mirror of https://github.com/jkjoy/sunpeiwen.git
36 lines
670 B
JavaScript
36 lines
670 B
JavaScript
var nodes = require('../nodes')
|
|
, rgba = require('./rgba');
|
|
|
|
/**
|
|
* Return the red component of the given `color`,
|
|
* or set the red component to the optional second `value` argument.
|
|
*
|
|
* Examples:
|
|
*
|
|
* red(#c00)
|
|
* // => 204
|
|
*
|
|
* red(#000, 255)
|
|
* // => #f00
|
|
*
|
|
* @param {RGBA|HSLA} color
|
|
* @param {Unit} [value]
|
|
* @return {Unit|RGBA}
|
|
* @api public
|
|
*/
|
|
|
|
function red(color, value){
|
|
color = color.rgba;
|
|
if (value) {
|
|
return rgba(
|
|
value,
|
|
new nodes.Unit(color.g),
|
|
new nodes.Unit(color.b),
|
|
new nodes.Unit(color.a)
|
|
);
|
|
}
|
|
return new nodes.Unit(color.r, '');
|
|
}
|
|
red.params = ['color', 'value'];
|
|
module.exports = red;
|