resolveStream($offset)); } /** * @param mixed $offset * * @return mixed */ public function offsetGet($offset) { return parent::offsetGet($offset) ?: $this->addMedium($offset); } /** * @param string $filename * @return string|null */ protected function resolveStream($filename) { /** @var UniformResourceLocator $locator */ $locator = Grav::instance()['locator']; return $locator->isStream($filename) ? ($locator->findResource($filename) ?: null) : null; } /** * @param string $stream * @return Medium|null */ protected function addMedium($stream) { $filename = $this->resolveStream($stream); if (!$filename) { return null; } $path = dirname($filename); list($basename, $ext,, $extra) = $this->getFileParts(basename($filename)); $medium = MediumFactory::fromFile($filename); if (empty($medium)) { return null; } $medium->set('size', filesize($filename)); $scale = (int) ($extra ?: 1); if ($scale !== 1) { $altMedium = $medium; // Create scaled down regular sized image. $medium = MediumFactory::scaledFromMedium($altMedium, $scale, 1)['file']; if (empty($medium)) { return null; } // Add original sized image as alternative. $medium->addAlternative($scale, $altMedium['file']); // Locate or generate smaller retina images. for ($i = $scale-1; $i > 1; $i--) { $altFilename = "{$path}/{$basename}@{$i}x.{$ext}"; if (file_exists($altFilename)) { $scaled = MediumFactory::fromFile($altFilename); } else { $scaled = MediumFactory::scaledFromMedium($altMedium, $scale, $i)['file']; } if ($scaled) { $medium->addAlternative($i, $scaled); } } } $meta = "{$path}/{$basename}.{$ext}.yaml"; if (file_exists($meta)) { $medium->addMetaFile($meta); } $meta = "{$path}/{$basename}.{$ext}.meta.yaml"; if (file_exists($meta)) { $medium->addMetaFile($meta); } $thumb = "{$path}/{$basename}.thumb.{$ext}"; if (file_exists($thumb)) { $medium->set('thumbnails.page', $thumb); } $this->add($stream, $medium); return $medium; } }