Take a look here https://stackoverflow.com/questions/43972344/magento-2-get-height-width-of-image. It's the same question and the second answer it's correct.
Sure, here is the code.
I edit the answer to paste the code.
use Magento\Framework\App\Helper\AbstractHelper;
/**
* Catalog image helper
* @SuppressWarnings(PHPMD.TooManyFields)
*/
class Image extends AbstractHelper
{
/**
* Media config node
*/
const MEDIA_TYPE_CONFIG_NODE = 'images';
/**
* Current model
*
* @var \Magento\Catalog\Model\Product\Image
*/
protected $_model;
/**
* Scheduled for resize image
*
* @var bool
*/
protected $_scheduleResize = true;
/**
* Scheduled for rotate image
*
* @var bool
*/
protected $_scheduleRotate = false;
/**
* Angle
*
* @var int
*/
protected $_angle;
/**
* Watermark file name
*
* @var string
*/
protected $_watermark;
/**
* Watermark Position
*
* @var string
*/
protected $_watermarkPosition;
/**
* Watermark Size
*
* @var string
*/
protected $_watermarkSize;
/**
* Watermark Image opacity
*
* @var int
*/
protected $_watermarkImageOpacity;
/**
* Current Product
*
* @var \Magento\Catalog\Model\Product
*/
protected $_product;
/**
* Image File
*
* @var string
*/
protected $_imageFile;
/**
* Image Placeholder
*
* @var string
*/
protected $_placeholder;
/**
* @var \Magento\Framework\View\Asset\Repository
*/
protected $_assetRepo;
/**
* Product image factory
*
* @var \Magento\Catalog\Model\Product\ImageFactory
*/
protected $_productImageFactory;
/**
* @var \Magento\Framework\View\ConfigInterface
*/
protected $viewConfig;
/**
* @var \Magento\Framework\Config\View
*/
protected $configView;
/**
* Image configuration attributes
*
* @var array
*/
protected $attributes = [];
protected $imageId;
/**
* @param \Magento\Framework\App\Helper\Context $context
* @param \Magento\Catalog\Model\Product\ImageFactory $productImageFactory
* @param \Magento\Framework\View\Asset\Repository $assetRepo
* @param \Magento\Framework\View\ConfigInterface $viewConfig
*/
public function __construct(
\Magento\Framework\App\Helper\Context $context,
\Magento\Catalog\Model\Product\ImageFactory $productImageFactory,
\Magento\Framework\View\Asset\Repository $assetRepo,
\Magento\Framework\View\ConfigInterface $viewConfig
) {
$this->_productImageFactory = $productImageFactory;
parent::__construct($context);
$this->_assetRepo = $assetRepo;
$this->viewConfig = $viewConfig;
$this->panelHelper = $panelHelper;
}
/**
* Reset all previous data
*
* @return $this
*/
protected function _reset()
{
$this->_model = null;
$this->_scheduleRotate = false;
$this->_angle = null;
$this->_watermark = null;
$this->_watermarkPosition = null;
$this->_watermarkSize = null;
$this->_watermarkImageOpacity = null;
$this->_product = null;
$this->_imageFile = null;
$this->attributes = [];
return $this;
}
/**
* Initialize Helper to work with Image
*
* @param \Magento\Catalog\Model\Product $product
* @param string $imageId
* @param array $attributes
* @return $this
*/
public function init($product, $imageId, $attributes = [])
{
$this->_reset();
$this->imageId = $imageId;
$this->attributes = array_merge(
$this->getConfigView()->getMediaAttributes('Magento_Catalog', self::MEDIA_TYPE_CONFIG_NODE, $imageId),
$attributes
);
$this->setProduct($product);
$this->setImageProperties();
$this->setWatermarkProperties();
return $this;
}
/**
* Retrieve image width
*
* @return string
*/
public function getWidth()
{
return $this->getAttribute('width');
}
/**
* Retrieve image height
*
* @return string
*/
public function getHeight()
{
return $this->getAttribute('height') ?: $this->getAttribute('width');
}
/**
* Retrieve image alt
*
* @return string
*/
public function getAlt()
{
return $this->getAttribute('alt') ?: $this->getAttribute('alt');
}
/**
* Retrieve image attribute
*
* @param string $name
* @return string
*/
protected function getAttribute($name)
{
return isset($this->attributes[$name]) ? $this->attributes[$name] : null;
}
}
