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[autofit] Use string of standard characters.

Browse Source 
This is more flexible; additionally, it would allow character
clusters.

* src/autofit/aftypes.h (SCRIPT, AF_DEFINE_SCRIPT_CLASS): Updated.
(AF_ScriptClassRec): Replace `standard_char[123]' with
`standard_charstring'.

* src/autofit/afscript.h: Replace last three character arguments
of the `SCRIPT' calls with a string parameter, holding the standard
characters (in UTF-8 encoding) separated with spaces.

* src/autofit/afglobal.c, src/autofit/afglobal.h,
src/autofit/afpic.c, src/autofit/afranges.c, src/autofit/hbshim.c
(SCRIPT): Updated.

* src/autofit/afcjk.c (af_cjk_metrics_init_widths),
src/autofit/aflatin.c (af_latin_metrics_init_widths): Updated.
This commit is contained in:
Werner Lemberg 2015-12-06 09:58:18 +01:00
parent a8a54c3060
commit f45c0bf963
10 changed files with 113 additions and 121 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
ChangeLog
View File

@ -1,3 +1,25 @@
2015-12-06 Werner Lemberg <wl@gnu.org>
[autofit] Use string of standard characters.
This is more flexible; additionally, it would allow character
clusters.
* src/autofit/aftypes.h (SCRIPT, AF_DEFINE_SCRIPT_CLASS): Updated.
(AF_ScriptClassRec): Replace `standard_char[123]' with
`standard_charstring'.
* src/autofit/afscript.h: Replace last three character arguments
of the `SCRIPT' calls with a string parameter, holding the standard
characters (in UTF-8 encoding) separated with spaces.
* src/autofit/afglobal.c, src/autofit/afglobal.h,
src/autofit/afpic.c, src/autofit/afranges.c, src/autofit/hbshim.c
(SCRIPT): Updated.
* src/autofit/afcjk.c (af_cjk_metrics_init_widths),
src/autofit/aflatin.c (af_latin_metrics_init_widths): Updated.
2015-12-05 Werner Lemberg <wl@gnu.org>
* src/autofit/afblue.dat: Separate blue zone characters with spaces.
@ -425,7 +447,7 @@
(PFR_CHECK_SIZE): ... this.
(PFR_SIZE): [!PFR_CONFIG_NO_CHECKS]: Define to PFR_CHECK_SIZE.
* src/pfr/pfrload.c (pfr_log_font_count): Check `count'.
* src/pfr/pfrload.c (pfr_log_font_count): Check `count'.
(pfr_extra_item_load_kerning_pairs): Remove tracing message.
(pfr_phy_font_load): Use PFR_CHECK_SIZE where appropriate.
Allocate `chars' after doing a size checks.
@ -1017,7 +1039,7 @@
* src/autofit/afstyles.h: Add Lao data.
2015-09-27 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
[base] Fix a leak by broken sfnt-PS or resource fork (#46028).
open_face_from_buffer() frees passed buffer if valid font

57
src/autofit/afcjk.c
View File

@ -101,45 +101,36 @@
AF_ScriptClass script_class = AF_SCRIPT_CLASSES_GET
[style_class->script];
FT_UInt32 standard_char;
const char* p;
FT_ULong ch;
standard_char = script_class->standard_char1;
af_get_char_index( &metrics->root,
standard_char,
&glyph_index,
&y_offset );
if ( !glyph_index )
p = script_class->standard_charstring;
/* We check a list of standard characters. The first match wins. */
glyph_index = 0;
while ( *p )
{
if ( script_class->standard_char2 )
{
standard_char = script_class->standard_char2;
af_get_char_index( &metrics->root,
standard_char,
&glyph_index,
&y_offset );
if ( !glyph_index )
{
if ( script_class->standard_char3 )
{
standard_char = script_class->standard_char3;
af_get_char_index( &metrics->root,
standard_char,
&glyph_index,
&y_offset );
if ( !glyph_index )
goto Exit;
}
else
goto Exit;
}
}
else
goto Exit;
while ( *p == ' ' )
p++;
GET_UTF8_CHAR( ch, p );
af_get_char_index( &metrics->root,
ch,
&glyph_index,
&y_offset );
if ( glyph_index )
break;
}
if ( !glyph_index )
goto Exit;
FT_TRACE5(( "standard character: U+%04lX (glyph index %d)\n",
standard_char, glyph_index ));
ch, glyph_index ));
error = FT_Load_Glyph( face, glyph_index, FT_LOAD_NO_SCALE );
if ( error || face->glyph->outline.n_points <= 0 )

6
src/autofit/afglobal.c
View File

@ -42,13 +42,13 @@
#undef SCRIPT
#define SCRIPT( s, S, d, h, sc1, sc2, sc3 ) \
#define SCRIPT( s, S, d, h, ss ) \
AF_DEFINE_SCRIPT_CLASS( \
af_ ## s ## _script_class, \
AF_SCRIPT_ ## S, \
af_ ## s ## _uniranges, \
af_ ## s ## _nonbase_uniranges, \
sc1, sc2, sc3 )
ss )
#include "afscript.h"
@ -83,7 +83,7 @@
#undef SCRIPT
#define SCRIPT( s, S, d, h, sc1, sc2, sc3 ) \
#define SCRIPT( s, S, d, h, ss ) \
&af_ ## s ## _script_class,
FT_LOCAL_ARRAY_DEF( AF_ScriptClass )

2
src/autofit/afglobal.h
View File

@ -34,7 +34,7 @@ FT_BEGIN_HEADER
#undef SCRIPT
#define SCRIPT( s, S, d, h, sc1, sc2, sc3 ) \
#define SCRIPT( s, S, d, h, ss ) \
AF_DECLARE_SCRIPT_CLASS( af_ ## s ## _script_class )
#include "afscript.h"

63
src/autofit/aflatin.c
View File

@ -92,52 +92,41 @@
AF_ScriptClass script_class = AF_SCRIPT_CLASSES_GET
[style_class->script];
FT_UInt32 standard_char;
const char* p;
FT_ULong ch;
p = script_class->standard_charstring;
/*
* We check more than a single standard character to catch features
* like `c2sc' (small caps from caps) that don't contain lowercase
* letters by definition, or other features that mainly operate on
* numerals.
* We check a list of standard characters to catch features like
* `c2sc' (small caps from caps) that don't contain lowercase letters
* by definition, or other features that mainly operate on numerals.
* The first match wins.
*/
standard_char = script_class->standard_char1;
af_get_char_index( &metrics->root,
standard_char,
&glyph_index,
&y_offset );
if ( !glyph_index )
glyph_index = 0;
while ( *p )
{
if ( script_class->standard_char2 )
{
standard_char = script_class->standard_char2;
af_get_char_index( &metrics->root,
standard_char,
&glyph_index,
&y_offset );
if ( !glyph_index )
{
if ( script_class->standard_char3 )
{
standard_char = script_class->standard_char3;
af_get_char_index( &metrics->root,
standard_char,
&glyph_index,
&y_offset );
if ( !glyph_index )
goto Exit;
}
else
goto Exit;
}
}
else
goto Exit;
while ( *p == ' ' )
p++;
GET_UTF8_CHAR( ch, p );
af_get_char_index( &metrics->root,
ch,
&glyph_index,
&y_offset );
if ( glyph_index )
break;
}
if ( !glyph_index )
goto Exit;
FT_TRACE5(( "standard character: U+%04lX (glyph index %d)\n",
standard_char, glyph_index ));
ch, glyph_index ));
error = FT_Load_Glyph( face, glyph_index, FT_LOAD_NO_SCALE );
if ( error || face->glyph->outline.n_points <= 0 )

2
src/autofit/afpic.c
View File

@ -122,7 +122,7 @@
#include "afwrtsys.h"
#undef SCRIPT
#define SCRIPT( s, S, d, h, sc1, sc2, sc3 ) \
#define SCRIPT( s, S, d, h, sss ) \
FT_Init_Class_af_ ## s ## _script_class( \
&container->af_script_classes_rec[ss++] );

4
src/autofit/afranges.h
View File

@ -26,13 +26,13 @@
FT_BEGIN_HEADER
#undef SCRIPT
#define SCRIPT( s, S, d, h, sc1, sc2, sc3 ) \
#define SCRIPT( s, S, d, h, ss ) \
extern const AF_Script_UniRangeRec af_ ## s ## _uniranges[];
#include "afscript.h"
#undef SCRIPT
#define SCRIPT( s, S, d, h, sc1, sc2, sc3 ) \
#define SCRIPT( s, S, d, h, ss ) \
extern const AF_Script_UniRangeRec af_ ## s ## _nonbase_uniranges[];
#include "afscript.h"

50
src/autofit/afscript.h
View File

@ -33,126 +33,126 @@
SCRIPT( arab, ARAB,
"Arabic",
HB_SCRIPT_ARABIC,
0x644, 0x62D, 0x640 ) /* ل ح ـ */
"\xD9\x84 \xD8\xAD \xD9\x80" ) /* ل ح ـ */
SCRIPT( cyrl, CYRL,
"Cyrillic",
HB_SCRIPT_CYRILLIC,
0x43E, 0x41E, 0x0 ) /* о О */
"\xD0\xBE \xD0\x9E" ) /* о О */
SCRIPT( deva, DEVA,
"Devanagari",
HB_SCRIPT_DEVANAGARI,
0x920, 0x935, 0x91F ) /* ठ व ट */
"\xE0\xA4\xA0 \xE0\xA4\xB5 \xE0\xA4\x9F" ) /* ठ व ट */
SCRIPT( grek, GREK,
"Greek",
HB_SCRIPT_GREEK,
0x3BF, 0x39F, 0x0 ) /* ο Ο */
"\xCE\xBF \xCE\x9F" ) /* ο Ο */
SCRIPT( hebr, HEBR,
"Hebrew",
HB_SCRIPT_HEBREW,
0x5DD, 0x0, 0x0 ) /* ם */
"\xD7\x9D" ) /* ם */
/* only digit zero has a simple shape in the Lao script */
SCRIPT( lao, LAO,
"Lao",
HB_SCRIPT_LAO,
0xED0, 0x0, 0x0 ) /* ໐ */
"\xE0\xBB\x90" ) /* ໐ */
SCRIPT( latn, LATN,
"Latin",
HB_SCRIPT_LATIN,
'o', 'O', '0' )
"o O 0" )
SCRIPT( latb, LATB,
"Latin Subscript Fallback",
HB_SCRIPT_INVALID,
0x2092, 0x2080, 0x0 ) /* ₒ ₀ */
"\xE2\x82\x92 \xE2\x82\x80" ) /* ₒ ₀ */
SCRIPT( latp, LATP,
"Latin Superscript Fallback",
HB_SCRIPT_INVALID,
0x1D52, 0x1D3C, 0x2070 ) /* ᵒ ᴼ ⁰ */
"\xE1\xB5\x92 \xE1\xB4\xBC \xE2\x81\xB0" ) /* ᵒ ᴼ ⁰ */
SCRIPT( none, NONE,
"no script",
HB_SCRIPT_INVALID,
0x0, 0x0, 0x0 )
NULL )
/* there are no simple forms for letters; we thus use two digit shapes */
SCRIPT( telu, TELU,
"Telugu",
HB_SCRIPT_TELUGU,
0xC66, 0xC67, 0x0 ) /* ౦ ౧ */
"\xE0\xB1\xA6 \xE0\xB1\xA7" ) /* ౦ ౧ */
SCRIPT( thai, THAI,
"Thai",
HB_SCRIPT_THAI,
0xE32, 0xE45, 0xE50 ) /* า ๅ ๐ */
"\xE0\xB8\xB2 \xE0\xB9\x85 \xE0\xB9\x90" ) /* า ๅ ๐ */
#ifdef AF_CONFIG_OPTION_INDIC
SCRIPT( beng, BENG,
"Bengali",
HB_SCRIPT_BENGALI,
'o', 0x0, 0x0 ) /* XXX */
"o" ) /* XXX */
SCRIPT( gujr, GUJR,
"Gujarati",
HB_SCRIPT_GUJARATI,
'o', 0x0, 0x0 ) /* XXX */
"o" ) /* XXX */
SCRIPT( guru, GURU,
"Gurmukhi",
HB_SCRIPT_GURMUKHI,
'o', 0x0, 0x0 ) /* XXX */
"o" ) /* XXX */
SCRIPT( knda, KNDA,
"Kannada",
HB_SCRIPT_KANNADA,
'o', 0x0, 0x0 ) /* XXX */
"o" ) /* XXX */
SCRIPT( limb, LIMB,
"Limbu",
HB_SCRIPT_LIMBU,
'o', 0x0, 0x0 ) /* XXX */
"o" ) /* XXX */
SCRIPT( mlym, MLYM,
"Malayalam",
HB_SCRIPT_MALAYALAM,
'o', 0x0, 0x0 ) /* XXX */
"o" ) /* XXX */
SCRIPT( orya, ORYA,
"Oriya",
HB_SCRIPT_ORIYA,
'o', 0x0, 0x0 ) /* XXX */
"o" ) /* XXX */
SCRIPT( sinh, SINH,
"Sinhala",
HB_SCRIPT_SINHALA,
'o', 0x0, 0x0 ) /* XXX */
"o" ) /* XXX */
SCRIPT( sund, SUND,
"Sundanese",
HB_SCRIPT_SUNDANESE,
'o', 0x0, 0x0 ) /* XXX */
"o" ) /* XXX */
SCRIPT( sylo, SYLO,
"Syloti Nagri",
HB_SCRIPT_SYLOTI_NAGRI,
'o', 0x0, 0x0 ) /* XXX */
"o" ) /* XXX */
SCRIPT( taml, TAML,
"Tamil",
HB_SCRIPT_TAMIL,
'o', 0x0, 0x0 ) /* XXX */
"o" ) /* XXX */
SCRIPT( tibt, TIBT,
"Tibetan",
HB_SCRIPT_TIBETAN,
'o', 0x0, 0x0 ) /* XXX */
"o" ) /* XXX */
#endif /* AF_CONFIG_OPTION_INDIC */
@ -161,7 +161,7 @@
SCRIPT( hani, HANI,
"CJKV ideographs",
HB_SCRIPT_HAN,
0x7530, 0x56D7, 0x0 ) /* 田囗 */
"\xE7\x94\xB0 \xE5\x9B\x97" ) /* 田 囗 */
#endif /* AF_CONFIG_OPTION_CJK */

22
src/autofit/aftypes.h
View File

@ -309,7 +309,7 @@ extern void* _af_debug_hints;
*/
#undef SCRIPT
#define SCRIPT( s, S, d, h, sc1, sc2, sc3 ) \
#define SCRIPT( s, S, d, h, ss ) \
AF_SCRIPT_ ## S,
/* The list of known scripts. */
@ -343,9 +343,7 @@ extern void* _af_debug_hints;
AF_Script_UniRange script_uni_ranges;
AF_Script_UniRange script_uni_nonbase_ranges;
FT_UInt32 standard_char1; /* for default width and height */
FT_UInt32 standard_char2; /* ditto */
FT_UInt32 standard_char3; /* ditto */
const char* standard_charstring; /* for default width and height */
} AF_ScriptClassRec;
@ -524,18 +522,14 @@ extern void* _af_debug_hints;
script, \
ranges, \
nonbase_ranges, \
std_char1, \
std_char2, \
std_char3 ) \
std_charstring ) \
FT_CALLBACK_TABLE_DEF \
const AF_ScriptClassRec script_class = \
{ \
script, \
ranges, \
nonbase_ranges, \
std_char1, \
std_char2, \
std_char3 \
std_charstring, \
};
@ -601,18 +595,14 @@ extern void* _af_debug_hints;
script_, \
ranges, \
nonbase_ranges, \
std_char1, \
std_char2, \
std_char3 ) \
std_charstring ) \
FT_LOCAL_DEF( void ) \
FT_Init_Class_ ## script_class( AF_ScriptClassRec* ac ) \
{ \
ac->script = script_; \
ac->script_uni_ranges = ranges; \
ac->script_uni_nonbase_ranges = nonbase_ranges; \
ac->standard_char1 = std_char1; \
ac->standard_char2 = std_char2; \
ac->standard_char3 = std_char3; \
ac->standard_charstring = std_charstring; \
}

2
src/autofit/hbshim.c
View File

@ -86,7 +86,7 @@
/* load HarfBuzz script tags */
#undef SCRIPT
#define SCRIPT( s, S, d, h, sc1, sc2, sc3 ) h,
#define SCRIPT( s, S, d, h, ss ) h,
static const hb_script_t scripts[] =