[HttpGet("{type}/{code}/{width}/{height}/{scale}")] //Get /api/design/barcode/BarCode128/123456/200/100/1
public async Task Barcode(string type, string code, int width, int height, float scale)
{
//设置当前用户会话
RuntimeContext.Current.CurrentSession = HttpContext.Session.LoadWebSession();
//判断权限
if (!(RuntimeContext.Current.CurrentSession is IDeveloperSession))
{
throw new Exception("Must login as a Developer");
}
var bw = new ZXing.SkiaSharp.BarcodeWriter(); //TODO:优化单例ZXing.BarCodeRender
bw.Format = (ZXing.BarcodeFormat)Enum.Parse(typeof(ZXing.BarcodeFormat), type);
bw.Options.Height = (int)(height * scale);
bw.Options.Width = (int)(width * scale);
var skbmp = bw.Write(code);
using var bmp = new Drawing.Bitmap(skbmp);
using var ms = new System.IO.MemoryStream(1024);
bmp.Save(ms, Drawing.ImageFormat.Jpeg, 90);
ms.Position = 0;
HttpContext.Response.ContentType = "image/jpg";
await ms.CopyToAsync(HttpContext.Response.Body);
//bmp.Save(HttpContext.Response.Body, Drawing.ImageFormat.Png); //不支持同步直接写
}
public byte[] Generate(string content, BarcodeType type, int?width, int?height, int?margin)
{
ZXing.BarcodeFormat barcodeFormat;
switch (type)
{
case BarcodeType.AZTEC:
barcodeFormat = ZXing.BarcodeFormat.AZTEC;
break;
case BarcodeType.CODABAR:
barcodeFormat = ZXing.BarcodeFormat.CODABAR;
break;
case BarcodeType.CODE_39:
barcodeFormat = ZXing.BarcodeFormat.CODE_39;
break;
case BarcodeType.CODE_93:
barcodeFormat = ZXing.BarcodeFormat.CODE_93;
break;
case BarcodeType.CODE_128:
barcodeFormat = ZXing.BarcodeFormat.CODE_128;
break;
case BarcodeType.DATA_MATRIX:
barcodeFormat = ZXing.BarcodeFormat.DATA_MATRIX;
break;
case BarcodeType.EAN_8:
barcodeFormat = ZXing.BarcodeFormat.EAN_8;
break;
case BarcodeType.EAN_13:
barcodeFormat = ZXing.BarcodeFormat.EAN_13;
break;
case BarcodeType.ITF:
barcodeFormat = ZXing.BarcodeFormat.ITF;
break;
case BarcodeType.MAXICODE:
barcodeFormat = ZXing.BarcodeFormat.MAXICODE;
break;
case BarcodeType.PDF_417:
barcodeFormat = ZXing.BarcodeFormat.PDF_417;
break;
case BarcodeType.QR_CODE:
barcodeFormat = ZXing.BarcodeFormat.QR_CODE;
break;
case BarcodeType.RSS_14:
barcodeFormat = ZXing.BarcodeFormat.RSS_14;
break;
case BarcodeType.RSS_EXPANDED:
barcodeFormat = ZXing.BarcodeFormat.RSS_EXPANDED;
break;
case BarcodeType.UPC_A:
barcodeFormat = ZXing.BarcodeFormat.UPC_A;
break;
case BarcodeType.UPC_E:
barcodeFormat = ZXing.BarcodeFormat.UPC_E;
break;
case BarcodeType.UPC_EAN_EXTENSION:
barcodeFormat = ZXing.BarcodeFormat.UPC_EAN_EXTENSION;
break;
case BarcodeType.MSI:
barcodeFormat = ZXing.BarcodeFormat.MSI;
break;
case BarcodeType.PLESSEY:
barcodeFormat = ZXing.BarcodeFormat.PLESSEY;
break;
case BarcodeType.IMB:
barcodeFormat = ZXing.BarcodeFormat.IMB;
break;
default:
throw new ArgumentException();
}
var barcodeWriter = new ZXing.SkiaSharp.BarcodeWriter
{
Format = barcodeFormat,
};
if (width.HasValue || height.HasValue || margin.HasValue)
{
barcodeWriter.Options = new EncodingOptions();
if (width.HasValue)
{
barcodeWriter.Options.Width = width.Value;
}
if (height.HasValue)
{
barcodeWriter.Options.Height = height.Value;
}
if (margin.HasValue)
{
barcodeWriter.Options.Margin = margin.Value;
}
}
using (var image = barcodeWriter.Write(content))
{
using (var memStream = new MemoryStream())
{
using (var wstream = new SKManagedWStream(memStream))
{
if (image.Encode(wstream, SKEncodedImageFormat.Png, 100))
{
return(memStream.ToArray());
}
return(null);
}
}
}
}
