com.google.zxing.qrcode.encoder.ByteMatrix Java Examples

/**
 * Convert the ByteMatrix to BitMatrix.
 * 
 * @param matrix
 *            The input matrix.
 * @return The output matrix.
 */
private static BitMatrix convertByteMatrixToBitMatrix(ByteMatrix matrix) {
	int matrixWidgth = matrix.getWidth();
	int matrixHeight = matrix.getHeight();

	BitMatrix output = new BitMatrix(matrixWidgth, matrixHeight);
	output.clear();
	for (int i = 0; i < matrixWidgth; i++) {
		for (int j = 0; j < matrixHeight; j++) {
			// Zero is white in the bytematrix
			if (matrix.get(i, j) == 1) {
				output.set(i, j);
			}
		}
	}

	return output;
}
 

public static Bitmap getQRCode(final String data) {
    final ByteMatrix matrix;
    try {
        matrix = Encoder.encode(data, ErrorCorrectionLevel.M).getMatrix();
    } catch (final WriterException e) {
        throw new RuntimeException(e);
    }

    final int height = matrix.getHeight() * SCALE;
    final int width = matrix.getWidth() * SCALE;
    final int min = height < width ? height : width;

    final Bitmap mQRCode = Bitmap.createBitmap(min, min, Bitmap.Config.ARGB_8888);
    for (int x = 0; x < min; ++x)
        for (int y = 0; y < min; ++y)
            mQRCode.setPixel(x, y, matrix.get(x / SCALE, y / SCALE) == 1 ? Color.BLACK : Color.TRANSPARENT);
    return mQRCode;
}
 

/**
 * Convert the ByteMatrix to BitMatrix.
 *
 * @param matrix The input matrix.
 * @return The output matrix.
 */
private static BitMatrix convertByteMatrixToBitMatrix(ByteMatrix matrix) {
  int matrixWidgth = matrix.getWidth();
  int matrixHeight = matrix.getHeight();

  BitMatrix output = new BitMatrix(matrixWidgth, matrixHeight);
  output.clear();
  for (int i = 0; i < matrixWidgth; i++) {
    for (int j = 0; j < matrixHeight; j++) {
      // Zero is white in the bytematrix
      if (matrix.get(i, j) == 1) {
        output.set(i, j);
      }
    }
  }

  return output;
}
 

public Bitmap getQRCode() {
    if (mQRCode == null) {
        final ByteMatrix matrix;
        try {
            matrix = Encoder.encode(mData, ErrorCorrectionLevel.M).getMatrix();
        } catch (final WriterException e) {
            throw new RuntimeException(e);
        }
        final int height = matrix.getHeight() * SCALE;
        final int width = matrix.getWidth() * SCALE;
        mQRCode = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        for (int x = 0; x < width; ++x)
            for (int y = 0; y < height; ++y)
                mQRCode.setPixel(x, y, matrix.get(x / SCALE, y / SCALE) == 1 ? Color.BLACK : mBackgroundColor);
    }
    return mQRCode;
}
 

@Override
protected Single<Bitmap> build(String amount) {
    return Single.create(emitter -> {
        String username = preferenceUtils.retrieveUsername();
        String qrText = username + "," + amount;
                    Map<EncodeHintType, String> hints = new HashMap<>();
        hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
        QRCode qrCode = Encoder.encode(qrText, ErrorCorrectionLevel.H, hints);
        final ByteMatrix byteMatrix = qrCode.getMatrix();
        final int width = byteMatrix.getWidth();
        final int height = byteMatrix.getHeight();
        final Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        for (int y = 0; y < height; y++) {
            for (int x = 0; x < width; x++) {
                byte val = byteMatrix.get(x, y);
                bitmap.setPixel(x, y, val == 1 ? Color.BLACK : Color.WHITE);
            }
        }
        emitter.onSuccess(Bitmap.createScaledBitmap(bitmap, SIZE, SIZE, false));
    });
}
 

/**
 * Convert the ByteMatrix to BitMatrix.
 *
 * @param matrix The input matrix.
 * @return The output matrix.
 */
private static BitMatrix convertByteMatrixToBitMatrix(ByteMatrix matrix) {
  int matrixWidgth = matrix.getWidth();
  int matrixHeight = matrix.getHeight();

  BitMatrix output = new BitMatrix(matrixWidgth, matrixHeight);
  output.clear();
  for (int i = 0; i < matrixWidgth; i++) {
    for (int j = 0; j < matrixHeight; j++) {
      // Zero is white in the bytematrix
      if (matrix.get(i, j) == 1) {
        output.set(i, j);
      }
    }
  }

  return output;
}
 

/**
 * Convert the ByteMatrix to BitMatrix.
 *
 * @param matrix The input matrix.
 * @return The output matrix.
 */
private static BitMatrix convertByteMatrixToBitMatrix(ByteMatrix matrix) {
  int matrixWidgth = matrix.getWidth();
  int matrixHeight = matrix.getHeight();

  BitMatrix output = new BitMatrix(matrixWidgth, matrixHeight);
  output.clear();
  for (int i = 0; i < matrixWidgth; i++) {
    for (int j = 0; j < matrixHeight; j++) {
      // Zero is white in the bytematrix
      if (matrix.get(i, j) == 1) {
        output.set(i, j);
      }
    }
  }

  return output;
}
 

/**
 * Convert the ByteMatrix to BitMatrix.
 *
 * @param matrix The input matrix.
 * @return The output matrix.
 */
private static BitMatrix convertByteMatrixToBitMatrix(ByteMatrix matrix) {
  int matrixWidgth = matrix.getWidth();
  int matrixHeight = matrix.getHeight();

  BitMatrix output = new BitMatrix(matrixWidgth, matrixHeight);
  output.clear();
  for (int i = 0; i < matrixWidgth; i++) {
    for (int j = 0; j < matrixHeight; j++) {
      // Zero is white in the bytematrix
      if (matrix.get(i, j) == 1) {
        output.set(i, j);
      }
    }
  }

  return output;
}
 

public BitMatrix renderResult(int width, int height, int quietZone) {
    ByteMatrix input = code.getMatrix();
    if (input == null) {
        throw new IllegalStateException();
    }
    int inputWidth = input.getWidth();
    int inputHeight = input.getHeight();
    int qrWidth = inputWidth + (quietZone * 2);
    int qrHeight = inputHeight + (quietZone * 2);
    int outputWidth = Math.max(width, qrWidth);
    int outputHeight = Math.max(height, qrHeight);

    int multiple = Math.min(outputWidth / qrWidth, outputHeight / qrHeight);
    // Padding includes both the quiet zone and the extra white pixels to accommodate the requested
    // dimensions. For example, if input is 25x25 the QR will be 33x33 including the quiet zone.
    // If the requested size is 200x160, the multiple will be 4, for a QR of 132x132. These will
    // handle all the padding from 100x100 (the actual QR) up to 200x160.
    leftPadding = (outputWidth - (inputWidth * multiple)) / 2;
    topPadding = (outputHeight - (inputHeight * multiple)) / 2;

    BitMatrix output = new BitMatrix(outputWidth, outputHeight);

    for (int inputY = 0, outputY = topPadding; inputY < inputHeight; inputY++, outputY += multiple) {
        // Write the contents of this row of the barcode
        for (int inputX = 0, outputX = leftPadding; inputX < inputWidth; inputX++, outputX += multiple) {
            if (input.get(inputX, inputY) == 1) {
                output.setRegion(outputX, outputY, multiple, multiple);
            }
        }
    }

    return output;
}
 

private static BitMatrix renderResult(QRCode code, int width, int height, int quietZone) {
	ByteMatrix input = code.getMatrix();
	if (input == null) {
		throw new IllegalStateException();
	}
	int inputWidth = input.getWidth();
	int inputHeight = input.getHeight();
	int qrWidth = inputWidth + (quietZone * 2);
	int qrHeight = inputHeight + (quietZone * 2);
	int outputWidth = Math.max(width, qrWidth);
	int outputHeight = Math.max(height, qrHeight);

	int multiple = Math.min(outputWidth / qrWidth, outputHeight / qrHeight);
	// Padding includes both the quiet zone and the extra white pixels to
	// accommodate the requested
	// dimensions. For example, if input is 25x25 the QR will be 33x33
	// including the quiet zone.
	// If the requested size is 200x160, the multiple will be 4, for a QR of
	// 132x132. These will
	// handle all the padding from 100x100 (the actual QR) up to 200x160.
	int leftPadding = (outputWidth - (inputWidth * multiple)) / 2;
	int topPadding = (outputHeight - (inputHeight * multiple)) / 2;

	BitMatrix output = new BitMatrix(outputWidth, outputHeight);

	for (int inputY = 0, outputY = topPadding; inputY < inputHeight; inputY++, outputY += multiple) {
		// Write the contents of this row of the barcode
		for (int inputX = 0, outputX = leftPadding; inputX < inputWidth; inputX++, outputX += multiple) {
			if (input.get(inputX, inputY) == 1) {
				output.setRegion(outputX, outputY, multiple, multiple);
			}
		}
	}

	return output;
}
 

/**
 * This object renders a QR Code as a ByteMatrix 2D array of greyscale
 * values.
 * 
 * @author [email protected] (Daniel Switkin)
 */
public ByteMatrix encode(String contents) throws WriterException {

	if (contents == null || contents.length() == 0) {
		throw new IllegalArgumentException("Found empty contents");
	}

	Encoder.encode(contents, ErrorCorrectionLevel.L);
	return renderResult(code, QR_CODE_ELEMENT_MULTIPLE);
}
 

private static BitMatrix a(QRCode qrcode, int i, int j)
{
    ByteMatrix bytematrix = qrcode.getMatrix();
    if (bytematrix == null)
    {
        throw new IllegalStateException();
    }
    int k = bytematrix.getWidth();
    int l = bytematrix.getHeight();
    int i1 = k + 8;
    int j1 = l + 8;
    int k1 = Math.max(i, i1);
    int l1 = Math.max(j, j1);
    int i2 = Math.min(k1 / i1, l1 / j1);
    int j2 = (k1 - k * i2) / 2;
    int k2 = (l1 - l * i2) / 2;
    BitMatrix bitmatrix = new BitMatrix(k1, l1);
    int l2 = k2;
    int l3;
    for (int i3 = 0; i3 < l; i3 = l3)
    {
        int j3 = j2;
        for (int k3 = 0; k3 < k;)
        {
            if (bytematrix.get(k3, i3) == 1)
            {
                bitmatrix.setRegion(j3, l2, i2, i2);
            }
            k3++;
            j3 += i2;
        }

        l3 = i3 + 1;
        l2 += i2;
    }

    return bitmatrix;
}
 

private static BitMatrix renderResult(QRCode code, int width, int height, int quietZone) {
  ByteMatrix input = code.getMatrix();
  if (input == null) {
    throw new IllegalStateException();
  }
  int inputWidth = input.getWidth();
  int inputHeight = input.getHeight();
  int qrWidth = inputWidth + (quietZone << 1);
  int qrHeight = inputHeight + (quietZone << 1);
  int outputWidth = Math.max(width, qrWidth);
  int outputHeight = Math.max(height, qrHeight);

  int multiple = Math.min(outputWidth / qrWidth, outputHeight / qrHeight);
  // Padding includes both the quiet zone and the extra white pixels to accommodate the requested
  // dimensions. For example, if input is 25x25 the QR will be 33x33 including the quiet zone.
  // If the requested size is 200x160, the multiple will be 4, for a QR of 132x132. These will
  // handle all the padding from 100x100 (the actual QR) up to 200x160.
  int leftPadding = (outputWidth - (inputWidth * multiple)) / 2;
  int topPadding = (outputHeight - (inputHeight * multiple)) / 2;

  BitMatrix output = new BitMatrix(outputWidth, outputHeight);

  for (int inputY = 0, outputY = topPadding; inputY < inputHeight; inputY++, outputY += multiple) {
    // Write the contents of this row of the barcode
    for (int inputX = 0, outputX = leftPadding; inputX < inputWidth; inputX++, outputX += multiple) {
      if (input.get(inputX, inputY) == 1) {
        output.setRegion(outputX, outputY, multiple, multiple);
      }
    }
  }

  return output;
}
 

private static BitMatrix renderResult(QRCode code, int width, int height, int quietZone) {
  ByteMatrix input = code.getMatrix();
  if (input == null) {
    throw new IllegalStateException();
  }
  int inputWidth = input.getWidth();
  int inputHeight = input.getHeight();
  int qrWidth = inputWidth + (quietZone * 2);
  int qrHeight = inputHeight + (quietZone * 2);
  int outputWidth = Math.max(width, qrWidth);
  int outputHeight = Math.max(height, qrHeight);

  int multiple = Math.min(outputWidth / qrWidth, outputHeight / qrHeight);
  // Padding includes both the quiet zone and the extra white pixels to accommodate the requested
  // dimensions. For example, if input is 25x25 the QR will be 33x33 including the quiet zone.
  // If the requested size is 200x160, the multiple will be 4, for a QR of 132x132. These will
  // handle all the padding from 100x100 (the actual QR) up to 200x160.
  int leftPadding = (outputWidth - (inputWidth * multiple)) / 2;
  int topPadding = (outputHeight - (inputHeight * multiple)) / 2;

  BitMatrix output = new BitMatrix(outputWidth, outputHeight);

  for (int inputY = 0, outputY = topPadding; inputY < inputHeight; inputY++, outputY += multiple) {
    // Write the contents of this row of the barcode
    for (int inputX = 0, outputX = leftPadding; inputX < inputWidth; inputX++, outputX += multiple) {
      if (input.get(inputX, inputY) == 1) {
        output.setRegion(outputX, outputY, multiple, multiple);
      }
    }
  }

  return output;
}
 

private static BitMatrix renderResult(QRCode code, int width, int height, int quietZone) {
  ByteMatrix input = code.getMatrix();
  if (input == null) {
    throw new IllegalStateException();
  }
  int inputWidth = input.getWidth();
  int inputHeight = input.getHeight();
  int qrWidth = inputWidth + (quietZone * 2);
  int qrHeight = inputHeight + (quietZone * 2);
  int outputWidth = Math.max(width, qrWidth);
  int outputHeight = Math.max(height, qrHeight);

  int multiple = Math.min(outputWidth / qrWidth, outputHeight / qrHeight);
  // Padding includes both the quiet zone and the extra white pixels to accommodate the requested
  // dimensions. For example, if input is 25x25 the QR will be 33x33 including the quiet zone.
  // If the requested size is 200x160, the multiple will be 4, for a QR of 132x132. These will
  // handle all the padding from 100x100 (the actual QR) up to 200x160.
  int leftPadding = (outputWidth - (inputWidth * multiple)) / 2;
  int topPadding = (outputHeight - (inputHeight * multiple)) / 2;

  BitMatrix output = new BitMatrix(outputWidth, outputHeight);

  for (int inputY = 0, outputY = topPadding; inputY < inputHeight; inputY++, outputY += multiple) {
    // Write the contents of this row of the barcode
    for (int inputX = 0, outputX = leftPadding; inputX < inputWidth; inputX++, outputX += multiple) {
      if (input.get(inputX, inputY) == 1) {
        output.setRegion(outputX, outputY, multiple, multiple);
      }
    }
  }

  return output;
}
 

private static BitMatrix renderResult(QRCode code, int width, int height, int quietZone) {
  ByteMatrix input = code.getMatrix();
  if (input == null) {
    throw new IllegalStateException();
  }
  int inputWidth = input.getWidth();
  int inputHeight = input.getHeight();
  int qrWidth = inputWidth + (quietZone * 2);
  int qrHeight = inputHeight + (quietZone * 2);
  int outputWidth = Math.max(width, qrWidth);
  int outputHeight = Math.max(height, qrHeight);

  int multiple = Math.min(outputWidth / qrWidth, outputHeight / qrHeight);
  // Padding includes both the quiet zone and the extra white pixels to accommodate the requested
  // dimensions. For example, if input is 25x25 the QR will be 33x33 including the quiet zone.
  // If the requested size is 200x160, the multiple will be 4, for a QR of 132x132. These will
  // handle all the padding from 100x100 (the actual QR) up to 200x160.
  int leftPadding = (outputWidth - (inputWidth * multiple)) / 2;
  int topPadding = (outputHeight - (inputHeight * multiple)) / 2;

  BitMatrix output = new BitMatrix(outputWidth, outputHeight);

  for (int inputY = 0, outputY = topPadding; inputY < inputHeight; inputY++, outputY += multiple) {
    // Write the contents of this row of the barcode
    for (int inputX = 0, outputX = leftPadding; inputX < inputWidth; inputX++, outputX += multiple) {
      if (input.get(inputX, inputY) == 1) {
        output.setRegion(outputX, outputY, multiple, multiple);
      }
    }
  }

  return output;
}
 

private static BitMatrix renderResult(QRCode code, int width, int height, int quietZone) {
  ByteMatrix input = code.getMatrix();
  if (input == null) {
    throw new IllegalStateException();
  }
  int inputWidth = input.getWidth();
  int inputHeight = input.getHeight();
  int qrWidth = inputWidth + (quietZone * 2);
  int qrHeight = inputHeight + (quietZone * 2);
  int outputWidth = Math.max(width, qrWidth);
  int outputHeight = Math.max(height, qrHeight);

  int multiple = Math.min(outputWidth / qrWidth, outputHeight / qrHeight);
  // Padding includes both the quiet zone and the extra white pixels to accommodate the requested
  // dimensions. For example, if input is 25x25 the QR will be 33x33 including the quiet zone.
  // If the requested size is 200x160, the multiple will be 4, for a QR of 132x132. These will
  // handle all the padding from 100x100 (the actual QR) up to 200x160.
  int leftPadding = (outputWidth - (inputWidth * multiple)) / 2;
  int topPadding = (outputHeight - (inputHeight * multiple)) / 2;

  BitMatrix output = new BitMatrix(outputWidth, outputHeight);

  for (int inputY = 0, outputY = topPadding; inputY < inputHeight; inputY++, outputY += multiple) {
    // Write the contents of this row of the barcode
    for (int inputX = 0, outputX = leftPadding; inputX < inputWidth; inputX++, outputX += multiple) {
      if (input.get(inputX, inputY) == 1) {
        output.setRegion(outputX, outputY, multiple, multiple);
      }
    }
  }

  return output;
}
 

private static BitMatrix renderResult(QRCode code, int width, int height, int quietZone) {
  ByteMatrix input = code.getMatrix();
  if (input == null) {
    throw new IllegalStateException();
  }
  int inputWidth = input.getWidth();
  int inputHeight = input.getHeight();
  int qrWidth = inputWidth + (quietZone * 2);
  int qrHeight = inputHeight + (quietZone * 2);
  int outputWidth = Math.max(width, qrWidth);
  int outputHeight = Math.max(height, qrHeight);

  int multiple = Math.min(outputWidth / qrWidth, outputHeight / qrHeight);
  // Padding includes both the quiet zone and the extra white pixels to accommodate the requested
  // dimensions. For example, if input is 25x25 the QR will be 33x33 including the quiet zone.
  // If the requested size is 200x160, the multiple will be 4, for a QR of 132x132. These will
  // handle all the padding from 100x100 (the actual QR) up to 200x160.
  int leftPadding = (outputWidth - (inputWidth * multiple)) / 2;
  int topPadding = (outputHeight - (inputHeight * multiple)) / 2;

  BitMatrix output = new BitMatrix(outputWidth, outputHeight);

  for (int inputY = 0, outputY = topPadding; inputY < inputHeight; inputY++, outputY += multiple) {
    // Write the contents of this row of the barcode
    for (int inputX = 0, outputX = leftPadding; inputX < inputWidth; inputX++, outputX += multiple) {
      if (input.get(inputX, inputY) == 1) {
        output.setRegion(outputX, outputY, multiple, multiple);
      }
    }
  }

  return output;
}
 

private static BitMatrix renderResult(QRCode code, int width, int height, int quietZone) {
  ByteMatrix input = code.getMatrix();
  if (input == null) {
    throw new IllegalStateException();
  }
  int inputWidth = input.getWidth();
  int inputHeight = input.getHeight();
  int qrWidth = inputWidth + (quietZone * 2);
  int qrHeight = inputHeight + (quietZone * 2);
  int outputWidth = Math.max(width, qrWidth);
  int outputHeight = Math.max(height, qrHeight);

  int multiple = Math.min(outputWidth / qrWidth, outputHeight / qrHeight);
  // Padding includes both the quiet zone and the extra white pixels to accommodate the requested
  // dimensions. For example, if input is 25x25 the QR will be 33x33 including the quiet zone.
  // If the requested size is 200x160, the multiple will be 4, for a QR of 132x132. These will
  // handle all the padding from 100x100 (the actual QR) up to 200x160.
  int leftPadding = (outputWidth - (inputWidth * multiple)) / 2;
  int topPadding = (outputHeight - (inputHeight * multiple)) / 2;

  BitMatrix output = new BitMatrix(outputWidth, outputHeight);

  for (int inputY = 0, outputY = topPadding; inputY < inputHeight; inputY++, outputY += multiple) {
    // Write the contents of this row of the barcode
    for (int inputX = 0, outputX = leftPadding; inputX < inputWidth; inputX++, outputX += multiple) {
      if (input.get(inputX, inputY) == 1) {
        output.setRegion(outputX, outputY, multiple, multiple);
      }
    }
  }

  return output;
}
 

private static BitMatrix renderResult(QRCode code, int width, int height, int quietZone) {
    ByteMatrix input = code.getMatrix();
    if (input == null) {
        throw new IllegalStateException();
    }
    int inputWidth = input.getWidth();
    int inputHeight = input.getHeight();
    int qrWidth = inputWidth + (quietZone << 1);
    int qrHeight = inputHeight + (quietZone << 1);
    int outputWidth = Math.max(width, qrWidth);
    int outputHeight = Math.max(height, qrHeight);
    int multiple = Math.min(outputWidth / qrWidth, outputHeight / qrHeight);
    int leftPadding = (outputWidth - (inputWidth * multiple)) / 2;
    int topPadding = (outputHeight - (inputHeight * multiple)) / 2;
    BitMatrix output = new BitMatrix(outputWidth, outputHeight);
    int inputY = 0;
    int outputY = topPadding;
    while (inputY < inputHeight) {
        int inputX = 0;
        int outputX = leftPadding;
        while (inputX < inputWidth) {
            if (input.get(inputX, inputY) == (byte) 1) {
                output.setRegion(outputX, outputY, multiple, multiple);
            }
            inputX++;
            outputX += multiple;
        }
        inputY++;
        outputY += multiple;
    }
    return output;
}
 

private static BitMatrix renderResult(QRCode code, int width, int height, int quietZone) {
  ByteMatrix input = code.getMatrix();
  if (input == null) {
    throw new IllegalStateException();
  }
  int inputWidth = input.getWidth();
  int inputHeight = input.getHeight();
  int qrWidth = inputWidth + (quietZone * 2);
  int qrHeight = inputHeight + (quietZone * 2);
  int outputWidth = Math.max(width, qrWidth);
  int outputHeight = Math.max(height, qrHeight);

  int multiple = Math.min(outputWidth / qrWidth, outputHeight / qrHeight);
  // Padding includes both the quiet zone and the extra white pixels to accommodate the requested
  // dimensions. For example, if input is 25x25 the QR will be 33x33 including the quiet zone.
  // If the requested size is 200x160, the multiple will be 4, for a QR of 132x132. These will
  // handle all the padding from 100x100 (the actual QR) up to 200x160.
  int leftPadding = (outputWidth - (inputWidth * multiple)) / 2;
  int topPadding = (outputHeight - (inputHeight * multiple)) / 2;

  BitMatrix output = new BitMatrix(outputWidth, outputHeight);

  for (int inputY = 0, outputY = topPadding; inputY < inputHeight; inputY++, outputY += multiple) {
    // Write the contents of this row of the barcode
    for (int inputX = 0, outputX = leftPadding; inputX < inputWidth; inputX++, outputX += multiple) {
      if (input.get(inputX, inputY) == 1) {
        output.setRegion(outputX, outputY, multiple, multiple);
      }
    }
  }

  return output;
}
 

public Bitmap getQRCode() throws Exception {
    if (mQRCode == null) {
        final ByteMatrix matrix;
        matrix = Encoder.encode(mData, ErrorCorrectionLevel.M).getMatrix();
        final int height = matrix.getHeight() * SCALE;
        final int width = matrix.getWidth() * SCALE;
        mQRCode = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        for (int x = 0; x < width; ++x)
            for (int y = 0; y < height; ++y)
                mQRCode.setPixel(x, y, matrix.get(x / SCALE, y / SCALE) == 1 ? Color.BLACK : mBackgroundColor);
    }
    return mQRCode;
}
 

/**
 * Encode the given symbol info to a bit matrix.
 *
 * @param placement  The DataMatrix placement.
 * @param symbolInfo The symbol info to encode.
 * @return The bit matrix generated.
 */
private static BitMatrix encodeLowLevel(DefaultPlacement placement, SymbolInfo symbolInfo) {
  int symbolWidth = symbolInfo.getSymbolDataWidth();
  int symbolHeight = symbolInfo.getSymbolDataHeight();

  ByteMatrix matrix = new ByteMatrix(symbolInfo.getSymbolWidth(), symbolInfo.getSymbolHeight());

  int matrixY = 0;

  for (int y = 0; y < symbolHeight; y++) {
    // Fill the top edge with alternate 0 / 1
    int matrixX;
    if ((y % symbolInfo.matrixHeight) == 0) {
      matrixX = 0;
      for (int x = 0; x < symbolInfo.getSymbolWidth(); x++) {
        matrix.set(matrixX, matrixY, (x % 2) == 0);
        matrixX++;
      }
      matrixY++;
    }
    matrixX = 0;
    for (int x = 0; x < symbolWidth; x++) {
      // Fill the right edge with full 1
      if ((x % symbolInfo.matrixWidth) == 0) {
        matrix.set(matrixX, matrixY, true);
        matrixX++;
      }
      matrix.set(matrixX, matrixY, placement.getBit(x, y));
      matrixX++;
      // Fill the right edge with alternate 0 / 1
      if ((x % symbolInfo.matrixWidth) == symbolInfo.matrixWidth - 1) {
        matrix.set(matrixX, matrixY, (y % 2) == 0);
        matrixX++;
      }
    }
    matrixY++;
    // Fill the bottom edge with full 1
    if ((y % symbolInfo.matrixHeight) == symbolInfo.matrixHeight - 1) {
      matrixX = 0;
      for (int x = 0; x < symbolInfo.getSymbolWidth(); x++) {
        matrix.set(matrixX, matrixY, true);
        matrixX++;
      }
      matrixY++;
    }
  }

  return convertByteMatrixToBitMatrix(matrix);
}
 

/**
 * Encode the given symbol info to a bit matrix.
 *
 * @param placement  The DataMatrix placement.
 * @param symbolInfo The symbol info to encode.
 * @return The bit matrix generated.
 */
private static BitMatrix encodeLowLevel(DefaultPlacement placement, SymbolInfo symbolInfo) {
  int symbolWidth = symbolInfo.getSymbolDataWidth();
  int symbolHeight = symbolInfo.getSymbolDataHeight();

  ByteMatrix matrix = new ByteMatrix(symbolInfo.getSymbolWidth(), symbolInfo.getSymbolHeight());

  int matrixY = 0;

  for (int y = 0; y < symbolHeight; y++) {
    // Fill the top edge with alternate 0 / 1
    int matrixX;
    if ((y % symbolInfo.matrixHeight) == 0) {
      matrixX = 0;
      for (int x = 0; x < symbolInfo.getSymbolWidth(); x++) {
        matrix.set(matrixX, matrixY, (x % 2) == 0);
        matrixX++;
      }
      matrixY++;
    }
    matrixX = 0;
    for (int x = 0; x < symbolWidth; x++) {
      // Fill the right edge with full 1
      if ((x % symbolInfo.matrixWidth) == 0) {
        matrix.set(matrixX, matrixY, true);
        matrixX++;
      }
      matrix.set(matrixX, matrixY, placement.getBit(x, y));
      matrixX++;
      // Fill the right edge with alternate 0 / 1
      if ((x % symbolInfo.matrixWidth) == symbolInfo.matrixWidth - 1) {
        matrix.set(matrixX, matrixY, (y % 2) == 0);
        matrixX++;
      }
    }
    matrixY++;
    // Fill the bottom edge with full 1
    if ((y % symbolInfo.matrixHeight) == symbolInfo.matrixHeight - 1) {
      matrixX = 0;
      for (int x = 0; x < symbolInfo.getSymbolWidth(); x++) {
        matrix.set(matrixX, matrixY, true);
        matrixX++;
      }
      matrixY++;
    }
  }

  return convertByteMatrixToBitMatrix(matrix);
}
 

/**
 * Encode the given symbol info to a bit matrix.
 *
 * @param placement  The DataMatrix placement.
 * @param symbolInfo The symbol info to encode.
 * @return The bit matrix generated.
 */
private static BitMatrix encodeLowLevel(DefaultPlacement placement, SymbolInfo symbolInfo) {
  int symbolWidth = symbolInfo.getSymbolDataWidth();
  int symbolHeight = symbolInfo.getSymbolDataHeight();

  ByteMatrix matrix = new ByteMatrix(symbolInfo.getSymbolWidth(), symbolInfo.getSymbolHeight());

  int matrixY = 0;

  for (int y = 0; y < symbolHeight; y++) {
    // Fill the top edge with alternate 0 / 1
    int matrixX;
    if ((y % symbolInfo.matrixHeight) == 0) {
      matrixX = 0;
      for (int x = 0; x < symbolInfo.getSymbolWidth(); x++) {
        matrix.set(matrixX, matrixY, (x % 2) == 0);
        matrixX++;
      }
      matrixY++;
    }
    matrixX = 0;
    for (int x = 0; x < symbolWidth; x++) {
      // Fill the right edge with full 1
      if ((x % symbolInfo.matrixWidth) == 0) {
        matrix.set(matrixX, matrixY, true);
        matrixX++;
      }
      matrix.set(matrixX, matrixY, placement.getBit(x, y));
      matrixX++;
      // Fill the right edge with alternate 0 / 1
      if ((x % symbolInfo.matrixWidth) == symbolInfo.matrixWidth - 1) {
        matrix.set(matrixX, matrixY, (y % 2) == 0);
        matrixX++;
      }
    }
    matrixY++;
    // Fill the bottom edge with full 1
    if ((y % symbolInfo.matrixHeight) == symbolInfo.matrixHeight - 1) {
      matrixX = 0;
      for (int x = 0; x < symbolInfo.getSymbolWidth(); x++) {
        matrix.set(matrixX, matrixY, true);
        matrixX++;
      }
      matrixY++;
    }
  }

  return convertByteMatrixToBitMatrix(matrix);
}
 

/**
 * Encode the given symbol info to a bit matrix.
 *
 * @param placement  The DataMatrix placement.
 * @param symbolInfo The symbol info to encode.
 * @return The bit matrix generated.
 */
private static BitMatrix encodeLowLevel(DefaultPlacement placement, SymbolInfo symbolInfo) {
  int symbolWidth = symbolInfo.getSymbolDataWidth();
  int symbolHeight = symbolInfo.getSymbolDataHeight();

  ByteMatrix matrix = new ByteMatrix(symbolInfo.getSymbolWidth(), symbolInfo.getSymbolHeight());

  int matrixY = 0;

  for (int y = 0; y < symbolHeight; y++) {
    // Fill the top edge with alternate 0 / 1
    int matrixX;
    if ((y % symbolInfo.matrixHeight) == 0) {
      matrixX = 0;
      for (int x = 0; x < symbolInfo.getSymbolWidth(); x++) {
        matrix.set(matrixX, matrixY, (x % 2) == 0);
        matrixX++;
      }
      matrixY++;
    }
    matrixX = 0;
    for (int x = 0; x < symbolWidth; x++) {
      // Fill the right edge with full 1
      if ((x % symbolInfo.matrixWidth) == 0) {
        matrix.set(matrixX, matrixY, true);
        matrixX++;
      }
      matrix.set(matrixX, matrixY, placement.getBit(x, y));
      matrixX++;
      // Fill the right edge with alternate 0 / 1
      if ((x % symbolInfo.matrixWidth) == symbolInfo.matrixWidth - 1) {
        matrix.set(matrixX, matrixY, (y % 2) == 0);
        matrixX++;
      }
    }
    matrixY++;
    // Fill the bottom edge with full 1
    if ((y % symbolInfo.matrixHeight) == symbolInfo.matrixHeight - 1) {
      matrixX = 0;
      for (int x = 0; x < symbolInfo.getSymbolWidth(); x++) {
        matrix.set(matrixX, matrixY, true);
        matrixX++;
      }
      matrixY++;
    }
  }

  return convertByteMatrixToBitMatrix(matrix);
}
 

private static BitMatrix renderResult(QRCode code, int width, int height, int quietZone) {
    ByteMatrix input = code.getMatrix();
    if (input == null) {
        throw new IllegalStateException();
    }
    int inputWidth = input.getWidth();
    int inputHeight = input.getHeight();
    int qrWidth = inputWidth;
    int qrHeight = inputHeight;
    int outputWidth = Math.max(width, qrWidth);
    int outputHeight = Math.max(height, qrHeight);

    int multiple = Math.min(outputWidth / qrWidth, outputHeight / qrHeight);
    // Padding includes both the quiet zone and the extra white pixels to
    // accommodate the requested
    // dimensions. For example, if input is 25x25 the QR will be 33x33
    // including the quiet zone.
    // If the requested size is 200x160, the multiple will be 4, for a QR of
    // 132x132. These will
    // handle all the padding from 100x100 (the actual QR) up to 200x160.

    int leftPadding = (outputWidth - (inputWidth * multiple)) / 2;
    int topPadding = (outputHeight - (inputHeight * multiple)) / 2;

    if (leftPadding >= 0) {
        outputWidth = outputWidth - 2 * leftPadding;
        leftPadding = 0;
    }
    if (topPadding >= 0) {
        outputHeight = outputHeight - 2 * topPadding;
        topPadding = 0;
    }

    BitMatrix output = new BitMatrix(outputWidth, outputHeight);

    for (int inputY = 0, outputY = topPadding; inputY < inputHeight; inputY++, outputY += multiple) {
        // Write the contents of this row of the barcode
        for (int inputX = 0, outputX = leftPadding; inputX < inputWidth; inputX++, outputX += multiple) {
            if (input.get(inputX, inputY) == 1) {
                output.setRegion(outputX, outputY, multiple, multiple);
            }
        }
    }

    return output;
}
 

/**
 * Encode the given symbol info to a bit matrix.
 * 
 * @param placement
 *            The DataMatrix placement.
 * @param symbolInfo
 *            The symbol info to encode.
 * @return The bit matrix generated.
 */
private static BitMatrix encodeLowLevel(DefaultPlacement placement, SymbolInfo symbolInfo) {
	int symbolWidth = symbolInfo.getSymbolDataWidth();
	int symbolHeight = symbolInfo.getSymbolDataHeight();

	ByteMatrix matrix = new ByteMatrix(symbolInfo.getSymbolWidth(), symbolInfo.getSymbolHeight());

	int matrixY = 0;

	for (int y = 0; y < symbolHeight; y++) {
		// Fill the top edge with alternate 0 / 1
		int matrixX;
		if ((y % symbolInfo.matrixHeight) == 0) {
			matrixX = 0;
			for (int x = 0; x < symbolInfo.getSymbolWidth(); x++) {
				matrix.set(matrixX, matrixY, (x % 2) == 0);
				matrixX++;
			}
			matrixY++;
		}
		matrixX = 0;
		for (int x = 0; x < symbolWidth; x++) {
			// Fill the right edge with full 1
			if ((x % symbolInfo.matrixWidth) == 0) {
				matrix.set(matrixX, matrixY, true);
				matrixX++;
			}
			matrix.set(matrixX, matrixY, placement.getBit(x, y));
			matrixX++;
			// Fill the right edge with alternate 0 / 1
			if ((x % symbolInfo.matrixWidth) == symbolInfo.matrixWidth - 1) {
				matrix.set(matrixX, matrixY, (y % 2) == 0);
				matrixX++;
			}
		}
		matrixY++;
		// Fill the bottom edge with full 1
		if ((y % symbolInfo.matrixHeight) == symbolInfo.matrixHeight - 1) {
			matrixX = 0;
			for (int x = 0; x < symbolInfo.getSymbolWidth(); x++) {
				matrix.set(matrixX, matrixY, true);
				matrixX++;
			}
			matrixY++;
		}
	}

	return convertByteMatrixToBitMatrix(matrix);
}
 

/**
 * Convert a string to QR Code byte array compatible with ESC/POS printer.
 *
 * @param data String data to convert in QR Code
 * @return Bytes contain the image in ESC/POS command
 */
public static byte[] QRCodeDataToBytes(String data, int size) {

    ByteMatrix byteMatrix = null;

    try {
        EnumMap<EncodeHintType, Object> hints = new EnumMap<EncodeHintType, Object>(EncodeHintType.class);
        hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");

        QRCode code = Encoder.encode(data, ErrorCorrectionLevel.L, hints);
        byteMatrix = code.getMatrix();

    } catch (WriterException e) {
        e.printStackTrace();
    }

    if (byteMatrix == null) {
        return PrinterCommands.initImageCommand(0, 0);
    }

    int
            width = byteMatrix.getWidth(),
            height = byteMatrix.getHeight(),
            coefficient = Math.round((float) size / (float) width),
            imageWidth = width * coefficient,
            imageHeight = height * coefficient,
            bytesByLine = (int) Math.ceil(((float) imageWidth) / 8f),
            i = 8;

    if (coefficient < 1) {
        return PrinterCommands.initImageCommand(0, 0);
    }

    byte[] imageBytes = PrinterCommands.initImageCommand(bytesByLine, imageHeight);

    for (int y = 0; y < height; y++) {
        byte[] lineBytes = new byte[bytesByLine];
        int j = 0, multipleX = coefficient;
        boolean isBlack = false;
        for (int x = -1; x < width;) {
            StringBuilder stringBinary = new StringBuilder();
            for (int k = 0; k < 8; k++) {
                if(multipleX == coefficient) {
                    isBlack = ++x < width && byteMatrix.get(x, y) == 1;
                    multipleX = 0;
                }
                stringBinary.append(isBlack ? "1" : "0");
                ++multipleX;
            }
            lineBytes[j++] = (byte) Integer.parseInt(stringBinary.toString(), 2);
        }

        for (int multipleY = 0; multipleY < coefficient; ++multipleY) {
            System.arraycopy(lineBytes, 0, imageBytes, i, lineBytes.length);
            i += lineBytes.length;
        }
    }

    return imageBytes;
}
 

public static ByteMatrix encode(String contents) throws WriterException {

        if (contents == null || contents.length() == 0) {
            throw new IllegalArgumentException("Found empty contents");
        }

        QRCode code = Encoder.encode(contents, ErrorCorrectionLevel.L);

        return renderResult(code, QR_CODE_ELEMENT_MULTIPLE);
    }