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/*
* 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 <http://www.gnu.org/licenses/>
*/
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
}
}
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