104 lines
3.3 KiB
C#
104 lines
3.3 KiB
C#
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using Microsoft.AspNetCore.Hosting.Server;
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using System;
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using System.IO;
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using ZXing;
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using ZXing.Common;
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using ZXing.QrCode;
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//using ZXing.ZKWeb.System.Drawing;
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namespace DOAN.Infrastructure.Helper;
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public class PrintHelper
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{
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/// <summary>
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/// 打印条形码
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/// </summary>
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/// <param name="message"></param>
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/// <param name="width"></param>
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/// <param name="height"></param>
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/// <returns></returns>
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//public static byte[] CreateBarCode(string message, int width, int height)
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//{
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// if (string.IsNullOrWhiteSpace(message))
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// {
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// return null;
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// }
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// var w = new ZXing.OneD.Code128Writer();
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// BitMatrix b = w.encode(message, BarcodeFormat.CODE_128, width, height);
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// var zzb = new ZXing.ZKWeb.BarcodeWriter();
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// zzb.Options = new EncodingOptions()
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// {
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// Margin = 0,
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// PureBarcode = false
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// };
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// Bitmap b2 = zzb.Write(b);
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// using (var ms = new System.IO.MemoryStream())
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// {
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// b2.Save(ms, ImageFormat.Png);
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// var bytes = ms.ToArray();
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// return bytes;
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// }
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//}
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/// <summary>
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/// 打印二维码
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/// https://ironsoftware.com/csharp/barcode/blog/compare-to-other-components/zxing-net-generate-qr-code-barcode-alternatives/
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/// </summary>
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/// <param name="message"></param>
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/// <param name="width"></param>
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/// <param name="height"></param>
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/// <returns></returns>
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public static byte[] CreateQcCode(string message, int width, int height)
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{
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if (string.IsNullOrWhiteSpace(message))
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{
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return null;
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}
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Byte[] byteArray;
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var margin = 0;
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var qrCodeWriter = new ZXing.BarcodeWriterPixelData
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{
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Format = ZXing.BarcodeFormat.QR_CODE,
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Options = new QrCodeEncodingOptions
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{
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Height = height,
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Width = width,
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Margin = margin
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}
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};
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var pixelData = qrCodeWriter.Write(message);
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// creating a PNG bitmap from the raw pixel data; if only black and white colors are used it makes no difference if the raw pixel data is BGRA oriented and the bitmap is initialized with RGB
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using (var bitmap = new System.Drawing.Bitmap(pixelData.Width, pixelData.Height, System.Drawing.Imaging.PixelFormat.Format32bppRgb))
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{
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using (var ms = new MemoryStream())
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{
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var bitmapData = bitmap.LockBits(new System.Drawing.Rectangle(0, 0, pixelData.Width, pixelData.Height), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppRgb);
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try
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{
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// we assume that the row stride of the bitmap is aligned to 4 byte multiplied by the width of the image
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System.Runtime.InteropServices.Marshal.Copy(pixelData.Pixels, 0, bitmapData.Scan0, pixelData.Pixels.Length);
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}
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finally
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{
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bitmap.UnlockBits(bitmapData);
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}
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bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
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byteArray = ms.ToArray();
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}
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}
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return byteArray;
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}
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} |