Typical values are: 0, 1, 1.5, 2. The default values is 0.
If factor is non-zero, lines are placed so that
baseline2 = baseline1 + factor * height2
where height2 is the line height of the second line
(as determined by the font(s)). In this case, the spacing
set with pango.layout.Layout.setSpacing is ignored.
If factor is zero (the default), spacing is applied as before.
Note: for semantics that are closer to the CSS line-height
property, see funcPango.attr_line_height_new.
Sets a factor for line spacing.
Typical values are: 0, 1, 1.5, 2. The default values is 0.
If factor is non-zero, lines are placed so that
baseline2 = baseline1 + factor * height2
where height2 is the line height of the second line (as determined by the font(s)). In this case, the spacing set with pango.layout.Layout.setSpacing is ignored.
If factor is zero (the default), spacing is applied as before.
Note: for semantics that are closer to the CSS line-height property, see funcPango.attr_line_height_new.