/// <summary> /// 生成二维码 /// </summary> /// <param name="content">内容</param> /// <param name="qRCodeScale">大小</param> /// <param name="qRCodeVersion">版本</param> /// <param name="qRCodeErrorCorrect">容错</param> /// <param name="logoFile">logo文件</param> /// <param name="logoSize">logo大小</param> /// <returns></returns> public (string error, Bitmap qrcodeBitbmp) CreateQRCode(string content, int qRCodeScale, int qRCodeVersion, ZXing.QrCode.Internal.ErrorCorrectionLevel qRCodeErrorCorrect, string logoFile, int logoSize) { int? ver = null; if (qRCodeVersion > 0) ver = qRCodeVersion; BarcodeWriter writer = new BarcodeWriter(); writer.Format = BarcodeFormat.QR_CODE; writer.Options = new ZXing.QrCode.QrCodeEncodingOptions() { DisableECI = true, CharacterSet = "UTF-8", Width = qRCodeScale, Height = qRCodeScale, ErrorCorrection = qRCodeErrorCorrect, QrVersion = ver, Margin = 0 }; try { Bitmap qrcode = writer.Write(content); if (!string.IsNullOrEmpty(logoFile)) { Graphics g = Graphics.FromImage(qrcode); Bitmap bitmapLogo = new Bitmap(logoFile); bitmapLogo = new Bitmap(bitmapLogo, new System.Drawing.Size(logoSize, logoSize)); PointF point = new PointF(qrcode.Width / 2 - logoSize / 2, qrcode.Height / 2 - logoSize / 2); g.DrawImage(bitmapLogo, point); } return (null, qrcode); } catch (Exception ex) { return (ex.Message, null); } }
private void comboBox_ErrorCorrect_SelectedIndexChanged(object sender, EventArgs e) { QrCodeEncodingOptions qceo = (QrCodeEncodingOptions)qrCodeWriter.Options; qceo.ErrorCorrection = ErrorCorrectionLevel.forBits(comboBox_ErrorCorrect.SelectedIndex); refreshQrCode(); }
private void comboBox_ErrorCorrect_SelectedIndexChanged(object sender, EventArgs e) { QrCodeEncodingOptions qceo = (QrCodeEncodingOptions)qrCodeWriter.Options; qceo.ErrorCorrection = ErrorCorrectionLevel.forBits(comboBox_ErrorCorrect.SelectedIndex); qrCodeEncoder.QRCodeErrorCorrect = (ThoughtWorks.QRCode.Codec.QRCodeEncoder.ERROR_CORRECTION)qceo.ErrorCorrection.Bits; refreshQrCode(); }
//private ByteMatrix matrix; public MicroQRCode() { mode = null; ecLevel = null; version = -1; matrixWidth = -1; maskPattern = -1; numTotalBytes = -1; numDataBytes = -1; numECBytes = -1; numRSBlocks = -1; Matrix = null; }
private static int chooseMaskPattern(BitVector bits, ErrorCorrectionLevel ecLevel, int version, ByteMatrix matrix) { int maxPenalty = System.Int32.MinValue; // highest penalty is better. int bestMaskPattern = -1; // We try all mask patterns to choose the best one. for (int maskPattern = 0; maskPattern < MicroQRCode.NUM_MASK_PATTERNS; maskPattern++) { MatrixUtil.buildMatrix(bits, ecLevel, version, maskPattern, matrix); int penalty = calculateMaskPenalty(matrix); if (penalty > maxPenalty) { maxPenalty = penalty; bestMaskPattern = maskPattern; } } return(bestMaskPattern); }
public static string QrImg(string content, string qrcodeImgPath, string corrLevel, int wh, string color, string bgcolor) { ZXing.QrCode.Internal.ErrorCorrectionLevel corrLevel2 = ZXing.QrCode.Internal.ErrorCorrectionLevel.L; if (corrLevel != null) { string text = corrLevel.ToLower(); if (text != null) { if (text == "l") { corrLevel2 = ZXing.QrCode.Internal.ErrorCorrectionLevel.L; goto IL_80; } if (text == "m") { corrLevel2 = ZXing.QrCode.Internal.ErrorCorrectionLevel.M; goto IL_80; } if (text == "q") { corrLevel2 = ZXing.QrCode.Internal.ErrorCorrectionLevel.Q; goto IL_80; } if (text == "h") { corrLevel2 = ZXing.QrCode.Internal.ErrorCorrectionLevel.H; goto IL_80; } } corrLevel2 = ZXing.QrCode.Internal.ErrorCorrectionLevel.L; IL_80 :; } BitMatrix matrix = new QRCodeWriter().encode(content, BarcodeFormat.QR_CODE, wh, wh, null); Image image = Create.toBitmap(matrix, color, bgcolor); image.Save(qrcodeImgPath, ImageFormat.Png); image.Dispose(); return(qrcodeImgPath); }
/// <summary> Initialize "qrCode" according to "numInputBytes", "ecLevel", and "mode". On success, /// modify "qrCode". /// </summary> private static void initQRCode(int numInputBytes, ErrorCorrectionLevel ecLevel, Mode mode, MicroQRCode qrCode, int versionNum) { qrCode.ECLevel = ecLevel; qrCode.Mode = mode; // In the following comments, we use numbers of Version 7-H. 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) { // 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?)"); }
/// <summary> /// /// </summary> /// <param name="content"></param> /// <param name="ecLevel"></param> /// <param name="hints"></param> /// <param name="qrCode"></param> public static void encode(System.String content, ErrorCorrectionLevel ecLevel, IDictionary <EncodeHintType, object> hints, MicroQRCode qrCode, int versionNum) { if (versionNum < 1 || versionNum > 4) { throw new ArgumentOutOfRangeException("versionNum", "versionNum [1, 4]"); } System.String encoding = null; if (hints.ContainsKey(EncodeHintType.CHARACTER_SET)) { 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, versionNum); // Step 3: Initialize QR code that can contain "dataBits". int numInputBytes = dataBits.sizeInBytes(); initQRCode(numInputBytes, ecLevel, mode, qrCode, versionNum); // Step 4: Build another bit vector that contains header and data. BitVector headerAndDataBits = new BitVector(); //INFO ECB+Mode+Length+Data[+terminate] // Step 4.5: Append ECI message if applicable appendModeInfo(mode, headerAndDataBits, versionNum); 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, versionNum); // Step 6: Interleave data bits with error correction code. BitVector finalBits = new BitVector(); interleaveWithECBytes(headerAndDataBits, versionNum, 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; //var decoder = new com.google.zxing.microqrcode.decoder.Decoder(); //var res = decoder.decode(com.google.zxing.common.BitMatrix.FromByteMatrix(matrix)); //Console.WriteLine(res.Text); // Step 9. Make sure we have a valid QR Code. if (!qrCode.Valid) { throw new WriterException("Invalid QR code: " + qrCode.ToString()); } }
/// <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, MicroQRCode qrCode, int versionNum) { encode(content, ecLevel, null, qrCode, versionNum); }
private Tuple <ZXing.QrCode.Internal.ErrorCorrectionLevel, string> getSelectedOptions() { ZXing.QrCode.Internal.ErrorCorrectionLevel ecl = ZXing.QrCode.Internal.ErrorCorrectionLevel.L; if (cbErrorCorrectionLevel.SelectedValue is ComboBoxItem cbi1) { switch (cbi1.Tag.ToString()) { case "L": ecl = ZXing.QrCode.Internal.ErrorCorrectionLevel.L; break; case "M": ecl = ZXing.QrCode.Internal.ErrorCorrectionLevel.M; break; case "Q": ecl = ZXing.QrCode.Internal.ErrorCorrectionLevel.Q; break; case "H": ecl = ZXing.QrCode.Internal.ErrorCorrectionLevel.H; break; } } string characterSet = "UTF-8"; if (cbCharacterSet.SelectedValue is ComboBoxItem cbi2) { string tempEncoding = cbi2.Content.ToString(); try { characterSet = ZXing.Common.CharacterSetECI.getCharacterSetECIByName(tempEncoding).EncodingName; #region 知识点 ZXing.Common.CharacterSetECI // ZXing.Common.CharacterSetECI.getCharacterSetECIByName() // 从网页 https://zxing.github.io/zxing/apidocs/com/google/zxing/common/CharacterSetECI.html#UnicodeBigUnmarked // 了解到 zxing 只支持 //ASCII //Big5 //Cp1250 //Cp1251 //Cp1252 //Cp1256 //Cp437 //EUC_KR //GB18030 //ISO8859_1 //ISO8859_10 //ISO8859_11 //ISO8859_13 //ISO8859_14 //ISO8859_15 //ISO8859_16 //ISO8859_2 //ISO8859_3 //ISO8859_4 //ISO8859_5 //ISO8859_6 //ISO8859_7 //ISO8859_8 //ISO8859_9 //SJIS //UnicodeBigUnmarked //UTF8 #endregion } catch (Exception ex) { MessageBox.Show($"{ex.Message}\r\n编码{tempEncoding}不存在", "捕获异常"); } } return(new Tuple <ZXing.QrCode.Internal.ErrorCorrectionLevel, string>(ecl, characterSet)); }