function CreateNew::validateArguments

Same name and namespace in other branches
  1. 9 core/modules/system/src/Plugin/ImageToolkit/Operation/gd/CreateNew.php \Drupal\system\Plugin\ImageToolkit\Operation\gd\CreateNew::validateArguments()
  2. 8.9.x core/modules/system/src/Plugin/ImageToolkit/Operation/gd/CreateNew.php \Drupal\system\Plugin\ImageToolkit\Operation\gd\CreateNew::validateArguments()
  3. 11.x core/modules/system/src/Plugin/ImageToolkit/Operation/gd/CreateNew.php \Drupal\system\Plugin\ImageToolkit\Operation\gd\CreateNew::validateArguments()

Validates the arguments.

Image toolkit operation implementers should place any argument validation in this method, throwing an InvalidArgumentException when an error is encountered.

Validation typically includes things like:

  • Checking that width and height are not negative.
  • Checking that a color value is indeed a color.

But validation may also include correcting the arguments, e.g:

  • Casting arguments to the correct type.
  • Rounding pixel values to an integer.

This base implementation just returns the array of arguments and thus does not need to be called by overriding methods.

Parameters

array $arguments: An associative array of arguments to be used by the toolkit operation.

Return value

array The validated and corrected arguments array.

Overrides ImageToolkitOperationBase::validateArguments

File

core/modules/system/src/Plugin/ImageToolkit/Operation/gd/CreateNew.php, line 53

Class

CreateNew
Defines GD2 create_new image operation.

Namespace

Drupal\system\Plugin\ImageToolkit\Operation\gd

Code

protected function validateArguments(array $arguments) {
    // Assure extension is supported.
    if (!in_array($arguments['extension'], $this->getToolkit()
        ->getSupportedExtensions())) {
        throw new \InvalidArgumentException("Invalid extension ('{$arguments['extension']}') specified for the image 'create_new' operation");
    }
    // Assure integers for width and height.
    $arguments['width'] = (int) round($arguments['width']);
    $arguments['height'] = (int) round($arguments['height']);
    // Fail when width or height are 0 or negative.
    if ($arguments['width'] <= 0) {
        throw new \InvalidArgumentException("Invalid width ('{$arguments['width']}') specified for the image 'create_new' operation");
    }
    if ($arguments['height'] <= 0) {
        throw new \InvalidArgumentException("Invalid height ({$arguments['height']}) specified for the image 'create_new' operation");
    }
    // Assure transparent color is a valid hex string.
    if ($arguments['transparent_color'] && !Color::validateHex($arguments['transparent_color'])) {
        throw new \InvalidArgumentException("Invalid transparent color ({$arguments['transparent_color']}) specified for the image 'create_new' operation");
    }
    return $arguments;
}

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