PDFsharp 自动换行

Question

如何使用 PDFsharp 在矩形内换行？

在我的尝试中，文本仍然延伸到 PDF 的页面之外。这是尝试过的：

rect = new XRect(20, 300, 400, 100);
tf.Alignment = XParagraphAlignment.Left;
gfx.DrawString("\t • Please call the borrower prior to closing and confirm your arrival time and the closing location. \n", font, XBrushes.Black, rect, XStringFormats.TopLeft);
rect = new XRect(20, 320, 100, 100);
gfx.DrawString("\t • If the borrower needs to change the closing appointment time or date for any reason please have them call McDonnell Law Firm at 866-931-8793 \n", font, XBrushes.Black, rect, XStringFormats.TopLeft);
rect = new XRect(20, 340, 100, 100);
gfx.DrawString("\t • Completed documents must be received same day. Fax back to 888-612-4912 or email ClosingDocs@appliedtechres.com \n", font, XBrushes.Black, rect, XStringFormats.TopLeft);
rect = new XRect(20, 360, 100, 100);
gfx.DrawString("\t • Documents are to be returned via Fedex or UPS with shipping label provided. Documents must be dropped same day. \n", font, XBrushes.Black, rect, XStringFormats.TopLeft);

这就是它正在做的事情>

Answer 1

根据您的代码 sn-p，我假设 tf 是 XTextFormatter 类的对象，而 gfx 是 XGraphics 对象。

XGraphics.DrawString 不支持换行。

XTextFormatter.DrawString 支持换行。

您的代码中的错误：您正在调用 gfx.DrawString，而您的本意是调用 tf.DrawString。

Answer 2

这是我的示例，它执行以下操作：

1. 定义一个矩形并画一个细长的框来显示轮廓

2. 将文本放置在框中，处理小逻辑以添加边距（向 X 坐标添加 5 px 并减去与文本宽度区域相同的 5 px。

3. XTextFormatter 将用于将文本放置在定义的矩形内。

示例

 PdfDocument pdf = new PdfDocument();
 PdfPage pdfPage = pdf.AddPage();
 XGraphics graph = XGraphics.FromPdfPage(pdfPage);

 var tf = new XTextFormatter(graph);
 var rect = new XRect(25, 50, 200, 34);

 XPen xpen = new XPen(XColors.Navy, 0.4);

 graph.DrawRectangle(xpen, rect);
 XStringFormat format = new XStringFormat();
 format.LineAlignment = XLineAlignment.Near;
 format.Alignment = XStringAlignment.Near;

 XBrush brush = XBrushes.Purple;
 tf.DrawString("This is some text written in a textbox over three lines bla bla bla bla bla ffffffffffffffffffffdsdsdsd", 
               new XFont("Helvetica", 8), 
               brush, 
               new XRect(rect.X + 5, rect.Y, rect.Width - 5, 34), format);

如何保存并运行示例：

string pdfFilename = "firstpage.pdf";
pdf.Save(pdfFilename);
Process.Start(pdfFilename);