getPixelExtents
Computes the logical and ink extents of @layout_line in device units.
This function just calls method@Pango.LayoutLine.get_extents followed by two func@extents_to_pixels calls, rounding @ink_rect and @logical_rect such that the rounded rectangles fully contain the unrounded one (that is, passes them as first argument to func@extents_to_pixels).
Parameters
inkRect
rectangle used to store the extents of the glyph string as drawn
logicalRect
rectangle used to store the logical extents of the glyph string