//============================================================================
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//Gios Pdf.NET - A library for exporting Pdf Documents in C#
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//Copyright (C) 2005 Paolo Gios - www.paologios.com
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//
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//This library is free software; you can redistribute it and/or
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//modify it under the terms of the GNU Lesser General Public
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//License as published by the Free Software Foundation; either
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//version 2.1 of the License, or (at your option) any later version.
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//
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//This library is distributed in the hope that it will be useful,
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//but WITHOUT ANY WARRANTY; without even the implied warranty of
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//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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//Lesser General Public License for more details.
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//
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//You should have received a copy of the GNU Lesser General Public
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//License along with this library; if not, write to the Free Software
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//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//=============================================================================
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using System;
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using System.Collections;
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using System.IO;
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using System.Text;
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using System.Drawing;
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namespace HH.WMS.Utils.Gios.Pdf
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{
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/// <summary>
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/// The base Pdf Document.
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/// </summary>
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public class PdfDocument
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{
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internal static bool FlateCompression=true;
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/// <summary>
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/// sets the page format for the Pdf Documents (default is A4)
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/// </summary>
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/// <param name="PdfDocumentFormat"></param>
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public void SetPageFormat(PdfDocumentFormat PdfDocumentFormat)
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{
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this.PdfDocumentFormat=PdfDocumentFormat;
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}
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internal double PH
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{
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get
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{
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return this.PdfDocumentFormat.height;
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}
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}
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internal double PW
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{
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get
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{
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return this.PdfDocumentFormat.width;
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}
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}
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internal PdfDocumentFormat PdfDocumentFormat=PdfDocumentFormat.A4;
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/// <summary>
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/// gets othe height of the page in points (using 72 dpi depth)
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/// </summary>
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public double PageHeight
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{
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get
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{
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return PH;
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}
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}
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/// <summary>
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/// gets the width of the page in points (using 72 dpi depth)
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/// </summary>
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public double PageWidth
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{
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get
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{
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return PW;
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}
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}
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#region properties
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internal int _nextid=0;
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internal int GetNextId
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{
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get
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{
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_nextid++;
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return _nextid;
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}
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}
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internal Hashtable PdfObjects;
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private PdfObject Header
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{
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get
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{
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foreach (PdfObject po in this.PdfObjects.Values)
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if (po.GetType()==typeof(PdfHeader)) return po;
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return null;
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}
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set
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{
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foreach (PdfObject po in this.PdfObjects.Values)
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if (po.GetType()==typeof(PdfHeader))
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{
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this.PdfObjects.Remove(po.HeadObj);
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break;
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}
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this.PdfObjects.Add(value.HeadObj,value);
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}
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}
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internal PdfObject Catalog
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{
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get
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{
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foreach (PdfObject po in this.PdfObjects.Values)
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if (po.GetType()==typeof(PdfCatalog)) return po;
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return null;
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}
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}
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internal PdfObject PdfRoot
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{
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get
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{
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foreach (PdfObject po in this.PdfObjects.Values)
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if (po.GetType()==typeof(PdfRoot)) return po;
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return null;
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}
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}
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/// <summary>
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/// gets the current saved pages number of the document.
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/// </summary>
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public int PageCount
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{
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get
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{
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int count=0;
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foreach (PdfObject po in this.PdfObjects.Values)
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if (po.GetType()==typeof(PdfPage)) count++;
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return count;
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}
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}
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internal ArrayList FontList
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{
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get
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{
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ArrayList al=new ArrayList();
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foreach (PdfObject po in this.PdfObjects.Values)
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if (po.GetType()==typeof(PdfFont)) al.Add(po);
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return al;
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}
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}
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internal bool ContainsFont(PdfFont pf)
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{
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bool r=false;
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foreach (PdfFont pf2 in this.FontList)
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{
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if (pf2.Name==pf.Name) r=true;
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}
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return r;
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}
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internal ArrayList FontNameList
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{
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get
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{
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ArrayList al=new ArrayList();
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foreach (PdfObject po in this.PdfObjects.Values)
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if (po.GetType()==typeof(PdfFont)) al.Add((po as PdfFont).Name);
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return al;
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}
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}
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System.IO.Stream ms;
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#endregion
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/// <summary>
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/// set Document Subject and Title.
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/// </summary>
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public void SetHeaders(string subject,string title,string author)
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{
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if (subject==null) throw new Exception("string Subject cannot be null.");
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if (title==null) throw new Exception("string Title cannot be null.");
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this.Header=new PdfHeader(this,subject,title,author);
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}
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/// <summary>
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/// Creates a new Pdf Document.
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/// </summary>
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public PdfDocument()
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{
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PdfObjects=new Hashtable();
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this.AddPdfObject(new PdfHeader(this,"","",""));
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}
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public PdfDocument(PdfDocumentFormat DocumentFormat)
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{
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this.SetPageFormat(DocumentFormat);
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PdfObjects=new Hashtable();
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this.AddPdfObject(new PdfHeader(this,"","",""));
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}
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internal void AddPdfObject(PdfObject po)
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{
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po.PdfDocument=this;
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if (!this.PdfObjects.ContainsKey(po.HeadObj))
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{
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this.PdfObjects.Add(po.HeadObj,po);
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}
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}
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private void Send(string strMsg)
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{
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Byte[] buffer=null;
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buffer=ASCIIEncoding.ASCII.GetBytes(strMsg);
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ms.Write(buffer,0,buffer.Length);
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}
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/// <summary>
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/// Outputs the Complete Pdf Document to a Generic Stream
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/// </summary>
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/// <param name="m">
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/// The Generic Stream to Output the Pdf Document
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/// </param>
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public void SaveToStream(System.IO.Stream m)
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{
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this.AddPdfObject(new PdfCatalog(this));
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this.AddPdfObject(new PdfRoot(this));
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this.ms=m;
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try {Send("%PDF-1.4\n");}
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catch {throw new Exception("Error writing to the output stream.");}
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string xref="xref\n0 "+this.PdfObjects.Count.ToString()+"\n0000000000 65535 f \n";
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long pos=0;
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for (int x=1;x<=this._nextid;x++)
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{
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PdfObject o=this.PdfObjects[x.ToString()+" 0 obj\n"] as PdfObject;
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if (o!=null)
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{
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xref+=Utility.xRefFormatting(pos)+" 00000 n \n";
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try {pos+=o.StreamWrite(ms);}
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catch {throw new Exception("Error generating the document.");}
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}
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}
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long startxref=pos;
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Send(xref);
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Send("trailer\n<<\n/Size "+ (PdfObjects.Count)+"\n/Root "+this.Catalog.HeadR+"\n/Info "+this.Header.HeadR+"\n>>\n");
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Send("startxref\n" + startxref+"\n");
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Send("%%EOF\n");
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}
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/// <summary>
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/// Outputs the complete PDF Document to a file
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/// </summary>
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/// <param name="file"></param>
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public void SaveToFile(string file)
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{
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System.IO.FileStream fs;
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try
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{
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fs=new FileStream(file,FileMode.Create,FileAccess.Write);
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}
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catch
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{throw new Exception("Error opening destination file");}
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this.SaveToStream(fs);
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fs.Close();
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}
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internal void AddFont(System.Drawing.Font f)
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{
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string name=PdfFont.FontToPdfType(f);
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PdfFont pf=new PdfFont(name,name);
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if (!this.ContainsFont(pf))
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{
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pf.ID=this.GetNextId;
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this.AddPdfObject(pf);
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}
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}
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/// <summary>
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/// Creates a New Page for the Pdf Document
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/// </summary>
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/// <returns>
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///
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/// </returns>
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public PdfPage NewPage()
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{
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PdfPage p=new PdfPage();
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p.PdfDocument=this;
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return p;
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}
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/// <summary>
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/// Insert the Image Object into the Document before placing it in a document page
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/// </summary>
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/// <param name="file">
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/// the Color 72dpi Jpeg Image to insert into the document
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/// </param>
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/// <returns>
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///
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///</returns>
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public PdfImage NewImage(string file)
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{
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PdfImage pi;
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try {pi=new PdfImage(this.GetNextId,file);}
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catch {throw new Exception("Error opening the Image File");}
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this.AddPdfObject(pi);
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return pi;
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}
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/// <summary>
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/// Instantiates a new PdfTable setting the default specs.
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/// </summary>
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/// <param name="DefaultContentAlignment"></param>
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/// <param name="DefaultFont"></param>
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/// <param name="DefaultForegroundColor"></param>
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/// <param name="Rows"></param>
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/// <param name="Columns"></param>
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/// <param name="CellPadding"></param>
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/// <returns></returns>
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public PdfTable NewTable(ContentAlignment DefaultContentAlignment,Font DefaultFont,Color DefaultForegroundColor,int Rows
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,int Columns,double CellPadding)
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{
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if (Rows<=0) throw new Exception("Rows must be grater than zero.");
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if (Columns<=0) throw new Exception("Columns must be grater than zero.");
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if (CellPadding<0) throw new Exception("CellPadding must be non-negative.");
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PdfTable pt=new PdfTable(this,DefaultContentAlignment,DefaultFont,DefaultForegroundColor,Rows
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,Columns,CellPadding);
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pt.header=new PdfTable(this,ContentAlignment.MiddleCenter,DefaultFont,Color.Black,1
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,Columns,CellPadding);
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return pt;
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}
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/// <summary>
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/// Instantiates a new PdfTable setting the default specs.
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/// </summary>
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/// <param name="DefaultFont"></param>
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/// <param name="Rows"></param>
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/// <param name="Columns"></param>
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/// <param name="CellPadding"></param>
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/// <returns></returns>
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public PdfTable NewTable(Font DefaultFont,int Rows,int Columns,double CellPadding)
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{
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if (Rows<=0) throw new Exception("Rows must be grater than zero.");
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if (Columns<=0) throw new Exception("Columns must be grater than zero.");
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if (CellPadding<0) throw new Exception("CellPadding must be non-negative.");
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PdfTable pt=new PdfTable(this,ContentAlignment.TopCenter,DefaultFont,Color.Black,Rows
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,Columns,CellPadding);
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pt.header=new PdfTable(this,ContentAlignment.MiddleCenter,DefaultFont,Color.Black,1
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,Columns,CellPadding);
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return pt;
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}
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}
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}
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