forked from minhngoc25a/freetype2
142 lines
5.4 KiB
Plaintext
142 lines
5.4 KiB
Plaintext
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/***************************************************************************/
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/* */
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/* afblue.h */
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/* */
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/* Auto-fitter data for blue strings (specification). */
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/* */
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/* Copyright 2013 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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#ifndef __AFBLUE_H__
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#define __AFBLUE_H__
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FT_BEGIN_HEADER
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/* an auxiliary macro to decode a UTF-8 character -- since we only use */
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/* hard-coded, self-converted data, no error checking is performed */
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#define GET_UTF8_CHAR( ch, p ) \
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ch = *p++; \
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if ( ch >= 0x80 ) \
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{ \
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FT_UInt len; \
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\
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\
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if ( ch < 0xE0 ) \
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{ \
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len = 1; \
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ch &= 0x1F; \
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} \
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else if ( ch < 0xF0 ) \
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{ \
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len = 2; \
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ch &= 0x0F; \
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} \
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else \
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{ \
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len = 3; \
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ch &= 0x07; \
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} \
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\
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for ( ; len > 0; len-- ) \
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ch = ( ch << 6 ) | ( *p++ & 0x3F ); \
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}
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/*************************************************************************/
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/*************************************************************************/
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/***** *****/
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/***** B L U E S T R I N G S *****/
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/***** *****/
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/*************************************************************************/
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/*************************************************************************/
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/* At the bottommost level, we define strings for finding blue zones. */
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#define AF_BLUE_STRING_MAX_LEN @AF_BLUE_STRING_MAX_LEN@
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/* The AF_Blue_String enumeration values are offsets into the */
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/* `af_blue_strings' array. */
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typedef enum AF_Blue_String_
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{
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@AF_BLUE_STRING_ENUM@
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AF_BLUE_STRING_MAX /* do not remove */
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} AF_Blue_String;
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FT_LOCAL_ARRAY( char )
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af_blue_strings[];
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/*************************************************************************/
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/*************************************************************************/
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/***** *****/
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/***** B L U E S T R I N G S E T S *****/
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/***** *****/
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/*************************************************************************/
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/*************************************************************************/
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/* The next level is to group blue strings into script-specific sets. */
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/* Properties are specific to a writing system. We assume that a given */
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/* blue string can't be used in more than a single writing system, which */
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/* is a safe bet. */
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#define AF_BLUE_PROPERTY_LATIN_TOP ( 1 << 0 )
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#define AF_BLUE_PROPERTY_LATIN_SMALL_TOP ( 1 << 1 )
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#define AF_BLUE_PROPERTY_CJK_HORIZ ( 1 << 0 )
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#define AF_BLUE_PROPERTY_CJK_TOP ( 1 << 1 )
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#define AF_BLUE_PROPERTY_CJK_FILL ( 1 << 2 )
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#define AF_BLUE_PROPERTY_CJK_RIGHT AF_BLUE_PROPERTY_CJK_TOP
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#define AF_BLUE_STRINGSET_MAX_LEN @AF_BLUE_STRINGSET_MAX_LEN@
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/* The AF_Blue_Stringset enumeration values are offsets into the */
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/* `af_blue_stringsets' array. */
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typedef enum AF_Blue_Stringset_
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{
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@AF_BLUE_STRINGSET_ENUM@
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AF_BLUE_STRINGSET_MAX /* do not remove */
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} AF_Blue_Stringset;
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typedef struct AF_Blue_StringRec_
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{
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AF_Blue_String string;
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FT_UShort properties;
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} AF_Blue_StringRec;
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FT_LOCAL_ARRAY( AF_Blue_StringRec )
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af_blue_stringsets[];
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/* */
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FT_END_HEADER
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#endif /* __AFBLUE_H__ */
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/* END */
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