/***************************************************************************/ | |
/* */ | |
/* cffobjs.c */ | |
/* */ | |
/* OpenType objects manager (body). */ | |
/* */ | |
/* Copyright 1996-2015 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_ERRORS_H | |
#include FT_TRUETYPE_IDS_H | |
#include FT_TRUETYPE_TAGS_H | |
#include FT_INTERNAL_SFNT_H | |
#include FT_CFF_DRIVER_H | |
#include "cffobjs.h" | |
#include "cffload.h" | |
#include "cffcmap.h" | |
#include "cffpic.h" | |
#include "cfferrs.h" | |
/*************************************************************************/ | |
/* */ | |
/* The macro FT_COMPONENT is used in trace mode. It is an implicit */ | |
/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ | |
/* messages during execution. */ | |
/* */ | |
#undef FT_COMPONENT | |
#define FT_COMPONENT trace_cffobjs | |
/*************************************************************************/ | |
/* */ | |
/* SIZE FUNCTIONS */ | |
/* */ | |
/* Note that we store the global hints in the size's `internal' root */ | |
/* field. */ | |
/* */ | |
/*************************************************************************/ | |
static PSH_Globals_Funcs | |
cff_size_get_globals_funcs( CFF_Size size ) | |
{ | |
CFF_Face face = (CFF_Face)size->root.face; | |
CFF_Font font = (CFF_Font)face->extra.data; | |
PSHinter_Service pshinter = font->pshinter; | |
FT_Module module; | |
module = FT_Get_Module( size->root.face->driver->root.library, | |
"pshinter" ); | |
return ( module && pshinter && pshinter->get_globals_funcs ) | |
? pshinter->get_globals_funcs( module ) | |
: 0; | |
} | |
FT_LOCAL_DEF( void ) | |
cff_size_done( FT_Size cffsize ) /* CFF_Size */ | |
{ | |
CFF_Size size = (CFF_Size)cffsize; | |
CFF_Face face = (CFF_Face)size->root.face; | |
CFF_Font font = (CFF_Font)face->extra.data; | |
CFF_Internal internal = (CFF_Internal)cffsize->internal; | |
if ( internal ) | |
{ | |
PSH_Globals_Funcs funcs; | |
funcs = cff_size_get_globals_funcs( size ); | |
if ( funcs ) | |
{ | |
FT_UInt i; | |
funcs->destroy( internal->topfont ); | |
for ( i = font->num_subfonts; i > 0; i-- ) | |
funcs->destroy( internal->subfonts[i - 1] ); | |
} | |
/* `internal' is freed by destroy_size (in ftobjs.c) */ | |
} | |
} | |
/* CFF and Type 1 private dictionaries have slightly different */ | |
/* structures; we need to synthesize a Type 1 dictionary on the fly */ | |
static void | |
cff_make_private_dict( CFF_SubFont subfont, | |
PS_Private priv ) | |
{ | |
CFF_Private cpriv = &subfont->private_dict; | |
FT_UInt n, count; | |
FT_MEM_ZERO( priv, sizeof ( *priv ) ); | |
count = priv->num_blue_values = cpriv->num_blue_values; | |
for ( n = 0; n < count; n++ ) | |
priv->blue_values[n] = (FT_Short)cpriv->blue_values[n]; | |
count = priv->num_other_blues = cpriv->num_other_blues; | |
for ( n = 0; n < count; n++ ) | |
priv->other_blues[n] = (FT_Short)cpriv->other_blues[n]; | |
count = priv->num_family_blues = cpriv->num_family_blues; | |
for ( n = 0; n < count; n++ ) | |
priv->family_blues[n] = (FT_Short)cpriv->family_blues[n]; | |
count = priv->num_family_other_blues = cpriv->num_family_other_blues; | |
for ( n = 0; n < count; n++ ) | |
priv->family_other_blues[n] = (FT_Short)cpriv->family_other_blues[n]; | |
priv->blue_scale = cpriv->blue_scale; | |
priv->blue_shift = (FT_Int)cpriv->blue_shift; | |
priv->blue_fuzz = (FT_Int)cpriv->blue_fuzz; | |
priv->standard_width[0] = (FT_UShort)cpriv->standard_width; | |
priv->standard_height[0] = (FT_UShort)cpriv->standard_height; | |
count = priv->num_snap_widths = cpriv->num_snap_widths; | |
for ( n = 0; n < count; n++ ) | |
priv->snap_widths[n] = (FT_Short)cpriv->snap_widths[n]; | |
count = priv->num_snap_heights = cpriv->num_snap_heights; | |
for ( n = 0; n < count; n++ ) | |
priv->snap_heights[n] = (FT_Short)cpriv->snap_heights[n]; | |
priv->force_bold = cpriv->force_bold; | |
priv->language_group = cpriv->language_group; | |
priv->lenIV = cpriv->lenIV; | |
} | |
FT_LOCAL_DEF( FT_Error ) | |
cff_size_init( FT_Size cffsize ) /* CFF_Size */ | |
{ | |
CFF_Size size = (CFF_Size)cffsize; | |
FT_Error error = FT_Err_Ok; | |
PSH_Globals_Funcs funcs = cff_size_get_globals_funcs( size ); | |
if ( funcs ) | |
{ | |
CFF_Face face = (CFF_Face)cffsize->face; | |
CFF_Font font = (CFF_Font)face->extra.data; | |
CFF_Internal internal = NULL; | |
PS_PrivateRec priv; | |
FT_Memory memory = cffsize->face->memory; | |
FT_UInt i; | |
if ( FT_NEW( internal ) ) | |
goto Exit; | |
cff_make_private_dict( &font->top_font, &priv ); | |
error = funcs->create( cffsize->face->memory, &priv, | |
&internal->topfont ); | |
if ( error ) | |
goto Exit; | |
for ( i = font->num_subfonts; i > 0; i-- ) | |
{ | |
CFF_SubFont sub = font->subfonts[i - 1]; | |
cff_make_private_dict( sub, &priv ); | |
error = funcs->create( cffsize->face->memory, &priv, | |
&internal->subfonts[i - 1] ); | |
if ( error ) | |
goto Exit; | |
} | |
cffsize->internal = (FT_Size_Internal)(void*)internal; | |
} | |
size->strike_index = 0xFFFFFFFFUL; | |
Exit: | |
return error; | |
} | |
#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS | |
FT_LOCAL_DEF( FT_Error ) | |
cff_size_select( FT_Size size, | |
FT_ULong strike_index ) | |
{ | |
CFF_Size cffsize = (CFF_Size)size; | |
PSH_Globals_Funcs funcs; | |
cffsize->strike_index = strike_index; | |
FT_Select_Metrics( size->face, strike_index ); | |
funcs = cff_size_get_globals_funcs( cffsize ); | |
if ( funcs ) | |
{ | |
CFF_Face face = (CFF_Face)size->face; | |
CFF_Font font = (CFF_Font)face->extra.data; | |
CFF_Internal internal = (CFF_Internal)size->internal; | |
FT_Long top_upm = (FT_Long)font->top_font.font_dict.units_per_em; | |
FT_UInt i; | |
funcs->set_scale( internal->topfont, | |
size->metrics.x_scale, size->metrics.y_scale, | |
0, 0 ); | |
for ( i = font->num_subfonts; i > 0; i-- ) | |
{ | |
CFF_SubFont sub = font->subfonts[i - 1]; | |
FT_Long sub_upm = (FT_Long)sub->font_dict.units_per_em; | |
FT_Pos x_scale, y_scale; | |
if ( top_upm != sub_upm ) | |
{ | |
x_scale = FT_MulDiv( size->metrics.x_scale, top_upm, sub_upm ); | |
y_scale = FT_MulDiv( size->metrics.y_scale, top_upm, sub_upm ); | |
} | |
else | |
{ | |
x_scale = size->metrics.x_scale; | |
y_scale = size->metrics.y_scale; | |
} | |
funcs->set_scale( internal->subfonts[i - 1], | |
x_scale, y_scale, 0, 0 ); | |
} | |
} | |
return FT_Err_Ok; | |
} | |
#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ | |
FT_LOCAL_DEF( FT_Error ) | |
cff_size_request( FT_Size size, | |
FT_Size_Request req ) | |
{ | |
CFF_Size cffsize = (CFF_Size)size; | |
PSH_Globals_Funcs funcs; | |
#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS | |
if ( FT_HAS_FIXED_SIZES( size->face ) ) | |
{ | |
CFF_Face cffface = (CFF_Face)size->face; | |
SFNT_Service sfnt = (SFNT_Service)cffface->sfnt; | |
FT_ULong strike_index; | |
if ( sfnt->set_sbit_strike( cffface, req, &strike_index ) ) | |
cffsize->strike_index = 0xFFFFFFFFUL; | |
else | |
return cff_size_select( size, strike_index ); | |
} | |
#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ | |
FT_Request_Metrics( size->face, req ); | |
funcs = cff_size_get_globals_funcs( cffsize ); | |
if ( funcs ) | |
{ | |
CFF_Face cffface = (CFF_Face)size->face; | |
CFF_Font font = (CFF_Font)cffface->extra.data; | |
CFF_Internal internal = (CFF_Internal)size->internal; | |
FT_Long top_upm = (FT_Long)font->top_font.font_dict.units_per_em; | |
FT_UInt i; | |
funcs->set_scale( internal->topfont, | |
size->metrics.x_scale, size->metrics.y_scale, | |
0, 0 ); | |
for ( i = font->num_subfonts; i > 0; i-- ) | |
{ | |
CFF_SubFont sub = font->subfonts[i - 1]; | |
FT_Long sub_upm = (FT_Long)sub->font_dict.units_per_em; | |
FT_Pos x_scale, y_scale; | |
if ( top_upm != sub_upm ) | |
{ | |
x_scale = FT_MulDiv( size->metrics.x_scale, top_upm, sub_upm ); | |
y_scale = FT_MulDiv( size->metrics.y_scale, top_upm, sub_upm ); | |
} | |
else | |
{ | |
x_scale = size->metrics.x_scale; | |
y_scale = size->metrics.y_scale; | |
} | |
funcs->set_scale( internal->subfonts[i - 1], | |
x_scale, y_scale, 0, 0 ); | |
} | |
} | |
return FT_Err_Ok; | |
} | |
/*************************************************************************/ | |
/* */ | |
/* SLOT FUNCTIONS */ | |
/* */ | |
/*************************************************************************/ | |
FT_LOCAL_DEF( void ) | |
cff_slot_done( FT_GlyphSlot slot ) | |
{ | |
slot->internal->glyph_hints = NULL; | |
} | |
FT_LOCAL_DEF( FT_Error ) | |
cff_slot_init( FT_GlyphSlot slot ) | |
{ | |
CFF_Face face = (CFF_Face)slot->face; | |
CFF_Font font = (CFF_Font)face->extra.data; | |
PSHinter_Service pshinter = font->pshinter; | |
if ( pshinter ) | |
{ | |
FT_Module module; | |
module = FT_Get_Module( slot->face->driver->root.library, | |
"pshinter" ); | |
if ( module ) | |
{ | |
T2_Hints_Funcs funcs; | |
funcs = pshinter->get_t2_funcs( module ); | |
slot->internal->glyph_hints = (void*)funcs; | |
} | |
} | |
return FT_Err_Ok; | |
} | |
/*************************************************************************/ | |
/* */ | |
/* FACE FUNCTIONS */ | |
/* */ | |
/*************************************************************************/ | |
static FT_String* | |
cff_strcpy( FT_Memory memory, | |
const FT_String* source ) | |
{ | |
FT_Error error; | |
FT_String* result; | |
(void)FT_STRDUP( result, source ); | |
FT_UNUSED( error ); | |
return result; | |
} | |
/* Strip all subset prefixes of the form `ABCDEF+'. Usually, there */ | |
/* is only one, but font names like `APCOOG+JFABTD+FuturaBQ-Bold' */ | |
/* have been seen in the wild. */ | |
static void | |
remove_subset_prefix( FT_String* name ) | |
{ | |
FT_Int32 idx = 0; | |
FT_Int32 length = (FT_Int32)ft_strlen( name ) + 1; | |
FT_Bool continue_search = 1; | |
while ( continue_search ) | |
{ | |
if ( length >= 7 && name[6] == '+' ) | |
{ | |
for ( idx = 0; idx < 6; idx++ ) | |
{ | |
/* ASCII uppercase letters */ | |
if ( !( 'A' <= name[idx] && name[idx] <= 'Z' ) ) | |
continue_search = 0; | |
} | |
if ( continue_search ) | |
{ | |
for ( idx = 7; idx < length; idx++ ) | |
name[idx - 7] = name[idx]; | |
length -= 7; | |
} | |
} | |
else | |
continue_search = 0; | |
} | |
} | |
/* Remove the style part from the family name (if present). */ | |
static void | |
remove_style( FT_String* family_name, | |
const FT_String* style_name ) | |
{ | |
FT_Int32 family_name_length, style_name_length; | |
family_name_length = (FT_Int32)ft_strlen( family_name ); | |
style_name_length = (FT_Int32)ft_strlen( style_name ); | |
if ( family_name_length > style_name_length ) | |
{ | |
FT_Int idx; | |
for ( idx = 1; idx <= style_name_length; ++idx ) | |
{ | |
if ( family_name[family_name_length - idx] != | |
style_name[style_name_length - idx] ) | |
break; | |
} | |
if ( idx > style_name_length ) | |
{ | |
/* family_name ends with style_name; remove it */ | |
idx = family_name_length - style_name_length - 1; | |
/* also remove special characters */ | |
/* between real family name and style */ | |
while ( idx > 0 && | |
( family_name[idx] == '-' || | |
family_name[idx] == ' ' || | |
family_name[idx] == '_' || | |
family_name[idx] == '+' ) ) | |
--idx; | |
if ( idx > 0 ) | |
family_name[idx + 1] = '\0'; | |
} | |
} | |
} | |
FT_LOCAL_DEF( FT_Error ) | |
cff_face_init( FT_Stream stream, | |
FT_Face cffface, /* CFF_Face */ | |
FT_Int face_index, | |
FT_Int num_params, | |
FT_Parameter* params ) | |
{ | |
CFF_Face face = (CFF_Face)cffface; | |
FT_Error error; | |
SFNT_Service sfnt; | |
FT_Service_PsCMaps psnames; | |
PSHinter_Service pshinter; | |
FT_Bool pure_cff = 1; | |
FT_Bool sfnt_format = 0; | |
FT_Library library = cffface->driver->root.library; | |
sfnt = (SFNT_Service)FT_Get_Module_Interface( | |
library, "sfnt" ); | |
if ( !sfnt ) | |
{ | |
FT_ERROR(( "cff_face_init: cannot access `sfnt' module\n" )); | |
error = FT_THROW( Missing_Module ); | |
goto Exit; | |
} | |
FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS ); | |
pshinter = (PSHinter_Service)FT_Get_Module_Interface( | |
library, "pshinter" ); | |
FT_TRACE2(( "CFF driver\n" )); | |
/* create input stream from resource */ | |
if ( FT_STREAM_SEEK( 0 ) ) | |
goto Exit; | |
/* check whether we have a valid OpenType file */ | |
error = sfnt->init_face( stream, face, face_index, num_params, params ); | |
if ( !error ) | |
{ | |
if ( face->format_tag != TTAG_OTTO ) /* `OTTO'; OpenType/CFF font */ | |
{ | |
FT_TRACE2(( " not an OpenType/CFF font\n" )); | |
error = FT_THROW( Unknown_File_Format ); | |
goto Exit; | |
} | |
/* if we are performing a simple font format check, exit immediately */ | |
if ( face_index < 0 ) | |
return FT_Err_Ok; | |
sfnt_format = 1; | |
/* now, the font can be either an OpenType/CFF font, or an SVG CEF */ | |
/* font; in the latter case it doesn't have a `head' table */ | |
error = face->goto_table( face, TTAG_head, stream, 0 ); | |
if ( !error ) | |
{ | |
pure_cff = 0; | |
/* load font directory */ | |
error = sfnt->load_face( stream, face, face_index, | |
num_params, params ); | |
if ( error ) | |
goto Exit; | |
} | |
else | |
{ | |
/* load the `cmap' table explicitly */ | |
error = sfnt->load_cmap( face, stream ); | |
if ( error ) | |
goto Exit; | |
} | |
/* now load the CFF part of the file */ | |
error = face->goto_table( face, TTAG_CFF, stream, 0 ); | |
if ( error ) | |
goto Exit; | |
} | |
else | |
{ | |
/* rewind to start of file; we are going to load a pure-CFF font */ | |
if ( FT_STREAM_SEEK( 0 ) ) | |
goto Exit; | |
error = FT_Err_Ok; | |
} | |
/* now load and parse the CFF table in the file */ | |
{ | |
CFF_Font cff = NULL; | |
CFF_FontRecDict dict; | |
FT_Memory memory = cffface->memory; | |
FT_Int32 flags; | |
FT_UInt i; | |
if ( FT_NEW( cff ) ) | |
goto Exit; | |
face->extra.data = cff; | |
error = cff_font_load( library, stream, face_index, cff, pure_cff ); | |
if ( error ) | |
goto Exit; | |
/* if we are performing a simple font format check, exit immediately */ | |
/* (this is here for pure CFF) */ | |
if ( face_index < 0 ) | |
return FT_Err_Ok; | |
cff->pshinter = pshinter; | |
cff->psnames = psnames; | |
cffface->face_index = face_index & 0xFFFF; | |
/* Complement the root flags with some interesting information. */ | |
/* Note that this is only necessary for pure CFF and CEF fonts; */ | |
/* SFNT based fonts use the `name' table instead. */ | |
cffface->num_glyphs = (FT_Long)cff->num_glyphs; | |
dict = &cff->top_font.font_dict; | |
/* we need the `PSNames' module for CFF and CEF formats */ | |
/* which aren't CID-keyed */ | |
if ( dict->cid_registry == 0xFFFFU && !psnames ) | |
{ | |
FT_ERROR(( "cff_face_init:" | |
" cannot open CFF & CEF fonts\n" | |
" " | |
" without the `PSNames' module\n" )); | |
error = FT_THROW( Missing_Module ); | |
goto Exit; | |
} | |
#ifdef FT_DEBUG_LEVEL_TRACE | |
{ | |
FT_UInt idx; | |
FT_String* s; | |
FT_TRACE4(( "SIDs\n" )); | |
/* dump string index, including default strings for convenience */ | |
for ( idx = 0; idx < cff->num_strings + 390; idx++ ) | |
{ | |
s = cff_index_get_sid_string( cff, idx ); | |
if ( s ) | |
FT_TRACE4((" %5d %s\n", idx, s )); | |
} | |
} | |
#endif /* FT_DEBUG_LEVEL_TRACE */ | |
if ( !dict->has_font_matrix ) | |
dict->units_per_em = pure_cff ? 1000 : face->root.units_per_EM; | |
/* Normalize the font matrix so that `matrix->yy' is 1; the */ | |
/* scaling is done with `units_per_em' then (at this point, */ | |
/* it already contains the scaling factor, but without */ | |
/* normalization of the matrix). */ | |
/* */ | |
/* Note that the offsets must be expressed in integer font */ | |
/* units. */ | |
{ | |
FT_Matrix* matrix = &dict->font_matrix; | |
FT_Vector* offset = &dict->font_offset; | |
FT_ULong* upm = &dict->units_per_em; | |
FT_Fixed temp = FT_ABS( matrix->yy ); | |
if ( temp != 0x10000L ) | |
{ | |
*upm = (FT_ULong)FT_DivFix( (FT_Long)*upm, temp ); | |
matrix->xx = FT_DivFix( matrix->xx, temp ); | |
matrix->yx = FT_DivFix( matrix->yx, temp ); | |
matrix->xy = FT_DivFix( matrix->xy, temp ); | |
matrix->yy = FT_DivFix( matrix->yy, temp ); | |
offset->x = FT_DivFix( offset->x, temp ); | |
offset->y = FT_DivFix( offset->y, temp ); | |
} | |
offset->x >>= 16; | |
offset->y >>= 16; | |
} | |
for ( i = cff->num_subfonts; i > 0; i-- ) | |
{ | |
CFF_FontRecDict sub = &cff->subfonts[i - 1]->font_dict; | |
CFF_FontRecDict top = &cff->top_font.font_dict; | |
FT_Matrix* matrix; | |
FT_Vector* offset; | |
FT_ULong* upm; | |
FT_Fixed temp; | |
if ( sub->has_font_matrix ) | |
{ | |
FT_Long scaling; | |
/* if we have a top-level matrix, */ | |
/* concatenate the subfont matrix */ | |
if ( top->has_font_matrix ) | |
{ | |
if ( top->units_per_em > 1 && sub->units_per_em > 1 ) | |
scaling = (FT_Long)FT_MIN( top->units_per_em, | |
sub->units_per_em ); | |
else | |
scaling = 1; | |
FT_Matrix_Multiply_Scaled( &top->font_matrix, | |
&sub->font_matrix, | |
scaling ); | |
FT_Vector_Transform_Scaled( &sub->font_offset, | |
&top->font_matrix, | |
scaling ); | |
sub->units_per_em = (FT_ULong) | |
FT_MulDiv( (FT_Long)sub->units_per_em, | |
(FT_Long)top->units_per_em, | |
scaling ); | |
} | |
} | |
else | |
{ | |
sub->font_matrix = top->font_matrix; | |
sub->font_offset = top->font_offset; | |
sub->units_per_em = top->units_per_em; | |
} | |
matrix = &sub->font_matrix; | |
offset = &sub->font_offset; | |
upm = &sub->units_per_em; | |
temp = FT_ABS( matrix->yy ); | |
if ( temp != 0x10000L ) | |
{ | |
*upm = (FT_ULong)FT_DivFix( (FT_Long)*upm, temp ); | |
matrix->xx = FT_DivFix( matrix->xx, temp ); | |
matrix->yx = FT_DivFix( matrix->yx, temp ); | |
matrix->xy = FT_DivFix( matrix->xy, temp ); | |
matrix->yy = FT_DivFix( matrix->yy, temp ); | |
offset->x = FT_DivFix( offset->x, temp ); | |
offset->y = FT_DivFix( offset->y, temp ); | |
} | |
offset->x >>= 16; | |
offset->y >>= 16; | |
} | |
if ( pure_cff ) | |
{ | |
char* style_name = NULL; | |
/* set up num_faces */ | |
cffface->num_faces = (FT_Long)cff->num_faces; | |
/* compute number of glyphs */ | |
if ( dict->cid_registry != 0xFFFFU ) | |
cffface->num_glyphs = (FT_Long)( cff->charset.max_cid + 1 ); | |
else | |
cffface->num_glyphs = (FT_Long)cff->charstrings_index.count; | |
/* set global bbox, as well as EM size */ | |
cffface->bbox.xMin = dict->font_bbox.xMin >> 16; | |
cffface->bbox.yMin = dict->font_bbox.yMin >> 16; | |
/* no `U' suffix here to 0xFFFF! */ | |
cffface->bbox.xMax = ( dict->font_bbox.xMax + 0xFFFF ) >> 16; | |
cffface->bbox.yMax = ( dict->font_bbox.yMax + 0xFFFF ) >> 16; | |
cffface->units_per_EM = (FT_UShort)( dict->units_per_em ); | |
cffface->ascender = (FT_Short)( cffface->bbox.yMax ); | |
cffface->descender = (FT_Short)( cffface->bbox.yMin ); | |
cffface->height = (FT_Short)( ( cffface->units_per_EM * 12 ) / 10 ); | |
if ( cffface->height < cffface->ascender - cffface->descender ) | |
cffface->height = (FT_Short)( cffface->ascender - cffface->descender ); | |
cffface->underline_position = | |
(FT_Short)( dict->underline_position >> 16 ); | |
cffface->underline_thickness = | |
(FT_Short)( dict->underline_thickness >> 16 ); | |
/* retrieve font family & style name */ | |
cffface->family_name = cff_index_get_name( | |
cff, | |
(FT_UInt)( face_index & 0xFFFF ) ); | |
if ( cffface->family_name ) | |
{ | |
char* full = cff_index_get_sid_string( cff, | |
dict->full_name ); | |
char* fullp = full; | |
char* family = cffface->family_name; | |
char* family_name = NULL; | |
remove_subset_prefix( cffface->family_name ); | |
if ( dict->family_name ) | |
{ | |
family_name = cff_index_get_sid_string( cff, | |
dict->family_name ); | |
if ( family_name ) | |
family = family_name; | |
} | |
/* We try to extract the style name from the full name. */ | |
/* We need to ignore spaces and dashes during the search. */ | |
if ( full && family ) | |
{ | |
while ( *fullp ) | |
{ | |
/* skip common characters at the start of both strings */ | |
if ( *fullp == *family ) | |
{ | |
family++; | |
fullp++; | |
continue; | |
} | |
/* ignore spaces and dashes in full name during comparison */ | |
if ( *fullp == ' ' || *fullp == '-' ) | |
{ | |
fullp++; | |
continue; | |
} | |
/* ignore spaces and dashes in family name during comparison */ | |
if ( *family == ' ' || *family == '-' ) | |
{ | |
family++; | |
continue; | |
} | |
if ( !*family && *fullp ) | |
{ | |
/* The full name begins with the same characters as the */ | |
/* family name, with spaces and dashes removed. In this */ | |
/* case, the remaining string in `fullp' will be used as */ | |
/* the style name. */ | |
style_name = cff_strcpy( memory, fullp ); | |
/* remove the style part from the family name (if present) */ | |
remove_style( cffface->family_name, style_name ); | |
} | |
break; | |
} | |
} | |
} | |
else | |
{ | |
char *cid_font_name = | |
cff_index_get_sid_string( cff, | |
dict->cid_font_name ); | |
/* do we have a `/FontName' for a CID-keyed font? */ | |
if ( cid_font_name ) | |
cffface->family_name = cff_strcpy( memory, cid_font_name ); | |
} | |
if ( style_name ) | |
cffface->style_name = style_name; | |
else | |
/* assume "Regular" style if we don't know better */ | |
cffface->style_name = cff_strcpy( memory, (char *)"Regular" ); | |
/*******************************************************************/ | |
/* */ | |
/* Compute face flags. */ | |
/* */ | |
flags = FT_FACE_FLAG_SCALABLE | /* scalable outlines */ | |
FT_FACE_FLAG_HORIZONTAL | /* horizontal data */ | |
FT_FACE_FLAG_HINTER; /* has native hinter */ | |
if ( sfnt_format ) | |
flags |= FT_FACE_FLAG_SFNT; | |
/* fixed width font? */ | |
if ( dict->is_fixed_pitch ) | |
flags |= FT_FACE_FLAG_FIXED_WIDTH; | |
/* XXX: WE DO NOT SUPPORT KERNING METRICS IN THE GPOS TABLE FOR NOW */ | |
#if 0 | |
/* kerning available? */ | |
if ( face->kern_pairs ) | |
flags |= FT_FACE_FLAG_KERNING; | |
#endif | |
cffface->face_flags |= flags; | |
/*******************************************************************/ | |
/* */ | |
/* Compute style flags. */ | |
/* */ | |
flags = 0; | |
if ( dict->italic_angle ) | |
flags |= FT_STYLE_FLAG_ITALIC; | |
{ | |
char *weight = cff_index_get_sid_string( cff, | |
dict->weight ); | |
if ( weight ) | |
if ( !ft_strcmp( weight, "Bold" ) || | |
!ft_strcmp( weight, "Black" ) ) | |
flags |= FT_STYLE_FLAG_BOLD; | |
} | |
/* double check */ | |
if ( !(flags & FT_STYLE_FLAG_BOLD) && cffface->style_name ) | |
if ( !ft_strncmp( cffface->style_name, "Bold", 4 ) || | |
!ft_strncmp( cffface->style_name, "Black", 5 ) ) | |
flags |= FT_STYLE_FLAG_BOLD; | |
cffface->style_flags = flags; | |
} | |
#ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES | |
/* CID-keyed CFF fonts don't have glyph names -- the SFNT loader */ | |
/* has unset this flag because of the 3.0 `post' table. */ | |
if ( dict->cid_registry == 0xFFFFU ) | |
cffface->face_flags |= FT_FACE_FLAG_GLYPH_NAMES; | |
#endif | |
if ( dict->cid_registry != 0xFFFFU && pure_cff ) | |
cffface->face_flags |= FT_FACE_FLAG_CID_KEYED; | |
/*******************************************************************/ | |
/* */ | |
/* Compute char maps. */ | |
/* */ | |
/* Try to synthesize a Unicode charmap if there is none available */ | |
/* already. If an OpenType font contains a Unicode "cmap", we */ | |
/* will use it, whatever be in the CFF part of the file. */ | |
{ | |
FT_CharMapRec cmaprec; | |
FT_CharMap cmap; | |
FT_UInt nn; | |
CFF_Encoding encoding = &cff->encoding; | |
for ( nn = 0; nn < (FT_UInt)cffface->num_charmaps; nn++ ) | |
{ | |
cmap = cffface->charmaps[nn]; | |
/* Windows Unicode? */ | |
if ( cmap->platform_id == TT_PLATFORM_MICROSOFT && | |
cmap->encoding_id == TT_MS_ID_UNICODE_CS ) | |
goto Skip_Unicode; | |
/* Apple Unicode platform id? */ | |
if ( cmap->platform_id == TT_PLATFORM_APPLE_UNICODE ) | |
goto Skip_Unicode; /* Apple Unicode */ | |
} | |
/* since CID-keyed fonts don't contain glyph names, we can't */ | |
/* construct a cmap */ | |
if ( pure_cff && cff->top_font.font_dict.cid_registry != 0xFFFFU ) | |
goto Exit; | |
/* we didn't find a Unicode charmap -- synthesize one */ | |
cmaprec.face = cffface; | |
cmaprec.platform_id = TT_PLATFORM_MICROSOFT; | |
cmaprec.encoding_id = TT_MS_ID_UNICODE_CS; | |
cmaprec.encoding = FT_ENCODING_UNICODE; | |
nn = (FT_UInt)cffface->num_charmaps; | |
error = FT_CMap_New( &CFF_CMAP_UNICODE_CLASS_REC_GET, NULL, | |
&cmaprec, NULL ); | |
if ( error && | |
FT_ERR_NEQ( error, No_Unicode_Glyph_Name ) ) | |
goto Exit; | |
error = FT_Err_Ok; | |
/* if no Unicode charmap was previously selected, select this one */ | |
if ( cffface->charmap == NULL && nn != (FT_UInt)cffface->num_charmaps ) | |
cffface->charmap = cffface->charmaps[nn]; | |
Skip_Unicode: | |
if ( encoding->count > 0 ) | |
{ | |
FT_CMap_Class clazz; | |
cmaprec.face = cffface; | |
cmaprec.platform_id = TT_PLATFORM_ADOBE; /* Adobe platform id */ | |
if ( encoding->offset == 0 ) | |
{ | |
cmaprec.encoding_id = TT_ADOBE_ID_STANDARD; | |
cmaprec.encoding = FT_ENCODING_ADOBE_STANDARD; | |
clazz = &CFF_CMAP_ENCODING_CLASS_REC_GET; | |
} | |
else if ( encoding->offset == 1 ) | |
{ | |
cmaprec.encoding_id = TT_ADOBE_ID_EXPERT; | |
cmaprec.encoding = FT_ENCODING_ADOBE_EXPERT; | |
clazz = &CFF_CMAP_ENCODING_CLASS_REC_GET; | |
} | |
else | |
{ | |
cmaprec.encoding_id = TT_ADOBE_ID_CUSTOM; | |
cmaprec.encoding = FT_ENCODING_ADOBE_CUSTOM; | |
clazz = &CFF_CMAP_ENCODING_CLASS_REC_GET; | |
} | |
error = FT_CMap_New( clazz, NULL, &cmaprec, NULL ); | |
} | |
} | |
} | |
Exit: | |
return error; | |
} | |
FT_LOCAL_DEF( void ) | |
cff_face_done( FT_Face cffface ) /* CFF_Face */ | |
{ | |
CFF_Face face = (CFF_Face)cffface; | |
FT_Memory memory; | |
SFNT_Service sfnt; | |
if ( !face ) | |
return; | |
memory = cffface->memory; | |
sfnt = (SFNT_Service)face->sfnt; | |
if ( sfnt ) | |
sfnt->done_face( face ); | |
{ | |
CFF_Font cff = (CFF_Font)face->extra.data; | |
if ( cff ) | |
{ | |
cff_font_done( cff ); | |
FT_FREE( face->extra.data ); | |
} | |
} | |
} | |
FT_LOCAL_DEF( FT_Error ) | |
cff_driver_init( FT_Module module ) /* CFF_Driver */ | |
{ | |
CFF_Driver driver = (CFF_Driver)module; | |
/* set default property values, cf. `ftcffdrv.h' */ | |
#ifdef CFF_CONFIG_OPTION_OLD_ENGINE | |
driver->hinting_engine = FT_CFF_HINTING_FREETYPE; | |
#else | |
driver->hinting_engine = FT_CFF_HINTING_ADOBE; | |
#endif | |
driver->no_stem_darkening = TRUE; | |
driver->darken_params[0] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1; | |
driver->darken_params[1] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1; | |
driver->darken_params[2] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2; | |
driver->darken_params[3] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2; | |
driver->darken_params[4] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3; | |
driver->darken_params[5] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3; | |
driver->darken_params[6] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4; | |
driver->darken_params[7] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4; | |
return FT_Err_Ok; | |
} | |
FT_LOCAL_DEF( void ) | |
cff_driver_done( FT_Module module ) /* CFF_Driver */ | |
{ | |
FT_UNUSED( module ); | |
} | |
/* END */ |