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<?php |
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/** |
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* @package Application Utils |
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* @subpackage ImageHelper |
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* @see \AppUtils\ImageHelper\ImageTrimmer |
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*/ |
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declare(strict_types=1); |
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namespace AppUtils\ImageHelper; |
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use AppUtils\ImageHelper; |
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use AppUtils\ImageHelper_Exception; |
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use AppUtils\RGBAColor; |
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use AppUtils\RGBAColor\ColorFactory; |
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use GdImage; |
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/** |
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* Specialized class used for trimming images. |
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* |
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* @package Application Utils |
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* @subpackage ImageHelper |
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* @author Sebastian Mordziol <[email protected]> |
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*/ |
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class ImageTrimmer |
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{ |
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/** |
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* @var resource|GdImage |
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*/ |
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private $sourceImage; |
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private RGBAColor $trimColor; |
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private ImageHelper $helper; |
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/** |
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* @param ImageHelper $helper |
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* @param resource|GdImage $sourceImage |
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* @param RGBAColor|null $trimColor |
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* @throws ImageHelper_Exception |
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*/ |
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public function __construct(ImageHelper $helper, $sourceImage, ?RGBAColor $trimColor=null) |
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{ |
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ImageHelper::requireResource($sourceImage); |
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$this->helper = $helper; |
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$this->sourceImage = $sourceImage; |
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$this->trimColor = $this->detectTrimColor($trimColor); |
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} |
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private function detectTrimColor(?RGBAColor $trimColor) : RGBAColor |
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{ |
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$targetColor = ColorFactory::createAuto($trimColor); |
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if($targetColor !== null) |
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{ |
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return $targetColor; |
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} |
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return $this->helper->getIndexedColors( |
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$this->sourceImage, |
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(int)imagecolorat($this->sourceImage, 0, 0) |
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); |
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} |
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/** |
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* @return resource|GdImage|null |
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*/ |
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public function trim() |
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{ |
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$img = imagecropauto( |
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$this->sourceImage, |
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IMG_CROP_THRESHOLD, |
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0.1, // Does not work at all with 0.0 |
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imagecolorclosestalpha( |
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$this->sourceImage, |
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$this->trimColor->getRed()->get8Bit(), |
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$this->trimColor->getGreen()->get8Bit(), |
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$this->trimColor->getBlue()->get8Bit(), |
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$this->trimColor->getAlpha()->get7Bit() |
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) |
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); |
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if($img !== false) { |
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return $img; |
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} |
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return null; |
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} |
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} |
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Mistralys /
application-utils
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