TwoFactorAuth/lib/Providers/Qr/EndroidQrCodeProvider.php

<?php
namespace RobThree\Auth\Providers\Qr;

use Endroid\QrCode\ErrorCorrectionLevel;
use Endroid\QrCode\QrCode;

class EndroidQrCodeProvider implements IQRCodeProvider
{
    public $bgcolor;
    public $color;
    public $margin;
    public $errorcorrectionlevel;
    protected $logoPath;
    protected $logoSize;

    public function __construct($bgcolor = 'ffffff', $color = '000000', $margin = 0, $errorcorrectionlevel = 'H')
    {
        $this->bgcolor = $this->handleColor($bgcolor);
        $this->color = $this->handleColor($color);
        $this->margin = $margin;
        $this->errorcorrectionlevel = $this->handleErrorCorrectionLevel($errorcorrectionlevel);
    }

    /**
     * Adds an image to the middle of the QR Code.
     * @param string $path Path to an image file
     * @param array|int $size Just the width, or [width, height]
     */
    public function setLogo($path, $size = null)
    {
        $this->logoPath = $path;
        $this->logoSize = (array)$size;
    }

    public function getMimeType()
    {
        return 'image/png';
    }

    public function getQRCodeImage($qrtext, $size)
    {
        $qrCode = new QrCode($qrtext);
        $qrCode->setSize($size);

        $qrCode->setErrorCorrectionLevel($this->errorcorrectionlevel);
        $qrCode->setMargin($this->margin);
        $qrCode->setBackgroundColor($this->bgcolor);
        $qrCode->setForegroundColor($this->color);

        if ($this->logoPath) {
            $qrCode->setLogoPath($this->logoPath);
            if ($this->logoSize) {
                $qrCode->setLogoSize($this->logoSize[0], $this->logoSize[1]);
            }
        }

        return $qrCode->writeString();
    }

    private function handleColor($color)
    {
        $split = str_split($color, 2);
        $r = hexdec($split[0]);
        $g = hexdec($split[1]);
        $b = hexdec($split[2]);

        return ['r' => $r, 'g' => $g, 'b' => $b, 'a' => 0];
    }

    private function handleErrorCorrectionLevel($level)
    {
        switch ($level) {
            case 'L':
                return ErrorCorrectionLevel::LOW();
            case 'M':
                return ErrorCorrectionLevel::MEDIUM();
            case 'Q':
                return ErrorCorrectionLevel::QUARTILE();
            case 'H':
                return ErrorCorrectionLevel::HIGH();
            default:
                return ErrorCorrectionLevel::HIGH();
        }
    }
}