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Add missing objects (2/2).

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Synthesize a `SubFont' object for Type 1 fonts.  This is used in the
interpreter to access Private dict data, which are stored in
different places for Type 1 and CFF.  This allows the same data to
be used in either mode.

* src/psaux/psobjs.c (t1_make_subfont): New procedure to copy
required values to a dummy `CFF_SubFont' object.  This is similar to
`cff_make_private_dict'.
* src/psaux/psobjs.h: Add the new declaration.

* include/freetype/internal/psaux.h, src/psaux/psauxmod.c: Ditto.
Add this to the PSAux Service for future use with CID fonts.

* src/type1/t1gload.c: Include FT_INTERNAL_CFF_TYPES_H.
(T1_Parse_Glyph_And_Get_Char_String): Add the call.
This commit is contained in:
Ewald Hew 2017-09-25 06:49:41 +02:00 committed by Werner Lemberg
parent cb3f4c610d
commit 6eb03f8f5a
6 changed files with 121 additions and 0 deletions
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20
ChangeLog
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@ -1,3 +1,23 @@
2017-09-25 Ewald Hew <ewaldhew@gmail.com>
[psaux] Add missing objects (2/2).
Synthesize a `SubFont' object for Type 1 fonts. This is used in the
interpreter to access Private dict data, which are stored in
different places for Type 1 and CFF. This allows the same data to
be used in either mode.
* src/psaux/psobjs.c (t1_make_subfont): New procedure to copy
required values to a dummy `CFF_SubFont' object. This is similar to
`cff_make_private_dict'.
* src/psaux/psobjs.h: Add the new declaration.
* include/freetype/internal/psaux.h, src/psaux/psauxmod.c: Ditto.
Add this to the PSAux Service for future use with CID fonts.
* src/type1/t1gload.c: Include FT_INTERNAL_CFF_TYPES_H.
(T1_Parse_Glyph_And_Get_Char_String): Add the call.
2017-09-25 Ewald Hew <ewaldhew@gmail.com>
[psaux] Add missing objects for Type 1 (1/2).

4
include/freetype/internal/psaux.h
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@ -1290,6 +1290,10 @@ FT_BEGIN_HEADER
FT_Bool is_t1,
PS_Decoder* ps_decoder );
void
(*t1_make_subfont)( T1_Face face,
CFF_SubFont subfont );
T1_CMap_Classes t1_cmap_classes;

1
src/psaux/psauxmod.c
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@ -154,6 +154,7 @@
t1_decrypt,
cff_random,
ps_decoder_init,
t1_make_subfont,
(const T1_CMap_ClassesRec*) &t1_cmap_classes,

85
src/psaux/psobjs.c
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@ -2327,6 +2327,91 @@
/*************************************************************************/
/*************************************************************************/
FT_LOCAL_DEF( void )
t1_make_subfont( T1_Face face,
CFF_SubFont subfont )
{
PS_Private priv = &face->type1.private_dict;
CFF_Private cpriv = &subfont->private_dict;
FT_UInt n, count;
FT_ZERO( subfont );
FT_ZERO( cpriv );
count = cpriv->num_blue_values = priv->num_blue_values;
for ( n = 0; n < count; n++ )
cpriv->blue_values[n] = (FT_Pos)priv->blue_values[n];
count = cpriv->num_other_blues = priv->num_other_blues;
for ( n = 0; n < count; n++ )
cpriv->other_blues[n] = (FT_Pos)priv->other_blues[n];
count = cpriv->num_family_blues = priv->num_family_blues;
for ( n = 0; n < count; n++ )
cpriv->family_blues[n] = (FT_Pos)priv->family_blues[n];
count = cpriv->num_family_other_blues = priv->num_family_other_blues;
for ( n = 0; n < count; n++ )
cpriv->family_other_blues[n] = (FT_Pos)priv->family_other_blues[n];
cpriv->blue_scale = priv->blue_scale;
cpriv->blue_shift = (FT_Pos)priv->blue_shift;
cpriv->blue_fuzz = (FT_Pos)priv->blue_fuzz;
cpriv->standard_width = (FT_Pos)priv->standard_width[0];
cpriv->standard_height = (FT_Pos)priv->standard_height[0];
count = cpriv->num_snap_widths = priv->num_snap_widths;
for ( n = 0; n < count; n++ )
cpriv->snap_widths[n] = (FT_Pos)priv->snap_widths[n];
count = cpriv->num_snap_heights = priv->num_snap_heights;
for ( n = 0; n < count; n++ )
cpriv->snap_heights[n] = (FT_Pos)priv->snap_heights[n];
cpriv->force_bold = priv->force_bold;
cpriv->lenIV = priv->lenIV;
cpriv->language_group = priv->language_group;
cpriv->expansion_factor = priv->expansion_factor;
cpriv->subfont = subfont;
/* Initialize the random number generator. */
if ( face->root.internal->random_seed != -1 )
{
/* . If we have a face-specific seed, use it. */
/* If non-zero, update it to a positive value. */
subfont->random = (FT_UInt32)face->root.internal->random_seed;
if ( face->root.internal->random_seed )
{
do
{
face->root.internal->random_seed =
(FT_Int32)((PSAux_Service)face->psaux)->cff_random(
(FT_UInt32)face->root.internal->random_seed );
} while ( face->root.internal->random_seed < 0 );
}
}
if ( !subfont->random )
{
FT_UInt32 seed;
/* compute random seed from some memory addresses */
seed = (FT_UInt32)( (FT_Offset)(char*)&seed ^
(FT_Offset)(char*)&face ^
(FT_Offset)(char*)&subfont );
seed = seed ^ ( seed >> 10 ) ^ ( seed >> 20 );
if ( seed == 0 )
seed = 0x7384;
subfont->random = seed;
}
}
FT_LOCAL_DEF( void )
t1_decrypt( FT_Byte* buffer,
FT_Offset length,

4
src/psaux/psobjs.h
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@ -284,6 +284,10 @@ FT_BEGIN_HEADER
/*************************************************************************/
/*************************************************************************/
FT_LOCAL( void )
t1_make_subfont( T1_Face face,
CFF_SubFont subfont );
FT_LOCAL( void )
t1_decrypt( FT_Byte* buffer,
FT_Offset length,

7
src/type1/t1gload.c
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@ -23,6 +23,7 @@
#include FT_INTERNAL_STREAM_H
#include FT_OUTLINE_H
#include FT_INTERNAL_POSTSCRIPT_AUX_H
#include FT_INTERNAL_CFF_TYPES_H
#include FT_TYPE1_DRIVER_H
#include "t1errors.h"
@ -104,8 +105,14 @@
(FT_UInt)char_string->length );
else
{
CFF_SubFontRec subfont;
psaux->ps_decoder_init( decoder, TRUE, &psdecoder );
psaux->t1_make_subfont( face, &subfont );
psdecoder.current_subfont = &subfont;
error = decoder_funcs->parse_charstrings( &psdecoder,
(FT_Byte*)char_string->pointer,
(FT_ULong)char_string->length );