<?php

/**
 * Class IMagickLuminanceSource
 *
 * @created      17.01.2021
 * @author       Ashot Khanamiryan
 * @author       Smiley <smiley@chillerlan.net>
 * @copyright    2021 Smiley
 * @license      MIT
 *
 * @noinspection PhpComposerExtensionStubsInspection
 */
namespace WCPOS\Vendor\chillerlan\QRCode\Common;

use WCPOS\Vendor\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);
    }
}