private static BitMatrix extractPureBits(BitMatrix bitmatrix) throws NotFoundException {
int ai[] = bitmatrix.getTopLeftOnBit();
int ai1[] = bitmatrix.getBottomRightOnBit();
if (ai == null || ai1 == null) {
throw NotFoundException.getNotFoundInstance();
}
int l = moduleSize(ai, bitmatrix);
int i1 = ai[1];
int i = ai1[1];
int j1 = ai[0];
int k1 = ((ai1[0] - j1) + 1) / l;
int l1 = ((i - i1) + 1) / l;
if (k1 <= 0 || l1 <= 0) {
throw NotFoundException.getNotFoundInstance();
}
int i2 = l >> 1;
BitMatrix bitmatrix1 = new BitMatrix(k1, l1);
for (int j = 0; j < l1; j++) {
for (int k = 0; k < k1; k++) {
if (bitmatrix.get(k * l + (j1 + i2), i1 + i2 + j * l)) {
bitmatrix1.set(k, j);
}
}
}
return bitmatrix1;
}
public final BitMatrix sampleGrid(
BitMatrix bitmatrix, int i, int j, PerspectiveTransform perspectivetransform)
throws NotFoundException {
if (i <= 0 || j <= 0) {
throw NotFoundException.getNotFoundInstance();
}
BitMatrix bitmatrix1 = new BitMatrix(i, j);
float af[] = new float[i << 1];
for (i = 0; i < j; i++) {
int i1 = af.length;
float f = i;
for (int k = 0; k < i1; k += 2) {
af[k] = (float) (k >> 1) + 0.5F;
af[k + 1] = f + 0.5F;
}
perspectivetransform.transformPoints(af);
checkAndNudgePoints(bitmatrix, af);
int l = 0;
while (l < i1) {
try {
if (bitmatrix.get((int) af[l], (int) af[l + 1])) {
bitmatrix1.set(l >> 1, i);
}
}
// Misplaced declaration of an exception variable
catch (BitMatrix bitmatrix) {
throw NotFoundException.getNotFoundInstance();
}
l += 2;
}
}
return bitmatrix1;
}
public static BitMatrix parse(String stringRepresentation, String setString, String unsetString) {
if (stringRepresentation == null) {
throw new IllegalArgumentException();
}
boolean[] bits = new boolean[stringRepresentation.length()];
int bitsPos = 0;
int rowStartPos = 0;
int rowLength = -1;
int nRows = 0;
int pos = 0;
while (pos < stringRepresentation.length()) {
if (stringRepresentation.charAt(pos) == '\n' || stringRepresentation.charAt(pos) == '\r') {
if (bitsPos > rowStartPos) {
if (rowLength == -1) {
rowLength = bitsPos - rowStartPos;
} else if (bitsPos - rowStartPos != rowLength) {
throw new IllegalArgumentException("row lengths do not match");
}
rowStartPos = bitsPos;
nRows++;
}
pos++;
} else if (stringRepresentation.substring(pos, pos + setString.length()).equals(setString)) {
pos += setString.length();
bits[bitsPos] = true;
bitsPos++;
} else if (stringRepresentation
.substring(pos, pos + unsetString.length())
.equals(unsetString)) {
pos += unsetString.length();
bits[bitsPos] = false;
bitsPos++;
} else {
throw new IllegalArgumentException(
"illegal character encountered: " + stringRepresentation.substring(pos));
}
}
// no EOL at end?
if (bitsPos > rowStartPos) {
if (rowLength == -1) {
rowLength = bitsPos - rowStartPos;
} else if (bitsPos - rowStartPos != rowLength) {
throw new IllegalArgumentException("row lengths do not match");
}
nRows++;
}
BitMatrix matrix = new BitMatrix(rowLength, nRows);
for (int i = 0; i < bitsPos; i++) {
if (bits[i]) {
matrix.set(i % rowLength, i / rowLength);
}
}
return matrix;
}
/**
* Convenience method that can decode a Data Matrix Code represented as a 2D array of booleans.
* "true" is taken to mean a black module.
*
* @param image booleans representing white/black Data Matrix Code modules
* @return text and bytes encoded within the Data Matrix Code
* @throws FormatException if the Data Matrix Code cannot be decoded
* @throws ChecksumException if error correction fails
*/
public DecoderResult decode(boolean[][] image) throws FormatException, ChecksumException {
int dimension = image.length;
BitMatrix bits = new BitMatrix(dimension);
for (int i = 0; i < dimension; i++) {
for (int j = 0; j < dimension; j++) {
if (image[i][j]) {
bits.set(j, i);
}
}
}
return decode(bits);
}
/**
* This method detects a code in a "pure" image -- that is, pure monochrome image which contains
* only an unrotated, unskewed, image of a code, with some white border around it. This is a
* specialized method that works exceptionally fast in this special case.
*
* @see com.google.zxing.pdf417.PDF417Reader#extractPureBits(BitMatrix)
* @see com.google.zxing.datamatrix.DataMatrixReader#extractPureBits(BitMatrix)
*/
private static BitMatrix extractPureBits(BitMatrix image) throws NotFoundException {
int[] leftTopBlack = image.getTopLeftOnBit();
int[] rightBottomBlack = image.getBottomRightOnBit();
if (leftTopBlack == null || rightBottomBlack == null) {
throw NotFoundException.getNotFoundInstance();
}
int moduleSize = moduleSize(leftTopBlack, image);
int top = leftTopBlack[1];
int bottom = rightBottomBlack[1];
int left = leftTopBlack[0];
int right = rightBottomBlack[0];
if (bottom - top != right - left) {
// Special case, where bottom-right module wasn't black so we found
// something else in
// the last row
// Assume it's a square, so use height as the width
right = left + (bottom - top);
}
int matrixWidth = (right - left + 1) / moduleSize;
int matrixHeight = (bottom - top + 1) / moduleSize;
if (matrixWidth <= 0 || matrixHeight <= 0) {
throw NotFoundException.getNotFoundInstance();
}
if (matrixHeight != matrixWidth) {
// Only possibly decode square regions
throw NotFoundException.getNotFoundInstance();
}
// Push in the "border" by half the module width so that we start
// sampling in the middle of the module. Just in case the image is a
// little off, this will help recover.
int nudge = moduleSize >> 1;
top += nudge;
left += nudge;
// Now just read off the bits
BitMatrix bits = new BitMatrix(matrixWidth, matrixHeight);
for (int y = 0; y < matrixHeight; y++) {
int iOffset = top + y * moduleSize;
for (int x = 0; x < matrixWidth; x++) {
if (image.get(left + x * moduleSize, iOffset)) {
bits.set(x, y);
}
}
}
return bits;
}
/*
* 去白边
*/
public static BitMatrix deleteWhite(BitMatrix matrix) {
int[] rec = matrix.getEnclosingRectangle();
int resWidth = rec[2] + 1;
int resHeight = rec[3] + 1;
BitMatrix resMatrix = new BitMatrix(resWidth, resHeight);
resMatrix.clear();
for (int i = 0; i < resWidth; i++) {
for (int j = 0; j < resHeight; j++) {
if (matrix.get(i + rec[0], j + rec[1])) resMatrix.set(i, j);
}
}
return resMatrix;
}
/**
* 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;
}
private static BitMatrix updateBit(BitMatrix matrix, int margin) {
int tempM = margin * 2;
int[] rec = matrix.getEnclosingRectangle(); // 获取二维码图案的属性
int resWidth = rec[2] + tempM;
int resHeight = rec[3] + tempM;
BitMatrix resMatrix = new BitMatrix(resWidth, resHeight); // 按照自定义边框生成新的BitMatrix
resMatrix.clear();
for (int i = margin; i < resWidth - margin; i++) { // 循环，将二维码图案绘制到新的bitMatrix中
for (int j = margin; j < resHeight - margin; j++) {
if (matrix.get(i - margin + rec[0], j - margin + rec[1])) {
resMatrix.set(i, j);
}
}
}
return resMatrix;
}
// In case the golden images are not monochromatic, convert the RGB values to greyscale.
private static BitMatrix createMatrixFromImage(BufferedImage image) {
int width = image.getWidth();
int height = image.getHeight();
int[] pixels = new int[width * height];
image.getRGB(0, 0, width, height, pixels, 0, width);
BitMatrix matrix = new BitMatrix(width, height);
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
int pixel = pixels[y * width + x];
int luminance =
(306 * ((pixel >> 16) & 0xFF) + 601 * ((pixel >> 8) & 0xFF) + 117 * (pixel & 0xFF))
>> 10;
if (luminance <= 0x7F) {
matrix.set(x, y);
}
}
}
return matrix;
}
public void encode(String str, String path, int width, int height) {
try {
Map hints = new HashMap();
hints.put(EncodeHintType.MARGIN, 0);
// hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
BitMatrix byteMatrix =
new MultiFormatWriter().encode(str, BarcodeFormat.QR_CODE, width, height, hints);
/** tianboalei 2015-1-22 去掉生成二维码时周围的白圈 */
// 1
int[] rec = byteMatrix.getEnclosingRectangle();
int resWidth = rec[2] + 1;
int resHeight = rec[3] + 1;
BitMatrix resMatrix = new BitMatrix(resWidth, resHeight);
resMatrix.clear();
for (int i = 0; i < resWidth; i++) {
for (int j = 0; j < resHeight; j++) {
if (byteMatrix.get(i + rec[0], j + rec[1])) {
resMatrix.set(i, j);
}
}
}
// 2
int widthT = resMatrix.getWidth();
int heightT = resMatrix.getHeight();
BufferedImage image = new BufferedImage(widthT, heightT, BufferedImage.TYPE_INT_ARGB);
for (int x = 0; x < widthT; x++) {
for (int y = 0; y < heightT; y++) {
image.setRGB(
x, y, resMatrix.get(x, y) == true ? Color.BLACK.getRGB() : Color.WHITE.getRGB());
}
}
/** 去掉二维码周围白圈结束 */
File file = new File(path);
writeToFile(resMatrix, "png", file);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* This method detects a code in a "pure" image -- that is, pure monochrome image which contains
* only an unrotated, unskewed, image of a code, with some white border around it. This is a
* specialized method that works exceptionally fast in this special case.
*
* @see com.google.zxing.pdf417.PDF417Reader#extractPureBits(BitMatrix)
* @see com.google.zxing.qrcode.QRCodeReader#extractPureBits(BitMatrix)
*/
private static BitMatrix extractPureBits(BitMatrix image) throws NotFoundException {
int[] leftTopBlack = image.getTopLeftOnBit();
int[] rightBottomBlack = image.getBottomRightOnBit();
if (leftTopBlack == null || rightBottomBlack == null) {
throw NotFoundException.getNotFoundInstance();
}
int moduleSize = moduleSize(leftTopBlack, image);
int top = leftTopBlack[1];
int bottom = rightBottomBlack[1];
int left = leftTopBlack[0];
int right = rightBottomBlack[0];
int matrixWidth = (right - left + 1) / moduleSize;
int matrixHeight = (bottom - top + 1) / moduleSize;
if (matrixWidth == 0 || matrixHeight == 0) {
throw NotFoundException.getNotFoundInstance();
}
// Push in the "border" by half the module width so that we start
// sampling in the middle of the module. Just in case the image is a
// little off, this will help recover.
int nudge = moduleSize >> 1;
top += nudge;
left += nudge;
// Now just read off the bits
BitMatrix bits = new BitMatrix(matrixWidth, matrixHeight);
for (int y = 0; y < matrixHeight; y++) {
int iOffset = top + y * moduleSize;
for (int x = 0; x < matrixWidth; x++) {
if (image.get(left + x * moduleSize, iOffset)) {
bits.set(x, y);
}
}
}
return bits;
}
/**
* Encode.
*
* @param text the text to encode
* @return the image
*/
public Image encode(String text) {
// Encode the text
QRCode qrcode = new QRCode();
try {
Encoder.encode(text, ErrorCorrectionLevel.H, qrcode);
} catch (WriterException e) {
e.printStackTrace();
}
byte[][] matrix = qrcode.getMatrix().getArray();
int size = qrcode.getMatrixWidth() * scale;
// Make the BufferedImage that are to hold the QRCode
BufferedImage im = new BufferedImage(size, size, BufferedImage.TYPE_INT_RGB);
im.createGraphics();
Graphics2D g = (Graphics2D) im.getGraphics();
g.setColor(Color.WHITE);
g.fillRect(0, 0, size, size);
// BitMatrix for validation
BitMatrix bm = new BitMatrix(qrcode.getMatrixWidth());
// paint the image using the ByteMatrik
for (int h = 0; h < qrcode.getMatrixWidth(); h++) {
for (int w = 0; w < qrcode.getMatrixWidth(); w++) {
// Find the colour of the dot
if (matrix[h][w] == 0) g.setColor(Color.WHITE);
else {
g.setColor(Color.BLACK);
bm.set(w, h); // build the BitMatrix
}
// Paint the dot
g.fillRect(w * scale, h * scale, scale, scale);
}
}
return im;
}
// Does not sharpen the data, as this call is intended to only be used by 2D Readers.
public BitMatrix getBlackMatrix() throws NotFoundException {
LuminanceSource source = getLuminanceSource();
int width = source.getWidth();
int height = source.getHeight();
BitMatrix matrix = new BitMatrix(width, height);
// Quickly calculates the histogram by sampling four rows from the image. This proved to be
// more robust on the blackbox tests than sampling a diagonal as we used to do.
initArrays(width);
int[] localBuckets = buckets;
for (int y = 1; y < 5; y++) {
int row = height * y / 5;
byte[] localLuminances = source.getRow(row, luminances);
int right = (width << 2) / 5;
for (int x = width / 5; x < right; x++) {
int pixel = localLuminances[x] & 0xff;
localBuckets[pixel >> LUMINANCE_SHIFT]++;
}
}
int blackPoint = estimateBlackPoint(localBuckets);
// We delay reading the entire image luminance until the black point estimation succeeds.
// Although we end up reading four rows twice, it is consistent with our motto of
// "fail quickly" which is necessary for continuous scanning.
byte[] localLuminances = source.getMatrix();
for (int y = 0; y < height; y++) {
int offset = y * width;
for (int x = 0; x < width; x++) {
int pixel = localLuminances[offset + x] & 0xff;
if (pixel < blackPoint) {
matrix.set(x, y);
}
}
}
return matrix;
}
/**
* This method detects a code in a "pure" image -- that is, pure monochrome image which contains
* only an unrotated, unskewed, image of a code, with some white border around it. This is a
* specialized method that works exceptionally fast in this special case.
*
* @see com.google.zxing.datamatrix.DataMatrixReader#extractPureBits(BitMatrix)
*/
private static BitMatrix extractPureBits(BitMatrix image) throws NotFoundException {
int[] leftTopBlack = image.getTopLeftOnBit();
int[] rightBottomBlack = image.getBottomRightOnBit();
if (leftTopBlack == null || rightBottomBlack == null) {
throw NotFoundException.getNotFoundInstance();
}
float moduleSize = moduleSize(leftTopBlack, image);
int top = leftTopBlack[1];
int bottom = rightBottomBlack[1];
int left = leftTopBlack[0];
int right = rightBottomBlack[0];
// Sanity check!
if (left >= right || top >= bottom) {
throw NotFoundException.getNotFoundInstance();
}
if (bottom - top != right - left) {
// Special case, where bottom-right module wasn't black so we found
// something else in the last row
// Assume it's a square, so use height as the width
right = left + (bottom - top);
}
int matrixWidth = Math.round((right - left + 1) / moduleSize);
int matrixHeight = Math.round((bottom - top + 1) / moduleSize);
if (matrixWidth <= 0 || matrixHeight <= 0) {
throw NotFoundException.getNotFoundInstance();
}
if (matrixHeight != matrixWidth) {
// Only possibly decode square regions
throw NotFoundException.getNotFoundInstance();
}
// Push in the "border" by half the module width so that we start
// sampling in the middle of the module. Just in case the image is a
// little off, this will help recover.
int nudge = (int) (moduleSize / 2.0f);
top += nudge;
left += nudge;
// But careful that this does not sample off the edge
int nudgedTooFarRight = left + (int) ((matrixWidth - 1) * moduleSize) - (right - 1);
if (nudgedTooFarRight > 0) {
if (nudgedTooFarRight > nudge) {
// Neither way fits; abort
throw NotFoundException.getNotFoundInstance();
}
left -= nudgedTooFarRight;
}
int nudgedTooFarDown = top + (int) ((matrixHeight - 1) * moduleSize) - (bottom - 1);
if (nudgedTooFarDown > 0) {
if (nudgedTooFarDown > nudge) {
// Neither way fits; abort
throw NotFoundException.getNotFoundInstance();
}
top -= nudgedTooFarDown;
}
// Now just read off the bits
BitMatrix bits = new BitMatrix(matrixWidth, matrixHeight);
for (int y = 0; y < matrixHeight; y++) {
int iOffset = top + (int) (y * moduleSize);
for (int x = 0; x < matrixWidth; x++) {
if (image.get(left + (int) (x * moduleSize), iOffset)) {
bits.set(x, y);
}
}
}
return bits;
}
