summaryrefslogtreecommitdiffstats
path: root/src/3rdparty/freetype/src/truetype/ttsubpix.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/3rdparty/freetype/src/truetype/ttsubpix.c')
-rw-r--r--src/3rdparty/freetype/src/truetype/ttsubpix.c1013
1 files changed, 0 insertions, 1013 deletions
diff --git a/src/3rdparty/freetype/src/truetype/ttsubpix.c b/src/3rdparty/freetype/src/truetype/ttsubpix.c
deleted file mode 100644
index 56667deaf7..0000000000
--- a/src/3rdparty/freetype/src/truetype/ttsubpix.c
+++ /dev/null
@@ -1,1013 +0,0 @@
-/****************************************************************************
- *
- * ttsubpix.c
- *
- * TrueType Subpixel Hinting.
- *
- * Copyright (C) 2010-2020 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 <freetype/internal/ftdebug.h>
-#include <freetype/internal/ftcalc.h>
-#include <freetype/internal/ftstream.h>
-#include <freetype/internal/sfnt.h>
-#include <freetype/tttags.h>
-#include <freetype/ftoutln.h>
-#include <freetype/ftdriver.h>
-
-#include "ttsubpix.h"
-
-
-#if defined( TT_USE_BYTECODE_INTERPRETER ) && \
- defined( TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY )
-
- /**************************************************************************
- *
- * These rules affect how the TT Interpreter does hinting, with the
- * goal of doing subpixel hinting by (in general) ignoring x moves.
- * Some of these rules are fixes that go above and beyond the
- * stated techniques in the MS whitepaper on Cleartype, due to
- * artifacts in many glyphs. So, these rules make some glyphs render
- * better than they do in the MS rasterizer.
- *
- * "" string or 0 int/char indicates to apply to all glyphs.
- * "-" used as dummy placeholders, but any non-matching string works.
- *
- * Some of this could arguably be implemented in fontconfig, however:
- *
- * - Fontconfig can't set things on a glyph-by-glyph basis.
- * - The tweaks that happen here are very low-level, from an average
- * user's point of view and are best implemented in the hinter.
- *
- * The goal is to make the subpixel hinting techniques as generalized
- * as possible across all fonts to prevent the need for extra rules such
- * as these.
- *
- * The rule structure is designed so that entirely new rules can easily
- * be added when a new compatibility feature is discovered.
- *
- * The rule structures could also use some enhancement to handle ranges.
- *
- * ****************** WORK IN PROGRESS *******************
- */
-
- /* These are `classes' of fonts that can be grouped together and used in */
- /* rules below. A blank entry "" is required at the end of these! */
-#define FAMILY_CLASS_RULES_SIZE 7
-
- static const SPH_Font_Class FAMILY_CLASS_Rules
- [FAMILY_CLASS_RULES_SIZE] =
- {
- { "MS Legacy Fonts",
- { "Aharoni",
- "Andale Mono",
- "Andalus",
- "Angsana New",
- "AngsanaUPC",
- "Arabic Transparent",
- "Arial Black",
- "Arial Narrow",
- "Arial Unicode MS",
- "Arial",
- "Batang",
- "Browallia New",
- "BrowalliaUPC",
- "Comic Sans MS",
- "Cordia New",
- "CordiaUPC",
- "Courier New",
- "DFKai-SB",
- "David Transparent",
- "David",
- "DilleniaUPC",
- "Estrangelo Edessa",
- "EucrosiaUPC",
- "FangSong_GB2312",
- "Fixed Miriam Transparent",
- "FrankRuehl",
- "Franklin Gothic Medium",
- "FreesiaUPC",
- "Garamond",
- "Gautami",
- "Georgia",
- "Gulim",
- "Impact",
- "IrisUPC",
- "JasmineUPC",
- "KaiTi_GB2312",
- "KodchiangUPC",
- "Latha",
- "Levenim MT",
- "LilyUPC",
- "Lucida Console",
- "Lucida Sans Unicode",
- "MS Gothic",
- "MS Mincho",
- "MV Boli",
- "Mangal",
- "Marlett",
- "Microsoft Sans Serif",
- "Mingliu",
- "Miriam Fixed",
- "Miriam Transparent",
- "Miriam",
- "Narkisim",
- "Palatino Linotype",
- "Raavi",
- "Rod Transparent",
- "Rod",
- "Shruti",
- "SimHei",
- "Simplified Arabic Fixed",
- "Simplified Arabic",
- "Simsun",
- "Sylfaen",
- "Symbol",
- "Tahoma",
- "Times New Roman",
- "Traditional Arabic",
- "Trebuchet MS",
- "Tunga",
- "Verdana",
- "Webdings",
- "Wingdings",
- "",
- },
- },
- { "Core MS Legacy Fonts",
- { "Arial Black",
- "Arial Narrow",
- "Arial Unicode MS",
- "Arial",
- "Comic Sans MS",
- "Courier New",
- "Garamond",
- "Georgia",
- "Impact",
- "Lucida Console",
- "Lucida Sans Unicode",
- "Microsoft Sans Serif",
- "Palatino Linotype",
- "Tahoma",
- "Times New Roman",
- "Trebuchet MS",
- "Verdana",
- "",
- },
- },
- { "Apple Legacy Fonts",
- { "Geneva",
- "Times",
- "Monaco",
- "Century",
- "Chalkboard",
- "Lobster",
- "Century Gothic",
- "Optima",
- "Lucida Grande",
- "Gill Sans",
- "Baskerville",
- "Helvetica",
- "Helvetica Neue",
- "",
- },
- },
- { "Legacy Sans Fonts",
- { "Andale Mono",
- "Arial Unicode MS",
- "Arial",
- "Century Gothic",
- "Comic Sans MS",
- "Franklin Gothic Medium",
- "Geneva",
- "Lucida Console",
- "Lucida Grande",
- "Lucida Sans Unicode",
- "Lucida Sans Typewriter",
- "Microsoft Sans Serif",
- "Monaco",
- "Tahoma",
- "Trebuchet MS",
- "Verdana",
- "",
- },
- },
-
- { "Misc Legacy Fonts",
- { "Dark Courier", "", }, },
- { "Verdana Clones",
- { "DejaVu Sans",
- "Bitstream Vera Sans", "", }, },
- { "Verdana and Clones",
- { "DejaVu Sans",
- "Bitstream Vera Sans",
- "Verdana", "", }, },
- };
-
-
- /* Define this to force natural (i.e. not bitmap-compatible) widths. */
- /* The default leans strongly towards natural widths except for a few */
- /* legacy fonts where a selective combination produces nicer results. */
-/* #define FORCE_NATURAL_WIDTHS */
-
-
- /* Define `classes' of styles that can be grouped together and used in */
- /* rules below. A blank entry "" is required at the end of these! */
-#define STYLE_CLASS_RULES_SIZE 5
-
- static const SPH_Font_Class STYLE_CLASS_Rules
- [STYLE_CLASS_RULES_SIZE] =
- {
- { "Regular Class",
- { "Regular",
- "Book",
- "Medium",
- "Roman",
- "Normal",
- "",
- },
- },
- { "Regular/Italic Class",
- { "Regular",
- "Book",
- "Medium",
- "Italic",
- "Oblique",
- "Roman",
- "Normal",
- "",
- },
- },
- { "Bold/BoldItalic Class",
- { "Bold",
- "Bold Italic",
- "Black",
- "",
- },
- },
- { "Bold/Italic/BoldItalic Class",
- { "Bold",
- "Bold Italic",
- "Black",
- "Italic",
- "Oblique",
- "",
- },
- },
- { "Regular/Bold Class",
- { "Regular",
- "Book",
- "Medium",
- "Normal",
- "Roman",
- "Bold",
- "Black",
- "",
- },
- },
- };
-
-
- /* Force special legacy fixes for fonts. */
-#define COMPATIBILITY_MODE_RULES_SIZE 1
-
- static const SPH_TweakRule COMPATIBILITY_MODE_Rules
- [COMPATIBILITY_MODE_RULES_SIZE] =
- {
- { "Verdana Clones", 0, "", 0 },
- };
-
-
- /* Don't do subpixel (ignore_x_mode) hinting; do normal hinting. */
-#define PIXEL_HINTING_RULES_SIZE 2
-
- static const SPH_TweakRule PIXEL_HINTING_Rules
- [PIXEL_HINTING_RULES_SIZE] =
- {
- /* these characters are almost always safe */
- { "Courier New", 12, "Italic", 'z' },
- { "Courier New", 11, "Italic", 'z' },
- };
-
-
- /* Subpixel hinting ignores SHPIX rules on X. Force SHPIX for these. */
-#define DO_SHPIX_RULES_SIZE 1
-
- static const 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 4
-
- static const SPH_TweakRule SKIP_NONPIXEL_Y_MOVES_Rules
- [SKIP_NONPIXEL_Y_MOVES_RULES_SIZE] =
- {
- /* fix vwxyz thinness*/
- { "Consolas", 0, "", 0 },
- /* Fix thin middle stems */
- { "Core MS Legacy Fonts", 0, "Regular", 0 },
- /* Cyrillic small letter I */
- { "Legacy Sans Fonts", 0, "", 0 },
- /* Fix artifacts with some Regular & Bold */
- { "Verdana Clones", 0, "", 0 },
- };
-
-
-#define SKIP_NONPIXEL_Y_MOVES_RULES_EXCEPTIONS_SIZE 1
-
- static const SPH_TweakRule SKIP_NONPIXEL_Y_MOVES_Rules_Exceptions
- [SKIP_NONPIXEL_Y_MOVES_RULES_EXCEPTIONS_SIZE] =
- {
- /* Fixes < and > */
- { "Courier New", 0, "Regular", 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_DELTAP_RULES_SIZE 2
-
- static const SPH_TweakRule SKIP_NONPIXEL_Y_MOVES_DELTAP_Rules
- [SKIP_NONPIXEL_Y_MOVES_DELTAP_RULES_SIZE] =
- {
- /* Maintain thickness of diagonal in 'N' */
- { "Times New Roman", 0, "Regular/Bold Class", 'N' },
- { "Georgia", 0, "Regular/Bold Class", 'N' },
- };
-
-
- /* Skip Y moves that move a point off a Y pixel boundary. */
-#define SKIP_OFFPIXEL_Y_MOVES_RULES_SIZE 1
-
- static const SPH_TweakRule SKIP_OFFPIXEL_Y_MOVES_Rules
- [SKIP_OFFPIXEL_Y_MOVES_RULES_SIZE] =
- {
- { "-", 0, "", 0 },
- };
-
-
-#define SKIP_OFFPIXEL_Y_MOVES_RULES_EXCEPTIONS_SIZE 1
-
- static const 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 2
-
- static const 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 },
- };
-
-
-#define ROUND_NONPIXEL_Y_MOVES_RULES_EXCEPTIONS_SIZE 1
-
- static const SPH_TweakRule ROUND_NONPIXEL_Y_MOVES_Rules_Exceptions
- [ROUND_NONPIXEL_Y_MOVES_RULES_EXCEPTIONS_SIZE] =
- {
- { "-", 0, "", 0 },
- };
-
-
- /* Allow a Direct_Move along X freedom vector if matched. */
-#define ALLOW_X_DMOVE_RULES_SIZE 1
-
- static const SPH_TweakRule ALLOW_X_DMOVE_Rules
- [ALLOW_X_DMOVE_RULES_SIZE] =
- {
- /* Fixes vanishing diagonal in 4 */
- { "Verdana", 0, "Regular", '4' },
- };
-
-
- /* Return MS rasterizer version 35 if matched. */
-#define RASTERIZER_35_RULES_SIZE 8
-
- static const 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 1
-
- static const SPH_TweakRule NORMAL_ROUND_Rules
- [NORMAL_ROUND_RULES_SIZE] =
- {
- /* Fix serif thickness for certain ppems */
- /* Can probably be generalized somehow */
- { "Courier New", 0, "", 0 },
- };
-
-
- /* Skip IUP instructions if matched. */
-#define SKIP_IUP_RULES_SIZE 1
-
- static const 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
-
- static const SPH_TweakRule MIAP_HACK_Rules
- [MIAP_HACK_RULES_SIZE] =
- {
- { "Geneva", 12, "", 0 },
- };
-
-
- /* Skip DELTAP instructions if matched. */
-#define ALWAYS_SKIP_DELTAP_RULES_SIZE 23
-
- static const SPH_TweakRule ALWAYS_SKIP_DELTAP_Rules
- [ALWAYS_SKIP_DELTAP_RULES_SIZE] =
- {
- { "Georgia", 0, "Regular", 'k' },
- /* fix various problems with e in different versions */
- { "Trebuchet MS", 14, "Regular", 'e' },
- { "Trebuchet MS", 13, "Regular", 'e' },
- { "Trebuchet MS", 15, "Regular", 'e' },
- { "Trebuchet MS", 0, "Italic", 'v' },
- { "Trebuchet MS", 0, "Italic", 'w' },
- { "Trebuchet MS", 0, "Regular", 'Y' },
- { "Arial", 11, "Regular", 's' },
- /* prevent problems with '3' and others */
- { "Verdana", 10, "Regular", 0 },
- { "Verdana", 9, "Regular", 0 },
- /* Cyrillic small letter short I */
- { "Legacy Sans Fonts", 0, "", 0x438 },
- { "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", 'a' },
- { "Arial", 25, "Bold", 'a' },
- { "Arial", 24, "Bold", 's' },
- { "Arial", 25, "Bold", 's' },
- { "Arial", 34, "Bold", 's' },
- { "Arial", 35, "Bold", 's' },
- { "Arial", 36, "Bold", 's' },
- { "Arial", 25, "Regular", 's' },
- { "Arial", 26, "Regular", 's' },
- };
-
-
- /* Always do DELTAP instructions if matched. */
-#define ALWAYS_DO_DELTAP_RULES_SIZE 1
-
- static const SPH_TweakRule ALWAYS_DO_DELTAP_Rules
- [ALWAYS_DO_DELTAP_RULES_SIZE] =
- {
- { "-", 0, "", 0 },
- };
-
-
- /* Don't allow ALIGNRP after IUP. */
-#define NO_ALIGNRP_AFTER_IUP_RULES_SIZE 1
-
- static const SPH_TweakRule NO_ALIGNRP_AFTER_IUP_Rules
- [NO_ALIGNRP_AFTER_IUP_RULES_SIZE] =
- {
- /* Prevent creation of dents in outline */
- { "-", 0, "", 0 },
- };
-
-
- /* Don't allow DELTAP after IUP. */
-#define NO_DELTAP_AFTER_IUP_RULES_SIZE 1
-
- static const SPH_TweakRule NO_DELTAP_AFTER_IUP_Rules
- [NO_DELTAP_AFTER_IUP_RULES_SIZE] =
- {
- { "-", 0, "", 0 },
- };
-
-
- /* Don't allow CALL after IUP. */
-#define NO_CALL_AFTER_IUP_RULES_SIZE 1
-
- static const SPH_TweakRule NO_CALL_AFTER_IUP_Rules
- [NO_CALL_AFTER_IUP_RULES_SIZE] =
- {
- /* Prevent creation of dents in outline */
- { "-", 0, "", 0 },
- };
-
-
- /* De-embolden these glyphs slightly. */
-#define DEEMBOLDEN_RULES_SIZE 9
-
- static const 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 2
-
- static const SPH_TweakRule EMBOLDEN_Rules
- [EMBOLDEN_RULES_SIZE] =
- {
- { "Courier New", 0, "Regular", 0 },
- { "Courier New", 0, "Italic", 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
-
- static const 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
-
- static const 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 38
-
- static const 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 },
- { "Monaco", 0, "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", 11, "Regular Class", 0 },
- { "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", 'i' },
- { "Verdana and Clones", 12, "Regular Class", 'j' },
- { "Verdana and Clones", 12, "Regular Class", 'l' },
- { "Verdana and Clones", 12, "Regular Class", 'm' },
- { "Verdana and Clones", 13, "Regular Class", 'i' },
- { "Verdana and Clones", 13, "Regular Class", 'j' },
- { "Verdana and Clones", 13, "Regular Class", 'l' },
- { "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 50
-
- static const SPH_ScaleRule X_SCALING_Rules[X_SCALING_RULES_SIZE] =
- {
- { "DejaVu Sans", 12, "Regular Class", 'm', 950 },
- { "Verdana and Clones", 12, "Regular Class", 'a', 1100 },
- { "Verdana and Clones", 13, "Regular Class", 'a', 1050 },
- { "Arial", 11, "Regular Class", 'm', 975 },
- { "Arial", 12, "Regular Class", 'm', 1050 },
- /* Cyrillic small letter el */
- { "Arial", 13, "Regular Class", 0x43B, 950 },
- { "Arial", 13, "Regular Class", 'o', 950 },
- { "Arial", 13, "Regular Class", 'e', 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", 'i', 975 },
- { "Tahoma", 11, "Regular Class", 'l', 975 },
- { "Tahoma", 11, "Regular Class", 'j', 900 },
- { "Tahoma", 11, "Regular Class", 'm', 918 },
- { "Verdana", 10, "Regular/Italic Class", 0, 1100 },
- { "Verdana", 12, "Regular Class", 'm', 975 },
- { "Verdana", 12, "Regular/Italic Class", 0, 1050 },
- { "Verdana", 13, "Regular/Italic Class", 'i', 950 },
- { "Verdana", 13, "Regular/Italic Class", 'j', 950 },
- { "Verdana", 13, "Regular/Italic Class", 'l', 950 },
- { "Verdana", 16, "Regular Class", 0, 1050 },
- { "Verdana", 9, "Regular/Italic Class", 0, 1050 },
- { "Times New Roman", 16, "Regular Class", 'm', 918 },
- { "Trebuchet MS", 11, "Regular Class", 'm', 800 },
- { "Trebuchet MS", 12, "Regular Class", 'm', 800 },
- };
-
-#else
-
-#define COMPATIBLE_WIDTHS_RULES_SIZE 1
-
- static const SPH_TweakRule COMPATIBLE_WIDTHS_Rules
- [COMPATIBLE_WIDTHS_RULES_SIZE] =
- {
- { "-", 0, "", 0 },
- };
-
-
-#define X_SCALING_RULES_SIZE 1
-
- static const SPH_ScaleRule X_SCALING_Rules
- [X_SCALING_RULES_SIZE] =
- {
- { "-", 0, "", 0, 1000 },
- };
-
-#endif /* FORCE_NATURAL_WIDTHS */
-
-
- static FT_Bool
- is_member_of_family_class( const FT_String* detected_font_name,
- const FT_String* rule_font_name )
- {
- FT_UInt i, j;
-
-
- /* Does font name match rule family? */
- if ( ft_strcmp( detected_font_name, rule_font_name ) == 0 )
- return TRUE;
-
- /* Is font name a wildcard ""? */
- if ( ft_strcmp( rule_font_name, "" ) == 0 )
- return TRUE;
-
- /* Is font name contained in a class list? */
- for ( i = 0; i < FAMILY_CLASS_RULES_SIZE; i++ )
- {
- if ( ft_strcmp( FAMILY_CLASS_Rules[i].name, rule_font_name ) == 0 )
- {
- for ( j = 0; j < SPH_MAX_CLASS_MEMBERS; j++ )
- {
- if ( ft_strcmp( FAMILY_CLASS_Rules[i].member[j], "" ) == 0 )
- continue;
- if ( ft_strcmp( FAMILY_CLASS_Rules[i].member[j],
- detected_font_name ) == 0 )
- return TRUE;
- }
- }
- }
-
- return FALSE;
- }
-
-
- static FT_Bool
- is_member_of_style_class( const FT_String* detected_font_style,
- const FT_String* rule_font_style )
- {
- FT_UInt i, j;
-
-
- /* Does font style match rule style? */
- if ( ft_strcmp( detected_font_style, rule_font_style ) == 0 )
- return TRUE;
-
- /* Is font style a wildcard ""? */
- if ( ft_strcmp( rule_font_style, "" ) == 0 )
- return TRUE;
-
- /* Is font style contained in a class list? */
- for ( i = 0; i < STYLE_CLASS_RULES_SIZE; i++ )
- {
- if ( ft_strcmp( STYLE_CLASS_Rules[i].name, rule_font_style ) == 0 )
- {
- for ( j = 0; j < SPH_MAX_CLASS_MEMBERS; j++ )
- {
- if ( ft_strcmp( STYLE_CLASS_Rules[i].member[j], "" ) == 0 )
- continue;
- if ( ft_strcmp( STYLE_CLASS_Rules[i].member[j],
- detected_font_style ) == 0 )
- return TRUE;
- }
- }
- }
-
- return FALSE;
- }
-
-
- FT_LOCAL_DEF( 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_UInt i;
-
-
- /* rule checks may be able to be optimized further */
- for ( i = 0; i < num_rules; i++ )
- {
- if ( family &&
- ( is_member_of_family_class ( family, rule[i].family ) ) )
- if ( rule[i].ppem == 0 ||
- rule[i].ppem == ppem )
- if ( style &&
- is_member_of_style_class ( style, rule[i].style ) )
- if ( rule[i].glyph == 0 ||
- FT_Get_Char_Index( (FT_Face)face,
- rule[i].glyph ) == glyph_index )
- return TRUE;
- }
-
- return FALSE;
- }
-
-
- static FT_UInt
- scale_test_tweak( TT_Face face,
- const FT_String* family,
- FT_UInt ppem,
- const FT_String* style,
- FT_UInt glyph_index,
- const SPH_ScaleRule* rule,
- FT_UInt num_rules )
- {
- FT_UInt i;
-
-
- /* rule checks may be able to be optimized further */
- for ( i = 0; i < num_rules; i++ )
- {
- if ( family &&
- ( is_member_of_family_class ( family, rule[i].family ) ) )
- if ( rule[i].ppem == 0 ||
- rule[i].ppem == ppem )
- if ( style &&
- is_member_of_style_class( style, rule[i].style ) )
- if ( rule[i].glyph == 0 ||
- FT_Get_Char_Index( (FT_Face)face,
- rule[i].glyph ) == glyph_index )
- return rule[i].scale;
- }
-
- return 1000;
- }
-
-
- FT_LOCAL_DEF( 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 )
- {
- return scale_test_tweak( face, family, ppem, style, glyph_index,
- X_SCALING_Rules, X_SCALING_RULES_SIZE );
- }
-
-
-#define TWEAK_RULES( x ) \
- if ( sph_test_tweak( face, family, ppem, style, glyph_index, \
- x##_Rules, x##_RULES_SIZE ) ) \
- loader->exec->sph_tweak_flags |= SPH_TWEAK_##x;
-
-#define TWEAK_RULES_EXCEPTIONS( x ) \
- if ( sph_test_tweak( face, family, ppem, style, glyph_index, \
- x##_Rules_Exceptions, x##_RULES_EXCEPTIONS_SIZE ) ) \
- loader->exec->sph_tweak_flags &= ~SPH_TWEAK_##x;
-
-
- FT_LOCAL_DEF( void )
- sph_set_tweaks( TT_Loader loader,
- FT_UInt glyph_index )
- {
- TT_Face face = loader->face;
- FT_String* family = face->root.family_name;
- FT_UInt ppem = loader->size->metrics->x_ppem;
- FT_String* style = face->root.style_name;
-
-
- /* don't apply rules if style isn't set */
- if ( !face->root.style_name )
- return;
-
-#ifdef SPH_DEBUG_MORE_VERBOSE
- printf( "%s,%d,%s,%c=%d ",
- family, ppem, style, glyph_index, glyph_index );
-#endif
-
- TWEAK_RULES( PIXEL_HINTING );
-
- if ( loader->exec->sph_tweak_flags & SPH_TWEAK_PIXEL_HINTING )
- {
- loader->exec->ignore_x_mode = FALSE;
- return;
- }
-
- TWEAK_RULES( ALLOW_X_DMOVE );
- TWEAK_RULES( ALWAYS_DO_DELTAP );
- TWEAK_RULES( ALWAYS_SKIP_DELTAP );
- TWEAK_RULES( DEEMBOLDEN );
- TWEAK_RULES( DO_SHPIX );
- TWEAK_RULES( EMBOLDEN );
- TWEAK_RULES( MIAP_HACK );
- TWEAK_RULES( NORMAL_ROUND );
- TWEAK_RULES( NO_ALIGNRP_AFTER_IUP );
- TWEAK_RULES( NO_CALL_AFTER_IUP );
- TWEAK_RULES( NO_DELTAP_AFTER_IUP );
- TWEAK_RULES( RASTERIZER_35 );
- TWEAK_RULES( SKIP_IUP );
-
- TWEAK_RULES( SKIP_OFFPIXEL_Y_MOVES );
- TWEAK_RULES_EXCEPTIONS( SKIP_OFFPIXEL_Y_MOVES );
-
- TWEAK_RULES( SKIP_NONPIXEL_Y_MOVES_DELTAP );
-
- TWEAK_RULES( SKIP_NONPIXEL_Y_MOVES );
- TWEAK_RULES_EXCEPTIONS( SKIP_NONPIXEL_Y_MOVES );
-
- TWEAK_RULES( ROUND_NONPIXEL_Y_MOVES );
- TWEAK_RULES_EXCEPTIONS( ROUND_NONPIXEL_Y_MOVES );
-
- if ( loader->exec->sph_tweak_flags & SPH_TWEAK_RASTERIZER_35 )
- {
- if ( loader->exec->rasterizer_version != TT_INTERPRETER_VERSION_35 )
- {
- loader->exec->rasterizer_version = TT_INTERPRETER_VERSION_35;
- loader->exec->size->cvt_ready = -1;
-
- tt_size_ready_bytecode(
- loader->exec->size,
- FT_BOOL( loader->load_flags & FT_LOAD_PEDANTIC ) );
- }
- else
- loader->exec->rasterizer_version = TT_INTERPRETER_VERSION_35;
- }
- else
- {
- if ( loader->exec->rasterizer_version !=
- SPH_OPTION_SET_RASTERIZER_VERSION )
- {
- loader->exec->rasterizer_version = SPH_OPTION_SET_RASTERIZER_VERSION;
- loader->exec->size->cvt_ready = -1;
-
- tt_size_ready_bytecode(
- loader->exec->size,
- FT_BOOL( loader->load_flags & FT_LOAD_PEDANTIC ) );
- }
- else
- loader->exec->rasterizer_version = SPH_OPTION_SET_RASTERIZER_VERSION;
- }
-
- if ( IS_HINTED( loader->load_flags ) )
- {
- TWEAK_RULES( TIMES_NEW_ROMAN_HACK );
- TWEAK_RULES( COURIER_NEW_2_HACK );
- }
-
- if ( sph_test_tweak( face, family, ppem, style, glyph_index,
- COMPATIBILITY_MODE_Rules, COMPATIBILITY_MODE_RULES_SIZE ) )
- loader->exec->face->sph_compatibility_mode = TRUE;
-
-
- if ( IS_HINTED( loader->load_flags ) )
- {
- if ( sph_test_tweak( face, family, ppem, style, glyph_index,
- COMPATIBLE_WIDTHS_Rules, COMPATIBLE_WIDTHS_RULES_SIZE ) )
- loader->exec->compatible_widths |= TRUE;
- }
- }
-
-#else /* !(TT_USE_BYTECODE_INTERPRETER && */
- /* TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY) */
-
- /* ANSI C doesn't like empty source files */
- typedef int _tt_subpix_dummy;
-
-#endif /* !(TT_USE_BYTECODE_INTERPRETER && */
- /* TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY) */
-
-
-/* END */