/**
* Create the 2x image.
*
* @param \Craft\AssetFileModel $image
* @param \Craft\AssetTransformModel $transform
* @return string $markup
*/
protected function create2xImage(AssetFileModel $image, AssetTransformModel $transform)
{
// Grab sizes as int.
$originalWidth = (int) $image->getWidth(false);
$transformWidth = (int) $transform->width;
$transformHeight = (int) $transform->height;
// Set transform params, uses params set in Craft.
$params = ['mode' => $transform->mode, 'width' => $transformWidth * 2, 'height' => $transformHeight * 2, 'quality' => $transform->quality, 'position' => $transform->position];
// Markup for the specified transform.
$markup = $image->getUrl($transform->handle);
// If original width is bigger than the 2x size for the specified transform, add the srcset.
if ($originalWidth >= $transformWidth * 2) {
$markup .= '" srcset="' . $image->getUrl($params) . ' 2x';
}
return $markup;
}