diff options
Diffstat (limited to 'pango/pango-bidi-type.h')
-rw-r--r-- | pango/pango-bidi-type.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/pango/pango-bidi-type.h b/pango/pango-bidi-type.h index a86dd587..c53b1704 100644 --- a/pango/pango-bidi-type.h +++ b/pango/pango-bidi-type.h @@ -83,6 +83,53 @@ typedef enum { PangoBidiType pango_bidi_type_for_unichar (gunichar ch) G_GNUC_CONST; +/** + * PangoDirection: + * @PANGO_DIRECTION_LTR: A strong left-to-right direction + * @PANGO_DIRECTION_RTL: A strong right-to-left direction + * @PANGO_DIRECTION_TTB_LTR: Deprecated value; treated the + * same as %PANGO_DIRECTION_RTL. + * @PANGO_DIRECTION_TTB_RTL: Deprecated value; treated the + * same as %PANGO_DIRECTION_LTR + * @PANGO_DIRECTION_WEAK_LTR: A weak left-to-right direction + * @PANGO_DIRECTION_WEAK_RTL: A weak right-to-left direction + * @PANGO_DIRECTION_NEUTRAL: No direction specified + * + * The #PangoDirection type represents a direction in the + * Unicode bidirectional algorithm; not every value in this + * enumeration makes sense for every usage of #PangoDirection; + * for example, the return value of pango_unichar_direction() + * and pango_find_base_dir() cannot be %PANGO_DIRECTION_WEAK_LTR + * or %PANGO_DIRECTION_WEAK_RTL, since every character is either + * neutral or has a strong direction; on the other hand + * %PANGO_DIRECTION_NEUTRAL doesn't make sense to pass + * to pango_itemize_with_base_dir(). + * + * The %PANGO_DIRECTION_TTB_LTR, %PANGO_DIRECTION_TTB_RTL + * values come from an earlier interpretation of this + * enumeration as the writing direction of a block of + * text and are no longer used; See #PangoGravity for how + * vertical text is handled in Pango. + **/ +typedef enum { + PANGO_DIRECTION_LTR, + PANGO_DIRECTION_RTL, + PANGO_DIRECTION_TTB_LTR, + PANGO_DIRECTION_TTB_RTL, + PANGO_DIRECTION_WEAK_LTR, + PANGO_DIRECTION_WEAK_RTL, + PANGO_DIRECTION_NEUTRAL +} PangoDirection; + +PangoDirection pango_unichar_direction (gunichar ch) G_GNUC_CONST; +PangoDirection pango_find_base_dir (const gchar *text, + gint length); + +#ifndef PANGO_DISABLE_DEPRECATED +gboolean pango_get_mirror_char (gunichar ch, + gunichar *mirrored_ch); +#endif + G_END_DECLS #endif /* __PANGO_BIDI_TYPE_H__ */ |