MagicImageService.php

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<?php
namespace TYPO3\CMS\Core\Resource\Service;

/*
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */

use TYPO3\CMS\Core\Resource;
use TYPO3\CMS\Core\Utility\MathUtility;

class MagicImageService
{
    protected $magicImageMaximumWidth = 300;

    protected $magicImageMaximumHeight = 1000;

    public function createMagicImage(Resource\File $imageFileObject, array $fileConfiguration)
    {
        // Process dimensions
        $maxWidth = MathUtility::forceIntegerInRange($fileConfiguration['width'], 0, $this->magicImageMaximumWidth);
        $maxHeight = MathUtility::forceIntegerInRange($fileConfiguration['height'], 0, $this->magicImageMaximumHeight);
        if (!$maxWidth) {
            $maxWidth = $this->magicImageMaximumWidth;
        }
        if (!$maxHeight) {
            $maxHeight = $this->magicImageMaximumHeight;
        }
        // Create the magic image
        $magicImage = $imageFileObject->process(
            Resource\ProcessedFile::CONTEXT_IMAGECROPSCALEMASK,
            [
                'width' => $maxWidth . 'm',
                'height' => $maxHeight . 'm'
            ]
        );
        return $magicImage;
    }

    public function setMagicImageMaximumDimensions(array $rteConfiguration)
    {
        // Get maximum dimensions from the configuration of the RTE image button
        $imageButtonConfiguration = (is_array($rteConfiguration['buttons.']) && is_array($rteConfiguration['buttons.']['image.'])) ? $rteConfiguration['buttons.']['image.'] : [];
        if (is_array($imageButtonConfiguration['options.']) && is_array($imageButtonConfiguration['options.']['magic.'])) {
            if ((int)$imageButtonConfiguration['options.']['magic.']['maxWidth'] > 0) {
                $this->magicImageMaximumWidth = (int)$imageButtonConfiguration['options.']['magic.']['maxWidth'];
            }
            if ((int)$imageButtonConfiguration['options.']['magic.']['maxHeight'] > 0) {
                $this->magicImageMaximumHeight = (int)$imageButtonConfiguration['options.']['magic.']['maxHeight'];
            }
        }
    }
}