Determines the MIME type of an image.

Parameters

string $image_style_name: The image style that will be applied to the image.

string $extension: The original extension of the image (without the leading dot).

Return value

string|null The MIME type of the image after the image style is applied, or NULL if not found.

1 call to ResponsiveImageBuilder::getMimeType()

ResponsiveImageBuilder::buildSourceAttributes in core/modules/responsive_image/src/ResponsiveImageBuilder.php

Helper function for template_preprocess_responsive_image().

File

core/modules/responsive_image/src/ResponsiveImageBuilder.php, line 302

Class

ResponsiveImageBuilder

Provides methods related to building responsive image source attributes.

Namespace

Drupal\responsive_image

Code

public function getMimeType(string $image_style_name, string $extension) : ?string {
  $extension = match ($image_style_name) {  ResponsiveImageStyleInterface::EMPTY_IMAGE => 'gif',
    ResponsiveImageStyleInterface::ORIGINAL_IMAGE => $extension,
    default => $this->entityTypeManager
      ->getStorage('image_style')
      ->load($image_style_name)
      ->getDerivativeExtension($extension),
  
  };
  return $this->mimeTypeMap
    ->getMimeTypeForExtension($extension);
}

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