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authorAkira Kakuto <kakuto@fuk.kindai.ac.jp>2015-12-28 12:09:41 +0000
committerAkira Kakuto <kakuto@fuk.kindai.ac.jp>2015-12-28 12:09:41 +0000
commit1fff76f0c267ade1406b5a8a9a8c48c7cab1ad4f (patch)
tree7701270ffe1ed4b8ec08208b9ccdf2afb0b5f957 /Build/source/libs/freetype2/freetype-src/src/autofit/afcjk.h
parent28d16176960e908983aaa3926faddc374209de78 (diff)
freetype-2.6.2
git-svn-id: svn://tug.org/texlive/trunk@39211 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/freetype2/freetype-src/src/autofit/afcjk.h')
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diff --git a/Build/source/libs/freetype2/freetype-src/src/autofit/afcjk.h b/Build/source/libs/freetype2/freetype-src/src/autofit/afcjk.h
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+/***************************************************************************/
+/* */
+/* afcjk.h */
+/* */
+/* Auto-fitter hinting routines for CJK writing system (specification). */
+/* */
+/* Copyright 2006-2015 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 writing system */
+
+ 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
+
+
+#define AF_CJK_BLUE_ACTIVE ( 1U << 0 ) /* zone height is <= 3/4px */
+#define AF_CJK_BLUE_TOP ( 1U << 1 ) /* result of AF_CJK_IS_TOP_BLUE */
+#define AF_CJK_BLUE_ADJUSTMENT ( 1U << 2 ) /* used for scale adjustment */
+ /* optimization */
+
+
+ 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_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( FT_UInt glyph_index,
+ 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 */
+
+
+/* */
+
+FT_END_HEADER
+
+#endif /* __AFCJK_H__ */
+
+
+/* END */