Print: add QR-code to output

src/Utils/Qr.ts

@@ -0,0 +1,26 @@
+import Qrcode from "qrcode-generator"
+
+/**
+ * Creates a QR-code as Blob
+ */
+export default class Qr {
+    private _textToShow: string
+
+    constructor(textToShow: string) {
+        this._textToShow = textToShow
+    }
+
+    public toImageElement(totalSize: number): string {
+        console.log("Creating a QR code for", this._textToShow)
+        const typeNumber = 0
+        const errorCorrectionLevel = "L"
+        const qr = Qrcode(typeNumber, errorCorrectionLevel)
+        qr.addData(this._textToShow)
+        qr.make()
+        const moduleCount = qr.getModuleCount()
+        const img = document.createElement("img")
+        const cellSize = Math.round(totalSize / moduleCount)
+        console.log("Cellsize", cellSize)
+        return qr.createDataURL(cellSize)
+    }
+}