/****************************************************************************
 *
 * Project:         TextExt, C#.NET
 *
 * Description:     Extracts text of a page of a PDF document using the 
 *                  3-Heights PDF Extraction Tool. 
 *
 * Version:         1.01  (5-October-2005)
 *
 * Author:          Philip Renggli, PDF Tools AG   
 * 
 * Copyright:       Copyright (C) 2005 PDF Tools AG, Switzerland
 *                  Permission to use, copy, modify, and distribute this
 *                  software and its documentation for any purpose and without
 *                  fee is hereby granted, provided that the above copyright
 *                  notice appear in all copies and that both that copyright
 *                  notice and this permission notice appear in supporting
 *                  documentation.  This software is provided "as is" without
 *                  express or implied warranty.
 *
 ***************************************************************************/

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace TextExt
{
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Button Browse;
		private System.Windows.Forms.TextBox txtInput;
		private System.Windows.Forms.Button ExtractText;
		private AxMSComDlg.AxCommonDialog axCommonDialog;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.TextBox txtOutput;
		private System.Windows.Forms.TextBox txtPageNo;
		private System.Windows.Forms.Panel panel1;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.Label label4;
		private System.Windows.Forms.Label label5;

		private System.ComponentModel.Container components = null;

		public Form1()
		{
			InitializeComponent();
		}

		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Erforderliche Methode für die Designerunterstützung. 
		/// Der Inhalt der Methode darf nicht mit dem Code-Editor geändert werden.
		/// </summary>
		private void InitializeComponent()
		{
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
			this.Browse = new System.Windows.Forms.Button();
			this.txtInput = new System.Windows.Forms.TextBox();
			this.ExtractText = new System.Windows.Forms.Button();
			this.axCommonDialog = new AxMSComDlg.AxCommonDialog();
			this.txtOutput = new System.Windows.Forms.TextBox();
			this.label1 = new System.Windows.Forms.Label();
			this.txtPageNo = new System.Windows.Forms.TextBox();
			this.label2 = new System.Windows.Forms.Label();
			this.panel1 = new System.Windows.Forms.Panel();
			this.label3 = new System.Windows.Forms.Label();
			this.label4 = new System.Windows.Forms.Label();
			this.label5 = new System.Windows.Forms.Label();
			((System.ComponentModel.ISupportInitialize)(this.axCommonDialog)).BeginInit();
			this.SuspendLayout();
			// 
			// Browse
			// 
			this.Browse.BackColor = System.Drawing.SystemColors.ControlLight;
			this.Browse.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.Browse.ForeColor = System.Drawing.Color.Black;
			this.Browse.Location = new System.Drawing.Point(472, 488);
			this.Browse.Name = "Browse";
			this.Browse.Size = new System.Drawing.Size(24, 24);
			this.Browse.TabIndex = 8;
			this.Browse.Text = "...";
			this.Browse.Click += new System.EventHandler(this.Browse_Click);
			// 
			// txtInput
			// 
			this.txtInput.Location = new System.Drawing.Point(120, 488);
			this.txtInput.Name = "txtInput";
			this.txtInput.Size = new System.Drawing.Size(344, 20);
			this.txtInput.TabIndex = 7;
			this.txtInput.Text = "";
			// 
			// ExtractText
			// 
			this.ExtractText.BackColor = System.Drawing.SystemColors.ControlLight;
			this.ExtractText.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.ExtractText.ForeColor = System.Drawing.Color.Black;
			this.ExtractText.Location = new System.Drawing.Point(8, 544);
			this.ExtractText.Name = "ExtractText";
			this.ExtractText.Size = new System.Drawing.Size(96, 24);
			this.ExtractText.TabIndex = 6;
			this.ExtractText.Text = "Extract Text";
			this.ExtractText.Click += new System.EventHandler(this.ExtractText_Click);
			// 
			// axCommonDialog
			// 
			this.axCommonDialog.Enabled = true;
			this.axCommonDialog.Location = new System.Drawing.Point(464, 520);
			this.axCommonDialog.Name = "axCommonDialog";
			this.axCommonDialog.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axCommonDialog.OcxState")));
			this.axCommonDialog.Size = new System.Drawing.Size(32, 32);
			this.axCommonDialog.TabIndex = 9;
			// 
			// txtOutput
			// 
			this.txtOutput.Location = new System.Drawing.Point(8, 32);
			this.txtOutput.MaxLength = 200000;
			this.txtOutput.Multiline = true;
			this.txtOutput.Name = "txtOutput";
			this.txtOutput.ScrollBars = System.Windows.Forms.ScrollBars.Both;
			this.txtOutput.Size = new System.Drawing.Size(496, 448);
			this.txtOutput.TabIndex = 10;
			this.txtOutput.Text = "";
			// 
			// label1
			// 
			this.label1.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(122)), ((System.Byte)(182)), ((System.Byte)(215)));
			this.label1.Font = new System.Drawing.Font("Verdana", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.label1.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(0)), ((System.Byte)(102)), ((System.Byte)(153)));
			this.label1.Location = new System.Drawing.Point(0, 488);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(112, 18);
			this.label1.TabIndex = 11;
			this.label1.Text = " FILE NAME";
			// 
			// txtPageNo
			// 
			this.txtPageNo.Location = new System.Drawing.Point(120, 512);
			this.txtPageNo.Name = "txtPageNo";
			this.txtPageNo.Size = new System.Drawing.Size(40, 20);
			this.txtPageNo.TabIndex = 12;
			this.txtPageNo.Text = "1";
			// 
			// label2
			// 
			this.label2.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(122)), ((System.Byte)(182)), ((System.Byte)(215)));
			this.label2.Font = new System.Drawing.Font("Verdana", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.label2.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(0)), ((System.Byte)(102)), ((System.Byte)(153)));
			this.label2.Location = new System.Drawing.Point(0, 512);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(112, 18);
			this.label2.TabIndex = 13;
			this.label2.Text = " PAGE NUMBER";
			// 
			// panel1
			// 
			this.panel1.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(174)), ((System.Byte)(209)), ((System.Byte)(226)));
			this.panel1.Location = new System.Drawing.Point(-8, 0);
			this.panel1.Name = "panel1";
			this.panel1.Size = new System.Drawing.Size(120, 624);
			this.panel1.TabIndex = 15;
			// 
			// label3
			// 
			this.label3.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(153)), ((System.Byte)(102)));
			this.label3.Font = new System.Drawing.Font("Verdana", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.label3.ForeColor = System.Drawing.Color.White;
			this.label3.Location = new System.Drawing.Point(120, 8);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(384, 19);
			this.label3.TabIndex = 16;
			this.label3.Text = " 3-Heights PDF Extract Tool - Extract Text Sample";
			// 
			// label4
			// 
			this.label4.Location = new System.Drawing.Point(120, 544);
			this.label4.Name = "label4";
			this.label4.Size = new System.Drawing.Size(384, 16);
			this.label4.TabIndex = 17;
			this.label4.Text = "This is a text extraction sample for the 3-Heights PDF Extract Tool.";
			// 
			// label5
			// 
			this.label5.Location = new System.Drawing.Point(120, 560);
			this.label5.Name = "label5";
			this.label5.Size = new System.Drawing.Size(384, 16);
			this.label5.TabIndex = 18;
			this.label5.Text = "Copyright (C) 2005 PDF Tools AG, Switzerland";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.BackColor = System.Drawing.Color.White;
			this.ClientSize = new System.Drawing.Size(512, 581);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.label5,
																		  this.label4,
																		  this.label3,
																		  this.txtPageNo,
																		  this.txtInput,
																		  this.label2,
																		  this.label1,
																		  this.txtOutput,
																		  this.axCommonDialog,
																		  this.Browse,
																		  this.ExtractText,
																		  this.panel1});
			this.Name = "Form1";
			((System.ComponentModel.ISupportInitialize)(this.axCommonDialog)).EndInit();
			this.ResumeLayout(false);

		}
		#endregion

		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void Browse_Click(object sender, System.EventArgs e)
		{
			axCommonDialog.FileName = txtInput.Text;
			axCommonDialog.ShowOpen();
			txtInput.Text = axCommonDialog.FileName;
		}

		private void ExtractText_Click(object sender, System.EventArgs e)
		{
			PDFPARSERLib.DocumentClass document = new PDFPARSERLib.DocumentClass();
			if (document.Open(txtInput.Text, ""))
			{
				// clear the text control
				txtOutput.Text = "";
				
				// check the page range
				Int32.Parse(txtPageNo.Text);
				int iPageNo = Int32.Parse(txtPageNo.Text);
				if(iPageNo > 0 && iPageNo <= document.PageCount)
				{
					// set the page number
					document.PageNo = iPageNo;
					// get a content handle
					PDFPARSERLib.Content content = document.Page.Content;
					if(content != null)
					{
						// get one word per token
						content.BreakWords = true;
						// account page rotation
						content.Reset(true);
						// keep track of the last y-coordinate
						float y_old = -1.0f;
						while(content.GetNextText() != null)
						{
							// get a text handle
							PDFPARSERLib.Text text = content.Text;
							float y_new = 1.0f;
							if (text.Length > 0) 
								y_new = (float) ((object[])text.YPos)[0];
							// insert a blank if y-coordinate is the same as in previous token
							// insert a new line if it changes
							txtOutput.Text = string.Concat(txtOutput.Text, y_old == y_new ? " " : "\r\n" , text.UnicodeString);
							y_old = y_new;
						}
					}
					else
					{
						// no content on page
					}	
				}
				else
				{
					// page number out of range
				}	
			}
			else
			{
				// failed to open
			}
		}
	}
}