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<?php |
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/** Created by Gorlum 08.01.2024 19:14 */ |
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use GIFEndec\Decoder; |
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use GIFEndec\Events\FrameDecodedEvent; |
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use GIFEndec\IO\FileStream; |
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use Tools\ImageContainer; |
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/** |
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* @property int $height |
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* @property int $width |
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*/ |
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class ImageFile { |
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public $dir = ''; |
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public $fileName = ''; |
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public $fullPath = ''; |
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private $image = null; |
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/** @var string|false $content Image file content */ |
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protected $content; |
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/** |
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* @param $fileName |
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* @param $dir |
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* |
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* @return static|null |
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*/ |
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public static function read($fileName, $dir = '') { |
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$that = new static($fileName, $dir); |
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if ($that->getImageContainer() === null) { |
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unset($that); |
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$that = null; |
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} |
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return $that; |
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} |
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/** |
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* @param string $fileName Name of image file. Can be full path to file or just filename. In latter case $dir will be used |
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* @param string $dir If present and filename is just name of file will we added to make full path. If empty - tools root folder will be assumed |
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*/ |
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public function __construct($fileName, $dir = '') { |
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if (dirname($fileName) !== '.') { |
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$this->dir = realpath(dirname($fileName)); |
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$this->fileName = basename($fileName); |
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} else { |
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$this->dir = realpath($dir ?: __DIR__ . '/../'); |
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$this->fileName = $fileName; |
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} |
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$this->dir = str_replace('\\', '/', $this->dir) . '/'; |
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$this->fullPath = $this->dir . $this->fileName; |
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} |
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public function __get($property) { |
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if (in_array($property, ['height', 'width',])) { |
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return $this->getImageContainer() ? $this->getImageContainer()->$property : 0; |
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} |
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return property_exists($this, $property) ? $this->$property : null; |
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} |
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// public function __set($property, $value) { |
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// if (property_exists($this, $property)) { |
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// $this->$property = $value; |
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// } |
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// |
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// return $this; |
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// } |
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/** |
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* @return ImageContainer |
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*/ |
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public function getImageContainer() { |
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if (empty($this->image)) { |
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$this->image = ImageContainer::load($this->fullPath); |
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} |
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return $this->image; |
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} |
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public function isAnimatedGif() { |
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// Checking file extension |
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if (!strtolower(pathinfo($this->fullPath, PATHINFO_EXTENSION)) === 'gif') { |
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return false; |
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} |
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// Counting frame(s) |
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if (substr($content = $this->loadContent(), 0, 4) !== 'GIF8') { |
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return false; |
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} |
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//an animated gif contains multiple "frames", with each frame having a |
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//header made up of: |
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// * a static 4-byte sequence (\x00\x21\xF9\x04) |
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// * 4 variable bytes |
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// * a static 2-byte sequence (\x00\x2C) |
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if (preg_match_all('#\x00\x21\xF9\x04.{4}\x00[\x2C\x21]#s', $content) <= 1) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* @return false|string |
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*/ |
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protected function loadContent() { |
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if (empty($this->content)) { |
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$this->content = file_get_contents($this->fullPath); |
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} |
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return $this->content; |
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} |
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} |
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supernova-ws /
SuperNova
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