Custom modifiers

The predefined modifiers are not enough for your use case? No problem! You can easily write your own.

Implement your own image modifier by extending the AbstractModifier class and implementing the ModifierInterface method.

Classes/Image/CustomModifier.php

<?php

namespace Vendor\YourExt\Image\Modifier;

use Intervention\Image\Geometry\Factories\RectangleFactory;
use Intervention\Image\Interfaces\ImageInterface;
use KonradMichalik\Typo3EnvironmentIndicator\Image\Modifier\AbstractModifier;
use KonradMichalik\Typo3EnvironmentIndicator\Image\Modifier\ModifierInterface;

class CustomModifier extends AbstractModifier implements ModifierInterface {

    public function modify(ImageInterface &$image): void
    {
        // Modify the image using $this->configuration
    }

    public function validateConfigurationWithErrors(array $configuration): array
    {
        $errors = [];

        if (!isset($configuration['myRequiredKey'])) {
            $errors[] = 'Missing required configuration key: myRequiredKey';
        }

        return [
            'valid' => [] === $errors,
            'errors' => $errors,
        ];
    }
}