Asp.net 如何使用iTextSharp绘制轮廓颜色为红色,内部颜色为灰色的水印文本
如何使用iTextSharp绘制轮廓颜色为红色、内部颜色为灰色的水印文本如果您使用的是水印,我假设您所说的是Asp.net 如何使用iTextSharp绘制轮廓颜色为红色,内部颜色为灰色的水印文本,asp.net,pdf,itextsharp,Asp.net,Pdf,Itextsharp,如何使用iTextSharp绘制轮廓颜色为红色、内部颜色为灰色的水印文本如果您使用的是水印,我假设您所说的是PdfStamper。如果是这样,一旦您使用GetOverContent()或GetUnderContent()获得了原始的PdfContentByte,您只需要设置几个属性 PdfContentByte.SetLineWidth(单个)-设置笔划厚度 PdfContentByte.SetColorFill(BaseColor.GRAY)-设置填充颜色。您还可以使用任何其他颜色方法,例如
PdfStamper
。如果是这样,一旦您使用GetOverContent()
或GetUnderContent()
获得了原始的PdfContentByte
,您只需要设置几个属性
-设置笔划厚度PdfContentByte.SetLineWidth(单个)
-设置填充颜色。您还可以使用任何其他颜色方法,例如PdfContentByte.SetColorFill(BaseColor.GRAY)
或SetRGBColorFill()
SetCMYKColorFill()
-设置笔划颜色PdfContentByte.SetColorStroke(BaseColor.RED)
-标记希望同时使用填充和笔划绘制文本PdfContentByte.SetTextRenderingMode(PdfContentByte.TEXT\u RENDER\u MODE\u FILL\u STROKE)
Option Explicit On
Option Strict On
Imports iTextSharp.text
Imports iTextSharp.text.pdf
Imports System.IO
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
''//Our sample files
Dim InputFile = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "Test.pdf")
Dim OutputFile = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "Test_W_Watermark.pdf")
''//Create our input file to watermark later, nothing special here
Using FS As New FileStream(InputFile, FileMode.Create, FileAccess.Write, FileShare.Read)
Using Doc As New Document(PageSize.LETTER)
Using W = PdfWriter.GetInstance(Doc, FS)
Doc.Open()
Doc.Add(New Paragraph("This is a test"))
Doc.Close()
End Using
End Using
End Using
''//Watermark the file that we create above
''//Bind a reader to our input file
Dim R As New PdfReader(InputFile)
''//Create our output file stream
Using FS As New FileStream(OutputFile, FileMode.Create, FileAccess.Write, FileShare.Read)
''//Bind a stamper to our output file stream
Using stamper As New PdfStamper(R, FS)
''//Grab the raw content byte to draw with
Dim cb = stamper.GetOverContent(1)
''//Flag that we are starting text commands
cb.BeginText()
''//Set the stroke width
cb.SetLineWidth(2)
''//Set the fill (inner) color for the font
cb.SetColorFill(BaseColor.GRAY)
''//Set the stroke (outer) color for the font
cb.SetColorStroke(BaseColor.RED)
''//Flag that when drawing text the system should use both a fill and a stroke
cb.SetTextRenderingMode(PdfContentByte.TEXT_RENDER_MODE_FILL_STROKE)
''//Set a font to draw with
cb.SetFontAndSize(BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.EMBEDDED), 50)
''//Tell the system to start drawing at the center of the first page
cb.SetTextMatrix(R.GetPageSize(1).Width / 2, R.GetPageSize(1).Height / 2)
''//Draw the actual text
cb.ShowText("Hello")
''//Flag that we are done drawing text
cb.EndText()
End Using
End Using
Me.Close()
End Sub
End Class
请不要在寻求帮助时发短信“Very Urjent”/“Immediate”等。这很有效。非常感谢你。我缺少PdfContentByte.SetTextRenderingMode(PdfContentByte.TEXT\u RENDER\u MODE\u FILL\u STROKE)