class SmartCrop in Image Effects 8.2

Defines GD2 Smart Crop operation.

Plugin annotation

@ImageToolkitOperation(
  id = "image_effects_gd_smart_crop",
  toolkit = "gd",
  operation = "smart_crop",
  label = @Translation("Smart Crop"),
  description = @Translation("Similar to Crop, but preserves the portion of the image with the most entropy.")
)

Hierarchy

• class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface
  • class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait
    • class \Drupal\Core\ImageToolkit\ImageToolkitOperationBase implements ImageToolkitOperationInterface
      • class \Drupal\system\Plugin\ImageToolkit\Operation\gd\GDImageToolkitOperationBase
        • class \Drupal\image_effects\Plugin\ImageToolkit\Operation\gd\SmartCrop uses GDOperationTrait, SmartCropTrait

File

src/Plugin/ImageToolkit/Operation/gd/SmartCrop.php, line 19

Namespace

Drupal\image_effects\Plugin\ImageToolkit\Operation\gd

class SmartCrop extends GDImageToolkitOperationBase {
  use SmartCropTrait;
  use GDOperationTrait;

  /**
   * {@inheritdoc}
   */
  protected function execute(array $arguments) {
    switch ($arguments['algorithm']) {
      case 'entropy_slice':
        $rect = $this
          ->getEntropyCropBySlicing($this
          ->getToolkit()
          ->getResource(), $arguments['width'], $arguments['height']);
        break;
      case 'entropy_grid':
        $rect = $this
          ->getEntropyCropByGridding($this
          ->getToolkit()
          ->getResource(), $arguments['width'], $arguments['height'], $arguments['simulate'], $arguments['algorithm_params']['grid_width'], $arguments['algorithm_params']['grid_height'], $arguments['algorithm_params']['grid_rows'], $arguments['algorithm_params']['grid_cols'], $arguments['algorithm_params']['grid_sub_rows'], $arguments['algorithm_params']['grid_sub_cols']);
        break;
    }
    $points = $this
      ->getRectangleCorners($rect);

    // Crop the image using the coordinates found above. If simulating, draw
    // a marker on the image instead.
    if (!$arguments['simulate']) {
      return $this
        ->getToolkit()
        ->apply('crop', [
        'x' => $points[6],
        'y' => $points[7],
        'width' => $rect
          ->getWidth(),
        'height' => $rect
          ->getHeight(),
      ]);
    }
    else {
      $rect
        ->translate([
        -2,
        -2,
      ]);
      for ($i = -2; $i <= 2; $i++) {
        $this
          ->getToolkit()
          ->apply('draw_rectangle', [
          'rectangle' => $rect,
          'border_color' => $i !== 0 ? '#00FF00FF' : '#FF0000FF',
        ]);
        $rect
          ->translate([
          1,
          1,
        ]);
      }
      for ($i = 0; $i < 8; $i += 2) {
        $this
          ->getToolkit()
          ->apply('draw_ellipse', [
          'cx' => $points[$i],
          'cy' => $points[$i + 1],
          'width' => 6,
          'height' => 6,
          'color' => '#FF0000FF',
        ]);
      }
    }
    return TRUE;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DependencySerializationTrait::$_entityStorages	protected	property	An array of entity type IDs keyed by the property name of their storages.
DependencySerializationTrait::$_serviceIds	protected	property	An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep	public	function		1
DependencySerializationTrait::__wakeup	public	function		2
GDImageToolkitOperationBase::getToolkit	protected	function	The correctly typed image toolkit for GD operations. Overrides ImageToolkitOperationBase::getToolkit
GDOperationTrait::allocateColorFromRgba	protected	function	Allocates a GD color from an RGBA hexadecimal.
GDOperationTrait::filterOpacity	protected	function	Change overall image transparency level.
GDOperationTrait::getAreaEntropy	protected	function	Computes the entropy of the area of an image.
GDOperationTrait::getEntropyCropByGridding	protected	function	Computes the entropy crop of an image, using recursive gridding.
GDOperationTrait::getEntropyCropBySlicing	protected	function	Computes the entropy crop of an image, using slices.
GDOperationTrait::getRectangleCorners	protected	function	Convert a rectangle to a sequence of point coordinates.
GDOperationTrait::hexToRgba	protected	function	Convert a RGBA hex to its RGBA integer GD components.
GDOperationTrait::imageCopyGaussianBlurred	protected	function	Gets a copy of the source with the Gaussian Blur algorithm applied.
GDOperationTrait::imageCopyMergeAlpha	protected	function	Copy and merge part of an image, preserving alpha.
GDOperationTrait::imagettfbboxWrapper	protected	function	Wrapper of imagettfbbox().
GDOperationTrait::imagettftextWrapper	protected	function	Wrapper of imagettftext().
ImageToolkitOperationBase::$logger	protected	property	A logger instance.
ImageToolkitOperationBase::$toolkit	protected	property	The image toolkit.
ImageToolkitOperationBase::apply	final public	function	Applies a toolkit specific operation to an image. Overrides ImageToolkitOperationInterface::apply
ImageToolkitOperationBase::prepareArguments	protected	function	Checks if required arguments are passed in and adds defaults for non passed in optional arguments.
ImageToolkitOperationBase::__construct	public	function	Constructs an image toolkit operation plugin. Overrides PluginBase::__construct
MessengerTrait::$messenger	protected	property	The messenger.	29
MessengerTrait::messenger	public	function	Gets the messenger.	29
MessengerTrait::setMessenger	public	function	Sets the messenger.
PluginBase::$configuration	protected	property	Configuration information passed into the plugin.	1
PluginBase::$pluginDefinition	protected	property	The plugin implementation definition.	1
PluginBase::$pluginId	protected	property	The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR		constant	A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId	public	function	Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId	public	function	Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition	public	function	Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition	3
PluginBase::getPluginId	public	function	Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable	public	function	Determines if the plugin is configurable.
SmartCrop::execute	protected	function	Performs the actual manipulation on the image. Overrides ImageToolkitOperationBase::execute
SmartCropTrait::arguments	protected	function
SmartCropTrait::validateArguments	protected	function
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.	1
StringTranslationTrait::formatPlural	protected	function	Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals	protected	function	Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation	protected	function	Gets the string translation service.
StringTranslationTrait::setStringTranslation	public	function	Sets the string translation service to use.	2
StringTranslationTrait::t	protected	function	Translates a string to the current language or to a given language.