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<?php |
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/** |
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* Image |
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* |
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* @Author : Jens Kooij |
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* @Version: 1.0 |
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* @package: JNS MVC |
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* @Licence: http://creativecommons.org/licenses/by-nc-nd/3.0/ Attribution-NonCommercial-NoDerivs 3.0 Unported |
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*/ |
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namespace CloudControl\Cms\images { |
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class Image |
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{ |
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/** |
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* @var resource |
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*/ |
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private $_imageResource; |
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/** |
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* Load the a image resource into $this->_imageResource |
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* automagically :-) |
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* |
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* @param resource|string $imageContainer |
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* |
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* @throws \Exception |
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*/ |
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public function loadImage($imageContainer) |
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{ |
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if ($this->createImageResourceFromResource($imageContainer) || |
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$this->createImageResourceFromFile($imageContainer) || |
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$this->createImageResourceFromString($imageContainer) |
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) { |
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return; |
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} |
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throw new \RuntimeException('Could not create image resource, accepted inputs are: "resource of type (gd)", path_to_image and "string". <br /><pre>' . var_export($imageContainer, |
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true) . '</pre>'); |
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} |
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/** |
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* @param $imageContainer |
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* @return bool |
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*/ |
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private function createImageResourceFromResource($imageContainer) |
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{ |
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if (is_resource($imageContainer) && get_resource_type($imageContainer) === 'gd') { |
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$this->_imageResource = $imageContainer; |
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return true; |
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} |
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return false; |
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} |
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/** |
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* @param $imageContainer |
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* @return bool |
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* @throws \Exception |
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*/ |
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private function createImageResourceFromFile($imageContainer) |
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{ |
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if (is_string($imageContainer) && file_exists($imageContainer)) { |
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if ($this->getImageMimeType($imageContainer) === IMAGETYPE_BMP) { |
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$this->_imageResource = BitmapFactory::createImageFromBmp($imageContainer); |
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} else { |
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$imageContent = file_get_contents($imageContainer); |
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$this->_imageResource = imagecreatefromstring($imageContent); |
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} |
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return true; |
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} |
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return false; |
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} |
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/** |
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* @param $imageContainer |
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* @return bool |
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*/ |
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private function createImageResourceFromString($imageContainer) |
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{ |
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if (is_string($imageContainer)) { |
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$this->_imageResource = imagecreatefromstring($imageContainer); |
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return true; |
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} |
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return false; |
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} |
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/** |
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* Saves the image to a file |
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* |
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* @param string $path |
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* @param int $mimeTypeConstantValue |
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* @param int $quality |
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* @param resource $imageResource If no resource is given, uses $this->_imageResource |
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* |
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* @return bool |
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* @throws \Exception |
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*/ |
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public function saveImage($path, $mimeTypeConstantValue, $quality = 100, $imageResource = null) |
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{ |
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if ($imageResource === null) { |
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$imageResource = $this->getImageResource(); |
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} |
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if ($mimeTypeConstantValue == IMAGETYPE_GIF) { |
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return imagegif($imageResource, $path); |
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} |
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if ($mimeTypeConstantValue == IMAGETYPE_JPEG) { |
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return imagejpeg($imageResource, $path, $quality); |
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} |
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if ($mimeTypeConstantValue == IMAGETYPE_PNG) { |
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return imagepng($imageResource, $path, ((int)($quality / 10) - 1)); |
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} |
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throw new \RuntimeException('Not a valid mimetypeconstant given see function documentation'); |
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} |
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/** |
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* Returns either the Mime-Type Constant value |
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* or the default extension for the detected mime-type; |
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* |
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* @see http://www.php.net/manual/en/function.image-type-to-mime-type.php |
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* |
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* @param string $imagePath |
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* @param bool $getExtension |
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* |
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* @return integer |
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*/ |
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public function getImageMimeType($imagePath, $getExtension = false) |
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{ |
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if (function_exists('exif_imagetype')) { |
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$exif = exif_imagetype($imagePath); |
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} else { |
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$exif = false; |
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if ((list($width, $height, $type, $attr) = getimagesize($imagePath)) !== false) { |
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$exif = $type; |
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} |
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} |
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return $getExtension ? image_type_to_extension($exif) : $exif; |
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} |
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/** |
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* Returns the image resource |
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* @return resource |
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* @throws \Exception |
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*/ |
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final public function getImageResource() |
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{ |
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if (is_resource($this->_imageResource) && get_resource_type($this->_imageResource) === 'gd') { |
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return $this->_imageResource; |
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} |
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throw new \RuntimeException('Image resource is not set. Use $this->LoadImage to load an image into the resource'); |
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} |
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} |
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} |
jenskooij /
cloudcontrol
