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removing the 'autohint' module from the library, since it is

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now replaced by 'autofit'
david-pic-changes
David Turner 20 years ago
parent ebf5585dd0
commit 665279f0d5
21 changed files with 5 additions and 5516 deletions
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  1. 5
      ChangeLog
  2. 1
      Jamfile
  3. 123
      src/autohint/CatharonLicense.txt
  4. 21
      src/autohint/Jamfile
  5. 148
      src/autohint/ahangles.c
  6. 64
      src/autohint/ahangles.h
  7. 40
      src/autohint/aherrors.h
  8. 402
      src/autohint/ahglobal.c
  9. 59
      src/autohint/ahglobal.h
  10. 1566
      src/autohint/ahglyph.c
  11. 95
      src/autohint/ahglyph.h
  12. 1937
      src/autohint/ahhint.c
  13. 75
      src/autohint/ahhint.h
  14. 61
      src/autohint/ahloader.h
  15. 143
      src/autohint/ahmodule.c
  16. 42
      src/autohint/ahmodule.h
  17. 527
      src/autohint/ahtypes.h
  18. 32
      src/autohint/autohint.c
  19. 78
      src/autohint/mather.py
  20. 25
      src/autohint/module.mk
  21. 77
      src/autohint/rules.mk

5
ChangeLog
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@ -1,3 +1,8 @@
2005-03-22 David Turner <david@freetype.org>
* src/autohint/*, Jamfile: removing the 'autohint' module
from the build.
2005-03-15 David Turner <david@freetype.org>
* src/bdf/bdflib.c: Remove compiler warnings.

1
Jamfile
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@ -62,7 +62,6 @@ FT2_BUILD_INCLUDE ?= ;
# if you modify this list or provide your own.
#
FT2_COMPONENTS ?= autofit # auto-fitter
autohint # auto-hinter
base # base component (public APIs)
bdf # BDF font driver
cache # cache sub-system

123
src/autohint/CatharonLicense.txt
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@ -1,123 +0,0 @@
The Catharon Open Source LICENSE
----------------------------
2000-Jul-04
Copyright (C) 2000 by Catharon Productions, Inc.
Introduction
============
This license applies to source files distributed by Catharon
Productions, Inc. in several archive packages. This license
applies to all files found in such packages which do not fall
under their own explicit license.
This license was inspired by the BSD, Artistic, and IJG
(Independent JPEG Group) licenses, which all encourage inclusion
and use of free software in commercial and freeware products
alike. As a consequence, its main points are that:
o We don't promise that this software works. However, we are
interested in any kind of bug reports. (`as is' distribution)
o You can use this software for whatever you want, in parts or
full form, without having to pay us. (`royalty-free' usage)
o You may not pretend that you wrote this software. If you use
it, or only parts of it, in a program, you must acknowledge
somewhere in your documentation that you have used the
Catharon Code. (`credits')
We specifically permit and encourage the inclusion of this
software, with or without modifications, in commercial products.
We disclaim all warranties covering the packages distributed by
Catharon Productions, Inc. and assume no liability related to
their use.
Legal Terms
===========
0. Definitions
--------------
Throughout this license, the terms `Catharon Package', `package',
and `Catharon Code' refer to the set of files originally
distributed by Catharon Productions, Inc.
`You' refers to the licensee, or person using the project, where
`using' is a generic term including compiling the project's source
code as well as linking it to form a `program' or `executable'.
This program is referred to as `a program using one of the
Catharon Packages'.
This license applies to all files distributed in the original
Catharon Package(s), including all source code, binaries and
documentation, unless otherwise stated in the file in its
original, unmodified form as distributed in the original archive.
If you are unsure whether or not a particular file is covered by
this license, you must contact us to verify this.
The Catharon Packages are copyright (C) 2000 by Catharon
Productions, Inc. All rights reserved except as specified below.
1. No Warranty
--------------
THE CATHARON PACKAGES ARE PROVIDED `AS IS' WITHOUT WARRANTY OF ANY
KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. IN NO EVENT WILL ANY OF THE AUTHORS OR COPYRIGHT HOLDERS
BE LIABLE FOR ANY DAMAGES CAUSED BY THE USE OF OR THE INABILITY TO
USE THE CATHARON PACKAGE.
2. Redistribution
-----------------
This license grants a worldwide, royalty-free, perpetual and
irrevocable right and license to use, execute, perform, compile,
display, copy, create derivative works of, distribute and
sublicense the Catharon Packages (in both source and object code
forms) and derivative works thereof for any purpose; and to
authorize others to exercise some or all of the rights granted
herein, subject to the following conditions:
o Redistribution of source code must retain this license file
(`license.txt') unaltered; any additions, deletions or changes
to the original files must be clearly indicated in
accompanying documentation. The copyright notices of the
unaltered, original files must be preserved in all copies of
source files.
o Redistribution in binary form must provide a disclaimer that
states that the software is based in part on the work of
Catharon Productions, Inc. in the distribution documentation.
These conditions apply to any software derived from or based on
the Catharon Packages, not just the unmodified files. If you use
our work, you must acknowledge us. However, no fee need be paid
to us.
3. Advertising
--------------
Neither Catharon Productions, Inc. and contributors nor you shall
use the name of the other for commercial, advertising, or
promotional purposes without specific prior written permission.
We suggest, but do not require, that you use the following phrase
to refer to this software in your documentation: 'this software is
based in part on the Catharon Typography Project'.
As you have not signed this license, you are not required to
accept it. However, as the Catharon Packages are copyrighted
material, only this license, or another one contracted with the
authors, grants you the right to use, distribute, and modify it.
Therefore, by using, distributing, or modifying the Catharon
Packages, you indicate that you understand and accept all the
terms of this license.
--- end of license.txt ---

21
src/autohint/Jamfile
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# FreeType 2 src/autohint Jamfile (c) 2001 David Turner
#
SubDir FT2_TOP $(FT2_SRC_DIR) autohint ;
{
local _sources ;
if $(FT2_MULTI)
{
_sources = ahangles ahglobal ahglyph ahhint ahmodule ;
}
else
{
_sources = autohint ;
}
Library $(FT2_LIB) : $(_sources).c ;
}
# end of src/autohint Jamfile

148
src/autohint/ahangles.c
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/***************************************************************************/
/* */
/* ahangles.c */
/* */
/* Routines used to compute vector angles with limited accuracy */
/* and very high speed (body). */
/* */
/* Copyright 2000-2001, 2002, 2005 Catharon Productions Inc. */
/* Author: David Turner */
/* */
/* This file is part of the Catharon Typography Project and shall only */
/* be used, modified, and distributed under the terms of the Catharon */
/* Open Source License that should come with this file under the name */
/* `CatharonLicense.txt'. By continuing to use, modify, or distribute */
/* this file you indicate that you have read the license and */
/* understand and accept it fully. */
/* */
/* Note that this license is compatible with the FreeType license. */
/* */
/***************************************************************************/
#include <ft2build.h>
#include "ahangles.h"
/* the following table has been automatically generated with */
/* the `mather.py' Python script */
const AH_Angle ah_arctan[1L << AH_ATAN_BITS] =
{
0, 0, 1, 1, 1, 2, 2, 2,
3, 3, 3, 3, 4, 4, 4, 5,
5, 5, 6, 6, 6, 7, 7, 7,
8, 8, 8, 9, 9, 9, 10, 10,
10, 10, 11, 11, 11, 12, 12, 12,
13, 13, 13, 14, 14, 14, 14, 15,
15, 15, 16, 16, 16, 17, 17, 17,
18, 18, 18, 18, 19, 19, 19, 20,
20, 20, 21, 21, 21, 21, 22, 22,
22, 23, 23, 23, 24, 24, 24, 24,
25, 25, 25, 26, 26, 26, 26, 27,
27, 27, 28, 28, 28, 28, 29, 29,
29, 30, 30, 30, 30, 31, 31, 31,
31, 32, 32, 32, 33, 33, 33, 33,
34, 34, 34, 34, 35, 35, 35, 35,
36, 36, 36, 36, 37, 37, 37, 38,
38, 38, 38, 39, 39, 39, 39, 40,
40, 40, 40, 41, 41, 41, 41, 42,
42, 42, 42, 42, 43, 43, 43, 43,
44, 44, 44, 44, 45, 45, 45, 45,
46, 46, 46, 46, 46, 47, 47, 47,
47, 48, 48, 48, 48, 48, 49, 49,
49, 49, 50, 50, 50, 50, 50, 51,
51, 51, 51, 51, 52, 52, 52, 52,
52, 53, 53, 53, 53, 53, 54, 54,
54, 54, 54, 55, 55, 55, 55, 55,
56, 56, 56, 56, 56, 57, 57, 57,
57, 57, 57, 58, 58, 58, 58, 58,
59, 59, 59, 59, 59, 59, 60, 60,
60, 60, 60, 61, 61, 61, 61, 61,
61, 62, 62, 62, 62, 62, 62, 63,
63, 63, 63, 63, 63, 64, 64, 64
};
FT_LOCAL_DEF( AH_Angle )
ah_angle( FT_Vector* v )
{
FT_Pos dx, dy;
AH_Angle angle;
dx = v->x;
dy = v->y;
/* check trivial cases */
if ( dy == 0 )
{
angle = 0;
if ( dx < 0 )
angle = AH_PI;
return angle;
}
else if ( dx == 0 )
{
angle = AH_HALF_PI;
if ( dy < 0 )
angle = -AH_HALF_PI;
return angle;
}
angle = 0;
if ( dx < 0 )
{
dx = -v->x;
dy = -v->y;
angle = AH_PI;
}
if ( dy < 0 )
{
FT_Pos tmp;
tmp = dx;
dx = -dy;
dy = tmp;
angle -= AH_HALF_PI;
}
if ( dx == 0 && dy == 0 )
return 0;
if ( dx == dy )
angle += AH_PI / 4;
else if ( dx > dy )
angle += ah_arctan[FT_DivFix( dy, dx ) >> ( 16 - AH_ATAN_BITS )];
else
angle += AH_HALF_PI -
ah_arctan[FT_DivFix( dx, dy ) >> ( 16 - AH_ATAN_BITS )];
if ( angle > AH_PI )
angle -= AH_2PI;
return angle;
}
FT_LOCAL_DEF( AH_Angle )
ah_angle_diff( AH_Angle angle1,
AH_Angle angle2 )
{
AH_Angle delta;
delta = ( angle2 - angle1 );
if ( delta < 0 )
delta += AH_2PI;
if ( delta > AH_PI )
delta -= AH_2PI;
return delta;
}
/* END */

64
src/autohint/ahangles.h
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@ -1,64 +0,0 @@
/***************************************************************************/
/* */
/* ahangles.h */
/* */
/* A routine used to compute vector angles with limited accuracy */
/* and very high speed (specification). */
/* */
/* Copyright 2000-2001, 2002 Catharon Productions Inc. */
/* Author: David Turner */
/* */
/* This file is part of the Catharon Typography Project and shall only */
/* be used, modified, and distributed under the terms of the Catharon */
/* Open Source License that should come with this file under the name */
/* `CatharonLicense.txt'. By continuing to use, modify, or distribute */
/* this file you indicate that you have read the license and */
/* understand and accept it fully. */
/* */
/* Note that this license is compatible with the FreeType license. */
/* */
/***************************************************************************/
#ifndef __AHANGLES_H__
#define __AHANGLES_H__
#include <ft2build.h>
#include FT_INTERNAL_OBJECTS_H
#include "ahtypes.h"
FT_BEGIN_HEADER
/* PI expressed in ah_angles -- we don't really need an important */
/* precision, so 256 should be enough */
#define AH_PI 256
#define AH_2PI ( AH_PI * 2 )
#define AH_HALF_PI ( AH_PI / 2 )
#define AH_2PIMASK ( AH_2PI - 1 )
/* the number of bits used to express an arc tangent; */
/* see the structure of the lookup table */
#define AH_ATAN_BITS 8
extern
const AH_Angle ah_arctan[1L << AH_ATAN_BITS];
FT_LOCAL( AH_Angle )
ah_angle( FT_Vector* v );
FT_LOCAL( AH_Angle )
ah_angle_diff( AH_Angle angle1,
AH_Angle angle2 );
FT_END_HEADER
#endif /* __AHANGLES_H__ */
/* END */

40
src/autohint/aherrors.h
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@ -1,40 +0,0 @@
/***************************************************************************/
/* */
/* aherrors.h */
/* */
/* Autohinter error codes (specification only). */
/* */
/* Copyright 2001 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. */
/* */
/***************************************************************************/
/*************************************************************************/
/* */
/* This file is used to define the Autohinter error enumeration */
/* constants. */
/* */
/*************************************************************************/
#ifndef __AHERRORS_H__
#define __AHERRORS_H__
#include FT_MODULE_ERRORS_H
#undef __FTERRORS_H__
#define FT_ERR_PREFIX AH_Err_
#define FT_ERR_BASE FT_Mod_Err_Autohint
#include FT_ERRORS_H
#endif /* __AHERRORS_H__ */
/* END */

402
src/autohint/ahglobal.c
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@ -1,402 +0,0 @@
/***************************************************************************/
/* */
/* ahglobal.c */
/* */
/* Routines used to compute global metrics automatically (body). */
/* */
/* Copyright 2000-2001, 2002, 2003, 2004 Catharon Productions Inc. */
/* Author: David Turner */
/* */
/* This file is part of the Catharon Typography Project and shall only */
/* be used, modified, and distributed under the terms of the Catharon */
/* Open Source License that should come with this file under the name */
/* `CatharonLicense.txt'. By continuing to use, modify, or distribute */
/* this file you indicate that you have read the license and */
/* understand and accept it fully. */
/* */
/* Note that this license is compatible with the FreeType license. */
/* */
/***************************************************************************/
#include <ft2build.h>
#include FT_INTERNAL_DEBUG_H
#include "ahglobal.h"
#include "ahglyph.h"
#define MAX_TEST_CHARACTERS 12
/* cf. AH_BLUE_XXX constants in ahtypes.h */
static
const char* const blue_chars[AH_BLUE_MAX] =
{
"THEZOCQS",
"HEZLOCUS",
#ifdef FT_CONFIG_CHESTER_SMALL_F
"fijkdbh",
#endif
"xzroesc",
"xzroesc",
"pqgjy"
};
/* simple insertion sort */
static void
sort_values( FT_Int count,
FT_Pos* table )
{
FT_Int i, j;
FT_Pos swap;
for ( i = 1; i < count; i++ )
{
for ( j = i; j > 0; j-- )
{
if ( table[j] > table[j - 1] )
break;
swap = table[j];
table[j] = table[j - 1];
table[j - 1] = swap;
}
}
}
static FT_Error
ah_hinter_compute_blues( AH_Hinter hinter )
{
AH_Blue blue;
AH_Globals globals = &hinter->globals->design;
FT_Pos flats [MAX_TEST_CHARACTERS];
FT_Pos rounds[MAX_TEST_CHARACTERS];
FT_Int num_flats;
FT_Int num_rounds;
FT_Face face;
FT_GlyphSlot glyph;
FT_Error error;
FT_CharMap charmap;
face = hinter->face;
glyph = face->glyph;
/* save current charmap */
charmap = face->charmap;
/* do we have a Unicode charmap in there? */
error = FT_Select_Charmap( face, FT_ENCODING_UNICODE );
if ( error )
goto Exit;
/* we compute the blues simply by loading each character from the */
/* `blue_chars[blues]' string, then compute its top-most or */
/* bottom-most points (depending on `AH_IS_TOP_BLUE') */
AH_LOG(( "blue zones computation\n" ));
AH_LOG(( "------------------------------------------------\n" ));
for ( blue = AH_BLUE_CAPITAL_TOP; blue < AH_BLUE_MAX; blue++ )
{
const char* p = blue_chars[blue];
const char* limit = p + MAX_TEST_CHARACTERS;
FT_Pos *blue_ref, *blue_shoot;
AH_LOG(( "blue %3d: ", blue ));
num_flats = 0;
num_rounds = 0;
for ( ; p < limit; p++ )
{
FT_UInt glyph_index;
FT_Vector* extremum;
FT_Vector* points;
FT_Vector* point_limit;
FT_Vector* point;
FT_Bool round;
/* exit if we reach the end of the string */
if ( !*p )
break;
AH_LOG(( "`%c'", *p ));
/* load the character in the face -- skip unknown or empty ones */
glyph_index = FT_Get_Char_Index( face, (FT_UInt)*p );
if ( glyph_index == 0 )
continue;
error = FT_Load_Glyph( face, glyph_index, FT_LOAD_NO_SCALE );
if ( error || glyph->outline.n_points <= 0 )
continue;
/* now compute min or max point indices and coordinates */
points = glyph->outline.points;
point_limit = points + glyph->outline.n_points;
point = points;
extremum = point;
point++;
if ( AH_IS_TOP_BLUE( blue ) )
{
for ( ; point < point_limit; point++ )
if ( point->y > extremum->y )
extremum = point;
}
else
{
for ( ; point < point_limit; point++ )
if ( point->y < extremum->y )
extremum = point;
}
AH_LOG(( "%5d", (int)extremum->y ));
/* now, check whether the point belongs to a straight or round */
/* segment; we first need to find in which contour the extremum */
/* lies, then see its previous and next points */
{
FT_Int idx = (FT_Int)( extremum - points );
FT_Int n;
FT_Int first, last, prev, next, end;
FT_Pos dist;
last = -1;
first = 0;
for ( n = 0; n < glyph->outline.n_contours; n++ )
{
end = glyph->outline.contours[n];
if ( end >= idx )
{
last = end;
break;
}
first = end + 1;
}
/* XXX: should never happen! */
if ( last < 0 )
continue;
/* now look for the previous and next points that are not on the */
/* same Y coordinate. Threshold the `closeness'... */
prev = idx;
next = prev;
do
{
if ( prev > first )
prev--;
else
prev = last;
dist = points[prev].y - extremum->y;
if ( dist < -5 || dist > 5 )
break;
} while ( prev != idx );
do
{
if ( next < last )
next++;
else
next = first;
dist = points[next].y - extremum->y;
if ( dist < -5 || dist > 5 )
break;
} while ( next != idx );
/* now, set the `round' flag depending on the segment's kind */
round = FT_BOOL(
FT_CURVE_TAG( glyph->outline.tags[prev] ) != FT_CURVE_TAG_ON ||
FT_CURVE_TAG( glyph->outline.tags[next] ) != FT_CURVE_TAG_ON );
AH_LOG(( "%c ", round ? 'r' : 'f' ));
}
if ( round )
rounds[num_rounds++] = extremum->y;
else
flats[num_flats++] = extremum->y;
}
AH_LOG(( "\n" ));
/* we have computed the contents of the `rounds' and `flats' tables, */
/* now determine the reference and overshoot position of the blue -- */
/* we simply take the median value after a simple sort */
sort_values( num_rounds, rounds );
sort_values( num_flats, flats );
blue_ref = globals->blue_refs + blue;
blue_shoot = globals->blue_shoots + blue;
if ( num_flats == 0 && num_rounds == 0 )
{
*blue_ref = -10000;
*blue_shoot = -10000;
}
else if ( num_flats == 0 )
{
*blue_ref =
*blue_shoot = rounds[num_rounds / 2];
}
else if ( num_rounds == 0 )
{
*blue_ref =
*blue_shoot = flats[num_flats / 2];
}
else
{
*blue_ref = flats[num_flats / 2];
*blue_shoot = rounds[num_rounds / 2];
}
/* there are sometimes problems: if the overshoot position of top */
/* zones is under its reference position, or the opposite for bottom */
/* zones. We must thus check everything there and correct the errors */
if ( *blue_shoot != *blue_ref )
{
FT_Pos ref = *blue_ref;
FT_Pos shoot = *blue_shoot;
FT_Bool over_ref = FT_BOOL( shoot > ref );
if ( AH_IS_TOP_BLUE( blue ) ^ over_ref )
*blue_shoot = *blue_ref = ( shoot + ref ) / 2;
}
AH_LOG(( "-- ref = %ld, shoot = %ld\n", *blue_ref, *blue_shoot ));
}
/* reset original face charmap */
FT_Set_Charmap( face, charmap );
error = 0;
Exit:
return error;
}
static FT_Error
ah_hinter_compute_widths( AH_Hinter hinter )
{
/* scan the array of segments in each direction */
AH_Outline outline = hinter->glyph;
AH_Segment segments;
AH_Segment limit;
AH_Globals globals = &hinter->globals->design;
FT_Pos* widths;
FT_Int dimension;
FT_Int* p_num_widths;
FT_Error error = 0;
FT_Pos edge_distance_threshold = 32000;
globals->num_widths = 0;
globals->num_heights = 0;
/* For now, compute the standard width and height from the `o' */
/* character. I started computing the stem width of the `i' and the */
/* stem height of the "-", but it wasn't too good. Moreover, we now */
/* have a single character that gives us standard width and height. */
{
FT_UInt glyph_index;
glyph_index = FT_Get_Char_Index( hinter->face, 'o' );
if ( glyph_index == 0 )
return 0;
error = FT_Load_Glyph( hinter->face, glyph_index, FT_LOAD_NO_SCALE );
if ( error )
goto Exit;
error = ah_outline_load( hinter->glyph, 0x10000L, 0x10000L,
hinter->face );
if ( error )
goto Exit;
ah_outline_compute_segments( hinter->glyph );
ah_outline_link_segments( hinter->glyph );
}
segments = outline->horz_segments;
limit = segments + outline->num_hsegments;
widths = globals->heights;
p_num_widths = &globals->num_heights;
for ( dimension = 1; dimension >= 0; dimension-- )
{
AH_Segment seg = segments;
AH_Segment link;
FT_Int num_widths = 0;
for ( ; seg < limit; seg++ )
{
link = seg->link;
/* we only consider stem segments there! */
if ( link && link->link == seg && link > seg )
{
FT_Pos dist;
dist = seg->pos - link->pos;
if ( dist < 0 )
dist = -dist;
if ( num_widths < AH_MAX_WIDTHS )
widths[num_widths++] = dist;
}
}
sort_values( num_widths, widths );
*p_num_widths = num_widths;
/* we will now try to find the smallest width */
if ( num_widths > 0 && widths[0] < edge_distance_threshold )
edge_distance_threshold = widths[0];
segments = outline->vert_segments;
limit = segments + outline->num_vsegments;
widths = globals->widths;
p_num_widths = &globals->num_widths;
}
/* Now, compute the edge distance threshold as a fraction of the */
/* smallest width in the font. Set it in `hinter->glyph' too! */
if ( edge_distance_threshold == 32000 )
edge_distance_threshold = 50;
/* let's try 20% */
hinter->glyph->edge_distance_threshold = edge_distance_threshold / 5;
Exit:
return error;
}
FT_LOCAL_DEF( FT_Error )
ah_hinter_compute_globals( AH_Hinter hinter )
{
return ah_hinter_compute_widths( hinter ) ||
ah_hinter_compute_blues ( hinter );
}
/* END */

59
src/autohint/ahglobal.h
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/***************************************************************************/
/* */
/* ahglobal.h */
/* */
/* Routines used to compute global metrics automatically */
/* (specification). */
/* */
/* Copyright 2000-2001, 2002, 2003 Catharon Productions Inc. */
/* Author: David Turner */
/* */
/* This file is part of the Catharon Typography Project and shall only */
/* be used, modified, and distributed under the terms of the Catharon */
/* Open Source License that should come with this file under the name */
/* `CatharonLicense.txt'. By continuing to use, modify, or distribute */
/* this file you indicate that you have read the license and */
/* understand and accept it fully. */
/* */
/* Note that this license is compatible with the FreeType license. */
/* */
/***************************************************************************/
#ifndef __AHGLOBAL_H__
#define __AHGLOBAL_H__
#include <ft2build.h>
#include "ahtypes.h"
#include FT_INTERNAL_OBJECTS_H
FT_BEGIN_HEADER
#ifdef FT_CONFIG_CHESTER_SMALL_F
#define AH_IS_TOP_BLUE( b ) ( (b) == AH_BLUE_CAPITAL_TOP || \
(b) == AH_BLUE_SMALL_F_TOP || \
(b) == AH_BLUE_SMALL_TOP )
#else /* !FT_CONFIG_CHESTER_SMALL_F */
#define AH_IS_TOP_BLUE( b ) ( (b) == AH_BLUE_CAPITAL_TOP || \
(b) == AH_BLUE_SMALL_TOP )
#endif /* !FT_CONFIG_CHESTER_SMALL_F */
/* compute global metrics automatically */
FT_LOCAL( FT_Error )
ah_hinter_compute_globals( AH_Hinter hinter );
FT_END_HEADER
#endif /* __AHGLOBAL_H__ */
/* END */

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/***************************************************************************/
/* */
/* ahglyph.h */
/* */
/* Routines used to load and analyze a given glyph before hinting */
/* (specification). */
/* */
/* Copyright 2000-2001, 2002 Catharon Productions Inc. */
/* Author: David Turner */
/* */
/* This file is part of the Catharon Typography Project and shall only */
/* be used, modified, and distributed under the terms of the Catharon */
/* Open Source License that should come with this file under the name */
/* `CatharonLicense.txt'. By continuing to use, modify, or distribute */
/* this file you indicate that you have read the license and */
/* understand and accept it fully. */
/* */
/* Note that this license is compatible with the FreeType license. */
/* */
/***************************************************************************/
#ifndef __AHGLYPH_H__
#define __AHGLYPH_H__
#include <ft2build.h>
#include "ahtypes.h"
FT_BEGIN_HEADER
typedef enum AH_UV_
{
AH_UV_FXY,
AH_UV_FYX,
AH_UV_OXY,
AH_UV_OYX,
AH_UV_OX,
AH_UV_OY,
AH_UV_YX,
AH_UV_XY /* should always be last! */
} AH_UV;
FT_LOCAL( void )
ah_setup_uv( AH_Outline outline,
AH_UV source );
/* AH_OutlineRec functions - they should be typically called in this order */
FT_LOCAL( FT_Error )
ah_outline_new( FT_Memory memory,
AH_Outline* aoutline );
FT_LOCAL( FT_Error )
ah_outline_load( AH_Outline outline,
FT_Fixed x_scale,
FT_Fixed y_scale,
FT_Face face );
FT_LOCAL( void )
ah_outline_compute_segments( AH_Outline outline );
FT_LOCAL( void )
ah_outline_link_segments( AH_Outline outline );
FT_LOCAL( void )
ah_outline_detect_features( AH_Outline outline );
FT_LOCAL( void )
ah_outline_compute_blue_edges( AH_Outline outline,
AH_Face_Globals globals );
FT_LOCAL( void )
ah_outline_scale_blue_edges( AH_Outline outline,
AH_Face_Globals globals );
FT_LOCAL( void )
ah_outline_save( AH_Outline outline,
AH_Loader loader );
FT_LOCAL( void )
ah_outline_done( AH_Outline outline );
FT_END_HEADER
#endif /* __AHGLYPH_H__ */
/* END */

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/***************************************************************************/
/* */
/* ahhint.h */
/* */
/* Glyph hinter (declaration). */
/* */
/* Copyright 2000-2001, 2002 Catharon Productions Inc. */
/* Author: David Turner */
/* */
/* This file is part of the Catharon Typography Project and shall only */
/* be used, modified, and distributed under the terms of the Catharon */
/* Open Source License that should come with this file under the name */
/* `CatharonLicense.txt'. By continuing to use, modify, or distribute */
/* this file you indicate that you have read the license and */
/* understand and accept it fully. */
/* */
/* Note that this license is compatible with the FreeType license. */
/* */
/***************************************************************************/
#ifndef __AHHINT_H__
#define __AHHINT_H__
#include <ft2build.h>
#include "ahglobal.h"
FT_BEGIN_HEADER
#define AH_HINT_DEFAULT 0
#define AH_HINT_NO_ALIGNMENT 1
#define AH_HINT_NO_HORZ_EDGES 0x200000L /* temporary hack */
#define AH_HINT_NO_VERT_EDGES 0x400000L /* temporary hack */
/* create a new empty hinter object */
FT_LOCAL( FT_Error )
ah_hinter_new( FT_Library library,
AH_Hinter* ahinter );
/* Load a hinted glyph in the hinter */
FT_LOCAL( FT_Error )
ah_hinter_load_glyph( AH_Hinter hinter,
FT_GlyphSlot slot,
FT_Size size,
FT_UInt glyph_index,
FT_Int32 load_flags );
/* finalize a hinter object */
FT_LOCAL( void )
ah_hinter_done( AH_Hinter hinter );
FT_LOCAL( void )
ah_hinter_done_face_globals( AH_Face_Globals globals );
FT_LOCAL( void )
ah_hinter_get_global_hints( AH_Hinter hinter,
FT_Face face,
void** global_hints,
long* global_len );
FT_LOCAL( void )
ah_hinter_done_global_hints( AH_Hinter hinter,
void* global_hints );
FT_END_HEADER
#endif /* __AHHINT_H__ */
/* END */

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/***************************************************************************/
/* */
/* ahloader.h */
/* */
/* Glyph loader for the auto-hinting module (declaration only). */
/* */
/* Copyright 2000-2001, 2002 Catharon Productions Inc. */
/* Author: David Turner */
/* */
/* This file is part of the Catharon Typography Project and shall only */
/* be used, modified, and distributed under the terms of the Catharon */
/* Open Source License that should come with this file under the name */
/* `CatharonLicense.txt'. By continuing to use, modify, or distribute */
/* this file you indicate that you have read the license and */
/* understand and accept it fully. */
/* */
/* Note that this license is compatible with the FreeType license. */
/* */
/***************************************************************************/
/*************************************************************************/
/* */
/* This defines the AH_GlyphLoader type; it is simply a typedef to */
/* FT_GlyphLoader. */
/* */
/*************************************************************************/
#ifndef __AHLOADER_H__
#define __AHLOADER_H__
#include <ft2build.h>
FT_BEGIN_HEADER
#include FT_INTERNAL_GLYPH_LOADER_H
#define AH_Load FT_GlyphLoad
#define AH_Loader FT_GlyphLoader
#define ah_loader_new FT_GlyphLoader_New
#define ah_loader_done FT_GlyphLoader_Done
#define ah_loader_reset FT_GlyphLoader_Reset
#define ah_loader_rewind FT_GlyphLoader_Rewind
#define ah_loader_create_extra FT_GlyphLoader_CreateExtra
#define ah_loader_check_points FT_GlyphLoader_CheckPoints
#define ah_loader_check_subglyphs FT_GlyphLoader_CheckSubGlyphs
#define ah_loader_prepare FT_GlyphLoader_Prepare
#define ah_loader_add FT_GlyphLoader_Add
#define ah_loader_copy_points FT_GlyphLoader_CopyPoints
FT_END_HEADER
#endif /* __AHLOADER_H__ */
/* END */

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/***************************************************************************/
/* */
/* ahmodule.c */
/* */
/* Auto-hinting module implementation (declaration). */
/* */
/* Copyright 2000-2001, 2002, 2003, 2004 Catharon Productions Inc. */
/* Author: David Turner */
/* */
/* This file is part of the Catharon Typography Project and shall only */
/* be used, modified, and distributed under the terms of the Catharon */
/* Open Source License that should come with this file under the name */
/* `CatharonLicense.txt'. By continuing to use, modify, or distribute */
/* this file you indicate that you have read the license and */
/* understand and accept it fully. */
/* */
/* Note that this license is compatible with the FreeType license. */
/* */
/***************************************************************************/
#include <ft2build.h>
#include FT_MODULE_H
#include "ahhint.h"
#ifdef DEBUG_HINTER
AH_Hinter ah_debug_hinter = NULL;
FT_Bool ah_debug_disable_horz = 0;
FT_Bool ah_debug_disable_vert = 0;
#endif
typedef struct FT_AutoHinterRec_
{
FT_ModuleRec root;
AH_Hinter hinter;
} FT_AutoHinterRec;
FT_CALLBACK_DEF( FT_Error )
ft_autohinter_init( FT_Module module ) /* FT_AutoHinter */
{
FT_AutoHinter autohinter = (FT_AutoHinter)module;
FT_Error error;
error = ah_hinter_new( module->library, &autohinter->hinter );
#ifdef DEBUG_HINTER
if ( !error )
ah_debug_hinter = autohinter->hinter;
#endif
return error;
}
FT_CALLBACK_DEF( void )
ft_autohinter_done( FT_Module module )
{
FT_AutoHinter autohinter = (FT_AutoHinter)module;
ah_hinter_done( autohinter->hinter );
#ifdef DEBUG_HINTER
ah_debug_hinter = NULL;
#endif
}
FT_CALLBACK_DEF( FT_Error )
ft_autohinter_load_glyph( FT_AutoHinter module,
FT_GlyphSlot slot,
FT_Size size,
FT_UInt glyph_index,
FT_Int32 load_flags )
{
return ah_hinter_load_glyph( module->hinter,
slot, size, glyph_index, load_flags );
}
FT_CALLBACK_DEF( void )
ft_autohinter_reset_globals( FT_AutoHinter module,
FT_Face face )
{
FT_UNUSED( module );
if ( face->autohint.data )
ah_hinter_done_face_globals( (AH_Face_Globals)(face->autohint.data) );
}
FT_CALLBACK_DEF( void )
ft_autohinter_get_globals( FT_AutoHinter module,
FT_Face face,
void** global_hints,
long* global_len )
{
ah_hinter_get_global_hints( module->hinter, face,
global_hints, global_len );
}
FT_CALLBACK_DEF( void )
ft_autohinter_done_globals( FT_AutoHinter module,
void* global_hints )
{
ah_hinter_done_global_hints( module->hinter, global_hints );
}
FT_CALLBACK_TABLE_DEF
const FT_AutoHinter_ServiceRec ft_autohinter_service =
{
ft_autohinter_reset_globals,
ft_autohinter_get_globals,
ft_autohinter_done_globals,
ft_autohinter_load_glyph
};
FT_CALLBACK_TABLE_DEF
const FT_Module_Class autohint_module_class =
{
FT_MODULE_HINTER,
sizeof ( FT_AutoHinterRec ),
"autohinter",
0x10000L, /* version 1.0 of the autohinter */
0x20000L, /* requires FreeType 2.0 or above */
(const void*) &ft_autohinter_service,
ft_autohinter_init,
ft_autohinter_done,
0 /* FT_Module_Requester */
};
/* END */

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/***************************************************************************/
/* */
/* ahmodule.h */
/* */
/* Auto-hinting module (declaration). */
/* */
/* Copyright 2000-2001 Catharon Productions Inc. */
/* Author: David Turner */
/* */
/* This file is part of the Catharon Typography Project and shall only */
/* be used, modified, and distributed under the terms of the Catharon */
/* Open Source License that should come with this file under the name */
/* `CatharonLicense.txt'. By continuing to use, modify, or distribute */
/* this file you indicate that you have read the license and */
/* understand and accept it fully. */
/* */
/* Note that this license is compatible with the FreeType license. */
/* */
/***************************************************************************/
#ifndef __AHMODULE_H__
#define __AHMODULE_H__
#include <ft2build.h>
#include FT_MODULE_H
FT_BEGIN_HEADER
FT_CALLBACK_TABLE
const FT_Module_Class autohint_module_class;
FT_END_HEADER
#endif /* __AHMODULE_H__ */
/* END */

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/***************************************************************************/
/* */
/* ahtypes.h */
/* */
/* General types and definitions for the auto-hint module */
/* (specification only). */
/* */
/* Copyright 2000-2001, 2002, 2003, 2004 Catharon Productions Inc. */
/* Author: David Turner */
/* */
/* This file is part of the Catharon Typography Project and shall only */
/* be used, modified, and distributed under the terms of the Catharon */
/* Open Source License that should come with this file under the name */
/* `CatharonLicense.txt'. By continuing to use, modify, or distribute */
/* this file you indicate that you have read the license and */
/* understand and accept it fully. */
/* */
/* Note that this license is compatible with the FreeType license. */
/* */
/***************************************************************************/
#ifndef __AHTYPES_H__
#define __AHTYPES_H__
#include <ft2build.h>
#include FT_INTERNAL_OBJECTS_H
#ifdef DEBUG_HINTER
#include <../src/autohint/ahloader.h>
#else
#include "ahloader.h"
#endif
#define xxAH_DEBUG
#ifdef AH_DEBUG
#include <stdio.h>
#define AH_LOG( x ) printf ## x
#else
#define AH_LOG( x ) do ; while ( 0 ) /* nothing */
#endif /* AH_DEBUG */
FT_BEGIN_HEADER
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/**** ****/
/**** COMPILE-TIME BUILD OPTIONS ****/
/**** ****/
/**** Toggle these configuration macros to experiment with `features' ****/
/**** of the auto-hinter. ****/
/**** ****/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/* */
/* If this option is defined, only strong interpolation will be used to */
/* place the points between edges. Otherwise, `smooth' points are */
/* detected and later hinted through weak interpolation to correct some */
/* unpleasant artefacts. */
/* */
#undef AH_OPTION_NO_WEAK_INTERPOLATION
/*************************************************************************/
/* */
/* Undefine this macro if you don't want to hint the metrics. There is */
/* no reason to do this (at least for non-CJK scripts), except for */
/* experimentation. */
/* */
#undef AH_HINT_METRICS
/*************************************************************************/
/* */
/* Define this macro if you do not want to insert extra edges at a */
/* glyph's x and y extremum (if there isn't one already available). */
/* This helps to reduce a number of artefacts and allows hinting of */
/* metrics. */
/* */
#undef AH_OPTION_NO_EXTREMUM_EDGES
/* don't touch for now */
#define AH_MAX_WIDTHS 12
#define AH_MAX_HEIGHTS 12
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/**** ****/
/**** TYPE DEFINITIONS ****/
/**** ****/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/* see ahangles.h */
typedef FT_Int AH_Angle;
/* hint flags */
#define AH_FLAG_NONE 0
/* bezier control points flags */
#define AH_FLAG_CONIC 1
#define AH_FLAG_CUBIC 2
#define AH_FLAG_CONTROL ( AH_FLAG_CONIC | AH_FLAG_CUBIC )
/* extrema flags */
#define AH_FLAG_EXTREMA_X 4
#define AH_FLAG_EXTREMA_Y 8
/* roundness */
#define AH_FLAG_ROUND_X 16
#define AH_FLAG_ROUND_Y 32
/* touched */
#define AH_FLAG_TOUCH_X 64
#define AH_FLAG_TOUCH_Y 128
/* weak interpolation */
#define AH_FLAG_WEAK_INTERPOLATION 256
#define AH_FLAG_INFLECTION 512
typedef FT_Int AH_Flags;
/* edge hint flags */
#define AH_EDGE_NORMAL 0
#define AH_EDGE_ROUND 1
#define AH_EDGE_SERIF 2
#define AH_EDGE_DONE 4
typedef FT_Int AH_Edge_Flags;
/* hint directions -- the values are computed so that two vectors are */
/* in opposite directions iff `dir1+dir2 == 0' */
#define AH_DIR_NONE 4
#define AH_DIR_RIGHT 1
#define AH_DIR_LEFT -1
#define AH_DIR_UP 2
#define AH_DIR_DOWN -2
typedef FT_Int AH_Direction;
typedef struct AH_PointRec_* AH_Point;
typedef struct AH_SegmentRec_* AH_Segment;
typedef struct AH_EdgeRec_* AH_Edge;
/*************************************************************************/
/* */
/* <Struct> */
/* AH_PointRec */
/* */
/* <Description> */
/* A structure used to model an outline point to the AH_OutlineRec */
/* type. */
/* */
/* <Fields> */
/* flags :: The current point hint flags. */
/* */
/* ox, oy :: The current original scaled coordinates. */
/* */
/* fx, fy :: The current coordinates in font units. */
/* */
/* x, y :: The current hinted coordinates. */
/* */
/* u, v :: Point coordinates -- meaning varies with context. */
/* */
/* in_dir :: The direction of the inwards vector (prev->point). */
/* */
/* out_dir :: The direction of the outwards vector (point->next). */
/* */
/* next :: The next point in same contour. */
/* */
/* prev :: The previous point in same contour. */
/* */
typedef struct AH_PointRec_
{
AH_Flags flags; /* point flags used by hinter */
FT_Pos ox, oy;
FT_Pos fx, fy;
FT_Pos x, y;
FT_Pos u, v;
AH_Direction in_dir; /* direction of inwards vector */
AH_Direction out_dir; /* direction of outwards vector */
AH_Point next; /* next point in contour */
AH_Point prev; /* previous point in contour */
} AH_PointRec;
/*************************************************************************/
/* */
/* <Struct> */
/* AH_SegmentRec */
/* */
/* <Description> */
/* A structure used to describe an edge segment to the auto-hinter. */
/* A segment is simply a sequence of successive points located on the */
/* same horizontal or vertical `position', in a given direction. */
/* */
/* <Fields> */
/* flags :: The segment edge flags (straight, rounded, etc.). */
/* */
/* dir :: The segment direction. */
/* */
/* min_coord :: The minimum coordinate of the segment. */
/* */
/* max_coord :: The maximum coordinate of the segment. */
/* */
/* edge :: The edge of the current segment. */
/* */
/* edge_next :: The next segment on the same edge. */
/* */
/* link :: The pairing segment for this edge. */
/* */
/* serif :: The primary segment for serifs. */
/* */
/* num_linked :: The number of other segments that link to this one. */
/* */
/* score :: Used to score the segment when selecting them. */
/* */
/* first :: The first point in the segment. */
/* */
/* last :: The last point in the segment. */
/* */
/* contour :: A pointer to the first point of the segment's */
/* contour. */
/* */
typedef struct AH_SegmentRec_
{
AH_Edge_Flags flags;
AH_Direction dir;
FT_Pos pos; /* position of segment */
FT_Pos min_coord; /* minimum coordinate of segment */
FT_Pos max_coord; /* maximum coordinate of segment */
AH_Edge edge;
AH_Segment edge_next;
AH_Segment link; /* link segment */
AH_Segment serif; /* primary segment for serifs */
FT_Pos num_linked; /* number of linked segments */
FT_Pos score;
AH_Point first; /* first point in edge segment */
AH_Point last; /* last point in edge segment */
AH_Point* contour; /* ptr to first point of segment's contour */
} AH_SegmentRec;
/*************************************************************************/
/* */
/* <Struct> */
/* AH_EdgeRec */
/* */
/* <Description> */
/* A structure used to describe an edge, which really is a horizontal */
/* or vertical coordinate to be hinted depending on the segments */
/* located on it. */
/* */
/* <Fields> */
/* fpos :: The original edge position in font units. */
/* */
/* opos :: The original scaled edge position. */
/* */
/* pos :: The hinted edge position. */
/* */
/* flags :: The segment edge flags (straight, rounded, etc.). */
/* */
/* dir :: The main segment direction on this edge. */
/* */
/* scale :: Scaling factor between original and hinted edge */
/* positions. */
/* */
/* blue_edge :: Indicate the blue zone edge this edge is related to. */
/* Only set for some of the horizontal edges in a latin */
/* font. */
/* */
/* link :: The linked edge. */
/* */
/* serif :: The serif edge. */
/* */
/* num_linked :: The number of other edges that pair to this one. */
/* */
/* score :: Used to score the edge when selecting them. */
/* */
/* first :: The first edge segment. */
/* */
/* last :: The last edge segment. */
/* */
typedef struct AH_EdgeRec_
{
FT_Pos fpos;
FT_Pos opos;
FT_Pos pos;
AH_Edge_Flags flags;
AH_Direction dir;
FT_Fixed scale;
FT_Pos* blue_edge;
AH_Edge link;
AH_Edge serif;
FT_Int num_linked;
FT_Int score;
AH_Segment first;
AH_Segment last;
} AH_EdgeRec;
/* an outline as seen by the hinter */
typedef struct AH_OutlineRec_
{
FT_Memory memory;
AH_Direction vert_major_dir; /* vertical major direction */
AH_Direction horz_major_dir; /* horizontal major direction */
FT_Fixed x_scale;
FT_Fixed y_scale;
FT_Pos edge_distance_threshold;
FT_Int max_points;
FT_Int num_points;
AH_Point points;
FT_Int max_contours;
FT_Int num_contours;
AH_Point* contours;
FT_Int num_hedges;
AH_Edge horz_edges;
FT_Int num_vedges;
AH_Edge vert_edges;
FT_Int num_hsegments;
AH_Segment horz_segments;
FT_Int num_vsegments;
AH_Segment vert_segments;
} AH_OutlineRec, *AH_Outline;
#ifdef FT_CONFIG_CHESTER_SMALL_F
#define AH_BLUE_CAPITAL_TOP 0 /* THEZOCQS */
#define AH_BLUE_CAPITAL_BOTTOM ( AH_BLUE_CAPITAL_TOP + 1 ) /* HEZLOCUS */
#define AH_BLUE_SMALL_F_TOP ( AH_BLUE_CAPITAL_BOTTOM + 1 ) /* fijkdbh */
#define AH_BLUE_SMALL_TOP ( AH_BLUE_SMALL_F_TOP + 1 ) /* xzroesc */
#define AH_BLUE_SMALL_BOTTOM ( AH_BLUE_SMALL_TOP + 1 ) /* xzroesc */
#define AH_BLUE_SMALL_MINOR ( AH_BLUE_SMALL_BOTTOM + 1 ) /* pqgjy */
#define AH_BLUE_MAX ( AH_BLUE_SMALL_MINOR + 1 )
#else /* !FT_CONFIG_CHESTER_SMALL_F */
#define AH_BLUE_CAPITAL_TOP 0 /* THEZOCQS */
#define AH_BLUE_CAPITAL_BOTTOM ( AH_BLUE_CAPITAL_TOP + 1 ) /* HEZLOCUS */
#define AH_BLUE_SMALL_TOP ( AH_BLUE_CAPITAL_BOTTOM + 1 ) /* xzroesc */
#define AH_BLUE_SMALL_BOTTOM ( AH_BLUE_SMALL_TOP + 1 ) /* xzroesc */
#define AH_BLUE_SMALL_MINOR ( AH_BLUE_SMALL_BOTTOM + 1 ) /* pqgjy */
#define AH_BLUE_MAX ( AH_BLUE_SMALL_MINOR + 1 )
#endif /* !FT_CONFIG_CHESTER_SMALL_F */
typedef FT_Int AH_Blue;
#define AH_HINTER_MONOCHROME 1
#define AH_HINTER_OPTIMIZE 2
typedef FT_Int AH_Hinter_Flags;
/*************************************************************************/
/* */
/* <Struct> */
/* AH_GlobalsRec */
/* */
/* <Description> */
/* Holds the global metrics for a given font face (be it in design */
/* units or scaled pixel values). */
/* */
/* <Fields> */
/* num_widths :: The number of widths. */
/* */
/* num_heights :: The number of heights. */
/* */
/* stds :: A two-element array giving the default stem width */
/* and height. */
/* */
/* widths :: Snap widths, including standard one. */
/* */
/* heights :: Snap height, including standard one. */
/* */
/* blue_refs :: The reference positions of blue zones. */
/* */
/* blue_shoots :: The overshoot positions of blue zones. */
/* */
typedef struct AH_GlobalsRec_
{
FT_Int num_widths;
FT_Int num_heights;
FT_Pos stds[2];
FT_Pos widths [AH_MAX_WIDTHS];
FT_Pos heights[AH_MAX_HEIGHTS];
FT_Pos blue_refs [AH_BLUE_MAX];
FT_Pos blue_shoots[AH_BLUE_MAX];
} AH_GlobalsRec, *AH_Globals;
/*************************************************************************/
/* */
/* <Struct> */
/* AH_Face_GlobalsRec */
/* */
/* <Description> */
/* Holds the complete global metrics for a given font face (i.e., the */
/* design units version + a scaled version + the current scales */
/* used). */
/* */
/* <Fields> */
/* face :: A handle to the source face object */
/* */
/* design :: The globals in font design units. */
/* */
/* scaled :: Scaled globals in sub-pixel values. */
/* */
/* x_scale :: The current horizontal scale. */
/* */
/* y_scale :: The current vertical scale. */
/* */
/* control_overshoot :: */
/* Currently unused. */
/* */
typedef struct AH_Face_GlobalsRec_
{
FT_Face face;
AH_GlobalsRec design;
AH_GlobalsRec scaled;
FT_Fixed x_scale;
FT_Fixed y_scale;
FT_Bool control_overshoot;
} AH_Face_GlobalsRec, *AH_Face_Globals;
typedef struct AH_HinterRec_
{
FT_Memory memory;
AH_Hinter_Flags flags;
FT_Int algorithm;
FT_Face face;
AH_Face_Globals globals;
AH_Outline glyph;
AH_Loader loader;
FT_Vector pp1; /* horizontal phantom points */
FT_Vector pp2;
/* we ignore vertical phantom points */
FT_Bool transformed;
FT_Vector trans_delta;
FT_Matrix trans_matrix;
FT_Bool do_horz_hints; /* disable X hinting */
FT_Bool do_vert_hints; /* disable Y hinting */
FT_Bool do_horz_snapping; /* disable X stem size snapping */
FT_Bool do_vert_snapping; /* disable Y stem size snapping */
FT_Bool do_stem_adjust; /* disable light stem snapping */
} AH_HinterRec, *AH_Hinter;
#ifdef DEBUG_HINTER
extern AH_Hinter ah_debug_hinter;
extern FT_Bool ah_debug_disable_horz;
extern FT_Bool ah_debug_disable_vert;
#else
#define ah_debug_disable_horz 0
#define ah_debug_disable_vert 0
#endif /* DEBUG_HINTER */
FT_END_HEADER
#endif /* __AHTYPES_H__ */
/* END */

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/***************************************************************************/
/* */
/* autohint.c */
/* */
/* Automatic Hinting wrapper (body only). */
/* */
/* Copyright 2000-2001 Catharon Productions Inc. */
/* Author: David Turner */
/* */
/* This file is part of the Catharon Typography Project and shall only */
/* be used, modified, and distributed under the terms of the Catharon */
/* Open Source License that should come with this file under the name */
/* `CatharonLicense.txt'. By continuing to use, modify, or distribute */
/* this file you indicate that you have read the license and */
/* understand and accept it fully. */
/* */
/* Note that this license is compatible with the FreeType license. */
/* */
/***************************************************************************/
#define FT_MAKE_OPTION_SINGLE_OBJECT
#include <ft2build.h>
#include "ahangles.c"
#include "ahglyph.c"
#include "ahglobal.c"
#include "ahhint.c"
#include "ahmodule.c"
/* END */

78
src/autohint/mather.py
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#!/usr/bin/env python
#
#
# autohint math table builder
#
# Copyright 1996-2000 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.
import math
ag_pi = 256
def print_arctan( atan_bits ):
atan_base = 1 << atan_bits
print " static AH_Angle ag_arctan[1L << AG_ATAN_BITS] ="
print " {"
count = 0
line = " "
for n in range( atan_base ):
comma = ","
if ( n == atan_base - 1 ):
comma = ""
angle = math.atan( n * 1.0 / atan_base ) / math.pi * ag_pi
line = line + " " + repr( int( angle + 0.5 ) ) + comma
count = count + 1;
if ( count == 8 ):
count = 0
print line
line = " "
if ( count > 0 ):
print line
print " };"
# This routine is not used currently.
#
def print_sines():
print " static FT_Fixed ah_sines[AG_HALF_PI + 1] ="
print " {"
count = 0
line = " "
for n in range( ag_pi / 2 ):
sinus = math.sin( n * math.pi / ag_pi )
line = line + " " + repr( int( 65536.0 * sinus ) ) + ","
count = count + 1
if ( count == 8 ):
count = 0
print line
line = " "
if ( count > 0 ):
print line
print " 65536"
print " };"
print_arctan( 8 )
print
# END

25
src/autohint/module.mk
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#
# FreeType 2 auto-hinter module definition
#
# Copyright 2000 Catharon Productions Inc.
# Author: David Turner
#
# This file is part of the Catharon Typography Project and shall only
# be used, modified, and distributed under the terms of the Catharon
# Open Source License that should come with this file under the name
# `CatharonLicense.txt'. By continuing to use, modify, or distribute
# this file you indicate that you have read the license and
# understand and accept it fully.
#
# Note that this license is compatible with the FreeType license.
make_module_list: add_autohint_module
add_autohint_module:
$(OPEN_DRIVER)autohint_module_class$(CLOSE_DRIVER)
$(ECHO_DRIVER)autohint $(ECHO_DRIVER_DESC)automatic hinting module$(ECHO_DRIVER_DONE)
# EOF

77
src/autohint/rules.mk
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#
# FreeType 2 auto-hinter module configuration rules
#
# Copyright 2000, 2001, 2002, 2003 Catharon Productions Inc.
# Author: David Turner
#
# This file is part of the Catharon Typography Project and shall only
# be used, modified, and distributed under the terms of the Catharon
# Open Source License that should come with this file under the name
# `CatharonLicense.txt'. By continuing to use, modify, or distribute
# this file you indicate that you have read the license and
# understand and accept it fully.
#
# Note that this license is compatible with the FreeType license.
# AUTO driver directory
#
AUTO_DIR := $(SRC_DIR)/autohint
# compilation flags for the driver
#
AUTO_COMPILE := $(FT_COMPILE) $I$(subst /,$(COMPILER_SEP),$(AUTO_DIR))
# AUTO driver sources (i.e., C files)
#
AUTO_DRV_SRC := $(AUTO_DIR)/ahangles.c \
$(AUTO_DIR)/ahglobal.c \
$(AUTO_DIR)/ahglyph.c \
$(AUTO_DIR)/ahhint.c \
$(AUTO_DIR)/ahmodule.c
# AUTO driver headers
#
AUTO_DRV_H := $(AUTO_DRV_SRC:%c=%h) \
$(AUTO_DIR)/ahloader.h \
$(AUTO_DIR)/ahtypes.h \
$(AUTO_DIR)/aherrors.h
# AUTO driver object(s)
#
# AUTO_DRV_OBJ_M is used during `multi' builds.
# AUTO_DRV_OBJ_S is used during `single' builds.
#
AUTO_DRV_OBJ_M := $(AUTO_DRV_SRC:$(AUTO_DIR)/%.c=$(OBJ_DIR)/%.$O)
AUTO_DRV_OBJ_S := $(OBJ_DIR)/autohint.$O
# AUTO driver source file for single build
#
AUTO_DRV_SRC_S := $(AUTO_DIR)/autohint.c
# AUTO driver - single object
#
$(AUTO_DRV_OBJ_S): $(AUTO_DRV_SRC_S) $(AUTO_DRV_SRC) \
$(FREETYPE_H) $(AUTO_DRV_H)
$(AUTO_COMPILE) $T$(subst /,$(COMPILER_SEP),$@ $(AUTO_DRV_SRC_S))
# AUTO driver - multiple objects
#
$(OBJ_DIR)/%.$O: $(AUTO_DIR)/%.c $(FREETYPE_H) $(AUTO_DRV_H)
$(AUTO_COMPILE) $T$(subst /,$(COMPILER_SEP),$@ $<)
# update main driver object lists
#
DRV_OBJS_S += $(AUTO_DRV_OBJ_S)
DRV_OBJS_M += $(AUTO_DRV_OBJ_M)
# EOF
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