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refactor(Extensions): add ToBytes shortcut method

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This commit is contained in:
tekh 2025-09-25 12:47:03 +02:00
parent b0b734ecfb
commit 7964cc44fb
2 changed files with 11 additions and 52 deletions
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55
EnvelopeGenerator.PdfEditor/Extensions.cs
View File

@ -1,54 +1,17 @@
using iText.Kernel.Pdf; #if NETFRAMEWORK
using iText.Kernel.Pdf.Canvas;
#if NETFRAMEWORK
using System.IO; using System.IO;
using System;
#endif #endif
namespace EnvelopeGenerator.PdfEditor namespace EnvelopeGenerator.PdfEditor
#if NET
;
#elif NETFRAMEWORK
{ {
#endif
public static class Extensions public static class Extensions
{ {
#region Edit PDF document /// <summary>
public static TStream Edit<TStream>(this TStream inputStream, Action<PdfDocument> edit) /// Writes the stream contents to a byte array, regardless of the System.IO.MemoryStream.Position property.
where TStream : Stream, new() /// </summary>
{ /// <typeparam name="TPdf"></typeparam>
using (var outputStream = new TStream()) /// <param name="pdf"></param>
{ /// <returns>A new byte array</returns>
using (var pdfDoc = new PdfDocument(new PdfReader(inputStream), new PdfWriter(outputStream))) public static byte[] ToBytes<TPdf>(this TPdf pdf) where TPdf : Pdf<MemoryStream, MemoryStream> => pdf.OutputStream.ToArray();
{
edit(pdfDoc);
}
return outputStream;
}
}
public static byte[] Edit(this byte[] pdfBytes, Action<PdfDocument> edit)
{
using (var inputStream = new MemoryStream(pdfBytes))
{
return inputStream.Edit(edit).ToArray();
}
}
#endregion
public static byte[] Design(this byte[] pdfBytes, params (int pageIndex, Action<PdfCanvas> design)[] pageDesign)
=> pdfBytes.Edit(doc =>
{
foreach((int pageIndex, Action<PdfCanvas> design) in pageDesign)
{
var page = doc.GetPage(pageIndex);
var canvas = new PdfCanvas(page);
design(canvas);
}
});
} }
#if NETFRAMEWORK }
}
#endif

8
EnvelopeGenerator.Web/Controllers/EnvelopeController.cs
View File

@ -224,7 +224,7 @@ public class EnvelopeController : ViewControllerBase
{ {
if (er.Envelope!.Documents?.FirstOrDefault() is DocumentDto doc && doc.ByteData is not null) if (er.Envelope!.Documents?.FirstOrDefault() is DocumentDto doc && doc.ByteData is not null)
{ {
var edit = Pdf.FromMemory(doc.ByteData).Draw(1, canvas => using var pdf = Pdf.FromMemory(doc.ByteData).Design(1, canvas =>
{ {
canvas.SetStrokeColor(ColorConstants.RED); canvas.SetStrokeColor(ColorConstants.RED);
canvas.SetFillColor(ColorConstants.CYAN); canvas.SetFillColor(ColorConstants.CYAN);
@ -234,11 +234,7 @@ public class EnvelopeController : ViewControllerBase
canvas.FillStroke(); canvas.FillStroke();
}); });
edit._doc.Close(); doc.ByteData = pdf.ToBytes();
var foo = Convert.ToBase64String(edit.OutputStream.ToArray());
doc.ByteData = edit.OutputStream.ToArray();
ViewData["DocumentBytes"] = doc.ByteData; ViewData["DocumentBytes"] = doc.ByteData;
} }