コード例 #1
0
ファイル: QRCodeWriter.cs プロジェクト: zwyl2001/FastReport
        // 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, bool quietZone)
        {
            unchecked
            {
                ByteMatrix input        = code.Matrix;
                int        inputWidth   = input.Width;
                int        inputHeight  = input.Height;
                int        qrWidth      = inputWidth + (quietZone ? QUIET_ZONE_SIZE << 1 : 0);
                int        qrHeight     = inputHeight + (quietZone ? QUIET_ZONE_SIZE << 1 : 0);
                int        outputWidth  = System.Math.Max(width, qrWidth);
                int        outputHeight = System.Math.Max(height, qrHeight);

                int multiple = System.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;

                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++)
                    {
                        // Redivivus.in Java to c# Porting update - Type cased sbyte
                        // 30/01/2010
                        // sbyte value_Renamed = (inputArray[y][x] == 1)?0:(sbyte) SupportClass.Identity(255);
                        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);
            }
        }
コード例 #2
0
ファイル: Encoder.cs プロジェクト: zwyl2001/FastReport
 /*/// <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);
 }
コード例 #3
0
ファイル: Encoder.cs プロジェクト: zwyl2001/FastReport
        public static void encode(System.String content, ErrorCorrectionLevel ecLevel, System.String encoding, QRCode qrCode)
        {
            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();

            // tz - commented out to match zxing encoder online
            // 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());
            }
        }
コード例 #4
0
ファイル: Encoder.cs プロジェクト: zwyl2001/FastReport
        /*/// <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?)");
        }