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<?php |
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namespace Imagecow\Utils; |
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use Exception; |
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use Imagick; |
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use ImagickPixel; |
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use Imagecow; |
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/** |
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* Simple class to convert a svg file to png |
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* Requires Imagick. |
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*/ |
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class SvgExtractor |
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{ |
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protected $image; |
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/** |
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* Contructor. |
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* |
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* @param string $filename The path of the svg file |
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*/ |
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public function __construct($filename) |
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{ |
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if (!extension_loaded('imagick')) { |
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throw new Exception('SvgExtractor needs imagick extension'); |
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} |
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$image = new Imagick(); |
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$image->setBackgroundColor(new ImagickPixel('transparent')); |
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if (!is_file($filename)) { |
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throw new Exception("'$filename' is not a readable file"); |
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} |
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$image->readImage($filename); |
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$this->image = $image; |
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} |
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/** |
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* Get the svg as an image. |
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* |
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* @return \Imagecow\Image |
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*/ |
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public function get($width = 0, $height = 0) |
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{ |
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$imageWidth = $this->image->getImageWidth(); |
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$imageHeight = $this->image->getImageHeight(); |
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if ($width !== 0 && ($height === 0 || ($imageWidth / $width) > ($imageHeight / $height))) { |
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$height = ceil(($width / $imageWidth) * $imageHeight); |
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} elseif ($height !== 0) { |
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$width = ceil(($height / $imageHeight) * $imageWidth); |
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} else { |
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$width = $imageWidth; |
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$height = $imageHeight; |
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} |
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$image = new Imagick(); |
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$image->setBackgroundColor(new ImagickPixel('transparent')); |
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$image->setResolution($width, $height); |
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$blob = $this->image->getImageBlob(); |
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$blob = preg_replace('/<svg([^>]*) width="([^"]*)"/si', '<svg$1 width="'.$width.'px"', $blob); |
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$blob = preg_replace('/<svg([^>]*) height="([^"]*)"/si', '<svg$1 height="'.$height.'px"', $blob); |
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$image->readImageBlob($blob); |
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$image->setImageFormat('png'); |
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return new Imagecow\Image(new Imagecow\Libs\Imagick($image)); |
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} |
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} |
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oscarotero /
imagecow
