ref: c18c1882c22593c3c51d1d0958493c89a567545c
dir: /src/autofit/afcjk.h/
/***************************************************************************/ /* */ /* afcjk.h */ /* */ /* Auto-fitter hinting routines for CJK script (specification). */ /* */ /* Copyright 2006, 2007, 2011 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. */ /* */ /***************************************************************************/ #ifndef __AFCJK_H__ #define __AFCJK_H__ #include "afhints.h" #include "aflatin.h" FT_BEGIN_HEADER /* the CJK-specific script class */ AF_DECLARE_SCRIPT_CLASS(af_cjk_script_class) /* CJK (global) metrics management */ /* * CJK glyphs tend to fill the square. So we have both vertical and * horizontal blue zones. But some glyphs have flat bounding strokes that * leave some space between neighbour glyphs. */ enum { AF_CJK_BLUE_TOP, AF_CJK_BLUE_BOTTOM, AF_CJK_BLUE_LEFT, AF_CJK_BLUE_RIGHT, AF_CJK_BLUE_MAX }; #define AF_CJK_MAX_WIDTHS 16 #define AF_CJK_MAX_BLUES AF_CJK_BLUE_MAX enum { AF_CJK_BLUE_ACTIVE = 1 << 0, AF_CJK_BLUE_IS_TOP = 1 << 1, AF_CJK_BLUE_IS_RIGHT = 1 << 2, AF_CJK_BLUE_ADJUSTMENT = 1 << 3, /* used for scale adjustment */ /* optimization */ AF_CJK_BLUE_FLAG_MAX }; typedef struct AF_CJKBlueRec_ { AF_WidthRec ref; AF_WidthRec shoot; /* undershoot */ FT_UInt flags; } AF_CJKBlueRec, *AF_CJKBlue; typedef struct AF_CJKAxisRec_ { FT_Fixed scale; FT_Pos delta; FT_UInt width_count; AF_WidthRec widths[AF_CJK_MAX_WIDTHS]; FT_Pos edge_distance_threshold; FT_Pos standard_width; FT_Bool extra_light; /* used for horizontal metrics too for CJK */ FT_Bool control_overshoot; FT_UInt blue_count; AF_CJKBlueRec blues[AF_CJK_BLUE_MAX]; FT_Fixed org_scale; FT_Pos org_delta; } AF_CJKAxisRec, *AF_CJKAxis; typedef struct AF_CJKMetricsRec_ { AF_ScriptMetricsRec root; FT_UInt units_per_em; AF_CJKAxisRec axis[AF_DIMENSION_MAX]; } AF_CJKMetricsRec, *AF_CJKMetrics; FT_LOCAL( FT_Error ) af_cjk_metrics_init( AF_CJKMetrics metrics, FT_Face face ); FT_LOCAL( void ) af_cjk_metrics_scale( AF_CJKMetrics metrics, AF_Scaler scaler ); FT_LOCAL( FT_Error ) af_cjk_hints_init( AF_GlyphHints hints, AF_CJKMetrics metrics ); FT_LOCAL( FT_Error ) af_cjk_hints_apply( AF_GlyphHints hints, FT_Outline* outline, AF_CJKMetrics metrics ); /* Shared. called from afindic.c */ FT_LOCAL( void ) af_cjk_metrics_check_digits( AF_CJKMetrics metrics, FT_Face face ); FT_LOCAL( void ) af_cjk_metrics_init_widths( AF_CJKMetrics metrics, FT_Face face, FT_ULong charcode ); /* */ FT_END_HEADER #endif /* __AFCJK_H__ */ /* END */