using System.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;
namespace DotNet.Utilities
{
 /// <summary>
 /// PDF文檔操作類
 /// </summary>
 //------------------------------------調(diào)用--------------------------------------------
 //PDFOperation pdf = new PDFOperation();
 //pdf.Open(new FileStream(path, FileMode.Create));
 //pdf.SetBaseFont(@"C:\Windows\Fonts\SIMHEI.TTF");
 //pdf.AddParagraph("測試文檔（生成時間：" + DateTime.Now + "）", 15, 1, 20, 0, 0);
 //pdf.Close();
 //-------------------------------------------------------------------------------------
 public class PDFOperation
 {
  #region 構(gòu)造函數(shù)
  /// <summary>
  /// 構(gòu)造函數(shù)
  /// </summary>
  public PDFOperation()
  {
   rect = PageSize.A4;
   document = new Document(rect);
  }
  /// <summary>
  /// 構(gòu)造函數(shù)
  /// </summary>
  /// <param name="type">頁面大小(如"A4")</param>
  public PDFOperation(string type)
  {
   SetPageSize(type);
   document = new Document(rect);
  }
  /// <summary>
  /// 構(gòu)造函數(shù)
  /// </summary>
  /// <param name="type">頁面大小(如"A4")</param>
  /// <param name="marginLeft">內(nèi)容距左邊框距離</param>
  /// <param name="marginRight">內(nèi)容距右邊框距離</param>
  /// <param name="marginTop">內(nèi)容距上邊框距離</param>
  /// <param name="marginBottom">內(nèi)容距下邊框距離</param>
  public PDFOperation(string type, float marginLeft, float marginRight, float marginTop, float marginBottom)
  {
   SetPageSize(type);
   document = new Document(rect, marginLeft, marginRight, marginTop, marginBottom);
  }
  #endregion
  #region 私有字段
  private Font font;
  private Rectangle rect; //文檔大小
  private Document document;//文檔對象
  private BaseFont basefont;//字體
  #endregion
  #region 設(shè)置字體
  /// <summary>
  /// 設(shè)置字體
  /// </summary>
  public void SetBaseFont(string path)
  {
   basefont = BaseFont.CreateFont(path, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
  }
  /// <summary>
  /// 設(shè)置字體
  /// </summary>
  /// <param name="size">字體大小</param>
  public void SetFont(float size)
  {
   font = new Font(basefont, size);
  }
  #endregion
  #region 設(shè)置頁面大小
  /// <summary>
  /// 設(shè)置頁面大小
  /// </summary>
  /// <param name="type">頁面大小(如"A4")</param>
  public void SetPageSize(string type)
  {
   switch (type.Trim())
   {
    case "A4":
     rect = PageSize.A4;
     break;
    case "A8":
     rect = PageSize.A8;
     break;
   }
  }
  #endregion
  #region 實例化文檔
  /// <summary>
  /// 實例化文檔
  /// </summary>
  /// <param name="os">文檔相關(guān)信息（如路徑，打開方式等）</param>
  public void GetInstance(Stream os)
  {
   PdfWriter.GetInstance(document, os);
  }
  #endregion
  #region 打開文檔對象
  /// <summary>
  /// 打開文檔對象
  /// </summary>
  /// <param name="os">文檔相關(guān)信息（如路徑，打開方式等）</param>
  public void Open(Stream os)
  {
   GetInstance(os);
   document.Open();
  }
  #endregion
  #region 關(guān)閉打開的文檔
  /// <summary>
  /// 關(guān)閉打開的文檔
  /// </summary>
  public void Close()
  {
   document.Close();
  }
  #endregion
  #region 添加段落
  /// <summary>
  /// 添加段落
  /// </summary>
  /// <param name="content">內(nèi)容</param>
  /// <param name="fontsize">字體大小</param>
  public void AddParagraph(string content, float fontsize)
  {
   SetFont(fontsize);
   Paragraph pra = new Paragraph(content, font);
   document.Add(pra);
  }
  /// <summary>
  /// 添加段落
  /// </summary>
  /// <param name="content">內(nèi)容</param>
  /// <param name="fontsize">字體大小</param>
  /// <param name="Alignment">對齊方式（1為居中，0為居左，2為居右）</param>
  /// <param name="SpacingAfter">段后空行數(shù)（0為默認值）</param>
  /// <param name="SpacingBefore">段前空行數(shù)（0為默認值）</param>
  /// <param name="MultipliedLeading">行間距（0為默認值）</param>
  public void AddParagraph(string content, float fontsize, int Alignment, float SpacingAfter, float SpacingBefore, float MultipliedLeading)
  {
   SetFont(fontsize);
   Paragraph pra = new Paragraph(content, font);
   pra.Alignment = Alignment;
   if (SpacingAfter != 0)
   {
    pra.SpacingAfter = SpacingAfter;
   }
   if (SpacingBefore != 0)
   {
    pra.SpacingBefore = SpacingBefore;
   }
   if (MultipliedLeading != 0)
   {
    pra.MultipliedLeading = MultipliedLeading;
   }
   document.Add(pra);
  }
  #endregion
  #region 添加圖片
  /// <summary>
  /// 添加圖片
  /// </summary>
  /// <param name="path">圖片路徑</param>
  /// <param name="Alignment">對齊方式（1為居中，0為居左，2為居右）</param>
  /// <param name="newWidth">圖片寬（0為默認值，如果寬度大于頁寬將按比率縮放）</param>
  /// <param name="newHeight">圖片高</param>
  public void AddImage(string path, int Alignment, float newWidth, float newHeight)
  {
   Image img = Image.GetInstance(path);
   img.Alignment = Alignment;
   if (newWidth != 0)
   {
    img.ScaleAbsolute(newWidth, newHeight);
   }
   else
   {
    if (img.Width > PageSize.A4.Width)
    {
     img.ScaleAbsolute(rect.Width, img.Width * img.Height / rect.Height);
    }
   }
   document.Add(img);
  }
  #endregion
  #region 添加鏈接、點
  /// <summary>
  /// 添加鏈接
  /// </summary>
  /// <param name="Content">鏈接文字</param>
  /// <param name="FontSize">字體大小</param>
  /// <param name="Reference">鏈接地址</param>
  public void AddAnchorReference(string Content, float FontSize, string Reference)
  {
   SetFont(FontSize);
   Anchor auc = new Anchor(Content, font);
   auc.Reference = Reference;
   document.Add(auc);
  }
  /// <summary>
  /// 添加鏈接點
  /// </summary>
  /// <param name="Content">鏈接文字</param>
  /// <param name="FontSize">字體大小</param>
  /// <param name="Name">鏈接點名</param>
  public void AddAnchorName(string Content, float FontSize, string Name)
  {
   SetFont(FontSize);
   Anchor auc = new Anchor(Content, font);
   auc.Name = Name;
   document.Add(auc);
  }
  #endregion
 }
}