Ejemplo n.º 1
0
        public ByteMatrix encode(String contents, BarcodeFormat format, int width, int height,Hashtable hints)
        {
            if (contents == null || contents.Length == 0) {
              throw new ArgumentException("Found empty contents");
            }

            if (format != BarcodeFormat.QR_CODE) {
              throw new ArgumentException("Can only encode QR_CODE, but got " + format);
            }

            if (width < 0 || height < 0) {
              throw new ArgumentException("Requested dimensions are too small: " + width + 'x' +
                  height);
            }

            ErrorCorrectionLevel errorCorrectionLevel = ErrorCorrectionLevel.L;
            if (hints != null) {
              ErrorCorrectionLevel requestedECLevel = (ErrorCorrectionLevel) hints[EncodeHintType.ERROR_CORRECTION];
              if (requestedECLevel != null) {
                errorCorrectionLevel = requestedECLevel;
              }
            }

            QRCode code = new QRCode();
            Encoder.encode(contents, errorCorrectionLevel, code);
            return renderResult(code, width, height);
        }
Ejemplo n.º 2
0
		public static void  encode(System.String content, ErrorCorrectionLevel ecLevel, System.Collections.Hashtable hints, QRCode qrCode)
		{
			
			System.String encoding = hints == null?null:(System.String) hints[EncodeHintType.CHARACTER_SET];
			if (encoding == null)
			{
				encoding = DEFAULT_BYTE_MODE_ENCODING;
			}
			
			// Step 1: Choose the mode (encoding).
			Mode mode = chooseMode(content, encoding);
			
			// Step 2: Append "bytes" into "dataBits" in appropriate encoding.
			BitVector dataBits = new BitVector();
			appendBytes(content, mode, dataBits, encoding);
			// Step 3: Initialize QR code that can contain "dataBits".
			int numInputBytes = dataBits.sizeInBytes();
			initQRCode(numInputBytes, ecLevel, mode, qrCode);
			
			// Step 4: Build another bit vector that contains header and data.
			BitVector headerAndDataBits = new BitVector();
			
			// Step 4.5: Append ECI message if applicable
			if (mode == Mode.BYTE && !DEFAULT_BYTE_MODE_ENCODING.Equals(encoding))
			{
				CharacterSetECI eci = CharacterSetECI.getCharacterSetECIByName(encoding);
				if (eci != null)
				{
					appendECI(eci, headerAndDataBits);
				}
			}
			
			appendModeInfo(mode, headerAndDataBits);
			
			int numLetters = mode.Equals(Mode.BYTE)?dataBits.sizeInBytes():content.Length;
			appendLengthInfo(numLetters, qrCode.Version, mode, headerAndDataBits);
			headerAndDataBits.appendBitVector(dataBits);
			
			// Step 5: Terminate the bits properly.
			terminateBits(qrCode.NumDataBytes, headerAndDataBits);
			
			// Step 6: Interleave data bits with error correction code.
			BitVector finalBits = new BitVector();
			interleaveWithECBytes(headerAndDataBits, qrCode.NumTotalBytes, qrCode.NumDataBytes, qrCode.NumRSBlocks, finalBits);
			
			// Step 7: Choose the mask pattern and set to "qrCode".
			ByteMatrix matrix = new ByteMatrix(qrCode.MatrixWidth, qrCode.MatrixWidth);
			qrCode.MaskPattern = chooseMaskPattern(finalBits, qrCode.ECLevel, qrCode.Version, matrix);
			
			// Step 8.  Build the matrix and set it to "qrCode".
			MatrixUtil.buildMatrix(finalBits, qrCode.ECLevel, qrCode.Version, qrCode.MaskPattern, matrix);
			qrCode.Matrix = matrix;
			// Step 9.  Make sure we have a valid QR Code.
			if (!qrCode.Valid)
			{
				throw new WriterException("Invalid QR code: " + qrCode.ToString());
			}
		}
Ejemplo n.º 3
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        // Make bit vector of type information. On success, store the result in "bits" and return true.
        // Encode error correction level and mask pattern. See 8.9 of
        // JISX0510:2004 (p.45) for details.
        public static void makeTypeInfoBits(ErrorCorrectionLevel ecLevel, int maskPattern, BitVector bits)
        {
            if (!QRCode.isValidMaskPattern(maskPattern))
            {
                throw new WriterException("Invalid mask pattern");
            }
            int typeInfo = (ecLevel.getBits() << 3) | maskPattern;

            bits.appendBits(typeInfo, 5);

            int bchCode = calculateBCHCode(typeInfo, TYPE_INFO_POLY);

            bits.appendBits(bchCode, 10);

            BitVector maskBits = new BitVector();

            maskBits.appendBits(TYPE_INFO_MASK_PATTERN, 15);
            bits.xor(maskBits);

            if (bits.size() != 15)    // Just in case.
            {
                throw new WriterException("should not happen but we got: " + bits.size());
            }
        }
Ejemplo n.º 4
0
		/// <summary>  Encode "bytes" with the error correction level "ecLevel". The encoding mode will be chosen
		/// internally by chooseMode(). On success, store the result in "qrCode".
		/// 
		/// We recommend you to use QRCode.EC_LEVEL_L (the lowest level) for
		/// "getECLevel" since our primary use is to show QR code on desktop screens. We don't need very
		/// strong error correction for this purpose.
		/// 
		/// Note that there is no way to encode bytes in MODE_KANJI. We might want to add EncodeWithMode()
		/// with which clients can specify the encoding mode. For now, we don't need the functionality.
		/// </summary>
		public static void  encode(System.String content, ErrorCorrectionLevel ecLevel, QRCode qrCode)
		{
			encode(content, ecLevel, null, qrCode);
		}
Ejemplo n.º 5
0
		/// <summary> Initialize "qrCode" according to "numInputBytes", "ecLevel", and "mode". On success,
		/// modify "qrCode".
		/// </summary>
		private static void  initQRCode(int numInputBytes, ErrorCorrectionLevel ecLevel, Mode mode, QRCode qrCode)
		{
			qrCode.ECLevel = ecLevel;
			qrCode.Mode = mode;
			
			// In the following comments, we use numbers of Version 7-H.
			for (int versionNum = 1; versionNum <= 40; versionNum++)
			{
				Version version = Version.getVersionForNumber(versionNum);
				// numBytes = 196
				int numBytes = version.TotalCodewords;
				// getNumECBytes = 130
				Version.ECBlocks ecBlocks = version.getECBlocksForLevel(ecLevel);
				int numEcBytes = ecBlocks.TotalECCodewords;
				// getNumRSBlocks = 5
				int numRSBlocks = ecBlocks.NumBlocks;
				// getNumDataBytes = 196 - 130 = 66
				int numDataBytes = numBytes - numEcBytes;
				// We want to choose the smallest version which can contain data of "numInputBytes" + some
				// extra bits for the header (mode info and length info). The header can be three bytes
				// (precisely 4 + 16 bits) at most. Hence we do +3 here.
				if (numDataBytes >= numInputBytes + 3)
				{
					// Yay, we found the proper rs block info!
					qrCode.Version = versionNum;
					qrCode.NumTotalBytes = numBytes;
					qrCode.NumDataBytes = numDataBytes;
					qrCode.NumRSBlocks = numRSBlocks;
					// getNumECBytes = 196 - 66 = 130
					qrCode.NumECBytes = numEcBytes;
					// matrix width = 21 + 6 * 4 = 45
					qrCode.MatrixWidth = version.DimensionForVersion;
					return ;
				}
			}
			throw new WriterException("Cannot find proper rs block info (input data too big?)");
		}
Ejemplo n.º 6
0
        // Note that the input matrix uses 0 == white, 1 == black, while the output matrix uses
        // 0 == black, 255 == white (i.e. an 8 bit greyscale bitmap).
        private static ByteMatrix renderResult(QRCode code, int width, int height)
        {
            ByteMatrix input = code.getMatrix();
            int inputWidth = input.width();
            int inputHeight = input.height();
            int qrWidth = inputWidth + (QUIET_ZONE_SIZE << 1);
            int qrHeight = inputHeight + (QUIET_ZONE_SIZE << 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 accomodate 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;

            ByteMatrix output = new ByteMatrix(outputHeight, outputWidth);
            sbyte[][] outputArray = output.getArray();

            // We could be tricky and use the first row in each set of multiple as the temporary storage,
            // instead of allocating this separate array.
            sbyte[] row = new sbyte[outputWidth];

            // 1. Write the white lines at the top
            for (int y = 0; y < topPadding; y++) {
              setRowColor(outputArray[y], unchecked((sbyte)255));
            }

            // 2. Expand the QR image to the multiple
            sbyte[][] inputArray = input.getArray();
            for (int y = 0; y < inputHeight; y++) {
              // a. Write the white pixels at the left of each row
              for (int x = 0; x < leftPadding; x++) {
                row[x] = unchecked((sbyte) 255);
              }

              // b. Write the contents of this row of the barcode
              int offset = leftPadding;
              for (int x = 0; x < inputWidth; x++) {
                sbyte value = (inputArray[y][x] == 1) ? (sbyte) 0 : unchecked((sbyte) 255);
                for (int z = 0; z < multiple; z++) {
                  row[offset + z] = value;
                }
                offset += multiple;
              }

              // c. Write the white pixels at the right of each row
              offset = leftPadding + (inputWidth * multiple);
              for (int x = offset; x < outputWidth; x++) {
                row[x] = unchecked((sbyte) 255);
              }

              // d. Write the completed row multiple times
              offset = topPadding + (y * multiple);
              for (int z = 0; z < multiple; z++) {
                System.Array.Copy(row, 0, outputArray[offset + z], 0, outputWidth);
              }
            }

            // 3. Write the white lines at the bottom
            int offset2 = topPadding + (inputHeight * multiple);
            for (int y = offset2; y < outputHeight; y++)
            {
              setRowColor(outputArray[y], unchecked((sbyte) 255));
            }
            return output;
        }
Ejemplo n.º 7
0
        public static void  encode(System.String content, ErrorCorrectionLevel ecLevel, System.Collections.Hashtable hints, QRCode qrCode)
        {
            System.String encoding = hints == null?null:(System.String)hints[EncodeHintType.CHARACTER_SET];
            if (encoding == null)
            {
                encoding = DEFAULT_BYTE_MODE_ENCODING;
            }

            // Step 1: Choose the mode (encoding).
            Mode mode = chooseMode(content, encoding);

            // Step 2: Append "bytes" into "dataBits" in appropriate encoding.
            BitVector dataBits = new BitVector();

            appendBytes(content, mode, dataBits, encoding);
            // Step 3: Initialize QR code that can contain "dataBits".
            int numInputBytes = dataBits.sizeInBytes();

            initQRCode(numInputBytes, ecLevel, mode, qrCode);

            // Step 4: Build another bit vector that contains header and data.
            BitVector headerAndDataBits = new BitVector();

            // Step 4.5: Append ECI message if applicable
            if (mode == Mode.BYTE && !DEFAULT_BYTE_MODE_ENCODING.Equals(encoding))
            {
                CharacterSetECI eci = CharacterSetECI.getCharacterSetECIByName(encoding);
                if (eci != null)
                {
                    appendECI(eci, headerAndDataBits);
                }
            }

            appendModeInfo(mode, headerAndDataBits);

            int numLetters = mode.Equals(Mode.BYTE)?dataBits.sizeInBytes():content.Length;

            appendLengthInfo(numLetters, qrCode.Version, mode, headerAndDataBits);
            headerAndDataBits.appendBitVector(dataBits);

            // Step 5: Terminate the bits properly.
            terminateBits(qrCode.NumDataBytes, headerAndDataBits);

            // Step 6: Interleave data bits with error correction code.
            BitVector finalBits = new BitVector();

            interleaveWithECBytes(headerAndDataBits, qrCode.NumTotalBytes, qrCode.NumDataBytes, qrCode.NumRSBlocks, finalBits);

            // Step 7: Choose the mask pattern and set to "qrCode".
            ByteMatrix matrix = new ByteMatrix(qrCode.MatrixWidth, qrCode.MatrixWidth);

            qrCode.MaskPattern = chooseMaskPattern(finalBits, qrCode.ECLevel, qrCode.Version, matrix);

            // Step 8.  Build the matrix and set it to "qrCode".
            MatrixUtil.buildMatrix(finalBits, qrCode.ECLevel, qrCode.Version, qrCode.MaskPattern, matrix);
            qrCode.Matrix = matrix;
            // Step 9.  Make sure we have a valid QR Code.
            if (!qrCode.Valid)
            {
                throw new WriterException("Invalid QR code: " + qrCode.ToString());
            }
        }
Ejemplo n.º 8
0
 /// <summary>  Encode "bytes" with the error correction level "ecLevel". The encoding mode will be chosen
 /// internally by chooseMode(). On success, store the result in "qrCode".
 ///
 /// We recommend you to use QRCode.EC_LEVEL_L (the lowest level) for
 /// "getECLevel" since our primary use is to show QR code on desktop screens. We don't need very
 /// strong error correction for this purpose.
 ///
 /// Note that there is no way to encode bytes in MODE_KANJI. We might want to add EncodeWithMode()
 /// with which clients can specify the encoding mode. For now, we don't need the functionality.
 /// </summary>
 public static void  encode(System.String content, ErrorCorrectionLevel ecLevel, QRCode qrCode)
 {
     encode(content, ecLevel, null, qrCode);
 }
Ejemplo n.º 9
0
        /// <summary> Initialize "qrCode" according to "numInputBytes", "ecLevel", and "mode". On success,
        /// modify "qrCode".
        /// </summary>
        private static void  initQRCode(int numInputBytes, ErrorCorrectionLevel ecLevel, Mode mode, QRCode qrCode)
        {
            qrCode.ECLevel = ecLevel;
            qrCode.Mode    = mode;

            // In the following comments, we use numbers of Version 7-H.
            for (int versionNum = 1; versionNum <= 40; versionNum++)
            {
                Version version = Version.getVersionForNumber(versionNum);
                // numBytes = 196
                int numBytes = version.TotalCodewords;
                // getNumECBytes = 130
                Version.ECBlocks ecBlocks = version.getECBlocksForLevel(ecLevel);
                int numEcBytes            = ecBlocks.TotalECCodewords;
                // getNumRSBlocks = 5
                int numRSBlocks = ecBlocks.NumBlocks;
                // getNumDataBytes = 196 - 130 = 66
                int numDataBytes = numBytes - numEcBytes;
                // We want to choose the smallest version which can contain data of "numInputBytes" + some
                // extra bits for the header (mode info and length info). The header can be three bytes
                // (precisely 4 + 16 bits) at most. Hence we do +3 here.
                if (numDataBytes >= numInputBytes + 3)
                {
                    // Yay, we found the proper rs block info!
                    qrCode.Version       = versionNum;
                    qrCode.NumTotalBytes = numBytes;
                    qrCode.NumDataBytes  = numDataBytes;
                    qrCode.NumRSBlocks   = numRSBlocks;
                    // getNumECBytes = 196 - 66 = 130
                    qrCode.NumECBytes = numEcBytes;
                    // matrix width = 21 + 6 * 4 = 45
                    qrCode.MatrixWidth = version.DimensionForVersion;
                    return;
                }
            }
            throw new WriterException("Cannot find proper rs block info (input data too big?)");
        }
Ejemplo n.º 10
0
        // Encode "bytes" with the error correction level "getECLevel". The encoding mode will be chosen
        // internally by chooseMode(). On success, store the result in "qrCode" and return true.
        // We recommend you to use QRCode.EC_LEVEL_L (the lowest level) for
        // "getECLevel" since our primary use is to show QR code on desktop screens. We don't need very
        // strong error correction for this purpose.
        //
        // Note that there is no way to encode bytes in MODE_KANJI. We might want to add EncodeWithMode()
        // with which clients can specify the encoding mode. For now, we don't need the functionality.
        public static void encode(String content, ErrorCorrectionLevel ecLevel, QRCode qrCode)
        {
            // Step 1: Choose the mode (encoding).
            Mode mode = chooseMode(content);

            // Step 2: Append "bytes" into "dataBits" in appropriate encoding.
            BitVector dataBits = new BitVector();
            appendBytes(content, mode, dataBits);
            // Step 3: Initialize QR code that can contain "dataBits".
            int numInputBytes = dataBits.sizeInBytes();
            initQRCode(numInputBytes, ecLevel, mode, qrCode);

            // Step 4: Build another bit vector that contains header and data.
            BitVector headerAndDataBits = new BitVector();
            appendModeInfo(qrCode.getMode(), headerAndDataBits);
            appendLengthInfo(content.Length, qrCode.getVersion(), qrCode.getMode(), headerAndDataBits);
            headerAndDataBits.appendBitVector(dataBits);

            // Step 5: Terminate the bits properly.
            terminateBits(qrCode.getNumDataBytes(), headerAndDataBits);

            // Step 6: Interleave data bits with error correction code.
            BitVector finalBits = new BitVector();
            interleaveWithECBytes(headerAndDataBits, qrCode.getNumTotalBytes(), qrCode.getNumDataBytes(),
                qrCode.getNumRSBlocks(), finalBits);

            // Step 7: Choose the mask pattern and set to "qrCode".
            ByteMatrix matrix = new ByteMatrix(qrCode.getMatrixWidth(), qrCode.getMatrixWidth());
            qrCode.setMaskPattern(chooseMaskPattern(finalBits, qrCode.getECLevel(), qrCode.getVersion(),
                matrix));

            // Step 8.  Build the matrix and set it to "qrCode".
            MatrixUtil.buildMatrix(finalBits, qrCode.getECLevel(), qrCode.getVersion(),
                qrCode.getMaskPattern(), matrix);
            qrCode.setMatrix(matrix);
            // Step 9.  Make sure we have a valid QR Code.
            if (!qrCode.isValid()) {
              throw new WriterException("Invalid QR code: " + qrCode.toString());
            }
        }
Ejemplo n.º 11
0
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: public static QRCode encode(String content, com.google.zxing.qrcode.decoder.ErrorCorrectionLevel ecLevel, java.util.Map<com.google.zxing.EncodeHintType,?> hints) throws com.google.zxing.WriterException
        public static QRCode encode(string content, ErrorCorrectionLevel ecLevel, IDictionary <EncodeHintType, object> hints)
        {
            // Determine what character encoding has been specified by the caller, if any
            //string encoding = hints == null ? null : (string) hints[EncodeHintType.CHARACTER_SET];
            string encoding = null;

            if (hints != null && hints.ContainsKey(EncodeHintType.CHARACTER_SET))
            {
                encoding = (string)hints[EncodeHintType.CHARACTER_SET];
            }

            if (encoding == null)
            {
                encoding = DEFAULT_BYTE_MODE_ENCODING;
            }

            // Pick an encoding mode appropriate for the content. Note that this will not attempt to use
            // multiple modes / segments even if that were more efficient. Twould be nice.
            Mode mode = chooseMode(content, encoding);

            // This will store the header information, like mode and
            // length, as well as "header" segments like an ECI segment.
            BitArray headerBits = new BitArray();

            // Append ECI segment if applicable
            if (mode == Mode.BYTE && !DEFAULT_BYTE_MODE_ENCODING.Equals(encoding))
            {
                CharacterSetECI eci = CharacterSetECI.getCharacterSetECIByName(encoding);
                if (eci != null)
                {
                    appendECI(eci, headerBits);
                }
            }

            // (With ECI in place,) Write the mode marker
            appendModeInfo(mode, headerBits);

            // Collect data within the main segment, separately, to count its size if needed. Don't add it to
            // main payload yet.
            BitArray dataBits = new BitArray();

            appendBytes(content, mode, dataBits, encoding);

            // Hard part: need to know version to know how many bits length takes. But need to know how many
            // bits it takes to know version. First we take a guess at version by assuming version will be
            // the minimum, 1:

            int     provisionalBitsNeeded = headerBits.Size + mode.getCharacterCountBits(Version.getVersionForNumber(1)) + dataBits.Size;
            Version provisionalVersion    = chooseVersion(provisionalBitsNeeded, ecLevel);

            // Use that guess to calculate the right version. I am still not sure this works in 100% of cases.

            int     bitsNeeded = headerBits.Size + mode.getCharacterCountBits(provisionalVersion) + dataBits.Size;
            Version version    = chooseVersion(bitsNeeded, ecLevel);

            BitArray headerAndDataBits = new BitArray();

            headerAndDataBits.appendBitArray(headerBits);
            // Find "length" of main segment and write it
            int numLetters = mode == Mode.BYTE ? dataBits.SizeInBytes : content.Length;

            appendLengthInfo(numLetters, version, mode, headerAndDataBits);
            // Put data together into the overall payload
            headerAndDataBits.appendBitArray(dataBits);

            Version.ECBlocks ecBlocks = version.getECBlocksForLevel(ecLevel);
            int numDataBytes          = version.TotalCodewords - ecBlocks.TotalECCodewords;

            // Terminate the bits properly.
            terminateBits(numDataBytes, headerAndDataBits);

            // Interleave data bits with error correction code.
            BitArray finalBits = interleaveWithECBytes(headerAndDataBits, version.TotalCodewords, numDataBytes, ecBlocks.NumBlocks);

            QRCode qrCode = new QRCode();

            qrCode.ECLevel = ecLevel;
            qrCode.Mode    = mode;
            qrCode.Version = version;

            //  Choose the mask pattern and set to "qrCode".
            int        dimension   = version.DimensionForVersion;
            ByteMatrix matrix      = new ByteMatrix(dimension, dimension);
            int        maskPattern = chooseMaskPattern(finalBits, ecLevel, version, matrix);

            qrCode.MaskPattern = maskPattern;

            // Build the matrix and set it to "qrCode".
            MatrixUtil.buildMatrix(finalBits, ecLevel, version, maskPattern, matrix);
            qrCode.Matrix = matrix;

            return(qrCode);
        }