package at.gv.egiz.pdfas.web.helper;

import java.io.IOException;
import java.io.OutputStream;
import java.util.Hashtable;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

public class QRCodeGenerator {

	public static void generateQRCode(String content, OutputStream out, int size)
			throws WriterException, IOException {
		Hashtable hintMap = new Hashtable();
		hintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
		QRCodeWriter qrCodeWriter = new QRCodeWriter();
		BitMatrix byteMatrix = qrCodeWriter.encode(content,
				BarcodeFormat.QR_CODE, size, size, hintMap);

		MatrixToImageWriter.writeToStream(byteMatrix, "PNG", out);
	}

}