RGtk2 (version 2.20.31)

pangoGlyphStringXToIndex: pangoGlyphStringXToIndex

Description

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.

Usage

pangoGlyphStringXToIndex(object, text, analysis, x.pos)

Arguments

object

[PangoGlyphString] the glyphs returned from pangoShape

text

[char] the text for the run

analysis

[PangoAnalysis] the analysis information return from pangoItemize

x.pos

[integer] the x offset (in Pango units)

Value

A list containing the following elements:

index

[integer] location to store calculated byte index within text

trailing

[integer] location to store a boolean indicating whether the user clicked on the leading or trailing edge of the character.