def test_hsla_alpha():
color = HSLA(0, 100, 0, 0.5)
alpha = Unit(66, "%")
assert hsla(color, alpha) == HSLA(0, 100, 0, 0.66)
color = HSLA(0, 100, 0, 0.5)
alpha = Unit(0.3)
assert hsla(color, alpha) == HSLA(0, 100, 0, 0.3)
def test_hsla_components_clamping():
hue = Unit(120)
saturation = Unit(140)
lightness = Unit(160)
alpha = Unit(190, "%")
assert hsla(hue, saturation, lightness, alpha) == HSLA(120, 100, 100, 1.0)
hue = Unit(380)
saturation = Unit(140)
lightness = Unit(160)
alpha = Unit(190, "%")
assert hsla(hue, saturation, lightness, alpha) == HSLA(20, 100, 100, 1.0)
def test_hsla_components():
hue = Unit(20)
saturation = Unit(40)
lightness = Unit(60)
alpha = Unit(0.8)
assert hsla(hue, saturation, lightness, alpha) == HSLA(20, 40, 60, 0.8)
alpha = Unit(90, "%")
assert hsla(hue, saturation, lightness, alpha) == HSLA(20, 40, 60, 0.9)
hue = Unit(20, "deg")
saturation = Unit(40, "%")
lightness = Unit(60, "%")
alpha = Unit(80, "%")
assert hsla(hue, saturation, lightness, alpha) == HSLA(20, 40, 60, 0.8)
def lightness(color: Color, value=None, evaluator=None):
if value:
hsla_color = color.hsla()
return hsla(
Unit(hsla_color.hue),
Unit(hsla_color.saturation),
value,
Unit(hsla_color.a),
evaluator,
)
return component(color, String("lightness"), evaluator)
def hue(color: Color, value=None, evaluator=None):
if value:
hsla_color = color.hsla()
return hsla(
value,
Unit(hsla_color.saturation),
Unit(hsla_color.lightness),
Unit(hsla_color.a),
evaluator,
)
return component(color, String("hue"))
def test_hsla_color():
color = HSLA(0, 50, 0, 0.5)
assert hsla(color) == HSLA(0, 50, 0, 0.5)
def test_hsla_components_weird():
hue = Unit(20, "mm")
saturation = Unit(40, "mm")
lightness = Unit(60, "in")
alpha = Unit(0.8, "kHz")
assert hsla(hue, saturation, lightness, alpha) == HSLA(20, 40, 60, 0.8)
def hsl(hue, saturation=None, lightness=None, evaluator=None):
if hue and (saturation is lightness is None):
assert_color(hue, "color")
return hue.hsla()
return hsla(hue, saturation, lightness, Unit(1), evaluator)