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<?php |
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namespace Conlect\ImageIIIF; |
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use Intervention\Image\ImageManager; |
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use Noodlehaus\Config; |
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class ImageIIIF |
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{ |
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public $manager; |
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protected $config; |
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public $image; |
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public function __construct(ImageManager $manager, Config $config = null) |
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{ |
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$this->manager = $manager; |
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$this->config = $config; |
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} |
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public function load($file) |
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{ |
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$this->image = $this->manager->make($file); |
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return $this; |
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} |
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public function withParameters(array $parameters) |
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{ |
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$this->applyParameters($parameters); |
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return $this; |
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} |
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public function stream() |
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{ |
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return $this->image->stream(); |
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} |
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protected function applyParameters(array $parameters) |
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{ |
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$iiifParameters = [ |
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'region' => \Conlect\ImageIIIF\Parameters\Region::class, |
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'size' => \Conlect\ImageIIIF\Parameters\Size::class, |
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'rotation' => \Conlect\ImageIIIF\Parameters\Rotation::class, |
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'quality' => \Conlect\ImageIIIF\Parameters\Quality::class, |
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'format' => \Conlect\ImageIIIF\Parameters\Format::class, |
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]; |
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foreach ($parameters as $parameter => $options) { |
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if (! in_array($parameter, array_keys($iiifParameters))) { |
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continue; |
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} |
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$this->image = (new $iiifParameters[$parameter]($this->image))->apply($options); |
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} |
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} |
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public function hasValidParameters(array $parameters) |
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{ |
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$validators = [ |
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'region' => \Conlect\ImageIIIF\Validators\RegionValidator::class, |
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'size' => \Conlect\ImageIIIF\Validators\SizeValidator::class, |
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'rotation' => \Conlect\ImageIIIF\Validators\RotationValidator::class, |
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'quality' => \Conlect\ImageIIIF\Validators\QualityValidator::class, |
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'format' => \Conlect\ImageIIIF\Validators\FormatValidator::class, |
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]; |
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foreach ($parameters as $parameter => $value) { |
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if (! in_array($parameter, array_keys($validators))) { |
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continue; |
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} |
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if (! (new $validators[$parameter]($this->config, $this->image))->valid($value)) { |
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return false; |
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} |
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} |
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return true; |
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} |
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public function info($prefix = 'iiif', $identifier) |
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{ |
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// Optional - maxWidth, maxHeight, maxArea |
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// sizes - prefered w,h pairs |
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// rights - CC license |
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return [ |
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'@context' => 'http://iiif.io/api/image/3/context.json', |
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'id' => $this->config['base_url'] . '/' . $prefix . '/' . $identifier, |
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'type' => 'ImageService3', |
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'protocol' => 'http://iiif.io/api/image', |
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'profile' => 'level2', |
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'height' => $this->image->height(), |
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'width' => $this->image->width(), |
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'tiles' => [ |
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[ |
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'width' => $this->config['tile_width'], |
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'scaleFactors' => $this->getScaleFactors(), |
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], |
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], |
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'extraFormats' => $this->getExtraFormats(), |
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'extraQualities' => $this->config['qualities'], |
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'extraFeatures' => $this->config['supports'], |
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]; |
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} |
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protected function getScaleFactors() |
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{ |
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$scaleFactors = []; |
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$maxSize = max($this->image->width(), $this->image->height()); |
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$total = (int) ceil($maxSize / $this->config['tile_width']); |
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$factor = 1; |
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while ($factor / 2 <= $total) { |
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$scaleFactors[] = $factor; |
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$factor = $factor * 2; |
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} |
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if (count($scaleFactors) <= 1) { |
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return; |
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} |
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return $scaleFactors; |
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} |
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protected function getExtraFormats() |
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{ |
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if (is_array($this->config['mime'])) { |
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return array_keys($this->config['mime']); |
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} |
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return []; |
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} |
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} |
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conlect /
image-iiif
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