public static function Color::hexToRgb in Service Container 7

Same name and namespace in other branches

1. 7.2 lib/Drupal/Component/Utility/Color.php \Drupal\Component\Utility\Color::hexToRgb()

Parses a hexadecimal color string like '#abc' or '#aabbcc'.

Parameters

string $hex: The hexadecimal color string to parse.

Return value

array An array containing the values for 'red', 'green', 'blue'.

Throws

\InvalidArgumentException

File

lib/Drupal/Component/Utility/Color.php, line 49

Contains \Drupal\Component\Utility\Color.

Class

Color

Performs color conversions.

Namespace

Drupal\Component\Utility

Code

public static function hexToRgb($hex) {
  if (!self::validateHex($hex)) {
    throw new \InvalidArgumentException("'{$hex}' is not a valid hex value.");
  }

  // Ignore '#' prefixes.
  $hex = ltrim($hex, '#');

  // Convert shorthands like '#abc' to '#aabbcc'.
  if (strlen($hex) == 3) {
    $hex = $hex[0] . $hex[0] . $hex[1] . $hex[1] . $hex[2] . $hex[2];
  }
  $c = hexdec($hex);
  return array(
    'red' => $c >> 16 & 0xff,
    'green' => $c >> 8 & 0xff,
    'blue' => $c & 0xff,
  );
}