111 lines
4.9 KiB
C
111 lines
4.9 KiB
C
/***************************************************************************/
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/* */
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/* ttsubpix.h */
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/* */
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/* TrueType Subpixel Hinting. */
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/* */
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/* Copyright 2010-2015 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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#ifndef __TTSUBPIX_H__
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#define __TTSUBPIX_H__
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#include <ft2build.h>
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#include "ttobjs.h"
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#include "ttinterp.h"
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FT_BEGIN_HEADER
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#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
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/*************************************************************************/
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/* */
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/* ID flags to identify special functions at FDEF and runtime. */
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/* */
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/* */
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#define SPH_FDEF_INLINE_DELTA_1 0x0000001
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#define SPH_FDEF_INLINE_DELTA_2 0x0000002
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#define SPH_FDEF_DIAGONAL_STROKE 0x0000004
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#define SPH_FDEF_VACUFORM_ROUND_1 0x0000008
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#define SPH_FDEF_TTFAUTOHINT_1 0x0000010
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#define SPH_FDEF_SPACING_1 0x0000020
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#define SPH_FDEF_SPACING_2 0x0000040
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#define SPH_FDEF_TYPEMAN_STROKES 0x0000080
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#define SPH_FDEF_TYPEMAN_DIAGENDCTRL 0x0000100
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/*************************************************************************/
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/* */
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/* Tweak flags that are set for each glyph by the below rules. */
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/* */
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/* */
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#define SPH_TWEAK_ALLOW_X_DMOVE 0x0000001UL
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#define SPH_TWEAK_ALWAYS_DO_DELTAP 0x0000002UL
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#define SPH_TWEAK_ALWAYS_SKIP_DELTAP 0x0000004UL
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#define SPH_TWEAK_COURIER_NEW_2_HACK 0x0000008UL
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#define SPH_TWEAK_DEEMBOLDEN 0x0000010UL
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#define SPH_TWEAK_DO_SHPIX 0x0000020UL
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#define SPH_TWEAK_EMBOLDEN 0x0000040UL
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#define SPH_TWEAK_MIAP_HACK 0x0000080UL
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#define SPH_TWEAK_NORMAL_ROUND 0x0000100UL
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#define SPH_TWEAK_NO_ALIGNRP_AFTER_IUP 0x0000200UL
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#define SPH_TWEAK_NO_CALL_AFTER_IUP 0x0000400UL
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#define SPH_TWEAK_NO_DELTAP_AFTER_IUP 0x0000800UL
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#define SPH_TWEAK_PIXEL_HINTING 0x0001000UL
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#define SPH_TWEAK_RASTERIZER_35 0x0002000UL
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#define SPH_TWEAK_ROUND_NONPIXEL_Y_MOVES 0x0004000UL
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#define SPH_TWEAK_SKIP_IUP 0x0008000UL
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#define SPH_TWEAK_SKIP_NONPIXEL_Y_MOVES 0x0010000UL
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#define SPH_TWEAK_SKIP_OFFPIXEL_Y_MOVES 0x0020000UL
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#define SPH_TWEAK_TIMES_NEW_ROMAN_HACK 0x0040000UL
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#define SPH_TWEAK_SKIP_NONPIXEL_Y_MOVES_DELTAP 0x0080000UL
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FT_LOCAL( FT_Bool )
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sph_test_tweak( TT_Face face,
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const FT_String* family,
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FT_UInt ppem,
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const FT_String* style,
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FT_UInt glyph_index,
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const SPH_TweakRule* rule,
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FT_UInt num_rules );
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FT_LOCAL( FT_UInt )
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sph_test_tweak_x_scaling( TT_Face face,
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const FT_String* family,
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FT_UInt ppem,
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const FT_String* style,
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FT_UInt glyph_index );
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FT_LOCAL( void )
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sph_set_tweaks( TT_Loader loader,
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FT_UInt glyph_index );
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/* These macros are defined absent a method for setting them */
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#define SPH_OPTION_BITMAP_WIDTHS FALSE
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#define SPH_OPTION_SET_SUBPIXEL TRUE
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#define SPH_OPTION_SET_GRAYSCALE FALSE
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#define SPH_OPTION_SET_COMPATIBLE_WIDTHS FALSE
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#define SPH_OPTION_SET_RASTERIZER_VERSION 38
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#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
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FT_END_HEADER
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#endif /* __TTSUBPIX_H__ */
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/* END */
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