AppStd/EnvelopeGenerator
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refactor(Pdf): Add Background-method to place a background behind the signatures.

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tekh
2025-09-26 16:00:25 +02:00
parent bf0bd8e9e7
commit 16657f6a31
5 changed files with 45 additions and 47 deletions
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4
EnvelopeGenerator.PdfEditor/EnvelopeGenerator.PdfEditor.csproj
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@@ -21,4 +21,8 @@
<PackageReference Include="itext.bouncy-castle-adapter" Version="8.0.5" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\EnvelopeGenerator.Domain\EnvelopeGenerator.Domain.csproj" />
</ItemGroup>
</Project>

40
EnvelopeGenerator.PdfEditor/Pdf.cs
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@@ -1,10 +1,14 @@
using iText.Kernel.Pdf;
using iText.Kernel.Pdf.Canvas;
using EnvelopeGenerator.Domain.Interfaces;
using iText.Kernel.Colors;
using iText.Kernel.Geom;
#if NETFRAMEWORK
using System.IO;
using System;
using System.IO;
using System.Threading.Tasks;
using System.Collections.Generic;
#endif
namespace EnvelopeGenerator.PdfEditor
@@ -76,6 +80,40 @@ namespace EnvelopeGenerator.PdfEditor
});
#endregion
public Pdf<TInputStream, TOutputStream> Background<TSignature>(IEnumerable<TSignature> signatures)
where TSignature : ISignature
{
foreach (var signature in signatures)
Page(signature.Page, page =>
{
var canvas = new PdfCanvas(page);
double inchFactor = 72;
double magin = .2;
double x = (signature.X - .7 - magin) * inchFactor;
double y = (signature.Y - .5 - magin) * inchFactor;
double width = 1.9500000000000002 * inchFactor;
double height = 2.52 * inchFactor;
double bottomLineLength = 2.5;
Rectangle pageSize = page.GetPageSize();
canvas.ConcatMatrix(1, 0, 0, -1, 0, pageSize.GetHeight());
// draw background
canvas.SetFillColor(new DeviceRgb(222, 220, 215))
.Rectangle(x, y, width, height)
.Fill();
// draw bottom line
canvas.SetFillColor(new DeviceRgb(204, 202, 198))
.Rectangle(x, y + height - bottomLineLength, width, bottomLineLength)
.Fill();
});
return this;
}
#region Finalizer
private bool _disposed = false;