function FileImageDimensionsConstraintValidator::validate

File

core/modules/file/src/Plugin/Validation/Constraint/FileImageDimensionsConstraintValidator.php, line 48

Class

FileImageDimensionsConstraintValidator

Validator for the FileImageDimensionsConstraint.

Namespace

Code

public function validate(mixed $value, Constraint $constraint) {
  $file = $this->assertValueIsFile($value);
  if (!$constraint instanceof FileImageDimensionsConstraint) {
    throw new UnexpectedTypeException($constraint, FileImageDimensionsConstraint::class);
  }
  $image = $this->imageFactory
    ->get($file->getFileUri());
  if (!$image->isValid()) {
    return;
  }
  $scaling = FALSE;
  $maxDimensions = $constraint->maxDimensions;
  if ($maxDimensions) {
    // Check that it is smaller than the given dimensions.
    [
      $width,
      $height,
    ] = explode('x', $maxDimensions);
    if ($image->getWidth() > $width || $image->getHeight() > $height) {
      // Try to resize the image to fit the dimensions.
      if ($image->scale($width, $height)) {
        $scaling = TRUE;
        $image->save();
        if (!empty($width) && !empty($height)) {
          $this->messenger
            ->addStatus($this->t('The image was resized to fit within the maximum allowed dimensions of %dimensions pixels. The new dimensions of the resized image are %new_widthx%new_height pixels.', [
            '%dimensions' => $maxDimensions,
            '%new_width' => $image->getWidth(),
            '%new_height' => $image->getHeight(),
          ]));
        }
        elseif (empty($width)) {
          $this->messenger
            ->addStatus($this->t('The image was resized to fit within the maximum allowed height of %height pixels. The new dimensions of the resized image are %new_widthx%new_height pixels.', [
            '%height' => $height,
            '%new_width' => $image->getWidth(),
            '%new_height' => $image->getHeight(),
          ]));
        }
        elseif (empty($height)) {
          $this->messenger
            ->addStatus($this->t('The image was resized to fit within the maximum allowed width of %width pixels. The new dimensions of the resized image are %new_widthx%new_height pixels.', [
            '%width' => $width,
            '%new_width' => $image->getWidth(),
            '%new_height' => $image->getHeight(),
          ]));
        }
      }
      else {
        $this->context
          ->addViolation($constraint->messageResizeFailed);
      }
    }
  }
  $minDimensions = $constraint->minDimensions;
  if ($minDimensions) {
    // Check that it is larger than the given dimensions.
    [
      $width,
      $height,
    ] = explode('x', $minDimensions);
    if ($image->getWidth() < $width || $image->getHeight() < $height) {
      if ($scaling) {
        $this->context
          ->addViolation($constraint->messageResizedImageTooSmall, [
          '%dimensions' => $minDimensions,
          '%width' => $image->getWidth(),
          '%height' => $image->getHeight(),
        ]);
        return;
      }
      $this->context
        ->addViolation($constraint->messageImageTooSmall, [
        '%dimensions' => $minDimensions,
        '%width' => $image->getWidth(),
        '%height' => $image->getHeight(),
      ]);
    }
  }
}