Excel催化剂开源第26波-Excel离线生成二维码条形码

        private static Image GetImageBarCodeFromRangeValue(string srcRangeValue)
        {
            //设置条形码规格  
            EncodingOptions encodeOption = new EncodingOptions();
            //设置宽和高  
            encodeOption.Height = int.Parse(Properties.Settings.Default.BarCodeHeight);
            encodeOption.Width = int.Parse(Properties.Settings.Default.BarCodeWidth);
            encodeOption.PureBarcode = !Properties.Settings.Default.BarCodeIsnotPureCode;
            BarcodeWriter wr = new BarcodeWriter();
            wr.Options = encodeOption;
            //条形码：根据自己的需要选择条形码格式  
            wr.Format = (BarcodeFormat)Enum.Parse(typeof(BarcodeFormat), Properties.Settings.Default.BarcodeFormat);
            //生成条形码  
            return wr.Write(srcRangeValue.Trim());

        }

 private static Image GetImageQrCodeFromRangeValueWithoutLogo(string srcRangeValue)
        {
            //初始化  
            BarcodeWriter writer = new BarcodeWriter();
            writer.Format = BarcodeFormat.QR_CODE;
            QrCodeEncodingOptions options = new QrCodeEncodingOptions();
            //禁用ECI  
            options.DisableECI = true;
            //内容编码格式  
            options.CharacterSet = "UTF-8";
            //二维码的宽高  
            int qrSize = int.Parse(Properties.Settings.Default.QrCodeSize);
            options.Width = qrSize;
            options.Height = qrSize;
            //二维码边距  
            options.Margin = int.Parse(Properties.Settings.Default.QrCodeMargin);
            writer.Options = options;
            //导出图片  
            return writer.Write(srcRangeValue);

        }


        private static Image GetImageQrCodeFromRangeValueWithLogo(string srcRangeValue)
        {
            string logoPath = Properties.Settings.Default.QrCodeLogoPath;
            Image logo = Image.FromFile(logoPath);
            //初始化  
            MultiFormatWriter writer = new MultiFormatWriter();

            Dictionary<EncodeHintType, object> hints = new Dictionary<EncodeHintType, object>();
            hints.Add(EncodeHintType.CHARACTER_SET, "UTF-8");
            hints.Add(EncodeHintType.ERROR_CORRECTION, GetErrorCorrectionLevel(Properties.Settings.Default.QrErrorCorrectionLevel));//(ErrorCorrectionLevel)Enum.Parse(typeof(ErrorCorrectionLevel), 
            hints.Add(EncodeHintType.MARGIN, int.Parse(Properties.Settings.Default.QrCodeMargin));
            //生成二维码   
            int qrSize = int.Parse(Properties.Settings.Default.QrCodeSize);
            BitMatrix bm = writer.encode(srcRangeValue, BarcodeFormat.QR_CODE, qrSize, qrSize, hints);
            BarcodeWriter barcodeWriter = new BarcodeWriter();
            Bitmap map = barcodeWriter.Write(bm);
            //计算尺寸  
            int[] rectangle = bm.getEnclosingRectangle();

            //计算插入Logo的大小位置  
            int middleW = Math.Min((int)(rectangle[2] / 3.5), logo.Width);
            int middleH = Math.Min((int)(rectangle[3] / 3.5), logo.Height);
            int middleL = (map.Width - middleW) / 2;
            int middleT = (map.Height - middleH) / 2;

            //将img转换成bmp格式，否则后面无法创建Graphics对象  
            Bitmap bmpimg = new Bitmap(map.Width, map.Height, PixelFormat.Format32bppArgb);
            using (Graphics g = Graphics.FromImage(bmpimg))
            {
                g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
                g.DrawImage(map, 0, 0);
            }
            //将二维码插入图片  
            Graphics myGraphic = Graphics.FromImage(bmpimg);
            //白底  
            myGraphic.FillRectangle(Brushes.White, middleL, middleT, middleW, middleH);
            myGraphic.DrawImage(logo, middleL, middleT, middleW, middleH);

            //保存成图片  
            return bmpimg;
        }