function image_effect_color_validate in Drupal 7

Element validate handler to ensure a hexadecimal color value.

1 string reference to 'image_effect_color_validate'

image_rotate_form in modules/image/image.admin.inc

Form structure for the image rotate form.

File

modules/image/image.admin.inc, line 496

Administration pages for image settings.

Code

function image_effect_color_validate($element, &$form_state) {
  if ($element['#value'] != '') {
    $hex_value = preg_replace('/^#/', '', $element['#value']);
    if (!preg_match('/^#[0-9A-F]{3}([0-9A-F]{3})?$/', $element['#value'])) {
      form_error($element, t('!name must be a hexadecimal color value.', array(
        '!name' => $element['#title'],
      )));
    }
  }
}