1996-2000 by                                                 */
/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
/*                                                                         */
/*  This file is part of the FreeType project, and may only be used,       */
/*  modified, and distributed under the terms of the FreeType project      */
/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
/*  this file you indicate that you have read the license and              */
/*  understand and accept it fully.                                        */
/*                                                                         */
/***************************************************************************/


#ifdef FT_FLAT_COMPILE

#include "sfobjs.h"

#else

#include <sfnt/sfobjs.h>

#endif


#include <freetype/internal/sfnt.h>
#include <freetype/internal/psnames.h>
#include <freetype/ttnameid.h>
#include <freetype/internal/tterrors.h>


  /*************************************************************************/
  /*                                                                       */
  /* The macro FT_COMPONENT is used in trace mode.  It is an implicit      */
  /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log  */
  /* messages during execution.                                            */
  /*                                                                       */
#undef  FT_COMPONENT
#define FT_COMPONENT  trace_sfobjs


  /*************************************************************************/
  /*                                                                       */
  /* <Function>                                                            */
  /*    Get_Name                                                           */
  /*                                                                       */
  /* <Description>                                                         */
  /*    Returns a given ENGLISH name record in ASCII.                      */
  /*                                                                       */
  /* <Input>                                                               */
  /*    face   :: A handle to the source face object.                      */
  /*                                                                       */
  /*    nameid :: The name id of the name record to return.                */
  /*                                                                       */
  /* <Return>                                                              */
  /*    Character string.  NULL if no name is present.                     */
  /*                                                                       */
  static
  FT_String*  Get_Name( TT_Face    face,
                        FT_UShort  nameid )
  {
    FT_Memory    memory = face->root.memory;
    FT_UShort    n;
    TT_NameRec*  rec;
    FT_Bool      wide_chars = 1;


    rec = face->name_table.names;
    for ( n = 0; n < face->name_table.numNameRecords; n++, rec++ )
    {
      if ( rec->nameID == nameid )
      {
        /* found the name -- now create an ASCII string from it */
        FT_Bool  found = 0;


        /* test for Microsoft English language */
        if ( rec->platformID == TT_PLATFORM_MICROSOFT &&
             rec->encodingID <= TT_MS_ID_UNICODE_CS   &&
             ( rec->languageID & 0x3FF ) == 0x009     )
          found = 1;

        /* test for Apple Unicode encoding */
        else if ( rec->platformID == TT_PLATFORM_APPLE_UNICODE )
          found = 1;

        /* test for Apple Roman */
        else if ( rec->platformID == TT_PLATFORM_MACINTOSH &&
                  rec->languageID == TT_MAC_ID_ROMAN       )
        {
          found      = 1;
          wide_chars = 0;
        }

        /* found a Unicode name */
        if ( found )
        {
          FT_String*  string;
          FT_UInt     len;


          if ( wide_chars )
          {
            FT_UInt   m;


            len = (FT_UInt)rec->stringLength / 2;
            if ( MEM_Alloc( string, len + 1 ) )
              return NULL;

            for ( m = 0; m < len; m ++ )
              string[m] = rec->string[2 * m + 1];
          }
          else
          {
            len = rec->stringLength;
            if ( MEM_Alloc( string, len + 1 ) )
              return NULL;

            MEM_Copy( string, rec->string, len );
          }

          string[len] = '\0';
          return string;
        }
      }
    }

    return NULL;
  }


  static
  FT_Encoding  find_encoding( int  platform_id,
                              int  encoding_id )
  {
    typedef struct  TEncoding
    {
      int          platform_id;
      int          encoding_id;
      FT_Encoding  encoding;

    } TEncoding;

    static
    const TEncoding  tt_encodings[] =
    {
      { TT_PLATFORM_ISO,           -1,                  ft_encoding_unicode },

      { TT_PLATFORM_APPLE_UNICODE, -1,                  ft_encoding_unicode },

      { TT_PLATFORM_MACINTOSH,     TT_MAC_ID_ROMAN,     ft_encoding_apple_roman },

      { TT_PLATFORM_MICROSOFT,     TT_MS_ID_UNICODE_CS, ft_encoding_unicode },
      { TT_PLATFORM_MICROSOFT,     TT_MS_ID_SJIS,       ft_encoding_sjis },
      { TT_PLATFORM_MICROSOFT,     TT_MS_ID_GB2312,     ft_encoding_gb2312 },
      { TT_PLATFORM_MICROSOFT,     TT_MS_ID_BIG_5,      ft_encoding_big5 },
      { TT_PLATFORM_MICROSOFT,     TT_MS_ID_WANSUNG,    ft_encoding_wansung },
      { TT_PLATFORM_MICROSOFT,     TT_MS_ID_JOHAB,      ft_encoding_johab }
    };

    const TEncoding  *cur, *limit;


    cur   = tt_encodings;
    limit = cur + sizeof ( tt_encodings ) / sizeof ( tt_encodings[0] );

    for ( ; cur < limit; cur++ )
    {
      if ( cur->platform_id == platform_id )
      {
        if ( cur->encoding_id == encoding_id ||
             cur->encoding_id == -1          )
          return cur->encoding;
      }
    }

    return ft_encoding_none;
  }


  LOCAL_FUNC
  FT_Error  SFNT_Init_Face( FT_Stream      stream,
                            TT_Face        face,
                            FT_Int         face_index,
                            FT_Int         num_params,
                            FT_Parameter*  params )
  {
    FT_Error            error;
    FT_Library          library = face->root.driver->root.library;
    SFNT_Interface*     sfnt;
    SFNT_Header         sfnt_header;

    /* for now, parameters are unused */
    FT_UNUSED( num_params );
    FT_UNUSED( params );

    sfnt = (SFNT_Interface*)face->sfnt;
    if ( !sfnt )
    {
      sfnt = (SFNT_Interface*)FT_Get_Module_Interface( library, "sfnt" );
      if ( !sfnt )
      {
        error = FT_Err_Invalid_File_Format;
        goto Exit;
      }

      face->sfnt       = sfnt;
      face->goto_table = sfnt->goto_table;
    }

    if ( !face->psnames )
    {
      face->psnames = (PSNames_Interface*)
                       FT_Get_Module_Interface( library, "psnames" );
    }

    /* check that we have a valid TrueType file */
    error = sfnt->load_sfnt_header( face, stream, face_index, &sfnt_header );
    if ( error )
      goto Exit;

    face->format_tag = sfnt_header.format_tag;
    face->num_tables = sfnt_header.num_tables;

    /* Load font directory */
    error = sfnt->load_directory( face, stream, &sfnt_header );
    if ( error )
      goto Exit;

    face->root.num_faces = face->ttc_header.count;
    if ( face->root.num_faces < 1 )
      face->root.num_faces = 1;

  Exit:
    return error;
  }


#undef  LOAD_
#define LOAD_( x )  ( ( error = sfnt->load_##x( face, stream ) ) \
                      != TT_Err_Ok )


  LOCAL_FUNC
  FT_Error  SFNT_Load_Face( FT_Stream      stream,
                            TT_Face        face,
                            FT_Int         face_index,
                            FT_Int         num_params,
                            FT_Parameter*  params )
  {
    FT_Error         error;
    SFNT_Interface*  sfnt = (SFNT_Interface*)face->sfnt;

    FT_UNUSED( face_index );
    FT_UNUSED( num_params );
    FT_UNUSED( params );


    /* Load tables */
    if ( LOAD_( header )        ||
         LOAD_( max_profile )   ||

         /* load the `hhea' & `hmtx' tables at once */
         ( error = sfnt->load_metrics( face, stream, 0 ) ) != TT_Err_Ok  ||

         /* try to load the `vhea' & `vmtx' at once if present */
         ( error = sfnt->load_metrics( face, stream, 1 ) ) != TT_Err_Ok  ||

         LOAD_( charmaps )      ||
         LOAD_( names )         ||
         LOAD_( os2 )           ||
         LOAD_( psnames )       )
     goto Exit;

    /* the optional tables */

#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
    /* embedded bitmap support. */
    if ( sfnt->load_sbits && LOAD_( sbits ) )
      goto Exit;
#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */

    if ( LOAD_( hdmx )          ||
         LOAD_( gasp )          ||
         LOAD_( kerning )       ||
         LOAD_( pclt )          )
      goto Exit;

#ifdef TT_CONFIG_OPTION_EXTEND_ENGINE
    if ( ( error = TT_Extension_Create( face ) ) != TT_Err_Ok )
      goto Exit;
#endif

    face->root.family_name = Get_Name( face, TT_NAME_ID_FONT_FAMILY );
    face->root.style_name  = Get_Name( face, TT_NAME_ID_FONT_SUBFAMILY );

    /* now set up root fields */
    {
      FT_Face     root = &face->root;
      FT_Int      flags;
      TT_CharMap  charmap;
      FT_Int      n;
      FT_Memory   memory;


      memory = root->memory;

      /*********************************************************************/
      /*                                                                   */
      /* Compute face flags.                                               */
      /*                                                                   */
      flags = FT_FACE_FLAG_SCALABLE  |    /* scalable outlines */
              FT_FACE_FLAG_SFNT      |    /* SFNT file format  */
              FT_FACE_FLAG_HORIZONTAL;    /* horizontal data   */

#ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
      /* might need more polish to detect the presence of a Postscript */
      /* name table in the font                                        */
      flags |= FT_FACE_FLAG_GLYPH_NAMES;
#endif

      /* fixed width font? */
      if ( face->postscript.isFixedPitch )
        flags |= FT_FACE_FLAG_FIXED_WIDTH;

      /* vertical information? */
      if ( face->vertical_info )
        flags |= FT_FACE_FLAG_VERTICAL;

      /* kerning available ? */
      if ( face->kern_pairs )
        flags |= FT_FACE_FLAG_KERNING;

      root->face_flags = flags;

      /*********************************************************************/
      /*                                                                   */
      /* Compute style flags.                                              */
      /*                                                                   */
      flags = 0;

      if ( face->os2.version != 0xFFFF )
      {
        /* we have an OS/2 table; use the `fsSelection' field */
        if ( face->os2.fsSelection & 1 )
          flags |= FT_STYLE_FLAG_ITALIC;

        if ( face->os2.fsSelection & 32 )
          flags |= FT_STYLE_FLAG_BOLD;
      }
      else
      {
        /* this is an old Mac font, use the header field */
        if ( face->header.Mac_Style & 1 )
          flags |= FT_STYLE_FLAG_BOLD;

        if ( face->header.Mac_Style & 2 )
          flags |= FT_STYLE_FLAG_ITALIC;
      }

      root->style_flags = flags;

      /*********************************************************************/
      /*                                                                   */
      /* Polish the charmaps.                                              */
      /*                                                                   */
      /*   Try to set the charmap encoding according to the platform &     */
      /*   encoding ID of each charmap.                                    */
      /*                                                                   */
      charmap            = face->charmaps;
      root->num_charmaps = face->num_charmaps;

      /* allocate table of pointers */
      if ( ALLOC_ARRAY( root->charmaps, root->num_charmaps, FT_CharMap ) )
        goto Exit;

      for ( n = 0; n < root->num_charmaps; n++, charmap++ )
      {
        FT_Int  platform = charmap->cmap.platformID;
        FT_Int  encoding = charmap->cmap.platformEncodingID;


        charmap->root.face        = (FT_Face)face;
        charmap->root.platform_id = platform;
        charmap->root.encoding_id = encoding;
        charmap->root.encoding    = find_encoding( platform, encoding );

        /* now, set root->charmap with a unicode charmap */
        /* wherever available                            */
        if ( !root->charmap                                &&
             charmap->root.encoding == ft_encoding_unicode )
          root->charmap = (FT_CharMap)charmap;

        root->charmaps[n] = (FT_CharMap)charmap;
      }

#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS

      if ( face->num_sbit_strikes )
      {
       root->num_fixed_sizes = face->num_sbit_strikes;
       if ( ALLOC_ARRAY( root->available_sizes,
                         face->num_sbit_strikes,
                         FT_Bitmap_Size ) )
         return error;

        for ( n = 0 ; n < face->num_sbit_strikes ; n++ )
        {
          root->available_sizes[n].width =
            face->sbit_strikes[n].x_ppem;
          root->available_sizes[n].height =
            face->sbit_strikes[n].y_ppem;
        }
      }
      else

#else /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */

      {
       root->num_fixed_sizes = 0;
       root->available_sizes = 0;
      }

#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */

      /*********************************************************************/
      /*                                                                   */
      /*  Set up metrics.                                                  */
      /*                                                                   */
      root->bbox.xMin    = face->header.xMin;
      root->bbox.yMin    = face->header.yMin;
      root->bbox.xMax    = face->header.xMax;
      root->bbox.yMax    = face->header.yMax;
      root->units_per_EM = face->header.Units_Per_EM;

      /* The ascender/descender/height are computed from the OS/2 table    */
      /* when found.  Otherwise, they're taken from the horizontal header. */
      if ( face->os2.version != 0xFFFF )
      {
        root->ascender  =  face->os2.sTypoAscender;
        root->descender = -face->os2.sTypoDescender;
        root->height    =  root->ascender + root->descender +
                           face->os2.sTypoLineGap;
      }
      else
      {
        root->ascender  = face->horizontal.Ascender;
        root->descender = face->horizontal.Descender;
        root->height    = root->ascender + root->descender +
                          face->horizontal.Line_Gap;
      }

      root->max_advance_width   = face->horizontal.advance_Width_Max;

      root->max_advance_height  = face->vertical_info
                                    ? face->vertical.advance_Height_Max
                                    : root->height;

      root->underline_position  = face->postscript.underlinePosition;
      root->underline_thickness = face->postscript.underlineThickness;

      /* root->max_points     -- already set up */
      /* root->max_contours   -- already set up */
    }

  Exit:
    return error;
  }


#undef LOAD_


  LOCAL_FUNC
  void  SFNT_Done_Face( TT_Face  face )
  {
    FT_Memory        memory = face->root.memory;
    SFNT_Interface*  sfnt   = (SFNT_Interface*)face->sfnt;


    if ( sfnt )
    {
      /* destroy the postscript names table if it is loaded */
      if ( sfnt->free_psnames )
        sfnt->free_psnames( face );

      /* destroy the embedded bitmaps table if it is loaded */
      if ( sfnt->free_sbits )
        sfnt->free_sbits( face );
    }

    /* freeing the kerning table */
    FREE( face->kern_pairs );
    face->num_kern_pairs = 0;

    /* freeing the collection table */
    FREE( face->ttc_header.offsets );
    face->ttc_header.count = 0;

    /* freeing table directory */
    FREE( face->dir_tables );
    face->num_tables = 0;

    /* freeing the character mapping tables */
    if ( sfnt && sfnt->load_charmaps )
    {
      FT_UShort  n;


      for ( n = 0; n < face->num_charmaps; n++ )
        sfnt->free_charmap( face, &face->charmaps[n].cmap );
    }

    FREE( face->charmaps );
    face->num_charmaps = 0;

    FREE( face->root.charmaps );
    face->root.num_charmaps = 0;
    face->root.charmap      = 0;

    /* freeing the horizontal metrics */
    FREE( face->horizontal.long_metrics );
    FREE( face->horizontal.short_metrics );

    /* freeing the vertical ones, if any */
    if ( face->vertical_info )
    {
      FREE( face->vertical.long_metrics  );
      FREE( face->vertical.short_metrics );
      face->vertical_info = 0;
    }

    /* freeing the gasp table */
    FREE( face->gasp.gaspRanges );
    face->gasp.numRanges = 0;

    /* freeing the name table */
    sfnt->free_names( face );

    /* freeing the hdmx table */
    sfnt->free_hdmx( face );

    /* freeing family and style name */
    FREE( face->root.family_name );
    FREE( face->root.style_name );

    /* freeing sbit size table */
    face->root.num_fixed_sizes = 0;
    if ( face->root.available_sizes )
      FREE( face->root.available_sizes );

    face->sfnt = 0;
  }


/* END */
Commit	Line	Data
cabec872 RR	1	/***************************************************************************/
	2	/* */
	3	/* sfobjs.c */
	4	/* */
	5	/* SFNT object management (base). */
	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	#ifdef FT_FLAT_COMPILE
	20
	21	#include "sfobjs.h"
	22
	23	#else
	24
	25	#include <sfnt/sfobjs.h>
	26
	27	#endif
	28
	29
	30	#include <freetype/internal/sfnt.h>
	31	#include <freetype/internal/psnames.h>
	32	#include <freetype/ttnameid.h>
	33	#include <freetype/internal/tterrors.h>
	34
	35
	36	/*************************************************************************/
	37	/* */
	38	/* The macro FT_COMPONENT is used in trace mode. It is an implicit */
	39	/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
	40	/* messages during execution. */
	41	/* */
	42	#undef FT_COMPONENT
	43	#define FT_COMPONENT trace_sfobjs
	44
	45
	46	/*************************************************************************/
	47	/* */
	48	/* <Function> */
	49	/* Get_Name */
	50	/* */
	51	/* <Description> */
	52	/* Returns a given ENGLISH name record in ASCII. */
	53	/* */
	54	/* <Input> */
	55	/* face :: A handle to the source face object. */
	56	/* */
	57	/* nameid :: The name id of the name record to return. */
	58	/* */
	59	/* <Return> */
	60	/* Character string. NULL if no name is present. */
	61	/* */
	62	static
	63	FT_String* Get_Name( TT_Face face,
	64	FT_UShort nameid )
65	{
66	FT_Memory memory = face->root.memory;
67	FT_UShort n;
68	TT_NameRec* rec;
69	FT_Bool wide_chars = 1;
70
71
72	rec = face->name_table.names;
73	for ( n = 0; n < face->name_table.numNameRecords; n++, rec++ )
74	{
75	if ( rec->nameID == nameid )
76	{
77	/* found the name -- now create an ASCII string from it */
78	FT_Bool found = 0;
79
80
81	/* test for Microsoft English language */
82	if ( rec->platformID == TT_PLATFORM_MICROSOFT &&
83	rec->encodingID <= TT_MS_ID_UNICODE_CS &&
84	( rec->languageID & 0x3FF ) == 0x009 )
85	found = 1;
86
87	/* test for Apple Unicode encoding */
88	else if ( rec->platformID == TT_PLATFORM_APPLE_UNICODE )
89	found = 1;
90
91	/* test for Apple Roman */
92	else if ( rec->platformID == TT_PLATFORM_MACINTOSH &&
93	rec->languageID == TT_MAC_ID_ROMAN )
94	{
95	found = 1;
96	wide_chars = 0;
97	}
98
99	/* found a Unicode name */
100	if ( found )
101	{
102	FT_String* string;
103	FT_UInt len;
104
105
106	if ( wide_chars )
107	{
108	FT_UInt m;
109
110
111	len = (FT_UInt)rec->stringLength / 2;
112	if ( MEM_Alloc( string, len + 1 ) )
113	return NULL;
114
115	for ( m = 0; m < len; m ++ )
116	string[m] = rec->string[2 * m + 1];
117	}
118	else
119	{
120	len = rec->stringLength;
121	if ( MEM_Alloc( string, len + 1 ) )
122	return NULL;
123
124	MEM_Copy( string, rec->string, len );
125	}
126
127	string[len] = '\0';
128	return string;
129	}
130	}
131	}
132
133	return NULL;
134	}
135
136
137	static
138	FT_Encoding find_encoding( int platform_id,
139	int encoding_id )
140	{
141	typedef struct TEncoding
142	{
143	int platform_id;
144	int encoding_id;
145	FT_Encoding encoding;
146
147	} TEncoding;
148
149	static
150	const TEncoding tt_encodings[] =
151	{
152	{ TT_PLATFORM_ISO, -1, ft_encoding_unicode },
153
154	{ TT_PLATFORM_APPLE_UNICODE, -1, ft_encoding_unicode },
155
156	{ TT_PLATFORM_MACINTOSH, TT_MAC_ID_ROMAN, ft_encoding_apple_roman },
157
158	{ TT_PLATFORM_MICROSOFT, TT_MS_ID_UNICODE_CS, ft_encoding_unicode },
159	{ TT_PLATFORM_MICROSOFT, TT_MS_ID_SJIS, ft_encoding_sjis },
160	{ TT_PLATFORM_MICROSOFT, TT_MS_ID_GB2312, ft_encoding_gb2312 },
161	{ TT_PLATFORM_MICROSOFT, TT_MS_ID_BIG_5, ft_encoding_big5 },
162	{ TT_PLATFORM_MICROSOFT, TT_MS_ID_WANSUNG, ft_encoding_wansung },
163	{ TT_PLATFORM_MICROSOFT, TT_MS_ID_JOHAB, ft_encoding_johab }
164	};
165
166	const TEncoding cur, limit;
167
168
169	cur = tt_encodings;
170	limit = cur + sizeof ( tt_encodings ) / sizeof ( tt_encodings[0] );
171
172	for ( ; cur < limit; cur++ )
173	{
174	if ( cur->platform_id == platform_id )
175	{
176	if ( cur->encoding_id == encoding_id \|\|
177	cur->encoding_id == -1 )
178	return cur->encoding;
179	}
180	}
181
182	return ft_encoding_none;
183	}
184
185
186	LOCAL_FUNC
187	FT_Error SFNT_Init_Face( FT_Stream stream,
188	TT_Face face,
189	FT_Int face_index,
190	FT_Int num_params,
191	FT_Parameter* params )
192	{
193	FT_Error error;
194	FT_Library library = face->root.driver->root.library;
195	SFNT_Interface* sfnt;
196	SFNT_Header sfnt_header;
197
198	/* for now, parameters are unused */
199	FT_UNUSED( num_params );
200	FT_UNUSED( params );
201
202	sfnt = (SFNT_Interface*)face->sfnt;
203	if ( !sfnt )
204	{
205	sfnt = (SFNT_Interface*)FT_Get_Module_Interface( library, "sfnt" );
206	if ( !sfnt )
207	{
208	error = FT_Err_Invalid_File_Format;
209	goto Exit;
210	}
211
212	face->sfnt = sfnt;
213	face->goto_table = sfnt->goto_table;
214	}
215
216	if ( !face->psnames )
217	{
218	face->psnames = (PSNames_Interface*)
219	FT_Get_Module_Interface( library, "psnames" );
220	}
221
222	/* check that we have a valid TrueType file */
223	error = sfnt->load_sfnt_header( face, stream, face_index, &sfnt_header );
224	if ( error )
225	goto Exit;
226
227	face->format_tag = sfnt_header.format_tag;
228	face->num_tables = sfnt_header.num_tables;
229
230	/* Load font directory */
231	error = sfnt->load_directory( face, stream, &sfnt_header );
232	if ( error )
233	goto Exit;
234
235	face->root.num_faces = face->ttc_header.count;
236	if ( face->root.num_faces < 1 )
237	face->root.num_faces = 1;
238
239	Exit:
240	return error;
241	}
242
243
244	#undef LOAD_
245	#define LOAD_( x ) ( ( error = sfnt->load_##x( face, stream ) ) \
246	!= TT_Err_Ok )
247
248
249	LOCAL_FUNC
250	FT_Error SFNT_Load_Face( FT_Stream stream,
251	TT_Face face,
252	FT_Int face_index,
253	FT_Int num_params,
254	FT_Parameter* params )
255	{
256	FT_Error error;
257	SFNT_Interface* sfnt = (SFNT_Interface*)face->sfnt;
258
259	FT_UNUSED( face_index );
260	FT_UNUSED( num_params );
261	FT_UNUSED( params );
262
263
264	/* Load tables */
265	if ( LOAD_( header ) \|\|
266	LOAD_( max_profile ) \|\|
267
268	/* load the `hhea' & `hmtx' tables at once */
269	( error = sfnt->load_metrics( face, stream, 0 ) ) != TT_Err_Ok \|\|
270
271	/* try to load the `vhea' & `vmtx' at once if present */
272	( error = sfnt->load_metrics( face, stream, 1 ) ) != TT_Err_Ok \|\|
273
274	LOAD_( charmaps ) \|\|
275	LOAD_( names ) \|\|
276	LOAD_( os2 ) \|\|
277	LOAD_( psnames ) )
278	goto Exit;
279
280	/* the optional tables */
281
282	#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
283	/* embedded bitmap support. */
284	if ( sfnt->load_sbits && LOAD_( sbits ) )
285	goto Exit;
286	#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
287
288	if ( LOAD_( hdmx ) \|\|
289	LOAD_( gasp ) \|\|
290	LOAD_( kerning ) \|\|
291	LOAD_( pclt ) )
292	goto Exit;
293
294	#ifdef TT_CONFIG_OPTION_EXTEND_ENGINE
295	if ( ( error = TT_Extension_Create( face ) ) != TT_Err_Ok )
296	goto Exit;
297	#endif
298
299	face->root.family_name = Get_Name( face, TT_NAME_ID_FONT_FAMILY );
300	face->root.style_name = Get_Name( face, TT_NAME_ID_FONT_SUBFAMILY );
301
302	/* now set up root fields */
303	{
304	FT_Face root = &face->root;
305	FT_Int flags;
306	TT_CharMap charmap;
307	FT_Int n;
308	FT_Memory memory;
309
310
311	memory = root->memory;
312
313	/*********************************************************************/
314	/* */
315	/* Compute face flags. */
316	/* */
317	flags = FT_FACE_FLAG_SCALABLE \| /* scalable outlines */
318	FT_FACE_FLAG_SFNT \| /* SFNT file format */
319	FT_FACE_FLAG_HORIZONTAL; /* horizontal data */
320
321	#ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
322	/* might need more polish to detect the presence of a Postscript */
323	/* name table in the font */
324	flags \|= FT_FACE_FLAG_GLYPH_NAMES;
325	#endif
326
327	/* fixed width font? */
328	if ( face->postscript.isFixedPitch )
329	flags \|= FT_FACE_FLAG_FIXED_WIDTH;
330
331	/* vertical information? */
332	if ( face->vertical_info )
333	flags \|= FT_FACE_FLAG_VERTICAL;
334
335	/* kerning available ? */
336	if ( face->kern_pairs )
337	flags \|= FT_FACE_FLAG_KERNING;
338
339	root->face_flags = flags;
340
341	/*********************************************************************/
342	/* */
343	/* Compute style flags. */
344	/* */
345	flags = 0;
346
347	if ( face->os2.version != 0xFFFF )
348	{
349	/* we have an OS/2 table; use the `fsSelection' field */
350	if ( face->os2.fsSelection & 1 )
351	flags \|= FT_STYLE_FLAG_ITALIC;
352
353	if ( face->os2.fsSelection & 32 )
354	flags \|= FT_STYLE_FLAG_BOLD;
355	}
356	else
357	{
358	/* this is an old Mac font, use the header field */
359	if ( face->header.Mac_Style & 1 )
360	flags \|= FT_STYLE_FLAG_BOLD;
361
362	if ( face->header.Mac_Style & 2 )
363	flags \|= FT_STYLE_FLAG_ITALIC;
364	}
365
366	root->style_flags = flags;
367
368	/*********************************************************************/
369	/* */
370	/* Polish the charmaps. */
371	/* */
372	/* Try to set the charmap encoding according to the platform & */
373	/* encoding ID of each charmap. */
374	/* */
375	charmap = face->charmaps;
376	root->num_charmaps = face->num_charmaps;
377
378	/* allocate table of pointers */
379	if ( ALLOC_ARRAY( root->charmaps, root->num_charmaps, FT_CharMap ) )
380	goto Exit;
381
382	for ( n = 0; n < root->num_charmaps; n++, charmap++ )
383	{
384	FT_Int platform = charmap->cmap.platformID;
385	FT_Int encoding = charmap->cmap.platformEncodingID;
386
387
388	charmap->root.face = (FT_Face)face;
389	charmap->root.platform_id = platform;
390	charmap->root.encoding_id = encoding;
391	charmap->root.encoding = find_encoding( platform, encoding );
392
393	/* now, set root->charmap with a unicode charmap */
394	/* wherever available */
395	if ( !root->charmap &&
396	charmap->root.encoding == ft_encoding_unicode )
397	root->charmap = (FT_CharMap)charmap;
398
399	root->charmaps[n] = (FT_CharMap)charmap;
400	}
401
402	#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
403
404	if ( face->num_sbit_strikes )
405	{
406	root->num_fixed_sizes = face->num_sbit_strikes;
407	if ( ALLOC_ARRAY( root->available_sizes,
408	face->num_sbit_strikes,
409	FT_Bitmap_Size ) )
410	return error;
411
412	for ( n = 0 ; n < face->num_sbit_strikes ; n++ )
413	{
414	root->available_sizes[n].width =
415	face->sbit_strikes[n].x_ppem;
416	root->available_sizes[n].height =
417	face->sbit_strikes[n].y_ppem;
418	}
419	}
420	else
421
422	#else /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
423
424	{
425	root->num_fixed_sizes = 0;
426	root->available_sizes = 0;
427	}
428
429	#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
430
431	/*********************************************************************/
432	/* */
433	/* Set up metrics. */
434	/* */
435	root->bbox.xMin = face->header.xMin;
436	root->bbox.yMin = face->header.yMin;
437	root->bbox.xMax = face->header.xMax;
438	root->bbox.yMax = face->header.yMax;
439	root->units_per_EM = face->header.Units_Per_EM;
440
441	/* The ascender/descender/height are computed from the OS/2 table */
442	/* when found. Otherwise, they're taken from the horizontal header. */
443	if ( face->os2.version != 0xFFFF )
444	{
445	root->ascender = face->os2.sTypoAscender;
446	root->descender = -face->os2.sTypoDescender;
447	root->height = root->ascender + root->descender +
448	face->os2.sTypoLineGap;
449	}
450	else
451	{
452	root->ascender = face->horizontal.Ascender;
453	root->descender = face->horizontal.Descender;
454	root->height = root->ascender + root->descender +
455	face->horizontal.Line_Gap;
456	}
457
458	root->max_advance_width = face->horizontal.advance_Width_Max;
459
460	root->max_advance_height = face->vertical_info
461	? face->vertical.advance_Height_Max
462	: root->height;
463
464	root->underline_position = face->postscript.underlinePosition;
465	root->underline_thickness = face->postscript.underlineThickness;
466
467	/* root->max_points -- already set up */
468	/* root->max_contours -- already set up */
469	}
470
471	Exit:
472	return error;
473	}
474
475
476	#undef LOAD_
477
478
479	LOCAL_FUNC
480	void SFNT_Done_Face( TT_Face face )
481	{
482	FT_Memory memory = face->root.memory;
483	SFNT_Interface* sfnt = (SFNT_Interface*)face->sfnt;
484
485
486	if ( sfnt )
487	{
488	/* destroy the postscript names table if it is loaded */
489	if ( sfnt->free_psnames )
490	sfnt->free_psnames( face );
491
492	/* destroy the embedded bitmaps table if it is loaded */
493	if ( sfnt->free_sbits )
494	sfnt->free_sbits( face );
495	}
496
497	/* freeing the kerning table */
498	FREE( face->kern_pairs );
499	face->num_kern_pairs = 0;
500
501	/* freeing the collection table */
502	FREE( face->ttc_header.offsets );
503	face->ttc_header.count = 0;
504
505	/* freeing table directory */
506	FREE( face->dir_tables );
507	face->num_tables = 0;
508
509	/* freeing the character mapping tables */
510	if ( sfnt && sfnt->load_charmaps )
511	{
512	FT_UShort n;
513
514
515	for ( n = 0; n < face->num_charmaps; n++ )
516	sfnt->free_charmap( face, &face->charmaps[n].cmap );
517	}
518
519	FREE( face->charmaps );
520	face->num_charmaps = 0;
521
522	FREE( face->root.charmaps );
523	face->root.num_charmaps = 0;
524	face->root.charmap = 0;
525
526	/* freeing the horizontal metrics */
527	FREE( face->horizontal.long_metrics );
528	FREE( face->horizontal.short_metrics );
529
530	/* freeing the vertical ones, if any */
531	if ( face->vertical_info )
532	{
533	FREE( face->vertical.long_metrics );
534	FREE( face->vertical.short_metrics );
535	face->vertical_info = 0;
536	}
537
538	/* freeing the gasp table */
539	FREE( face->gasp.gaspRanges );
540	face->gasp.numRanges = 0;
541
542	/* freeing the name table */
543	sfnt->free_names( face );
544
545	/* freeing the hdmx table */
546	sfnt->free_hdmx( face );
547
548	/* freeing family and style name */
549	FREE( face->root.family_name );
550	FREE( face->root.style_name );
551
552	/* freeing sbit size table */
553	face->root.num_fixed_sizes = 0;
554	if ( face->root.available_sizes )
555	FREE( face->root.available_sizes );
556
557	face->sfnt = 0;
558	}
559
560
561	/* END */