public function ScaleAndSmartCropImageEffect::buildConfigurationForm in Image Effects 8

Same name and namespace in other branches

1. 8.3 src/Plugin/ImageEffect/ScaleAndSmartCropImageEffect.php \Drupal\image_effects\Plugin\ImageEffect\ScaleAndSmartCropImageEffect::buildConfigurationForm()
2. 8.2 src/Plugin/ImageEffect/ScaleAndSmartCropImageEffect.php \Drupal\image_effects\Plugin\ImageEffect\ScaleAndSmartCropImageEffect::buildConfigurationForm()

Form constructor.

Plugin forms are embedded in other forms. In order to know where the plugin form is located in the parent form, #parents and #array_parents must be known, but these are not available during the initial build phase. In order to have these properties available when building the plugin form's elements, let this method return a form element that has a #process callback and build the rest of the form in the callback. By the time the callback is executed, the element's #parents and #array_parents properties will have been set by the form API. For more documentation on #parents and #array_parents, see \Drupal\Core\Render\Element\FormElement.

Parameters

array $form: An associative array containing the initial structure of the plugin form.

\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form. Calling code should pass on a subform state created through \Drupal\Core\Form\SubformState::createForSubform().

Return value

array The form structure.

Overrides PluginFormInterface::buildConfigurationForm

File

src/Plugin/ImageEffect/ScaleAndSmartCropImageEffect.php, line 47

Class

ScaleAndSmartCropImageEffect

Scale and crop an image preserving the portion with the most entropy.

Namespace

Drupal\image_effects\Plugin\ImageEffect

Code

public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
  $form['width'] = [
    '#type' => 'image_effects_px_perc',
    '#title' => $this
      ->t('Width'),
    '#default_value' => $this->configuration['width'],
    '#description' => $this
      ->t('Enter a value, and specify if pixels or percent. Leave blank to scale according to new height.'),
    '#size' => 5,
    '#maxlength' => 5,
    '#required' => FALSE,
  ];
  $form['height'] = [
    '#type' => 'image_effects_px_perc',
    '#title' => $this
      ->t('Height'),
    '#default_value' => $this->configuration['height'],
    '#description' => $this
      ->t('Enter a value, and specify if pixels or percent. Leave blank to scale according to new width.'),
    '#size' => 5,
    '#maxlength' => 5,
    '#required' => FALSE,
  ];
  $form['upscale'] = [
    '#type' => 'checkbox',
    '#default_value' => $this->configuration['upscale'],
    '#title' => t('Allow Upscaling'),
    '#description' => t('Let scale make images larger than their original size.'),
  ];
  $form['advanced'] = [
    '#type' => 'details',
    '#title' => $this
      ->t('Advanced settings'),
  ];
  $form['advanced']['algorithm'] = [
    '#type' => 'select',
    '#title' => $this
      ->t('Calculation algorithm'),
    '#options' => [
      'entropy_slice' => $this
        ->t('Image entropy - slicing'),
      'entropy_grid' => $this
        ->t('Image entropy - recursive grid'),
    ],
    '#description' => $this
      ->t('Select an algorithm to use to determine the crop area.'),
    '#default_value' => $this->configuration['algorithm'],
  ];
  $form['advanced']['simulate'] = [
    '#type' => 'checkbox',
    '#default_value' => $this->configuration['simulate'],
    '#title' => t('Simulate'),
    '#description' => t('If selected, the crop will not be executed; the crop area will be highlighted on the source image instead.'),
  ];
  return $form;
}