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Diffstat (limited to 'src/autofit/aftypes.h')
| -rw-r--r-- | src/autofit/aftypes.h | 349 |
1 files changed, 0 insertions, 349 deletions
diff --git a/src/autofit/aftypes.h b/src/autofit/aftypes.h deleted file mode 100644 index 56811f0..0000000 --- a/src/autofit/aftypes.h +++ /dev/null @@ -1,349 +0,0 @@ -/***************************************************************************/ -/* */ -/* aftypes.h */ -/* */ -/* Auto-fitter types (specification only). */ -/* */ -/* Copyright 2003, 2004, 2005, 2006, 2007, 2008 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. */ -/* */ -/***************************************************************************/ - - - /************************************************************************* - * - * The auto-fitter is a complete rewrite of the old auto-hinter. - * Its main feature is the ability to differentiate between different - * scripts in order to apply language-specific rules. - * - * The code has also been compartmentized into several entities that - * should make algorithmic experimentation easier than with the old - * code. - * - * Finally, we get rid of the Catharon license, since this code is - * released under the FreeType one. - * - *************************************************************************/ - - -#ifndef __AFTYPES_H__ -#define __AFTYPES_H__ - -#include <ft2build.h> - -#include FT_FREETYPE_H -#include FT_OUTLINE_H -#include FT_INTERNAL_OBJECTS_H -#include FT_INTERNAL_DEBUG_H - - -FT_BEGIN_HEADER - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** D E B U G G I N G *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - -#define xxAF_USE_WARPER /* only define to use warp hinting */ -#define xxAF_DEBUG - -#ifdef AF_DEBUG - -#include <stdio.h> -#define AF_LOG( x ) do { if ( _af_debug ) printf x; } while ( 0 ) - -extern int _af_debug; -extern int _af_debug_disable_horz_hints; -extern int _af_debug_disable_vert_hints; -extern int _af_debug_disable_blue_hints; -extern void* _af_debug_hints; - -#else /* !AF_DEBUG */ - -#define AF_LOG( x ) do ; while ( 0 ) /* nothing */ - -#endif /* !AF_DEBUG */ - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** U T I L I T Y S T U F F *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - typedef struct AF_WidthRec_ - { - FT_Pos org; /* original position/width in font units */ - FT_Pos cur; /* current/scaled position/width in device sub-pixels */ - FT_Pos fit; /* current/fitted position/width in device sub-pixels */ - - } AF_WidthRec, *AF_Width; - - - FT_LOCAL( void ) - af_sort_pos( FT_UInt count, - FT_Pos* table ); - - FT_LOCAL( void ) - af_sort_widths( FT_UInt count, - AF_Width widths ); - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** A N G L E T Y P E S *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - /* - * The auto-fitter doesn't need a very high angular accuracy; - * this allows us to speed up some computations considerably with a - * light Cordic algorithm (see afangles.c). - */ - - typedef FT_Int AF_Angle; - - -#define AF_ANGLE_PI 256 -#define AF_ANGLE_2PI ( AF_ANGLE_PI * 2 ) -#define AF_ANGLE_PI2 ( AF_ANGLE_PI / 2 ) -#define AF_ANGLE_PI4 ( AF_ANGLE_PI / 4 ) - - -#if 0 - /* - * compute the angle of a given 2-D vector - */ - FT_LOCAL( AF_Angle ) - af_angle_atan( FT_Pos dx, - FT_Pos dy ); - - - /* - * compute `angle2 - angle1'; the result is always within - * the range [-AF_ANGLE_PI .. AF_ANGLE_PI - 1] - */ - FT_LOCAL( AF_Angle ) - af_angle_diff( AF_Angle angle1, - AF_Angle angle2 ); -#endif /* 0 */ - - -#define AF_ANGLE_DIFF( result, angle1, angle2 ) \ - FT_BEGIN_STMNT \ - AF_Angle _delta = (angle2) - (angle1); \ - \ - \ - _delta %= AF_ANGLE_2PI; \ - if ( _delta < 0 ) \ - _delta += AF_ANGLE_2PI; \ - \ - if ( _delta > AF_ANGLE_PI ) \ - _delta -= AF_ANGLE_2PI; \ - \ - result = _delta; \ - FT_END_STMNT - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** O U T L I N E S *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - /* opaque handle to glyph-specific hints -- see `afhints.h' for more - * details - */ - typedef struct AF_GlyphHintsRec_* AF_GlyphHints; - - /* This structure is used to model an input glyph outline to - * the auto-hinter. The latter will set the `hints' field - * depending on the glyph's script. - */ - typedef struct AF_OutlineRec_ - { - FT_Face face; - FT_Outline outline; - FT_UInt outline_resolution; - - FT_Int advance; - FT_UInt metrics_resolution; - - AF_GlyphHints hints; - - } AF_OutlineRec; - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** S C A L E R S *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - /* - * A scaler models the target pixel device that will receive the - * auto-hinted glyph image. - */ - - typedef enum AF_ScalerFlags_ - { - AF_SCALER_FLAG_NO_HORIZONTAL = 1, /* disable horizontal hinting */ - AF_SCALER_FLAG_NO_VERTICAL = 2, /* disable vertical hinting */ - AF_SCALER_FLAG_NO_ADVANCE = 4 /* disable advance hinting */ - - } AF_ScalerFlags; - - - typedef struct AF_ScalerRec_ - { - FT_Face face; /* source font face */ - FT_Fixed x_scale; /* from font units to 1/64th device pixels */ - FT_Fixed y_scale; /* from font units to 1/64th device pixels */ - FT_Pos x_delta; /* in 1/64th device pixels */ - FT_Pos y_delta; /* in 1/64th device pixels */ - FT_Render_Mode render_mode; /* monochrome, anti-aliased, LCD, etc. */ - FT_UInt32 flags; /* additional control flags, see above */ - - } AF_ScalerRec, *AF_Scaler; - - -#define AF_SCALER_EQUAL_SCALES( a, b ) \ - ( (a)->x_scale == (b)->x_scale && \ - (a)->y_scale == (b)->y_scale && \ - (a)->x_delta == (b)->x_delta && \ - (a)->y_delta == (b)->y_delta ) - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** S C R I P T S *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - /* - * The list of know scripts. Each different script corresponds to the - * following information: - * - * - A set of Unicode ranges to test whether the face supports the - * script. - * - * - A specific global analyzer that will compute global metrics - * specific to the script. - * - * - A specific glyph analyzer that will compute segments and - * edges for each glyph covered by the script. - * - * - A specific grid-fitting algorithm that will distort the - * scaled glyph outline according to the results of the glyph - * analyzer. - * - * Note that a given analyzer and/or grid-fitting algorithm can be - * used by more than one script. - */ - - typedef enum AF_Script_ - { - AF_SCRIPT_NONE = 0, - AF_SCRIPT_LATIN = 1, - AF_SCRIPT_CJK = 2, - AF_SCRIPT_INDIC = 3, -#ifdef FT_OPTION_AUTOFIT2 - AF_SCRIPT_LATIN2, -#endif - - /* add new scripts here. Don't forget to update the list in */ - /* `afglobal.c'. */ - - AF_SCRIPT_MAX /* do not remove */ - - } AF_Script; - - - typedef struct AF_ScriptClassRec_ const* AF_ScriptClass; - - typedef struct AF_ScriptMetricsRec_ - { - AF_ScriptClass clazz; - AF_ScalerRec scaler; - - } AF_ScriptMetricsRec, *AF_ScriptMetrics; - - - /* This function parses an FT_Face to compute global metrics for - * a specific script. - */ - typedef FT_Error - (*AF_Script_InitMetricsFunc)( AF_ScriptMetrics metrics, - FT_Face face ); - - typedef void - (*AF_Script_ScaleMetricsFunc)( AF_ScriptMetrics metrics, - AF_Scaler scaler ); - - typedef void - (*AF_Script_DoneMetricsFunc)( AF_ScriptMetrics metrics ); - - - typedef FT_Error - (*AF_Script_InitHintsFunc)( AF_GlyphHints hints, - AF_ScriptMetrics metrics ); - - typedef void - (*AF_Script_ApplyHintsFunc)( AF_GlyphHints hints, - FT_Outline* outline, - AF_ScriptMetrics metrics ); - - - typedef struct AF_Script_UniRangeRec_ - { - FT_UInt32 first; - FT_UInt32 last; - - } AF_Script_UniRangeRec; - - typedef const AF_Script_UniRangeRec *AF_Script_UniRange; - - - typedef struct AF_ScriptClassRec_ - { - AF_Script script; - AF_Script_UniRange script_uni_ranges; /* last must be { 0, 0 } */ - - FT_UInt script_metrics_size; - AF_Script_InitMetricsFunc script_metrics_init; - AF_Script_ScaleMetricsFunc script_metrics_scale; - AF_Script_DoneMetricsFunc script_metrics_done; - - AF_Script_InitHintsFunc script_hints_init; - AF_Script_ApplyHintsFunc script_hints_apply; - - } AF_ScriptClassRec; - - -/* */ - -FT_END_HEADER - -#endif /* __AFTYPES_H__ */ - - -/* END */ |