/**
* Apply the plugin to Css object
*
* @param Stylecow\Css $css The css object
*/
public static function apply(Css $css)
{
$css->executeRecursive(function ($code) {
foreach ($code->getProperties() as $property) {
$property->executeFunction('color', function ($parameters) {
$rgba = Color::resolveColor(array_shift($parameters));
foreach ($parameters as $operation) {
if (strpos($operation, ':') === false) {
if (preg_match('/^[\\+\\-]?[0-9]+$/', $operation)) {
$function = 'tint';
$value = $operation;
} else {
if (preg_match('/^[\\+\\-]?[0-9\\.]+$/', $operation)) {
$function = 'alpha';
$value = $operation;
} else {
continue;
}
}
} else {
list($function, $value) = Parser::explodeTrim(':', $operation, 2);
}
switch ($function) {
case 'hue':
case 'saturation':
case 'light':
$rgba = Color::HSLA_RGBA(Color::editChannel(Color::RGBA_HSLA($rgba), $function, $value));
break;
case 'red':
case 'green':
case 'blue':
case 'alpha':
$rgba = Color::editChannel($rgba, $function, $value);
break;
case 'tint':
$rgba = Color::editTint($rgba, $value);
break;
}
}
if ($rgba[3] < 1) {
return 'rgba(' . implode(', ', $rgba) . ')';
}
return '#' . Color::RGBA_HEX($rgba);
});
}
});
}
