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<?php |
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namespace Divergence\Models\Media; |
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use Exception; |
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class PDF extends Media |
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{ |
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// configurables |
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public static $extractPageCommand = 'convert \'%1$s[%2$u]\' JPEG:- 2>/dev/null'; // 1=pdf path, 2=page |
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public static $extractPageIndex = 0; |
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// magic methods |
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public static function __classLoaded() |
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{ |
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$className = get_called_class(); |
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Media::$mimeHandlers['application/pdf'] = $className; |
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Media::$mimeHandlers['application/postscript'] = $className; |
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Media::$mimeHandlers['image/svg+xml'] = $className; |
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parent::__classLoaded(); |
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} |
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public function getValue($name) |
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{ |
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switch ($name) { |
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case 'ThumbnailMIMEType': |
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return 'image/png'; |
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case 'Extension': |
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switch ($this->MIMEType) { |
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case 'application/pdf': |
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return 'pdf'; |
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case 'application/postscript': |
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return 'eps'; |
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case 'image/svg+xml': |
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return 'svg'; |
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default: |
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throw new Exception('Unable to find document extension for mime-type: '.$this->MIMEType); |
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} |
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// no break |
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default: |
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return parent::getValue($name); |
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} |
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} |
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// public methods |
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public function getImage($sourceFile = null) |
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{ |
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if (!isset($sourceFile)) { |
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$sourceFile = $this->FilesystemPath ? $this->FilesystemPath : $this->BlankPath; |
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} |
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$cmd = sprintf(static::$extractPageCommand, $sourceFile, static::$extractPageIndex); |
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$fileImage = imagecreatefromstring(shell_exec($cmd)); |
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return $fileImage; |
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} |
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// static methods |
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public static function analyzeFile($filename, $mediaInfo = []) |
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{ |
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$cmd = sprintf(static::$extractPageCommand, $filename, static::$extractPageIndex); |
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$pageIm = @imagecreatefromstring(shell_exec($cmd)); |
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if (!$pageIm) { |
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throw new Exception('Unable to convert PDF, ensure that imagemagick is installed on the server'); |
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} |
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$mediaInfo['width'] = imagesx($pageIm); |
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$mediaInfo['height'] = imagesy($pageIm); |
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return $mediaInfo; |
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} |
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} |
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Divergence /
framework
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