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34 lines
744 B
34 lines
744 B
var nodes = require('../nodes') |
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, hsla = require('./hsla') |
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, component = require('./component'); |
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/** |
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* Return the lightness component of the given `color`, |
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* or set the lightness component to the optional second `value` argument. |
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* |
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* Examples: |
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* |
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* lightness(#00c) |
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* // => 100% |
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* |
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* lightness(#00c, 80%) |
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* // => #99f |
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* |
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* @param {RGBA|HSLA} color |
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* @param {Unit} [value] |
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* @return {Unit|RGBA} |
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* @api public |
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*/ |
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module.exports = function lightness(color, value){ |
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if (value) { |
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var hslaColor = color.hsla; |
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return hsla( |
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new nodes.Unit(hslaColor.h), |
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new nodes.Unit(hslaColor.s), |
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value, |
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new nodes.Unit(hslaColor.a) |
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) |
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} |
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return component(color, new nodes.String('lightness')); |
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};
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