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49 lines
1.6 KiB
49 lines
1.6 KiB
5 years ago
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class Color:
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def __init__(self, red, green, blue):
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if not (Color.check_color_value(red) or Color.check_color_value(green) or Color.check_color_value(blue)):
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print(f"Color is out of range")
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return
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self.red = red
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self.green = green
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self.blue = blue
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@classmethod
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def from_hex(cls, hexstring):
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"Initialize Color from hexstring (e.g. #ffffff)"
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if isinstance(hexstring, str):
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if hexstring[0] == '#':
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hexstring = hexstring[1:]
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if len(hexstring) == 6:
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color = tuple(int(hexstring[i:i+2], 16) for i in (0, 2, 4))
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return cls(color[0], color[1], color[2])
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@classmethod
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def from_name(cls, color_name):
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"Initialize Color from name (e.g. 'white')"
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color_name = str.lower(color_name)
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if color_name == 'white':
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return cls(255,255,255)
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elif color_name == 'black':
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return cls(0, 0, 0)
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elif color_name == 'red':
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return cls(255, 0, 0)
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elif color_name == 'green':
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return cls(0, 255, 0)
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elif color_name == 'blue':
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return cls(0, 0, 255)
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else:
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raise ValueError(f'Colorname {color_name} was not recognised')
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@staticmethod
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def check_color_value(value):
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if not isinstance(value, int):
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print(f"Colorvalue '{value}' is not a number")
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return False
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if value < 0 or value > 255:
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print(f"Color value '{value}' is out of bounds (0-255)")
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return False
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return True
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