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48 lines
1.6 KiB
48 lines
1.6 KiB
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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