Spire.PDF for Python 12.1.3 は署名表示形式のカスタマイズに対応

class MyPdfCustomAppearance(IPdfSignatureAppearance):
    def __init__(self):
        pass

    def Generate(self, g: PdfCanvas):
        x = 0.0
        y = 0.0
        fontSize = 10.0
        font = PdfTrueTypeFont("SimSun", fontSize, PdfFontStyle.Regular, True)
        lineHeight = fontSize
        image = PdfImage.FromFile(inputImage)
        g.DrawImage(image, x, y)
        x = float(image.Width)
        g.DrawString("Signer: Gary", font, PdfBrushes.get_Red(), PointF(x, y))
        y += lineHeight + 5
        g.DrawString("Phone: +86 12345678", font, PdfBrushes.get_Black(), PointF(x, y))
        y += lineHeight + 5
        g.DrawString("Address: Sichuan Province, China", font, PdfBrushes.get_Black(), PointF(x, y))

doc = PdfDocument()
doc.LoadFromFile(inputFile)
signatureMaker = PdfOrdinarySignatureMaker(doc, inputFile_pfx, "e-iceblue")
my_appearance = MyPdfCustomAppearance()
customAppearance = PdfCustomAppearance(my_appearance)
signatureMaker.MakeSignature("Signer", doc.Pages.get_Item(0), 90.0, 550.0, 270.0, 640.0, customAppearance)
doc.SaveToFile(outputFile)
doc.Close()

PdfDocument doc = new PdfDocument();
doc.LoadFromFile(inputFile);
// 矩形を定義する
RectangleF rctg = new RectangleF(0, 0, 200, 300);
var page = doc.Pages[0];
PdfTextFinder finder = new PdfTextFinder(page);
finder.Options.Parameter = TextFindParameter.None;
finder.Options.Area = rctg;
// 矩形内のテキストを検索する
List findouts = finder.FindAllText();            
StringBuilder sb = new StringBuilder();
foreach (PdfTextFragment find in findouts)
{
    sb.AppendLine(find.Text);
    sb.AppendLine(find.TextStates[0].FontName);
    sb.AppendLine(find.TextStates[0].FontSize.ToString("F2"));
}
File.WriteAllText(outputFile, sb.ToString());