def test_alpha(self):
"""Test `alpha`."""
c = Color('color(--lchuv 90% 50 120 / 1)')
self.assertEqual(c.alpha, 1)
c.alpha = 0.5
self.assertEqual(c.alpha, 0.5)
def test_alpha(self):
"""Test `alpha`."""
c = Color('color(--ictcp 1 0.2 -0.3 / 1)')
self.assertEqual(c.alpha, 1)
c.alpha = 0.5
self.assertEqual(c.alpha, 0.5)
def test_alpha(self):
"""Test `alpha`."""
c = Color('color(xyz-d50 0.1 0.2 0.3 / 1)')
self.assertEqual(c.alpha, 1)
c.alpha = 0.5
self.assertEqual(c.alpha, 0.5)
def test_alpha(self):
"""Test `alpha`."""
c = Color('color(--okhsl 120 50% 90% / 1)')
self.assertEqual(c.alpha, 1)
c.alpha = 0.5
self.assertEqual(c.alpha, 0.5)
def test_alpha(self):
"""Test `alpha`."""
c = Color('color(prophoto-rgb 0.1 0.2 0.3 / 1)')
self.assertEqual(c.alpha, 1)
c.alpha = 0.5
self.assertEqual(c.alpha, 0.5)
def test_alpha(self):
"""Test `alpha`."""
c = Color('color(--jzczhz 0.22 0.5 270 / 1)')
self.assertEqual(c.alpha, 1)
c.alpha = 0.5
self.assertEqual(c.alpha, 0.5)
def evaluate_contrast(string):
"""Evaluate color."""
colors = []
try:
color = string.strip()
second = None
ratio = None
# Try to capture the color or the two colors to mix
first, ratio, more = parse_color_contrast(color)
if first and more is not None:
if more is False:
first = None
else:
second, ratio, more = parse_color_contrast(color, start=first.end, second=True)
if not second or more is False:
first = None
second = None
if first:
first = first.color
if second:
second = second.color
else:
if first:
first = first.color
second = Color("white" if first.luminance() < 0.5 else "black")
# Package up the color, or the two reference colors along with the mixed.
if first:
colors.append(first)
if second:
if second.alpha < 1.0:
second.alpha = 1.0
colors.append(second)
if ratio:
if first.alpha < 1.0:
first = first.overlay(second, space="srgb")
colormod = util.import_color("ColorHelper.custom.st_colormod.Color")
color = colormod(
"color({} min-contrast({} {}))".format(
first.to_string(**util.FULL_PREC),
second.to_string(**util.FULL_PREC),
ratio
)
)
first = Color(color)
colors[0] = first
if first.alpha < 1.0:
# Contrasted with current color
colors.append(first.overlay(second, space="srgb"))
# Contrasted with the two extremes min and max
colors.append(first.overlay("white", space="srgb"))
colors.append(first.overlay("black", space="srgb"))
else:
colors.append(first.clone())
except Exception:
colors = []
return colors