Esempio n. 1
0
		public ByteMatrix encode(System.String contents, BarcodeFormat format,  int width,  int height, System.Collections.Hashtable hints)
		{
			
			if (contents == null || contents.Length == 0)
			{
				throw new System.ArgumentException("Found empty contents");
			}
			
			if (format != BarcodeFormat.QR_CODE)
			{
				throw new System.ArgumentException("Can only encode QR_CODE, but got " + format);
			}
			
			if (width < 0 || height < 0)
			{
				throw new System.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, hints, code);
			return renderResult(code,  width,  height);
		}
Esempio n. 2
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		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());
			}
		}
Esempio n. 3
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		// 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.Matrix;
			int inputWidth = input.Width;
			int inputHeight = input.Height;
			int qrWidth = inputWidth + (QUIET_ZONE_SIZE << 1);
			int qrHeight = inputHeight + (QUIET_ZONE_SIZE << 1);
			int outputWidth = System.Math.Max(width, qrWidth);
			int outputHeight = System.Math.Max(height, qrHeight);
           
			int multiple = System.Math.Min(outputWidth / qrWidth, outputHeight / qrHeight);

            int leftPadding =0;// (outputWidth - (inputWidth * multiple)) / 2;
            int topPadding = 0;// (outputHeight - (inputHeight * multiple)) / 2;
			
			ByteMatrix output = new ByteMatrix(outputWidth, outputHeight);
			sbyte[][] outputArray = output.Array;
			
			// 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], (sbyte) SupportClass.Identity(255));
			}
			
			// 2. Expand the QR image to the multiple
			sbyte[][] inputArray = input.Array;
			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] = (sbyte) SupportClass.Identity(255);
				}
				
				// b. Write the contents of this row of the barcode
				int offset = leftPadding;
				for (int x = 0; x < inputWidth; x++)
				{
                    sbyte value_Renamed = (sbyte)((inputArray[y][x] == 1) ? 0 : SupportClass.Identity(255));
					for (int z = 0; z < multiple; z++)
					{
						row[offset + z] = value_Renamed;
					}
					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] = (sbyte) SupportClass.Identity(255);
				}
				
				// d. Write the completed row multiple times
				offset = topPadding + (y * multiple);
				for (int z = 0; z < multiple; z++)
				{
					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], (sbyte) SupportClass.Identity(255));
			}
			
			return output;
		}
Esempio n. 4
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		/// <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);
		}
Esempio n. 5
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		/// <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?)");
		}
Esempio n. 6
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        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());
            }
        }
Esempio n. 7
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 /// <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);
 }
Esempio n. 8
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        /// <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?)");
        }
Esempio n. 9
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        // 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.Matrix;
            int        inputWidth   = input.Width;
            int        inputHeight  = input.Height;
            int        qrWidth      = inputWidth + (QUIET_ZONE_SIZE << 1);
            int        qrHeight     = inputHeight + (QUIET_ZONE_SIZE << 1);
            int        outputWidth  = System.Math.Max(width, qrWidth);
            int        outputHeight = System.Math.Max(height, qrHeight);

            int multiple = System.Math.Min(outputWidth / qrWidth, outputHeight / qrHeight);

            int leftPadding = 0; // (outputWidth - (inputWidth * multiple)) / 2;
            int topPadding  = 0; // (outputHeight - (inputHeight * multiple)) / 2;

            ByteMatrix output = new ByteMatrix(outputWidth, outputHeight);

            sbyte[][] outputArray = output.Array;

            // 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], (sbyte)SupportClass.Identity(255));
            }

            // 2. Expand the QR image to the multiple
            sbyte[][] inputArray = input.Array;
            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] = (sbyte)SupportClass.Identity(255);
                }

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

                // d. Write the completed row multiple times
                offset = topPadding + (y * multiple);
                for (int z = 0; z < multiple; z++)
                {
                    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], (sbyte)SupportClass.Identity(255));
            }

            return(output);
        }