/* * This file is part of GNU Taler * (C) 2020 Taler Systems S.A. * * GNU Taler is free software; you can redistribute it and/or modify it under the * terms of the GNU General Public License as published by the Free Software * Foundation; either version 3, or (at your option) any later version. * * GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR * A PARTICULAR PURPOSE. See the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along with * GNU Taler; see the file COPYING. If not, see */ package net.taler.common import android.graphics.Bitmap import android.graphics.Bitmap.Config.RGB_565 import android.graphics.Color.BLACK import android.graphics.Color.WHITE import com.google.zxing.BarcodeFormat.QR_CODE import com.google.zxing.qrcode.QRCodeWriter object QrCodeManager { fun makeQrCode(text: String, size: Int = 256): Bitmap { val qrCodeWriter = QRCodeWriter() val bitMatrix = qrCodeWriter.encode(text, QR_CODE, size, size) val height = bitMatrix.height val width = bitMatrix.width val bmp = Bitmap.createBitmap(width, height, RGB_565) for (x in 0 until width) { for (y in 0 until height) { bmp.setPixel(x, y, if (bitMatrix.get(x, y)) BLACK else WHITE) } } return bmp } }