| /***************************************************************************/ |
| /* */ |
| /* afblue.h */ |
| /* */ |
| /* Auto-fitter data for blue strings (specification). */ |
| /* */ |
| /* Copyright 2013-2015 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 __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 ) \ |
| 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 ); \ |
| } |
| |
| |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /***** *****/ |
| /***** 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_NEUTRAL ( 1U << 1 ) |
| #define AF_BLUE_PROPERTY_LATIN_X_HEIGHT ( 1U << 2 ) |
| #define AF_BLUE_PROPERTY_LATIN_LONG ( 1U << 3 ) |
| |
| #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 */ |
