Specifies how to render the endpoints of the path when stroking.
The default line cap style is cairo.types.LineCap.Butt.
start(stop) the line exactly at the start(end) point (Since 1.0)
use a round ending, the center of the circle is the end point (Since 1.0)
use squared ending, the center of the square is the end point (Since 1.0)
Specifies how to render the endpoints of the path when stroking.
The default line cap style is cairo.types.LineCap.Butt.