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authormarha <marha@users.sourceforge.net>2013-02-13 09:55:16 +0100
committermarha <marha@users.sourceforge.net>2013-02-13 09:55:16 +0100
commit88bcd02cfecbf8ba9cf726b0d337c56f9c9b2bc4 (patch)
treeded42639873b943c7ec97b06961ad067228652d1 /freetype/src/truetype
parent3247a4e031a7d5160332c0d7ca2a91a516c082bb (diff)
parentaaf21968deb85b635cb6aa6544df233ea5981346 (diff)
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Merge remote-tracking branch 'origin/released'
* origin/released: Update to following packages: Conflicts: freetype/src/autofit/afhints.c freetype/src/autofit/afmodule.c freetype/src/psaux/psconv.c freetype/src/sfnt/sfntpic.h openssl/Makefile openssl/util/pl/VC-32.pl
Diffstat (limited to 'freetype/src/truetype')
-rw-r--r--freetype/src/truetype/rules.mk5
-rw-r--r--freetype/src/truetype/truetype.c3
-rw-r--r--freetype/src/truetype/ttdriver.c39
-rw-r--r--freetype/src/truetype/ttgload.c163
-rw-r--r--freetype/src/truetype/ttgxvar.c59
-rw-r--r--freetype/src/truetype/ttinterp.c824
-rw-r--r--freetype/src/truetype/ttinterp.h79
-rw-r--r--freetype/src/truetype/ttobjs.c10
-rw-r--r--freetype/src/truetype/ttobjs.h18
-rw-r--r--freetype/src/truetype/ttpic.c11
-rw-r--r--freetype/src/truetype/ttpic.h31
-rw-r--r--freetype/src/truetype/ttsubpix.c265
-rw-r--r--freetype/src/truetype/ttsubpix.h908
13 files changed, 2177 insertions, 238 deletions
diff --git a/freetype/src/truetype/rules.mk b/freetype/src/truetype/rules.mk
index 507ef16b0..d4b69f578 100644
--- a/freetype/src/truetype/rules.mk
+++ b/freetype/src/truetype/rules.mk
@@ -3,7 +3,7 @@
#
-# Copyright 1996-2000, 2001, 2003, 2004, 2011 by
+# Copyright 1996-2001, 2003-2004, 2011-2012 by
# David Turner, Robert Wilhelm, and Werner Lemberg.
#
# This file is part of the FreeType project, and may only be used, modified,
@@ -31,7 +31,8 @@ TT_DRV_SRC := $(TT_DIR)/ttdriver.c \
$(TT_DIR)/ttinterp.c \
$(TT_DIR)/ttobjs.c \
$(TT_DIR)/ttpic.c \
- $(TT_DIR)/ttpload.c
+ $(TT_DIR)/ttpload.c \
+ $(TT_DIR)/ttsubpix.c
# TrueType driver headers
#
diff --git a/freetype/src/truetype/truetype.c b/freetype/src/truetype/truetype.c
index 4bd120978..576912b21 100644
--- a/freetype/src/truetype/truetype.c
+++ b/freetype/src/truetype/truetype.c
@@ -4,7 +4,7 @@
/* */
/* FreeType TrueType driver component (body only). */
/* */
-/* Copyright 1996-2001, 2004, 2006 by */
+/* Copyright 1996-2001, 2004, 2006, 2012 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -27,6 +27,7 @@
#ifdef TT_USE_BYTECODE_INTERPRETER
#include "ttinterp.c"
+#include "ttsubpix.c"
#endif
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
diff --git a/freetype/src/truetype/ttdriver.c b/freetype/src/truetype/ttdriver.c
index 9cecfb388..0e4addf3b 100644
--- a/freetype/src/truetype/ttdriver.c
+++ b/freetype/src/truetype/ttdriver.c
@@ -353,13 +353,13 @@
/*************************************************************************/
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
- FT_DEFINE_SERVICE_MULTIMASTERSREC(tt_service_gx_multi_masters,
+ FT_DEFINE_SERVICE_MULTIMASTERSREC(
+ tt_service_gx_multi_masters,
(FT_Get_MM_Func) NULL,
(FT_Set_MM_Design_Func) NULL,
(FT_Set_MM_Blend_Func) TT_Set_MM_Blend,
(FT_Get_MM_Var_Func) TT_Get_MM_Var,
- (FT_Set_Var_Design_Func)TT_Set_Var_Design
- )
+ (FT_Set_Var_Design_Func)TT_Set_Var_Design )
#endif
static const FT_Service_TrueTypeEngineRec tt_service_truetype_engine =
@@ -379,25 +379,26 @@
#endif /* TT_USE_BYTECODE_INTERPRETER */
};
- FT_DEFINE_SERVICE_TTGLYFREC(tt_service_truetype_glyf,
- (TT_Glyf_GetLocationFunc)tt_face_get_location
- )
+ FT_DEFINE_SERVICE_TTGLYFREC(
+ tt_service_truetype_glyf,
+ (TT_Glyf_GetLocationFunc)tt_face_get_location )
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
- FT_DEFINE_SERVICEDESCREC4(tt_services,
+ FT_DEFINE_SERVICEDESCREC4(
+ tt_services,
FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_TRUETYPE,
- FT_SERVICE_ID_MULTI_MASTERS, &FT_TT_SERVICE_GX_MULTI_MASTERS_GET,
+ FT_SERVICE_ID_MULTI_MASTERS, &TT_SERVICE_GX_MULTI_MASTERS_GET,
FT_SERVICE_ID_TRUETYPE_ENGINE, &tt_service_truetype_engine,
- FT_SERVICE_ID_TT_GLYF, &FT_TT_SERVICE_TRUETYPE_GLYF_GET
- )
+ FT_SERVICE_ID_TT_GLYF, &TT_SERVICE_TRUETYPE_GLYF_GET )
#else
- FT_DEFINE_SERVICEDESCREC3(tt_services,
+ FT_DEFINE_SERVICEDESCREC3(
+ tt_services,
FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_TRUETYPE,
FT_SERVICE_ID_TRUETYPE_ENGINE, &tt_service_truetype_engine,
- FT_SERVICE_ID_TT_GLYF, &FT_TT_SERVICE_TRUETYPE_GLYF_GET
- )
+ FT_SERVICE_ID_TT_GLYF, &TT_SERVICE_TRUETYPE_GLYF_GET )
#endif
+
FT_CALLBACK_DEF( FT_Module_Interface )
tt_get_interface( FT_Module driver, /* TT_Driver */
const char* tt_interface )
@@ -408,7 +409,7 @@
SFNT_Service sfnt;
- /* FT_TT_SERVICES_GET derefers `library' in PIC mode */
+ /* TT_SERVICES_GET derefers `library' in PIC mode */
#ifdef FT_CONFIG_OPTION_PIC
if ( !driver )
return NULL;
@@ -417,7 +418,7 @@
return NULL;
#endif
- result = ft_service_list_lookup( FT_TT_SERVICES_GET, tt_interface );
+ result = ft_service_list_lookup( TT_SERVICES_GET, tt_interface );
if ( result != NULL )
return result;
@@ -445,15 +446,15 @@
/* The FT_DriverInterface structure is defined in ftdriver.h. */
#ifdef TT_USE_BYTECODE_INTERPRETER
-#define TT_HINTER_FLAG FT_MODULE_DRIVER_HAS_HINTER
+#define TT_HINTER_FLAG FT_MODULE_DRIVER_HAS_HINTER
#else
-#define TT_HINTER_FLAG 0
+#define TT_HINTER_FLAG 0
#endif
#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
-#define TT_SIZE_SELECT tt_size_select
+#define TT_SIZE_SELECT tt_size_select
#else
-#define TT_SIZE_SELECT 0
+#define TT_SIZE_SELECT 0
#endif
FT_DEFINE_DRIVER( tt_driver_class,
diff --git a/freetype/src/truetype/ttgload.c b/freetype/src/truetype/ttgload.c
index 1e6102cc6..04a5a2933 100644
--- a/freetype/src/truetype/ttgload.c
+++ b/freetype/src/truetype/ttgload.c
@@ -32,6 +32,7 @@
#endif
#include "tterrors.h"
+#include "ttsubpix.h"
/*************************************************************************/
@@ -149,6 +150,15 @@
loader->top_bearing = top_bearing;
loader->vadvance = advance_height;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( loader->exec )
+ loader->exec->sph_tweak_flags = 0;
+
+ /* this may not be the right place for this, but it works */
+ if ( loader->exec && loader->exec->ignore_x_mode )
+ sph_set_tweaks( loader, glyph_index );
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
if ( !loader->linear_def )
{
loader->linear_def = 1;
@@ -252,10 +262,6 @@
}
-#undef IS_HINTED
-#define IS_HINTED( flags ) ( ( flags & FT_LOAD_NO_HINTING ) == 0 )
-
-
/*************************************************************************/
/* */
/* The following functions are used by default with TrueType fonts. */
@@ -813,6 +819,13 @@
loader->pp4 = zone->cur[zone->n_points - 1];
}
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( loader->exec->sph_tweak_flags & SPH_TWEAK_DEEMBOLDEN )
+ FT_Outline_EmboldenXY( &loader->gloader->current.outline, -24, 0 );
+
+ else if ( loader->exec->sph_tweak_flags & SPH_TWEAK_EMBOLDEN )
+ FT_Outline_EmboldenXY( &loader->gloader->current.outline, 24, 0 );
+#endif
return TT_Err_Ok;
}
@@ -835,6 +848,14 @@
FT_Outline* outline;
FT_Int n_points;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ TT_Face face = (TT_Face)loader->face;
+ FT_String* family = face->root.family_name;
+ FT_Int ppem = loader->size->metrics.x_ppem;
+ FT_String* style = face->root.style_name;
+ FT_Int x_scale_factor = 1000;
+#endif
+
outline = &gloader->current.outline;
n_points = outline->n_points;
@@ -889,6 +910,32 @@
loader->zone.n_points + 4 );
}
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ /* scale, but only if enabled and only if TT hinting is being used */
+ if ( IS_HINTED( loader->load_flags ) )
+ x_scale_factor = scale_test_tweak( face, family, ppem, style,
+ loader->glyph_index, X_SCALING_Rules,
+ X_SCALING_RULES_SIZE );
+ /* scale the glyph */
+ if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 ||
+ x_scale_factor != 1000 )
+ {
+ FT_Vector* vec = outline->points;
+ FT_Vector* limit = outline->points + n_points;
+ FT_Fixed x_scale = FT_MulDiv(
+ ((TT_Size)loader->size)->metrics.x_scale,
+ x_scale_factor, 1000 );
+ FT_Fixed y_scale = ((TT_Size)loader->size)->metrics.y_scale;
+
+
+ /* compensate for any scaling by de/emboldening; */
+ /* the amount was determined via experimentation */
+ if ( x_scale_factor != 1000 && ppem > 11 )
+ FT_Outline_EmboldenXY( outline,
+ FT_MulFix( 1280 * ppem,
+ 1000 - x_scale_factor ),
+ 0 );
+#else
/* scale the glyph */
if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 )
{
@@ -896,6 +943,7 @@
FT_Vector* limit = outline->points + n_points;
FT_Fixed x_scale = ((TT_Size)loader->size)->metrics.x_scale;
FT_Fixed y_scale = ((TT_Size)loader->size)->metrics.y_scale;
+#endif /* !TT_CONFIG_OPTION_SUBPIXEL_HINTING */
for ( ; vec < limit; vec++ )
@@ -1648,12 +1696,26 @@
{
FT_Byte* widthp;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ FT_Bool ignore_x_mode;
+
+
+ ignore_x_mode = FT_BOOL( FT_LOAD_TARGET_MODE( loader->load_flags ) !=
+ FT_RENDER_MODE_MONO );
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
widthp = tt_face_get_device_metrics( face,
size->root.metrics.x_ppem,
glyph_index );
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( widthp &&
+ ( ( ignore_x_mode && loader->exec->compatible_widths ) ||
+ !ignore_x_mode ||
+ SPH_OPTION_BITMAP_WIDTHS ) )
+#else
if ( widthp )
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
glyph->metrics.horiAdvance = *widthp << 6;
}
@@ -1833,7 +1895,9 @@
{
TT_Face face;
FT_Stream stream;
+#ifdef TT_USE_BYTECODE_INTERPRETER
FT_Bool pedantic = FT_BOOL( load_flags & FT_LOAD_PEDANTIC );
+#endif
face = (TT_Face)glyph->face;
@@ -1848,6 +1912,16 @@
{
TT_ExecContext exec;
FT_Bool grayscale;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ FT_Bool subpixel_hinting;
+ FT_Bool grayscale_hinting;
+#if 0
+ FT_Bool compatible_widths;
+ FT_Bool symmetrical_smoothing;
+ FT_Bool bgr;
+ FT_Bool subpixel_positioned;
+#endif
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
if ( !size->cvt_ready )
@@ -1865,11 +1939,90 @@
if ( !exec )
return TT_Err_Could_Not_Find_Context;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+
+ subpixel_hinting = FT_BOOL( ( FT_LOAD_TARGET_MODE( load_flags )
+ != FT_RENDER_MODE_MONO ) &&
+ SPH_OPTION_SET_SUBPIXEL );
+
+ if ( subpixel_hinting )
+ grayscale = grayscale_hinting = FALSE;
+
+ else if ( SPH_OPTION_SET_GRAYSCALE )
+ {
+ grayscale = grayscale_hinting = TRUE;
+ subpixel_hinting = FALSE;
+ }
+
+ if ( FT_IS_TRICKY( glyph->face ) )
+ subpixel_hinting = grayscale_hinting = FALSE;
+
+ exec->ignore_x_mode = subpixel_hinting || grayscale_hinting;
+ exec->rasterizer_version = SPH_OPTION_SET_RASTERIZER_VERSION;
+ if ( exec->sph_tweak_flags & SPH_TWEAK_RASTERIZER_35 )
+ exec->rasterizer_version = 35;
+
+#if 1
+ exec->compatible_widths = SPH_OPTION_SET_COMPATIBLE_WIDTHS;
+ exec->symmetrical_smoothing = FALSE;
+ exec->bgr = FALSE;
+ exec->subpixel_positioned = TRUE;
+#else /* 0 */
+ exec->compatible_widths =
+ FT_BOOL( FT_LOAD_TARGET_MODE( load_flags ) !=
+ TT_LOAD_COMPATIBLE_WIDTHS );
+ exec->symmetrical_smoothing =
+ FT_BOOL( FT_LOAD_TARGET_MODE( load_flags ) !=
+ TT_LOAD_SYMMETRICAL_SMOOTHING );
+ exec->bgr =
+ FT_BOOL( FT_LOAD_TARGET_MODE( load_flags ) !=
+ TT_LOAD_BGR );
+ exec->subpixel_positioned =
+ FT_BOOL( FT_LOAD_TARGET_MODE( load_flags ) !=
+ TT_LOAD_SUBPIXEL_POSITIONED );
+#endif /* 0 */
+
+#else /* !TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
grayscale =
FT_BOOL( FT_LOAD_TARGET_MODE( load_flags ) != FT_RENDER_MODE_MONO );
+#endif /* !TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
TT_Load_Context( exec, face, size );
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+
+ /* a change from mono to subpixel rendering (and vice versa) */
+ /* requires a re-execution of the CVT program */
+ if ( subpixel_hinting != exec->subpixel_hinting )
+ {
+ FT_UInt i;
+
+
+ exec->subpixel_hinting = subpixel_hinting;
+
+ for ( i = 0; i < size->cvt_size; i++ )
+ size->cvt[i] = FT_MulFix( face->cvt[i], size->ttmetrics.scale );
+ tt_size_run_prep( size, pedantic );
+ }
+
+ /* a change from mono to grayscale rendering (and vice versa) */
+ /* requires a re-execution of the CVT program */
+ if ( grayscale != exec->grayscale_hinting )
+ {
+ FT_UInt i;
+
+
+ exec->grayscale_hinting = grayscale_hinting;
+
+ for ( i = 0; i < size->cvt_size; i++ )
+ size->cvt[i] = FT_MulFix( face->cvt[i], size->ttmetrics.scale );
+ tt_size_run_prep( size, pedantic );
+ }
+
+#else /* !TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
/* a change from mono to grayscale rendering (and vice versa) */
/* requires a re-execution of the CVT program */
if ( grayscale != exec->grayscale )
@@ -1887,6 +2040,8 @@
tt_size_run_prep( size, pedantic );
}
+#endif /* !TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
/* see whether the cvt program has disabled hinting */
if ( exec->GS.instruct_control & 1 )
load_flags |= FT_LOAD_NO_HINTING;
diff --git a/freetype/src/truetype/ttgxvar.c b/freetype/src/truetype/ttgxvar.c
index f0a4973ee..975a00a24 100644
--- a/freetype/src/truetype/ttgxvar.c
+++ b/freetype/src/truetype/ttgxvar.c
@@ -4,7 +4,7 @@
/* */
/* TrueType GX Font Variation loader */
/* */
-/* Copyright 2004-2011 by */
+/* Copyright 2004-2012 by */
/* David Turner, Robert Wilhelm, Werner Lemberg, and George Williams. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -91,7 +91,7 @@
/* indicates that there is a delta for every point without needing to */
/* enumerate all of them. */
/* */
-#define ALL_POINTS (FT_UShort*)( -1 )
+#define ALL_POINTS (FT_UShort*)( ~0 )
#define GX_PT_POINTS_ARE_WORDS 0x80
@@ -501,11 +501,9 @@
FT_Fixed* im_end_coords )
{
FT_UInt i;
- FT_Fixed apply;
- FT_Fixed temp;
+ FT_Fixed apply = 0x10000L;
- apply = 0x10000L;
for ( i = 0; i < blend->num_axis; ++i )
{
if ( tuple_coords[i] == 0 )
@@ -525,11 +523,10 @@
else if ( !( tupleIndex & GX_TI_INTERMEDIATE_TUPLE ) )
/* not an intermediate tuple */
- apply = FT_MulDiv( apply,
+ apply = FT_MulFix( apply,
blend->normalizedcoords[i] > 0
? blend->normalizedcoords[i]
- : -blend->normalizedcoords[i],
- 0x10000L );
+ : -blend->normalizedcoords[i] );
else if ( blend->normalizedcoords[i] <= im_start_coords[i] ||
blend->normalizedcoords[i] >= im_end_coords[i] )
@@ -539,20 +536,14 @@
}
else if ( blend->normalizedcoords[i] < tuple_coords[i] )
- {
- temp = FT_MulDiv( blend->normalizedcoords[i] - im_start_coords[i],
- 0x10000L,
- tuple_coords[i] - im_start_coords[i]);
- apply = FT_MulDiv( apply, temp, 0x10000L );
- }
+ apply = FT_MulDiv( apply,
+ blend->normalizedcoords[i] - im_start_coords[i],
+ tuple_coords[i] - im_start_coords[i] );
else
- {
- temp = FT_MulDiv( im_end_coords[i] - blend->normalizedcoords[i],
- 0x10000L,
- im_end_coords[i] - tuple_coords[i] );
- apply = FT_MulDiv( apply, temp, 0x10000L );
- }
+ apply = FT_MulDiv( apply,
+ im_end_coords[i] - blend->normalizedcoords[i],
+ im_end_coords[i] - tuple_coords[i] );
}
return apply;
@@ -712,7 +703,7 @@
mmvar->num_axis =
fvar_head.axisCount;
mmvar->num_designs =
- (FT_UInt)-1; /* meaningless in this context; each glyph */
+ ~0; /* meaningless in this context; each glyph */
/* may have a different number of designs */
/* (or tuples, as called by Apple) */
mmvar->num_namedstyles =
@@ -1034,19 +1025,11 @@
}
if ( coords[i] < a->def )
- {
- normalized[i] = -FT_MulDiv( coords[i] - a->def,
- 0x10000L,
- a->minimum - a->def );
- }
+ normalized[i] = -FT_DivFix( coords[i] - a->def, a->minimum - a->def );
else if ( a->maximum == a->def )
normalized[i] = 0;
else
- {
- normalized[i] = FT_MulDiv( coords[i] - a->def,
- 0x10000L,
- a->maximum - a->def );
- }
+ normalized[i] = FT_DivFix( coords[i] - a->def, a->maximum - a->def );
}
if ( !blend->avar_checked )
@@ -1061,15 +1044,11 @@
if ( normalized[i] < av->correspondence[j].fromCoord )
{
normalized[i] =
- FT_MulDiv(
- FT_MulDiv(
- normalized[i] - av->correspondence[j - 1].fromCoord,
- 0x10000L,
- av->correspondence[j].fromCoord -
- av->correspondence[j - 1].fromCoord ),
- av->correspondence[j].toCoord -
- av->correspondence[j - 1].toCoord,
- 0x10000L ) +
+ FT_MulDiv( normalized[i] - av->correspondence[j - 1].fromCoord,
+ av->correspondence[j].toCoord -
+ av->correspondence[j - 1].toCoord,
+ av->correspondence[j].fromCoord -
+ av->correspondence[j - 1].fromCoord ) +
av->correspondence[j - 1].toCoord;
break;
}
diff --git a/freetype/src/truetype/ttinterp.c b/freetype/src/truetype/ttinterp.c
index 68969a9f4..1fc38905b 100644
--- a/freetype/src/truetype/ttinterp.c
+++ b/freetype/src/truetype/ttinterp.c
@@ -27,16 +27,15 @@
#include FT_SYSTEM_H
#include "ttinterp.h"
-
#include "tterrors.h"
+#include "ttsubpix.h"
#ifdef TT_USE_BYTECODE_INTERPRETER
-#define TT_MULFIX FT_MulFix
-#define TT_MULDIV FT_MulDiv
-#define TT_MULDIV_NO_ROUND FT_MulDiv_No_Round
+#define xxxSPH_DEBUG
+#define xxxSPH_DEBUG_MORE_VERBOSE
/*************************************************************************/
@@ -232,6 +231,14 @@
#define BOUNDS( x, n ) ( (FT_UInt)(x) >= (FT_UInt)(n) )
#define BOUNDSL( x, n ) ( (FT_ULong)(x) >= (FT_ULong)(n) )
+ /*************************************************************************/
+ /* */
+ /* This macro computes (a*2^14)/b and complements TT_MulFix14. */
+ /* */
+#define TT_DivFix14( a, b ) \
+ FT_DivFix( a, (b) << 2 )
+
+
#undef SUCCESS
#define SUCCESS 0
@@ -1661,13 +1668,13 @@
else
{
- FT_Long x, y;
+ FT_F26Dot6 x, y;
- x = TT_MULDIV( CUR.GS.projVector.x,
- CUR.tt_metrics.x_ratio, 0x4000 );
- y = TT_MULDIV( CUR.GS.projVector.y,
- CUR.tt_metrics.y_ratio, 0x4000 );
+ x = TT_MulFix14( CUR.tt_metrics.x_ratio,
+ CUR.GS.projVector.x );
+ y = TT_MulFix14( CUR.tt_metrics.y_ratio,
+ CUR.GS.projVector.y );
CUR.tt_metrics.ratio = TT_VecLen( x, y );
}
}
@@ -1679,7 +1686,7 @@
static FT_Long
Current_Ppem( EXEC_OP )
{
- return TT_MULFIX( CUR.tt_metrics.ppem, CURRENT_Ratio() );
+ return FT_MulFix( CUR.tt_metrics.ppem, CURRENT_Ratio() );
}
@@ -1700,7 +1707,7 @@
FT_CALLBACK_DEF( FT_F26Dot6 )
Read_CVT_Stretched( EXEC_OP_ FT_ULong idx )
{
- return TT_MULFIX( CUR.cvt[idx], CURRENT_Ratio() );
+ return FT_MulFix( CUR.cvt[idx], CURRENT_Ratio() );
}
@@ -1850,9 +1857,11 @@
if ( v != 0 )
{
- zone->cur[point].x += TT_MULDIV( distance,
- v * 0x10000L,
- CUR.F_dot_P );
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( !CUR.ignore_x_mode ||
+ ( CUR.sph_tweak_flags & SPH_TWEAK_ALLOW_X_DMOVE ) )
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+ zone->cur[point].x += FT_MulDiv( distance, v, CUR.F_dot_P );
zone->tags[point] |= FT_CURVE_TAG_TOUCH_X;
}
@@ -1861,9 +1870,7 @@
if ( v != 0 )
{
- zone->cur[point].y += TT_MULDIV( distance,
- v * 0x10000L,
- CUR.F_dot_P );
+ zone->cur[point].y += FT_MulDiv( distance, v, CUR.F_dot_P );
zone->tags[point] |= FT_CURVE_TAG_TOUCH_Y;
}
@@ -1902,16 +1909,12 @@
v = CUR.GS.freeVector.x;
if ( v != 0 )
- zone->org[point].x += TT_MULDIV( distance,
- v * 0x10000L,
- CUR.F_dot_P );
+ zone->org[point].x += FT_MulDiv( distance, v, CUR.F_dot_P );
v = CUR.GS.freeVector.y;
if ( v != 0 )
- zone->org[point].y += TT_MULDIV( distance,
- v * 0x10000L,
- CUR.F_dot_P );
+ zone->org[point].y += FT_MulDiv( distance, v, CUR.F_dot_P );
}
@@ -1932,6 +1935,10 @@
{
FT_UNUSED_EXEC;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( !CUR.ignore_x_mode ||
+ ( CUR.sph_tweak_flags & SPH_TWEAK_ALLOW_X_DMOVEX ) )
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
zone->cur[point].x += distance;
zone->tags[point] |= FT_CURVE_TAG_TOUCH_X;
}
@@ -2193,7 +2200,7 @@
}
else
{
- val = - FT_PIX_CEIL( compensation - distance );
+ val = -FT_PIX_CEIL( compensation - distance );
if ( val > 0 )
val = 0;
}
@@ -2404,8 +2411,9 @@
/* Sets Super Round parameters. */
/* */
/* <Input> */
- /* GridPeriod :: Grid period */
- /* selector :: SROUND opcode */
+ /* GridPeriod :: The grid period. */
+ /* */
+ /* selector :: The SROUND opcode. */
/* */
static void
SetSuperRound( EXEC_OP_ FT_F26Dot6 GridPeriod,
@@ -2617,13 +2625,10 @@
if ( CUR.GS.dualVector.x == 0x4000 )
CUR.func_dualproj = Project_x;
+ else if ( CUR.GS.dualVector.y == 0x4000 )
+ CUR.func_dualproj = Project_y;
else
- {
- if ( CUR.GS.dualVector.y == 0x4000 )
- CUR.func_dualproj = Project_y;
- else
- CUR.func_dualproj = Dual_Project;
- }
+ CUR.func_dualproj = Dual_Project;
/* Force recalculation of cached aspect ratio */
CUR.tt_metrics.ratio = 0;
@@ -2633,61 +2638,50 @@
#endif /* TT_CONFIG_OPTION_UNPATENTED_HINTING */
if ( CUR.GS.freeVector.x == 0x4000 )
- CUR.F_dot_P = CUR.GS.projVector.x * 0x10000L;
+ CUR.F_dot_P = CUR.GS.projVector.x;
+ else if ( CUR.GS.freeVector.y == 0x4000 )
+ CUR.F_dot_P = CUR.GS.projVector.y;
else
- {
- if ( CUR.GS.freeVector.y == 0x4000 )
- CUR.F_dot_P = CUR.GS.projVector.y * 0x10000L;
- else
- CUR.F_dot_P = (FT_Long)CUR.GS.projVector.x * CUR.GS.freeVector.x * 4 +
- (FT_Long)CUR.GS.projVector.y * CUR.GS.freeVector.y * 4;
- }
+ CUR.F_dot_P = ( (FT_Long)CUR.GS.projVector.x * CUR.GS.freeVector.x +
+ (FT_Long)CUR.GS.projVector.y * CUR.GS.freeVector.y ) >>
+ 14;
if ( CUR.GS.projVector.x == 0x4000 )
CUR.func_project = (TT_Project_Func)Project_x;
+ else if ( CUR.GS.projVector.y == 0x4000 )
+ CUR.func_project = (TT_Project_Func)Project_y;
else
- {
- if ( CUR.GS.projVector.y == 0x4000 )
- CUR.func_project = (TT_Project_Func)Project_y;
- else
- CUR.func_project = (TT_Project_Func)Project;
- }
+ CUR.func_project = (TT_Project_Func)Project;
if ( CUR.GS.dualVector.x == 0x4000 )
CUR.func_dualproj = (TT_Project_Func)Project_x;
+ else if ( CUR.GS.dualVector.y == 0x4000 )
+ CUR.func_dualproj = (TT_Project_Func)Project_y;
else
- {
- if ( CUR.GS.dualVector.y == 0x4000 )
- CUR.func_dualproj = (TT_Project_Func)Project_y;
- else
- CUR.func_dualproj = (TT_Project_Func)Dual_Project;
- }
+ CUR.func_dualproj = (TT_Project_Func)Dual_Project;
CUR.func_move = (TT_Move_Func)Direct_Move;
CUR.func_move_orig = (TT_Move_Func)Direct_Move_Orig;
- if ( CUR.F_dot_P == 0x40000000L )
+ if ( CUR.F_dot_P == 0x4000L )
{
if ( CUR.GS.freeVector.x == 0x4000 )
{
CUR.func_move = (TT_Move_Func)Direct_Move_X;
CUR.func_move_orig = (TT_Move_Func)Direct_Move_Orig_X;
}
- else
+ else if ( CUR.GS.freeVector.y == 0x4000 )
{
- if ( CUR.GS.freeVector.y == 0x4000 )
- {
- CUR.func_move = (TT_Move_Func)Direct_Move_Y;
- CUR.func_move_orig = (TT_Move_Func)Direct_Move_Orig_Y;
- }
+ CUR.func_move = (TT_Move_Func)Direct_Move_Y;
+ CUR.func_move_orig = (TT_Move_Func)Direct_Move_Orig_Y;
}
}
/* at small sizes, F_dot_P can become too small, resulting */
/* in overflows and `spikes' in a number of glyphs like `w'. */
- if ( FT_ABS( CUR.F_dot_P ) < 0x4000000L )
- CUR.F_dot_P = 0x40000000L;
+ if ( FT_ABS( CUR.F_dot_P ) < 0x400L )
+ CUR.F_dot_P = 0x4000L;
/* Disable cached aspect ratio */
CUR.tt_metrics.ratio = 0;
@@ -2743,16 +2737,16 @@
return SUCCESS;
}
- R->x = (FT_F2Dot14)FT_MulDiv( Vx, 0x4000L, W );
- R->y = (FT_F2Dot14)FT_MulDiv( Vy, 0x4000L, W );
+ R->x = (FT_F2Dot14)TT_DivFix14( Vx, W );
+ R->y = (FT_F2Dot14)TT_DivFix14( Vy, W );
return SUCCESS;
}
W = TT_VecLen( Vx, Vy );
- Vx = FT_MulDiv( Vx, 0x4000L, W );
- Vy = FT_MulDiv( Vy, 0x4000L, W );
+ Vx = TT_DivFix14( Vx, W );
+ Vy = TT_DivFix14( Vy, W );
W = Vx * Vx + Vy * Vy;
@@ -3111,7 +3105,7 @@
#define DO_SSW \
- CUR.GS.single_width_value = TT_MULFIX( args[0], \
+ CUR.GS.single_width_value = FT_MulFix( args[0], \
CUR.tt_metrics.scale );
@@ -3289,11 +3283,11 @@
if ( args[1] == 0 ) \
CUR.error = TT_Err_Divide_By_Zero; \
else \
- args[0] = TT_MULDIV_NO_ROUND( args[0], 64L, args[1] );
+ args[0] = FT_MulDiv_No_Round( args[0], 64L, args[1] );
#define DO_MUL \
- args[0] = TT_MULDIV( args[0], args[1], 64L );
+ args[0] = FT_MulDiv( args[0], args[1], 64L );
#define DO_ABS \
@@ -3311,6 +3305,34 @@
#define DO_CEILING \
args[0] = FT_PIX_CEIL( args[0] );
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+
+#define DO_RS \
+ { \
+ FT_ULong I = (FT_ULong)args[0]; \
+ \
+ \
+ if ( BOUNDSL( I, CUR.storeSize ) ) \
+ { \
+ if ( CUR.pedantic_hinting ) \
+ ARRAY_BOUND_ERROR; \
+ else \
+ args[0] = 0; \
+ } \
+ else \
+ { \
+ /* subpixel hinting - avoid Typeman Dstroke and */ \
+ /* IStroke and Vacuform rounds */ \
+ \
+ if ( CUR.compatibility_mode && \
+ ( I == 24 || I == 22 || I == 8 ) ) \
+ args[0] = 0; \
+ else \
+ args[0] = CUR.storage[I]; \
+ } \
+ }
+
+#else /* !TT_CONFIG_OPTION_SUBPIXEL_HINTING */
#define DO_RS \
{ \
@@ -3330,6 +3352,8 @@
args[0] = CUR.storage[I]; \
}
+#endif /* !TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
#define DO_WS \
{ \
@@ -3397,7 +3421,7 @@
} \
} \
else \
- CUR.cvt[I] = TT_MULFIX( args[1], CUR.tt_metrics.scale ); \
+ CUR.cvt[I] = FT_MulFix( args[1], CUR.tt_metrics.scale ); \
}
@@ -4587,6 +4611,27 @@
TT_DefRecord* rec;
TT_DefRecord* limit;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ /* arguments to opcodes are skipped by `SKIP_Code' */
+ FT_Byte opcode_pattern[1][12] = {
+ /* #0 TTFautohint bytecode (old) */
+ {
+ 0x20, /* DUP */
+ 0x64, /* ABS */
+ 0xB0, /* PUSHB_1 */
+ /* 32 */
+ 0x60, /* ADD */
+ 0x66, /* FLOOR */
+ 0x23, /* SWAP */
+ 0xB0 /* PUSHB_1 */
+ },
+ };
+ FT_UShort opcode_patterns = 1;
+ FT_UShort opcode_pointer[1] = { 0, };
+ FT_UShort opcode_size[1] = { 7, };
+ FT_UShort i;
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
/* some font programs are broken enough to redefine functions! */
/* We will then parse the current table. */
@@ -4620,10 +4665,11 @@
return;
}
- rec->range = CUR.curRange;
- rec->opc = (FT_UInt16)n;
- rec->start = CUR.IP + 1;
- rec->active = TRUE;
+ rec->range = CUR.curRange;
+ rec->opc = (FT_UInt16)n;
+ rec->start = CUR.IP + 1;
+ rec->active = TRUE;
+ rec->inline_delta = FALSE;
if ( n > CUR.maxFunc )
CUR.maxFunc = (FT_UInt16)n;
@@ -4633,6 +4679,46 @@
while ( SKIP_Code() == SUCCESS )
{
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+
+#ifdef SPH_DEBUG_MORE_VERBOSE
+ printf ( "Opcode: %d ", CUR.opcode );
+#endif
+
+ for ( i = 0; i < opcode_patterns; i++ )
+ {
+ if ( opcode_pointer[i] < opcode_size[i] &&
+ CUR.opcode == opcode_pattern[i][opcode_pointer[i]] )
+ {
+#ifdef SPH_DEBUG_MORE_VERBOSE
+ printf( "function %d, opcode ptrn: %d"
+ " op# %d: %d FOUND \n",
+ n, i, opcode_pointer[i], CUR.opcode );
+#endif
+ opcode_pointer[i] += 1;
+
+ if ( opcode_pointer[i] == opcode_size[i] )
+ {
+#ifdef SPH_DEBUG
+ printf( "Function signature %d detected in FDEF %d\n", i, n);
+#endif
+
+ switch ( i )
+ {
+ case 0:
+ CUR.size->ttfautohinted = TRUE;
+ break;
+ }
+ opcode_pointer[i] = 0;
+ }
+ }
+
+ else
+ opcode_pointer[i] = 0;
+ }
+
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
switch ( CUR.opcode )
{
case 0x89: /* IDEF */
@@ -4676,6 +4762,15 @@
CUR.step_ins = FALSE;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ /*
+ * CUR.ignore_x_mode may be turned off prior to function calls. This
+ * ensures it is turned back on.
+ */
+ CUR.ignore_x_mode = ( CUR.subpixel_hinting || CUR.grayscale_hinting ) &&
+ !( CUR.sph_tweak_flags & SPH_TWEAK_PIXEL_HINTING );
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
if ( pRec->Cur_Count > 0 )
{
CUR.callTop++;
@@ -4746,6 +4841,7 @@
if ( !def->active )
goto Fail;
+
/* check the call stack */
if ( CUR.callTop >= CUR.callSize )
{
@@ -4846,6 +4942,7 @@
CUR.step_ins = FALSE;
}
+
return;
Fail:
@@ -5179,15 +5276,15 @@
{
/* this should be faster */
D = CUR_Func_dualproj( vec1, vec2 );
- D = TT_MULFIX( D, CUR.metrics.x_scale );
+ D = FT_MulFix( D, CUR.metrics.x_scale );
}
else
{
FT_Vector vec;
- vec.x = TT_MULFIX( vec1->x - vec2->x, CUR.metrics.x_scale );
- vec.y = TT_MULFIX( vec1->y - vec2->y, CUR.metrics.y_scale );
+ vec.x = FT_MulFix( vec1->x - vec2->x, CUR.metrics.x_scale );
+ vec.y = FT_MulFix( vec1->y - vec2->y, CUR.metrics.y_scale );
D = CUR_fast_dualproj( &vec );
}
@@ -5195,6 +5292,12 @@
}
}
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ /* Disable Type 2 Vacuform Rounds - e.g. Arial Narrow */
+ if ( CUR.ignore_x_mode && FT_ABS( D ) == 64 )
+ D += 1;
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
args[0] = D;
}
@@ -5652,12 +5755,8 @@
else
#endif
{
- *x = TT_MULDIV( d,
- (FT_Long)CUR.GS.freeVector.x * 0x10000L,
- CUR.F_dot_P );
- *y = TT_MULDIV( d,
- (FT_Long)CUR.GS.freeVector.y * 0x10000L,
- CUR.F_dot_P );
+ *x = FT_MulDiv( d, (FT_Long)CUR.GS.freeVector.x, CUR.F_dot_P );
+ *y = FT_MulDiv( d, (FT_Long)CUR.GS.freeVector.y, CUR.F_dot_P );
}
return SUCCESS;
@@ -5691,7 +5790,12 @@
if ( CUR.GS.freeVector.x != 0 )
{
- CUR.zp2.cur[point].x += dx;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( !CUR.ignore_x_mode ||
+ ( CUR.ignore_x_mode &&
+ ( CUR.sph_tweak_flags & SPH_TWEAK_ALLOW_X_MOVE_ZP2 ) ) )
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+ CUR.zp2.cur[point].x += dx;
if ( touch )
CUR.zp2.tags[point] |= FT_CURVE_TAG_TOUCH_X;
}
@@ -5872,6 +5976,9 @@
{
FT_F26Dot6 dx, dy;
FT_UShort point;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ FT_Int B1, B2;
+#endif
if ( CUR.top < CUR.GS.loop + 1 )
@@ -5886,13 +5993,13 @@
{
if ( CUR.GS.both_x_axis )
{
- dx = TT_MulFix14( (FT_UInt32)args[0], 0x4000 );
+ dx = (FT_UInt32)args[0];
dy = 0;
}
else
{
dx = 0;
- dy = TT_MulFix14( (FT_UInt32)args[0], 0x4000 );
+ dy = (FT_UInt32)args[0];
}
}
else
@@ -5917,7 +6024,80 @@
}
}
else
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ {
+ /* If not using ignore_x_mode rendering, allow ZP2 move. */
+ /* If inline deltas aren't allowed, skip ZP2 move. */
+ /* If using ignore_x_mode rendering, allow ZP2 point move if: */
+ /* - freedom vector is y and compatibility_mode is off */
+ /* - the glyph is composite and the move is in the Y direction */
+ /* - the glyph is specifically set to allow SHPIX moves */
+ /* - the move is on a previously Y-touched point */
+
+ if ( CUR.ignore_x_mode )
+ {
+ /* save point for later comparison */
+ if ( CUR.GS.freeVector.y != 0 )
+ B1 = CUR.zp2.cur[point].y;
+ else
+ B1 = CUR.zp2.cur[point].x;
+
+ if ( CUR.GS.freeVector.y != 0 &&
+ ( CUR.sph_tweak_flags & SPH_TWEAK_SKIP_INLINE_DELTAS ) )
+ goto Skip;
+
+ if ( CUR.ignore_x_mode &&
+ !CUR.compatibility_mode && CUR.GS.freeVector.y != 0 )
+ MOVE_Zp2_Point( point, dx, dy, TRUE );
+
+ else if ( CUR.ignore_x_mode && CUR.compatibility_mode )
+ {
+ if ( CUR.ignore_x_mode &&
+ ( CUR.sph_tweak_flags & SPH_TWEAK_ROUND_NONPIXEL_Y_MOVES ) )
+ {
+ dx = FT_PIX_ROUND( B1 + dx ) - B1;
+ dy = FT_PIX_ROUND( B1 + dy ) - B1;
+ }
+
+ if ( !( CUR.sph_tweak_flags & SPH_TWEAK_ALWAYS_SKIP_DELTAP ) &&
+ ( ( CUR.is_composite && CUR.GS.freeVector.y != 0 ) ||
+ ( CUR.zp2.tags[point] & FT_CURVE_TAG_TOUCH_Y ) ||
+ ( CUR.sph_tweak_flags & SPH_TWEAK_DO_SHPIX ) ) )
+ MOVE_Zp2_Point( point, dx, dy, TRUE );
+ }
+
+ /* save new point */
+ if ( CUR.GS.freeVector.y != 0 )
+ B2 = CUR.zp2.cur[point].y;
+ else
+ B2 = CUR.zp2.cur[point].x;
+
+ /* reverse any disallowed moves */
+ if ( ( ( CUR.sph_tweak_flags & SPH_TWEAK_SKIP_NONPIXEL_Y_MOVES ) &&
+ CUR.GS.freeVector.y != 0 &&
+ B1 % 64 != 0 &&
+ B2 % 64 != 0 &&
+ B1 != B2 ) ||
+ ( ( CUR.sph_tweak_flags & SPH_TWEAK_SKIP_OFFPIXEL_Y_MOVES ) &&
+ CUR.GS.freeVector.y != 0 &&
+ B1 % 64 == 0 &&
+ B2 % 64 != 0 &&
+ B1 != B2 &&
+ !CUR.size->ttfautohinted ) )
+ {
+#ifdef SPH_DEBUG
+ printf( "Reversing ZP2 move\n" );
+#endif
+ MOVE_Zp2_Point( point, -dx, -dy, TRUE );
+ }
+ }
+ else
+ MOVE_Zp2_Point( point, dx, dy, TRUE );
+ }
+ Skip:
+#else
MOVE_Zp2_Point( point, dx, dy, TRUE );
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
CUR.GS.loop--;
}
@@ -5939,7 +6119,17 @@
{
FT_UShort point;
FT_F26Dot6 distance;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ FT_F26Dot6 control_value_cutin;
+
+
+ control_value_cutin = CUR.GS.control_value_cutin;
+ if ( CUR.ignore_x_mode &&
+ CUR.GS.freeVector.x != 0 &&
+ !( CUR.sph_tweak_flags & SPH_TWEAK_NORMAL_ROUND ) )
+ control_value_cutin = 0;
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
point = (FT_UShort)args[0];
@@ -5963,6 +6153,14 @@
distance = CUR_Func_project( CUR.zp1.cur + point,
CUR.zp0.cur + CUR.GS.rp0 );
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ /* subpixel hinting - make MSIRP respect CVT cut-in; */
+ if ( CUR.ignore_x_mode &&
+ CUR.GS.freeVector.x != 0 &&
+ FT_ABS( distance - args[1] ) >= control_value_cutin )
+ distance = args[1];
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
CUR_Func_move( &CUR.zp1, point, args[1] - distance );
CUR.GS.rp1 = CUR.GS.rp0;
@@ -5983,8 +6181,8 @@
Ins_MDAP( INS_ARG )
{
FT_UShort point;
- FT_F26Dot6 cur_dist,
- distance;
+ FT_F26Dot6 cur_dist;
+ FT_F26Dot6 distance;
point = (FT_UShort)args[0];
@@ -5999,8 +6197,17 @@
if ( ( CUR.opcode & 1 ) != 0 )
{
cur_dist = CUR_fast_project( &CUR.zp0.cur[point] );
- distance = CUR_Func_round( cur_dist,
- CUR.tt_metrics.compensations[0] ) - cur_dist;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( CUR.ignore_x_mode &&
+ CUR.GS.freeVector.x != 0 )
+ distance = ROUND_None(
+ cur_dist,
+ CUR.tt_metrics.compensations[0] ) - cur_dist;
+ else
+#endif
+ distance = CUR_Func_round(
+ cur_dist,
+ CUR.tt_metrics.compensations[0] ) - cur_dist;
}
else
distance = 0;
@@ -6023,12 +6230,21 @@
{
FT_ULong cvtEntry;
FT_UShort point;
- FT_F26Dot6 distance,
- org_dist;
+ FT_F26Dot6 distance;
+ FT_F26Dot6 org_dist;
+ FT_F26Dot6 control_value_cutin;
+
+ control_value_cutin = CUR.GS.control_value_cutin;
+ cvtEntry = (FT_ULong)args[1];
+ point = (FT_UShort)args[0];
- cvtEntry = (FT_ULong)args[1];
- point = (FT_UShort)args[0];
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( CUR.ignore_x_mode &&
+ CUR.GS.freeVector.x != 0 &&
+ !( CUR.sph_tweak_flags & SPH_TWEAK_NORMAL_ROUND ) )
+ control_value_cutin = 0;
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
if ( BOUNDS( point, CUR.zp0.n_points ) ||
BOUNDSL( cvtEntry, CUR.cvtSize ) )
@@ -6062,21 +6278,39 @@
if ( CUR.GS.gep0 == 0 ) /* If in twilight zone */
{
- CUR.zp0.org[point].x = TT_MulFix14( (FT_UInt32)distance,
- CUR.GS.freeVector.x );
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ /* only adjust legacy fonts x otherwise breaks Calibri italic */
+ if ( CUR.compatibility_mode )
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+ CUR.zp0.org[point].x = TT_MulFix14( (FT_UInt32)distance,
+ CUR.GS.freeVector.x );
CUR.zp0.org[point].y = TT_MulFix14( (FT_UInt32)distance,
CUR.GS.freeVector.y ),
CUR.zp0.cur[point] = CUR.zp0.org[point];
}
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( ( CUR.sph_tweak_flags & SPH_TWEAK_MIAP_HACK ) &&
+ distance > 0 &&
+ CUR.GS.freeVector.y != 0 )
+ distance = 0;
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
org_dist = CUR_fast_project( &CUR.zp0.cur[point] );
- if ( ( CUR.opcode & 1 ) != 0 ) /* rounding and control cutin flag */
+ if ( ( CUR.opcode & 1 ) != 0 ) /* rounding and control cut-in flag */
{
- if ( FT_ABS( distance - org_dist ) > CUR.GS.control_value_cutin )
+ if ( FT_ABS( distance - org_dist ) > control_value_cutin )
distance = org_dist;
- distance = CUR_Func_round( distance, CUR.tt_metrics.compensations[0] );
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( CUR.ignore_x_mode &&
+ CUR.GS.freeVector.x != 0 )
+ distance = ROUND_None( distance,
+ CUR.tt_metrics.compensations[0] );
+ else
+#endif
+ distance = CUR_Func_round( distance,
+ CUR.tt_metrics.compensations[0] );
}
CUR_Func_move( &CUR.zp0, point, distance - org_dist );
@@ -6097,7 +6331,17 @@
Ins_MDRP( INS_ARG )
{
FT_UShort point;
- FT_F26Dot6 org_dist, distance;
+ FT_F26Dot6 org_dist, distance, minimum_distance;
+
+
+ minimum_distance = CUR.GS.minimum_distance;
+
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( CUR.ignore_x_mode &&
+ CUR.GS.freeVector.x != 0 &&
+ !( CUR.sph_tweak_flags & SPH_TWEAK_NORMAL_ROUND ) )
+ minimum_distance = 0;
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
point = (FT_UShort)args[0];
@@ -6133,15 +6377,15 @@
{
/* this should be faster */
org_dist = CUR_Func_dualproj( vec1, vec2 );
- org_dist = TT_MULFIX( org_dist, CUR.metrics.x_scale );
+ org_dist = FT_MulFix( org_dist, CUR.metrics.x_scale );
}
else
{
FT_Vector vec;
- vec.x = TT_MULFIX( vec1->x - vec2->x, CUR.metrics.x_scale );
- vec.y = TT_MULFIX( vec1->y - vec2->y, CUR.metrics.y_scale );
+ vec.x = FT_MulFix( vec1->x - vec2->x, CUR.metrics.x_scale );
+ vec.y = FT_MulFix( vec1->y - vec2->y, CUR.metrics.y_scale );
org_dist = CUR_fast_dualproj( &vec );
}
@@ -6161,9 +6405,18 @@
/* round flag */
if ( ( CUR.opcode & 4 ) != 0 )
+ {
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( CUR.ignore_x_mode && CUR.GS.freeVector.x != 0 )
+ distance = ROUND_None(
+ org_dist,
+ CUR.tt_metrics.compensations[CUR.opcode & 3] );
+ else
+#endif
distance = CUR_Func_round(
org_dist,
CUR.tt_metrics.compensations[CUR.opcode & 3] );
+ }
else
distance = ROUND_None(
org_dist,
@@ -6175,13 +6428,13 @@
{
if ( org_dist >= 0 )
{
- if ( distance < CUR.GS.minimum_distance )
- distance = CUR.GS.minimum_distance;
+ if ( distance < minimum_distance )
+ distance = minimum_distance;
}
else
{
- if ( distance > -CUR.GS.minimum_distance )
- distance = -CUR.GS.minimum_distance;
+ if ( distance > -minimum_distance )
+ distance = -minimum_distance;
}
}
@@ -6216,11 +6469,27 @@
FT_F26Dot6 cvt_dist,
distance,
cur_dist,
- org_dist;
-
-
- point = (FT_UShort)args[0];
- cvtEntry = (FT_ULong)( args[1] + 1 );
+ org_dist,
+ control_value_cutin,
+ minimum_distance;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ FT_Int B1;
+ FT_Int B2;
+ FT_Bool reverse_move = FALSE;
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
+
+ minimum_distance = CUR.GS.minimum_distance;
+ control_value_cutin = CUR.GS.control_value_cutin;
+ point = (FT_UShort)args[0];
+ cvtEntry = (FT_ULong)( args[1] + 1 );
+
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( CUR.ignore_x_mode &&
+ CUR.GS.freeVector.x != 0 &&
+ !( CUR.sph_tweak_flags & SPH_TWEAK_NORMAL_ROUND ) )
+ control_value_cutin = minimum_distance = 0;
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
/* XXX: UNDOCUMENTED! cvt[-1] = 0 always */
@@ -6237,6 +6506,10 @@
cvt_dist = 0;
else
cvt_dist = CUR_Func_read_cvt( cvtEntry - 1 );
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( CUR.sph_tweak_flags & SPH_TWEAK_MIRP_CVT_ZERO )
+ cvt_dist = 0;
+#endif
/* single width test */
@@ -6274,8 +6547,17 @@
if ( ( org_dist ^ cvt_dist ) < 0 )
cvt_dist = -cvt_dist;
}
-
- /* control value cutin and round */
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( CUR.GS.freeVector.y != 0 &&
+ ( CUR.sph_tweak_flags & SPH_TWEAK_TIMES_NEW_ROMAN_HACK ) )
+ {
+ if ( cur_dist < -64 )
+ cvt_dist -= 16;
+ else if ( cur_dist > 64 && cur_dist < 84 )
+ cvt_dist += 32;
+ }
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+ /* control value cut-in and round */
if ( ( CUR.opcode & 4 ) != 0 )
{
@@ -6296,7 +6578,7 @@
/* `ttinst2.doc', version 1.66, is thus incorrect since */
/* it implies `>=' instead of `>'. */
- if ( FT_ABS( cvt_dist - org_dist ) > CUR.GS.control_value_cutin )
+ if ( FT_ABS( cvt_dist - org_dist ) > control_value_cutin )
cvt_dist = org_dist;
}
@@ -6315,18 +6597,65 @@
{
if ( org_dist >= 0 )
{
- if ( distance < CUR.GS.minimum_distance )
- distance = CUR.GS.minimum_distance;
+ if ( distance < minimum_distance )
+ distance = minimum_distance;
}
else
{
- if ( distance > -CUR.GS.minimum_distance )
- distance = -CUR.GS.minimum_distance;
+ if ( distance > -minimum_distance )
+ distance = -minimum_distance;
}
}
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ B1 = CUR.zp1.cur[point].y;
+
+ /* Round moves if necessary */
+ if ( CUR.ignore_x_mode &&
+ CUR.GS.freeVector.y != 0 &&
+ ( CUR.sph_tweak_flags & SPH_TWEAK_ROUND_NONPIXEL_Y_MOVES ) )
+ distance = FT_PIX_ROUND( B1 + distance - cur_dist ) - B1 + cur_dist;
+
+ if ( CUR.GS.freeVector.y != 0 &&
+ ( CUR.opcode & 16 ) == 0 &&
+ ( CUR.opcode & 8 ) == 0 &&
+ ( CUR.sph_tweak_flags & SPH_TWEAK_COURIER_NEW_2_HACK ) )
+ distance += 64;
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
CUR_Func_move( &CUR.zp1, point, distance - cur_dist );
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ B2 = CUR.zp1.cur[point].y;
+
+ /* Reverse move if necessary */
+ if ( CUR.ignore_x_mode )
+ {
+ if ( ( CUR.sph_tweak_flags & SPH_TWEAK_SKIP_OFFPIXEL_Y_MOVES ) &&
+ CUR.GS.freeVector.y != 0 &&
+ B1 % 64 == 0 &&
+ B2 % 64 != 0 &&
+ !CUR.size->ttfautohinted )
+ reverse_move = TRUE;
+
+ if ( ( CUR.sph_tweak_flags & SPH_TWEAK_SKIP_NONPIXEL_Y_MOVES ) &&
+ CUR.GS.freeVector.y != 0 &&
+ B2 % 64 != 0 &&
+ B1 % 64 != 0 )
+ reverse_move = TRUE;
+
+ if ( ( CUR.sph_tweak_flags &
+ SPH_TWEAK_DELTAP_SKIP_EXAGGERATED_VALUES ) &&
+ !reverse_move &&
+ FT_ABS( B1 - B2 ) >= 64 )
+ reverse_move = TRUE;
+ }
+
+ if ( reverse_move )
+ CUR_Func_move( &CUR.zp1, point, -( distance - cur_dist ) );
+
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
Fail:
CUR.GS.rp1 = CUR.GS.rp0;
@@ -6352,6 +6681,16 @@
FT_UNUSED_ARG;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( CUR.ignore_x_mode &&
+ CUR.iup_called &&
+ ( CUR.sph_tweak_flags & SPH_TWEAK_NO_ALIGNRP_AFTER_IUP ) )
+ {
+ CUR.error = TT_Err_Invalid_Reference;
+ goto Fail;
+ }
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
if ( CUR.top < CUR.GS.loop ||
BOUNDS( CUR.GS.rp0, CUR.zp0.n_points ) )
{
@@ -6404,7 +6743,7 @@
a0, a1,
b0, b1;
- FT_F26Dot6 discriminant;
+ FT_F26Dot6 discriminant, dotproduct;
FT_F26Dot6 dx, dy,
dax, day,
@@ -6433,6 +6772,8 @@
return;
}
+ /* Cramer's rule */
+
dbx = CUR.zp0.cur[b1].x - CUR.zp0.cur[b0].x;
dby = CUR.zp0.cur[b1].y - CUR.zp0.cur[b0].y;
@@ -6444,15 +6785,25 @@
CUR.zp2.tags[point] |= FT_CURVE_TAG_TOUCH_BOTH;
- discriminant = TT_MULDIV( dax, -dby, 0x40 ) +
- TT_MULDIV( day, dbx, 0x40 );
+ discriminant = FT_MulDiv( dax, -dby, 0x40 ) +
+ FT_MulDiv( day, dbx, 0x40 );
+ dotproduct = FT_MulDiv( dax, dbx, 0x40 ) +
+ FT_MulDiv( day, dby, 0x40 );
- if ( FT_ABS( discriminant ) >= 0x40 )
+ /* The discriminant above is actually a cross product of vectors */
+ /* da and db. Together with the dot product, they can be used as */
+ /* surrogates for sine and cosine of the angle between the vectors. */
+ /* Indeed, */
+ /* dotproduct = |da||db|cos(angle) */
+ /* discriminant = |da||db|sin(angle) . */
+ /* We use these equations to reject grazing intersections by */
+ /* thresholding abs(tan(angle)) at 1/19, corresponding to 3 degrees. */
+ if ( 19 * FT_ABS( discriminant ) > FT_ABS( dotproduct ) )
{
- val = TT_MULDIV( dx, -dby, 0x40 ) + TT_MULDIV( dy, dbx, 0x40 );
+ val = FT_MulDiv( dx, -dby, 0x40 ) + FT_MulDiv( dy, dbx, 0x40 );
- R.x = TT_MULDIV( val, dax, discriminant );
- R.y = TT_MULDIV( val, day, discriminant );
+ R.x = FT_MulDiv( val, dax, discriminant );
+ R.y = FT_MulDiv( val, day, discriminant );
CUR.zp2.cur[point].x = CUR.zp1.cur[a0].x + R.x;
CUR.zp2.cur[point].y = CUR.zp1.cur[a0].y + R.y;
@@ -6576,9 +6927,9 @@
FT_Vector vec;
- vec.x = TT_MULFIX( CUR.zp1.orus[CUR.GS.rp2].x - orus_base->x,
+ vec.x = FT_MulFix( CUR.zp1.orus[CUR.GS.rp2].x - orus_base->x,
CUR.metrics.x_scale );
- vec.y = TT_MULFIX( CUR.zp1.orus[CUR.GS.rp2].y - orus_base->y,
+ vec.y = FT_MulFix( CUR.zp1.orus[CUR.GS.rp2].y - orus_base->y,
CUR.metrics.y_scale );
old_range = CUR_fast_dualproj( &vec );
@@ -6613,9 +6964,9 @@
FT_Vector vec;
- vec.x = TT_MULFIX( CUR.zp2.orus[point].x - orus_base->x,
+ vec.x = FT_MulFix( CUR.zp2.orus[point].x - orus_base->x,
CUR.metrics.x_scale );
- vec.y = TT_MULFIX( CUR.zp2.orus[point].y - orus_base->y,
+ vec.y = FT_MulFix( CUR.zp2.orus[point].y - orus_base->y,
CUR.metrics.y_scale );
org_dist = CUR_fast_dualproj( &vec );
@@ -6625,7 +6976,7 @@
if ( org_dist )
new_dist = ( old_range != 0 )
- ? TT_MULDIV( org_dist, cur_range, old_range )
+ ? FT_MulDiv( org_dist, cur_range, old_range )
: cur_dist;
else
new_dist = 0;
@@ -6786,12 +7137,12 @@
if ( !scale_valid )
{
scale_valid = 1;
- scale = TT_MULDIV( org2 + delta2 - ( org1 + delta1 ),
- 0x10000L, orus2 - orus1 );
+ scale = FT_DivFix( org2 + delta2 - ( org1 + delta1 ),
+ orus2 - orus1 );
}
x = ( org1 + delta1 ) +
- TT_MULFIX( worker->orus[i].x - orus1, scale );
+ FT_MulFix( worker->orus[i].x - orus1, scale );
}
worker->curs[i].x = x;
}
@@ -6846,6 +7197,15 @@
contour = 0;
point = 0;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( CUR.ignore_x_mode )
+ {
+ CUR.iup_called = 1;
+ if ( CUR.sph_tweak_flags & SPH_TWEAK_SKIP_IUP )
+ return;
+ }
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
do
{
end_point = CUR.pts.contours[contour] - CUR.pts.first_point;
@@ -6915,6 +7275,9 @@
FT_UShort A;
FT_ULong C;
FT_Long B;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ FT_UShort B1, B2;
+#endif
#ifdef TT_CONFIG_OPTION_UNPATENTED_HINTING
@@ -6988,7 +7351,69 @@
B++;
B = B * 64 / ( 1L << CUR.GS.delta_shift );
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ /*
+ * Allow delta move if
+ *
+ * - not using ignore_x_mode rendering
+ * - glyph is specifically set to allow it
+ * - glyph is composite and freedom vector is not subpixel vector
+ */
+ if ( !CUR.ignore_x_mode ||
+ ( CUR.sph_tweak_flags & SPH_TWEAK_ALWAYS_DO_DELTAP ) ||
+ ( CUR.is_composite && CUR.GS.freeVector.y != 0 ) )
+ CUR_Func_move( &CUR.zp0, A, B );
+
+ /* Otherwise apply subpixel hinting and compatibility mode rules */
+ else if ( CUR.ignore_x_mode )
+ {
+ if ( CUR.GS.freeVector.y != 0 )
+ B1 = CUR.zp0.cur[A].y;
+ else
+ B1 = CUR.zp0.cur[A].x;
+
+ /* Standard Subpixel Hinting: Allow y move */
+ if ( !CUR.compatibility_mode && CUR.GS.freeVector.y != 0 )
+ CUR_Func_move( &CUR.zp0, A, B );
+
+ /* Compatibility Mode: Allow x or y move if point touched in
+ Y direction */
+ else if ( CUR.compatibility_mode &&
+ !( CUR.sph_tweak_flags & SPH_TWEAK_ALWAYS_SKIP_DELTAP ) )
+ {
+ /* save the y value of the point now; compare after move */
+ B1 = CUR.zp0.cur[A].y;
+
+ if ( ( CUR.sph_tweak_flags & SPH_TWEAK_ROUND_NONPIXEL_Y_MOVES ) )
+ B = FT_PIX_ROUND( B1 + B ) - B1;
+
+ /*
+ * Allow delta move if using compatibility_mode, IUP has not
+ * been called, and point is touched on Y.
+ */
+ if ( !CUR.iup_called &&
+ ( CUR.zp0.tags[A] & FT_CURVE_TAG_TOUCH_Y ) )
+ CUR_Func_move( &CUR.zp0, A, B );
+ }
+
+ B2 = CUR.zp0.cur[A].y;
+
+ /* Reverse this move if it results in a disallowed move */
+ if ( CUR.GS.freeVector.y != 0 &&
+ ( ( ( CUR.sph_tweak_flags &
+ SPH_TWEAK_SKIP_OFFPIXEL_Y_MOVES ) &&
+ B1 % 64 == 0 &&
+ B2 % 64 != 0 &&
+ !CUR.size->ttfautohinted ) ||
+ ( ( CUR.sph_tweak_flags &
+ SPH_TWEAK_SKIP_NONPIXEL_Y_MOVES ) &&
+ B1 % 64 != 0 &&
+ B2 % 64 != 0 ) ) )
+ CUR_Func_move( &CUR.zp0, A, -B );
+ }
+#else
CUR_Func_move( &CUR.zp0, A, B );
+#endif /* *TT_CONFIG_OPTION_SUBPIXEL_HINTING */
}
}
else
@@ -7118,22 +7543,113 @@
K = 0;
- /* We return MS rasterizer version 1.7 for the font scaler. */
- if ( ( args[0] & 1 ) != 0 )
- K = 35;
-
- /* Has the glyph been rotated? */
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ /********************************/
+ /* RASTERIZER VERSION */
+ /* Selector Bit: 0 */
+ /* Return Bit(s): 0-7 */
+ /* */
+ if ( ( args[0] & 1 ) != 0 && CUR.ignore_x_mode )
+ {
+ K = CUR.rasterizer_version;
+#ifdef SPH_DEBUG_MORE_VERBOSE
+ printf(" SETTING AS %d\n", CUR.rasterizer_version );
+#endif
+ }
+ else
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+ if ( ( args[0] & 1 ) != 0 )
+ K = 35;
+
+ /********************************/
+ /* GLYPH ROTATED */
+ /* Selector Bit: 1 */
+ /* Return Bit(s): 8 */
+ /* */
if ( ( args[0] & 2 ) != 0 && CUR.tt_metrics.rotated )
K |= 0x80;
- /* Has the glyph been stretched? */
+ /********************************/
+ /* GLYPH STRETCHED */
+ /* Selector Bit: 2 */
+ /* Return Bit(s): 9 */
+ /* */
if ( ( args[0] & 4 ) != 0 && CUR.tt_metrics.stretched )
K |= 1 << 8;
- /* Are we hinting for grayscale? */
+ /********************************/
+ /* HINTING FOR GRAYSCALE */
+ /* Selector Bit: 5 */
+ /* Return Bit(s): 12 */
+ /* */
if ( ( args[0] & 32 ) != 0 && CUR.grayscale )
K |= 1 << 12;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( CUR.ignore_x_mode && CUR.rasterizer_version >= 35 )
+ {
+ /********************************/
+ /* HINTING FOR GRAYSCALE */
+ /* Selector Bit: 5 */
+ /* Return Bit(s): 12 */
+ /* */
+ if ( ( args[0] & 32 ) != 0 && CUR.grayscale_hinting )
+ K |= 1 << 12;
+
+ /********************************/
+ /* HINTING FOR SUBPIXEL */
+ /* Selector Bit: 6 */
+ /* Return Bit(s): 13 */
+ /* */
+ if ( ( args[0] & 64 ) != 0 &&
+ CUR.subpixel_hinting &&
+ CUR.rasterizer_version >= 37 )
+ {
+ K |= 1 << 13;
+
+ /* the stuff below is irrelevant if subpixel_hinting is not set */
+
+ /********************************/
+ /* COMPATIBLE WIDTHS ENABLED */
+ /* Selector Bit: 7 */
+ /* Return Bit(s): 14 */
+ /* */
+ /* Functionality still needs to be added */
+ if ( ( args[0] & 128 ) != 0 && CUR.compatible_widths )
+ K |= 1 << 14;
+
+ /********************************/
+ /* SYMMETRICAL SMOOTHING */
+ /* Selector Bit: 8 */
+ /* Return Bit(s): 15 */
+ /* */
+ /* Functionality still needs to be added */
+ if ( ( args[0] & 256 ) != 0 && CUR.symmetrical_smoothing )
+ K |= 1 << 15;
+
+ /********************************/
+ /* HINTING FOR BGR? */
+ /* Selector Bit: 9 */
+ /* Return Bit(s): 16 */
+ /* */
+ /* Functionality still needs to be added */
+ if ( ( args[0] & 512 ) != 0 && CUR.bgr )
+ K |= 1 << 16;
+
+ if ( CUR.rasterizer_version >= 38 )
+ {
+ /********************************/
+ /* SUBPIXEL POSITIONED? */
+ /* Selector Bit: 10 */
+ /* Return Bit(s): 17 */
+ /* */
+ /* Functionality still needs to be added */
+ if ( ( args[0] & 1024 ) != 0 && CUR.subpixel_positioned )
+ K |= 1 << 17;
+ }
+ }
+ }
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
args[0] = K;
}
@@ -7509,6 +8025,11 @@
cur = *exc;
#endif
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( CUR.ignore_x_mode )
+ CUR.iup_called = FALSE;
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
/* set CVT functions */
CUR.tt_metrics.ratio = 0;
if ( CUR.metrics.x_ppem != CUR.metrics.y_ppem )
@@ -7780,7 +8301,13 @@
break;
case 0x2B: /* CALL */
- Ins_CALL( EXEC_ARG_ args );
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( !CUR.ignore_x_mode ||
+ !CUR.iup_called ||
+ ( CUR.iup_called &&
+ !( CUR.sph_tweak_flags & SPH_TWEAK_NO_CALL_AFTER_IUP ) ) )
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+ Ins_CALL( EXEC_ARG_ args );
break;
case 0x2C: /* FDEF */
@@ -7796,10 +8323,13 @@
Ins_MDAP( EXEC_ARG_ args );
break;
-
case 0x30: /* IUP */
case 0x31: /* IUP */
- Ins_IUP( EXEC_ARG_ args );
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( CUR.ignore_x_mode )
+ CUR.iup_called = TRUE;
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+ Ins_IUP( EXEC_ARG_ args );
break;
case 0x32: /* SHP */
@@ -7958,7 +8488,13 @@
break;
case 0x5D: /* DELTAP1 */
- Ins_DELTAP( EXEC_ARG_ args );
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ if ( !CUR.ignore_x_mode ||
+ !CUR.iup_called ||
+ ( CUR.iup_called &&
+ !( CUR.sph_tweak_flags & SPH_TWEAK_NO_DELTAP_AFTER_IUP ) ) )
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+ Ins_DELTAP( EXEC_ARG_ args );
break;
case 0x5E: /* SDB */
diff --git a/freetype/src/truetype/ttinterp.h b/freetype/src/truetype/ttinterp.h
index 6d0fc03d6..f4336121b 100644
--- a/freetype/src/truetype/ttinterp.h
+++ b/freetype/src/truetype/ttinterp.h
@@ -4,7 +4,7 @@
/* */
/* TrueType bytecode interpreter (specification). */
/* */
-/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2010 by */
+/* Copyright 1996-2007, 2010, 2012 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -107,6 +107,48 @@ FT_BEGIN_HEADER
} TT_CallRec, *TT_CallStack;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+
+ /*************************************************************************/
+ /* */
+ /* These structures define rules used to tweak subpixel hinting for */
+ /* various fonts. "", 0, "", NULL value indicates to match any value. */
+ /* */
+
+#define MAX_NAME_SIZE 32
+#define MAX_CLASS_MEMBERS 100
+
+ typedef struct SPH_TweakRule_
+ {
+ const char family[MAX_NAME_SIZE];
+ const FT_UInt ppem;
+ const char style[MAX_NAME_SIZE];
+ const FT_ULong glyph;
+
+ } SPH_TweakRule;
+
+
+ typedef struct SPH_ScaleRule_
+ {
+ const char family[MAX_NAME_SIZE];
+ const FT_UInt ppem;
+ const char style[MAX_NAME_SIZE];
+ const FT_ULong glyph;
+ const FT_ULong scale;
+
+ } SPH_ScaleRule;
+
+
+ typedef struct Font_Class_
+ {
+ const char name[MAX_NAME_SIZE];
+ const char member[MAX_CLASS_MEMBERS][MAX_NAME_SIZE];
+
+ } Font_Class;
+
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
+
/*************************************************************************/
/* */
/* The main structure for the interpreter which collects all necessary */
@@ -218,12 +260,43 @@ FT_BEGIN_HEADER
FT_Bool grayscale; /* are we hinting for grayscale? */
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ TT_Round_Func func_round_sphn; /* subpixel rounding function */
+
+ FT_Bool grayscale_hinting; /* Using grayscale hinting? */
+ FT_Bool subpixel_hinting; /* Using subpixel hinting? */
+ FT_Bool native_hinting; /* Using native hinting? */
+ FT_Bool ignore_x_mode; /* Standard rendering mode for */
+ /* subpixel hinting. On if gray */
+ /* or subpixel hinting is on ) */
+ FT_Bool compatibility_mode;/* Additional exceptions to */
+ /* native TT rules for legacy */
+ /* fonts. Implies */
+ /* ignore_x_mode. */
+
+ /* The following 4 aren't fully implemented but here for MS rasterizer */
+ /* compatibility. */
+ FT_Bool compatible_widths; /* compatible widths? */
+ FT_Bool symmetrical_smoothing; /* symmetrical_smoothing? */
+ FT_Bool bgr; /* bgr instead of rgb? */
+ FT_Bool subpixel_positioned; /* subpixel positioned */
+ /* (DirectWrite ClearType)? */
+
+ FT_Int rasterizer_version; /* MS rasterizer version */
+
+ FT_Bool iup_called; /* IUP called for glyph? */
+
+ FT_ULong sph_tweak_flags; /* flags to control */
+ /* hint tweaks */
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
} TT_ExecContextRec;
extern const TT_GraphicsState tt_default_graphics_state;
+#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
FT_LOCAL( FT_Error )
TT_Goto_CodeRange( TT_ExecContext exec,
FT_Int range,
@@ -246,6 +319,7 @@ FT_BEGIN_HEADER
FT_Long multiplier,
void* _pbuff,
FT_ULong new_max );
+#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
/*************************************************************************/
@@ -270,6 +344,8 @@ FT_BEGIN_HEADER
FT_EXPORT( TT_ExecContext )
TT_New_Context( TT_Driver driver );
+
+#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
FT_LOCAL( FT_Error )
TT_Done_Context( TT_ExecContext exec );
@@ -285,6 +361,7 @@ FT_BEGIN_HEADER
FT_LOCAL( FT_Error )
TT_Run_Context( TT_ExecContext exec,
FT_Bool debug );
+#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
/*************************************************************************/
diff --git a/freetype/src/truetype/ttobjs.c b/freetype/src/truetype/ttobjs.c
index 07b0570f1..54fffcb58 100644
--- a/freetype/src/truetype/ttobjs.c
+++ b/freetype/src/truetype/ttobjs.c
@@ -4,7 +4,7 @@
/* */
/* Objects manager (body). */
/* */
-/* Copyright 1996-2011 */
+/* Copyright 1996-2012 */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -764,7 +764,7 @@
exec->threshold = 0;
exec->instruction_trap = FALSE;
- exec->F_dot_P = 0x10000L;
+ exec->F_dot_P = 0x4000L;
exec->pedantic_hinting = pedantic;
@@ -1190,16 +1190,14 @@
size->ttmetrics.scale = metrics->x_scale;
size->ttmetrics.ppem = metrics->x_ppem;
size->ttmetrics.x_ratio = 0x10000L;
- size->ttmetrics.y_ratio = FT_MulDiv( metrics->y_ppem,
- 0x10000L,
+ size->ttmetrics.y_ratio = FT_DivFix( metrics->y_ppem,
metrics->x_ppem );
}
else
{
size->ttmetrics.scale = metrics->y_scale;
size->ttmetrics.ppem = metrics->y_ppem;
- size->ttmetrics.x_ratio = FT_MulDiv( metrics->x_ppem,
- 0x10000L,
+ size->ttmetrics.x_ratio = FT_DivFix( metrics->x_ppem,
metrics->y_ppem );
size->ttmetrics.y_ratio = 0x10000L;
}
diff --git a/freetype/src/truetype/ttobjs.h b/freetype/src/truetype/ttobjs.h
index 149428869..612018eb7 100644
--- a/freetype/src/truetype/ttobjs.h
+++ b/freetype/src/truetype/ttobjs.h
@@ -173,11 +173,12 @@ FT_BEGIN_HEADER
/* */
typedef struct TT_DefRecord_
{
- FT_Int range; /* in which code range is it located? */
- FT_Long start; /* where does it start? */
- FT_Long end; /* where does it end? */
- FT_UInt opc; /* function #, or instruction code */
- FT_Bool active; /* is it active? */
+ FT_Int range; /* in which code range is it located? */
+ FT_Long start; /* where does it start? */
+ FT_Long end; /* where does it end? */
+ FT_UInt opc; /* function #, or instruction code */
+ FT_Bool active; /* is it active? */
+ FT_Bool inline_delta; /* is function that defines inline delta? */
} TT_DefRecord, *TT_DefArray;
@@ -190,7 +191,7 @@ FT_BEGIN_HEADER
{
FT_Fixed xx, xy; /* transformation matrix coefficients */
FT_Fixed yx, yy;
- FT_F26Dot6 ox, oy; /* offsets */
+ FT_F26Dot6 ox, oy; /* offsets */
} TT_Transform;
@@ -333,6 +334,7 @@ FT_BEGIN_HEADER
FT_Bool bytecode_ready;
FT_Bool cvt_ready;
+ FT_Bool ttfautohinted;
#endif /* TT_USE_BYTECODE_INTERPRETER */
@@ -427,6 +429,10 @@ FT_BEGIN_HEADER
tt_slot_init( FT_GlyphSlot slot );
+ /* auxiliary */
+#define IS_HINTED( flags ) ( ( flags & FT_LOAD_NO_HINTING ) == 0 )
+
+
FT_END_HEADER
#endif /* __TTOBJS_H__ */
diff --git a/freetype/src/truetype/ttpic.c b/freetype/src/truetype/ttpic.c
index ada8f1b3c..20bd2e668 100644
--- a/freetype/src/truetype/ttpic.c
+++ b/freetype/src/truetype/ttpic.c
@@ -4,7 +4,7 @@
/* */
/* The FreeType position independent code services for truetype module. */
/* */
-/* Copyright 2009, 2010 by */
+/* Copyright 2009, 2010, 2012 by */
/* Oran Agra and Mickey Gabel. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -41,11 +41,12 @@
FT_Init_Class_tt_service_truetype_glyf(
FT_Service_TTGlyfRec* sv_ttglyf );
+
void
tt_driver_class_pic_free( FT_Library library )
{
FT_PIC_Container* pic_container = &library->pic_container;
- FT_Memory memory = library->memory;
+ FT_Memory memory = library->memory;
if ( pic_container->truetype )
@@ -67,7 +68,7 @@
{
FT_PIC_Container* pic_container = &library->pic_container;
FT_Error error = TT_Err_Ok;
- TTModulePIC* container;
+ TTModulePIC* container = NULL;
FT_Memory memory = library->memory;
@@ -77,7 +78,8 @@
FT_MEM_SET( container, 0, sizeof ( *container ) );
pic_container->truetype = container;
- /* initialize pointer table - this is how the module usually expects this data */
+ /* initialize pointer table - this is how the module usually */
+ /* expects this data */
error = FT_Create_Class_tt_services( library,
&container->tt_services );
if ( error )
@@ -88,6 +90,7 @@
#endif
FT_Init_Class_tt_service_truetype_glyf(
&container->tt_service_truetype_glyf );
+
Exit:
if ( error )
tt_driver_class_pic_free( library );
diff --git a/freetype/src/truetype/ttpic.h b/freetype/src/truetype/ttpic.h
index 48f43a5f9..625c9f169 100644
--- a/freetype/src/truetype/ttpic.h
+++ b/freetype/src/truetype/ttpic.h
@@ -4,7 +4,7 @@
/* */
/* The FreeType position independent code services for truetype module. */
/* */
-/* Copyright 2009 by */
+/* Copyright 2009, 2012 by */
/* Oran Agra and Mickey Gabel. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -23,9 +23,10 @@
FT_BEGIN_HEADER
#ifndef FT_CONFIG_OPTION_PIC
-#define FT_TT_SERVICES_GET tt_services
-#define FT_TT_SERVICE_GX_MULTI_MASTERS_GET tt_service_gx_multi_masters
-#define FT_TT_SERVICE_TRUETYPE_GLYF_GET tt_service_truetype_glyf
+
+#define TT_SERVICES_GET tt_services
+#define TT_SERVICE_GX_MULTI_MASTERS_GET tt_service_gx_multi_masters
+#define TT_SERVICE_TRUETYPE_GLYF_GET tt_service_truetype_glyf
#else /* FT_CONFIG_OPTION_PIC */
@@ -33,19 +34,27 @@ FT_BEGIN_HEADER
#include FT_SERVICE_MULTIPLE_MASTERS_H
#include FT_SERVICE_TRUETYPE_GLYF_H
- typedef struct TTModulePIC_
+
+ typedef struct TTModulePIC_
{
- FT_ServiceDescRec* tt_services;
+ FT_ServiceDescRec* tt_services;
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
FT_Service_MultiMastersRec tt_service_gx_multi_masters;
#endif
- FT_Service_TTGlyfRec tt_service_truetype_glyf;
+ FT_Service_TTGlyfRec tt_service_truetype_glyf;
+
} TTModulePIC;
-#define GET_PIC(lib) ((TTModulePIC*)((lib)->pic_container.truetype))
-#define FT_TT_SERVICES_GET (GET_PIC(library)->tt_services)
-#define FT_TT_SERVICE_GX_MULTI_MASTERS_GET (GET_PIC(library)->tt_service_gx_multi_masters)
-#define FT_TT_SERVICE_TRUETYPE_GLYF_GET (GET_PIC(library)->tt_service_truetype_glyf)
+
+#define GET_PIC( lib ) \
+ ( (TTModulePIC*)((lib)->pic_container.truetype) )
+#define TT_SERVICES_GET \
+ ( GET_PIC( library )->tt_services )
+#define TT_SERVICE_GX_MULTI_MASTERS_GET \
+ ( GET_PIC( library )->tt_service_gx_multi_masters )
+#define TT_SERVICE_TRUETYPE_GLYF_GET \
+ ( GET_PIC( library )->tt_service_truetype_glyf )
+
/* see ttpic.c for the implementation */
void
diff --git a/freetype/src/truetype/ttsubpix.c b/freetype/src/truetype/ttsubpix.c
new file mode 100644
index 000000000..d09d3d89d
--- /dev/null
+++ b/freetype/src/truetype/ttsubpix.c
@@ -0,0 +1,265 @@
+/***************************************************************************/
+/* */
+/* ttsubpix.c */
+/* */
+/* TrueType Subpixel Hinting. */
+/* */
+/* Copyright 2010-2012 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. */
+/* */
+/***************************************************************************/
+
+#include <ft2build.h>
+#include FT_INTERNAL_DEBUG_H
+#include FT_INTERNAL_CALC_H
+#include FT_INTERNAL_STREAM_H
+#include FT_INTERNAL_SFNT_H
+#include FT_TRUETYPE_TAGS_H
+#include FT_OUTLINE_H
+
+#include "ttsubpix.h"
+
+
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+
+ FT_LOCAL_DEF( FT_Bool )
+ is_member_of_family_class( const FT_String* detected_font_name,
+ const FT_String* rule_font_name )
+ {
+ FT_UInt i, j;
+
+
+ /* Does font name match rule family? */
+ if ( strcmp( detected_font_name, rule_font_name ) == 0 )
+ return TRUE;
+
+ /* Is font name a wildcard ""? */
+ if ( strcmp( rule_font_name, "" ) == 0 )
+ return TRUE;
+
+ /* Is font name contained in a class list? */
+ for ( i = 0; i < FAMILY_CLASS_RULES_SIZE; i++ )
+ {
+ if ( strcmp( FAMILY_CLASS_Rules[i].name, rule_font_name ) == 0 )
+ {
+ for ( j = 0; j < MAX_CLASS_MEMBERS; j++ )
+ {
+ if ( strcmp( FAMILY_CLASS_Rules[i].member[j], "" ) == 0 )
+ continue;
+ if ( strcmp( FAMILY_CLASS_Rules[i].member[j],
+ detected_font_name ) == 0 )
+ return TRUE;
+ }
+ }
+ }
+
+ return FALSE;
+ }
+
+
+ FT_LOCAL_DEF( FT_Bool )
+ is_member_of_style_class( const FT_String* detected_font_style,
+ const FT_String* rule_font_style )
+ {
+ FT_UInt i, j;
+
+
+ /* Does font style match rule style? */
+ if ( strcmp( detected_font_style, rule_font_style ) == 0 )
+ return TRUE;
+
+ /* Is font style a wildcard ""? */
+ if ( strcmp( rule_font_style, "" ) == 0 )
+ return TRUE;
+
+ /* Is font style contained in a class list? */
+ for ( i = 0; i < STYLE_CLASS_RULES_SIZE; i++ )
+ {
+ if ( strcmp( STYLE_CLASS_Rules[i].name, rule_font_style ) == 0 )
+ {
+ for ( j = 0; j < MAX_CLASS_MEMBERS; j++ )
+ {
+ if ( strcmp( STYLE_CLASS_Rules[i].member[j], "" ) == 0 )
+ continue;
+ if ( strcmp( STYLE_CLASS_Rules[i].member[j],
+ detected_font_style ) == 0 )
+ return TRUE;
+ }
+ }
+ }
+
+ return FALSE;
+ }
+
+
+ FT_LOCAL_DEF( FT_Bool )
+ sph_test_tweak( TT_Face face,
+ FT_String* family,
+ FT_UInt ppem,
+ FT_String* style,
+ FT_UInt glyph_index,
+ SPH_TweakRule* rule,
+ FT_UInt num_rules )
+ {
+ FT_UInt i;
+
+
+ /* rule checks may be able to be optimized further */
+ for ( i = 0; i < num_rules; i++ )
+ {
+ if ( family &&
+ ( is_member_of_family_class ( family, rule[i].family ) ) )
+ if ( rule[i].ppem == 0 ||
+ rule[i].ppem == ppem )
+ if ( style &&
+ is_member_of_style_class ( style, rule[i].style ) )
+ if ( rule[i].glyph == 0 ||
+ FT_Get_Char_Index( (FT_Face)face,
+ rule[i].glyph ) == glyph_index )
+ return TRUE;
+ }
+
+ return FALSE;
+ }
+
+
+ FT_LOCAL_DEF( FT_UInt )
+ scale_test_tweak( TT_Face face,
+ FT_String* family,
+ FT_UInt ppem,
+ FT_String* style,
+ FT_UInt glyph_index,
+ SPH_ScaleRule* rule,
+ FT_UInt num_rules )
+ {
+ FT_UInt i;
+
+
+ /* rule checks may be able to be optimized further */
+ for ( i = 0; i < num_rules; i++ )
+ {
+ if ( family &&
+ ( is_member_of_family_class ( family, rule[i].family ) ) )
+ if ( rule[i].ppem == 0 ||
+ rule[i].ppem == ppem )
+ if ( style &&
+ is_member_of_style_class( style, rule[i].style ) )
+ if ( rule[i].glyph == 0 ||
+ FT_Get_Char_Index( (FT_Face)face,
+ rule[i].glyph ) == glyph_index )
+ return rule[i].scale;
+ }
+
+ return 1000;
+ }
+
+
+#define TWEAK_RULES( x ) \
+ if ( sph_test_tweak( face, family, ppem, style, glyph_index, \
+ x##_Rules, x##_RULES_SIZE ) ) \
+ loader->exec->sph_tweak_flags |= SPH_TWEAK_##x;
+
+#define TWEAK_RULES_EXCEPTIONS( x ) \
+ if ( sph_test_tweak( face, family, ppem, style, glyph_index, \
+ x##_Rules_Exceptions, x##_RULES_EXCEPTIONS_SIZE ) ) \
+ loader->exec->sph_tweak_flags &= ~SPH_TWEAK_##x;
+
+
+ FT_LOCAL_DEF( void )
+ sph_set_tweaks( TT_Loader loader,
+ FT_UInt glyph_index )
+ {
+ TT_Face face = (TT_Face)loader->face;
+ FT_String* family = face->root.family_name;
+ int ppem = loader->size->metrics.x_ppem;
+ FT_String* style = face->root.style_name;
+
+
+ /* don't apply rules if style isn't set */
+ if ( !face->root.style_name )
+ return;
+
+#ifdef SPH_DEBUG_MORE_VERBOSE
+ printf( "%s,%d,%s,%c=%d ",
+ family, ppem, style, glyph_index, glyph_index );
+#endif
+
+ TWEAK_RULES( PIXEL_HINTING );
+
+ if ( loader->exec->sph_tweak_flags & SPH_TWEAK_PIXEL_HINTING )
+ {
+ loader->exec->ignore_x_mode = FALSE;
+ return;
+ }
+
+ TWEAK_RULES( ALLOW_X_DMOVE );
+ TWEAK_RULES( ALLOW_X_DMOVEX );
+ TWEAK_RULES( ALLOW_X_MOVE_ZP2 );
+ TWEAK_RULES( ALWAYS_DO_DELTAP );
+ TWEAK_RULES( ALWAYS_SKIP_DELTAP );
+ TWEAK_RULES( DEEMBOLDEN );
+ TWEAK_RULES( DELTAP_SKIP_EXAGGERATED_VALUES );
+ TWEAK_RULES( DO_SHPIX );
+ TWEAK_RULES( EMBOLDEN );
+ TWEAK_RULES( MIAP_HACK );
+ TWEAK_RULES( NORMAL_ROUND );
+ TWEAK_RULES( NO_ALIGNRP_AFTER_IUP );
+ TWEAK_RULES( NO_CALL_AFTER_IUP );
+ TWEAK_RULES( NO_DELTAP_AFTER_IUP );
+ TWEAK_RULES( RASTERIZER_35 );
+ TWEAK_RULES( SKIP_INLINE_DELTAS );
+ TWEAK_RULES( SKIP_IUP );
+ TWEAK_RULES( MIRP_CVT_ZERO );
+
+ TWEAK_RULES( SKIP_OFFPIXEL_Y_MOVES );
+ TWEAK_RULES_EXCEPTIONS( SKIP_OFFPIXEL_Y_MOVES );
+
+ TWEAK_RULES( SKIP_NONPIXEL_Y_MOVES );
+ TWEAK_RULES_EXCEPTIONS( SKIP_NONPIXEL_Y_MOVES );
+
+ TWEAK_RULES( ROUND_NONPIXEL_Y_MOVES );
+ TWEAK_RULES_EXCEPTIONS( ROUND_NONPIXEL_Y_MOVES );
+
+ if ( loader->exec->sph_tweak_flags & SPH_TWEAK_RASTERIZER_35 )
+ loader->exec->rasterizer_version = 35;
+ else
+ loader->exec->rasterizer_version = SPH_OPTION_SET_RASTERIZER_VERSION;
+
+ /* re-execute fpgm always to avoid problems */
+ loader->exec->size->cvt_ready = FALSE;
+ tt_size_ready_bytecode( loader->exec->size,
+ FT_BOOL( loader->load_flags & FT_LOAD_PEDANTIC ) );
+
+ if ( IS_HINTED( loader->load_flags ) )
+ {
+ TWEAK_RULES( TIMES_NEW_ROMAN_HACK );
+ TWEAK_RULES( COURIER_NEW_2_HACK );
+ }
+
+ if ( sph_test_tweak( face, family, ppem, style, glyph_index,
+ COMPATIBILITY_MODE_Rules, COMPATIBILITY_MODE_RULES_SIZE ) )
+ {
+ loader->exec->compatibility_mode |= TRUE;
+ loader->exec->ignore_x_mode |= TRUE;
+ }
+ else
+ loader->exec->compatibility_mode &= FALSE;
+
+ if ( IS_HINTED( loader->load_flags ) )
+ {
+ if ( sph_test_tweak( face, family, ppem, style, glyph_index,
+ COMPATIBLE_WIDTHS_Rules, COMPATIBLE_WIDTHS_RULES_SIZE ) )
+ loader->exec->compatible_widths |= TRUE;
+ }
+ }
+
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
+
+/* END */
diff --git a/freetype/src/truetype/ttsubpix.h b/freetype/src/truetype/ttsubpix.h
new file mode 100644
index 000000000..2fbff2681
--- /dev/null
+++ b/freetype/src/truetype/ttsubpix.h
@@ -0,0 +1,908 @@
+/***************************************************************************/
+/* */
+/* ttsubpix.h */
+/* */
+/* TrueType Subpixel Hinting. */
+/* */
+/* Copyright 2010-2012 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. */
+/* */
+/***************************************************************************/
+
+
+#ifndef __TTSUBPIX_H__
+#define __TTSUBPIX_H__
+
+#include <ft2build.h>
+#include "ttobjs.h"
+#include "ttinterp.h"
+
+
+FT_BEGIN_HEADER
+
+
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+
+ /*************************************************************************/
+ /* */
+ /* Tweak flags that are set for each glyph by the below rules. */
+ /* */
+ /* */
+#define SPH_TWEAK_ALLOW_X_DMOVE 0x0000001
+#define SPH_TWEAK_ALLOW_X_DMOVEX 0x0000002
+#define SPH_TWEAK_ALLOW_X_MOVE_ZP2 0x0000004
+#define SPH_TWEAK_ALWAYS_DO_DELTAP 0x0000008
+#define SPH_TWEAK_ALWAYS_SKIP_DELTAP 0x0000010
+#define SPH_TWEAK_COURIER_NEW_2_HACK 0x0000020
+#define SPH_TWEAK_DEEMBOLDEN 0x0000040
+#define SPH_TWEAK_DELTAP_SKIP_EXAGGERATED_VALUES 0x0000080
+#define SPH_TWEAK_DO_SHPIX 0x0000100
+#define SPH_TWEAK_EMBOLDEN 0x0000200
+#define SPH_TWEAK_MIAP_HACK 0x0000400
+#define SPH_TWEAK_NORMAL_ROUND 0x0000800
+#define SPH_TWEAK_NO_ALIGNRP_AFTER_IUP 0x0001000
+#define SPH_TWEAK_NO_CALL_AFTER_IUP 0x0002000
+#define SPH_TWEAK_NO_DELTAP_AFTER_IUP 0x0004000
+#define SPH_TWEAK_PIXEL_HINTING 0x0008000
+#define SPH_TWEAK_RASTERIZER_35 0x0010000
+#define SPH_TWEAK_ROUND_NONPIXEL_Y_MOVES 0x0020000
+#define SPH_TWEAK_SKIP_INLINE_DELTAS 0x0040000
+#define SPH_TWEAK_SKIP_IUP 0x0080000
+#define SPH_TWEAK_SKIP_NONPIXEL_Y_MOVES 0x0100000
+#define SPH_TWEAK_SKIP_OFFPIXEL_Y_MOVES 0x0200000
+#define SPH_TWEAK_TIMES_NEW_ROMAN_HACK 0x0400000
+#define SPH_TWEAK_MIRP_CVT_ZERO 0x0800000
+
+
+ FT_LOCAL( FT_Bool )
+ sph_test_tweak( TT_Face face,
+ FT_String* family,
+ FT_UInt ppem,
+ FT_String* style,
+ FT_UInt glyph_index,
+ SPH_TweakRule* rule,
+ FT_UInt num_rules );
+
+ FT_LOCAL_DEF( FT_UInt )
+ scale_test_tweak( TT_Face face,
+ FT_String* family,
+ FT_UInt ppem,
+ FT_String* style,
+ FT_UInt glyph_index,
+ SPH_ScaleRule* rule,
+ FT_UInt num_rules );
+
+ FT_LOCAL( void )
+ sph_set_tweaks( TT_Loader loader,
+ FT_UInt glyph_index );
+
+
+ /*************************************************************************/
+ /* */
+ /* These rules affect how the TT Interpreter does hinting, with the */
+ /* goal of doing subpixel hinting by (in general) ignoring x moves. */
+ /* Some of these rules are fixes that go above and beyond the */
+ /* stated techniques in the MS whitepaper on Cleartype, due to */
+ /* artifacts in many glyphs. So, these rules make some glyphs render */
+ /* better than they do in the MS rasterizer. */
+ /* */
+ /* "" string or 0 int/char indicates to apply to all glyphs. */
+ /* "-" used as dummy placeholders, but any non-matching string works. */
+ /* */
+ /* Some of this could arguably be implemented in fontconfig, however: */
+ /* */
+ /* - Fontconfig can't set things on a glyph-by-glyph basis. */
+ /* - The tweaks that happen here are very low-level, from an average */
+ /* user's point of view and are best implemented in the hinter. */
+ /* */
+ /* The goal is to make the subpixel hinting techniques as generalized */
+ /* as possible across all fonts to prevent the need for extra rules such */
+ /* as these. */
+ /* */
+ /* The rule structure is designed so that entirely new rules can easily */
+ /* be added when a new compatibility feature is discovered. */
+ /* */
+ /* The rule structures could also use some enhancement to handle ranges. */
+ /* */
+ /* ****************** WORK IN PROGRESS ******************* */
+ /* */
+
+ /* These macros are defined absent a method for setting them */
+#define SPH_OPTION_BITMAP_WIDTHS FALSE
+#define SPH_OPTION_SET_SUBPIXEL TRUE
+#define SPH_OPTION_SET_GRAYSCALE FALSE
+#define SPH_OPTION_SET_COMPATIBLE_WIDTHS FALSE
+#define SPH_OPTION_SET_RASTERIZER_VERSION 38
+
+
+ /* Define this to force natural (i.e. not bitmap-compatible) widths. */
+ /* The default leans strongly towards natural widths except for a few */
+ /* legacy fonts where a selective combination produces nicer results. */
+/* #define FORCE_NATURAL_WIDTHS */
+
+
+ /* These are `classes' of fonts that can be grouped together and used in */
+ /* rules below. A blank entry "" is required at the end of these! */
+#define FAMILY_CLASS_RULES_SIZE 7
+
+ Font_Class FAMILY_CLASS_Rules
+ [FAMILY_CLASS_RULES_SIZE] =
+ {
+ { "MS Legacy Fonts",
+ { "Aharoni",
+ "Andale Mono",
+ "Andalus",
+ "Angsana New",
+ "AngsanaUPC",
+ "Arabic Transparent",
+ "Arial Black",
+ "Arial Narrow",
+ "Arial Unicode MS",
+ "Arial",
+ "Batang",
+ "Browallia New",
+ "BrowalliaUPC",
+ "Comic Sans MS",
+ "Cordia New",
+ "CordiaUPC",
+ "Courier New",
+ "DFKai-SB",
+ "David Transparent",
+ "David",
+ "DilleniaUPC",
+ "Estrangelo Edessa",
+ "EucrosiaUPC",
+ "FangSong_GB2312",
+ "Fixed Miriam Transparent",
+ "FrankRuehl",
+ "Franklin Gothic Medium",
+ "FreesiaUPC",
+ "Garamond",
+ "Gautami",
+ "Georgia",
+ "Gulim",
+ "Impact",
+ "IrisUPC",
+ "JasmineUPC",
+ "KaiTi_GB2312",
+ "KodchiangUPC",
+ "Latha",
+ "Levenim MT",
+ "LilyUPC",
+ "Lucida Console",
+ "Lucida Sans Unicode",
+ "MS Gothic",
+ "MS Mincho",
+ "MV Boli",
+ "Mangal",
+ "Marlett",
+ "Microsoft Sans Serif",
+ "Mingliu",
+ "Miriam Fixed",
+ "Miriam Transparent",
+ "Miriam",
+ "Narkisim",
+ "Palatino Linotype",
+ "Raavi",
+ "Rod Transparent",
+ "Rod",
+ "Shruti",
+ "SimHei",
+ "Simplified Arabic Fixed",
+ "Simplified Arabic",
+ "Simsun",
+ "Sylfaen",
+ "Symbol",
+ "Tahoma",
+ "Times New Roman",
+ "Traditional Arabic",
+ "Trebuchet MS",
+ "Tunga",
+ "Verdana",
+ "Webdings",
+ "Wingdings",
+ "",
+ },
+ },
+ { "Core MS Legacy Fonts",
+ { "Arial Black",
+ "Arial Narrow",
+ "Arial Unicode MS",
+ "Arial",
+ "Comic Sans MS",
+ "Courier New",
+ "Garamond",
+ "Georgia",
+ "Impact",
+ "Lucida Console",
+ "Lucida Sans Unicode",
+ "Microsoft Sans Serif",
+ "Palatino Linotype",
+ "Tahoma",
+ "Times New Roman",
+ "Trebuchet MS",
+ "Verdana",
+ "",
+ },
+ },
+ { "Apple Legacy Fonts",
+ { "Geneva",
+ "Times",
+ "Monaco",
+ "Century",
+ "Chalkboard",
+ "Lobster",
+ "Century Gothic",
+ "Optima",
+ "Lucida Grande",
+ "Gill Sans",
+ "Baskerville",
+ "Helvetica",
+ "Helvetica Neue",
+ "",
+ },
+ },
+ { "Legacy Sans Fonts",
+ { "Andale Mono",
+ "Arial Unicode MS",
+ "Arial",
+ "Century Gothic",
+ "Comic Sans MS",
+ "Franklin Gothic Medium",
+ "Geneva",
+ "Lucida Console",
+ "Lucida Grande",
+ "Lucida Sans Unicode",
+ "Lucida Sans Typewriter",
+ "Microsoft Sans Serif",
+ "Monaco",
+ "Tahoma",
+ "Trebuchet MS",
+ "Verdana",
+ "",
+ },
+ },
+
+ { "Misc Legacy Fonts",
+ { "Dark Courier", "", }, },
+ { "Verdana Clones",
+ { "DejaVu Sans",
+ "Bitstream Vera Sans", "", }, },
+ { "Verdana and Clones",
+ { "DejaVu Sans",
+ "Bitstream Vera Sans",
+ "Verdana", "", }, },
+ };
+
+
+ /* Define `classes' of styles that can be grouped together and used in */
+ /* rules below. A blank entry "" is required at the end of these! */
+#define STYLE_CLASS_RULES_SIZE 5
+
+ Font_Class STYLE_CLASS_Rules
+ [STYLE_CLASS_RULES_SIZE] =
+ {
+ { "Regular Class",
+ { "Regular",
+ "Book",
+ "Medium",
+ "Roman",
+ "Normal",
+ "",
+ },
+ },
+ { "Regular/Italic Class",
+ { "Regular",
+ "Book",
+ "Medium",
+ "Italic",
+ "Oblique",
+ "Roman",
+ "Normal",
+ "",
+ },
+ },
+ { "Bold/BoldItalic Class",
+ { "Bold",
+ "Bold Italic",
+ "Black",
+ "",
+ },
+ },
+ { "Bold/Italic/BoldItalic Class",
+ { "Bold",
+ "Bold Italic",
+ "Black",
+ "Italic",
+ "Oblique",
+ "",
+ },
+ },
+ { "Regular/Bold Class",
+ { "Regular",
+ "Book",
+ "Medium",
+ "Normal",
+ "Roman",
+ "Bold",
+ "Black",
+ "",
+ },
+ },
+ };
+
+
+ /* Special fixes for known legacy fonts; */
+ /* this is the primary workhorse rule for legacy fonts */
+#define COMPATIBILITY_MODE_RULES_SIZE 4
+
+ SPH_TweakRule COMPATIBILITY_MODE_Rules
+ [COMPATIBILITY_MODE_RULES_SIZE] =
+ {
+ { "MS Legacy Fonts", 0, "", 0 },
+ { "Apple Legacy Fonts", 0, "", 0 },
+ { "Misc Legacy Fonts", 0, "", 0 },
+ { "Verdana Clones", 0, "", 0 },
+ };
+
+
+ /* Don't do subpixel (ignore_x_mode) hinting; do normal hinting. */
+#define PIXEL_HINTING_RULES_SIZE 4
+
+ SPH_TweakRule PIXEL_HINTING_Rules
+ [PIXEL_HINTING_RULES_SIZE] =
+ {
+ /* these characters are almost always safe */
+ { "", 0, "", '<' },
+ { "", 0, "", '>' },
+ /* fixes the vanishing stem */
+ { "Times New Roman", 0, "Bold", 'A' },
+ { "Times New Roman", 0, "Bold", 'V' },
+ };
+
+
+ /* According to Greg Hitchcock and the MS whitepaper, this should work */
+ /* on all legacy MS fonts, but creates artifacts with some. Only using */
+ /* where absolutely necessary. */
+#define SKIP_INLINE_DELTAS_RULES_SIZE 1
+
+ SPH_TweakRule SKIP_INLINE_DELTAS_Rules
+ [SKIP_INLINE_DELTAS_RULES_SIZE] =
+ {
+ { "-", 0, "", 0 },
+ };
+
+
+ /* Subpixel hinting ignores SHPIX rules on X. Force SHPIX for these. */
+#define DO_SHPIX_RULES_SIZE 1
+
+ SPH_TweakRule DO_SHPIX_Rules
+ [DO_SHPIX_RULES_SIZE] =
+ {
+ { "-", 0, "", 0 },
+ };
+
+
+ /* Skip Y moves that start with a point that is not on a Y pixel */
+ /* boundary and don't move that point to a Y pixel boundary. */
+#define SKIP_NONPIXEL_Y_MOVES_RULES_SIZE 10
+
+ SPH_TweakRule SKIP_NONPIXEL_Y_MOVES_Rules
+ [SKIP_NONPIXEL_Y_MOVES_RULES_SIZE] =
+ {
+ /* fix vwxyz thinness*/
+ { "Consolas", 0, "Regular", 0 },
+ /* fix tiny gap at top of m */
+ { "Arial", 0, "Regular", 'm' },
+ /* Fix thin middle stems */
+ { "Core MS Legacy Fonts", 0, "Regular/Bold Class", 'N' },
+ { "Lucida Grande", 0, "", 'N' },
+ { "Lucida Grande", 0, "Bold", 'y' },
+ /* Cyrillic small letter I */
+ { "Legacy Sans Fonts", 0, "", 0x438 },
+ { "Verdana Clones", 0, "",'N' },
+ { "Ubuntu", 0, "Regular Class", 'N' },
+ /* Fix misshapen x */
+ { "Verdana", 0, "Bold", 'x' },
+ /* Fix misshapen s */
+ { "Tahoma", 0, "", 's' },
+ };
+
+
+#define SKIP_NONPIXEL_Y_MOVES_RULES_EXCEPTIONS_SIZE 6
+
+ SPH_TweakRule SKIP_NONPIXEL_Y_MOVES_Rules_Exceptions
+ [SKIP_NONPIXEL_Y_MOVES_RULES_EXCEPTIONS_SIZE] =
+ {
+ { "Tahoma", 0, "", 'N' },
+ { "Comic Sans MS", 0, "", 'N' },
+ { "Verdana", 0, "Regular/Bold Class", 'N' },
+ { "Verdana", 11, "Bold", 'x' },
+ /* Cyrillic small letter I */
+ { "Arial", 0, "", 0x438 },
+ { "Trebuchet MS", 0, "Bold", 0 },
+ };
+
+
+ /* Skip Y moves that move a point off a Y pixel boundary. */
+ /* This fixes Tahoma, Trebuchet oddities and some issues with `$'. */
+#define SKIP_OFFPIXEL_Y_MOVES_RULES_SIZE 5
+
+ SPH_TweakRule SKIP_OFFPIXEL_Y_MOVES_Rules
+ [SKIP_OFFPIXEL_Y_MOVES_RULES_SIZE] =
+ {
+ { "MS Legacy Fonts", 0, "", 0 },
+ { "Apple Legacy Fonts", 0, "", 0 },
+ { "Misc Legacy Fonts", 0, "", 0 },
+ { "Ubuntu", 0, "Regular Class", 0 },
+ { "Verdana Clones", 0, "", 0 },
+ };
+
+
+#define SKIP_OFFPIXEL_Y_MOVES_RULES_EXCEPTIONS_SIZE 1
+
+ SPH_TweakRule SKIP_OFFPIXEL_Y_MOVES_Rules_Exceptions
+ [SKIP_OFFPIXEL_Y_MOVES_RULES_EXCEPTIONS_SIZE] =
+ {
+ { "-", 0, "", 0 },
+ };
+
+
+ /* Round moves that don't move a point to a Y pixel boundary. */
+#define ROUND_NONPIXEL_Y_MOVES_RULES_SIZE 3
+
+ SPH_TweakRule ROUND_NONPIXEL_Y_MOVES_Rules
+ [ROUND_NONPIXEL_Y_MOVES_RULES_SIZE] =
+ {
+ /* Droid font instructions don't snap Y to pixels */
+ { "Droid Sans", 0, "Regular/Italic Class", 0 },
+ { "Droid Sans Mono", 0, "", 0 },
+ { "Ubuntu", 0, "", 0 },
+ };
+
+
+#define ROUND_NONPIXEL_Y_MOVES_RULES_EXCEPTIONS_SIZE 3
+
+ SPH_TweakRule ROUND_NONPIXEL_Y_MOVES_Rules_Exceptions
+ [ROUND_NONPIXEL_Y_MOVES_RULES_EXCEPTIONS_SIZE] =
+ {
+ { "Droid Sans", 12, "Bold", 0 },
+ { "Droid Sans", 13, "Bold", 0 },
+ { "Droid Sans", 16, "Bold", 0 },
+ };
+
+
+ /* Allow a Direct_Move_X along X freedom vector if matched. */
+#define ALLOW_X_DMOVEX_RULES_SIZE 1
+
+ SPH_TweakRule ALLOW_X_DMOVEX_Rules
+ [ALLOW_X_DMOVEX_RULES_SIZE] =
+ {
+ { "-", 0, "Regular", 0 },
+ };
+
+
+ /* Allow a Direct_Move along X freedom vector if matched. */
+#define ALLOW_X_DMOVE_RULES_SIZE 1
+
+ SPH_TweakRule ALLOW_X_DMOVE_Rules
+ [ALLOW_X_DMOVE_RULES_SIZE] =
+ {
+ /* Fixes vanishing diagonal in 4 */
+ { "Verdana", 0, "Regular", '4' },
+ };
+
+
+ /* Allow a ZP2 move along freedom vector if matched; */
+ /* This is called from SHP, SHPIX, SHC, SHZ. */
+#define ALLOW_X_MOVE_ZP2_RULES_SIZE 1
+
+ SPH_TweakRule ALLOW_X_MOVE_ZP2_Rules
+ [ALLOW_X_MOVE_ZP2_RULES_SIZE] =
+ {
+ { "-", 0, "", 0 },
+ };
+
+
+ /* Return MS rasterizer version 35 if matched. */
+#define RASTERIZER_35_RULES_SIZE 8
+
+ SPH_TweakRule RASTERIZER_35_Rules
+ [RASTERIZER_35_RULES_SIZE] =
+ {
+ /* This seems to be the only way to make these look good */
+ { "Times New Roman", 0, "Regular", 'i' },
+ { "Times New Roman", 0, "Regular", 'j' },
+ { "Times New Roman", 0, "Regular", 'm' },
+ { "Times New Roman", 0, "Regular", 'r' },
+ { "Times New Roman", 0, "Regular", 'a' },
+ { "Times New Roman", 0, "Regular", 'n' },
+ { "Times New Roman", 0, "Regular", 'p' },
+ { "Times", 0, "", 0 },
+ };
+
+
+ /* Don't round to the subpixel grid. Round to pixel grid. */
+#define NORMAL_ROUND_RULES_SIZE 2
+
+ SPH_TweakRule NORMAL_ROUND_Rules
+ [NORMAL_ROUND_RULES_SIZE] =
+ {
+ /* Fix point "explosions" */
+ { "Courier New", 0, "", 0 },
+ { "Verdana", 10, "Regular", '4' },
+ };
+
+
+ /* Skip IUP instructions if matched. */
+#define SKIP_IUP_RULES_SIZE 1
+
+ SPH_TweakRule SKIP_IUP_Rules
+ [SKIP_IUP_RULES_SIZE] =
+ {
+ { "Arial", 13, "Regular", 'a' },
+ };
+
+
+ /* Skip MIAP Twilight hack if matched. */
+#define MIAP_HACK_RULES_SIZE 1
+
+ SPH_TweakRule MIAP_HACK_Rules
+ [MIAP_HACK_RULES_SIZE] =
+ {
+ { "Geneva", 12, "", 0 },
+ };
+
+
+ /* Skip DELTAP instructions if matched. */
+#define ALWAYS_SKIP_DELTAP_RULES_SIZE 16
+
+ SPH_TweakRule ALWAYS_SKIP_DELTAP_Rules
+ [ALWAYS_SKIP_DELTAP_RULES_SIZE] =
+ {
+ { "Georgia", 0, "Regular", 'k' },
+ /* fixes problems with W M w */
+ { "Trebuchet MS", 0, "Italic", 0 },
+ /* fix various problems with e in different versions */
+ { "Trebuchet MS", 14, "Regular", 'e' },
+ { "Trebuchet MS", 13, "Regular", 'e' },
+ { "Trebuchet MS", 15, "Regular", 'e' },
+ { "Arial", 11, "Regular", 's' },
+ { "Verdana", 10, "Regular", 0 },
+ { "Verdana", 9, "Regular", 0 },
+ /* Cyrillic small letter short I */
+ { "Legacy Sans Fonts", 0, "", 0x438 },
+ { "Legacy Sans Fonts", 0, "", 0x439 },
+ { "Arial", 10, "Regular", '6' },
+ { "Arial", 0, "Bold/BoldItalic Class", 'a' },
+ /* Make horizontal stems consistent with the rest */
+ { "Arial", 24, "Bold", 's' },
+ { "Arial", 25, "Bold", 's' },
+ { "Arial", 24, "Bold", 'a' },
+ { "Arial", 25, "Bold", 'a' },
+ };
+
+
+ /* Always do DELTAP instructions if matched. */
+#define ALWAYS_DO_DELTAP_RULES_SIZE 2
+
+ SPH_TweakRule ALWAYS_DO_DELTAP_Rules
+ [ALWAYS_DO_DELTAP_RULES_SIZE] =
+ {
+ { "Verdana Clones", 17, "Regular Class", 'K' },
+ { "Verdana Clones", 17, "Regular Class", 'k' },
+ };
+
+
+ /* Do an extra RTG instruction in DELTAP if matched. */
+#define DELTAP_RTG_RULES_SIZE 1
+
+ SPH_TweakRule DELTAP_RTG_Rules
+ [DELTAP_RTG_RULES_SIZE] =
+ {
+ { "-", 0, "", 0 },
+ };
+
+
+ /* Force CVT distance to zero in MIRP. */
+#define MIRP_CVT_ZERO_RULES_SIZE 1
+
+ SPH_TweakRule MIRP_CVT_ZERO_Rules
+ [MIRP_CVT_ZERO_RULES_SIZE] =
+ {
+ { "-", 0, "", 0 },
+ };
+
+
+ /* Skip moves that meet or exceed 1 pixel. */
+#define DELTAP_SKIP_EXAGGERATED_VALUES_RULES_SIZE 1
+
+ SPH_TweakRule DELTAP_SKIP_EXAGGERATED_VALUES_Rules
+ [DELTAP_SKIP_EXAGGERATED_VALUES_RULES_SIZE] =
+ {
+ /* Fix vanishing stems */
+ { "Ubuntu", 0, "Regular", 'M' },
+ };
+
+
+ /* Don't allow ALIGNRP after IUP. */
+#define NO_ALIGNRP_AFTER_IUP_RULES_SIZE 4
+
+ SPH_TweakRule NO_ALIGNRP_AFTER_IUP_Rules
+ [NO_ALIGNRP_AFTER_IUP_RULES_SIZE] =
+ {
+ /* Prevent creation of dents in outline */
+ { "Courier New", 0, "Bold", 'C' },
+ { "Courier New", 0, "Bold", 'D' },
+ { "Courier New", 0, "Bold", 'Q' },
+ { "Courier New", 0, "Bold", '0' },
+ };
+
+
+ /* Don't allow DELTAP after IUP. */
+#define NO_DELTAP_AFTER_IUP_RULES_SIZE 2
+
+ SPH_TweakRule NO_DELTAP_AFTER_IUP_Rules
+ [NO_DELTAP_AFTER_IUP_RULES_SIZE] =
+ {
+ { "Arial", 0, "Bold", 'N' },
+ { "Verdana", 0, "Regular", '4' },
+ };
+
+
+ /* Don't allow CALL after IUP. */
+#define NO_CALL_AFTER_IUP_RULES_SIZE 4
+
+ SPH_TweakRule NO_CALL_AFTER_IUP_Rules
+ [NO_CALL_AFTER_IUP_RULES_SIZE] =
+ {
+ /* Prevent creation of dents in outline */
+ { "Courier New", 0, "Bold", 'O' },
+ { "Courier New", 0, "Bold", 'Q' },
+ { "Courier New", 0, "Bold", 'k' },
+ { "Courier New", 0, "Bold Italic", 'M' },
+ };
+
+
+ /* De-embolden these glyphs slightly. */
+#define DEEMBOLDEN_RULES_SIZE 9
+
+ SPH_TweakRule DEEMBOLDEN_Rules
+ [DEEMBOLDEN_RULES_SIZE] =
+ {
+ { "Courier New", 0, "Bold", 'A' },
+ { "Courier New", 0, "Bold", 'W' },
+ { "Courier New", 0, "Bold", 'w' },
+ { "Courier New", 0, "Bold", 'M' },
+ { "Courier New", 0, "Bold", 'X' },
+ { "Courier New", 0, "Bold", 'K' },
+ { "Courier New", 0, "Bold", 'x' },
+ { "Courier New", 0, "Bold", 'z' },
+ { "Courier New", 0, "Bold", 'v' },
+ };
+
+
+ /* Embolden these glyphs slightly. */
+#define EMBOLDEN_RULES_SIZE 5
+
+ SPH_TweakRule EMBOLDEN_Rules
+ [EMBOLDEN_RULES_SIZE] =
+ {
+ { "Courier New", 12, "Italic", 'z' },
+ { "Courier New", 11, "Italic", 'z' },
+ { "Courier New", 10, "Italic", 'z' },
+ { "Courier New", 0, "Regular", 0 },
+ { "Courier New", 0, "Italic", 0 },
+ };
+
+
+ /* Do an extra RDTG instruction in DELTAP if matched. */
+#define DELTAP_RDTG_RULES_SIZE 1
+
+ SPH_TweakRule DELTAP_RDTG_Rules
+ [DELTAP_RDTG_RULES_SIZE] =
+ {
+ { "-", 0, "", 0 },
+ };
+
+
+ /* This is a CVT hack that makes thick horizontal stems on 2, 5, 7 */
+ /* similar to Windows XP. */
+#define TIMES_NEW_ROMAN_HACK_RULES_SIZE 12
+
+ SPH_TweakRule TIMES_NEW_ROMAN_HACK_Rules
+ [TIMES_NEW_ROMAN_HACK_RULES_SIZE] =
+ {
+ { "Times New Roman", 16, "Italic", '2' },
+ { "Times New Roman", 16, "Italic", '5' },
+ { "Times New Roman", 16, "Italic", '7' },
+ { "Times New Roman", 16, "Regular", '2' },
+ { "Times New Roman", 16, "Regular", '5' },
+ { "Times New Roman", 16, "Regular", '7' },
+ { "Times New Roman", 17, "Italic", '2' },
+ { "Times New Roman", 17, "Italic", '5' },
+ { "Times New Roman", 17, "Italic", '7' },
+ { "Times New Roman", 17, "Regular", '2' },
+ { "Times New Roman", 17, "Regular", '5' },
+ { "Times New Roman", 17, "Regular", '7' },
+ };
+
+
+ /* This fudges distance on 2 to get rid of the vanishing stem issue. */
+ /* A real solution to this is certainly welcome. */
+#define COURIER_NEW_2_HACK_RULES_SIZE 15
+
+ SPH_TweakRule COURIER_NEW_2_HACK_Rules
+ [COURIER_NEW_2_HACK_RULES_SIZE] =
+ {
+ { "Courier New", 10, "Regular", '2' },
+ { "Courier New", 11, "Regular", '2' },
+ { "Courier New", 12, "Regular", '2' },
+ { "Courier New", 13, "Regular", '2' },
+ { "Courier New", 14, "Regular", '2' },
+ { "Courier New", 15, "Regular", '2' },
+ { "Courier New", 16, "Regular", '2' },
+ { "Courier New", 17, "Regular", '2' },
+ { "Courier New", 18, "Regular", '2' },
+ { "Courier New", 19, "Regular", '2' },
+ { "Courier New", 20, "Regular", '2' },
+ { "Courier New", 21, "Regular", '2' },
+ { "Courier New", 22, "Regular", '2' },
+ { "Courier New", 23, "Regular", '2' },
+ { "Courier New", 24, "Regular", '2' },
+ };
+
+
+#ifndef FORCE_NATURAL_WIDTHS
+
+ /* Use compatible widths with these glyphs. Compatible widths is always */
+ /* on when doing B/W TrueType instructing, but is used selectively here, */
+ /* typically on glyphs with 3 or more vertical stems. */
+#define COMPATIBLE_WIDTHS_RULES_SIZE 38
+
+ SPH_TweakRule COMPATIBLE_WIDTHS_Rules
+ [COMPATIBLE_WIDTHS_RULES_SIZE] =
+ {
+ { "Arial Unicode MS", 12, "Regular Class", 'm' },
+ { "Arial Unicode MS", 14, "Regular Class", 'm' },
+ /* Cyrillic small letter sha */
+ { "Arial", 10, "Regular Class", 0x448 },
+ { "Arial", 11, "Regular Class", 'm' },
+ { "Arial", 12, "Regular Class", 'm' },
+ /* Cyrillic small letter sha */
+ { "Arial", 12, "Regular Class", 0x448 },
+ { "Arial", 13, "Regular Class", 0x448 },
+ { "Arial", 14, "Regular Class", 'm' },
+ /* Cyrillic small letter sha */
+ { "Arial", 14, "Regular Class", 0x448 },
+ { "Arial", 15, "Regular Class", 0x448 },
+ { "Arial", 17, "Regular Class", 'm' },
+ { "DejaVu Sans", 15, "Regular Class", 0 },
+ { "Microsoft Sans Serif", 11, "Regular Class", 0 },
+ { "Microsoft Sans Serif", 12, "Regular Class", 0 },
+ { "Segoe UI", 11, "Regular Class", 0 },
+ { "Monaco", 0, "Regular Class", 0 },
+ { "Segoe UI", 12, "Regular Class", 'm' },
+ { "Segoe UI", 14, "Regular Class", 'm' },
+ { "Tahoma", 11, "Regular Class", 0 },
+ { "Times New Roman", 16, "Regular Class", 'c' },
+ { "Times New Roman", 16, "Regular Class", 'm' },
+ { "Times New Roman", 16, "Regular Class", 'o' },
+ { "Times New Roman", 16, "Regular Class", 'w' },
+ { "Trebuchet MS", 11, "Regular Class", 0 },
+ { "Trebuchet MS", 12, "Regular Class", 0 },
+ { "Trebuchet MS", 14, "Regular Class", 0 },
+ { "Trebuchet MS", 15, "Regular Class", 0 },
+ { "Ubuntu", 12, "Regular Class", 'm' },
+ /* Cyrillic small letter sha */
+ { "Verdana", 10, "Regular Class", 0x448 },
+ { "Verdana", 11, "Regular Class", 0x448 },
+ { "Verdana and Clones", 12, "Regular Class", 'i' },
+ { "Verdana and Clones", 12, "Regular Class", 'j' },
+ { "Verdana and Clones", 12, "Regular Class", 'l' },
+ { "Verdana and Clones", 12, "Regular Class", 'm' },
+ { "Verdana and Clones", 13, "Regular Class", 'i' },
+ { "Verdana and Clones", 13, "Regular Class", 'j' },
+ { "Verdana and Clones", 13, "Regular Class", 'l' },
+ { "Verdana and Clones", 14, "Regular Class", 'm' },
+ };
+
+
+ /* Scaling slightly in the x-direction prior to hinting results in */
+ /* more visually pleasing glyphs in certain cases. */
+ /* This sometimes needs to be coordinated with compatible width rules. */
+ /* A value of 1000 corresponds to a scaled value of 1.0. */
+#define X_SCALING_RULES_SIZE 50
+
+ SPH_ScaleRule X_SCALING_Rules
+ [X_SCALING_RULES_SIZE] =
+ {
+ { "DejaVu Sans", 12, "Regular Class", 'm', 950 },
+ { "Verdana and Clones", 12, "Regular Class", 'a', 1100 },
+ { "Verdana and Clones", 13, "Regular Class", 'a', 1050 },
+ { "Arial", 11, "Regular Class", 'm', 975 },
+ { "Arial", 12, "Regular Class", 'm', 1050 },
+ /* Cyrillic small letter el */
+ { "Arial", 13, "Regular Class", 0x43B, 950 },
+ { "Arial", 13, "Regular Class", 'o', 950 },
+ { "Arial", 13, "Regular Class", 'e', 950 },
+ { "Arial", 14, "Regular Class", 'm', 950 },
+ /* Cyrillic small letter el */
+ { "Arial", 15, "Regular Class", 0x43B, 925 },
+ { "Bitstream Vera Sans", 10, "Regular/Italic Class", 0, 1100 },
+ { "Bitstream Vera Sans", 12, "Regular/Italic Class", 0, 1050 },
+ { "Bitstream Vera Sans", 16, "Regular Class", 0, 1050 },
+ { "Bitstream Vera Sans", 9, "Regular/Italic Class", 0, 1050 },
+ { "DejaVu Sans", 12, "Regular Class", 'l', 975 },
+ { "DejaVu Sans", 12, "Regular Class", 'i', 975 },
+ { "DejaVu Sans", 12, "Regular Class", 'j', 975 },
+ { "DejaVu Sans", 13, "Regular Class", 'l', 950 },
+ { "DejaVu Sans", 13, "Regular Class", 'i', 950 },
+ { "DejaVu Sans", 13, "Regular Class", 'j', 950 },
+ { "DejaVu Sans", 10, "Regular/Italic Class", 0, 1100 },
+ { "DejaVu Sans", 12, "Regular/Italic Class", 0, 1050 },
+ { "Georgia", 10, "", 0, 1050 },
+ { "Georgia", 11, "", 0, 1100 },
+ { "Georgia", 12, "", 0, 1025 },
+ { "Georgia", 13, "", 0, 1050 },
+ { "Georgia", 16, "", 0, 1050 },
+ { "Georgia", 17, "", 0, 1030 },
+ { "Liberation Sans", 12, "Regular Class", 'm', 1100 },
+ { "Lucida Grande", 11, "Regular Class", 'm', 1100 },
+ { "Microsoft Sans Serif", 11, "Regular Class", 'm', 950 },
+ { "Microsoft Sans Serif", 12, "Regular Class", 'm', 1050 },
+ { "Segoe UI", 12, "Regular Class", 'H', 1050 },
+ { "Segoe UI", 12, "Regular Class", 'm', 1050 },
+ { "Segoe UI", 14, "Regular Class", 'm', 1050 },
+ { "Tahoma", 11, "Regular Class", 'i', 975 },
+ { "Tahoma", 11, "Regular Class", 'l', 975 },
+ { "Tahoma", 11, "Regular Class", 'j', 900 },
+ { "Tahoma", 11, "Regular Class", 'm', 918 },
+ { "Verdana", 10, "Regular/Italic Class", 0, 1100 },
+ { "Verdana", 12, "Regular Class", 'm', 975 },
+ { "Verdana", 12, "Regular/Italic Class", 0, 1050 },
+ { "Verdana", 13, "Regular/Italic Class", 'i', 950 },
+ { "Verdana", 13, "Regular/Italic Class", 'j', 950 },
+ { "Verdana", 13, "Regular/Italic Class", 'l', 950 },
+ { "Verdana", 16, "Regular Class", 0, 1050 },
+ { "Verdana", 9, "Regular/Italic Class", 0, 1050 },
+ { "Times New Roman", 16, "Regular Class", 'm', 918 },
+ { "Trebuchet MS", 11, "Regular Class", 'm', 800 },
+ { "Trebuchet MS", 12, "Regular Class", 'm', 800 },
+ };
+
+#else
+
+#define COMPATIBLE_WIDTHS_RULES_SIZE 1
+
+ SPH_TweakRule COMPATIBLE_WIDTHS_Rules
+ [COMPATIBLE_WIDTHS_RULES_SIZE] =
+ {
+ { "-", 0, "", 0 },
+ };
+
+
+#define X_SCALING_RULES_SIZE 1
+
+ SPH_ScaleRule X_SCALING_Rules
+ [X_SCALING_RULES_SIZE] =
+ {
+ { "-", 0, "", 0, 1000 },
+ };
+
+#endif /* FORCE_NATURAL_WIDTHS */
+
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
+
+FT_END_HEADER
+
+#endif /* __TTSUBPIX_H__ */
+
+/* END */