Hash :
edf40148
Author :
Date :
2016-12-15T21:56:44
[cff] Implement CFF2 support (2/2). The font variation code. All parts dependent on the GX code in the `truetype' module are guarded with TT_CONFIG_OPTION_GX_VAR_SUPPORT. In other words, you can still compile the `cff' module without defining TT_CONFIG_OPTION_GX_VAR_SUPPORT (which brings you CFF2 support without font variation). * src/cff/cf2font.c (cf2_font_setup): Add support for font variation. * src/cff/cf2font.h (CF2_Font): Add fields for variation data. * src/cff/cf2ft.c (cf2_free_instance): Free blend data. (cf2_getVStore, cf2_getNormalizedVector): New functions. * src/cff/cf2ft.h: Updated. * src/cff/cf2intrp.c: Include `cffload.h'. (cf2_cmdRESERVED_15, cf2_cmdRESERVED_16): Replace with... (cf2_cmdVSINDEX, cf2_cmdBLEND): ... this new enum values. (cf2_doBlend): New function. (cf2_interpT2CharString): Handle `vsindex' and `blend' opcodes. * src/cff/cffload.c (FT_fdot14ToFixed): New macro. (cff_vstore_done, cff_vstore_load): New functions. (cff_blend_clear, cff_blend_doBlend, cff_blend_build_vector, cff_blend_check_vector): New functions. (cff_load_private_dict): Add arguments for blend vector. Handle blend data. (cff_subfont_load, cff_subfont_done): Updated. (cff_font_load): Handle CFF2 variation store data. (cff_font_done): Updated. * src/cff/cffload.h: Include `cffparse.h'. Updated. * src/cff/cffobjs.c (cff_face_done): Updated. * src/cff/cffparse.c: Include `cffload.h'. (cff_parse_num): Handle internal value 255. (cff_parse_vsindex, cff_parse_blend): New functions. (CFF_FIELD_BLEND): New macro. (cff_parser_run): Updated. * src/cff/cffparse.h (cff_kind_blend): New enum value. * src/cff/cfftoken.h: Handle `vstore', `vsindex', and `blend' dictionary values. * src/cff/cfftypes.h (CFF_VarData, CFF_AxisCoords, CFF_VarRegion, CFF_VStore, CFF_Blend): New structures. (CFF_FontRecDict): Add `vstore_offset' field. (CFF_Private): Add `vsindex' field. (CFF_SubFont): Add fields for blend data. (CFF_Font): Add `vstore' field. * src/truetype/ttgxvar.c (TT_Get_MM_Var): `CFF2' is equal to `gvar', since glyph variation data is directly embedded. (TT_Set_MM_Blend): Don't load `gvar' table for CFF2 fonts.
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/***************************************************************************/
/* */
/* cf2ft.h */
/* */
/* FreeType Glue Component to Adobe's Interpreter (specification). */
/* */
/* Copyright 2013 Adobe Systems Incorporated. */
/* */
/* This software, and all works of authorship, whether in source or */
/* object code form as indicated by the copyright notice(s) included */
/* herein (collectively, the "Work") is made available, and may only be */
/* used, modified, and distributed under the FreeType Project License, */
/* LICENSE.TXT. Additionally, subject to the terms and conditions of the */
/* FreeType Project License, each contributor to the Work hereby grants */
/* to any individual or legal entity exercising permissions granted by */
/* the FreeType Project License and this section (hereafter, "You" or */
/* "Your") a perpetual, worldwide, non-exclusive, no-charge, */
/* royalty-free, irrevocable (except as stated in this section) patent */
/* license to make, have made, use, offer to sell, sell, import, and */
/* otherwise transfer the Work, where such license applies only to those */
/* patent claims licensable by such contributor that are necessarily */
/* infringed by their contribution(s) alone or by combination of their */
/* contribution(s) with the Work to which such contribution(s) was */
/* submitted. If You institute patent litigation against any entity */
/* (including a cross-claim or counterclaim in a lawsuit) alleging that */
/* the Work or a contribution incorporated within the Work constitutes */
/* direct or contributory patent infringement, then any patent licenses */
/* granted to You under this License for that Work shall terminate as of */
/* the date such litigation is filed. */
/* */
/* By using, modifying, or distributing the Work you indicate that you */
/* have read and understood the terms and conditions of the */
/* FreeType Project License as well as those provided in this section, */
/* and you accept them fully. */
/* */
/***************************************************************************/
#ifndef CF2FT_H_
#define CF2FT_H_
#include "cf2types.h"
/* TODO: disable asserts for now */
#define CF2_NDEBUG
#include FT_SYSTEM_H
#include "cf2glue.h"
#include "cffgload.h" /* for CFF_Decoder */
FT_BEGIN_HEADER
FT_LOCAL( FT_Error )
cf2_decoder_parse_charstrings( CFF_Decoder* decoder,
FT_Byte* charstring_base,
FT_ULong charstring_len );
FT_LOCAL( CFF_SubFont )
cf2_getSubfont( CFF_Decoder* decoder );
FT_LOCAL( CFF_VStore )
cf2_getVStore( CFF_Decoder* decoder );
FT_LOCAL( FT_UInt )
cf2_getMaxstack( CFF_Decoder* decoder );
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
FT_LOCAL( FT_Error )
cf2_getNormalizedVector( CFF_Decoder* decoder,
CF2_UInt *len,
FT_Fixed* *vec );
#endif
FT_LOCAL( CF2_Fixed )
cf2_getPpemY( CFF_Decoder* decoder );
FT_LOCAL( CF2_Fixed )
cf2_getStdVW( CFF_Decoder* decoder );
FT_LOCAL( CF2_Fixed )
cf2_getStdHW( CFF_Decoder* decoder );
FT_LOCAL( void )
cf2_getBlueMetrics( CFF_Decoder* decoder,
CF2_Fixed* blueScale,
CF2_Fixed* blueShift,
CF2_Fixed* blueFuzz );
FT_LOCAL( void )
cf2_getBlueValues( CFF_Decoder* decoder,
size_t* count,
FT_Pos* *data );
FT_LOCAL( void )
cf2_getOtherBlues( CFF_Decoder* decoder,
size_t* count,
FT_Pos* *data );
FT_LOCAL( void )
cf2_getFamilyBlues( CFF_Decoder* decoder,
size_t* count,
FT_Pos* *data );
FT_LOCAL( void )
cf2_getFamilyOtherBlues( CFF_Decoder* decoder,
size_t* count,
FT_Pos* *data );
FT_LOCAL( CF2_Int )
cf2_getLanguageGroup( CFF_Decoder* decoder );
FT_LOCAL( CF2_Int )
cf2_initGlobalRegionBuffer( CFF_Decoder* decoder,
CF2_Int subrNum,
CF2_Buffer buf );
FT_LOCAL( FT_Error )
cf2_getSeacComponent( CFF_Decoder* decoder,
CF2_Int code,
CF2_Buffer buf );
FT_LOCAL( void )
cf2_freeSeacComponent( CFF_Decoder* decoder,
CF2_Buffer buf );
FT_LOCAL( CF2_Int )
cf2_initLocalRegionBuffer( CFF_Decoder* decoder,
CF2_Int subrNum,
CF2_Buffer buf );
FT_LOCAL( CF2_Fixed )
cf2_getDefaultWidthX( CFF_Decoder* decoder );
FT_LOCAL( CF2_Fixed )
cf2_getNominalWidthX( CFF_Decoder* decoder );
/*
* FreeType client outline
*
* process output from the charstring interpreter
*/
typedef struct CF2_OutlineRec_
{
CF2_OutlineCallbacksRec root; /* base class must be first */
CFF_Decoder* decoder;
} CF2_OutlineRec, *CF2_Outline;
FT_LOCAL( void )
cf2_outline_reset( CF2_Outline outline );
FT_LOCAL( void )
cf2_outline_close( CF2_Outline outline );
FT_END_HEADER
#endif /* CF2FT_H_ */
/* END */