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snippet_normalize (cr, width, height)
pat = cairo.LinearGradient (0.0, 0.0, 0.0, 1.0)
pat.add_color_stop_rgba (1, 0, 0, 0, 1)
pat.add_color_stop_rgba (0, 1, 1, 1, 1)
cr.rectangle (0,0,1,1)
cr.set_source (pat)
cr.fill ()
pat = cairo.RadialGradient (0.45, 0.4, 0.1,
0.4, 0.4, 0.5)
pat.add_color_stop_rgba (0, 1, 1, 1, 1)
pat.add_color_stop_rgba (1, 0, 0, 0, 1)
cr.set_source (pat)
cr.arc (0.5, 0.5, 0.3, 0, 2 * M_PI)
cr.fill ()
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