/**
* Apply the plugin to Css object
*
* @param Stylecow\Css $css The css object
* @param array $rootVariables Optional variables not defined in css code
*/
public static function apply(Css $css, array $rootVariables = array())
{
foreach ($css->getChildren(array(':root', 'html', 'body')) as $child) {
$rootVariables = self::getVariables($child, $rootVariables);
}
$css->executeRecursive(function ($code, &$contextVariables) {
$contextVariables = Variables::getVariables($code, $contextVariables);
foreach ($code->properties as $property) {
$property->value = Variables::replaceVariables($property->value, $contextVariables);
}
}, $rootVariables);
}
/**
* Apply the plugin to Css object
*
* @param Stylecow\Css $css The css object
* @param int $rem The default value for rem. This value can be overwritten for the font-face property in :root, html or body
*/
public static function apply(Css $css, $rem = 16)
{
foreach ($css->getChildren(array(':root', 'html', 'body')) as $child) {
foreach ($child->getProperties('font-size') as $property) {
$rem = Rem::rootPixels($property->value);
}
}
$css->executeRecursive(function ($code) use($rem) {
foreach ($code->getProperties() as $property) {
if (strpos($property->value, 'rem') === false) {
continue;
}
$value = preg_replace_callback('/([0-9\\.]+)rem/', function ($matches) use($rem) {
return Rem::toPixels($matches[1], $rem);
}, $property->value);
if ($property->value !== $value) {
$code->addProperty(new Property($property->name, $value), $property->getPositionInParent());
}
}
});
}
/**
* Search and return the css variables in an array. Removes also the css property
*
* @param array $properties The piece of the parsed css code with the properties
*
* @return array The transformed code
*/
public static function getGrid(Css $css)
{
$grid = array();
$gridChild = $css->getChildren('$grid');
if (isset($gridChild[0])) {
$gridChild[0]->removeFromParent();
foreach ($gridChild[0]->getProperties(array('width', 'columns', 'gutter')) as $property) {
$grid[$property->name] = $property->value;
}
}
return $grid;
}
