mirror of https://github.com/jkjoy/sunpeiwen.git
36 lines
678 B
JavaScript
36 lines
678 B
JavaScript
|
var nodes = require('../nodes')
|
||
|
, rgba = require('./rgba');
|
||
|
|
||
|
/**
|
||
|
* Return the blue component of the given `color`,
|
||
|
* or set the blue component to the optional second `value` argument.
|
||
|
*
|
||
|
* Examples:
|
||
|
*
|
||
|
* blue(#00c)
|
||
|
* // => 204
|
||
|
*
|
||
|
* blue(#000, 255)
|
||
|
* // => #00f
|
||
|
*
|
||
|
* @param {RGBA|HSLA} color
|
||
|
* @param {Unit} [value]
|
||
|
* @return {Unit|RGBA}
|
||
|
* @api public
|
||
|
*/
|
||
|
|
||
|
function blue(color, value){
|
||
|
color = color.rgba;
|
||
|
if (value) {
|
||
|
return rgba(
|
||
|
new nodes.Unit(color.r),
|
||
|
new nodes.Unit(color.g),
|
||
|
value,
|
||
|
new nodes.Unit(color.a)
|
||
|
);
|
||
|
}
|
||
|
return new nodes.Unit(color.b, '');
|
||
|
};
|
||
|
blue.params = ['color', 'value'];
|
||
|
module.exports = blue;
|