/**
* @see \wcf\system\image\adapter\IImageAdapter::overlayImage()
*/
public function overlayImage($file, $x, $y, $opacity)
{
// validate file
if (!file_exists($file)) {
throw new SystemException("Image '" . $file . "' does not exist.");
}
// validate opacity
if ($opacity < 0 || $opacity > 1) {
throw new SystemException("Invalid opacity value given.");
}
$this->adapter->overlayImage($file, $x, $y, $opacity);
}
/**
* @see wcf\system\image\adapter\IImageAdapter::getHeight()
*/
public function getHeight()
{
return $this->adapter->getHeight();
}
