pangoGlyphStringXToIndex {RGtk2}R Documentation

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 return from pangoShape
text [char] the text for the run
analysis [PangoAnalysis] the analysis information return from pangoItemize
x.pos [integer] the x offset (in integer)

Value

A list containing the following elements:

index [integer] location to store calculated byte index within text
trailing [integer] location to store a integer indicating where whether the user clicked on the leading or trailing edge of the character.

Author(s)

Derived by RGtkGen from GTK+ documentation


[Package RGtk2 version 2.12.5-3 Index]