package net.taler.merchantpos

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
    }

}