public static function parse($str)
{
if ($test = Color::test($str)) {
$color = $test['value'];
$type = $test['type'];
} else {
return false;
}
$rgba = false;
switch ($type) {
case 'hex':
$rgba = Color::hexToRgb($color);
break;
case 'rgb':
case 'rgba':
case 'hsl':
case 'hsla':
$function = $type;
$vals = substr($color, strlen($function) + 1);
// Trim function name and start paren.
$vals = substr($vals, 0, strlen($vals) - 1);
// Trim end paren.
$vals = array_map('trim', explode(',', $vals));
// Explode to array of arguments.
// Always set the alpha channel.
$vals[3] = isset($vals[3]) ? floatval($vals[3]) : 1;
if (strpos($function, 'rgb') === 0) {
$rgba = Color::normalizeCssRgb($vals);
} else {
$rgba = Color::cssHslToRgb($vals);
}
break;
case 'keyword':
$keywords = self::getKeywords();
$rgba = $keywords[$color];
break;
}
return $rgba;
}
protected function minifyColors()
{
static $keywords_patt, $functions_patt;
$minified_keywords = Color::getMinifyableKeywords();
if (!$keywords_patt) {
$keywords_patt = '~(?<![\\w-\\.#])(' . implode('|', array_keys($minified_keywords)) . ')(?![\\w-\\.#\\]])~iS';
$functions_patt = Regex::make('~{{ LB }}(rgb|hsl)\\(([^\\)]{5,})\\)~iS');
}
$this->string->pregReplaceCallback($keywords_patt, function ($m) use($minified_keywords) {
return $minified_keywords[strtolower($m[0])];
});
$this->string->pregReplaceCallback($functions_patt, function ($m) {
$args = Functions::parseArgs(trim($m[2]));
if (stripos($m[1], 'hsl') === 0) {
$args = Color::cssHslToRgb($args);
}
return Color::rgbToHex($args);
});
}
