Commit b6c8772a authored by Kenichi Handa's avatar Kenichi Handa

*** empty log message ***

parent de921524
......@@ -390,17 +390,11 @@ struct font_driver
Lisp_Object (*otf_capability) P_ ((struct font *font));
/* Optional.
Drive FONT's OTF GSUB features according to GSUB_SPEC.
GSUB_SPEC is in this format (all elements are symbols):
(SCRIPT LANGSYS GSUB-FEATURE ...)
If one of GSUB-FEATURE is nil, apply all gsub features except for
already applied and listed later. For instance, if the font has
GSUB features nukt, haln, rphf, blwf, and half,
(deva nil nukt haln nil rphf)
applies nukt and haln in this order, then applies blwf and half
in the order apearing in the font. The features are of the
default langsys of `deva' script.
Apply FONT's OTF-FEATURES to the glyph string.
FEATURES specifies which OTF features to apply in this format:
(SCRIPT LANGSYS GSUB-FEATURE GPOS-FEATURE)
See the documentation of `font-drive-otf' for the detail.
This method applies the specified features to the codes in the
elements of GSTRING-IN (between FROMth and TOth). The output
......@@ -410,26 +404,9 @@ struct font_driver
Return the number of output codes. If none of the features are
applicable to the input data, return 0. If GSTRING-OUT is too
short, return -1. */
int (*otf_gsub) P_ ((struct font *font, Lisp_Object gsub_spec,
int (*otf_drive) P_ ((struct font *font, Lisp_Object features,
Lisp_Object gstring_in, int from, int to,
Lisp_Object gstring_out, int idx, int alternate_subst));
/* Optional.
Drive FONT's OTF GPOS features according to GPOS_SPEC.
GPOS_SPEC is in this format (all elements are symbols):
(SCRIPT LANGSYS GPOS-FEATURE ...)
The meaning is the same as GSUB_SPEC above.
This method applies the specified features to the codes in the
elements of GSTRING (between FROMth and TOth). The resulting
positioning information (x-offset and y-offset) is stored in the
slots of the elements.
Return 1 if at least one glyph has nonzero x-offset or y-offset.
Otherwise return 0. */
int (*otf_gpos) P_ ((struct font *font, Lisp_Object gpos_spec,
Lisp_Object gstring, int from, int to));
};
......@@ -467,8 +444,9 @@ extern int font_set_lface_from_name P_ ((FRAME_PTR f,
int force_p, int may_fail_p));
extern Lisp_Object font_find_for_lface P_ ((FRAME_PTR f, Lisp_Object *lface,
Lisp_Object spec));
extern Lisp_Object font_open_for_lface P_ ((FRAME_PTR f, Lisp_Object *lface,
Lisp_Object entity));
extern Lisp_Object font_open_for_lface P_ ((FRAME_PTR f, Lisp_Object entity,
Lisp_Object *lface,
Lisp_Object spec));
extern void font_load_for_face P_ ((FRAME_PTR f, struct face *face));
extern void font_prepare_for_face P_ ((FRAME_PTR f, struct face *face));
extern Lisp_Object font_open_by_name P_ ((FRAME_PTR f, char *name));
......@@ -499,14 +477,11 @@ extern struct font *font_prepare_composition P_ ((struct composition *cmp));
#ifdef HAVE_LIBOTF
/* This can be used as `otf_capability' method of a font-driver. */
extern Lisp_Object font_otf_capability P_ ((struct font *font));
/* This can be used as `otf_gsub' method of a font-driver. */
extern int font_otf_gsub P_ ((struct font *font, Lisp_Object gsub_spec,
/* This can be used as `otf_drive' method of a font-driver. */
extern int font_drive_otf P_ ((struct font *font, Lisp_Object otf_features,
Lisp_Object gstring_in, int from, int to,
Lisp_Object gstring_out, int idx,
int alternate_subst));
/* This can be used as `otf_gpos' method of a font-driver. */
extern int font_otf_gpos P_ ((struct font *font, Lisp_Object gpos_spec,
Lisp_Object gstring, int from, int to));
#endif /* HAVE_LIBOTF */
#ifdef HAVE_FREETYPE
......
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