The PangoGravity type represents the orientation of glyphs in a segment of text. This is useful when rendering vertical text layouts. In those situations, the layout is rotated using a non-identity PangoMatrix, and then glyph orientation is controlled using PangoGravity Not every value in this enumeration makes sense for every usage of PangoGravity; for example, PANGO_GRAVITY_AUTO only can be passed to Context.setBaseGravity and can only be returned by Context.getBaseGravity.
See also: PangoGravityHint
Glyphs stand upright (default)
Glyphs are rotated 90 degrees clockwise
Glyphs are upside-down
Glyphs are rotated 90 degrees counter-clockwise
Gravity is resolved from the context matrix