c# - itextsharp 中的阿拉伯语编码

Question

当我尝试使用此代码使用 C# 创建阿拉伯语 PDF 时，生成的 PDF 文件包含离散字符。有什么帮助让我无法获得连续的字符吗？

//Create our document object
Document Doc = new Document(PageSize.LETTER);

//Create our file stream
using (FileStream fs = new FileStream(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "Test.pdf"), FileMode.Create, FileAccess.Write, FileShare.Read))
{
    //Bind PDF writer to document and stream
    PdfWriter writer = PdfWriter.GetInstance(Doc, fs);

    //Open document for writing
    Doc.Open();

    //Add a page
    Doc.NewPage();

    //Full path to the Unicode Arial file
    string ARIALUNI_TFF = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Fonts), "arabtype.TTF");

    //Create a base font object making sure to specify IDENTITY-H
    BaseFont bf = BaseFont.CreateFont(ARIALUNI_TFF, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);

    //Create a specific font object
    iTextSharp.text.Font f = new iTextSharp.text.Font(bf, 12, iTextSharp.text.Font.NORMAL);

    //Write some text, the last character is 0x0278 - LATIN SMALL LETTER PHI
    Doc.Add(new Phrase("This is a ميسو ɸ", f));

    //Write some more text, the last character is 0x0682 - ARABIC LETTER HAH WITH TWO DOTS VERTICAL ABOVE
    Doc.Add(new Phrase("Hello\u0682", f));

    //Close the PDF
    Doc.Close();
}

Answer 1

仅 ColumnText 和 PdfPTable 支持从右到左书写和阿拉伯连字!

看看下面的例子:

• http://itextpdf.com/examples/iia.php?id=205结果:say_peace.pdf
• http://itextpdf.com/examples/iia.php?id=215结果:peace.pdf

阅读引用这些示例的书，找出为什么并非所有单词都在 peace.pdf 中正确呈现

搜索http://tinyurl.com/itextsharpIIA2C11对于这些示例的相应 C# 版本。

无论如何，您需要一种知道如何显示阿拉伯字形的字体:

BaseFont bf = BaseFont.CreateFont(ARIALUNI_TFF, BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
Font f = new Font(bf, 12);

您现在可以添加阿拉伯文本，例如在表格中:

PdfPCell cell = new PdfPCell();
cell.AddElement(new Phrase("Hello\u0682", f));
cell.RunDirection = PdfWriter.RUN_DIRECTION_RTL;