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<?php
/**
* Class IMagickLuminanceSource
*
* @created 17.01.2021
* @author Ashot Khanamiryan
* @author Smiley <smiley@chillerlan.net>
* @copyright 2021 Smiley
* @license MIT
*
* @noinspection PhpComposerExtensionStubsInspection
*/
namespace chillerlan\QRCode\Common;
use chillerlan\Settings\SettingsContainerInterface;
use Imagick;
use function count;
/**
* This class is used to help decode images from files which arrive as Imagick Resource
* It does not support rotation.
*/
class IMagickLuminanceSource extends LuminanceSourceAbstract{
protected Imagick $imagick;
/**
* IMagickLuminanceSource constructor.
*/
public function __construct(Imagick $imagick, ?SettingsContainerInterface $options = null){
parent::__construct($imagick->getImageWidth(), $imagick->getImageHeight(), $options);
$this->imagick = $imagick;
if($this->options->readerGrayscale){
$this->imagick->setImageColorspace(Imagick::COLORSPACE_GRAY);
}
if($this->options->readerInvertColors){
$this->imagick->negateImage($this->options->readerGrayscale);
}
if($this->options->readerIncreaseContrast){
for($i = 0; $i < 10; $i++){
$this->imagick->contrastImage(false); // misleading docs
}
}
$this->setLuminancePixels();
}
/**
*
*/
protected function setLuminancePixels():void{
$pixels = $this->imagick->exportImagePixels(1, 1, $this->width, $this->height, 'RGB', Imagick::PIXEL_CHAR);
$count = count($pixels);
for($i = 0; $i < $count; $i += 3){
$this->setLuminancePixel(($pixels[$i] & 0xff), ($pixels[($i + 1)] & 0xff), ($pixels[($i + 2)] & 0xff));
}
}
/** @inheritDoc */
public static function fromFile(string $path, ?SettingsContainerInterface $options = null):self{
return new self(new Imagick(self::checkFile($path)), $options);
}
/** @inheritDoc */
public static function fromBlob(string $blob, ?SettingsContainerInterface $options = null):self{
$im = new Imagick;
$im->readImageBlob($blob);
return new self($im, $options);
}
}
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