/* */
/* Load the metrics tables common to TTF and OTF fonts (body). */
/* */
-/* Copyright 2006-2009, 2011 by */
+/* Copyright 2006-2009, 2011-2014 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
#define FT_COMPONENT trace_ttmtx
- /*
- * Unfortunately, we can't enable our memory optimizations if
- * FT_CONFIG_OPTION_OLD_INTERNALS is defined. This is because at least
- * one rogue client (libXfont in the X.Org XServer) is directly accessing
- * the metrics.
- */
-
/*************************************************************************/
/* */
/* <Function> */
/* <Return> */
/* FreeType error code. 0 means success. */
/* */
-#ifndef FT_CONFIG_OPTION_OLD_INTERNALS
-
FT_LOCAL_DEF( FT_Error )
tt_face_load_hmtx( TT_Face face,
FT_Stream stream,
return error;
}
-#else /* !FT_CONFIG_OPTION_OLD_INTERNALS */
-
- FT_LOCAL_DEF( FT_Error )
- tt_face_load_hmtx( TT_Face face,
- FT_Stream stream,
- FT_Bool vertical )
- {
- FT_Error error;
- FT_Memory memory = stream->memory;
-
- FT_ULong table_len;
- FT_Long num_shorts, num_longs, num_shorts_checked;
-
- TT_LongMetrics* longs;
- TT_ShortMetrics** shorts;
- FT_Byte* p;
-
-
- if ( vertical )
- {
- void* lm = &face->vertical.long_metrics;
- void** sm = &face->vertical.short_metrics;
-
-
- error = face->goto_table( face, TTAG_vmtx, stream, &table_len );
- if ( error )
- goto Fail;
-
- num_longs = face->vertical.number_Of_VMetrics;
- if ( (FT_ULong)num_longs > table_len / 4 )
- num_longs = (FT_Long)( table_len / 4 );
-
- face->vertical.number_Of_VMetrics = 0;
-
- longs = (TT_LongMetrics*)lm;
- shorts = (TT_ShortMetrics**)sm;
- }
- else
- {
- void* lm = &face->horizontal.long_metrics;
- void** sm = &face->horizontal.short_metrics;
-
-
- error = face->goto_table( face, TTAG_hmtx, stream, &table_len );
- if ( error )
- goto Fail;
-
- num_longs = face->horizontal.number_Of_HMetrics;
- if ( (FT_ULong)num_longs > table_len / 4 )
- num_longs = (FT_Long)( table_len / 4 );
-
- face->horizontal.number_Of_HMetrics = 0;
-
- longs = (TT_LongMetrics*)lm;
- shorts = (TT_ShortMetrics**)sm;
- }
-
- /* never trust derived values */
-
- num_shorts = face->max_profile.numGlyphs - num_longs;
- num_shorts_checked = ( table_len - num_longs * 4L ) / 2;
-
- if ( num_shorts < 0 )
- {
- FT_TRACE0(( "tt_face_load_hmtx:"
- " %cmtx has more metrics than glyphs.\n",
- vertical ? 'v' : 'h' ));
-
- /* Adobe simply ignores this problem. So we shall do the same. */
-#if 0
- error = vertical ? SFNT_Err_Invalid_Vert_Metrics
- : SFNT_Err_Invalid_Horiz_Metrics;
- goto Exit;
-#else
- num_shorts = 0;
-#endif
- }
-
- if ( FT_QNEW_ARRAY( *longs, num_longs ) ||
- FT_QNEW_ARRAY( *shorts, num_shorts ) )
- goto Fail;
-
- if ( FT_FRAME_ENTER( table_len ) )
- goto Fail;
-
- p = stream->cursor;
-
- {
- TT_LongMetrics cur = *longs;
- TT_LongMetrics limit = cur + num_longs;
-
-
- for ( ; cur < limit; cur++ )
- {
- cur->advance = FT_NEXT_USHORT( p );
- cur->bearing = FT_NEXT_SHORT( p );
- }
- }
-
- /* do we have an inconsistent number of metric values? */
- {
- TT_ShortMetrics* cur = *shorts;
- TT_ShortMetrics* limit = cur +
- FT_MIN( num_shorts, num_shorts_checked );
-
-
- for ( ; cur < limit; cur++ )
- *cur = FT_NEXT_SHORT( p );
-
- /* We fill up the missing left side bearings with the */
- /* last valid value. Since this will occur for buggy CJK */
- /* fonts usually only, nothing serious will happen. */
- if ( num_shorts > num_shorts_checked && num_shorts_checked > 0 )
- {
- FT_Short val = (*shorts)[num_shorts_checked - 1];
-
-
- limit = *shorts + num_shorts;
- for ( ; cur < limit; cur++ )
- *cur = val;
- }
- }
-
- FT_FRAME_EXIT();
-
- if ( vertical )
- face->vertical.number_Of_VMetrics = (FT_UShort)num_longs;
- else
- face->horizontal.number_Of_HMetrics = (FT_UShort)num_longs;
-
- Fail:
- return error;
- }
-
-#endif /* !FT_CONFIG_OPTION_OLD_INTERNALS */
-
/*************************************************************************/
/* */
FT_Error error;
TT_HoriHeader* header;
- const FT_Frame_Field metrics_header_fields[] =
+ static const FT_Frame_Field metrics_header_fields[] =
{
#undef FT_STRUCTURE
#define FT_STRUCTURE TT_HoriHeader
/* tt_face_get_metrics */
/* */
/* <Description> */
- /* Returns the horizontal or vertical metrics in font units for a */
- /* given glyph. The metrics are the left side bearing (resp. top */
- /* side bearing) and advance width (resp. advance height). */
+ /* Return the horizontal or vertical metrics in font units for a */
+ /* given glyph. The values are the left side bearing (top side */
+ /* bearing for vertical metrics) and advance width (advance height */
+ /* for vertical metrics). */
/* */
/* <Input> */
- /* header :: A pointer to either the horizontal or vertical metrics */
- /* structure. */
+ /* face :: A pointer to the TrueType face structure. */
+ /* */
+ /* vertical :: If set to TRUE, get vertical metrics. */
/* */
- /* idx :: The glyph index. */
+ /* gindex :: The glyph index. */
/* */
/* <Output> */
- /* bearing :: The bearing, either left side or top side. */
+ /* abearing :: The bearing, either left side or top side. */
/* */
- /* advance :: The advance width resp. advance height. */
+ /* aadvance :: The advance width or advance height, depending on */
+ /* the `vertical' flag. */
/* */
-#ifndef FT_CONFIG_OPTION_OLD_INTERNALS
-
- FT_LOCAL_DEF( FT_Error )
+ FT_LOCAL_DEF( void )
tt_face_get_metrics( TT_Face face,
FT_Bool vertical,
FT_UInt gindex,
*abearing = 0;
*aadvance = 0;
}
-
- return SFNT_Err_Ok;
}
-#else /* !FT_CONFIG_OPTION_OLD_INTERNALS */
-
- FT_LOCAL_DEF( FT_Error )
- tt_face_get_metrics( TT_Face face,
- FT_Bool vertical,
- FT_UInt gindex,
- FT_Short* abearing,
- FT_UShort* aadvance )
- {
- void* v = &face->vertical;
- void* h = &face->horizontal;
- TT_HoriHeader* header = vertical ? (TT_HoriHeader*)v
- : (TT_HoriHeader*)h;
- TT_LongMetrics longs_m;
- FT_UShort k = header->number_Of_HMetrics;
-
-
- if ( k == 0 ||
- !header->long_metrics ||
- gindex >= (FT_UInt)face->max_profile.numGlyphs )
- {
- *abearing = *aadvance = 0;
- return SFNT_Err_Ok;
- }
-
- if ( gindex < (FT_UInt)k )
- {
- longs_m = (TT_LongMetrics)header->long_metrics + gindex;
- *abearing = longs_m->bearing;
- *aadvance = longs_m->advance;
- }
- else
- {
- *abearing = ((TT_ShortMetrics*)header->short_metrics)[gindex - k];
- *aadvance = ((TT_LongMetrics)header->long_metrics)[k - 1].advance;
- }
-
- return SFNT_Err_Ok;
- }
-
-#endif /* !FT_CONFIG_OPTION_OLD_INTERNALS */
-
/* END */
projects / framework / graphics / freetype.git / blobdiff