Renders an arrow pointing to angle.
Typical arrow rendering at 0, 1⁄2 π;, π; and 3⁄2 π:
a gtk.style_context.StyleContext
a cairo.context.Context
arrow angle from 0 to 2 * G_PI, being 0 the arrow pointing to the north
X origin of the render area
Y origin of the render area
square side for render area
Renders an arrow pointing to angle.
Typical arrow rendering at 0, 1⁄2 π;, π; and 3⁄2 π: