ref: 6875093a178c0dffc98e249006094e7a7b0a518d
dir: /src/truetype/ttsubpix.h/
/***************************************************************************/
/* */
/* ttsubpix.h */
/* */
/* TrueType Subpixel Hinting. */
/* */
/* Copyright 2010-2016 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
/*************************************************************************/
/* */
/* ID flags to identify special functions at FDEF and runtime. */
/* */
/* */
#define SPH_FDEF_INLINE_DELTA_1 0x0000001
#define SPH_FDEF_INLINE_DELTA_2 0x0000002
#define SPH_FDEF_DIAGONAL_STROKE 0x0000004
#define SPH_FDEF_VACUFORM_ROUND_1 0x0000008
#define SPH_FDEF_TTFAUTOHINT_1 0x0000010
#define SPH_FDEF_SPACING_1 0x0000020
#define SPH_FDEF_SPACING_2 0x0000040
#define SPH_FDEF_TYPEMAN_STROKES 0x0000080
#define SPH_FDEF_TYPEMAN_DIAGENDCTRL 0x0000100
/*************************************************************************/
/* */
/* Tweak flags that are set for each glyph by the below rules. */
/* */
/* */
#define SPH_TWEAK_ALLOW_X_DMOVE 0x0000001UL
#define SPH_TWEAK_ALWAYS_DO_DELTAP 0x0000002UL
#define SPH_TWEAK_ALWAYS_SKIP_DELTAP 0x0000004UL
#define SPH_TWEAK_COURIER_NEW_2_HACK 0x0000008UL
#define SPH_TWEAK_DEEMBOLDEN 0x0000010UL
#define SPH_TWEAK_DO_SHPIX 0x0000020UL
#define SPH_TWEAK_EMBOLDEN 0x0000040UL
#define SPH_TWEAK_MIAP_HACK 0x0000080UL
#define SPH_TWEAK_NORMAL_ROUND 0x0000100UL
#define SPH_TWEAK_NO_ALIGNRP_AFTER_IUP 0x0000200UL
#define SPH_TWEAK_NO_CALL_AFTER_IUP 0x0000400UL
#define SPH_TWEAK_NO_DELTAP_AFTER_IUP 0x0000800UL
#define SPH_TWEAK_PIXEL_HINTING 0x0001000UL
#define SPH_TWEAK_RASTERIZER_35 0x0002000UL
#define SPH_TWEAK_ROUND_NONPIXEL_Y_MOVES 0x0004000UL
#define SPH_TWEAK_SKIP_IUP 0x0008000UL
#define SPH_TWEAK_SKIP_NONPIXEL_Y_MOVES 0x0010000UL
#define SPH_TWEAK_SKIP_OFFPIXEL_Y_MOVES 0x0020000UL
#define SPH_TWEAK_TIMES_NEW_ROMAN_HACK 0x0040000UL
#define SPH_TWEAK_SKIP_NONPIXEL_Y_MOVES_DELTAP 0x0080000UL
FT_LOCAL( FT_Bool )
sph_test_tweak( TT_Face face,
const FT_String* family,
FT_UInt ppem,
const FT_String* style,
FT_UInt glyph_index,
const SPH_TweakRule* rule,
FT_UInt num_rules );
FT_LOCAL( FT_UInt )
sph_test_tweak_x_scaling( TT_Face face,
const FT_String* family,
FT_UInt ppem,
const FT_String* style,
FT_UInt glyph_index );
FT_LOCAL( void )
sph_set_tweaks( TT_Loader loader,
FT_UInt glyph_index );
/* 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
#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
FT_END_HEADER
#endif /* TTSUBPIX_H_ */
/* END */