v1.0 Initial commit of project

vendor/robthree/twofactorauth/lib/Providers/Qr/ImageChartsQRCodeProvider.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace RobThree\Auth\Providers\Qr;
+
+/**
+ * Use https://image-charts.com to provide a QR code
+ */
+class ImageChartsQRCodeProvider extends BaseHTTPQRCodeProvider
+{
+    public function __construct(protected bool $verifyssl = true, public string $errorcorrectionlevel = 'L', public int $margin = 1)
+    {
+    }
+
+    public function getMimeType(): string
+    {
+        return 'image/png';
+    }
+
+    public function getQRCodeImage(string $qrText, int $size): string
+    {
+        return $this->getContent($this->getUrl($qrText, $size));
+    }
+
+    public function getUrl(string $qrText, int $size): string
+    {
+        $queryParameters = array(
+            'cht' => 'qr',
+            'chs' => ceil($size / 2) . 'x' . ceil($size / 2),
+            'chld' => $this->errorcorrectionlevel . '|' . $this->margin,
+            'chl' => $qrText,
+        );
+
+        return 'https://image-charts.com/chart?' . http_build_query($queryParameters);
+    }
+}