Convert from x offset to character position. Character positions are computed by dividing up each cluster into equal portions. In scripts where positioning within a cluster is not allowed (such as Thai), the returned value may not be a valid cursor position; the caller must combine the result with the logical attributes for the text to compute the valid cursor position.
the text for the run
the number of bytes (not characters) in text.
the analysis information return from pango_itemize()
the x offset (in Pango units)
location to store calculated byte index within text
location to store a boolean indicating whether the user clicked on the leading or trailing edge of the character.