index_to_line_x

Description:

public void index_to_line_x (int index_, bool trailing, out int line, out int x_pos)

Converts from byte index_ within the this to line and X position.

The X position is measured from the left edge of the line.

this	a `PangoLayout`
index_	the byte index of a grapheme within the layout
trailing	an integer indicating the edge of the grapheme to retrieve the position of. If > 0, the trailing edge of the grapheme, if 0, the leading of the grapheme
line	location to store resulting line index. (which will between 0 and pango_layout_get_line_count(layout) - 1)
x_pos	location to store resulting position within line (pango_scale units per device unit)