PangoLayoutLine onto an GDK drawablegdkDrawLayoutLine(object, gc, x, y, line)objectGdkDrawable] the drawable on which to draw the linegcGdkGC] base graphics to usexylinePangoContext has a transformation matrix set, then
x and y specify the position of the left edge of the baseline
(left is in before-tranform user coordinates) in after-transform
device coordinates.