898 lines
29 KiB
C
898 lines
29 KiB
C
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/***************************************************************************/
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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 2010-2012 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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/* 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 0x0000001
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#define SPH_TWEAK_ALLOW_X_DMOVEX 0x0000002
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#define SPH_TWEAK_ALLOW_X_MOVE_ZP2 0x0000004
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#define SPH_TWEAK_ALWAYS_DO_DELTAP 0x0000008
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#define SPH_TWEAK_ALWAYS_SKIP_DELTAP 0x0000010
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#define SPH_TWEAK_COURIER_NEW_2_HACK 0x0000020
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#define SPH_TWEAK_DEEMBOLDEN 0x0000040
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#define SPH_TWEAK_DELTAP_SKIP_EXAGGERATED_VALUES 0x0000080
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#define SPH_TWEAK_DO_SHPIX 0x0000100
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#define SPH_TWEAK_EMBOLDEN 0x0000200
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#define SPH_TWEAK_MIAP_HACK 0x0000400
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#define SPH_TWEAK_NORMAL_ROUND 0x0000800
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#define SPH_TWEAK_NO_ALIGNRP_AFTER_IUP 0x0001000
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#define SPH_TWEAK_NO_CALL_AFTER_IUP 0x0002000
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#define SPH_TWEAK_NO_DELTAP_AFTER_IUP 0x0004000
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#define SPH_TWEAK_PIXEL_HINTING 0x0008000
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#define SPH_TWEAK_RASTERIZER_35 0x0010000
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#define SPH_TWEAK_ROUND_NONPIXEL_Y_MOVES 0x0020000
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#define SPH_TWEAK_SKIP_INLINE_DELTAS 0x0040000
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#define SPH_TWEAK_SKIP_IUP 0x0080000
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#define SPH_TWEAK_SKIP_NONPIXEL_Y_MOVES 0x0100000
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#define SPH_TWEAK_SKIP_OFFPIXEL_Y_MOVES 0x0200000
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#define SPH_TWEAK_TIMES_NEW_ROMAN_HACK 0x0400000
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#define SPH_TWEAK_MIRP_CVT_ZERO 0x0800000
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FT_LOCAL( FT_Bool )
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sph_test_tweak( TT_Face face,
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FT_String* family,
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FT_UInt ppem,
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FT_String* style,
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FT_UInt glyph_index,
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SPH_TweakRule* rule,
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FT_UInt num_rules );
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FT_LOCAL_DEF( FT_UInt )
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scale_test_tweak( TT_Face face,
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FT_String* family,
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FT_UInt ppem,
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FT_String* style,
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FT_UInt glyph_index,
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SPH_ScaleRule* rule,
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FT_UInt num_rules );
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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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/*************************************************************************/
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/* */
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/* These rules affect how the TT Interpreter does hinting, with the */
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/* goal of doing subpixel hinting by (in general) ignoring x moves. */
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/* Some of these rules are fixes that go above and beyond the */
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/* stated techniques in the MS whitepaper on Cleartype, due to */
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/* artifacts in many glyphs. So, these rules make some glyphs render */
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/* better than they do in the MS rasterizer. */
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/* */
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/* "" string or 0 int/char indicates to apply to all glyphs. */
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/* "-" used as dummy placeholders, but any non-matching string works. */
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/* */
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/* Some of this could arguably be implemented in fontconfig, however: */
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/* */
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/* - Fontconfig can't set things on a glyph-by-glyph basis. */
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/* - The tweaks that happen here are very low-level, from an average */
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/* user's point of view and are best implemented in the hinter. */
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/* */
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/* The goal is to make the subpixel hinting techniques as generalized */
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/* as possible across all fonts to prevent the need for extra rules such */
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/* as these. */
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/* */
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/* The rule structure is designed so that entirely new rules can easily */
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/* be added when a new compatibility feature is discovered. */
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/* */
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/* The rule structures could also use some enhancement to handle ranges. */
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/* */
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/* ****************** WORK IN PROGRESS ******************* */
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/* */
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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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#define SPH_OPTION_GRIDLINES_PER_PIXEL_X 64
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#define SPH_OPTION_GRIDLINES_PER_PIXEL_Y 1
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/* Define this to force natural (i.e. not bitmap-compatible) widths. */
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/* The default leans strongly towards natural widths except for a few */
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/* legacy fonts where a selective combination produces nicer results. */
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/* #define FORCE_NATURAL_WIDTHS */
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/* These are `classes' of fonts that can be grouped together and used in */
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/* rules below. A blank entry "" is required at the end of these! */
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#define FAMILY_CLASS_RULES_SIZE 7
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Font_Class FAMILY_CLASS_Rules
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[FAMILY_CLASS_RULES_SIZE] =
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{
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{ "MS Legacy Fonts",
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{ "Aharoni",
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"Andale Mono",
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"Andalus",
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"Angsana New",
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"AngsanaUPC",
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"Arabic Transparent",
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"Arial Black",
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"Arial Narrow",
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"Arial Unicode MS",
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"Arial",
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"Batang",
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"Browallia New",
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"BrowalliaUPC",
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"Comic Sans MS",
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"Cordia New",
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"CordiaUPC",
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"Courier New",
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"DFKai-SB",
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"David Transparent",
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"David",
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"DilleniaUPC",
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"Estrangelo Edessa",
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"EucrosiaUPC",
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"FangSong_GB2312",
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"Fixed Miriam Transparent",
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"FrankRuehl",
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"Franklin Gothic Medium",
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"FreesiaUPC",
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"Garamond",
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"Gautami",
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"Georgia",
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"Gulim",
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"Impact",
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"IrisUPC",
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"JasmineUPC",
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"KaiTi_GB2312",
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"KodchiangUPC",
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"Latha",
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"Levenim MT",
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"LilyUPC",
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"Lucida Console",
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"Lucida Sans Unicode",
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"MS Gothic",
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"MS Mincho",
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"MV Boli",
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"Mangal",
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"Marlett",
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"Microsoft Sans Serif",
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"Mingliu",
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"Miriam Fixed",
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"Miriam Transparent",
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"Miriam",
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"Narkisim",
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"Palatino Linotype",
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"Raavi",
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"Rod Transparent",
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"Rod",
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"Shruti",
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"SimHei",
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"Simplified Arabic Fixed",
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"Simplified Arabic",
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"Simsun",
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"Sylfaen",
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"Symbol",
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"Tahoma",
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"Times New Roman",
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"Traditional Arabic",
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"Trebuchet MS",
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"Tunga",
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"Verdana",
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"Webdings",
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"Wingdings",
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"",
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},
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},
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{ "Core MS Legacy Fonts",
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{ "Arial Black",
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"Arial Narrow",
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"Arial Unicode MS",
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"Arial",
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"Comic Sans MS",
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"Courier New",
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"Garamond",
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"Georgia",
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"Impact",
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"Lucida Console",
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"Lucida Sans Unicode",
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"Microsoft Sans Serif",
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"Palatino Linotype",
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"Tahoma",
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"Times New Roman",
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"Trebuchet MS",
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"Verdana",
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"",
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},
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},
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{ "Apple Legacy Fonts",
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{ "Geneva",
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"Times",
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"Monaco",
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"Century",
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"Chalkboard",
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"Lobster",
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"Century Gothic",
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"Optima",
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"Lucida Grande",
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"Gill Sans",
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"Baskerville",
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"Helvetica",
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"Helvetica Neue",
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"",
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},
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},
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{ "Legacy Sans Fonts",
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{ "Andale Mono",
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"Arial Unicode MS",
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"Arial",
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"Century Gothic",
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"Comic Sans MS",
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"Franklin Gothic Medium",
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"Geneva",
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"Lucida Console",
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"Lucida Grande",
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"Lucida Sans Unicode",
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"Microsoft Sans Serif",
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"Monaco",
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"Tahoma",
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"Trebuchet MS",
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"Verdana",
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"",
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},
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},
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{ "Misc Legacy Fonts",
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{ "Dark Courier", "", }, },
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{ "Verdana Clones",
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{ "DejaVu Sans",
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"Bitstream Vera Sans", "", }, },
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{ "Verdana and Clones",
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{ "DejaVu Sans",
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"Bitstream Vera Sans",
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"Verdana", "", }, },
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};
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/* Define `classes' of styles that can be grouped together and used in */
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/* rules below. A blank entry "" is required at the end of these! */
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#define STYLE_CLASS_RULES_SIZE 5
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Font_Class STYLE_CLASS_Rules
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[STYLE_CLASS_RULES_SIZE] =
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{
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{ "Regular Class",
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{ "Regular",
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"Book",
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"Medium",
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"Roman",
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"Normal",
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"",
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},
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},
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{ "Regular/Italic Class",
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{ "Regular",
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"Book",
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"Medium",
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"Italic",
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"Oblique",
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"Roman",
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"Normal",
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"",
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},
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},
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{ "Bold/BoldItalic Class",
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{ "Bold",
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"Bold Italic",
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"Black",
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"",
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},
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},
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{ "Bold/Italic/BoldItalic Class",
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{ "Bold",
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"Bold Italic",
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"Black",
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"Italic",
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"Oblique",
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"",
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},
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},
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{ "Regular/Bold Class",
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{ "Regular",
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"Book",
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"Medium",
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"Normal",
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"Roman",
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"Bold",
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"Black",
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"",
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},
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},
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};
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/* Special fixes for known legacy fonts; */
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/* this is the primary workhorse rule for legacy fonts */
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#define COMPATIBILITY_MODE_RULES_SIZE 4
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SPH_TweakRule COMPATIBILITY_MODE_Rules
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[COMPATIBILITY_MODE_RULES_SIZE] =
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{
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{ "MS Legacy Fonts", 0, "", 0 },
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{ "Apple Legacy Fonts", 0, "", 0 },
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{ "Misc Legacy Fonts", 0, "", 0 },
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{ "Verdana Clones", 0, "", 0 },
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};
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/* Don't do subpixel (ignore_x_mode) hinting; do normal hinting. */
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#define PIXEL_HINTING_RULES_SIZE 4
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SPH_TweakRule PIXEL_HINTING_Rules
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[PIXEL_HINTING_RULES_SIZE] =
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{
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/* these characters are almost always safe */
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{ "", 0, "", '<' },
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{ "", 0, "", '>' },
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/* fixes the vanishing stem */
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{ "Times New Roman", 0, "Bold", 'A' },
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{ "Times New Roman", 0, "Bold", 'V' },
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};
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/* According to Greg Hitchcock and the MS whitepaper, this should work */
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/* on all legacy MS fonts, but creates artifacts with some. Only using */
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/* where absolutely necessary. */
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#define SKIP_INLINE_DELTAS_RULES_SIZE 1
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SPH_TweakRule SKIP_INLINE_DELTAS_Rules
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[SKIP_INLINE_DELTAS_RULES_SIZE] =
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{
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{ "-", 0, "", 0 },
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};
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/* Subpixel hinting ignores SHPIX rules on X. Force SHPIX for these. */
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#define DO_SHPIX_RULES_SIZE 1
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|
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 9
|
||
|
|
|
||
|
|
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' },
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
#define SKIP_NONPIXEL_Y_MOVES_RULES_EXCEPTIONS_SIZE 5
|
||
|
|
|
||
|
|
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 },
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* 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 2
|
||
|
|
|
||
|
|
SPH_TweakRule ALLOW_X_DMOVEX_Rules
|
||
|
|
[ALLOW_X_DMOVEX_RULES_SIZE] =
|
||
|
|
{
|
||
|
|
/* Creates a more consistent appearance for these */
|
||
|
|
{ "Arial", 13, "Regular", 'e' },
|
||
|
|
{ "Arial", 13, "Regular", 'o' },
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* Allow a Direct_Move along X freedom vector if matched. */
|
||
|
|
#define ALLOW_X_DMOVE_RULES_SIZE 3
|
||
|
|
|
||
|
|
SPH_TweakRule ALLOW_X_DMOVE_Rules
|
||
|
|
[ALLOW_X_DMOVE_RULES_SIZE] =
|
||
|
|
{
|
||
|
|
/* Creates a more consistent appearance for these */
|
||
|
|
{ "Arial", 13, "Regular", 'e' },
|
||
|
|
{ "Arial", 13, "Regular", 'o' },
|
||
|
|
/* 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 13
|
||
|
|
|
||
|
|
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 },
|
||
|
|
{ "Trebuchet MS", 14, "Regular", 'e' },
|
||
|
|
{ "Arial", 11, "Regular", 's' },
|
||
|
|
{ "Verdana", 10, "Regular", 0 },
|
||
|
|
{ "Verdana", 9, "Regular", 0 },
|
||
|
|
/* Cyrillic small letter short I */
|
||
|
|
{ "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] =
|
||
|
|
{
|
||
|
|
{ "Verdana", 0, "Regular", 0 },
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* Skip moves that meet or exceed 1 pixel. */
|
||
|
|
#define DELTAP_SKIP_EXAGGERATED_VALUES_RULES_SIZE 2
|
||
|
|
|
||
|
|
SPH_TweakRule DELTAP_SKIP_EXAGGERATED_VALUES_Rules
|
||
|
|
[DELTAP_SKIP_EXAGGERATED_VALUES_RULES_SIZE] =
|
||
|
|
{
|
||
|
|
/* Fix vanishing stems */
|
||
|
|
{ "Ubuntu", 0, "Regular", 'M' },
|
||
|
|
/* Fix X at larger ppems */
|
||
|
|
{ "Segoe UI", 0, "Light", 0 },
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* 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 36
|
||
|
|
|
||
|
|
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 },
|
||
|
|
{ "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", 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", 'm' },
|
||
|
|
{ "Verdana and Clones", 12, "Regular Class", 'l' },
|
||
|
|
{ "Verdana and Clones", 12, "Regular Class", 'i' },
|
||
|
|
{ "Verdana and Clones", 12, "Regular Class", 'j' },
|
||
|
|
{ "Verdana and Clones", 13, "Regular Class", 'l' },
|
||
|
|
{ "Verdana and Clones", 13, "Regular Class", 'i' },
|
||
|
|
{ "Verdana and Clones", 13, "Regular Class", 'j' },
|
||
|
|
{ "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 40
|
||
|
|
|
||
|
|
SPH_ScaleRule X_SCALING_Rules
|
||
|
|
[X_SCALING_RULES_SIZE] =
|
||
|
|
{
|
||
|
|
{ "DejaVu Sans", 12, "Regular Class", 'm', 950 },
|
||
|
|
{ "Verdana and Clones", 12, "Regular Class", 'a', 1000 },
|
||
|
|
{ "Arial", 11, "Regular Class", 'm', 975 },
|
||
|
|
{ "Arial", 12, "Regular Class", 'm', 1050 },
|
||
|
|
/* Cyrillic small letter el */
|
||
|
|
{ "Arial", 13, "Regular Class", 0x43B, 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", 'm', 975 },
|
||
|
|
{ "Verdana", 10, "Regular/Italic Class", 0, 1100 },
|
||
|
|
{ "Verdana", 12, "Regular Class", 'm', 975 },
|
||
|
|
{ "Verdana", 12, "Regular/Italic Class", 0, 1050 },
|
||
|
|
{ "Verdana", 16, "Regular Class", 0, 1050 },
|
||
|
|
{ "Verdana", 9, "Regular/Italic Class", 0, 1050 },
|
||
|
|
{ "Times New Roman", 16, "Regular Class", 'm', 950 },
|
||
|
|
{ "Trebuchet MS", 12, "Regular Class", 'm', 950 },
|
||
|
|
};
|
||
|
|
|
||
|
|
#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 */
|