class Resize

Same name and namespace in other branches
  1. 11.x core/modules/system/src/Plugin/ImageToolkit/Operation/gd/Resize.php \Drupal\system\Plugin\ImageToolkit\Operation\gd\Resize

Defines GD2 resize operation.

Plugin annotation


@ImageToolkitOperation(
  id = "gd_resize",
  toolkit = "gd",
  operation = "resize",
  label = @Translation("Resize"),
  description = @Translation("Resizes an image to the given dimensions (ignoring aspect ratio).")
)

Hierarchy

Expanded class hierarchy of Resize

7 string references to 'Resize'
ImageEffectsTest::testResizeEffect in core/modules/image/tests/src/Kernel/ImageEffectsTest.php
Tests the 'image_resize' effect.
ImageTest::testFloatResize in core/tests/Drupal/Tests/Core/Image/ImageTest.php
Tests \Drupal\Core\Image\Image::resize().
ImageTest::testResize in core/tests/Drupal/Tests/Core/Image/ImageTest.php
Tests \Drupal\Core\Image\Image::resize().
ScaleAndCrop::execute in core/modules/system/src/Plugin/ImageToolkit/Operation/gd/ScaleAndCrop.php
ToolkitGdTest::providerTestImageFiles in core/tests/Drupal/KernelTests/Core/Image/ToolkitGdTest.php
Data provider for ::testManipulations().

... See full list

File

core/modules/system/src/Plugin/ImageToolkit/Operation/gd/Resize.php, line 16

Namespace

Drupal\system\Plugin\ImageToolkit\Operation\gd
View on git.drupalcode.org
View source 
class Resize extends GDImageToolkitOperationBase {
  
  /**
   * {@inheritdoc}
   */
  protected function arguments() {
    return [
      'width' => [
        'description' => 'The new width of the resized image, in pixels',
      ],
      'height' => [
        'description' => 'The new height of the resized image, in pixels',
      ],
    ];
  }
  
  /**
   * {@inheritdoc}
   */
  protected function validateArguments(array $arguments) {
    // Assure integers for all arguments.
    $arguments['width'] = (int) round($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 'resize' operation");
    }
    if ($arguments['height'] <= 0) {
      throw new \InvalidArgumentException("Invalid height ('{$arguments['height']}') specified for the image 'resize' operation");
    }
    return $arguments;
  }
  
  /**
   * {@inheritdoc}
   */
  protected function execute(array $arguments = []) {
    // Create a new resource of the required dimensions, and copy and resize
    // the original resource on it with resampling. Destroy the original
    // resource upon success.
    $original_resource = $this->getToolkit()
      ->getResource();
    $data = [
      'width' => $arguments['width'],
      'height' => $arguments['height'],
      'extension' => image_type_to_extension($this->getToolkit()
        ->getType(), FALSE),
      'transparent_color' => $this->getToolkit()
        ->getTransparentColor(),
      'is_temp' => TRUE,
    ];
    if ($this->getToolkit()
      ->apply('create_new', $data)) {
      if (imagecopyresampled($this->getToolkit()
        ->getResource(), $original_resource, 0, 0, 0, 0, $arguments['width'], $arguments['height'], imagesx($original_resource), imagesy($original_resource))) {
        imagedestroy($original_resource);
        return TRUE;
      }
      else {
        // In case of failure, destroy the temporary resource and restore
        // the original one.
        imagedestroy($this->getToolkit()
          ->getResource());
        $this->getToolkit()
          ->setResource($original_resource);
      }
    }
    return FALSE;
  }

}

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.