Direction#
- class Direction#
PangoDirection 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 unichar_direction
and 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 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.
If you are interested in text direction, you should really use fribidi
directly. PangoDirection is only retained because it is used in some
public apis.