horizontal displacement to apply after th glyph item. Positive values shift right
corresponding pango.glyph_string.GlyphString
corresponding pango.item.Item
horizontal displacement to apply before the glyph item. Positive values shift right
shift of the baseline, relative to the baseline of the containing line. Positive values shift upwards
A pango.glyph_item.GlyphItem is a pair of a pango.item.Item and the glyphs resulting from shaping the items text.
As an example of the usage of pango.glyph_item.GlyphItem, the results of shaping text with pango.layout.Layout is a list of pango.layout_line.LayoutLine, each of which contains a list of pango.glyph_item.GlyphItem.