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authorchai <chaifix@163.com>2018-05-31 08:12:40 +0800
committerchai <chaifix@163.com>2018-05-31 08:12:40 +0800
commitad8ffb96789f90180982b344540870a2d4e2d60b (patch)
tree2bf2e124cb0130acaad1dcce2034ff2847b3d0a2 /3rdparty/freetype/src/autofit/afglobal.h
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+/***************************************************************************/
+/* */
+/* afglobal.h */
+/* */
+/* Auto-fitter routines to compute global hinting values */
+/* (specification). */
+/* */
+/* Copyright 2003-2005, 2007, 2009, 2011-2012 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 __AFGLOBAL_H__
+#define __AFGLOBAL_H__
+
+
+#include "aftypes.h"
+#include "afmodule.h"
+
+
+FT_BEGIN_HEADER
+
+
+ /*
+ * Default values and flags for both autofitter globals (found in
+ * AF_ModuleRec) and face globals (in AF_FaceGlobalsRec).
+ */
+
+ /* index of fallback script in `af_script_classes' */
+#define AF_SCRIPT_FALLBACK 2
+ /* a bit mask indicating an uncovered glyph */
+#define AF_SCRIPT_NONE 0x7F
+ /* if this flag is set, we have an ASCII digit */
+#define AF_DIGIT 0x80
+
+ /* `increase-x-height' property */
+#define AF_PROP_INCREASE_X_HEIGHT_MIN 6
+#define AF_PROP_INCREASE_X_HEIGHT_MAX 0
+
+
+ /************************************************************************/
+ /************************************************************************/
+ /***** *****/
+ /***** F A C E G L O B A L S *****/
+ /***** *****/
+ /************************************************************************/
+ /************************************************************************/
+
+
+ /*
+ * Note that glyph_scripts[] is used to map each glyph into
+ * an index into the `af_script_classes' array.
+ *
+ */
+ typedef struct AF_FaceGlobalsRec_
+ {
+ FT_Face face;
+ FT_Long glyph_count; /* same as face->num_glyphs */
+ FT_Byte* glyph_scripts;
+
+ /* per-face auto-hinter properties */
+ FT_UInt increase_x_height;
+
+ AF_ScriptMetrics metrics[AF_SCRIPT_MAX];
+
+ AF_Module module; /* to access global properties */
+
+ } AF_FaceGlobalsRec;
+
+
+ /*
+ * model the global hints data for a given face, decomposed into
+ * script-specific items
+ */
+
+ FT_LOCAL( FT_Error )
+ af_face_globals_new( FT_Face face,
+ AF_FaceGlobals *aglobals,
+ AF_Module module );
+
+ FT_LOCAL( FT_Error )
+ af_face_globals_get_metrics( AF_FaceGlobals globals,
+ FT_UInt gindex,
+ FT_UInt options,
+ AF_ScriptMetrics *ametrics );
+
+ FT_LOCAL( void )
+ af_face_globals_free( AF_FaceGlobals globals );
+
+ FT_LOCAL_DEF( FT_Bool )
+ af_face_globals_is_digit( AF_FaceGlobals globals,
+ FT_UInt gindex );
+
+ /* */
+
+
+FT_END_HEADER
+
+#endif /* __AFGLOBAL_H__ */
+
+
+/* END */