using iTextSharp.text;
using iTextSharp.text.pdf;
using System;

namespace Net.CrossCotting
{
    public class PageEventHelper : PdfPageEventHelper
    {
        // This is the contentbyte object of the writer
        PdfContentByte cb;
        // we will put the final number of pages in a template
        PdfTemplate template;

        PdfTemplate templateHeader;
        // this is the BaseFont we are going to use for the header / footer
        BaseFont bf = null;
        // This keeps track of the creation time
        DateTime PrintTime = DateTime.Now;

        #region Properties
        private string _Title;
        public string Title
        {
            get { return _Title; }
            set { _Title = value; }
        }
        #endregion
        // we override the onOpenDocument method
        public override void OnOpenDocument(PdfWriter writer, Document document)
        {
            try
            {
                PrintTime = DateTime.Now;
                bf = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.NOT_EMBEDDED);
                cb = writer.DirectContent;
                template = cb.CreateTemplate(document.PageSize.Width, 80);
                templateHeader = cb.CreateTemplate(document.PageSize.Width, 80);
            }
            catch (DocumentException)
            {
            }
            catch (System.IO.IOException)
            {
            }
        }

        public override void OnStartPage(PdfWriter writer, Document document)
        {
            base.OnStartPage(writer, document);
            Rectangle pageSize = document.PageSize;
            if (Title != string.Empty)
            {
                cb.BeginText();
                cb.SetFontAndSize(bf, 15);
                cb.SetRgbColorFill(50, 50, 200);
                cb.SetColorFill(new BaseColor(103, 93, 152));
                cb.SetTextMatrix(pageSize.GetLeft(40), pageSize.GetTop(40));
                cb.ShowText(Title);
                cb.EndText();
            }
        }

        public override void OnEndPage(PdfWriter writer, Document document)
        {
            base.OnEndPage(writer, document);
            int pageN = writer.PageNumber;
            Rectangle pageSize = document.PageSize;
            cb.SetRgbColorFill(100, 100, 100);
            cb.BeginText();
            cb.SetFontAndSize(bf, 8);
            cb.SetTextMatrix(pageSize.GetLeft(40), pageSize.GetBottom(30));
            cb.EndText();
        }

        public override void OnCloseDocument(PdfWriter writer, Document document)
        {
            base.OnCloseDocument(writer, document);
            template.BeginText();
            template.SetFontAndSize(bf, 8);
            template.SetTextMatrix(0, 0);
            template.EndText();
        }
    }
}