t42objs.h File Reference

#include <ft2build.h>
#include "t42types.h"

Include dependency graph for t42objs.h:

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Go to the source code of this file.

Classes
struct	T42_SizeRec_
struct	T42_GlyphSlotRec_
struct	T42_DriverRec_

Typedefs
typedef FT_BEGIN_HEADER struct T42_SizeRec_	T42_SizeRec
typedef FT_BEGIN_HEADER struct T42_SizeRec_ *	T42_Size
typedef struct T42_GlyphSlotRec_	T42_GlyphSlotRec
typedef struct T42_GlyphSlotRec_ *	T42_GlyphSlot
typedef struct T42_DriverRec_	T42_DriverRec
typedef struct T42_DriverRec_ *	T42_Driver

Functions
	T42_Face_Init (FT_Stream stream, FT_Face face, FT_Int face_index, FT_Int num_params, FT_Parameter *params)
	T42_Face_Done (FT_Face face)
	T42_Size_Init (FT_Size size)
	T42_Size_Request (FT_Size size, FT_Size_Request req)
	T42_Size_Select (FT_Size size, FT_ULong strike_index)
	T42_Size_Done (FT_Size size)
	T42_GlyphSlot_Init (FT_GlyphSlot slot)
	T42_GlyphSlot_Load (FT_GlyphSlot glyph, FT_Size size, FT_UInt glyph_index, FT_Int32 load_flags)
	T42_GlyphSlot_Done (FT_GlyphSlot slot)
	T42_Driver_Init (FT_Module module)
	T42_Driver_Done (FT_Module module)

Typedef Documentation

T42_Driver

typedef struct T42_DriverRec_ * T42_Driver

T42_DriverRec

typedef struct T42_DriverRec_ T42_DriverRec

T42_GlyphSlot

typedef struct T42_GlyphSlotRec_ * T42_GlyphSlot

T42_GlyphSlotRec

typedef struct T42_GlyphSlotRec_ T42_GlyphSlotRec

T42_Size

typedef FT_BEGIN_HEADER struct T42_SizeRec_ * T42_Size

T42_SizeRec

typedef FT_BEGIN_HEADER struct T42_SizeRec_ T42_SizeRec

Function Documentation

T42_Driver_Done()

T42_Driver_Done

(

FT_Module

module

)

Definition at line 497 of file t42objs.c.

  {
    FT_UNUSED( module );
  }

T42_Driver_Init()

T42_Driver_Init

(

FT_Module

module

)

Definition at line 477 of file t42objs.c.

  {
    T42_Driver  driver = (T42_Driver)module;
    FT_Module   ttmodule;
 
 
    ttmodule = FT_Get_Module( module->library, "truetype" );
    if ( !ttmodule )
    {
      FT_ERROR(( "T42_Driver_Init: cannot access `truetype' module\n" ));
      return FT_THROW( Missing_Module );
    }
 
    driver->ttclazz = (FT_Driver_Class)ttmodule->clazz;
 
    return FT_Err_Ok;
  }

T42_Face_Done()

T42_Face_Done

(

FT_Face

face

)

Definition at line 406 of file t42objs.c.

  {
    T42_Face     face = (T42_Face)t42face;
    T1_Font      type1;
    PS_FontInfo  info;
    FT_Memory    memory;
 
 
    if ( !face )
      return;
 
    type1  = &face->type1;
    info   = &type1->font_info;
    memory = face->root.memory;
 
    /* delete internal ttf face prior to freeing face->ttf_data */
    if ( face->ttf_face )
      FT_Done_Face( face->ttf_face );
 
    /* release font info strings */
    FT_FREE( info->version );
    FT_FREE( info->notice );
    FT_FREE( info->full_name );
    FT_FREE( info->family_name );
    FT_FREE( info->weight );
 
    /* release top dictionary */
    FT_FREE( type1->charstrings_len );
    FT_FREE( type1->charstrings );
    FT_FREE( type1->glyph_names );
 
    FT_FREE( type1->charstrings_block );
    FT_FREE( type1->glyph_names_block );
 
    FT_FREE( type1->encoding.char_index );
    FT_FREE( type1->encoding.char_name );
    FT_FREE( type1->font_name );
 
    FT_FREE( face->ttf_data );
 
#if 0
    /* release afm data if present */
    if ( face->afm_data )
      T1_Done_AFM( memory, (T1_AFM*)face->afm_data );
#endif
 
    /* release unicode map, if any */
    FT_FREE( face->unicode_map.maps );
    face->unicode_map.num_maps = 0;
 
    face->root.family_name = NULL;
    face->root.style_name  = NULL;
  }

T42_Face_Init()

T42_Face_Init	(	FT_Stream	stream,
		FT_Face	face,
		FT_Int	face_index,
		FT_Int	num_params,
		FT_Parameter *	params
	)

Definition at line 164 of file t42objs.c.

  {
    T42_Face            face  = (T42_Face)t42face;
    FT_Error            error;
    FT_Service_PsCMaps  psnames;
    PSAux_Service       psaux;
    FT_Face             root  = (FT_Face)&face->root;
    T1_Font             type1 = &face->type1;
    PS_FontInfo         info  = &type1->font_info;
 
    FT_UNUSED( num_params );
    FT_UNUSED( params );
    FT_UNUSED( stream );
 
 
    face->ttf_face       = NULL;
    face->root.num_faces = 1;
 
    FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS );
    face->psnames = psnames;
 
    face->psaux = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ),
                                           "psaux" );
    psaux = (PSAux_Service)face->psaux;
    if ( !psaux )
    {
      FT_ERROR(( "T42_Face_Init: cannot access `psaux' module\n" ));
      error = FT_THROW( Missing_Module );
      goto Exit;
    }
 
    FT_TRACE2(( "Type 42 driver\n" ));
 
    /* open the tokenizer, this will also check the font format */
    error = T42_Open_Face( face );
    if ( error )
      goto Exit;
 
    /* if we just wanted to check the format, leave successfully now */
    if ( face_index < 0 )
      goto Exit;
 
    /* check the face index */
    if ( ( face_index & 0xFFFF ) > 0 )
    {
      FT_ERROR(( "T42_Face_Init: invalid face index\n" ));
      error = FT_THROW( Invalid_Argument );
      goto Exit;
    }
 
    /* Now load the font program into the face object */
 
    /* Init the face object fields */
    /* Now set up root face fields */
 
    root->num_glyphs   = type1->num_glyphs;
    root->num_charmaps = 0;
    root->face_index   = 0;
 
    root->face_flags |= FT_FACE_FLAG_SCALABLE    |
                        FT_FACE_FLAG_HORIZONTAL  |
                        FT_FACE_FLAG_GLYPH_NAMES;
 
    if ( info->is_fixed_pitch )
      root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
 
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
    root->face_flags |= FT_FACE_FLAG_HINTER;
#endif
 
    /* XXX: TODO -- add kerning with .afm support */
 
    /* get style name -- be careful, some broken fonts only */
    /* have a `/FontName' dictionary entry!                 */
    root->family_name = info->family_name;
    /* assume "Regular" style if we don't know better */
    root->style_name = (char *)"Regular";
    if ( root->family_name )
    {
      char*  full   = info->full_name;
      char*  family = root->family_name;
 
 
      if ( full )
      {
        while ( *full )
        {
          if ( *full == *family )
          {
            family++;
            full++;
          }
          else
          {
            if ( *full == ' ' || *full == '-' )
              full++;
            else if ( *family == ' ' || *family == '-' )
              family++;
            else
            {
              if ( !*family )
                root->style_name = full;
              break;
            }
          }
        }
      }
    }
    else
    {
      /* do we have a `/FontName'? */
      if ( type1->font_name )
        root->family_name = type1->font_name;
    }
 
    /* no embedded bitmap support */
    root->num_fixed_sizes = 0;
    root->available_sizes = NULL;
 
    /* Load the TTF font embedded in the T42 font */
    {
      FT_Open_Args  args;
 
 
      args.flags       = FT_OPEN_MEMORY | FT_OPEN_DRIVER;
      args.driver      = FT_Get_Module( FT_FACE_LIBRARY( face ),
                                        "truetype" );
      args.memory_base = face->ttf_data;
      args.memory_size = face->ttf_size;
 
      if ( num_params )
      {
        args.flags     |= FT_OPEN_PARAMS;
        args.num_params = num_params;
        args.params     = params;
      }
 
      error = FT_Open_Face( FT_FACE_LIBRARY( face ),
                            &args, 0, &face->ttf_face );
    }
 
    if ( error )
      goto Exit;
 
    FT_Done_Size( face->ttf_face->size );
 
    /* Ignore info in FontInfo dictionary and use the info from the  */
    /* loaded TTF font.  The PostScript interpreter also ignores it. */
    root->bbox         = face->ttf_face->bbox;
    root->units_per_EM = face->ttf_face->units_per_EM;
 
    root->ascender  = face->ttf_face->ascender;
    root->descender = face->ttf_face->descender;
    root->height    = face->ttf_face->height;
 
    root->max_advance_width  = face->ttf_face->max_advance_width;
    root->max_advance_height = face->ttf_face->max_advance_height;
 
    root->underline_position  = (FT_Short)info->underline_position;
    root->underline_thickness = (FT_Short)info->underline_thickness;
 
    /* compute style flags */
    root->style_flags = 0;
    if ( info->italic_angle )
      root->style_flags |= FT_STYLE_FLAG_ITALIC;
 
    if ( face->ttf_face->style_flags & FT_STYLE_FLAG_BOLD )
      root->style_flags |= FT_STYLE_FLAG_BOLD;
 
    if ( face->ttf_face->face_flags & FT_FACE_FLAG_VERTICAL )
      root->face_flags |= FT_FACE_FLAG_VERTICAL;
 
    {
      if ( psnames )
      {
        FT_CharMapRec    charmap;
        T1_CMap_Classes  cmap_classes = psaux->t1_cmap_classes;
        FT_CMap_Class    clazz;
 
 
        charmap.face = root;
 
        /* first of all, try to synthesize a Unicode charmap */
        charmap.platform_id = TT_PLATFORM_MICROSOFT;
        charmap.encoding_id = TT_MS_ID_UNICODE_CS;
        charmap.encoding    = FT_ENCODING_UNICODE;
 
        error = FT_CMap_New( cmap_classes->unicode, NULL, &charmap, NULL );
        if ( error                                      &&
             FT_ERR_NEQ( error, No_Unicode_Glyph_Name ) &&
             FT_ERR_NEQ( error, Unimplemented_Feature ) )
          goto Exit;
        error = FT_Err_Ok;
 
        /* now, generate an Adobe Standard encoding when appropriate */
        charmap.platform_id = TT_PLATFORM_ADOBE;
        clazz               = NULL;
 
        switch ( type1->encoding_type )
        {
        case T1_ENCODING_TYPE_STANDARD:
          charmap.encoding    = FT_ENCODING_ADOBE_STANDARD;
          charmap.encoding_id = TT_ADOBE_ID_STANDARD;
          clazz               = cmap_classes->standard;
          break;
 
        case T1_ENCODING_TYPE_EXPERT:
          charmap.encoding    = FT_ENCODING_ADOBE_EXPERT;
          charmap.encoding_id = TT_ADOBE_ID_EXPERT;
          clazz               = cmap_classes->expert;
          break;
 
        case T1_ENCODING_TYPE_ARRAY:
          charmap.encoding    = FT_ENCODING_ADOBE_CUSTOM;
          charmap.encoding_id = TT_ADOBE_ID_CUSTOM;
          clazz               = cmap_classes->custom;
          break;
 
        case T1_ENCODING_TYPE_ISOLATIN1:
          charmap.encoding    = FT_ENCODING_ADOBE_LATIN_1;
          charmap.encoding_id = TT_ADOBE_ID_LATIN_1;
          clazz               = cmap_classes->unicode;
          break;
 
        default:
          ;
        }
 
        if ( clazz )
          error = FT_CMap_New( clazz, NULL, &charmap, NULL );
      }
    }
  Exit:
    return error;
  }

T42_GlyphSlot_Done()

T42_GlyphSlot_Done

(

FT_GlyphSlot

slot

)

Definition at line 605 of file t42objs.c.

  {
    T42_GlyphSlot  slot = (T42_GlyphSlot)t42slot;
 
 
    FT_Done_GlyphSlot( slot->ttslot );
  }

T42_GlyphSlot_Init()

T42_GlyphSlot_Init

(

FT_GlyphSlot

slot

)

Definition at line 580 of file t42objs.c.

  {
    T42_GlyphSlot  slot    = (T42_GlyphSlot)t42slot;
    FT_Face        face    = t42slot->face;
    T42_Face       t42face = (T42_Face)face;
    FT_GlyphSlot   ttslot;
    FT_Error       error   = FT_Err_Ok;
 
 
    if ( !face->glyph )
    {
      /* First glyph slot for this face */
      slot->ttslot = t42face->ttf_face->glyph;
    }
    else
    {
      error = FT_New_GlyphSlot( t42face->ttf_face, &ttslot );
      slot->ttslot = ttslot;
    }
 
    return error;
  }

T42_GlyphSlot_Load()

T42_GlyphSlot_Load	(	FT_GlyphSlot	glyph,
		FT_Size	size,
		FT_UInt	glyph_index,
		FT_Int32	load_flags
	)

Definition at line 640 of file t42objs.c.

  {
    FT_Error         error;
    T42_GlyphSlot    t42slot = (T42_GlyphSlot)glyph;
    T42_Size         t42size = (T42_Size)size;
    T42_Face         t42face = (T42_Face)size->face;
    FT_Driver_Class  ttclazz = ((T42_Driver)glyph->face->driver)->ttclazz;
 
 
    FT_TRACE1(( "T42_GlyphSlot_Load: glyph index %d\n", glyph_index ));
 
    /* map T42 glyph index to embedded TTF's glyph index */
    glyph_index = (FT_UInt)ft_strtol(
                    (const char *)t42face->type1.charstrings[glyph_index],
                    NULL, 10 );
 
    t42_glyphslot_clear( t42slot->ttslot );
    error = ttclazz->load_glyph( t42slot->ttslot,
                                 t42size->ttsize,
                                 glyph_index,
                                 load_flags | FT_LOAD_NO_BITMAP );
 
    if ( !error )
    {
      glyph->metrics = t42slot->ttslot->metrics;
 
      glyph->linearHoriAdvance = t42slot->ttslot->linearHoriAdvance;
      glyph->linearVertAdvance = t42slot->ttslot->linearVertAdvance;
 
      glyph->format  = t42slot->ttslot->format;
      glyph->outline = t42slot->ttslot->outline;
 
      glyph->bitmap      = t42slot->ttslot->bitmap;
      glyph->bitmap_left = t42slot->ttslot->bitmap_left;
      glyph->bitmap_top  = t42slot->ttslot->bitmap_top;
 
      glyph->num_subglyphs = t42slot->ttslot->num_subglyphs;
      glyph->subglyphs     = t42slot->ttslot->subglyphs;
 
      glyph->control_data  = t42slot->ttslot->control_data;
      glyph->control_len   = t42slot->ttslot->control_len;
    }
 
    return error;
  }

T42_Size_Done()

T42_Size_Done

(

FT_Size

size

)

Definition at line 562 of file t42objs.c.

  {
    T42_Size     size    = (T42_Size)t42size;
    FT_Face      face    = t42size->face;
    T42_Face     t42face = (T42_Face)face;
    FT_ListNode  node;
 
 
    node = FT_List_Find( &t42face->ttf_face->sizes_list, size->ttsize );
    if ( node )
    {
      FT_Done_Size( size->ttsize );
      size->ttsize = NULL;
    }
  }

T42_Size_Init()

T42_Size_Init

(

FT_Size

size

)

Definition at line 504 of file t42objs.c.

  {
    T42_Size  t42size = (T42_Size)size;
    FT_Face   face    = size->face;
    T42_Face  t42face = (T42_Face)face;
    FT_Size   ttsize;
    FT_Error  error;
 
 
    error = FT_New_Size( t42face->ttf_face, &ttsize );
    t42size->ttsize = ttsize;
 
    FT_Activate_Size( ttsize );
 
    return error;
  }

T42_Size_Request()

T42_Size_Request	(	FT_Size	size,
		FT_Size_Request	req
	)

Definition at line 523 of file t42objs.c.

  {
    T42_Size  size = (T42_Size)t42size;
    T42_Face  face = (T42_Face)t42size->face;
    FT_Error  error;
 
 
    FT_Activate_Size( size->ttsize );
 
    error = FT_Request_Size( face->ttf_face, req );
    if ( !error )
      t42size->metrics = face->ttf_face->size->metrics;
 
    return error;
  }

T42_Size_Select()

T42_Size_Select	(	FT_Size	size,
		FT_ULong	strike_index
	)

Definition at line 542 of file t42objs.c.

  {
    T42_Size  size = (T42_Size)t42size;
    T42_Face  face = (T42_Face)t42size->face;
    FT_Error  error;
 
 
    FT_Activate_Size( size->ttsize );
 
    error = FT_Select_Size( face->ttf_face, (FT_Int)strike_index );
    if ( !error )
      t42size->metrics = face->ttf_face->size->metrics;
 
    return error;
 
  }