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<?php |
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namespace floor12\files\logic; |
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use floor12\files\components\SimpleImage; |
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use floor12\files\models\File; |
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use Yii; |
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use yii\base\ErrorException; |
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class ImagePreviewer |
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{ |
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protected $model; |
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protected $width; |
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protected $webp; |
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protected $fileName; |
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protected $fileNameWebp; |
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/** |
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* ImagePreviewer constructor. |
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* @param File $model |
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* @param int $width |
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* @param bool $webp |
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* @throws ErrorException |
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*/ |
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public function __construct(File $model, int $width, $webp = false) |
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{ |
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$this->model = $model; |
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$this->width = $width; |
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$this->webp = $webp; |
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if (!$this->model->isImage() && !$this->model->isVideo()) |
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throw new ErrorException('File is not an image or video.'); |
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} |
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/** |
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* @return string |
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* @throws \ErrorException |
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* @throws \yii\base\InvalidConfigException |
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*/ |
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public function getUrl() |
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{ |
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if ($this->model->isSvg()) |
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return $this->model->getRootPath(); |
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$cachePath = Yii::$app->getModule('files')->cacheFullPath; |
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$jpegName = $this->model->makeNameWithSize($this->model->filename, $this->width); |
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$webpName = $this->model->makeNameWithSize($this->model->filename, $this->width, true); |
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$this->fileName = $cachePath . DIRECTORY_SEPARATOR . $jpegName; |
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$this->fileNameWebp = $cachePath . DIRECTORY_SEPARATOR . $webpName; |
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$this->prepareFolder(); |
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$sourceImagePath = $this->model->rootPath; |
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if ($this->model->isVideo()) { |
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$sourceImagePath = $this->fileName . '.jpeg'; |
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if (!is_file($sourceImagePath)) |
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Yii::createObject(VideoFrameExtractor::class, [ |
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$this->model->rootPath, |
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$sourceImagePath |
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])->extract(); |
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} |
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if (!is_file($this->fileName) || filesize($this->fileName) == 0) |
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$this->createPreview($sourceImagePath, $this->model->getWatermark()); |
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if ($this->webp && !file_exists($this->fileNameWebp)) |
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$this->createPreviewWebp(); |
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if ($this->webp) |
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return $this->fileNameWebp; |
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return $this->fileName; |
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} |
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/** |
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* Generate all folders for storing image thumbnails cache. |
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*/ |
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protected function prepareFolder() |
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{ |
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if (!file_exists(Yii::$app->getModule('files')->cacheFullPath)) |
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mkdir(Yii::$app->getModule('files')->cacheFullPath); |
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$lastFolder = '/'; |
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$explodes = explode('/', $this->fileName); |
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array_pop($explodes); |
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if (empty($explodes)) |
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return; |
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foreach ($explodes as $folder) { |
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if (empty($folder)) |
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continue; |
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$lastFolder = $lastFolder . $folder . '/'; |
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if (!file_exists($lastFolder)) |
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mkdir($lastFolder); |
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} |
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} |
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/** |
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* Creat JPG preview |
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* @param $sourceImagePath |
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* @throws ErrorException |
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*/ |
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protected function createPreview($sourceImagePath, $watermarkInPng = null) |
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{ |
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$img = new SimpleImage(); |
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$img->load($sourceImagePath); |
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if ($watermarkInPng) |
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$img->watermark($watermarkInPng); |
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$imgWidth = $img->getWidth(); |
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$imgHeight = $img->getHeight(); |
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if ($this->width && $this->width < $imgWidth) { |
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$ratio = $this->width / $imgWidth; |
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$img->resizeToWidth($this->width); |
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} |
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$saveType = $img->image_type; |
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if ($saveType == IMG_WEBP || $saveType == IMG_QUADRATIC) { |
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$saveType = IMG_JPEG; |
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} |
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$img->save($this->fileName, $saveType); |
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} |
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/** |
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* Create webp from default preview |
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*/ |
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protected function createPreviewWebp() |
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{ |
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$img = new SimpleImage(); |
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$img->load($this->fileName); |
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$img->save($this->fileNameWebp, IMAGETYPE_WEBP, 70); |
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} |
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} |
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floor12 /
yii2-module-files
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