function image_effect_integer_validate

image_effect_integer_validate($element, &$form_state)

Element validate handler to ensure an integer pixel value.

The property #allow_negative = TRUE may be set to allow negative integers.

File

modules/image/image.admin.inc, line 481

Administration pages for image settings.

Code

function image_effect_integer_validate($element, &$form_state) {
  $value = empty($element['#allow_negative']) ? $element['#value'] : preg_replace('/^-/', '', $element['#value']);
  if ($element['#value'] != '' && (!is_numeric($value) || intval($value) <= 0)) {
    if (empty($element['#allow_negative'])) {
      form_error($element, t('!name must be an integer.', array('!name' => $element['#title'])));
    }
    else {
      form_error($element, t('!name must be a positive integer.', array('!name' => $element['#title'])));
    }
  }
}