public function ConvolutionSharpenImageEffect::applyEffect in Image Effects 8.2

Same name and namespace in other branches

1. 8.3 src/Plugin/ImageEffect/ConvolutionSharpenImageEffect.php \Drupal\image_effects\Plugin\ImageEffect\ConvolutionSharpenImageEffect::applyEffect()
2. 8 src/Plugin/ImageEffect/ConvolutionSharpenImageEffect.php \Drupal\image_effects\Plugin\ImageEffect\ConvolutionSharpenImageEffect::applyEffect()

Applies an image effect to the image object.

Parameters

\Drupal\Core\Image\ImageInterface $image: An image file object.

Return value

bool TRUE on success. FALSE if unable to perform the image effect on the image.

Overrides ImageEffectInterface::applyEffect

File

src/Plugin/ImageEffect/ConvolutionSharpenImageEffect.php, line 67

Class

ConvolutionSharpenImageEffect

Sharpen image using convolution.

Namespace

Drupal\image_effects\Plugin\ImageEffect

Code

public function applyEffect(ImageInterface $image) {
  $sharpenlevel = $this->configuration['level'] / 100;
  $kernel = [
    [
      -$sharpenlevel,
      -$sharpenlevel,
      -$sharpenlevel,
    ],
    [
      -$sharpenlevel,
      8 * $sharpenlevel + 1,
      -$sharpenlevel,
    ],
    [
      -$sharpenlevel,
      -$sharpenlevel,
      -$sharpenlevel,
    ],
  ];
  return $image
    ->apply('convolution', [
    'kernel' => $kernel,
    'divisor' => 1,
    'offset' => 0,
  ]);
}