diff options
Diffstat (limited to 'src/3rdparty/freetype/src/autofit/afcjk.h')
| -rw-r--r-- | src/3rdparty/freetype/src/autofit/afcjk.h | 113 |
1 files changed, 100 insertions, 13 deletions
diff --git a/src/3rdparty/freetype/src/autofit/afcjk.h b/src/3rdparty/freetype/src/autofit/afcjk.h index 0b20d4ae35..4dd4f39177 100644 --- a/src/3rdparty/freetype/src/autofit/afcjk.h +++ b/src/3rdparty/freetype/src/autofit/afcjk.h @@ -2,9 +2,9 @@ /* */ /* afcjk.h */ /* */ -/* Auto-fitter hinting routines for CJK script (specification). */ +/* Auto-fitter hinting routines for CJK writing system (specification). */ /* */ -/* Copyright 2006, 2007 by */ +/* Copyright 2006, 2007, 2011-2014 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ @@ -20,32 +20,119 @@ #define __AFCJK_H__ #include "afhints.h" +#include "aflatin.h" FT_BEGIN_HEADER - /* the CJK-specific script class */ + /* the CJK-specific writing system */ - AF_DECLARE_SCRIPT_CLASS(af_cjk_script_class) + AF_DECLARE_WRITING_SYSTEM_CLASS( af_cjk_writing_system_class ) + /*************************************************************************/ + /*************************************************************************/ + /***** *****/ + /***** C J K G L O B A L M E T R I C S *****/ + /***** *****/ + /*************************************************************************/ + /*************************************************************************/ + + + /* + * 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. + */ + +#define AF_CJK_IS_TOP_BLUE( b ) \ + ( (b)->properties & AF_BLUE_PROPERTY_CJK_TOP ) +#define AF_CJK_IS_HORIZ_BLUE( b ) \ + ( (b)->properties & AF_BLUE_PROPERTY_CJK_HORIZ ) +#define AF_CJK_IS_RIGHT_BLUE AF_CJK_IS_TOP_BLUE + +#define AF_CJK_MAX_WIDTHS 16 + + + enum + { + AF_CJK_BLUE_ACTIVE = 1 << 0, /* set if zone height is <= 3/4px */ + AF_CJK_BLUE_TOP = 1 << 1, /* result of AF_CJK_IS_TOP_BLUE */ + AF_CJK_BLUE_ADJUSTMENT = 1 << 2, /* 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; /* number of used widths */ + AF_WidthRec widths[AF_CJK_MAX_WIDTHS]; /* widths array */ + FT_Pos edge_distance_threshold; /* used for creating edges */ + FT_Pos standard_width; /* the default stem thickness */ + FT_Bool extra_light; /* is standard width very light? */ + + /* used for horizontal metrics too for CJK */ + FT_Bool control_overshoot; + FT_UInt blue_count; + AF_CJKBlueRec blues[AF_BLUE_STRINGSET_MAX]; + + FT_Fixed org_scale; + FT_Pos org_delta; + + } AF_CJKAxisRec, *AF_CJKAxis; + + + typedef struct AF_CJKMetricsRec_ + { + AF_StyleMetricsRec root; + FT_UInt units_per_em; + AF_CJKAxisRec axis[AF_DIMENSION_MAX]; + + } AF_CJKMetricsRec, *AF_CJKMetrics; + + +#ifdef AF_CONFIG_OPTION_CJK FT_LOCAL( FT_Error ) - af_cjk_metrics_init( AF_LatinMetrics metrics, - FT_Face face ); + af_cjk_metrics_init( AF_CJKMetrics metrics, + FT_Face face ); FT_LOCAL( void ) - af_cjk_metrics_scale( AF_LatinMetrics metrics, - AF_Scaler scaler ); + af_cjk_metrics_scale( AF_CJKMetrics metrics, + AF_Scaler scaler ); FT_LOCAL( FT_Error ) - af_cjk_hints_init( AF_GlyphHints hints, - AF_LatinMetrics metrics ); + 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_LatinMetrics metrics ); + 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 ); +#endif /* AF_CONFIG_OPTION_CJK */ + /* */ |