24 lines
519 B
Python
24 lines
519 B
Python
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#
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"""
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kivy color:
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[ r, g, b, a]
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不同的颜色值总能找到一个人眼感知的灰度值，这是著名的心理学公式：
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灰度 = 红×0.299 + 绿×0.587 + 蓝×0.114
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"""
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当灰度值大于0.5时使用暗色，否则使用明色
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“”“
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def get_fgcolor_from_bgcolor(bgcolor):
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dark_fgcolor=[0.11,0.11,0.11,1]
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bright_fgcolor=[0.89,0.89,0.89,1]
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graylevel = 0.299 * bgcolor[0] + \
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0.587 * bgcolor[1] + \
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0.114 * bgcolor[2]
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if graylevel > 0.5:
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return dark_fgcolor
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else:
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return bright_fgcolor
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