/* otf.h -- Header file for libotf (OpenType font library).
-Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009
+Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
National Institute of Advanced Industrial Science and Technology (AIST)
Registration Number H15PRO167
#endif
/* Version name of this library. */
-#define LIBOTF_VERSION "0.9.10"
+#define LIBOTF_VERSION "0.9.12"
/* Major version number. */
#define LIBOTF_MAJOR_VERSION 0
/* Minor version number. */
#define LIBOTF_MINOR_VERSION 9
/* Release (i.e. patch level) number. */
-#define LIBOTF_RELEASE_NUMBER 10
+#define LIBOTF_RELEASE_NUMBER 12
/***
Table of contents:
/***
Check supported features.
- The OTF_check_features() function checks if or not the OpenType
- font $OTF has, for $SCRIPT and $LANGUAGE, all features in the
- array $FEATURES. The array size is $N_FEATURES. If $LANGUAGE is
- zero or $OTF doesn't have LangSys for $SCRIPT, the default LangSys
- is checked.
+ The OTF_check_features() function checks whether or not the
+ OpenType font $OTF has, for $SCRIPT and $LANGUAGE, all features in
+ the array $FEATURES. The array size is $N_FEATURES. If $LANGUAGE
+ is zero or $OTF doesn't have LangSys for $SCRIPT, the default
+ LangSys is checked.
If $OTF has all the features, return 1. Otherwise, return 0. If
an error occurs, return -1, and set the variable OTF_error to
correct value from the above character code via cmap if such a
glyph is available in the font.
- The function OTF_drive_gpos2 may insert a glyph whose glyph_id is
- 0 but positioning_type is positive. It is not an actual glyph
- but just contains positioning information that should be
- accumulated to the positioning information of the previous
- glyphs. */
+ The functions OTF_drive_gpos2 and OTF_driver_gpos_with_log may
+ insert a glyph whose glyph_id is 0 but positioning_type is
+ positive. It is not an actual glyph but just contains
+ positioning information that should be accumulated to the
+ positioning information of the previous glyphs. */
OTF_GlyphID glyph_id;
/* GlyphClass of the glyph. The value is extracted from the GDEF
GDEF table. */
unsigned MarkAttachClass;
- /* Positioning format type of the glyph. The value specifies how
- the glyph positioning information is encoded in the member <f>.
- If the value is N, the union member fN, is used. If the value is
- zero, the glyph has no positioning information, i.e. it should be
- drawn at the normal position. */
- int positioning_type;
+ /* The lowest 4-bit is a positioning format type of the glyph. The
+ value specifies how the glyph positioning information is encoded
+ in the member <f>. If the value is N, the union member fN, is
+ used. If the value is zero, the glyph has no positioning
+ information, i.e. it should be drawn at the normal position.
+
+ OTF_drive_gsub, OTF_drive_gsub_alternate, OTF_drive_gpos, and
+ OTF_drive_gpos2 always sets the higher bits to zero.
+
+ OTF_drive_gsub_with_log and OTF_drive_gpos_with_log sets the
+ higher 16-bit (i.e. 5th to 20th bits) to the index number of the
+ lastly applied feature on the glyph plus one. If no feature was
+ applied, those bits are zero. */
+ unsigned int positioning_type;
union {
struct {
int from, to;
const char *script, const char *language,
const char *features);
+/***
+ Process glyph string by GSUB table with log.
+
+ This is like OTF_drive_gsub(), but records which feature is
+ applied to each glyph in the higher bits of `positioning_type'
+ member of OTF_Glyph. */
+
+extern int OTF_drive_gsub_with_log (OTF *otf, OTF_GlyphString *gstring,
+ const char *script, const char *language,
+ const char *features);
+
+
/*** (3-5) OTF_drive_gpos() */
/***
const char *script, const char *language,
const char *features);
+/***
+ Process glyph string by GPOS table with log.
+
+ This is like OTF_drive_pos_2(), but records which feature is
+ applied to each glyph in the higher bits of `positioning_type'
+ member of OTF_Glyph. */
+
+extern int OTF_drive_gpos_with_log (OTF *otf, OTF_GlyphString *gstring,
+ const char *script, const char *language,
+ const char *features);
+
+
/*** (3-6) OTF_drive_tables() */
/***
extern void *OTF_get_data (OTF *otf, char *id);
-extern OTF_Tag *OTF_get_drive_log (OTF *otf);
-
#ifdef __cplusplus
}
#endif