/* m17n-flt.h -- header file for the FLT API of the m17n library.
- Copyright (C) 2007
+ Copyright (C) 2007, 2008, 2009, 2010
National Institute of Advanced Industrial Science and Technology (AIST)
Registration Number H15PRO112
fractional pixel format. */
/***ja ½Ä½ñ¤»þ¤ÎÁ÷¤ê¹â¤ò 26.6 fractional pixel format ¤Çɽ¸½¤·¤¿¤â¤Î¡£ */
int yadv;
+ /* @{ */
/***en Ink metrics of the glyph expressed in 26.6 fractional pixel
format. */
/***ja ¤³¤Î¥°¥ê¥Õ¤Î¥¤¥ó¥¯¥á¥È¥ê¥Ã¥¯¤ò 26.6 fractional pixel format
¤Çɽ¸½¤·¤¿¤â¤Î¡£ */
int ascent, descent, lbearing, rbearing;
+ /* @} */
+ /* @{ */
/***en Horizontal and vertical adjustments for the glyph positioning
expressed in 26.6 fractional pixel format. */
/***ja ¥°¥ê¥Õ°ÌÃÖ·è¤á¤ÎºÝ¤Î¿åÊ¿¡¦¿âľĴÀ°Ãͤò¡¢
26.6 fractional pixel format ¤Çɽ¸½¤·¤¿¤â¤Î¡£ */
int xoff, yoff;
+ /* @} */
/***en Flag to tell whether the member \<code\> has already been set
to a glyph ID in the font. */
/***ja ¥á¥ó¥Ð¡¼ \<code\> ¤Ë´û¤Ë¥°¥ê¥Õ ID
The type #MFLTGlyphAdjustment is the structure to store
information about a glyph metrics/position adjustment. It is
- given to the callback function #drive_otf of #MFLTFont. */
+ given to the callback function @b drive_otf of #MFLTFont. */
/***ja
@brief ¥°¥ê¥Õ°ÌÃÖÄ´À°¾ðÊó¤Î¤¿¤á¤Î·¿.
·¿ #MFLTGlyphAdjustment
¤Ï¡¢¥°¥ê¥Õ¤Î¥á¥È¥ê¥Ã¥¯/°ÌÃÖ¤ÎÄ´À°¤Ë´Ø¤¹¤ë¾ðÊó¤ò³ÊǼ¤¹¤ë¤¿¤á¤Î¹½Â¤ÂΤǤ¢¤ê¡¢
- #MFLTFont ¤Î callback ´Ø¿ô #drive_otf ¤ËÅϤµ¤ì¤ë¡£ */
+ #MFLTFont ¤Î callback ´Ø¿ô @b drive_otf ¤ËÅϤµ¤ì¤ë¡£ */
typedef struct
{
+ /* @{ */
/***en Adjustments for advance width for horizontal layout and
advance height for vertical layout expressed in 26.6 fractional
pixel format. */
/***ja ¿åÊ¿¡¦¿âľÊý¸þ¤ÎÁ÷¤êÎ̤ÎÄ´À°Ãͤò 26.6 fractional pixel format
¤Çɽ¸½¤·¤¿¤â¤Î¡£ */
int xadv, yadv;
+ /* @} */
+ /* @{ */
/***en Horizontal and vertical adjustments for glyph positioning
expressed in 26.6 fractional pixel format. */
/***ja ¥°¥ê¥Õ°ÌÃÖ·è¤á¤¿¤á¤Î¿åÊ¿¡¦¿âľĴÀ°Ãͤò 26.6 fractional pixel
format ¤Çɽ¸½¤·¤¿¤â¤Î¡£ */
int xoff, yoff;
+ /* @} */
/***en Number of glyphs to go back for drawing a glyph. */
/***ja ¥°¥ê¥ÕÉÁ²è¤Î¤¿¤á¤ËÌá¤ë¤Ù¤¥°¥ê¥Õ¿ô¡£ */
short back;
typedef struct
{
/***en Unique symbol representing the spec. This is the same as the
- #OTF-SPEC of the FLT. */
+ @ref OTF-SPEC of the FLT. */
/***ja ¤³¤Î»ÅÍͤòɽ¤ï¤¹¥æ¥Ë¡¼¥¯¤Ê¥·¥ó¥Ü¥ë¡£
- FLT ¤Î #OTF-SPEC ¤ÈƱ°ì¤ÎÃͤǤ¢¤ë¡£ */
+ FLT ¤Î @ref OTF-SPEC ¤ÈƱ°ì¤ÎÃͤǤ¢¤ë¡£ */
MSymbol sym;
+ /* @{ */
/***en Tags for script and language system. */
/***ja ¥¹¥¯¥ê¥×¥È¤ª¤è¤Ó¸À¸ì¥·¥¹¥Æ¥à¤Î¥¿¥°¡£ */
unsigned int script, langsys;
-
- /***en Array of GSUB (1st element) and GPOS (2nd element) features.
- Each array is terminated by 0. If an element is 0xFFFFFFFF
- apply the previous features in that order, and apply all the
- other features except those that appear in the following elements.
- It may be NULL if there are no features. */
- /***ja GSUB ¥Õ¥£¡¼¥Á¥ã¡¼¤òÂè1Í×ÁÇ¡¢GPOS ¥Õ¥£¡¼¥Á¥ã¡¼¤òÂè2Í×ÁǤȤ¹¤ëÇÛ
- Îó¡£³ÆÇÛÎó¤ÎËöÈø¤Ï0¤Ç¼¨¤µ¤ì¤ë¡£¤â¤·¤¢¤ëÍ×ÁǤ¬ 0xFFFFFFFF¤Ê¤é¤Ð¡¢
- °ÊÁ°¤ÎÁ´¥Õ¥£¡¼¥Á¥ã¡¼¤ò¤½¤Î½ç½ø¤ÇŬÍѤ·¡¢¹¹¤Ë°Ê¹ß¤ÎÍ×ÁǤȤ·¤Æ¸½¤ï
- ¤ì¤ë¥Õ¥£¥Á¥ã¡¼°Ê³°¤Î¤¹¤Ù¤Æ¤òŬÍѤ¹¤ë¡£¥Õ¥£¡¼¥Á¥ã¡¼¤¬1¤Ä¤â¤Ê¤¤¾ì¹ç
- ¤Ï NULL ¤Ç¤â¤è¤¤¡£ */
+ /* @} */
+
+ /***en Array of GSUB (1st element) and GPOS (2nd element) feature
+ tag arrays. Each array is terminated by 0. If the first
+ element is 0xFFFFFFFF, apply all the features except those that
+ appear in the following elements. It may be NULL if there are
+ no features. */
+ /***ja GSUB ¥Õ¥£¡¼¥Á¥ã¡¼¥¿¥°¤ÎÇÛÎó¤òÂè1Í×ÁÇ¡¢GPOS ¥Õ¥£¡¼¥Á¥ã¡¼¥¿¥°¤Î
+ ÇÛÎó¤òÂè2Í×ÁǤȤ¹¤ëÇÛÎó¡£³ÆÇÛÎó¤ÎËöÈø¤Ï0¤Ç¼¨¤µ¤ì¤ë¡£¤â¤·ºÇ½é¤ÎÍ×
+ ÁǤ¬ 0xFFFFFFFF¤Ê¤é¤Ð¡¢°Ê¹ß¤ÎÍ×ÁǤȤ·¤Æ¸½¤ï¤ì¤ë¥Õ¥£¥Á¥ã¡¼°Ê³°¤Î¤¹
+ ¤Ù¤Æ¤òŬÍѤ¹¤ë¡£¥Õ¥£¡¼¥Á¥ã¡¼¤¬1¤Ä¤â¤Ê¤¤¾ì¹ç¤Ï NULL ¤Ç¤â¤è¤¤¡£ */
unsigned int *features[2];
} MFLTOtfSpec;
@brief Type of font to be used by the FLT driver.
The type #MFLTFont is the structure that contains information
- about a font used by the FLT driver. */
+ about a font used by the FLT driver. Usually, an application
+ should prepare a bigger structure whose first element is MFLTFont
+ and has more information about the font that is used by callback
+ funcitons, and give that structure to mflt functions by coercing
+ it to MFLTFont. It is assured that callback functions can safely
+ coerce MFLTFont back to the original structure. */
/***ja
@brief FLT ¥É¥é¥¤¥Ð¤¬»È¤¦¥Õ¥©¥ó¥È¤Î·¿.
·¿ #MFLTFont ¤Ï¡¢FLT¥É¥é¥¤¥Ð¤¬»È¤¦¥Õ¥©¥ó¥È¤Ë´Ø¤¹¤ë¾ðÊó¤ò³ÊǼ¤¹¤ë¤¿
- ¤á¤Î¹½Â¤ÂΤǤ¢¤ë¡£ */
+ ¤á¤Î¹½Â¤ÂΤǤ¢¤ë¡£Ä̾異¥×¥ê¥±¡¼¥·¥ç¥ó¤ÏºÇ½é¤ÎÍ×ÁǤ¬ MFLTFont ¤Ç¡¢
+ »Ä¤ê¤ÎÍ×ÁǤËcallback´Ø¿ô¤¬ÍøÍѤ¹¤ë¥Õ¥©¥ó¥È¾ðÊó¤ò»ý¤Ã¤¿¡¢¤è¤êÂ礤Ê
+ ¹½Â¤ÂΤòÍÑ°Õ¤·¡¢¤½¤ì¤ò MFLTFont ¤Ë coerce ¤·¤Æ mflt ¤Î³Æ´Ø¿ô¤ËÅϤ¹¡£
+ ³Æcallback´Ø¿ô¤Ï MFLTFont ¤ò¸µ¤Î¹½Â¤ÂÎ¤Ë coerce ¤·Ä¾¤¹¤³¤È¤¬¤Ç¤¤ë
+ ¤³¤È¤¬Êݾڤµ¤ì¤Æ¤¤¤ë¡£ */
typedef struct _MFLTFont
{
¤¤¾ì¹ç (¤¿¤È¤¨¤Ð OpenType¥Õ¥©¥ó¥È¤Î¾ì¹ç¤Ê¤É) ¤Ï¡¢#Mnil ¤Ç¤è¤¤¡£ */
MSymbol family;
- /***en Horizontal and vertical font sizes in pixels per EM. */
- /***ja ¥Õ¥©¥ó¥È¤Î¿åÊ¿¡¦¿âľ¥µ¥¤¥º¤ò pixels per EM ¤Çɽ¸½¤·¤¿¤â¤Î¡£ */
- int x_ppem, y_ppem;
+ /***en Horizontal font sizes in pixels per EM. */
+ /***ja ¥Õ¥©¥ó¥È¤Î¿åÊ¿¥µ¥¤¥º¤ò pixels per EM ¤Çɽ¸½¤·¤¿¤â¤Î¡£ */
+ int x_ppem;
+ /***en Vertical font sizes in pixels per EM. */
+ /***ja ¥Õ¥©¥ó¥È¤Î¿âľ¥µ¥¤¥º¤ò pixels per EM ¤Çɽ¸½¤·¤¿¤â¤Î¡£ */
+ int y_ppem;
/***en Callback function to get glyph IDs for glyphs between FROM
(inclusive) and TO (exclusive) of GSTRING. If the member \<encoded\>
extern int mflt_run (MFLTGlyphString *gstring, int from, int to,
MFLTFont *font, MFLT *flt);
+extern int mflt_enable_new_feature;
+
+extern MSymbol (*mflt_font_id) (MFLTFont *font);
+
+extern int (*mflt_iterate_otf_feature) (MFLTFont *font,
+ MFLTOtfSpec *spec,
+ int from, int to,
+ unsigned char *table);
+
+extern int (*mflt_try_otf) (struct _MFLTFont *font, MFLTOtfSpec *spec,
+ MFLTGlyphString *gstring, int from, int to);
+
/*=*/
/*** @} */
projects / m17n / m17n-lib.git / blobdiff