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[autofit] Introduce `styles'.

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This is the new top-level structure for handling glyph input data;
scripts are now defined separately.

* src/autofit/aftypes.h (SCRIPT): Updated.
(AF_ScriptClassRec): Move `blue_stringset' and `writing_system'
members to ...
(AF_Style_ClassRec): ... this new structure.
(AF_Style): New enumeration.
(AF_StyleMetricsRec): Replace `script' enumeration with
`style_class' pointer.
(AF_DEFINE_SCRIPT_CLASS, AF_DECLARE_SCRIPT_CLASS): Updated.
(AF_DEFINE_STYLE_CLASS, AF_DECLARE_STYLE_CLASS): New macros.

* src/autofit/afstyles.h: New file, using data from `afscript.h'.
* src/autofit/afscript.h: Updated.

* src/autofit/afcjk.c (af_cjk_metrics_init_widths,
af_cjk_metrics_init_blues, af_cjk_hint_edges): Updated.

* src/autofit/afglobal.c (SCRIPT): Updated.
(STYLE): Redefine macro to load `afstyles.h'.
(af_script_names) [FT_DEBUG_LEVEL_TRACE]: Replace with...
(af_style_names): ... this array.
(af_face_globals_compute_script_coverage): Renamed to...
(af_face_globals_compute_style_coverage): ... this.
Updated.
(af_face_globals_new, af_face_globals_free,
af_face_globals_get_metrics): Updated.

* src/autofit/afglobal.h (SCRIPT): Updated.
(STYLE): Redefine macro to load `afstyles.h'.
(AF_SCRIPT_FALLBACK): Update definition.  This will get more
refinements with later on.
(AF_SCRIPT_UNASSIGNED): Replace with...
(AF_STYLE_UNASSIGNED): ... this macro.
(AF_FaceGlobalsRec): Updated.

* src/autofit/aflatin.c (af_latin_metrics_init_widths,
af_latin_metrics_init_blues, af_latin_metrics_scale_dim,
af_latin_hint_edges): Updated.

* src/autofit/aflatin2.c (af_latin2_metrics_init_widths): Updated.
(af_ltn2_uniranges): Removed.

* src/autofit/afloader.c (af_loader_load_g, af_loader_load_glyph):
Updated.

* src/autofit/afpic.c (autofit_module_class_pic_init): Updated.
* src/autofit/afpic.h (AF_STYLE_CLASSES_GET): New macro.
(AFModulePIC): Add `af_style_classes' and `af_style_classes_rec'
members.

* src/autofit/afranges.h: Updated.

* src/autofit/rules.mk (AUTOF_DRV_H): Add `afstyles.h'.
This commit is contained in:
Werner Lemberg 2013-12-20 17:26:26 +01:00
parent d8324571f1
commit 974b193bcc
18 changed files with 388 additions and 181 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

60
ChangeLog
View File

@ -1,3 +1,63 @@
2013-12-20 Werner Lemberg <wl@gnu.org>
[autofit] Introduce `styles'.
This is the new top-level structure for handling glyph input data;
scripts are now defined separately.
* src/autofit/aftypes.h (SCRIPT): Updated.
(AF_ScriptClassRec): Move `blue_stringset' and `writing_system'
members to ...
(AF_Style_ClassRec): ... this new structure.
(AF_Style): New enumeration.
(AF_StyleMetricsRec): Replace `script' enumeration with
`style_class' pointer.
(AF_DEFINE_SCRIPT_CLASS, AF_DECLARE_SCRIPT_CLASS): Updated.
(AF_DEFINE_STYLE_CLASS, AF_DECLARE_STYLE_CLASS): New macros.
* src/autofit/afstyles.h: New file, using data from `afscript.h'.
* src/autofit/afscript.h: Updated.
* src/autofit/afcjk.c (af_cjk_metrics_init_widths,
af_cjk_metrics_init_blues, af_cjk_hint_edges): Updated.
* src/autofit/afglobal.c (SCRIPT): Updated.
(STYLE): Redefine macro to load `afstyles.h'.
(af_script_names) [FT_DEBUG_LEVEL_TRACE]: Replace with...
(af_style_names): ... this array.
(af_face_globals_compute_script_coverage): Renamed to...
(af_face_globals_compute_style_coverage): ... this.
Updated.
(af_face_globals_new, af_face_globals_free,
af_face_globals_get_metrics): Updated.
* src/autofit/afglobal.h (SCRIPT): Updated.
(STYLE): Redefine macro to load `afstyles.h'.
(AF_SCRIPT_FALLBACK): Update definition. This will get more
refinements with later on.
(AF_SCRIPT_UNASSIGNED): Replace with...
(AF_STYLE_UNASSIGNED): ... this macro.
(AF_FaceGlobalsRec): Updated.
* src/autofit/aflatin.c (af_latin_metrics_init_widths,
af_latin_metrics_init_blues, af_latin_metrics_scale_dim,
af_latin_hint_edges): Updated.
* src/autofit/aflatin2.c (af_latin2_metrics_init_widths): Updated.
(af_ltn2_uniranges): Removed.
* src/autofit/afloader.c (af_loader_load_g, af_loader_load_glyph):
Updated.
* src/autofit/afpic.c (autofit_module_class_pic_init): Updated.
* src/autofit/afpic.h (AF_STYLE_CLASSES_GET): New macro.
(AFModulePIC): Add `af_style_classes' and `af_style_classes_rec'
members.
* src/autofit/afranges.h: Updated.
* src/autofit/rules.mk (AUTOF_DRV_H): Add `afstyles.h'.
2013-12-19 Werner Lemberg <wl@gnu.org>
[autofit] Factor scripts and uniranges out of writing system files.

21
src/autofit/afcjk.c
View File

@ -75,10 +75,10 @@
FT_TRACE5(( "\n"
"cjk standard widths computation (script `%s')\n"
"cjk standard widths computation (style `%s')\n"
"===============================================\n"
"\n",
af_script_names[metrics->root.script] ));
af_style_names[metrics->root.style_class->style] ));
af_glyph_hints_init( hints, face->memory );
@ -92,8 +92,9 @@
AF_CJKMetricsRec dummy[1];
AF_Scaler scaler = &dummy->root.scaler;
AF_ScriptClass script_class =
AF_SCRIPT_CLASSES_GET[metrics->root.script];
AF_StyleClass style_class = metrics->root.style_class;
AF_ScriptClass script_class = AF_SCRIPT_CLASSES_GET
[style_class->script];
glyph_index = FT_Get_Char_Index( face, script_class->standard_char );
@ -228,7 +229,7 @@
AF_CJKAxis axis;
FT_Outline outline;
AF_ScriptClass sc = AF_SCRIPT_CLASSES_GET[metrics->root.script];
AF_StyleClass sc = metrics->root.style_class;
AF_Blue_Stringset bss = sc->blue_stringset;
const AF_Blue_StringRec* bs = &af_blue_stringsets[bss];
@ -250,9 +251,9 @@
#endif
/* we walk over the blue character strings as specified in the */
/* script's entry in the `af_blue_stringset' array, computing its */
/* extremum points (depending on the string properties) */
/* we walk over the blue character strings as specified in the */
/* style's entry in the `af_blue_stringset' array, computing its */
/* extremum points (depending on the string properties) */
FT_TRACE5(( "cjk blue zones computation\n"
"==========================\n"
@ -1669,9 +1670,9 @@
#endif
FT_TRACE5(( "cjk %s edge hinting (script `%s')\n",
FT_TRACE5(( "cjk %s edge hinting (style `%s')\n",
dim == AF_DIMENSION_VERT ? "horizontal" : "vertical",
af_script_names[hints->metrics->script] ));
af_style_names[hints->metrics->style_class->style] ));
/* we begin by aligning all stems relative to the blue zone */

4
src/autofit/afdummy.h
View File

@ -25,9 +25,7 @@
FT_BEGIN_HEADER
/* A dummy writing system and script class used when no hinting should be
* performed.
*/
/* A dummy writing system used when no hinting should be performed. */
AF_DECLARE_WRITING_SYSTEM_CLASS( af_dummy_writing_system_class )

105
src/autofit/afglobal.c
View File

@ -45,12 +45,10 @@
#undef SCRIPT
#define SCRIPT( s, S, d, ss, ws, dc ) \
#define SCRIPT( s, S, d, dc ) \
AF_DEFINE_SCRIPT_CLASS( \
af_ ## s ## _script_class, \
AF_SCRIPT_ ## S, \
ss, \
ws, \
af_ ## s ## _uniranges, \
dc )
@ -58,7 +56,7 @@
#undef SCRIPT
#define SCRIPT( s, S, d, ss, ws, dc ) \
#define SCRIPT( s, S, d, dc ) \
&af_ ## s ## _script_class,
FT_LOCAL_ARRAY_DEF( AF_ScriptClass )
@ -70,29 +68,55 @@
NULL /* do not remove */
};
#undef STYLE
#define STYLE( s, S, d, ws, sc, ss ) \
AF_DEFINE_STYLE_CLASS( \
af_ ## s ## _style_class, \
AF_STYLE_ ## S, \
ws, \
sc, \
ss )
#include "afstyles.h"
#undef STYLE
#define STYLE( s, S, d, ws, sc, ss ) \
&af_ ## s ## _style_class,
FT_LOCAL_ARRAY_DEF( AF_StyleClass )
af_style_classes[] =
{
#include "afstyles.h"
NULL /* do not remove */
};
#endif /* !FT_CONFIG_OPTION_PIC */
#ifdef FT_DEBUG_LEVEL_TRACE
#undef SCRIPT
#define SCRIPT( s, S, d, ss, ws, dc ) #s,
#undef STYLE
#define STYLE( s, S, d, ws, sc, ss ) #s,
FT_LOCAL_ARRAY_DEF( char* )
af_script_names[] =
af_style_names[] =
{
#include "afscript.h"
#include "afstyles.h"
};
#endif /* FT_DEBUG_LEVEL_TRACE */
/* Compute the script index of each glyph within a given face. */
/* Compute the style index of each glyph within a given face. */
static FT_Error
af_face_globals_compute_script_coverage( AF_FaceGlobals globals )
af_face_globals_compute_style_coverage( AF_FaceGlobals globals )
{
FT_Error error;
FT_Face face = globals->face;
@ -102,9 +126,9 @@
FT_UInt i;
/* the value AF_SCRIPT_UNASSIGNED means `uncovered glyph' */
/* the value AF_STYLE_UNASSIGNED means `uncovered glyph' */
FT_MEM_SET( globals->glyph_styles,
AF_SCRIPT_UNASSIGNED,
AF_STYLE_UNASSIGNED,
globals->glyph_count );
error = FT_Select_Charmap( face, FT_ENCODING_UNICODE );
@ -118,10 +142,13 @@
goto Exit;
}
/* scan each script in a Unicode charmap */
for ( ss = 0; AF_SCRIPT_CLASSES_GET[ss]; ss++ )
/* scan each style in a Unicode charmap */
for ( ss = 0; AF_STYLE_CLASSES_GET[ss]; ss++ )
{
AF_ScriptClass script_class = AF_SCRIPT_CLASSES_GET[ss];
AF_StyleClass style_class =
AF_STYLE_CLASSES_GET[ss];
AF_ScriptClass script_class =
AF_SCRIPT_CLASSES_GET[style_class->script];
AF_Script_UniRange range;
@ -130,7 +157,7 @@
/*
* Scan all Unicode points in the range and set the corresponding
* glyph script index.
* glyph style index.
*/
for ( range = script_class->script_uni_ranges;
range->first != 0;
@ -144,7 +171,7 @@
if ( gindex != 0 &&
gindex < (FT_ULong)globals->glyph_count &&
gstyles[gindex] == AF_SCRIPT_UNASSIGNED )
gstyles[gindex] == AF_STYLE_UNASSIGNED )
gstyles[gindex] = (FT_Byte)ss;
for (;;)
@ -155,7 +182,7 @@
break;
if ( gindex < (FT_ULong)globals->glyph_count &&
gstyles[gindex] == AF_SCRIPT_UNASSIGNED )
gstyles[gindex] == AF_STYLE_UNASSIGNED )
gstyles[gindex] = (FT_Byte)ss;
}
}
@ -176,16 +203,16 @@
* By default, all uncovered glyphs are set to the fallback script.
* XXX: Shouldn't we disable hinting or do something similar?
*/
if ( globals->module->fallback_script != AF_SCRIPT_UNASSIGNED )
if ( globals->module->fallback_script != AF_STYLE_UNASSIGNED )
{
FT_Long nn;
for ( nn = 0; nn < globals->glyph_count; nn++ )
{
if ( ( gstyles[nn] & ~AF_DIGIT ) == AF_SCRIPT_UNASSIGNED )
if ( ( gstyles[nn] & ~AF_DIGIT ) == AF_STYLE_UNASSIGNED )
{
gstyles[nn] &= ~AF_SCRIPT_UNASSIGNED;
gstyles[nn] &= ~AF_STYLE_UNASSIGNED;
gstyles[nn] |= globals->module->fallback_script;
}
}
@ -217,7 +244,7 @@
globals->glyph_styles = (FT_Byte*)( globals + 1 );
globals->module = module;
error = af_face_globals_compute_script_coverage( globals );
error = af_face_globals_compute_style_coverage( globals );
if ( error )
{
af_face_globals_free( globals );
@ -241,14 +268,14 @@
FT_UInt nn;
for ( nn = 0; nn < AF_SCRIPT_MAX; nn++ )
for ( nn = 0; nn < AF_STYLE_MAX; nn++ )
{
if ( globals->metrics[nn] )
{
AF_ScriptClass script_class =
AF_SCRIPT_CLASSES_GET[nn];
AF_StyleClass style_class =
AF_STYLE_CLASSES_GET[nn];
AF_WritingSystemClass writing_system_class =
AF_WRITING_SYSTEM_CLASSES_GET[script_class->writing_system];
AF_WRITING_SYSTEM_CLASSES_GET[style_class->writing_system];
if ( writing_system_class->style_metrics_done )
@ -275,9 +302,9 @@
{
AF_StyleMetrics metrics = NULL;
AF_Script script = (AF_Script)( options & 15 );
AF_Style style = (AF_Style)( options & 15 );
AF_WritingSystemClass writing_system_class;
AF_ScriptClass script_class;
AF_StyleClass style_class;
FT_Error error = FT_Err_Ok;
@ -288,17 +315,17 @@
goto Exit;
}
/* if we have a forced script (via `options'), use it, */
/* otherwise look into `glyph_styles' array */
if ( script == AF_SCRIPT_NONE || script + 1 >= AF_SCRIPT_MAX )
script = (AF_Script)( globals->glyph_styles[gindex] &
AF_SCRIPT_UNASSIGNED );
/* if we have a forced style (via `options'), use it, */
/* otherwise look into `glyph_styles' array */
if ( style == AF_STYLE_NONE_DEFAULT || style + 1 >= AF_STYLE_MAX )
style = (AF_Style)( globals->glyph_styles[gindex] &
AF_STYLE_UNASSIGNED );
script_class = AF_SCRIPT_CLASSES_GET[script];
style_class = AF_STYLE_CLASSES_GET[style];
writing_system_class = AF_WRITING_SYSTEM_CLASSES_GET
[script_class->writing_system];
[style_class->writing_system];
metrics = globals->metrics[script];
metrics = globals->metrics[style];
if ( metrics == NULL )
{
/* create the global metrics object if necessary */
@ -308,8 +335,8 @@
if ( FT_ALLOC( metrics, writing_system_class->style_metrics_size ) )
goto Exit;
metrics->script = script;
metrics->globals = globals;
metrics->style_class = style_class;
metrics->globals = globals;
if ( writing_system_class->style_metrics_init )
{
@ -325,7 +352,7 @@
}
}
globals->metrics[script] = metrics;
globals->metrics[style] = metrics;
}
Exit:

30
src/autofit/afglobal.h
View File

@ -32,7 +32,7 @@ FT_BEGIN_HEADER
af_writing_system_classes[];
#undef SCRIPT
#define SCRIPT( s, S, d, ss, ws, dc ) \
#define SCRIPT( s, S, d, dc ) \
AF_DECLARE_SCRIPT_CLASS( af_ ## s ## _script_class )
#include "afscript.h"
@ -40,24 +40,36 @@ FT_BEGIN_HEADER
FT_LOCAL_ARRAY( AF_ScriptClass )
af_script_classes[];
#undef STYLE
#define STYLE( s, S, d, ws, sc, ss ) \
AF_DECLARE_STYLE_CLASS( af_ ## s ## _style_class )
#include "afstyles.h"
FT_LOCAL_ARRAY( AF_StyleClass )
af_style_classes[];
#ifdef FT_DEBUG_LEVEL_TRACE
FT_LOCAL_ARRAY( char* )
af_script_names[];
af_style_names[];
#endif
/*
* Default values and flags for both autofitter globals (found in
* AF_ModuleRec) and face globals (in AF_FaceGlobalsRec).
*/
/* index of fallback script in `af_script_classes' */
/* index of fallback script in `af_style_classes' */
#ifdef AF_CONFIG_OPTION_CJK
#define AF_SCRIPT_FALLBACK AF_SCRIPT_HANI
#define AF_SCRIPT_FALLBACK AF_STYLE_HANI_DEFAULT
#else
#define AF_SCRIPT_FALLBACK AF_SCRIPT_NONE
#define AF_SCRIPT_FALLBACK AF_STYLE_NONE_DEFAULT
#endif
/* a bit mask indicating an uncovered glyph */
#define AF_SCRIPT_UNASSIGNED 0x7F
#define AF_STYLE_UNASSIGNED 0x7F
/* if this flag is set, we have an ASCII digit */
#define AF_DIGIT 0x80
@ -77,7 +89,7 @@ FT_BEGIN_HEADER
/*
* Note that glyph_styles[] maps each glyph to an index into the
* `af_script_classes' array.
* `af_style_classes' array.
*
*/
typedef struct AF_FaceGlobalsRec_
@ -89,7 +101,7 @@ FT_BEGIN_HEADER
/* per-face auto-hinter properties */
FT_UInt increase_x_height;
AF_StyleMetrics metrics[AF_SCRIPT_MAX];
AF_StyleMetrics metrics[AF_STYLE_MAX];
AF_Module module; /* to access global properties */
@ -98,7 +110,7 @@ FT_BEGIN_HEADER
/*
* model the global hints data for a given face, decomposed into
* script-specific items
* style-specific items
*/
FT_LOCAL( FT_Error )

8
src/autofit/afhints.h
View File

@ -27,7 +27,7 @@ FT_BEGIN_HEADER
/*
* The definition of outline glyph hints. These are shared by all
* script analysis routines (until now).
* writing system analysis routines (until now).
*/
typedef enum AF_Dimension_
@ -361,9 +361,9 @@ FT_BEGIN_HEADER
AF_AxisHintsRec axis[AF_DIMENSION_MAX];
FT_UInt32 scaler_flags; /* copy of scaler flags */
FT_UInt32 other_flags; /* free for script-specific */
/* implementations */
FT_UInt32 scaler_flags; /* copy of scaler flags */
FT_UInt32 other_flags; /* free for style-specific */
/* implementations */
AF_StyleMetrics metrics;
FT_Pos xmin_delta; /* used for warping */

37
src/autofit/aflatin.c
View File

@ -62,10 +62,10 @@
FT_TRACE5(( "\n"
"latin standard widths computation (script `%s')\n"
"=================================================\n"
"latin standard widths computation (style `%s')\n"
"================================================\n"
"\n",
af_script_names[metrics->root.script] ));
af_style_names[metrics->root.style_class->style] ));
af_glyph_hints_init( hints, face->memory );
@ -79,8 +79,9 @@
AF_LatinMetricsRec dummy[1];
AF_Scaler scaler = &dummy->root.scaler;
AF_ScriptClass script_class =
AF_SCRIPT_CLASSES_GET[metrics->root.script];
AF_StyleClass style_class = metrics->root.style_class;
AF_ScriptClass script_class = AF_SCRIPT_CLASSES_GET
[style_class->script];
glyph_index = FT_Get_Char_Index( face, script_class->standard_char );
@ -216,14 +217,14 @@
AF_LatinAxis axis = &metrics->axis[AF_DIMENSION_VERT];
FT_Outline outline;
AF_ScriptClass sc = AF_SCRIPT_CLASSES_GET[metrics->root.script];
AF_StyleClass sc = metrics->root.style_class;
AF_Blue_Stringset bss = sc->blue_stringset;
const AF_Blue_StringRec* bs = &af_blue_stringsets[bss];
/* we walk over the blue character strings as specified in the */
/* script's entry in the `af_blue_stringset' array */
/* we walk over the blue character strings as specified in the */
/* style's entry in the `af_blue_stringset' array */
FT_TRACE5(( "latin blue zones computation\n"
"============================\n"
@ -883,11 +884,11 @@
FT_TRACE5((
"af_latin_metrics_scale_dim:"
" x height alignment (script `%s'):\n"
" x height alignment (style `%s'):\n"
" "
" vertical scaling changed from %.4f to %.4f (by %d%%)\n"
"\n",
af_script_names[metrics->root.script],
af_style_names[metrics->root.style_class->style],
axis->org_scale / 65536.0,
scale / 65536.0,
( fitted - scaled ) * 100 / scaled ));
@ -910,9 +911,9 @@
metrics->root.scaler.y_delta = delta;
}
FT_TRACE5(( "%s widths (script `%s')\n",
FT_TRACE5(( "%s widths (style `%s')\n",
dim == AF_DIMENSION_HORZ ? "horizontal" : "vertical",
af_script_names[metrics->root.script] ));
af_style_names[metrics->root.style_class->style] ));
/* scale the widths */
for ( nn = 0; nn < axis->width_count; nn++ )
@ -937,15 +938,15 @@
#ifdef FT_DEBUG_LEVEL_TRACE
if ( axis->extra_light )
FT_TRACE5(( "`%s' script is extra light (at current resolution)\n"
FT_TRACE5(( "`%s' style is extra light (at current resolution)\n"
"\n",
af_script_names[metrics->root.script] ));
af_style_names[metrics->root.style_class->style] ));
#endif
if ( dim == AF_DIMENSION_VERT )
{
FT_TRACE5(( "blue zones (script `%s')\n",
af_script_names[metrics->root.script] ));
FT_TRACE5(( "blue zones (style `%s')\n",
af_style_names[metrics->root.style_class->style] ));
/* scale the blue zones */
for ( nn = 0; nn < axis->blue_count; nn++ )
@ -2152,9 +2153,9 @@
#endif
FT_TRACE5(( "latin %s edge hinting (script `%s')\n",
FT_TRACE5(( "latin %s edge hinting (style `%s')\n",
dim == AF_DIMENSION_VERT ? "horizontal" : "vertical",
af_script_names[hints->metrics->script] ));
af_style_names[hints->metrics->style_class->style] ));
/* we begin by aligning all stems relative to the blue zone */
/* if needed -- that's only for horizontal edges */

6
src/autofit/aflatin.h
View File

@ -46,8 +46,8 @@ FT_BEGIN_HEADER
/*
* The following declarations could be embedded in the file `aflatin.c';
* they have been made semi-public to allow alternate script hinters to
* re-use some of them.
* they have been made semi-public to allow alternate writing system
* hinters to re-use some of them.
*/
@ -161,7 +161,7 @@ FT_BEGIN_HEADER
/*
* The next functions shouldn't normally be exported. However, other
* scripts might like to use these functions as-is.
* writing systems might like to use these functions as-is.
*/
FT_LOCAL( FT_Error )
af_latin_hints_compute_segments( AF_GlyphHints hints,

39
src/autofit/aflatin2.c
View File

@ -78,7 +78,7 @@
glyph_index = FT_Get_Char_Index(
face,
metrics->root.script_class->standard_char );
metrics->root.style_class->standard_char );
if ( glyph_index == 0 )
goto Exit;
@ -2396,41 +2396,4 @@
)
/* XXX: this should probably fine tuned to differentiate better between */
/* scripts... */
static const AF_Script_UniRangeRec af_ltn2_uniranges[] =
{
AF_UNIRANGE_REC( 0x0020UL, 0x007FUL ), /* Basic Latin (no control chars) */
AF_UNIRANGE_REC( 0x00A0UL, 0x00FFUL ), /* Latin-1 Supplement (no control chars) */
AF_UNIRANGE_REC( 0x0100UL, 0x017FUL ), /* Latin Extended-A */
AF_UNIRANGE_REC( 0x0180UL, 0x024FUL ), /* Latin Extended-B */
AF_UNIRANGE_REC( 0x0250UL, 0x02AFUL ), /* IPA Extensions */
AF_UNIRANGE_REC( 0x02B0UL, 0x02FFUL ), /* Spacing Modifier Letters */
AF_UNIRANGE_REC( 0x0300UL, 0x036FUL ), /* Combining Diacritical Marks */
AF_UNIRANGE_REC( 0x0370UL, 0x03FFUL ), /* Greek and Coptic */
AF_UNIRANGE_REC( 0x0400UL, 0x04FFUL ), /* Cyrillic */
AF_UNIRANGE_REC( 0x0500UL, 0x052FUL ), /* Cyrillic Supplement */
AF_UNIRANGE_REC( 0x1D00UL, 0x1D7FUL ), /* Phonetic Extensions */
AF_UNIRANGE_REC( 0x1D80UL, 0x1DBFUL ), /* Phonetic Extensions Supplement */
AF_UNIRANGE_REC( 0x1DC0UL, 0x1DFFUL ), /* Combining Diacritical Marks Supplement */
AF_UNIRANGE_REC( 0x1E00UL, 0x1EFFUL ), /* Latin Extended Additional */
AF_UNIRANGE_REC( 0x1F00UL, 0x1FFFUL ), /* Greek Extended */
AF_UNIRANGE_REC( 0x2000UL, 0x206FUL ), /* General Punctuation */
AF_UNIRANGE_REC( 0x2070UL, 0x209FUL ), /* Superscripts and Subscripts */
AF_UNIRANGE_REC( 0x20A0UL, 0x20CFUL ), /* Currency Symbols */
AF_UNIRANGE_REC( 0x2150UL, 0x218FUL ), /* Number Forms */
AF_UNIRANGE_REC( 0x2460UL, 0x24FFUL ), /* Enclosed Alphanumerics */
AF_UNIRANGE_REC( 0x2C60UL, 0x2C7FUL ), /* Latin Extended-C */
AF_UNIRANGE_REC( 0x2DE0UL, 0x2DFFUL ), /* Cyrillic Extended-A */
AF_UNIRANGE_REC( 0x2E00UL, 0x2E7FUL ), /* Supplemental Punctuation */
AF_UNIRANGE_REC( 0xA640UL, 0xA69FUL ), /* Cyrillic Extended-B */
AF_UNIRANGE_REC( 0xA720UL, 0xA7FFUL ), /* Latin Extended-D */
AF_UNIRANGE_REC( 0xFB00UL, 0xFB06UL ), /* Alphab. Present. Forms (Latin Ligs) */
AF_UNIRANGE_REC( 0x1D400UL, 0x1D7FFUL ), /* Mathematical Alphanumeric Symbols */
AF_UNIRANGE_REC( 0x1F100UL, 0x1F1FFUL ), /* Enclosed Alphanumeric Supplement */
AF_UNIRANGE_REC( 0UL, 0UL )
};
/* END */

14
src/autofit/afloader.c
View File

@ -185,10 +185,9 @@
#ifdef FT_CONFIG_OPTION_PIC
AF_FaceGlobals globals = loader->globals;
#endif
AF_ScriptClass script_class =
AF_SCRIPT_CLASSES_GET[metrics->script];
AF_StyleClass style_class = metrics->style_class;
AF_WritingSystemClass writing_system_class =
AF_WRITING_SYSTEM_CLASSES_GET[script_class->writing_system];
AF_WRITING_SYSTEM_CLASSES_GET[style_class->writing_system];
if ( writing_system_class->style_hints_apply )
@ -531,13 +530,13 @@
if ( !error )
{
AF_StyleMetrics metrics;
FT_UInt options = AF_SCRIPT_NONE;
FT_UInt options = AF_STYLE_NONE_DEFAULT;
#ifdef FT_OPTION_AUTOFIT2
/* XXX: undocumented hook to activate the latin2 writing system */
if ( load_flags & ( 1UL << 20 ) )
options = AF_SCRIPT_LTN2;
options = AF_STYLE_LTN2_DEFAULT;
#endif
error = af_face_globals_get_metrics( loader->globals, gindex,
@ -547,10 +546,9 @@
#ifdef FT_CONFIG_OPTION_PIC
AF_FaceGlobals globals = loader->globals;
#endif
AF_ScriptClass script_class =
AF_SCRIPT_CLASSES_GET[metrics->script];
AF_StyleClass style_class = metrics->style_class;
AF_WritingSystemClass writing_system_class =
AF_WRITING_SYSTEM_CLASSES_GET[script_class->writing_system];
AF_WRITING_SYSTEM_CLASSES_GET[style_class->writing_system];
loader->metrics = metrics;

4
src/autofit/afmodule.c
View File

@ -60,8 +60,8 @@
globals = (AF_FaceGlobals)face->autohint.data;
if ( !globals )
{
/* trigger computation of the global script data */
/* in case it hasn't been done yet */
/* trigger computation of the global style data */
/* in case it hasn't been done yet */
error = af_face_globals_new( face, &globals, module );
if ( !error )
{

17
src/autofit/afpic.c
View File

@ -42,7 +42,7 @@
FT_AutoHinter_InterfaceRec* clazz );
/* forward declaration of PIC init functions from script classes */
/* forward declaration of PIC init functions from writing system classes */
#undef WRITING_SYSTEM
#define WRITING_SYSTEM( ws, WS ) /* empty */
@ -107,6 +107,11 @@
&container->af_script_classes_rec[ss];
container->af_script_classes[AF_SCRIPT_MAX - 1] = NULL;
for ( ss = 0; ss < AF_STYLE_MAX - 1; ss++ )
container->af_style_classes[ss] =
&container->af_style_classes_rec[ss];
container->af_style_classes[AF_STYLE_MAX - 1] = NULL;
#undef WRITING_SYSTEM
#define WRITING_SYSTEM( ws, WS ) \
FT_Init_Class_af_ ## ws ## _writing_system_class( \
@ -116,13 +121,21 @@
#include "afwrtsys.h"
#undef SCRIPT
#define SCRIPT( s, S, d, ss, ws, dc ) \
#define SCRIPT( s, S, d, dc ) \
FT_Init_Class_af_ ## s ## _script_class( \
&container->af_script_classes_rec[ss++] );
ss = 0;
#include "afscript.h"
#undef STYLE
#define STYLE( s, S, d, ws, sc, ss ) \
FT_Init_Class_af_ ## s ## _style_class( \
&container->af_style_classes_rec[ss++] );
ss = 0;
#include "afstyles.h"
FT_Init_Class_af_autofitter_interface(
library, &container->af_autofitter_interface );

8
src/autofit/afpic.h
View File

@ -32,6 +32,7 @@ FT_BEGIN_HEADER
#define AF_WRITING_SYSTEM_CLASSES_GET af_writing_system_classes
#define AF_SCRIPT_CLASSES_GET af_script_classes
#define AF_STYLE_CLASSES_GET af_style_classes
#define AF_INTERFACE_GET af_autofitter_interface
#else /* FT_CONFIG_OPTION_PIC */
@ -57,6 +58,11 @@ FT_BEGIN_HEADER
AF_ScriptClassRec af_script_classes_rec
[AF_SCRIPT_MAX - 1];
AF_StyleClass af_style_classes
[AF_STYLE_MAX];
AF_StyleClassRec af_style_classes_rec
[AF_STYLE_MAX - 1];
FT_AutoHinter_InterfaceRec af_autofitter_interface;
} AFModulePIC;
@ -74,6 +80,8 @@ FT_BEGIN_HEADER
( GET_PIC( FT_FACE_LIBRARY( globals->face ) )->af_writing_system_classes )
#define AF_SCRIPT_CLASSES_GET \
( GET_PIC( FT_FACE_LIBRARY( globals->face ) )->af_script_classes )
#define AF_STYLE_CLASSES_GET \
( GET_PIC( FT_FACE_LIBRARY( globals->face ) )->af_style_classes )
#define AF_INTERFACE_GET \
( GET_PIC( library )->af_autofitter_interface )

2
src/autofit/afranges.h
View File

@ -26,7 +26,7 @@
FT_BEGIN_HEADER
#undef SCRIPT
#define SCRIPT( s, S, d, ss, ws, dc ) \
#define SCRIPT( s, S, d, dc ) \
extern const AF_Script_UniRangeRec af_ ## s ## _uniranges[];
#include "afscript.h"

22
src/autofit/afscript.h
View File

@ -24,53 +24,31 @@
SCRIPT( cyrl, CYRL,
"Cyrillic",
AF_BLUE_STRINGSET_CYRL,
AF_WRITING_SYSTEM_LATIN,
0x43E ) /* о */
SCRIPT( deva, DEVA,
"Indic scripts",
(AF_Blue_Stringset)0, /* XXX */
AF_WRITING_SYSTEM_INDIC,
'o' ) /* XXX */
SCRIPT( none, NONE,
"no script",
(AF_Blue_Stringset)0,
AF_WRITING_SYSTEM_DUMMY,
'\0' )
SCRIPT( grek, GREK,
"Greek",
AF_BLUE_STRINGSET_GREK,
AF_WRITING_SYSTEM_LATIN,
0x3BF ) /* ο */
SCRIPT( hani, HANI,
"CJKV ideographs",
AF_BLUE_STRINGSET_HANI,
AF_WRITING_SYSTEM_CJK,
0x7530 ) /* 田 */
SCRIPT( hebr, HEBR,
"Hebrew",
AF_BLUE_STRINGSET_HEBR,
AF_WRITING_SYSTEM_LATIN,
0x5DD ) /* ם */
SCRIPT( latn, LATN,
"Latin",
AF_BLUE_STRINGSET_LATN,
AF_WRITING_SYSTEM_LATIN,
'o' )
#ifdef FT_OPTION_AUTOFIT2
SCRIPT( ltn2, LTN2,
"Latin 2",
AF_BLUE_STRINGSET_LATN,
AF_WRITING_SYSTEM_LATIN2,
'o' )
#endif
/* END */

76
src/autofit/afstyles.h Normal file
View File

@ -0,0 +1,76 @@
/***************************************************************************/
/* */
/* afstyles.h */
/* */
/* Auto-fitter styles (specification only). */
/* */
/* Copyright 2013 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
/* modified, and distributed under the terms of the FreeType project */
/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
/* this file you indicate that you have read the license and */
/* understand and accept it fully. */
/* */
/***************************************************************************/
/* The following part can be included multiple times. */
/* Define `STYLE' as needed. */
/* Add new styles here. */
STYLE( cyrl_default, CYRL_DEFAULT,
"Cyrillic default style",
AF_WRITING_SYSTEM_LATIN,
AF_SCRIPT_CYRL,
AF_BLUE_STRINGSET_CYRL )
STYLE( deva_default, DEVA_DEFAULT,
"Indic scripts default style",
AF_WRITING_SYSTEM_INDIC,
AF_SCRIPT_DEVA,
(AF_Blue_Stringset)0 ) /* XXX */
STYLE( none_default, NONE_DEFAULT,
"no style",
AF_WRITING_SYSTEM_DUMMY,
AF_SCRIPT_NONE,
(AF_Blue_Stringset)0 )
STYLE( grek_default, GREK_DEFAULT,
"Greek default style",
AF_WRITING_SYSTEM_LATIN,
AF_SCRIPT_GREK,
AF_BLUE_STRINGSET_GREK )
STYLE( hani_default, HANI_DEFAULT,
"CJKV ideographs default style",
AF_WRITING_SYSTEM_CJK,
AF_SCRIPT_HANI,
AF_BLUE_STRINGSET_HANI )
STYLE( hebr_default, HEBR_DEFAULT,
"Hebrew default style",
AF_WRITING_SYSTEM_LATIN,
AF_SCRIPT_HEBR,
AF_BLUE_STRINGSET_HEBR )
STYLE( latn_default, LATN_DEFAULT,
"Latin default style",
AF_WRITING_SYSTEM_LATIN,
AF_SCRIPT_LATN,
AF_BLUE_STRINGSET_LATN )
#ifdef FT_OPTION_AUTOFIT2
STYLE( ltn2_default, LTN2_DEFAULT,
"Latin 2 default style",
AF_WRITING_SYSTEM_LATIN2,
AF_SCRIPT_LATN,
AF_BLUE_STRINGSET_LATN )
#endif
/* END */

115
src/autofit/aftypes.h
View File

@ -20,7 +20,7 @@
*
* The auto-fitter is a complete rewrite of the old auto-hinter.
* Its main feature is the ability to differentiate between different
* writing systems in order to apply script-specific rules.
* writing systems and scripts in order to apply specific rules.
*
* The code has also been compartmentized into several entities that
* should make algorithmic experimentation easier than with the old
@ -200,7 +200,7 @@ extern void* _af_debug_hints;
typedef struct AF_StyleMetricsRec_* AF_StyleMetrics;
/* This function parses an FT_Face to compute global metrics for
* a specific script.
* a specific style.
*/
typedef FT_Error
(*AF_WritingSystem_InitMetricsFunc)( AF_StyleMetrics metrics,
@ -296,14 +296,14 @@ extern void* _af_debug_hints;
/*
* Each script is associated with a set of Unicode ranges that gets used
* to test whether the font face supports the script. It also references
* the writing system it belongs to.
* to test whether the font face supports the script.
*
* We use four-letter script tags from the OpenType specification.
* We use four-letter script tags from the OpenType specification,
* extended by `NONE', which indicates `no script'.
*/
#undef SCRIPT
#define SCRIPT( s, S, d, ss, ws, dc ) \
#define SCRIPT( s, S, d, dc ) \
AF_SCRIPT_ ## S,
/* The list of known scripts. */
@ -331,9 +331,7 @@ extern void* _af_debug_hints;
typedef struct AF_ScriptClassRec_
{
AF_Script script;
AF_Blue_Stringset blue_stringset;
AF_WritingSystem writing_system;
AF_Script script;
AF_Script_UniRange script_uni_ranges; /* last must be { 0, 0 } */
FT_UInt32 standard_char; /* for default width and height */
@ -343,6 +341,47 @@ extern void* _af_debug_hints;
typedef const AF_ScriptClassRec* AF_ScriptClass;
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** S T Y L E S *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
/*
* The topmost structure for modelling the auto-hinter glyph input data
* is a `style class', grouping everything together.
*/
#undef STYLE
#define STYLE( s, S, d, ws, sc, ss ) \
AF_STYLE_ ## S,
/* The list of known styles. */
typedef enum AF_Style_
{
#include "afstyles.h"
AF_STYLE_MAX /* do not remove */
} AF_Style;
typedef struct AF_StyleClassRec_
{
AF_Style style;
AF_WritingSystem writing_system;
AF_Script script;
AF_Blue_Stringset blue_stringset;
} AF_StyleClassRec;
typedef const AF_StyleClassRec* AF_StyleClass;
/*************************************************************************/
/*************************************************************************/
/***** *****/
@ -359,7 +398,7 @@ extern void* _af_debug_hints;
typedef struct AF_StyleMetricsRec_
{
AF_Script script;
AF_StyleClass style_class;
AF_ScalerRec scaler;
FT_Bool digits_have_same_width;
@ -406,21 +445,37 @@ extern void* _af_debug_hints;
#define AF_DEFINE_SCRIPT_CLASS( \
script_class, \
script_, \
blue_stringset_, \
writing_system_, \
script, \
ranges, \
std_char ) \
FT_CALLBACK_TABLE_DEF \
const AF_ScriptClassRec script_class = \
{ \
script_, \
blue_stringset_, \
writing_system_, \
script, \
ranges, \
std_char \
};
#define AF_DECLARE_STYLE_CLASS( style_class ) \
FT_CALLBACK_TABLE const AF_StyleClassRec \
style_class;
#define AF_DEFINE_STYLE_CLASS( \
style_class, \
style, \
writing_system, \
script, \
blue_stringset ) \
FT_CALLBACK_TABLE_DEF \
const AF_StyleClassRec style_class = \
{ \
style, \
writing_system, \
script, \
blue_stringset \
};
#else /* FT_CONFIG_OPTION_PIC */
#define AF_DECLARE_WRITING_SYSTEM_CLASS( writing_system_class ) \
@ -458,21 +513,37 @@ extern void* _af_debug_hints;
#define AF_DEFINE_SCRIPT_CLASS( \
script_class, \
script_, \
blue_string_set_, \
writing_system_, \
script, \
ranges, \
std_char ) \
FT_LOCAL_DEF( void ) \
FT_Init_Class_ ## script_class( AF_ScriptClassRec* ac ) \
{ \
ac->script = script_; \
ac->blue_stringset = blue_stringset_; \
ac->writing_system = writing_system_; \
ac->script = script; \
ac->script_uni_ranges = ranges; \
ac->standard_char = std_char; \
}
#define AF_DECLARE_STYLE_CLASS( style_class ) \
FT_LOCAL( void ) \
FT_Init_Class_ ## style_class( AF_StyleClassRec* ac );
#define AF_DEFINE_STYLE_CLASS( \
style_class, \
style, \
writing_system, \
script, \
blue_stringset ) \
FT_LOCAL_DEF( void ) \
FT_Init_Class_ ## style_class( AF_StyleClassRec* ac ) \
{ \
ac->style = style; \
ac->writing_system = writing_system; \
ac->script = script; \
ac->blue_stringset = blue_stringset; \
}
#endif /* FT_CONFIG_OPTION_PIC */

1
src/autofit/rules.mk
View File

@ -44,6 +44,7 @@ AUTOF_DRV_SRC := $(AUTOF_DIR)/afangles.c \
AUTOF_DRV_H := $(AUTOF_DRV_SRC:%c=%h) \
$(AUTOF_DIR)/aferrors.h \
$(AUTOF_DIR)/afscript.h \
$(AUTOF_DIR)/afstyles.h \
$(AUTOF_DIR)/aftypes.h \
$(AUTOF_DIR)/afwrtsys.h