/home/preegmxb/byeaglytics-co.com/libraries/src/Image/ImageFilter.php
<?php
/**
* Joomla! Content Management System
*
* @copyright (C) 2017 Open Source Matters, Inc. <https://www.joomla.org>
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
namespace Joomla\CMS\Image;
\defined('JPATH_PLATFORM') or die;
/**
* Class to manipulate an image.
*
* @since 1.7.3
*/
abstract class ImageFilter
{
/**
* @var resource The image resource handle.
* @since 2.5.0
*/
protected $handle;
/**
* Class constructor.
*
* @param resource $handle The image resource on which to apply the filter.
*
* @since 1.7.3
* @throws \InvalidArgumentException
* @throws \RuntimeException
*/
public function __construct($handle)
{
// Verify that image filter support for PHP is available.
if (!\function_exists('imagefilter'))
{
throw new \RuntimeException('The imagefilter function for PHP is not available.');
}
/**
* Make sure the file handle is valid.
* TODO: Remove check for resource when we only support PHP 8
*/
if (!((\is_object($handle) && get_class($handle) == 'GdImage')
|| (\is_resource($handle) && get_resource_type($handle) == 'gd')))
{
throw new \InvalidArgumentException('The image handle is invalid for the image filter.');
}
$this->handle = $handle;
}
/**
* Method to apply a filter to an image resource.
*
* @param array $options An array of options for the filter.
*
* @return void
*
* @since 2.5.0
*/
abstract public function execute(array $options = []);
}