using iTextSharp.text;
using iTextSharp.text.pdf;
using Lskj.Business;
using Lskj.Business.Impl;
using Lskj.Control;
using Lskj.Core;
using O2S.Components.PDFView4NET;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Windows.Forms;

namespace Lskj.PubPdfSign.Controls
{
    public partial class PdfEditorEx : UserControl
    {
        public PdfEditorEx()
        {
            InitializeComponent();
            //this.pdfPageView.ZoomMode = PDFZoomMode.Custom;
            this.SizeChanged += OnPdfEditorExSizeChanged;
            this.pdfPageView.SizeChanged += OnPdfEditorExSizeChanged;
            this.btn_UpPage.Click += OnBtnUpPageClick;
            this.btn_NextPage.Click += OnBtnNextPageClick;
        }
        /// <summary>
        /// PDF页面大小改变时
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OnPdfPageViewSizeChanged(object sender, EventArgs e)
        {
            return;
        }
        /// <summary>
        /// PDF页面大小改变时
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OnPdfEditorExSizeChanged(object sender, EventArgs e)
        {
            int pageIndex = pdfPageView.PageNumber;
            if (pdfDocument.Pages.Count == 0 || pdfPageView.PageNumber > pdfDocument.Pages.Count)
            {
                return;
            }
            List<SignBox> signBoxes = _signBoxList.Where(n => n.PageNumber == pdfPageView.PageNumber + 1).ToList();
            foreach (SignBox item in signBoxes)
            {
                if (item.ParentResizeControl != null)
                {
                    item.ParentResizeControl.Visible = false;
                }
                ToSignBoxImage(item, pageIndex, item.AbsoluteX, item.AbsoluteY, item.PdfImageWidth, item.PdfImageHeight);
            }
        }
        /// <summary>
        /// 记录全局选中控件
        /// </summary>
        public SignBox _selectedSignBox;
        /// <summary>
        /// 步骤表
        /// </summary>
        public DataTable StepTable = new DataTable();
        /// <summary>
        /// 保存完成后
        /// </summary>
        public event EventHandler OnAfterSignSaveCallback;
        /// <summary>
        /// 添加签章完成后
        /// </summary>
        public event EventHandler OnAfterSignAddCallback;
        public ToolStrip EditToolStrip { get { return this.editToolStrip; } }
        /// <summary>
        /// 关联模板id
        /// </summary>
        public string VersionCode;
        /// <summary>
        /// 源文件(该文件不进行编辑)
        /// </summary>
        public string TempletFilePath;
        /// <summary>
        /// 当前页码
        /// </summary>
        public int CurrentPageNo;
        /// <summary>
        /// 签名集合
        /// </summary>
        public List<SignBox> _signBoxList = new List<SignBox>();
        /// <summary>
        /// 当前操作文件
        /// </summary>
        private string _currentPdf;
        #region 事件
        /// <summary>
        /// 下一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OnBtnNextPageClick(object sender, EventArgs e)
        {
            try
            {
                if (this.pdfPageView.PageNumber < this.pdfDocument.PageCount - 1)
                {
                    this.pdfPageView.PageNumber++;
                    this.CurrentPageNo = this.pdfPageView.PageNumber;
                    this.FindSignBox();
                }
            }
            catch (Exception ex)
            {
                MessageUtil.Show(ex.Message);
            }
        }
        /// <summary>
        /// 上一页
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OnBtnUpPageClick(object sender, EventArgs e)
        {
            try
            {
                if (this.pdfPageView.PageNumber > 0)
                {
                    this.pdfPageView.PageNumber--;
                    this.CurrentPageNo = this.pdfPageView.PageNumber;
                    this.FindSignBox();
                }
            }
            catch (Exception ex)
            {
                MessageUtil.Show(ex.Message);
            }
        }
        /// <summary>
        /// 保存
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public void OnBtnSaveClick(object sender, EventArgs e)
        {
            try
            {
                if (string.IsNullOrEmpty(VersionCode))
                {
                    MessageUtil.Show("请先设置版本名称并保存后再设计");
                    return;
                }
                if (string.IsNullOrEmpty(this._currentPdf)) return;
                string defaultSavePath = $"{Application.StartupPath}\\PdfSign\\PdfFileTemp\\signTempFile.pdf";
                string tempSavePath = $"{Application.StartupPath}\\PdfSign\\PdfFileSaveTemp\\signTempFile.pdf";
                if (!Directory.Exists(Path.GetDirectoryName(defaultSavePath)))
                {
                    Directory.CreateDirectory(Path.GetDirectoryName(defaultSavePath));
                }
                if (!Directory.Exists(Path.GetDirectoryName(tempSavePath)))
                {
                    Directory.CreateDirectory(Path.GetDirectoryName(tempSavePath));
                }
                this.Save(defaultSavePath);
                this.pdfDocument.Close();
                File.Copy(defaultSavePath, tempSavePath, true);
                foreach (SignBox signBox in this._signBoxList)
                {
                    if (signBox.ParentPicBox != null)
                    {
                        signBox.ParentPicBox.Dispose();
                    }
                    if (signBox.ParentResizeControl != null)
                    {
                        signBox.ParentResizeControl.Dispose();
                    }
                }
                this._signBoxList = new List<SignBox>();
                this._currentPdf = tempSavePath;
                this.pdfDocument.Load(this._currentPdf);
                LoadSign(VersionCode, true);
                //加载到保存前的页码位置
                this.pdfPageView.PageNumber = this.CurrentPageNo;
                if (OnAfterSignSaveCallback != null)
                {
                    OnAfterSignSaveCallback(null, null);
                }
            }
            catch (Exception ex)
            {
                MessageUtil.Show(ex.Message);
            }
        }
        /// <summary>
        /// 打开文件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OnBtnOpenClick(object sender, EventArgs e)
        {
            try
            {
                OpenLocalFile();
            }
            catch (Exception ex)
            {
                MessageUtil.Show(ex.Message);
            }
        }
        /// <summary>
        /// 签名删除
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OnItemClick(object sender, EventArgs e)
        {
            ToolStripMenuItem toolStripMenuItem = (ToolStripMenuItem)sender;
            PictureBox pictureBox = (PictureBox)toolStripMenuItem.Tag;
            SignBox signBox = (SignBox)pictureBox.Tag;
            this._signBoxList.Remove(signBox);
            if (signBox.ParentPicBox != null)
            {
                signBox.ParentPicBox.Dispose();
            }
            if (signBox.ParentResizeControl != null)
            {
                signBox.ParentResizeControl.Dispose();
            }
            if (OnAfterSignAddCallback != null)
            {
                OnAfterSignAddCallback(null, null);
            }
        }
        /// <summary>
        /// 添加签名控件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public void OnBtnAddSignClick(object sender, EventArgs e)
        {
            string selectSql = $"select * from P_SignLocationTable where mainId = '{VersionCode}'";
            DataTable dataTable = SqlHelper.ExecuteDataTable(selectSql);
            foreach (DataRow item in StepTable.Rows)
            {
                string stepCode = item["stepCode"] + "";
                string stepName = item["stepName"] + "";
                bool allowAdd = _signBoxList.Where(n => n.StepCode.Equals(stepCode)).Count() == 0;
                if (!allowAdd || dataTable.Rows.Cast<DataRow>().Where(n => (n["stepCode"] + "").Equals(stepCode)).Count() > 0)
                {
                    continue;
                }
                else
                {
                    AddSignPicControl(stepCode);
                }
            }
            if (OnAfterSignAddCallback != null)
            {
                OnAfterSignAddCallback(null, null);
            }

        }
        #endregion
        #region 方法
        /// <summary>
        /// 打开本地PDF文件
        /// </summary>
        /// <returns></returns>
        private string OpenLocalFile()
        {
            string fileName = string.Empty;
            OpenFileDialog openFileDialog = new OpenFileDialog();
            openFileDialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
            openFileDialog.Filter = "(*.pdf)|*.pdf";
            openFileDialog.RestoreDirectory = true;
            openFileDialog.FilterIndex = 1;
            if (openFileDialog.ShowDialog() == DialogResult.OK)
            {
                this._currentPdf = TempletFilePath = fileName = openFileDialog.FileName;
                this.pdfDocument.Load(this._currentPdf);
                //LoadSign();
                this.CurrentPageNo = 0;
                this.pdfPageView.PageNumber = this.CurrentPageNo;
            }
            return fileName;
        }
        public void OpenLocalFile(DataRow dataRow, bool allowSetMove = true)
        {
            ClearSignBox();
            string defaultDownPath = $"{Application.StartupPath}\\PdfSign\\PdfFileTemp\\downTempFile.pdf";
            string pdfUrl = dataRow["pdfUrl"] + "";
            pdfUrl = pdfUrl.StartsWith("http") ? pdfUrl : SystemInfo.Instance.OAUrl + pdfUrl;
            CloseDocument();
            using (WebClient webClient = new WebClient())
            {
                try
                {
                    if (!Directory.Exists(Path.GetDirectoryName(defaultDownPath)))
                    {
                        Directory.CreateDirectory(Path.GetDirectoryName(defaultDownPath));
                    }
                    File.Delete(defaultDownPath);
                    webClient.DownloadFile(pdfUrl, defaultDownPath);
                }
                catch (Exception ex)
                {
                    MessageUtil.Show(ex.Message);
                }
            }
            this._currentPdf = TempletFilePath = defaultDownPath;
            this.pdfDocument.Load(this._currentPdf);
            LoadSign(VersionCode, allowSetMove);
            this.CurrentPageNo = 0;
            this.pdfPageView.PageNumber = this.CurrentPageNo;
        }
        /// <summary>
        /// 加载已经存在的标签
        /// </summary>
        public void LoadSign(string versionCode, bool allowSetMove = true)
        {
            string selectSql = $"select * from P_SignLocationTable where mainId = '{versionCode}'";
            DataTable dataTable = SqlHelper.ExecuteDataTable(selectSql);
            string url = string.Empty;
            if (dataTable != null && dataTable.Rows.Count > 0)
            {
                this._signBoxList = new List<SignBox>();
                foreach (DataRow item in dataTable.Rows)
                {
                    string stepName = string.Empty;
                    url = item["pdfAdditionalUrl"] + "";
                    string stepCode = item["stepCode"] + "";
                    int imageHeight = (int)Convert.ToDecimal(item["pdfImageHeight"] + "");
                    int imageWidth = (int)Convert.ToDecimal(item["pdfImageWidth"] + "");
                    Bitmap image = new Bitmap(150, 50);
                    if (stepCode.Equals("9999"))
                    {
                        url = "@select convert(varchar,getdate(),23)";
                    }
                    if (!string.IsNullOrEmpty(url))
                    {
                        if (url.StartsWith("http"))
                        {
                            using (WebClient webClient = new WebClient())
                            {
                                byte[] data = webClient.DownloadData(url);
                                using (MemoryStream stream = new MemoryStream(data))
                                {
                                    image = new Bitmap(stream);
                                }
                            }
                        }
                        else if (url.StartsWith("@"))
                        {
                            try
                            {
                                string addInfo = BaseImpl.GetResult(url.TrimStart('@')) + "";
                                using (Graphics graphics = Graphics.FromImage(image))
                                {
                                    graphics.Clear(Color.Transparent);
                                    StringFormat stringFormat = new StringFormat
                                    {
                                        Alignment = StringAlignment.Center,
                                        LineAlignment = StringAlignment.Center
                                    };
                                    RectangleF rect = new RectangleF(0, 0, 150, 50);
                                    graphics.DrawString(addInfo, new System.Drawing.Font("微软雅黑", 16, FontStyle.Regular), new SolidBrush(Color.Black), rect, stringFormat);
                                }
                            }
                            catch (Exception ex)
                            {
                                MessageUtil.Show(ex.Message);
                            }
                        }
                    }
                    else
                    {
                        image = new Bitmap(100, 50);
                        Graphics graphics = Graphics.FromImage(image);
                        DataRow dataRow = StepTable.Rows.Cast<DataRow>().Where(n => (n["stepCode"] + "").Equals(stepCode)).FirstOrDefault();
                        stepName = dataRow["stepName"] + "";
                        StringFormat stringFormat = new StringFormat
                        {
                            Alignment = StringAlignment.Center,
                            LineAlignment = StringAlignment.Center
                        };
                        RectangleF rect = new RectangleF(0, 0, 100, 50);
                        graphics.DrawString(stepName, new System.Drawing.Font("微软雅黑", 24, FontStyle.Bold), new SolidBrush(Color.Green), rect, stringFormat);
                    }
                    SignBox signBox = new SignBox(pdfPageView, pdfDocument.Pages[pdfPageView.PageNumber]);
                    PictureBox pictureBox = new PictureBox();
                    pictureBox.SizeMode = PictureBoxSizeMode.StretchImage;

                    _signBoxList.Add(signBox);
                    try
                    {
                        signBox.pdfAdditionalUrl = url;
                        signBox.StepCode = stepCode;
                        signBox.StepName = stepName;
                        signBox.ParentPicBox = pictureBox;
                        signBox.PageNumber = (int)Convert.ToDecimal(item["pageNum"] + "");
                        pictureBox.BorderStyle = BorderStyle.None;
                        pictureBox.Image = image;
                        int pdfImageHeight = (int)Convert.ToDecimal(item["pdfImageHeight"] + "");
                        int pdfImageWidth = (int)Convert.ToDecimal(item["pdfImageWidth"] + "");
                        int absoluteY = (int)Convert.ToDecimal(item["absoluteY"] + "");
                        int absoluteX = (int)Convert.ToDecimal(item["absoluteX"] + "");
                        ToSignBoxImage(signBox, signBox.PageNumber - 1, absoluteX, absoluteY, pdfImageWidth, pdfImageHeight);
                        //pictureBox.Height = signHeight;
                        //pictureBox.Width = signWidth;
                        pictureBox.Tag = signBox;
                        pictureBox.Parent = this.pdfPageView;
                        if (allowSetMove)
                        {
                            pictureBox.SetMove();
                        }
                        signBox.UpdateLocation();
                        ContextMenuStrip cms = new ContextMenuStrip();
                        cms.Items.Add("删除");
                        cms.Items[0].Click += new EventHandler(OnItemClick);
                        cms.Items[0].Tag = pictureBox;
                        pictureBox.ContextMenuStrip = cms;

                        //pictureBox.BringToFront();
                        //pictureBox.Location = new Point(signLeft, signTop);
                        //pictureBox.MouseDown += new MouseEventHandler(OnPictureBox_MouseDown);
                        //pictureBox.MouseMove += new MouseEventHandler(OnPictureBox_MouseMove);
                        //pictureBox.MouseUp += new MouseEventHandler(OnPictureBox_MouseUp);
                        //pictureBox.MouseClick += new MouseEventHandler(OnPictureBox_MouseClick);
                        //pictureBox.MouseLeave += new EventHandler(OnPictureBox_MouseLeave);
                    }
                    catch (Exception ex)
                    {
                        MessageUtil.Show(ex.Message);
                        _signBoxList.Remove(signBox);
                        pictureBox.Dispose();
                    }
                }
            }
            FindSignBox();
        }
        /// <summary>
        /// 加载记录的sign坐标
        /// </summary>
        private void FindSignBox()
        {
            //翻页切换时候进行画点操作
            //List<SignBox> signBoxs = _signBoxList.Where(o => o.PageNumber == this.pdfPageView.PageNumber).ToList();
            foreach (SignBox item in this._signBoxList)
            {
                if (item.PageNumber != this.CurrentPageNo + 1)
                {
                    if (item.ParentPicBox != null)
                    {
                        item.ParentPicBox.Parent = null;
                    }
                    if (item.ParentResizeControl != null)
                    {
                        item.ParentResizeControl.Parent = null;
                    }
                }
                else
                {
                    if (item.ParentPicBox != null)
                    {
                        item.ParentPicBox.Parent = this.pdfPageView;
                    }
                    if (item.ParentResizeControl != null)
                    {
                        item.ParentResizeControl.Parent = this.pdfPageView;
                    }
                }
            }
        }
        /// <summary>
        /// 保存
        /// </summary>
        /// <param name="savePath"></param>
        public void Save(string savePath)
        {
            StringBuilder sqlBulider = new StringBuilder();
            sqlBulider.Append($"delete from P_SignLocationTable where mainId = '{VersionCode}';\r\n");
            using (FileStream fileStream = new FileStream(savePath, FileMode.Create, FileAccess.ReadWrite))
            {
                using (PdfReader reader = new PdfReader(this._currentPdf))
                {
                    PdfStamper stamper = new PdfStamper(reader, fileStream);
                    int readPageNum = reader.NumberOfPages;
                    for (int j = 0; j < readPageNum; j++)
                    {
                        double height = this.pdfDocument.Pages[j].Height;
                        float width = (float)this.pdfDocument.Pages[j].Width;
                        List<SignBox> signBoxes = this._signBoxList.Where(n => n.PageNumber == j + 1).ToList();
                        foreach (SignBox item in signBoxes)
                        {
                            using (Bitmap cloneBitmap = new Bitmap(item.ParentPicBox.Image))
                            {
                                iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(cloneBitmap, ImageFormat.Png);
                            }
                            PDFPageRotation rotation = this.pdfDocument.Pages[this.CurrentPageNo].Rotation;
                            int absoluteX = 0;
                            int absoluteY = 0;
                            int pdfImageWidth = 0;
                            int pdfImageHeight = 0;
                            if (rotation == PDFPageRotation.Rotate0Degrees)
                            {
                                PDFPoint pdfpoint = this.pdfPageView.ConvertScreenPointToPDFPoint(new Point(item.SignLeft, item.SignTop));
                                PDFPoint pdfpoint2 = this.pdfPageView.ConvertScreenPointToPDFPoint(new Point(item.SignLeft + item.SignWidth, item.SignTop + item.SignHeight));
                                absoluteX = (int)pdfpoint.X;
                                absoluteY = (int)pdfpoint2.Y;
                                pdfImageWidth = (int)(pdfpoint2.X - pdfpoint.X);
                                pdfImageHeight = (int)(pdfpoint.Y - pdfpoint2.Y);
                            }
                            else if (rotation == PDFPageRotation.Rotate90Degrees)
                            {
                                PDFPoint pdfpoint4 = this.pdfPageView.ConvertScreenPointToPDFPoint(new Point(item.SignLeft + item.SignWidth, item.SignTop));
                                PDFPoint pdfpoint5 = this.pdfPageView.ConvertScreenPointToPDFPoint(new Point(item.SignLeft, item.SignTop + item.SignHeight));
                                absoluteX = (int)pdfpoint5.Y;
                                absoluteY = (int)(width - (float)pdfpoint5.X);
                                pdfImageWidth = (int)(pdfpoint4.Y - pdfpoint5.Y);
                                pdfImageHeight = (int)(pdfpoint5.X - pdfpoint4.X);
                            }
                            PdfContentByte pdfContentByte = stamper.GetOverContent(j + 1);
                            sqlBulider.Append($"insert into P_SignLocationTable (mainId, stepCode, pageNum, absoluteY, absoluteX, pdfImageWidth, pdfImageHeight, pdfAdditionalUrl) values ('{VersionCode}', '{item.StepCode}', '{item.PageNumber}', '{absoluteY}', '{absoluteX}', '{pdfImageWidth}', '{pdfImageHeight}', '{item.pdfAdditionalUrl}');\r\n");
                        }
                    }
                    stamper.Close();
                }
            }
            SqlHelper.ExecuteNonQuery(sqlBulider.ToString());
        }
        /// <summary>
        /// 清理签名控件
        /// </summary>
        public void ClearSignBox()
        {
            foreach (SignBox signBox in _signBoxList)
            {
                if (signBox.ParentPicBox != null)
                {
                    signBox.ParentPicBox.Dispose();
                }
                if (signBox.ParentResizeControl != null)
                {
                    signBox.ParentResizeControl.Dispose();
                }
            }
            this._signBoxList.Clear();
        }
        /// <summary>
        /// 添加签名控件
        /// </summary>
        public void AddSignPicControl(string stepCode, String urlPath = "")
        {
            Bitmap image = new Bitmap(100, 50);

            string stepName = string.Empty;
            if (!String.IsNullOrEmpty(urlPath))
            {
                using (WebClient webClient = new WebClient())
                {
                    byte[] data = webClient.DownloadData(urlPath);
                    using (MemoryStream stream = new MemoryStream(data))
                    {
                        image = new Bitmap(stream);
                    }
                }
            }
            else
            {
                Graphics graphics = Graphics.FromImage(image);
                Pen pen = new Pen(Color.Black, 2);//
                graphics.DrawRectangle(pen, 0, 0, 100, 50);
                DataRow dataRow = StepTable.Rows.Cast<DataRow>().Where(n => (n["stepCode"] + "").Equals(stepCode)).FirstOrDefault();
                stepName = dataRow["stepName"] + "";
                graphics.DrawString(stepName, new System.Drawing.Font("微软雅黑", 26, FontStyle.Bold), Brushes.Green, new PointF(0, 0));
            }
            PictureBox pictureBox = new PictureBox();
            pictureBox.SizeMode = PictureBoxSizeMode.StretchImage;
            SignBox signBox = new SignBox(pdfPageView, pdfDocument.Pages[pdfPageView.PageNumber]);
            _signBoxList.Add(signBox);
            try
            {
                signBox.StepName = stepName;
                signBox.pdfAdditionalUrl = urlPath;
                signBox.StepCode = stepCode;
                signBox.ParentPicBox = pictureBox;
                signBox.PageNumber = this.CurrentPageNo + 1;
                if (string.IsNullOrEmpty(urlPath))
                {
                    signBox.SignHeight = 30;
                    signBox.SignWidth = 100;
                }
                else
                {
                    signBox.SignHeight = image.Height;
                    signBox.SignWidth = image.Width;

                }
                signBox.SignTop = 0;
                signBox.SignLeft = 0;
                pictureBox.BorderStyle = BorderStyle.None;
                pictureBox.Image = image;
                //pictureBox.Height = signHeight;
                //pictureBox.Width = signWidth;
                pictureBox.Tag = signBox;
                pictureBox.Parent = this.pdfPageView;
                pictureBox.SetMove();
                signBox.UpdateLocation();

                ContextMenuStrip cms = new ContextMenuStrip();
                cms.Items.Add("删除");
                cms.Items[0].Click += new EventHandler(OnItemClick);
                cms.Items[0].Tag = pictureBox;
                pictureBox.ContextMenuStrip = cms;
                //pictureBox.BringToFront();
                //pictureBox.Location = new Point(signLeft, signTop);
                //pictureBox.MouseDown += new MouseEventHandler(OnPictureBox_MouseDown);
                //pictureBox.MouseMove += new MouseEventHandler(OnPictureBox_MouseMove);
                //pictureBox.MouseUp += new MouseEventHandler(OnPictureBox_MouseUp);
                //pictureBox.MouseClick += new MouseEventHandler(OnPictureBox_MouseClick);
                //pictureBox.MouseLeave += new EventHandler(OnPictureBox_MouseLeave);
            }
            catch (Exception ex)
            {
                MessageUtil.Show(ex.Message);
                _signBoxList.Remove(signBox);
                pictureBox.Dispose();
            }
        }
        public iTextSharp.text.Image ToPdfImage(SignBox signBox, int pageIndex)
        {
            float width = (float)this.pdfDocument.Pages[pageIndex].Width;
            iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(signBox.ParentPicBox.Image, ImageFormat.Bmp);//获取图片
            PDFPageRotation rotation = this.pdfDocument.Pages[this.CurrentPageNo].Rotation;
            if (rotation == PDFPageRotation.Rotate0Degrees)
            {
                PDFPoint pdfpoint = this.pdfPageView.ConvertScreenPointToPDFPoint(new Point(signBox.SignLeft, signBox.SignTop));
                PDFPoint pdfpoint2 = this.pdfPageView.ConvertScreenPointToPDFPoint(new Point(signBox.SignLeft + signBox.SignWidth, signBox.SignTop + signBox.SignHeight));
                image.ScaleAbsolute((float)(pdfpoint2.X - pdfpoint.X), (float)(pdfpoint.Y - pdfpoint2.Y));
                image.SetAbsolutePosition((float)pdfpoint.X, (float)pdfpoint2.Y);
            }
            else if (rotation == PDFPageRotation.Rotate90Degrees)
            {
                PDFPoint pdfpoint4 = this.pdfPageView.ConvertScreenPointToPDFPoint(new Point(signBox.SignLeft + signBox.SignWidth, signBox.SignTop));
                PDFPoint pdfpoint5 = this.pdfPageView.ConvertScreenPointToPDFPoint(new Point(signBox.SignLeft, signBox.SignTop + signBox.SignHeight));
                image.ScaleAbsolute((float)(pdfpoint4.Y - pdfpoint5.Y), (float)(pdfpoint5.X - pdfpoint4.X));
                image.SetAbsolutePosition((float)pdfpoint5.Y, width - (float)pdfpoint5.X);
            }
            return image;
        }
        public SignBox ToSignBoxImage(SignBox signBox, int pageIndex, double absoluteX, double absoluteY, double pdfImageWidth, double pdfImageHeight)
        {
            float width = (float)this.pdfDocument.Pages[pageIndex].Width;
            PDFPageRotation rotation = this.pdfDocument.Pages[this.CurrentPageNo].Rotation;
            if (rotation == PDFPageRotation.Rotate0Degrees)
            {
                PDFPoint pdfpoint = new PDFPoint(absoluteX, pdfImageHeight + absoluteY);
                PDFPoint pdfpoint2 = new PDFPoint(pdfImageWidth + absoluteX, absoluteY);
                Point point = this.pdfPageView.ConvertPDFPointToScreenPoint(pdfpoint);
                Point point2 = this.pdfPageView.ConvertPDFPointToScreenPoint(pdfpoint2);
                signBox.SignLeft = point.X;
                signBox.SignTop = point.Y;
                signBox.SignWidth = point2.X - signBox.SignLeft;
                signBox.SignHeight = point2.Y - signBox.SignTop;
            }
            else if (rotation == PDFPageRotation.Rotate90Degrees)
            {
                PDFPoint pdfpoint4 = new PDFPoint(width - absoluteY - pdfImageHeight, pdfImageWidth + absoluteX);
                PDFPoint pdfpoint5 = new PDFPoint(width - absoluteY, absoluteX);
                Point point4 = this.pdfPageView.ConvertPDFPointToScreenPoint(pdfpoint4);
                Point point5 = this.pdfPageView.ConvertPDFPointToScreenPoint(pdfpoint5);
                signBox.SignLeft = point5.X;
                signBox.SignTop = point4.Y;
                signBox.SignWidth = point4.X - signBox.SignLeft;
                signBox.SignHeight = point5.Y - signBox.SignTop;
            }
            return signBox;
        }
        /// <summary>
        /// 关闭文档
        /// </summary>
        public void CloseDocument()
        {
            this.pdfDocument.Close();
            this.pdfDocument.Dispose();
        }
        #endregion
    }
}