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Diffstat (limited to 'modules/freetype2/src/autofit/afblue.hin')
| -rw-r--r-- | modules/freetype2/src/autofit/afblue.hin | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/modules/freetype2/src/autofit/afblue.hin b/modules/freetype2/src/autofit/afblue.hin new file mode 100644 index 0000000000..6a31298e65 --- /dev/null +++ b/modules/freetype2/src/autofit/afblue.hin @@ -0,0 +1,146 @@ +/**************************************************************************** + * + * afblue.h + * + * Auto-fitter data for blue strings (specification). + * + * Copyright (C) 2013-2023 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 AFBLUE_H_ +#define AFBLUE_H_ + + +FT_BEGIN_HEADER + + + /* an auxiliary macro to decode a UTF-8 character -- since we only use */ + /* hard-coded, self-converted data, no error checking is performed */ +#define GET_UTF8_CHAR( ch, p ) \ + do \ + { \ + ch = (unsigned char)*p++; \ + if ( ch >= 0x80 ) \ + { \ + FT_UInt len_; \ + \ + \ + if ( ch < 0xE0 ) \ + { \ + len_ = 1; \ + ch &= 0x1F; \ + } \ + else if ( ch < 0xF0 ) \ + { \ + len_ = 2; \ + ch &= 0x0F; \ + } \ + else \ + { \ + len_ = 3; \ + ch &= 0x07; \ + } \ + \ + for ( ; len_ > 0; len_-- ) \ + ch = ( ch << 6 ) | ( *p++ & 0x3F ); \ + } \ + } while ( 0 ) + + + /*************************************************************************/ + /*************************************************************************/ + /***** *****/ + /***** B L U E S T R I N G S *****/ + /***** *****/ + /*************************************************************************/ + /*************************************************************************/ + + /* At the bottommost level, we define strings for finding blue zones. */ + + +#define AF_BLUE_STRING_MAX_LEN @AF_BLUE_STRING_MAX_LEN@ + + /* The AF_Blue_String enumeration values are offsets into the */ + /* `af_blue_strings' array. */ + + typedef enum AF_Blue_String_ + { +@AF_BLUE_STRING_ENUM@ + + AF_BLUE_STRING_MAX /* do not remove */ + + } AF_Blue_String; + + + FT_LOCAL_ARRAY( char ) + af_blue_strings[]; + + + /*************************************************************************/ + /*************************************************************************/ + /***** *****/ + /***** B L U E S T R I N G S E T S *****/ + /***** *****/ + /*************************************************************************/ + /*************************************************************************/ + + /* The next level is to group blue strings into style-specific sets. */ + + + /* Properties are specific to a writing system. We assume that a given */ + /* blue string can't be used in more than a single writing system, which */ + /* is a safe bet. */ +#define AF_BLUE_PROPERTY_LATIN_TOP ( 1U << 0 ) /* must have value 1 */ +#define AF_BLUE_PROPERTY_LATIN_SUB_TOP ( 1U << 1 ) +#define AF_BLUE_PROPERTY_LATIN_NEUTRAL ( 1U << 2 ) +#define AF_BLUE_PROPERTY_LATIN_X_HEIGHT ( 1U << 3 ) +#define AF_BLUE_PROPERTY_LATIN_LONG ( 1U << 4 ) + +#define AF_BLUE_PROPERTY_CJK_TOP ( 1U << 0 ) /* must have value 1 */ +#define AF_BLUE_PROPERTY_CJK_HORIZ ( 1U << 1 ) /* must have value 2 */ +#define AF_BLUE_PROPERTY_CJK_RIGHT AF_BLUE_PROPERTY_CJK_TOP + + +#define AF_BLUE_STRINGSET_MAX_LEN @AF_BLUE_STRINGSET_MAX_LEN@ + + /* The AF_Blue_Stringset enumeration values are offsets into the */ + /* `af_blue_stringsets' array. */ + + typedef enum AF_Blue_Stringset_ + { +@AF_BLUE_STRINGSET_ENUM@ + + AF_BLUE_STRINGSET_MAX /* do not remove */ + + } AF_Blue_Stringset; + + + typedef struct AF_Blue_StringRec_ + { + AF_Blue_String string; + FT_UShort properties; + + } AF_Blue_StringRec; + + + FT_LOCAL_ARRAY( AF_Blue_StringRec ) + af_blue_stringsets[]; + +/* */ + +FT_END_HEADER + + +#endif /* AFBLUE_H_ */ + + +/* END */ |