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Diffstat (limited to 'src/3rdparty/freetype/src/sfnt/sfobjs.c')
-rw-r--r--src/3rdparty/freetype/src/sfnt/sfobjs.c635
1 files changed, 531 insertions, 104 deletions
diff --git a/src/3rdparty/freetype/src/sfnt/sfobjs.c b/src/3rdparty/freetype/src/sfnt/sfobjs.c
index b74b1a93a9..70b988d650 100644
--- a/src/3rdparty/freetype/src/sfnt/sfobjs.c
+++ b/src/3rdparty/freetype/src/sfnt/sfobjs.c
@@ -4,7 +4,7 @@
/* */
/* SFNT object management (base). */
/* */
-/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by */
+/* Copyright 1996-2008, 2010-2014 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -27,6 +27,7 @@
#include FT_TRUETYPE_TAGS_H
#include FT_SERVICE_POSTSCRIPT_CMAPS_H
#include FT_SFNT_NAMES_H
+#include FT_GZIP_H
#include "sferrors.h"
#ifdef TT_CONFIG_OPTION_BDF
@@ -50,9 +51,9 @@
tt_name_entry_ascii_from_utf16( TT_NameEntry entry,
FT_Memory memory )
{
- FT_String* string;
+ FT_String* string = NULL;
FT_UInt len, code, n;
- FT_Byte* read = (FT_Byte*)entry->string;
+ FT_Byte* read = (FT_Byte*)entry->string;
FT_Error error;
@@ -64,13 +65,17 @@
for ( n = 0; n < len; n++ )
{
code = FT_NEXT_USHORT( read );
+
+ if ( code == 0 )
+ break;
+
if ( code < 32 || code > 127 )
code = '?';
string[n] = (char)code;
}
- string[len] = 0;
+ string[n] = 0;
return string;
}
@@ -81,9 +86,9 @@
tt_name_entry_ascii_from_other( TT_NameEntry entry,
FT_Memory memory )
{
- FT_String* string;
+ FT_String* string = NULL;
FT_UInt len, code, n;
- FT_Byte* read = (FT_Byte*)entry->string;
+ FT_Byte* read = (FT_Byte*)entry->string;
FT_Error error;
@@ -95,13 +100,17 @@
for ( n = 0; n < len; n++ )
{
code = *read++;
+
+ if ( code == 0 )
+ break;
+
if ( code < 32 || code > 127 )
code = '?';
string[n] = (char)code;
}
- string[len] = 0;
+ string[n] = 0;
return string;
}
@@ -137,7 +146,7 @@
FT_String** name )
{
FT_Memory memory = face->root.memory;
- FT_Error error = SFNT_Err_Ok;
+ FT_Error error = FT_Err_Ok;
FT_String* result = NULL;
FT_UShort n;
TT_NameEntryRec* rec;
@@ -160,7 +169,7 @@
/* According to the OpenType 1.3 specification, only Microsoft or */
/* Apple platform IDs might be used in the `name' table. The */
/* `Unicode' platform is reserved for the `cmap' table, and the */
- /* `Iso' one is deprecated. */
+ /* `ISO' one is deprecated. */
/* */
/* However, the Apple TrueType specification doesn't say the same */
/* thing and goes to suggest that all Unicode `name' table entries */
@@ -339,6 +348,383 @@
}
+#define WRITE_USHORT( p, v ) \
+ do \
+ { \
+ *(p)++ = (FT_Byte)( (v) >> 8 ); \
+ *(p)++ = (FT_Byte)( (v) >> 0 ); \
+ \
+ } while ( 0 )
+
+#define WRITE_ULONG( p, v ) \
+ do \
+ { \
+ *(p)++ = (FT_Byte)( (v) >> 24 ); \
+ *(p)++ = (FT_Byte)( (v) >> 16 ); \
+ *(p)++ = (FT_Byte)( (v) >> 8 ); \
+ *(p)++ = (FT_Byte)( (v) >> 0 ); \
+ \
+ } while ( 0 )
+
+
+ static void
+ sfnt_stream_close( FT_Stream stream )
+ {
+ FT_Memory memory = stream->memory;
+
+
+ FT_FREE( stream->base );
+
+ stream->size = 0;
+ stream->base = 0;
+ stream->close = 0;
+ }
+
+
+ FT_CALLBACK_DEF( int )
+ compare_offsets( const void* a,
+ const void* b )
+ {
+ WOFF_Table table1 = *(WOFF_Table*)a;
+ WOFF_Table table2 = *(WOFF_Table*)b;
+
+ FT_ULong offset1 = table1->Offset;
+ FT_ULong offset2 = table2->Offset;
+
+
+ if ( offset1 > offset2 )
+ return 1;
+ else if ( offset1 < offset2 )
+ return -1;
+ else
+ return 0;
+ }
+
+
+ /* Replace `face->root.stream' with a stream containing the extracted */
+ /* SFNT of a WOFF font. */
+
+ static FT_Error
+ woff_open_font( FT_Stream stream,
+ TT_Face face )
+ {
+ FT_Memory memory = stream->memory;
+ FT_Error error = FT_Err_Ok;
+
+ WOFF_HeaderRec woff;
+ WOFF_Table tables = NULL;
+ WOFF_Table* indices = NULL;
+
+ FT_ULong woff_offset;
+
+ FT_Byte* sfnt = NULL;
+ FT_Stream sfnt_stream = NULL;
+
+ FT_Byte* sfnt_header;
+ FT_ULong sfnt_offset;
+
+ FT_Int nn;
+ FT_ULong old_tag = 0;
+
+ static const FT_Frame_Field woff_header_fields[] =
+ {
+#undef FT_STRUCTURE
+#define FT_STRUCTURE WOFF_HeaderRec
+
+ FT_FRAME_START( 44 ),
+ FT_FRAME_ULONG ( signature ),
+ FT_FRAME_ULONG ( flavor ),
+ FT_FRAME_ULONG ( length ),
+ FT_FRAME_USHORT( num_tables ),
+ FT_FRAME_USHORT( reserved ),
+ FT_FRAME_ULONG ( totalSfntSize ),
+ FT_FRAME_USHORT( majorVersion ),
+ FT_FRAME_USHORT( minorVersion ),
+ FT_FRAME_ULONG ( metaOffset ),
+ FT_FRAME_ULONG ( metaLength ),
+ FT_FRAME_ULONG ( metaOrigLength ),
+ FT_FRAME_ULONG ( privOffset ),
+ FT_FRAME_ULONG ( privLength ),
+ FT_FRAME_END
+ };
+
+
+ FT_ASSERT( stream == face->root.stream );
+ FT_ASSERT( FT_STREAM_POS() == 0 );
+
+ if ( FT_STREAM_READ_FIELDS( woff_header_fields, &woff ) )
+ return error;
+
+ /* Make sure we don't recurse back here or hit TTC code. */
+ if ( woff.flavor == TTAG_wOFF || woff.flavor == TTAG_ttcf )
+ return FT_THROW( Invalid_Table );
+
+ /* Miscellaneous checks. */
+ if ( woff.length != stream->size ||
+ woff.num_tables == 0 ||
+ 44 + woff.num_tables * 20UL >= woff.length ||
+ 12 + woff.num_tables * 16UL >= woff.totalSfntSize ||
+ ( woff.totalSfntSize & 3 ) != 0 ||
+ ( woff.metaOffset == 0 && ( woff.metaLength != 0 ||
+ woff.metaOrigLength != 0 ) ) ||
+ ( woff.metaLength != 0 && woff.metaOrigLength == 0 ) ||
+ ( woff.privOffset == 0 && woff.privLength != 0 ) )
+ return FT_THROW( Invalid_Table );
+
+ if ( FT_ALLOC( sfnt, woff.totalSfntSize ) ||
+ FT_NEW( sfnt_stream ) )
+ goto Exit;
+
+ sfnt_header = sfnt;
+
+ /* Write sfnt header. */
+ {
+ FT_UInt searchRange, entrySelector, rangeShift, x;
+
+
+ x = woff.num_tables;
+ entrySelector = 0;
+ while ( x )
+ {
+ x >>= 1;
+ entrySelector += 1;
+ }
+ entrySelector--;
+
+ searchRange = ( 1 << entrySelector ) * 16;
+ rangeShift = woff.num_tables * 16 - searchRange;
+
+ WRITE_ULONG ( sfnt_header, woff.flavor );
+ WRITE_USHORT( sfnt_header, woff.num_tables );
+ WRITE_USHORT( sfnt_header, searchRange );
+ WRITE_USHORT( sfnt_header, entrySelector );
+ WRITE_USHORT( sfnt_header, rangeShift );
+ }
+
+ /* While the entries in the sfnt header must be sorted by the */
+ /* tag value, the tables themselves are not. We thus have to */
+ /* sort them by offset and check that they don't overlap. */
+
+ if ( FT_NEW_ARRAY( tables, woff.num_tables ) ||
+ FT_NEW_ARRAY( indices, woff.num_tables ) )
+ goto Exit;
+
+ FT_TRACE2(( "\n"
+ " tag offset compLen origLen checksum\n"
+ " -------------------------------------------\n" ));
+
+ if ( FT_FRAME_ENTER( 20L * woff.num_tables ) )
+ goto Exit;
+
+ for ( nn = 0; nn < woff.num_tables; nn++ )
+ {
+ WOFF_Table table = tables + nn;
+
+ table->Tag = FT_GET_TAG4();
+ table->Offset = FT_GET_ULONG();
+ table->CompLength = FT_GET_ULONG();
+ table->OrigLength = FT_GET_ULONG();
+ table->CheckSum = FT_GET_ULONG();
+
+ FT_TRACE2(( " %c%c%c%c %08lx %08lx %08lx %08lx\n",
+ (FT_Char)( table->Tag >> 24 ),
+ (FT_Char)( table->Tag >> 16 ),
+ (FT_Char)( table->Tag >> 8 ),
+ (FT_Char)( table->Tag ),
+ table->Offset,
+ table->CompLength,
+ table->OrigLength,
+ table->CheckSum ));
+
+ if ( table->Tag <= old_tag )
+ {
+ FT_FRAME_EXIT();
+ error = FT_THROW( Invalid_Table );
+ goto Exit;
+ }
+
+ old_tag = table->Tag;
+ indices[nn] = table;
+ }
+
+ FT_FRAME_EXIT();
+
+ /* Sort by offset. */
+
+ ft_qsort( indices,
+ woff.num_tables,
+ sizeof ( WOFF_Table ),
+ compare_offsets );
+
+ /* Check offsets and lengths. */
+
+ woff_offset = 44 + woff.num_tables * 20L;
+ sfnt_offset = 12 + woff.num_tables * 16L;
+
+ for ( nn = 0; nn < woff.num_tables; nn++ )
+ {
+ WOFF_Table table = indices[nn];
+
+
+ if ( table->Offset != woff_offset ||
+ table->CompLength > woff.length ||
+ table->Offset > woff.length - table->CompLength ||
+ table->OrigLength > woff.totalSfntSize ||
+ sfnt_offset > woff.totalSfntSize - table->OrigLength ||
+ table->CompLength > table->OrigLength )
+ {
+ error = FT_THROW( Invalid_Table );
+ goto Exit;
+ }
+
+ table->OrigOffset = sfnt_offset;
+
+ /* The offsets must be multiples of 4. */
+ woff_offset += ( table->CompLength + 3 ) & ~3;
+ sfnt_offset += ( table->OrigLength + 3 ) & ~3;
+ }
+
+ /*
+ * Final checks!
+ *
+ * We don't decode and check the metadata block.
+ * We don't check table checksums either.
+ * But other than those, I think we implement all
+ * `MUST' checks from the spec.
+ */
+
+ if ( woff.metaOffset )
+ {
+ if ( woff.metaOffset != woff_offset ||
+ woff.metaOffset + woff.metaLength > woff.length )
+ {
+ error = FT_THROW( Invalid_Table );
+ goto Exit;
+ }
+
+ /* We have padding only ... */
+ woff_offset += woff.metaLength;
+ }
+
+ if ( woff.privOffset )
+ {
+ /* ... if it isn't the last block. */
+ woff_offset = ( woff_offset + 3 ) & ~3;
+
+ if ( woff.privOffset != woff_offset ||
+ woff.privOffset + woff.privLength > woff.length )
+ {
+ error = FT_THROW( Invalid_Table );
+ goto Exit;
+ }
+
+ /* No padding for the last block. */
+ woff_offset += woff.privLength;
+ }
+
+ if ( sfnt_offset != woff.totalSfntSize ||
+ woff_offset != woff.length )
+ {
+ error = FT_THROW( Invalid_Table );
+ goto Exit;
+ }
+
+ /* Write the tables. */
+
+ for ( nn = 0; nn < woff.num_tables; nn++ )
+ {
+ WOFF_Table table = tables + nn;
+
+
+ /* Write SFNT table entry. */
+ WRITE_ULONG( sfnt_header, table->Tag );
+ WRITE_ULONG( sfnt_header, table->CheckSum );
+ WRITE_ULONG( sfnt_header, table->OrigOffset );
+ WRITE_ULONG( sfnt_header, table->OrigLength );
+
+ /* Write table data. */
+ if ( FT_STREAM_SEEK( table->Offset ) ||
+ FT_FRAME_ENTER( table->CompLength ) )
+ goto Exit;
+
+ if ( table->CompLength == table->OrigLength )
+ {
+ /* Uncompressed data; just copy. */
+ ft_memcpy( sfnt + table->OrigOffset,
+ stream->cursor,
+ table->OrigLength );
+ }
+ else
+ {
+#ifdef FT_CONFIG_OPTION_USE_ZLIB
+
+ /* Uncompress with zlib. */
+ FT_ULong output_len = table->OrigLength;
+
+
+ error = FT_Gzip_Uncompress( memory,
+ sfnt + table->OrigOffset, &output_len,
+ stream->cursor, table->CompLength );
+ if ( error )
+ goto Exit;
+ if ( output_len != table->OrigLength )
+ {
+ error = FT_THROW( Invalid_Table );
+ goto Exit;
+ }
+
+#else /* !FT_CONFIG_OPTION_USE_ZLIB */
+
+ error = FT_THROW( Unimplemented_Feature );
+ goto Exit;
+
+#endif /* !FT_CONFIG_OPTION_USE_ZLIB */
+ }
+
+ FT_FRAME_EXIT();
+
+ /* We don't check whether the padding bytes in the WOFF file are */
+ /* actually '\0'. For the output, however, we do set them properly. */
+ sfnt_offset = table->OrigOffset + table->OrigLength;
+ while ( sfnt_offset & 3 )
+ {
+ sfnt[sfnt_offset] = '\0';
+ sfnt_offset++;
+ }
+ }
+
+ /* Ok! Finally ready. Swap out stream and return. */
+ FT_Stream_OpenMemory( sfnt_stream, sfnt, woff.totalSfntSize );
+ sfnt_stream->memory = stream->memory;
+ sfnt_stream->close = sfnt_stream_close;
+
+ FT_Stream_Free(
+ face->root.stream,
+ ( face->root.face_flags & FT_FACE_FLAG_EXTERNAL_STREAM ) != 0 );
+
+ face->root.stream = sfnt_stream;
+
+ face->root.face_flags &= ~FT_FACE_FLAG_EXTERNAL_STREAM;
+
+ Exit:
+ FT_FREE( tables );
+ FT_FREE( indices );
+
+ if ( error )
+ {
+ FT_FREE( sfnt );
+ FT_Stream_Close( sfnt_stream );
+ FT_FREE( sfnt_stream );
+ }
+
+ return error;
+ }
+
+
+#undef WRITE_USHORT
+#undef WRITE_ULONG
+
+
/* Fill in face->ttc_header. If the font is not a TTC, it is */
/* synthesized into a TTC with one offset table. */
static FT_Error
@@ -356,7 +742,7 @@
FT_FRAME_START( 8 ),
FT_FRAME_LONG( version ),
- FT_FRAME_LONG( count ),
+ FT_FRAME_LONG( count ), /* this is ULong in the specs */
FT_FRAME_END
};
@@ -365,18 +751,38 @@
face->ttc_header.version = 0;
face->ttc_header.count = 0;
+ retry:
offset = FT_STREAM_POS();
if ( FT_READ_ULONG( tag ) )
return error;
+ if ( tag == TTAG_wOFF )
+ {
+ FT_TRACE2(( "sfnt_open_font: file is a WOFF; synthesizing SFNT\n" ));
+
+ if ( FT_STREAM_SEEK( offset ) )
+ return error;
+
+ error = woff_open_font( stream, face );
+ if ( error )
+ return error;
+
+ /* Swap out stream and retry! */
+ stream = face->root.stream;
+ goto retry;
+ }
+
if ( tag != 0x00010000UL &&
tag != TTAG_ttcf &&
tag != TTAG_OTTO &&
tag != TTAG_true &&
tag != TTAG_typ1 &&
tag != 0x00020000UL )
- return SFNT_Err_Unknown_File_Format;
+ {
+ FT_TRACE2(( " not a font using the SFNT container format\n" ));
+ return FT_THROW( Unknown_File_Format );
+ }
face->ttc_header.tag = TTAG_ttcf;
@@ -390,6 +796,17 @@
if ( FT_STREAM_READ_FIELDS( ttc_header_fields, &face->ttc_header ) )
return error;
+ if ( face->ttc_header.count == 0 )
+ return FT_THROW( Invalid_Table );
+
+ /* a rough size estimate: let's conservatively assume that there */
+ /* is just a single table info in each subfont header (12 + 16*1 = */
+ /* 28 bytes), thus we have (at least) `12 + 4*count' bytes for the */
+ /* size of the TTC header plus `28*count' bytes for all subfont */
+ /* headers */
+ if ( (FT_ULong)face->ttc_header.count > stream->size / ( 28 + 4 ) )
+ return FT_THROW( Array_Too_Large );
+
/* now read the offsets of each font in the file */
if ( FT_NEW_ARRAY( face->ttc_header.offsets, face->ttc_header.count ) )
return error;
@@ -441,7 +858,10 @@
{
sfnt = (SFNT_Service)FT_Get_Module_Interface( library, "sfnt" );
if ( !sfnt )
- return SFNT_Err_Invalid_File_Format;
+ {
+ FT_ERROR(( "sfnt_init_face: cannot access `sfnt' module\n" ));
+ return FT_THROW( Missing_Module );
+ }
face->sfnt = sfnt;
face->goto_table = sfnt->goto_table;
@@ -449,17 +869,22 @@
FT_FACE_FIND_GLOBAL_SERVICE( face, face->psnames, POSTSCRIPT_CMAPS );
+ FT_TRACE2(( "SFNT driver\n" ));
+
error = sfnt_open_font( stream, face );
if ( error )
return error;
+ /* Stream may have changed in sfnt_open_font. */
+ stream = face->root.stream;
+
FT_TRACE2(( "sfnt_init_face: %08p, %ld\n", face, face_index ));
if ( face_index < 0 )
face_index = 0;
if ( face_index >= face->ttc_header.count )
- return SFNT_Err_Invalid_Argument;
+ return FT_THROW( Invalid_Argument );
if ( FT_STREAM_SEEK( face->ttc_header.offsets[face_index] ) )
return error;
@@ -476,42 +901,45 @@
}
-#define LOAD_( x ) \
- do { \
- FT_TRACE2(( "`" #x "' " )); \
- FT_TRACE3(( "-->\n" )); \
- \
- error = sfnt->load_##x( face, stream ); \
- \
- FT_TRACE2(( "%s\n", ( !error ) \
- ? "loaded" \
- : ( error == SFNT_Err_Table_Missing ) \
- ? "missing" \
- : "failed to load" )); \
- FT_TRACE3(( "\n" )); \
+#define LOAD_( x ) \
+ do \
+ { \
+ FT_TRACE2(( "`" #x "' " )); \
+ FT_TRACE3(( "-->\n" )); \
+ \
+ error = sfnt->load_ ## x( face, stream ); \
+ \
+ FT_TRACE2(( "%s\n", ( !error ) \
+ ? "loaded" \
+ : FT_ERR_EQ( error, Table_Missing ) \
+ ? "missing" \
+ : "failed to load" )); \
+ FT_TRACE3(( "\n" )); \
} while ( 0 )
-#define LOADM_( x, vertical ) \
- do { \
- FT_TRACE2(( "`%s" #x "' ", \
- vertical ? "vertical " : "" )); \
- FT_TRACE3(( "-->\n" )); \
- \
- error = sfnt->load_##x( face, stream, vertical ); \
- \
- FT_TRACE2(( "%s\n", ( !error ) \
- ? "loaded" \
- : ( error == SFNT_Err_Table_Missing ) \
- ? "missing" \
- : "failed to load" )); \
- FT_TRACE3(( "\n" )); \
+#define LOADM_( x, vertical ) \
+ do \
+ { \
+ FT_TRACE2(( "`%s" #x "' ", \
+ vertical ? "vertical " : "" )); \
+ FT_TRACE3(( "-->\n" )); \
+ \
+ error = sfnt->load_ ## x( face, stream, vertical ); \
+ \
+ FT_TRACE2(( "%s\n", ( !error ) \
+ ? "loaded" \
+ : FT_ERR_EQ( error, Table_Missing ) \
+ ? "missing" \
+ : "failed to load" )); \
+ FT_TRACE3(( "\n" )); \
} while ( 0 )
-#define GET_NAME( id, field ) \
- do { \
- error = tt_face_get_name( face, TT_NAME_ID_##id, field ); \
- if ( error ) \
- goto Exit; \
+#define GET_NAME( id, field ) \
+ do \
+ { \
+ error = tt_face_get_name( face, TT_NAME_ID_ ## id, field ); \
+ if ( error ) \
+ goto Exit; \
} while ( 0 )
@@ -528,15 +956,17 @@
#endif
FT_Bool has_outline;
FT_Bool is_apple_sbit;
- FT_Bool ignore_preferred_family = FALSE;
+ FT_Bool is_apple_sbix;
+ FT_Bool ignore_preferred_family = FALSE;
FT_Bool ignore_preferred_subfamily = FALSE;
SFNT_Service sfnt = (SFNT_Service)face->sfnt;
FT_UNUSED( face_index );
+
/* Check parameters */
-
+
{
FT_Int i;
@@ -571,15 +1001,22 @@
/* do we have outlines in there? */
#ifdef FT_CONFIG_OPTION_INCREMENTAL
- has_outline = FT_BOOL( face->root.internal->incremental_interface != 0 ||
- tt_face_lookup_table( face, TTAG_glyf ) != 0 ||
- tt_face_lookup_table( face, TTAG_CFF ) != 0 );
+ has_outline = FT_BOOL( face->root.internal->incremental_interface != 0 ||
+ tt_face_lookup_table( face, TTAG_glyf ) != 0 ||
+ tt_face_lookup_table( face, TTAG_CFF ) != 0 );
#else
- has_outline = FT_BOOL( tt_face_lookup_table( face, TTAG_glyf ) != 0 ||
- tt_face_lookup_table( face, TTAG_CFF ) != 0 );
+ has_outline = FT_BOOL( tt_face_lookup_table( face, TTAG_glyf ) != 0 ||
+ tt_face_lookup_table( face, TTAG_CFF ) != 0 );
#endif
is_apple_sbit = 0;
+ is_apple_sbix = !face->goto_table( face, TTAG_sbix, stream, 0 );
+
+ /* Apple 'sbix' color bitmaps are rendered scaled and then the 'glyf'
+ * outline rendered on top. We don't support that yet, so just ignore
+ * the 'glyf' outline and advertise it as a bitmap-only font. */
+ if ( is_apple_sbix )
+ has_outline = FALSE;
/* if this font doesn't contain outlines, we try to load */
/* a `bhed' table */
@@ -591,7 +1028,7 @@
/* load the font header (`head' table) if this isn't an Apple */
/* sbit font file */
- if ( !is_apple_sbit )
+ if ( !is_apple_sbit || is_apple_sbix )
{
LOAD_( head );
if ( error )
@@ -600,7 +1037,7 @@
if ( face->header.Units_Per_EM == 0 )
{
- error = SFNT_Err_Invalid_Table;
+ error = FT_THROW( Invalid_Table );
goto Exit;
}
@@ -628,9 +1065,9 @@
if ( !error )
{
LOADM_( hmtx, 0 );
- if ( error == SFNT_Err_Table_Missing )
+ if ( FT_ERR_EQ( error, Table_Missing ) )
{
- error = SFNT_Err_Hmtx_Table_Missing;
+ error = FT_THROW( Hmtx_Table_Missing );
#ifdef FT_CONFIG_OPTION_INCREMENTAL
/* If this is an incrementally loaded font and there are */
@@ -640,23 +1077,24 @@
get_glyph_metrics )
{
face->horizontal.number_Of_HMetrics = 0;
- error = SFNT_Err_Ok;
+ error = FT_Err_Ok;
}
#endif
}
}
- else if ( error == SFNT_Err_Table_Missing )
+ else if ( FT_ERR_EQ( error, Table_Missing ) )
{
/* No `hhea' table necessary for SFNT Mac fonts. */
if ( face->format_tag == TTAG_true )
{
FT_TRACE2(( "This is an SFNT Mac font.\n" ));
+
has_outline = 0;
- error = SFNT_Err_Ok;
+ error = FT_Err_Ok;
}
else
{
- error = SFNT_Err_Horiz_Header_Missing;
+ error = FT_THROW( Horiz_Header_Missing );
#ifdef FT_CONFIG_OPTION_INCREMENTAL
/* If this is an incrementally loaded font and there are */
@@ -666,7 +1104,7 @@
get_glyph_metrics )
{
face->horizontal.number_Of_HMetrics = 0;
- error = SFNT_Err_Ok;
+ error = FT_Err_Ok;
}
#endif
@@ -685,15 +1123,13 @@
face->vertical_info = 1;
}
- if ( error && error != SFNT_Err_Table_Missing )
+ if ( error && FT_ERR_NEQ( error, Table_Missing ) )
goto Exit;
LOAD_( os2 );
if ( error )
{
- if ( error != SFNT_Err_Table_Missing )
- goto Exit;
-
+ /* we treat the table as missing if there are any errors */
face->os2.version = 0xFFFFU;
}
}
@@ -709,8 +1145,8 @@
/* a font which contains neither bitmaps nor outlines is */
/* still valid (although rather useless in most cases); */
/* however, you can find such stripped fonts in PDFs */
- if ( error == SFNT_Err_Table_Missing )
- error = SFNT_Err_Ok;
+ if ( FT_ERR_EQ( error, Table_Missing ) )
+ error = FT_Err_Ok;
else
goto Exit;
}
@@ -719,7 +1155,7 @@
LOAD_( pclt );
if ( error )
{
- if ( error != SFNT_Err_Table_Missing )
+ if ( FT_ERR_NEQ( error, Table_Missing ) )
goto Exit;
face->pclt.Version = 0;
@@ -776,6 +1212,10 @@
/* */
/* Compute face flags. */
/* */
+ if ( face->sbit_table_type == TT_SBIT_TABLE_TYPE_CBLC ||
+ face->sbit_table_type == TT_SBIT_TABLE_TYPE_SBIX )
+ flags |= FT_FACE_FLAG_COLOR; /* color glyphs */
+
if ( has_outline == TRUE )
flags |= FT_FACE_FLAG_SCALABLE; /* scalable outlines */
@@ -785,7 +1225,7 @@
FT_FACE_FLAG_HORIZONTAL; /* horizontal data */
#ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
- if ( psnames_error == SFNT_Err_Ok &&
+ if ( !psnames_error &&
face->postscript.FormatType != 0x00030000L )
flags |= FT_FACE_FLAG_GLYPH_NAMES;
#endif
@@ -892,11 +1332,7 @@
FT_UInt i, count;
-#ifndef FT_CONFIG_OPTION_OLD_INTERNALS
count = face->sbit_num_strikes;
-#else
- count = (FT_UInt)face->num_sbit_strikes;
-#endif
if ( count > 0 )
{
@@ -908,7 +1344,7 @@
if ( em_size == 0 || face->os2.version == 0xFFFFU )
{
- avgwidth = 0;
+ avgwidth = 1;
em_size = 1;
}
@@ -989,40 +1425,36 @@
/* table cannot be used to compute the text height reliably! */
/* */
- /* The ascender/descender/height are computed from the OS/2 table */
- /* when found. Otherwise, they're taken from the horizontal */
- /* header. */
- /* */
+ /* The ascender and descender are taken from the `hhea' table. */
+ /* If zero, they are taken from the `OS/2' table. */
root->ascender = face->horizontal.Ascender;
root->descender = face->horizontal.Descender;
- root->height = (FT_Short)( root->ascender - root->descender +
- face->horizontal.Line_Gap );
+ root->height = (FT_Short)( root->ascender - root->descender +
+ face->horizontal.Line_Gap );
-#if 0
- /* if the line_gap is 0, we add an extra 15% to the text height -- */
- /* this computation is based on various versions of Times New Roman */
- if ( face->horizontal.Line_Gap == 0 )
- root->height = (FT_Short)( ( root->height * 115 + 50 ) / 100 );
-#endif /* 0 */
-
-#if 0
- /* some fonts have the OS/2 "sTypoAscender", "sTypoDescender" & */
- /* "sTypoLineGap" fields set to 0, like ARIALNB.TTF */
- if ( face->os2.version != 0xFFFFU && root->ascender )
+ if ( !( root->ascender || root->descender ) )
{
- FT_Int height;
-
+ if ( face->os2.version != 0xFFFFU )
+ {
+ if ( face->os2.sTypoAscender || face->os2.sTypoDescender )
+ {
+ root->ascender = face->os2.sTypoAscender;
+ root->descender = face->os2.sTypoDescender;
- root->ascender = face->os2.sTypoAscender;
- root->descender = -face->os2.sTypoDescender;
+ root->height = (FT_Short)( root->ascender - root->descender +
+ face->os2.sTypoLineGap );
+ }
+ else
+ {
+ root->ascender = (FT_Short)face->os2.usWinAscent;
+ root->descender = -(FT_Short)face->os2.usWinDescent;
- height = root->ascender + root->descender + face->os2.sTypoLineGap;
- if ( height > root->height )
- root->height = height;
+ root->height = (FT_UShort)( root->ascender - root->descender );
+ }
+ }
}
-#endif /* 0 */
root->max_advance_width = face->horizontal.advance_Width_Max;
root->max_advance_height = (FT_Short)( face->vertical_info
@@ -1101,7 +1533,6 @@
}
/* freeing the horizontal metrics */
-#ifndef FT_CONFIG_OPTION_OLD_INTERNALS
{
FT_Stream stream = FT_FACE_STREAM( face );
@@ -1111,10 +1542,6 @@
face->horz_metrics_size = 0;
face->vert_metrics_size = 0;
}
-#else
- FT_FREE( face->horizontal.long_metrics );
- FT_FREE( face->horizontal.short_metrics );
-#endif
/* freeing the vertical ones, if any */
if ( face->vertical_info )
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-07 20:48:33 +0000