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<?php |
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/* |
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* This file is part of the `liip/LiipImagineBundle` project. |
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* |
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* (c) https://github.com/liip/LiipImagineBundle/graphs/contributors |
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* |
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* For the full copyright and license information, please view the LICENSE.md |
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* file that was distributed with this source code. |
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*/ |
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namespace Liip\ImagineBundle\Imagine\Filter\Loader; |
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use Imagine\Image\ImageInterface; |
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use Imagine\Image\ImagineInterface; |
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use Liip\ImagineBundle\Exception\Imagine\Filter\LoadFilterException; |
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use Liip\ImagineBundle\Exception\InvalidArgumentException; |
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use Symfony\Component\OptionsResolver\Exception\ExceptionInterface; |
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use Symfony\Component\OptionsResolver\Options; |
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use Symfony\Component\OptionsResolver\OptionsResolver; |
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class ResampleFilterLoader implements LoaderInterface |
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{ |
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/** |
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* @var ImagineInterface |
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*/ |
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private $imagine; |
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public function __construct(ImagineInterface $imagine) |
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{ |
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$this->imagine = $imagine; |
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} |
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/** |
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* @throws LoadFilterException |
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* |
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* @return ImageInterface |
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*/ |
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public function load(ImageInterface $image, array $options = []) |
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{ |
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$options = $this->resolveOptions($options); |
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$tmpFile = $this->getTemporaryFile($options['temp_dir']); |
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try { |
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$image->save($tmpFile, $this->getImagineSaveOptions($options)); |
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$image = $this->imagine->open($tmpFile); |
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$this->delTemporaryFile($tmpFile); |
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} catch (\Exception $exception) { |
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$this->delTemporaryFile($tmpFile); |
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throw new LoadFilterException('Unable to save/open file in resample filter loader.', null, $exception); |
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} |
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return $image; |
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} |
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/** |
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* @param string $path |
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* |
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* @throws \RuntimeException |
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* |
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* @return string |
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*/ |
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private function getTemporaryFile($path) |
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{ |
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if (!is_dir($path) || false === $file = tempnam($path, 'liip-imagine-bundle')) { |
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throw new \RuntimeException(sprintf('Unable to create temporary file in "%s" base path.', $path)); |
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} |
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return $file; |
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} |
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/** |
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* @param $file |
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* |
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* @throws \RuntimeException |
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*/ |
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private function delTemporaryFile($file) |
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{ |
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if (file_exists($file)) { |
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unlink($file); |
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} |
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} |
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/** |
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* @return array |
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*/ |
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private function getImagineSaveOptions(array $options) |
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{ |
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$saveOptions = [ |
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'resolution-units' => $options['unit'], |
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'resolution-x' => $options['x'], |
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'resolution-y' => $options['y'], |
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]; |
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if (isset($options['filter'])) { |
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$saveOptions['resampling-filter'] = $options['filter']; |
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} |
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return $saveOptions; |
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} |
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/** |
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* @return array |
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*/ |
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private function resolveOptions(array $options) |
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{ |
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$resolver = new OptionsResolver(); |
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$resolver->setRequired(['x', 'y', 'unit', 'temp_dir']); |
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$resolver->setDefined(['filter']); |
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$resolver->setDefault('temp_dir', sys_get_temp_dir()); |
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$resolver->setDefault('filter', 'UNDEFINED'); |
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$resolver->setAllowedTypes('x', ['int', 'float']); |
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$resolver->setAllowedTypes('y', ['int', 'float']); |
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$resolver->setAllowedTypes('temp_dir', ['string']); |
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$resolver->setAllowedTypes('filter', ['string']); |
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$resolver->setAllowedValues('unit', [ |
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ImageInterface::RESOLUTION_PIXELSPERINCH, |
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ImageInterface::RESOLUTION_PIXELSPERCENTIMETER, |
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]); |
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$resolver->setNormalizer('filter', function (Options $options, $value) { |
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foreach (['\Imagine\Image\ImageInterface::FILTER_%s', '\Imagine\Image\ImageInterface::%s', '%s'] as $format) { |
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if (\defined($constant = sprintf($format, mb_strtoupper($value))) || \defined($constant = sprintf($format, $value))) { |
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return \constant($constant); |
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} |
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} |
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throw new InvalidArgumentException('Invalid value for "filter" option: must be a valid constant resolvable using one of formats '.'"\Imagine\Image\ImageInterface::FILTER_%s", "\Imagine\Image\ImageInterface::%s", or "%s".'); |
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}); |
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try { |
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return $resolver->resolve($options); |
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} catch (ExceptionInterface $exception) { |
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throw new InvalidArgumentException(sprintf('Invalid option(s) passed to %s::load().', __CLASS__), null, $exception); |
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} |
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} |
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} |
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liip /
LiipImagineBundle
