pfr_face_init( FT_Stream stream,
FT_Face pfrface,
FT_Int face_index,
FT_Int num_params,
FT_Parameter* params )
{
PFR_Face face = (PFR_Face)pfrface;
FT_Error error;
FT_UNUSED( num_params );
FT_UNUSED( params );
/* load the header and check it */
error = pfr_header_load( &face->header, stream );
if ( error )
goto Exit;
if ( !pfr_header_check( &face->header ) )
{
FT_TRACE4(( "pfr_face_init: not a valid PFR font\n" ));
error = PFR_Err_Unknown_File_Format;
goto Exit;
}
/* check face index */
{
FT_UInt num_faces;
error = pfr_log_font_count( stream,
face->header.log_dir_offset,
&num_faces );
if ( error )
goto Exit;
pfrface->num_faces = num_faces;
}
if ( face_index < 0 )
goto Exit;
if ( face_index >= pfrface->num_faces )
{
FT_ERROR(( "pfr_face_init: invalid face index\n" ));
error = PFR_Err_Invalid_Argument;
goto Exit;
}
/* load the face */
error = pfr_log_font_load(
&face->log_font, stream, face_index,
face->header.log_dir_offset,
FT_BOOL( face->header.phy_font_max_size_high != 0 ) );
if ( error )
goto Exit;
/* now load the physical font descriptor */
error = pfr_phy_font_load( &face->phy_font, stream,
face->log_font.phys_offset,
face->log_font.phys_size );
if ( error )
goto Exit;
/* now, set-up all root face fields */
{
PFR_PhyFont phy_font = &face->phy_font;
pfrface->face_index = face_index;
pfrface->num_glyphs = phy_font->num_chars;
pfrface->face_flags = FT_FACE_FLAG_SCALABLE;
if ( (phy_font->flags & PFR_PHY_PROPORTIONAL) == 0 )
pfrface->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
if ( phy_font->flags & PFR_PHY_VERTICAL )
pfrface->face_flags |= FT_FACE_FLAG_VERTICAL;
else
pfrface->face_flags |= FT_FACE_FLAG_HORIZONTAL;
if ( phy_font->num_strikes > 0 )
pfrface->face_flags |= FT_FACE_FLAG_FIXED_SIZES;
if ( phy_font->num_kern_pairs > 0 )
pfrface->face_flags |= FT_FACE_FLAG_KERNING;
/* If no family name was found in the "undocumented" auxiliary
* data, use the font ID instead. This sucks but is better than
* nothing.
*/
pfrface->family_name = phy_font->family_name;
if ( pfrface->family_name == NULL )
pfrface->family_name = phy_font->font_id;
/* note that the style name can be NULL in certain PFR fonts,
* probably meaning "Regular"
*/
pfrface->style_name = phy_font->style_name;
pfrface->num_fixed_sizes = 0;
pfrface->available_sizes = 0;
pfrface->bbox = phy_font->bbox;
pfrface->units_per_EM = (FT_UShort)phy_font->outline_resolution;
pfrface->ascender = (FT_Short) phy_font->bbox.yMax;
pfrface->descender = (FT_Short) phy_font->bbox.yMin;
pfrface->height = (FT_Short)(
( ( pfrface->ascender - pfrface->descender ) * 12 ) / 10 );
if ( phy_font->num_strikes > 0 )
{
FT_UInt n, count = phy_font->num_strikes;
FT_Bitmap_Size* size;
PFR_Strike strike;
FT_Memory memory = pfrface->stream->memory;
if ( FT_NEW_ARRAY( pfrface->available_sizes, count ) )
goto Exit;
size = pfrface->available_sizes;
strike = phy_font->strikes;
for ( n = 0; n < count; n++, size++, strike++ )
{
size->height = (FT_UShort)strike->y_ppm;
size->width = (FT_UShort)strike->x_ppm;
}
pfrface->num_fixed_sizes = count;
}
/* now compute maximum advance width */
if ( ( phy_font->flags & PFR_PHY_PROPORTIONAL ) == 0 )
pfrface->max_advance_width = (FT_Short)phy_font->standard_advance;
else
{
FT_Int max = 0;
FT_UInt count = phy_font->num_chars;
PFR_Char gchar = phy_font->chars;
for ( ; count > 0; count--, gchar++ )
{
if ( max < gchar->advance )
max = gchar->advance;
}
pfrface->max_advance_width = (FT_Short)max;
}
pfrface->max_advance_height = pfrface->height;
pfrface->underline_position = (FT_Short)( -pfrface->units_per_EM / 10 );
pfrface->underline_thickness = (FT_Short)( pfrface->units_per_EM / 30 );
/* create charmap */
{
FT_CharMapRec charmap;
charmap.face = pfrface;
charmap.platform_id = 3;
charmap.encoding_id = 1;
charmap.encoding = FT_ENCODING_UNICODE;
FT_CMap_New( &pfr_cmap_class_rec, NULL, &charmap, NULL );
#if 0
/* Select default charmap */
if ( pfrface->num_charmaps )
pfrface->charmap = pfrface->charmaps[0];
#endif
}
/* check whether we've loaded any kerning pairs */
if ( phy_font->num_kern_pairs )
pfrface->face_flags |= FT_FACE_FLAG_KERNING;
}
Exit:
return error;
}
pfr_face_init( FT_Stream stream,
PFR_Face face,
FT_Int face_index,
FT_Int num_params,
FT_Parameter* params )
{
FT_Error error;
FT_UNUSED( num_params );
FT_UNUSED( params );
/* load the header and check it */
error = pfr_header_load( &face->header, stream );
if ( error )
goto Exit;
if ( !pfr_header_check( &face->header ) )
{
FT_TRACE4(( "pfr_face_init: not a valid PFR font\n" ));
error = PFR_Err_Unknown_File_Format;
goto Exit;
}
/* check face index */
{
FT_UInt num_faces;
error = pfr_log_font_count( stream,
face->header.log_dir_offset,
&num_faces );
if ( error )
goto Exit;
face->root.num_faces = num_faces;
}
if ( face_index < 0 )
goto Exit;
if ( face_index >= face->root.num_faces )
{
FT_ERROR(( "pfr_face_init: invalid face index\n" ));
error = PFR_Err_Invalid_Argument;
goto Exit;
}
/* load the face */
error = pfr_log_font_load(
&face->log_font, stream, face_index,
face->header.log_dir_offset,
FT_BOOL( face->header.phy_font_max_size_high != 0 ) );
if ( error )
goto Exit;
/* now load the physical font descriptor */
error = pfr_phy_font_load( &face->phy_font, stream,
face->log_font.phys_offset,
face->log_font.phys_size );
if ( error )
goto Exit;
/* now, set-up all root face fields */
{
FT_Face root = FT_FACE( face );
PFR_PhyFont phy_font = &face->phy_font;
root->face_index = face_index;
root->num_glyphs = phy_font->num_chars;
root->face_flags = FT_FACE_FLAG_SCALABLE;
if ( (phy_font->flags & PFR_PHY_PROPORTIONAL) == 0 )
root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
if ( phy_font->flags & PFR_PHY_VERTICAL )
root->face_flags |= FT_FACE_FLAG_VERTICAL;
else
root->face_flags |= FT_FACE_FLAG_HORIZONTAL;
if ( phy_font->num_strikes > 0 )
root->face_flags |= FT_FACE_FLAG_FIXED_SIZES;
if ( phy_font->num_kern_pairs > 0 )
root->face_flags |= FT_FACE_FLAG_KERNING;
root->family_name = phy_font->font_id;
root->style_name = NULL; /* no style name in font file */
root->num_fixed_sizes = 0;
root->available_sizes = 0;
root->bbox = phy_font->bbox;
root->units_per_EM = (FT_UShort)phy_font->outline_resolution;
root->ascender = (FT_Short) phy_font->bbox.yMax;
root->descender = (FT_Short) phy_font->bbox.yMin;
root->height = (FT_Short)
( ( ( root->ascender - root->descender ) * 12 )
/ 10 );
/* now compute maximum advance width */
if ( ( phy_font->flags & PFR_PHY_PROPORTIONAL ) == 0 )
root->max_advance_width = (FT_Short)phy_font->standard_advance;
else
{
FT_Int max = 0;
FT_UInt count = phy_font->num_chars;
PFR_Char gchar = phy_font->chars;
for ( ; count > 0; count--, gchar++ )
{
if ( max < gchar->advance )
max = gchar->advance;
}
root->max_advance_width = (FT_Short)max;
}
root->max_advance_height = root->height;
root->underline_position = (FT_Short)( - root->units_per_EM / 10 );
root->underline_thickness = (FT_Short)( root->units_per_EM / 30 );
/* create charmap */
{
FT_CharMapRec charmap;
charmap.face = root;
charmap.platform_id = 3;
charmap.encoding_id = 1;
charmap.encoding = FT_ENCODING_UNICODE;
FT_CMap_New( &pfr_cmap_class_rec, NULL, &charmap, NULL );
#if 0
/* Select default charmap */
if (root->num_charmaps)
root->charmap = root->charmaps[0];
#endif
}
/* check whether we've loaded any kerning pairs */
if ( phy_font->num_kern_pairs )
root->face_flags |= FT_FACE_FLAG_KERNING;
}
Exit:
return error;
}
