summaryrefslogtreecommitdiffstats
path: root/src/cff/cffgload.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/cff/cffgload.c')
-rw-r--r--src/cff/cffgload.c223
1 files changed, 155 insertions, 68 deletions
diff --git a/src/cff/cffgload.c b/src/cff/cffgload.c
index 84847fd..1904ca0 100644
--- a/src/cff/cffgload.c
+++ b/src/cff/cffgload.c
@@ -4,7 +4,7 @@
/* */
/* OpenType Glyph Loader (body). */
/* */
-/* Copyright 1996-2012 by */
+/* Copyright 1996-2013 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -21,10 +21,12 @@
#include FT_INTERNAL_STREAM_H
#include FT_INTERNAL_SFNT_H
#include FT_OUTLINE_H
+#include FT_CFF_DRIVER_H
#include "cffobjs.h"
#include "cffload.h"
#include "cffgload.h"
+#include "cf2ft.h" /* for cf2_decoder_parse_charstrings */
#include "cfferrs.h"
@@ -39,6 +41,8 @@
#define FT_COMPONENT trace_cffgload
+#ifdef CFF_CONFIG_OPTION_OLD_ENGINE
+
typedef enum CFF_Operator_
{
cff_op_unknown = 0,
@@ -209,6 +213,8 @@
2 /* setcurrentpoint */
};
+#endif /* CFF_CONFIG_OPTION_OLD_ENGINE */
+
/*************************************************************************/
/*************************************************************************/
@@ -412,7 +418,7 @@
CFF_Builder *builder = &decoder->builder;
CFF_Font cff = (CFF_Font)builder->face->extra.data;
CFF_SubFont sub = &cff->top_font;
- FT_Error error = CFF_Err_Ok;
+ FT_Error error = FT_Err_Ok;
/* manage CID fonts */
@@ -424,7 +430,7 @@
if ( fd_index >= cff->num_subfonts )
{
FT_TRACE4(( "cff_decoder_prepare: invalid CID subfont index\n" ));
- error = CFF_Err_Invalid_File_Format;
+ error = FT_THROW( Invalid_File_Format );
goto Exit;
}
@@ -455,22 +461,24 @@
decoder->glyph_width = sub->private_dict.default_width;
decoder->nominal_width = sub->private_dict.nominal_width;
+ decoder->current_subfont = sub; /* for Adobe's CFF handler */
+
Exit:
return error;
}
/* check that there is enough space for `count' more points */
- static FT_Error
- check_points( CFF_Builder* builder,
- FT_Int count )
+ FT_LOCAL_DEF( FT_Error )
+ cff_check_points( CFF_Builder* builder,
+ FT_Int count )
{
return FT_GLYPHLOADER_CHECK_POINTS( builder->loader, count, 0 );
}
/* add a new point, do not check space */
- static void
+ FT_LOCAL_DEF( void )
cff_builder_add_point( CFF_Builder* builder,
FT_Pos x,
FT_Pos y,
@@ -484,9 +492,22 @@
FT_Vector* point = outline->points + outline->n_points;
FT_Byte* control = (FT_Byte*)outline->tags + outline->n_points;
+#ifdef CFF_CONFIG_OPTION_OLD_ENGINE
+ CFF_Driver driver = (CFF_Driver)FT_FACE_DRIVER( builder->face );
+
- point->x = x >> 16;
- point->y = y >> 16;
+ if ( driver->hinting_engine == FT_CFF_HINTING_FREETYPE )
+ {
+ point->x = x >> 16;
+ point->y = y >> 16;
+ }
+ else
+#endif
+ {
+ /* cf2_decoder_parse_charstrings uses 16.16 coordinates */
+ point->x = x >> 10;
+ point->y = y >> 10;
+ }
*control = (FT_Byte)( flag ? FT_CURVE_TAG_ON : FT_CURVE_TAG_CUBIC );
}
@@ -495,7 +516,7 @@
/* check space for a new on-curve point, then add it */
- static FT_Error
+ FT_LOCAL_DEF( FT_Error )
cff_builder_add_point1( CFF_Builder* builder,
FT_Pos x,
FT_Pos y )
@@ -503,7 +524,7 @@
FT_Error error;
- error = check_points( builder, 1 );
+ error = cff_check_points( builder, 1 );
if ( !error )
cff_builder_add_point( builder, x, y, 1 );
@@ -522,7 +543,7 @@
if ( !builder->load_points )
{
outline->n_contours++;
- return CFF_Err_Ok;
+ return FT_Err_Ok;
}
error = FT_GLYPHLOADER_CHECK_POINTS( builder->loader, 0, 1 );
@@ -540,12 +561,12 @@
/* if a path was begun, add its first on-curve point */
- static FT_Error
+ FT_LOCAL_DEF( FT_Error )
cff_builder_start_point( CFF_Builder* builder,
FT_Pos x,
FT_Pos y )
{
- FT_Error error = CFF_Err_Ok;
+ FT_Error error = FT_Err_Ok;
/* test whether we are building a new contour */
@@ -562,7 +583,7 @@
/* close the current contour */
- static void
+ FT_LOCAL_DEF( void )
cff_builder_close_contour( CFF_Builder* builder )
{
FT_Outline* outline = builder->current;
@@ -607,7 +628,7 @@
}
- static FT_Int
+ FT_LOCAL_DEF( FT_Int )
cff_lookup_glyph_by_stdcharcode( CFF_Font cff,
FT_Int charcode )
{
@@ -636,7 +657,7 @@
}
- static FT_Error
+ FT_LOCAL_DEF( FT_Error )
cff_get_glyph_data( TT_Face face,
FT_UInt glyph_index,
FT_Byte** pointer,
@@ -672,7 +693,7 @@
}
- static void
+ FT_LOCAL_DEF( void )
cff_free_glyph_data( TT_Face face,
FT_Byte** pointer,
FT_ULong length )
@@ -707,6 +728,8 @@
}
+#ifdef CFF_CONFIG_OPTION_OLD_ENGINE
+
static FT_Error
cff_operator_seac( CFF_Decoder* decoder,
FT_Pos asb,
@@ -728,7 +751,7 @@
if ( decoder->seac )
{
FT_ERROR(( "cff_operator_seac: invalid nested seac\n" ));
- return CFF_Err_Syntax_Error;
+ return FT_THROW( Syntax_Error );
}
adx += decoder->builder.left_bearing.x;
@@ -756,7 +779,7 @@
{
FT_ERROR(( "cff_operator_seac:"
" invalid seac character code arguments\n" ));
- return CFF_Err_Syntax_Error;
+ return FT_THROW( Syntax_Error );
}
/* If we are trying to load a composite glyph, do not load the */
@@ -925,7 +948,7 @@
limit = zone->limit = charstring_base + charstring_len;
ip = zone->cursor = zone->base;
- error = CFF_Err_Ok;
+ error = FT_Err_Ok;
x = builder->pos_x;
y = builder->pos_y;
@@ -953,11 +976,14 @@
/* this is an operand, push it on the stack */
+
+ /* if we use shifts, all computations are done with unsigned */
+ /* values; the conversion to a signed value is the last step */
if ( v == 28 )
{
if ( ip + 1 >= limit )
goto Syntax_Error;
- val = (FT_Short)( ( (FT_Short)ip[0] << 8 ) | ip[1] );
+ val = (FT_Short)( ( (FT_UShort)ip[0] << 8 ) | ip[1] );
ip += 2;
}
else if ( v < 247 )
@@ -978,10 +1004,10 @@
{
if ( ip + 3 >= limit )
goto Syntax_Error;
- val = ( (FT_Int32)ip[0] << 24 ) |
- ( (FT_Int32)ip[1] << 16 ) |
- ( (FT_Int32)ip[2] << 8 ) |
- ip[3];
+ val = (FT_Int32)( ( (FT_UInt32)ip[0] << 24 ) |
+ ( (FT_UInt32)ip[1] << 16 ) |
+ ( (FT_UInt32)ip[2] << 8 ) |
+ (FT_UInt32)ip[3] );
ip += 4;
if ( charstring_type == 2 )
shift = 0;
@@ -989,12 +1015,12 @@
if ( decoder->top - stack >= CFF_MAX_OPERANDS )
goto Stack_Overflow;
- val <<= shift;
+ val = (FT_Int32)( (FT_UInt32)val << shift );
*decoder->top++ = val;
#ifdef FT_DEBUG_LEVEL_TRACE
if ( !( val & 0xFFFFL ) )
- FT_TRACE4(( " %ld", (FT_Int32)( val >> 16 ) ));
+ FT_TRACE4(( " %hd", (FT_Short)( (FT_UInt32)val >> 16 ) ));
else
FT_TRACE4(( " %.2f", val / 65536.0 ));
#endif
@@ -1411,8 +1437,8 @@
case cff_op_rlineto:
FT_TRACE4(( " rlineto\n" ));
- if ( cff_builder_start_point ( builder, x, y ) ||
- check_points( builder, num_args / 2 ) )
+ if ( cff_builder_start_point( builder, x, y ) ||
+ cff_check_points( builder, num_args / 2 ) )
goto Fail;
if ( num_args < 2 )
@@ -1446,8 +1472,8 @@
if ( num_args == 0 )
break;
- if ( cff_builder_start_point ( builder, x, y ) ||
- check_points( builder, num_args ) )
+ if ( cff_builder_start_point( builder, x, y ) ||
+ cff_check_points( builder, num_args ) )
goto Fail;
args = stack;
@@ -1480,8 +1506,8 @@
nargs = num_args - num_args % 6;
- if ( cff_builder_start_point ( builder, x, y ) ||
- check_points( builder, nargs / 2 ) )
+ if ( cff_builder_start_point( builder, x, y ) ||
+ cff_check_points( builder, nargs / 2 ) )
goto Fail;
args -= nargs;
@@ -1529,7 +1555,7 @@
nargs--;
}
- if ( check_points( builder, 3 * ( nargs / 4 ) ) )
+ if ( cff_check_points( builder, 3 * ( nargs / 4 ) ) )
goto Fail;
while ( args < decoder->top )
@@ -1573,7 +1599,7 @@
nargs--;
}
- if ( check_points( builder, 3 * ( nargs / 4 ) ) )
+ if ( cff_check_points( builder, 3 * ( nargs / 4 ) ) )
goto Fail;
while ( args < decoder->top )
@@ -1613,7 +1639,7 @@
nargs = num_args & ~2;
args -= nargs;
- if ( check_points( builder, ( nargs / 4 ) * 3 ) )
+ if ( cff_check_points( builder, ( nargs / 4 ) * 3 ) )
goto Stack_Underflow;
phase = ( op == cff_op_hvcurveto );
@@ -1666,8 +1692,8 @@
nargs = num_args & ~1;
num_lines = ( nargs - 6 ) / 2;
- if ( cff_builder_start_point( builder, x, y ) ||
- check_points( builder, num_lines + 3 ) )
+ if ( cff_builder_start_point( builder, x, y ) ||
+ cff_check_points( builder, num_lines + 3 ) )
goto Fail;
args -= nargs;
@@ -1711,8 +1737,8 @@
nargs = nargs - nargs % 6 + 2;
num_curves = ( nargs - 2 ) / 6;
- if ( cff_builder_start_point ( builder, x, y ) ||
- check_points( builder, num_curves * 3 + 2 ) )
+ if ( cff_builder_start_point( builder, x, y ) ||
+ cff_check_points( builder, num_curves * 3 + 2 ) )
goto Fail;
args -= nargs;
@@ -1752,7 +1778,7 @@
/* -- make sure we have enough space for the start point if it */
/* needs to be added */
if ( cff_builder_start_point( builder, x, y ) ||
- check_points( builder, 6 ) )
+ cff_check_points( builder, 6 ) )
goto Fail;
/* record the starting point's y position for later use */
@@ -1801,7 +1827,7 @@
/* adding six more points; 4 control points, 2 on-curve points */
if ( cff_builder_start_point( builder, x, y ) ||
- check_points( builder, 6 ) )
+ cff_check_points( builder, 6 ) )
goto Fail;
/* record the starting point's y-position for later use */
@@ -1854,7 +1880,7 @@
/* adding six more points; 4 control points, 2 on-curve points */
if ( cff_builder_start_point( builder, x, y ) ||
- check_points( builder, 6 ) )
+ cff_check_points( builder, 6 ) )
goto Fail;
/* record the starting point's x, y position for later use */
@@ -1917,7 +1943,7 @@
FT_TRACE4(( " flex\n" ));
if ( cff_builder_start_point( builder, x, y ) ||
- check_points( builder, 6 ) )
+ cff_check_points( builder, 6 ) )
goto Fail;
for ( count = 6; count > 0; count-- )
@@ -1968,7 +1994,7 @@
else
{
if ( !error )
- error = CFF_Err_Ok;
+ error = FT_Err_Ok;
cff_builder_close_contour( builder );
@@ -2470,7 +2496,7 @@
FT_ERROR(( " %d", ip[0] ));
FT_ERROR(( "\n" ));
- return CFF_Err_Unimplemented_Feature;
+ return FT_THROW( Unimplemented_Feature );
}
decoder->top = args;
@@ -2489,17 +2515,19 @@
Syntax_Error:
FT_TRACE4(( "cff_decoder_parse_charstrings: syntax error\n" ));
- return CFF_Err_Invalid_File_Format;
+ return FT_THROW( Invalid_File_Format );
Stack_Underflow:
FT_TRACE4(( "cff_decoder_parse_charstrings: stack underflow\n" ));
- return CFF_Err_Too_Few_Arguments;
+ return FT_THROW( Too_Few_Arguments );
Stack_Overflow:
FT_TRACE4(( "cff_decoder_parse_charstrings: stack overflow\n" ));
- return CFF_Err_Stack_Overflow;
+ return FT_THROW( Stack_Overflow );
}
+#endif /* CFF_CONFIG_OPTION_OLD_ENGINE */
+
/*************************************************************************/
/*************************************************************************/
@@ -2526,7 +2554,7 @@
cff_compute_max_advance( TT_Face face,
FT_Int* max_advance )
{
- FT_Error error = CFF_Err_Ok;
+ FT_Error error = FT_Err_Ok;
CFF_Decoder decoder;
FT_Int glyph_index;
CFF_Font cff = (CFF_Font)face->other;
@@ -2564,12 +2592,12 @@
}
/* ignore the error if one has occurred -- skip to next glyph */
- error = CFF_Err_Ok;
+ error = FT_Err_Ok;
}
*max_advance = decoder.builder.advance.x;
- return CFF_Err_Ok;
+ return FT_Err_Ok;
}
@@ -2585,7 +2613,7 @@
FT_Error error;
CFF_Decoder decoder;
TT_Face face = (TT_Face)glyph->root.face;
- FT_Bool hinting, force_scaling;
+ FT_Bool hinting, scaled, force_scaling;
CFF_Font cff = (CFF_Font)face->extra.data;
FT_Matrix font_matrix;
@@ -2606,11 +2634,11 @@
glyph_index = cff_charset_cid_to_gindex( &cff->charset,
glyph_index );
if ( glyph_index == 0 )
- return CFF_Err_Invalid_Argument;
+ return FT_THROW( Invalid_Argument );
}
}
else if ( glyph_index >= cff->num_glyphs )
- return CFF_Err_Invalid_Argument;
+ return FT_THROW( Invalid_Argument );
if ( load_flags & FT_LOAD_NO_RECURSE )
load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING;
@@ -2653,6 +2681,11 @@
if ( !error )
{
+ FT_Bool has_vertical_info;
+ FT_UShort advance;
+ FT_Short dummy;
+
+
glyph->root.outline.n_points = 0;
glyph->root.outline.n_contours = 0;
@@ -2679,6 +2712,39 @@
glyph->root.bitmap_left = metrics.horiBearingX;
glyph->root.bitmap_top = metrics.horiBearingY;
}
+
+ /* compute linear advance widths */
+
+ ( (SFNT_Service)face->sfnt )->get_metrics( face, 0,
+ glyph_index,
+ &dummy,
+ &advance );
+ glyph->root.linearHoriAdvance = advance;
+
+ has_vertical_info = FT_BOOL(
+ face->vertical_info &&
+ face->vertical.number_Of_VMetrics > 0 );
+
+ /* get the vertical metrics from the vtmx table if we have one */
+ if ( has_vertical_info )
+ {
+ ( (SFNT_Service)face->sfnt )->get_metrics( face, 1,
+ glyph_index,
+ &dummy,
+ &advance );
+ glyph->root.linearVertAdvance = advance;
+ }
+ else
+ {
+ /* make up vertical ones */
+ if ( face->os2.version != 0xFFFFU )
+ glyph->root.linearVertAdvance = (FT_Pos)
+ ( face->os2.sTypoAscender - face->os2.sTypoDescender );
+ else
+ glyph->root.linearVertAdvance = (FT_Pos)
+ ( face->horizontal.Ascender - face->horizontal.Descender );
+ }
+
return error;
}
}
@@ -2688,7 +2754,7 @@
/* return immediately if we only want the embedded bitmaps */
if ( load_flags & FT_LOAD_SBITS_ONLY )
- return CFF_Err_Invalid_Argument;
+ return FT_THROW( Invalid_Argument );
/* if we have a CID subfont, use its matrix (which has already */
/* been multiplied with the root matrix) */
@@ -2700,6 +2766,7 @@
FT_Byte fd_index = cff_fd_select_get( &cff->fd_select,
glyph_index );
+
if ( fd_index >= cff->num_subfonts )
fd_index = (FT_Byte)( cff->num_subfonts - 1 );
@@ -2727,12 +2794,21 @@
glyph->root.outline.n_points = 0;
glyph->root.outline.n_contours = 0;
- hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 &&
- ( load_flags & FT_LOAD_NO_HINTING ) == 0 );
+ /* top-level code ensures that FT_LOAD_NO_HINTING is set */
+ /* if FT_LOAD_NO_SCALE is active */
+ hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_HINTING ) == 0 );
+ scaled = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 );
+ glyph->hint = hinting;
+ glyph->scaled = scaled;
glyph->root.format = FT_GLYPH_FORMAT_OUTLINE; /* by default */
{
+#ifdef CFF_CONFIG_OPTION_OLD_ENGINE
+ CFF_Driver driver = (CFF_Driver)FT_FACE_DRIVER( face );
+#endif
+
+
FT_Byte* charstring;
FT_ULong charstring_len;
@@ -2756,9 +2832,26 @@
if ( error )
goto Glyph_Build_Finished;
- error = cff_decoder_parse_charstrings( &decoder,
- charstring,
- charstring_len );
+#ifdef CFF_CONFIG_OPTION_OLD_ENGINE
+ /* choose which CFF renderer to use */
+ if ( driver->hinting_engine == FT_CFF_HINTING_FREETYPE )
+ error = cff_decoder_parse_charstrings( &decoder,
+ charstring,
+ charstring_len );
+ else
+#endif
+ {
+ error = cf2_decoder_parse_charstrings( &decoder,
+ charstring,
+ charstring_len );
+
+ /* Adobe's engine uses 16.16 numbers everywhere; */
+ /* as a consequence, glyphs larger than 2000ppem get rejected */
+ if ( FT_ERR_EQ( error, Glyph_Too_Big ) )
+ {
+ /* XXX to be implemented */
+ }
+ }
cff_free_glyph_data( face, &charstring, charstring_len );
@@ -2856,14 +2949,8 @@
glyph->root.linearHoriAdvance = decoder.glyph_width;
glyph->root.internal->glyph_transformed = 0;
-#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
- has_vertical_info = FT_BOOL( face->vertical_info &&
- face->vertical.number_Of_VMetrics > 0 &&
- face->vertical.long_metrics );
-#else
has_vertical_info = FT_BOOL( face->vertical_info &&
face->vertical.number_Of_VMetrics > 0 );
-#endif
/* get the vertical metrics from the vtmx table if we have one */
if ( has_vertical_info )
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 00:05:28 +0000