ManaPHP\Image\Adapter\Imagick::watermark PHP Метод

    public function watermark($file, $offsetX = 0, $offsetY = 0, $opacity = 1.0)
    {
        $watermark = new \Imagick($this->alias->resolve($file));
        if ($watermark->getImageAlphaChannel() === \Imagick::ALPHACHANNEL_UNDEFINED) {
            $watermark->setImageOpacity($opacity);
        }
        if ($watermark->getNumberImages() !== 1) {
            throw new ImagickException('not support multiple iterations: `:file`', ['file' => $file]);
        }
        if (!$this->_image->compositeImage($watermark, \Imagick::COMPOSITE_OVER, $offsetX, $offsetY)) {
            throw new ImagickException('Imagick::compositeImage Failed');
        }
        $watermark->clear();
        $watermark->destroy();
        return $this;
    }