PDFOffice_Windows_exe/PDF Office/ViewModels/Tools/AnnotToolContentViewModel.Command.cs

using ComPDFKit.Import;
using ComPDFKit.PDFAnnotation;
using ComPDFKit.PDFDocument;
using ComPDFKit.PDFDocument.Action;
using ComPDFKitViewer;
using ComPDFKitViewer.AnnotEvent;
using ComPDFKitViewer.PdfViewer;
using PDF_Master.CustomControl;
using PDF_Master.EventAggregators;
using PDF_Master.Helper;
using PDF_Master.Model.AnnotPanel;
using PDF_Master.Properties;
using PDF_Master.ViewModels.BOTA;
using PDF_Master.ViewModels.Tools.AnnotManager;
using PDF_Master.Views.BOTA;
using PDFSettings;
using Prism.Mvvm;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Input;
using System.Windows.Media;

namespace PDF_Master.ViewModels.Tools
{
    public sealed partial class AnnotToolContentViewModel : BindableBase, INavigationAware
    {
        #region 事件绑定和解绑

        private void BindingEvent()
        {
            //属性面板与注释工具栏绑定：属性面板的属性变化，会同步注释工具栏的属性值
            //比如在属性面板里更改注释颜色，会同时更新工具栏对应的工具颜色
            propertyPanel.DataChanged -= AnnotPropertyPanel_DataChanged;
            propertyPanel.DataChanged += AnnotPropertyPanel_DataChanged;
            propertyPanel.AnnotTypeChanged -= AnnotPropertyPanel_AnnotTypeChanged;
            propertyPanel.AnnotTypeChanged += AnnotPropertyPanel_AnnotTypeChanged;
            //快捷键
            KeyEventsHelper.KeyDown -= ShortCut_KeyDown;
            KeyEventsHelper.KeyDown += ShortCut_KeyDown;
        }

        private void UnBindingEvent()
        {
            propertyPanel.DataChanged -= AnnotPropertyPanel_DataChanged;
            propertyPanel.AnnotTypeChanged -= AnnotPropertyPanel_AnnotTypeChanged;
            //快捷盘解绑
            KeyEventsHelper.KeyDown -= ShortCut_KeyDown;
        }

        private void BindingPDFViewerHandler()
        {
            //来自PDFViewer的响应事件
            if (PDFViewer != null)
            {
                PDFViewer.AnnotEditHandler -= PDFViewer_AnnotEditHandler;
                PDFViewer.AnnotEditHandler += PDFViewer_AnnotEditHandler;

                PDFViewer.AnnotActiveHandler -= PDFViewer_AnnotActiveHandler;
                PDFViewer.AnnotActiveHandler += PDFViewer_AnnotActiveHandler;

                PDFViewer.AnnotCommandHandler -= PDFViewer_AnnotCommandHandler;
                PDFViewer.AnnotCommandHandler += PDFViewer_AnnotCommandHandler;

                PDFViewer.SnapshotCommandHandler -= PDFViewer_SnapshotCommandHandler;
                PDFViewer.SnapshotCommandHandler += PDFViewer_SnapshotCommandHandler;

                PDFViewer.PDFActionHandler -= PDFViewer_PDFActionHandler;
                PDFViewer.PDFActionHandler += PDFViewer_PDFActionHandler;
                PDFViewer.AnnotHoverHandler -= PDFViewer_AnnotHoverHandler;
                PDFViewer.AnnotHoverHandler += PDFViewer_AnnotHoverHandler;

                PDFViewer.PreviewMouseLeftButtonDown -= PDFViewer_PreviewMouseLeftButtonDown;
                PDFViewer.PreviewMouseLeftButtonDown += PDFViewer_PreviewMouseLeftButtonDown;
            }
        }

        private void UnBindingPDFViewerHandler()
        {
            if (PDFViewer != null)
            {
                PDFViewer.AnnotEditHandler -= PDFViewer_AnnotEditHandler;
                PDFViewer.AnnotActiveHandler -= PDFViewer_AnnotActiveHandler;
                PDFViewer.AnnotCommandHandler -= PDFViewer_AnnotCommandHandler;
                PDFViewer.SnapshotCommandHandler -= PDFViewer_SnapshotCommandHandler;
                PDFViewer.PDFActionHandler -= PDFViewer_PDFActionHandler;
                PDFViewer.AnnotHoverHandler -= PDFViewer_AnnotHoverHandler;

                PDFViewer.PreviewMouseLeftButtonDown -= PDFViewer_PreviewMouseLeftButtonDown;
            }
        }

        #endregion 事件绑定和解绑

        #region 与触发事件调用相关的函数

        //鼠标左键双击注释
        private void PDFViewer_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            if (e.ClickCount == 1)
            {
                //if (sender is CPDFViewer pDFViewer)
                //{
                //    if (pDFViewer.ToolManager.CurrentAnnotArgs != null)
                //    {
                //        if (pDFViewer.ToolManager.CurrentAnnotArgs is FreehandAnnotArgs freehand)
                //        {
                //            PDFViewer.SelectAnnotation(freehand.PageIndex, freehand.AnnotIndex);
                //        }
                //    }
                //}
                bool isTabItemAnnotation = IsBOTATabItemShow(out BOTAContentViewModel bOTAContentViewModel, out BOTAContent bOTAContent, "TabItemBookMark");

                if (viewContentViewModel.OpenBOTA == true && isTabItemAnnotation == true && bOTAContent.TabItemBookMark.IsSelected == true)
                {
                    this.events.GetEvent<CleanSelectAllEvent>().Publish(new CleanSelectAllArgs() { Unicode = App.mainWindowViewModel.SelectedItem.Unicode, IsCleanSelectAll = true });
                }
            }
            if (e.ClickCount == 2)
            {
                if (CurrentSelectedAnnot != null)
                {
                    var type = CurrentSelectedAnnot.EventType;
                    if (type != AnnotArgsType.AnnotSticky && type != AnnotArgsType.AnnotFreeText &&
                        type != AnnotArgsType.AnnotHighlight && type != AnnotArgsType.AnnotUnderline && type != AnnotArgsType.AnnotStrikeout)
                    {
                        int dpi = DpiHelpers.Dpi;
                        var rect = CurrentSelectedAnnot.ClientRect;
                        rect = new Rect(
                            rect.Left * PDFViewer.ZoomFactor,
                            rect.Top * PDFViewer.ZoomFactor,
                            rect.Width * PDFViewer.ZoomFactor,
                            rect.Height * PDFViewer.ZoomFactor);
                        var ui = PDFViewer.Parent as ContentControl;
                        if (ui != null)
                        {
                            var point = e.GetPosition(ui);
                            int pageIndex = 0;
                            Point pagePoint = new Point(0, 0);
                            //Todo:等黎总需要更新ComPDFKit.dll
                            //PDFViewer.ConvertViewPointToPage(point, out pageIndex, out pagePoint);
                            if (pagePoint.X >= rect.Left && pagePoint.X <= rect.Right && pagePoint.Y >= rect.Top && pagePoint.Y <= rect.Bottom)
                                PopAnnotNoteText(CurrentSelectedAnnot);
                        }
                    }

                    if (type == AnnotArgsType.AnnotSticky)
                    {
                        (CurrentSelectedAnnot as StickyAnnotArgs).PopupEditWnd();
                    }
                }
            }
        }

        //超链接跳转
        private void PDFViewer_PDFActionHandler(object sender, ComPDFKit.PDFDocument.Action.CPDFAction action)
        {
            if (action == null)
            {
                return;
            }
            switch (action.ActionType)
            {
                case C_ACTION_TYPE.ACTION_TYPE_GOTO:
                    if (PDFViewer != null)
                    {
                        CPDFGoToAction gotoAction = action as CPDFGoToAction;
                        CPDFDestination dest = gotoAction.GetDestination(PDFViewer.Document);
                        if (dest != null)
                        {
                            PDFViewer.GoToPage(dest.PageIndex, new System.Windows.Point(0, 0));
                        }
                    }
                    break;

                case C_ACTION_TYPE.ACTION_TYPE_URI:
                    {
                        CPDFUriAction uriAction = action as CPDFUriAction;
                        string uri = uriAction.GetUri();
                        try
                        {
                            if (!string.IsNullOrEmpty(uri))
                            {
                                Process.Start(uri);
                            }
                        }
                        catch (Exception ex)
                        {
                        }
                    }
                    break;
            }
        }

        private void GetSelectedAnnots(AnnotAttribEvent e)
        {
            var annot = e.AnnotItemsList[0];
            switch (annot.EventType)
            {
                case AnnotArgsType.AnnotHighlight:
                    GetHighLight(e.AnnotItemsList);
                    break;

                case AnnotArgsType.AnnotUnderline:
                    GetUnderLine(e.AnnotItemsList);
                    break;

                case AnnotArgsType.AnnotStrikeout:
                    GetStrikeout(e.AnnotItemsList);
                    break;

                case AnnotArgsType.AnnotSquiggly:
                    GetSquiggly(e.AnnotItemsList);
                    break;

                case AnnotArgsType.AnnotFreehand:
                    GetFreehand(e.AnnotItemsList);
                    break;

                case AnnotArgsType.AnnotFreeText:
                    GetFreetext(e.AnnotItemsList);
                    break;

                case AnnotArgsType.AnnotSquare:
                    GetRect(e.AnnotItemsList);
                    break;

                case AnnotArgsType.AnnotCircle:
                    GetCircle(e.AnnotItemsList);
                    break;

                case AnnotArgsType.AnnotLine:
                    bool isLine = true;
                    if (e.Attribs.ContainsKey(AnnotAttrib.LineStart))
                    {
                        if ((C_LINE_TYPE)e.Attribs[AnnotAttrib.LineStart] != C_LINE_TYPE.LINETYPE_UNKNOWN && (C_LINE_TYPE)e.Attribs[AnnotAttrib.LineStart] != C_LINE_TYPE.LINETYPE_NONE)
                        {
                            isLine = false;
                        }
                    }
                    if (e.Attribs.ContainsKey(AnnotAttrib.LineEnd))
                    {
                        if ((C_LINE_TYPE)e.Attribs[AnnotAttrib.LineEnd] != C_LINE_TYPE.LINETYPE_UNKNOWN && (C_LINE_TYPE)e.Attribs[AnnotAttrib.LineEnd] != C_LINE_TYPE.LINETYPE_NONE)
                        {
                            isLine = false;
                        }
                    }

                    if (isLine)
                        GetArrowLine("Line", e.AnnotItemsList);
                    else
                        GetArrowLine("Arrow", e.AnnotItemsList);

                    break;

                case AnnotArgsType.AnnotLink:
                    //viewContentViewModel.IsCreateLink = false;
                    //e.IsAnnotCreateReset= true;

                    if (StrAnnotToolChecked == "Link")
                    {
                        propertyPanel.IsAddLink = false;
                    }

                    GetLink(e.AnnotItemsList, e);
                    break;

                case AnnotArgsType.AnnotSticky:
                    GetStickyNote(e.AnnotItemsList);
                    customStickyPopup.GetCurrentAnnot = e.AnnotItemsList[0] as StickyAnnotArgs;
                    customStickyPopup.GetPDFViewer = PDFViewer;
                    break;

                case AnnotArgsType.AnnotStamp:
                    GetStamp();
                    break;
            }
        }

        private void SelectedSignature(List<AnnotHandlerEventArgs> annotlist)
        {
            if (annotlist == null || annotlist.Count == 0)
                return;

            var annot = annotlist[0];

            if (annot.EventType != AnnotArgsType.AnnotStamp && annot.EventType != AnnotArgsType.AnnotFreehand)
                return;
            if (annot.PageIndex < 0 || annot.AnnotIndex < 0)
                return;

            var signAnnot = viewContentViewModel.AnnotSignatures.FirstOrDefault(temp => temp.Item1 == annot.PageIndex && temp.Item2 == annot.AnnotIndex);
            if (signAnnot == null)
            {
                if (annot.EventType == AnnotArgsType.AnnotStamp)
                {
                    StrAnnotToolChecked = "Stamp";
                }
                //else
                //{
                //    StrAnnotToolChecked = "";
                //}
            }
            else
            {
                GetSignature();
                StrAnnotToolChecked = "Signature";
            }
        }

        private void AddAnnotSignature(AnnotHandlerEventArgs annot)
        {
            if ((annot.EventType != AnnotArgsType.AnnotStamp && annot.EventType != AnnotArgsType.AnnotFreehand) ||
            (annot.PageIndex < 0 || annot.AnnotIndex < 0)) return;

            if (StrAnnotToolChecked == "Signature")
            {
                if (viewContentViewModel.AnnotSignatures == null)
                    viewContentViewModel.AnnotSignatures = new List<Tuple<int, int>>();

                var signAnnot = viewContentViewModel.AnnotSignatures.FirstOrDefault(temp => temp.Item1 == annot.PageIndex && temp.Item2 == annot.AnnotIndex);
                if (signAnnot == null)
                {
                    viewContentViewModel.AnnotSignatures.Add(new Tuple<int, int>(annot.PageIndex, annot.AnnotIndex));
                }
            }
        }

        #endregion 与触发事件调用相关的函数

        #region PDFViewer事件

        private AnnotHandlerEventArgs CurrentSelectedAnnot = null;

        //选中和非选中注释
        private void PDFViewer_AnnotActiveHandler(object sender, AnnotAttribEvent e)
        {
            if (e != null)
            {
                if (e.IsMouseRightActive)
                {
                    ShowPropertyPanel(false);
                    return;
                }
                CurrentSelectedAnnot = null;
                var annot = e.AnnotItemsList[0];
                if (annot != null)
                {
                    if (e.AnnotItemsList.Count == 1)
                    {
                        //IsAnnotCreateReset：是否为创建注释的状态
                        if (e.IsAnnotCreateReset == false)
                        {
                            GetSelectedAnnots(e);
                            SelectedSignature(e.AnnotItemsList);
                            CurrentSelectedAnnot = annot;

                            if (Settings.Default.AppProperties.InitialVIew.AutoExpandProperty
                                && annot.EventType != AnnotArgsType.AnnotStamp && StrAnnotToolChecked != "Signature"
                                && annot.EventType != AnnotArgsType.AnnotLink)
                                ShowPropertyPanel(true);
                        }
                        else
                        {
                            switch (annot.EventType)
                            {
                                case AnnotArgsType.AnnotFreeText:
                                    annot = GetFreetext(e.AnnotItemsList);
                                    PDFViewer.SetToolParam(annot);
                                    break;

                                case AnnotArgsType.AnnotSticky:
                                    customStickyPopup.GetCurrentAnnot = e.AnnotItemsList[0] as StickyAnnotArgs;
                                    customStickyPopup.GetPDFViewer = PDFViewer;
                                    propertyPanel.annot = e.AnnotItemsList[0];
                                    var AnnotEvent = AnnotAttribEvent.GetAnnotAttribEvent(annot, annot.GetAnnotAttrib());
                                    propertyPanel.AnnotEvents = null;
                                    propertyPanel.AnnotEvent = AnnotEvent;
                                    propertyPanel.annotlists = e.AnnotItemsList;
                                    break;

                                case AnnotArgsType.AnnotLink:
                                    //viewContentViewModel.IsCreateLink = false;
                                    GetLink(e.AnnotItemsList, e);
                                    PDFViewer.SetToolParam(annot);
                                    break;
                            }
                            //GetSelectedAnnots(e);
                            //PDFViewer.SetToolParam(annot);

                            #region //TODO: 修改注释后，会作用到之后添加的注释中。因此先把此逻辑“创建注释后，会自动回到默认值”注释掉

                            //注释代码原因：设计已经重新调整逻辑：所有注释创建后，编辑属性，所有属性会作用于下次创建的注释中。
                            //if (annot.EventType != AnnotArgsType.AnnotStrikeout &&
                            //annot.EventType != AnnotArgsType.AnnotUnderline &&
                            //annot.EventType != AnnotArgsType.AnnotHighlight &&
                            //annot.EventType != AnnotArgsType.AnnotSquiggly &&
                            //annot.EventType != AnnotArgsType.AnnotLink &&
                            //annot.EventType != AnnotArgsType.AnnotFreehand &&
                            //annot.EventType != AnnotArgsType.AnnotSticky &&
                            //)
                            //{
                            //    if (ToolExpandDict.ContainsValue(e.AnnotItemsList[0].EventType))
                            //    {
                            //        var strLineAnnotTag = "";
                            //        if (e.AnnotItemsList[0] is LineAnnotArgs)
                            //        {
                            //            var lineAnnot = e.AnnotItemsList[0] as LineAnnotArgs;
                            //            if (lineAnnot.HeadLineType == C_LINE_TYPE.LINETYPE_NONE && lineAnnot.TailLineType == C_LINE_TYPE.LINETYPE_NONE)
                            //            {
                            //                strLineAnnotTag = "Line";
                            //            }
                            //            else
                            //            {
                            //                strLineAnnotTag = "Arrow";
                            //            }
                            //        }

                            //        foreach (var item in ToolExpandDict)
                            //        {
                            //            if (item.Value == e.AnnotItemsList[0].EventType)
                            //            {
                            //                annot = null;//新建注释时，回到默认值
                            //                if (string.IsNullOrEmpty(strLineAnnotTag))
                            //                {
                            //                    FindAnnotTypeKey(item.Key, ref annot);
                            //                    break;
                            //                }
                            //                else
                            //                {
                            //                    if (strLineAnnotTag == item.Key)
                            //                    {
                            //                        FindAnnotTypeKey(item.Key, ref annot);
                            //                        break;
                            //                    }
                            //                }
                            //            }
                            //        }

                            //        PDFViewer.SetToolParam(annot);
                            //    }
                            //}

                            //设计重新调整，阅读页空白处，右键菜单，添加链接需要显示，其他和pro mac一样的效果，不显示属性栏
                            //if (isRightMenuAddAnnot && annot.EventType!=AnnotArgsType.AnnotLink)
                            //{
                            //    ShowPropertyPanel(false);
                            //}
                            //else
                            //{
                            //    ShowPropertyPanel();
                            //}

                            #endregion //TODO: 修改注释后，会作用到之后添加的注释中。因此先把此逻辑“创建注释后，会自动回到默认值”注释掉
                        }
                    }
                    else
                    {
                        bool isDifferentAnnotTyle = AnnotTransfer.IsDifferentTypeAnnots(e.AnnotItemsList);

                        if (isDifferentAnnotTyle)
                            viewContentViewModel.SelectedPrpoertyPanel("PropertyPanelContent", null);
                        else
                            GetSelectedAnnots(e);
                    }
                }

                //注释列表同步选中
                var list = e.GetPageAnnotsIndex();
                bool isTabItemAnnotation = IsBOTATabItemShow(out BOTAContentViewModel bOTAContentViewModel, out BOTAContent bOTAContent, "TabItemAnnotation");

                if (viewContentViewModel.OpenBOTA == true && isTabItemAnnotation == true && bOTAContent.TabItemAnnotation.IsSelected == true && list != null && list.Count > 0)
                {
                    if (list.Keys.Count == 0)
                    {
                        return;
                    }
                    var pageindex = new List<int>(list.Keys);
                    List<int> annotes = new List<int>();
                    list.TryGetValue(pageindex[0], out annotes);
                    int annoteindex = annotes[0];
                    AnnotationContentViewModel viewModel = GetAnnotationContentViewModel(bOTAContentViewModel, out AnnotationContent annotation);

                    if (viewModel != null)
                    {
                        viewModel.ScrollToAnnot(pageindex[0], annoteindex, annotation.AnnotationList);
                    }
                }
            }
            else
            {
                if (StrAnnotToolChecked == "Link")
                {
                    if (PDFViewer.MouseMode != MouseModes.AnnotCreate)
                    {
                        if (PDFViewer.MouseMode == MouseModes.PanTool && propertyPanel.IsAddLink == false && propertyPanel.IsLocationLink == false)
                        {
                            viewContentViewModel.SelectedPrpoertyPanel("PropertyPanelContent", null);
                        }
                    }
                    else
                    {
                        if (propertyPanel.IsMultiSelected)
                            viewContentViewModel.SelectedPrpoertyPanel("PropertyPanelContent", null);
                    }
                }
            }
        }

        //在注释工具的状态下，右键菜单
        private void PDFViewer_AnnotCommandHandler(object sender, AnnotCommandArgs e)
        {
            if (e.AnnotEventArgsList == null || (PDFViewer != null && PDFViewer.MouseMode == MouseModes.FormEditTool))
                return;

            if ((UIElement)sender != null)
            {
                //绑定命令执行前的拦截事件，对于未解密权限的文档进行复制限制
                CommandManager.AddPreviewExecutedHandler((UIElement)sender, PreviewExcute);
            }

            switch (e.CommandType)
            {
                case CommandType.Context:
                    if (e.AnnotEventArgsList.Count > 0)
                    {
                        if (App.mainWindowViewModel.SelectedItem.IsInReadctonMode && e.AnnotEventArgsList[0].EventType == AnnotArgsType.AnnotRedaction)
                        {
                            //绑定标记密文处右键菜单
                            events.GetEvent<RedactionCommandEvent>().Publish(new RedactionCommandEventArgs() { UniCode = App.mainWindowViewModel.SelectedItem.Unicode, Sender = sender, args = e });
                        }
                        else
                        {
                            if (e.AnnotEventArgsList.Count == 1)
                            {
                                var selectedAnnot = e.AnnotEventArgsList[0];
                                PopMenuCheckedLineDash(selectedAnnot);
                                PopMenuCheckedFontFamily(selectedAnnot);
                                PopMenuCheckedTextAglin(selectedAnnot);

                                switch (selectedAnnot.EventType)
                                {
                                    case AnnotArgsType.AnnotHighlight:
                                    case AnnotArgsType.AnnotUnderline:
                                    case AnnotArgsType.AnnotStrikeout:
                                    case AnnotArgsType.AnnotSquiggly:
                                        if (selectedAnnot.EventType == AnnotArgsType.AnnotHighlight)
                                        {
                                            colorContent.ItemSource = AnnotColorList.GetColorList(ColorSelectorType.Highlight);
                                        }
                                        else
                                        {
                                            colorContent.ItemSource = AnnotColorList.GetColorList(ColorSelectorType.Border);
                                        }

                                        e.PopupMenu = HightAnnotPopMenu.OpenMenu(selectedAnnot, sender);
                                        break;

                                    case AnnotArgsType.AnnotFreehand:
                                        e.PopupMenu = FreeHandAnnotPopMenu.OpenMenu(selectedAnnot, sender);
                                        break;

                                    case AnnotArgsType.AnnotFreeText:
                                        e.PopupMenu = FreeTextAnnotPopMenu.OpenMenu(selectedAnnot, sender);
                                        break;

                                    case AnnotArgsType.AnnotSticky:
                                        e.PopupMenu = StrickNoteAnnotPopMenu.OpenMenu(selectedAnnot, sender);
                                        break;

                                    case AnnotArgsType.AnnotSquare:
                                    case AnnotArgsType.AnnotCircle:
                                        ShapeAnnotPopMenu.SetVisual("ShapeDirect", false);
                                        ShapeAnnotPopMenu.SetVisual("ShapeFillColor", true);
                                        e.PopupMenu = ShapeAnnotPopMenu.OpenMenu(selectedAnnot, sender);
                                        break;

                                    case AnnotArgsType.AnnotLine:
                                        ShapeAnnotPopMenu.SetVisual("ShapeFillColor", false);
                                        ShapeAnnotPopMenu.SetVisual("ShapeDirect", true);
                                        e.PopupMenu = ShapeAnnotPopMenu.OpenMenu(selectedAnnot, sender);
                                        break;

                                    case AnnotArgsType.AnnotLink:
                                        e.PopupMenu = LinkAnnotPopMenu.OpenMenu(selectedAnnot, sender);
                                        break;

                                    case AnnotArgsType.AnnotStamp:
                                        e.PopupMenu = StampAnnotPopMenu.OpenMenu(selectedAnnot, sender);
                                        break;
                                }
                            }
                            else
                            {
                                bool isHigh = true;//是否为高亮
                                foreach (var item in e.AnnotEventArgsList)
                                {
                                    if (AnnotTransfer.IsHightAnnot(item) == false)
                                    {
                                        isHigh = false;
                                        break;
                                    }
                                }

                                MultiAnnotPopMenu.SetVisual("MultiCopy", !isHigh);
                                MultiAnnotPopMenu.SetVisual("MultiCut", !isHigh);
                                e.PopupMenu = MultiAnnotPopMenu.OpenMenu(e.AnnotEventArgsList, sender);
                            }
                        }
                        if (e.PopupMenu != null)
                        {
                            e.Handle = true;
                        }
                    }
                    else
                    {
                        if (e.PressOnSelectedText || e.CommandTarget == TargetType.ImageSelection)
                        {
                            e.PopupMenu = SelectedTextOrImageContextMenu(sender, e);
                            if (e.PopupMenu != null)
                            {
                                e.Handle = true;
                            }
                        }
                        else
                        {
                            e.PopupMenu = ViewerContextMenu(sender);
                            if (e.PopupMenu != null)
                            {
                                e.Handle = true;
                            }
                        }
                    }
                    break;
            }
        }

        private void PreviewExcute(object sender, ExecutedRoutedEventArgs e)
        {
            if (e.Command == ApplicationCommands.Copy)
            {
                VerifyPasswordResult result = SecurityHelper.VerifyPasswordForSelectedPermissions(PDFViewer.Document, Model.Dialog.ToolsDialogs.SaftyDialogs.EnumPermissionsSet.StatusAllowsCopying, dialogs);
                if (result.IsDiscryptied)
                {
                    if (result.Password != null)
                    {
                        string filePath = PDFViewer.Document.FilePath;
                        var unlockresult = PDFViewer.Document.CheckOwnerPassword(result.Password);
                    }
                }
                else
                {
                    e.Handled = true;
                }
            }
        }

        //右键菜单，选中字体样式按钮状态
        private void PopMenuCheckedFontFamily(AnnotHandlerEventArgs annot)
        {
            if (annot != null)
            {
                if (annot.EventType == AnnotArgsType.AnnotFreeText)
                {
                    var freeText = annot as FreeTextAnnotArgs;
                    FreeTextAnnotPopMenu.SetIsChecked(freeText.FontFamily.ToString(), true);
                }
            }
        }

        //右键菜单，选中文本内容对齐按钮状态
        private void PopMenuCheckedTextAglin(AnnotHandlerEventArgs annot)
        {
            if (annot != null)
            {
                if (annot.EventType == AnnotArgsType.AnnotFreeText)
                {
                    var freeText = annot as FreeTextAnnotArgs;
                    switch (freeText.Align)
                    {
                        case TextAlignment.Left:
                            FreeTextAnnotPopMenu.SetIsChecked("FreeTextAglinLeft", true);
                            break;

                        case TextAlignment.Center:
                            FreeTextAnnotPopMenu.SetIsChecked("FreeTextAglinCenter", true);
                            break;

                        case TextAlignment.Right:
                            FreeTextAnnotPopMenu.SetIsChecked("FreeTextAglinRight", true);
                            break;

                        case TextAlignment.Justify:
                            FreeTextAnnotPopMenu.SetIsChecked("FreeTextAglinJustify", true);
                            break;

                        default:
                            FreeTextAnnotPopMenu.SetIsChecked("FreeTextAglinLeft", false);
                            FreeTextAnnotPopMenu.SetIsChecked("FreeTextAglinCenter", false);
                            FreeTextAnnotPopMenu.SetIsChecked("FreeTextAglinRight", false);
                            FreeTextAnnotPopMenu.SetIsChecked("FreeTextAglinJustify", false);
                            break;
                    }
                }
            }
        }

        //右键菜单，选中虚实线按钮状态
        private void PopMenuCheckedLineDash(AnnotHandlerEventArgs annot)
        {
            if (annot != null)
            {
                bool isSolidLineDash = true;
                if (annot.EventType == AnnotArgsType.AnnotFreehand)
                {
                    var freeHand = annot as FreehandAnnotArgs;
                    isSolidLineDash = AnnotTransfer.IsSolidStyle(freeHand.LineDash);
                    FreeHandAnnotPopMenu.SetIsChecked(isSolidLineDash ? "FreeHandSolid" : "FreeHandDash", true);
                }
                else if (annot.EventType == AnnotArgsType.AnnotSquare)
                {
                    var square = annot as SquareAnnotArgs;
                    isSolidLineDash = AnnotTransfer.IsSolidStyle(square.LineDash);
                    ShapeAnnotPopMenu.SetIsChecked(isSolidLineDash ? "ShapeSolid" : "ShapeDash", true);
                }
                else if (annot.EventType == AnnotArgsType.AnnotCircle)
                {
                    var circle = annot as CircleAnnotArgs;
                    isSolidLineDash = AnnotTransfer.IsSolidStyle(circle.LineDash);
                    ShapeAnnotPopMenu.SetIsChecked(isSolidLineDash ? "ShapeSolid" : "ShapeDash", true);
                }
                else if (annot.EventType == AnnotArgsType.AnnotLine)
                {
                    var line = annot as LineAnnotArgs;
                    isSolidLineDash = AnnotTransfer.IsSolidStyle(line.LineDash);
                    ShapeAnnotPopMenu.SetIsChecked(isSolidLineDash ? "ShapeSolid" : "ShapeDash", true);
                }
            }
        }

        /// <summary>
        /// 内容选择工具
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PDFViewer_SnapshotCommandHandler(object sender, SnapshotCommandArgs e)
        {
            SnapshotEditToolArgs snapToolArgs = (SnapshotEditToolArgs)PDFViewer.ToolManager.CurrentAnnotArgs;

            SnapshotEditMenuViewModel.SnapToolArgs = snapToolArgs;
            SnapshotEditMenuViewModel.PDFViewer = PDFViewer;
            SnapshotEditMenuViewModel.SnapToolEvent -= SnapshotEditMenuViewModel_SnapToolEvent; ;
            SnapshotEditMenuViewModel.SnapToolEvent += SnapshotEditMenuViewModel_SnapToolEvent;
            var popMenu = App.Current.FindResource("SnapshotContextMenu") as ContextMenu;

            if (e.HitSnapshotTool && e.SnapshotRect.Width > 0 && e.SnapshotRect.Height > 0)
            {
                e.PopupMenu = popMenu;
                e.Handle = true;

                if (popMenu != null && popMenu.Items.Count == 5)
                {
                    //复制
                    MenuItem menuItem = popMenu.Items[0] as MenuItem;
                    menuItem.CommandTarget = PDFViewer;
                    menuItem.Command = SnapshotEditMenuViewModel.SnapCopyCommand;
                    //导出
                    menuItem = popMenu.Items[1] as MenuItem;
                    menuItem.CommandTarget = PDFViewer;
                    if (menuItem.Items.Count == 3)
                    {
                        MenuItem menuItem1 = menuItem.Items[0] as MenuItem;
                        menuItem1.CommandTarget = PDFViewer;
                        menuItem1.Command = SnapshotEditMenuViewModel.ExportPNGCommand;

                        menuItem1 = menuItem.Items[1] as MenuItem;
                        menuItem1.CommandTarget = PDFViewer;
                        menuItem1.Command = SnapshotEditMenuViewModel.ExportJPGCommand;

                        menuItem1 = menuItem.Items[2] as MenuItem;
                        menuItem1.CommandTarget = PDFViewer;
                        menuItem1.Command = SnapshotEditMenuViewModel.ExportPDFCommand;
                    }

                    //裁剪
                    menuItem = popMenu.Items[2] as MenuItem;
                    menuItem.CommandTarget = PDFViewer;
                    menuItem.Command = SnapshotEditMenuViewModel.CroppingCommand;

                    //缩放至所选区域
                    menuItem = popMenu.Items[3] as MenuItem;
                    menuItem.CommandTarget = PDFViewer;
                    menuItem.Visibility = Visibility.Collapsed;
                    //menuItem.Command = snapshotEditMenuViewModel.CroppingCommand;

                    //打印
                    menuItem = popMenu.Items[4] as MenuItem;
                    menuItem.CommandTarget = PDFViewer;
                    menuItem.Command = SnapshotEditMenuViewModel.PrintCommand;
                }
            }
        }

        private void SnapshotEditMenuViewModel_SnapToolEvent(object sender, KeyValuePair<string, object> e)
        {
            switch (e.Key)
            {
                case "CloseSnap":
                    {
                        #region to do

                        //var item = PDFViewerTab.SelectedItem as TabItem;
                        //if (item == null)
                        //{
                        //    ClearSelectedToolPanel();
                        //    return;
                        //}
                        //Grid grid = item.Content as Grid;
                        //if (grid == null || grid.Children.Count == 0)
                        //{
                        //    ClearSelectedToolPanel();
                        //    return;
                        //}
                        //PDFViewerCtrl pdfViewer = grid.Children[0] as PDFViewerCtrl;
                        //if (pdfViewer == null)
                        //{
                        //    ClearSelectedToolPanel();
                        //    return;
                        //}

                        #endregion to do

                        switch (PDFViewer.MouseMode)
                        {
                            case MouseModes.SelectTextTool:
                                break;

                            default:
                                BtnSelecttoolIsChecked = false;
                                BtnHandIsChecked = true;
                                PDFViewer.EnableZoom(true);
                                PDFViewer.EnableScroll(true);

                                break;
                        }
                    }
                    break;

                default:
                    break;
            }
        }

        private void PDFViewer_AnnotEditHandler(object sender, List<AnnotEditEvent> e)
        {
            if (e != null && e.Count > 0)
            {
                MultipleSelectionAnnot(e);

                for (int i = 0; i < e.Count; i++)
                {
                    AnnotEditEvent editEvent = e[i];
                    switch (editEvent.EditAction)
                    {
                        case ActionType.Add:

                            //if (editEvent.EditAnnotArgs is StickyAnnotArgs stickyAnnotArgs)
                            //{
                            //    PDFViewer.SelectAnnotation(stickyAnnotArgs.PageIndex, stickyAnnotArgs.AnnotIndex);
                            //}
                            //if (editEvent.EditAnnotArgs is FreeTextAnnotArgs freeTextAnnotArgs)
                            //{
                            //    PDFViewer.SelectAnnotation(freeTextAnnotArgs.PageIndex, freeTextAnnotArgs.AnnotIndex);
                            //}
                            //BOTA
                            bool isTabItemAnnotation = IsBOTATabItemShow(out BOTAContentViewModel bOTAContentViewModel, out BOTAContent bOTAContent, "TabItemAnnotation");

                            if (viewContentViewModel.OpenBOTA == true && isTabItemAnnotation == true)
                            {
                                AnnotationContentViewModel viewModel = GetAnnotationContentViewModel(bOTAContentViewModel, out AnnotationContent annotation);

                                if (viewModel != null)
                                {
                                    int pageindex = editEvent.PageIndex;
                                    int annotindex = editEvent.AnnotIndex;
                                    viewModel.UpdateAddedAnnot(pageindex, annotindex);
                                }
                            }

                            //添加书签注释，用于未保存前跟图章手绘注释的区分
                            if (StrAnnotToolChecked == "Signature")
                            {
                                AddAnnotSignature(editEvent.EditAnnotArgs);
                            }

                            //if (editEvent.EditAnnotArgs.EventType == AnnotArgsType.AnnotFreeText)
                            //{
                            //    (editEvent.EditAnnotArgs as FreeTextAnnotArgs).LineWidth = 0;
                            //}

                            break;

                        case ActionType.Del:
                            isTabItemAnnotation = IsBOTATabItemShow(out bOTAContentViewModel, out bOTAContent, "TabItemAnnotation");
                            if (isTabItemAnnotation)
                            {
                                AnnotationContentViewModel viewModel = GetAnnotationContentViewModel(bOTAContentViewModel, out AnnotationContent annotation);

                                if (viewModel != null)
                                {
                                    int pageindex = editEvent.PageIndex;
                                    int annotindex = editEvent.AnnotIndex;
                                    viewModel.UpdateModifiedAnnot(pageindex, annotindex, true);
                                }
                            }
                            break;

                        case ActionType.Modify:
                            isTabItemAnnotation = IsBOTATabItemShow(out bOTAContentViewModel, out bOTAContent, "TabItemAnnotation");
                            if (bOTAContent.TabItemAnnotation.IsSelected)
                            {
                                AnnotationContentViewModel viewModel = GetAnnotationContentViewModel(bOTAContentViewModel, out AnnotationContent annotation);

                                if (viewModel != null)
                                {
                                    int pageindex = editEvent.PageIndex;
                                    int annotindex = editEvent.AnnotIndex;
                                    viewModel.UpdateModifiedAnnot(pageindex, annotindex, false);
                                }
                            }
                            break;

                        case ActionType.TextEdit:
                            break;

                        default:
                            break;
                    }
                }
                //空白处 右键菜单 添加注释   为单次添加，不连续添加
                if (IsNoSelectMenu)
                {
                    IsNoSelectMenu = false;
                    PDFViewer.SetMouseMode(MouseModes.PanTool);
                }
            }
        }

        //复制多个注释，粘贴后，默认注释未选中状态
        private void MultipleSelectionAnnot(List<AnnotEditEvent> e)
        {
            bool isAdd = false;
            Dictionary<int, List<int>> selectAnnotDicts = new Dictionary<int, List<int>>();

            foreach (var item in e)
            {
                if (item.EditAction == ActionType.Add /*|| item.EditAction == ActionType.Modify*/)
                {
                    var annot = item.EditAnnotArgs;
                    if (annot.EventType == AnnotArgsType.AnnotSquare || annot.EventType == AnnotArgsType.AnnotCircle ||
                        annot.EventType == AnnotArgsType.AnnotLine || annot.EventType == AnnotArgsType.AnnotStamp || annot.EventType == AnnotArgsType.AnnotFreeText)
                    {
                        if (selectAnnotDicts.ContainsKey(item.PageIndex) == false)
                        {
                            selectAnnotDicts.Add(item.PageIndex, new List<int>());
                            selectAnnotDicts[item.PageIndex].Add(item.AnnotIndex);
                        }
                        else
                        {
                            selectAnnotDicts[item.PageIndex].Add(item.AnnotIndex);
                        }

                        isAdd = true;
                    }
                }
            }

            if (isAdd)
            {
                PDFViewer.ClearSelectAnnots();

                if (StrAnnotToolChecked != "Signature")
                    PDFViewer.SelectAnnotation(selectAnnotDicts);
            }
        }

        //阅读页悬浮相应
        private void PDFViewer_AnnotHoverHandler(object sender, AnnotHoverData e)
        {
            if (e != null && e.DrawContext != null)
            {
                Rect hoverRect = new Rect(
                    e.PaintRect.Left - 2,
                    e.PaintRect.Top - 2,
                    e.PaintRect.Width + 4,
                    e.PaintRect.Height + 4);
                Pen hoverPen = new Pen(new SolidColorBrush(Color.FromArgb(0xff, 0x11, 0x8A, 0xff)), 1);
                hoverPen.DashStyle = DashStyles.Dash;
                e.DrawContext?.DrawRectangle(null, hoverPen, hoverRect);

                //便签，显示ToolTip内容
                if (e.Annot != null && e.Annot.Type == C_ANNOTATION_TYPE.C_ANNOTATION_TEXT)
                {
                    PopAnnotToolTip(e.Annot.GetRect(), hoverRect, e.Annot.GetContent());
                    return;
                }
            }

            CloseAnnotToolTip();
        }

        private void PDFViewer_MouseMove(object sender, MouseEventArgs e)
        {
            if (sender != null && PDFViewer.ToolTip != null && PDFViewer.Parent != null)
            {
                //鼠标移到注释之外，关闭ToolTip浮窗
                var newPoint = e.GetPosition(PDFViewer.Parent as ContentControl);
                var isOutw = newPoint.X > (oldRect.X + oldRect.Width + 4);
                var isOuth = newPoint.Y > (oldRect.Y + oldRect.Height + 4);
                if (newPoint.X < oldRect.X || newPoint.Y < oldRect.Y || isOutw || isOuth)
                {
                    CloseAnnotToolTip();
                }
            }
        }

        private Rect oldRect = new Rect(0, 0, 0, 0);

        private void PopAnnotToolTip(CRect placementRect, Rect hoverRect, string content)
        {
            //便签，显示ToolTip内容
            if (PDFViewer.ToolTip == null)
            {
                if (string.IsNullOrEmpty(content) == false)
                {
                    ToolTip TipChild = new ToolTip();
                    TipChild.Style = App.Current.Resources["FlowToolTip"] as Style;
                    TipChild.MaxWidth = 246;
                    TipChild.Content = content;
                    TipChild.Visibility = Visibility.Visible;
                    TipChild.IsOpen = true;
                    TipChild.Placement = PlacementMode.Right;
                    TipChild.PlacementRectangle = new Rect(placementRect.left, placementRect.top, placementRect.right, placementRect.bottom);
                    TipChild.PlacementTarget = PDFViewer.Parent as ContentControl;
                    TipChild.Placement = PlacementMode.MousePoint;
                    PDFViewer.ToolTip = TipChild;
                    oldRect = hoverRect;
                    PDFViewer.MouseMove -= PDFViewer_MouseMove;
                    PDFViewer.MouseMove += PDFViewer_MouseMove;
                }
            }
        }

        //关闭ToolTip
        private void CloseAnnotToolTip()
        {
            if (PDFViewer.ToolTip != null && PDFViewer.ToolTip is ToolTip)
            {
                ToolTip oldTips = (ToolTip)PDFViewer.ToolTip;
                oldTips.IsOpen = false;
                oldTips.Visibility = Visibility.Collapsed;
                PDFViewer.ToolTip = null;
                PDFViewer.MouseMove -= PDFViewer_MouseMove;
                oldRect = new Rect(0, 0, 0, 0);
            }
        }

        #endregion PDFViewer事件

        #region BindingEvent事件

        //同一属性面板，不同的注释类型
        private void AnnotPropertyPanel_AnnotTypeChanged(object sender, Dictionary<AnnotArgsType, object> e)
        {
            if (e != null)
            {
                AnnotHandlerEventArgs annotArgs = null;
                propertyPanel.SaveLastAnnot();

                foreach (AnnotArgsType argsType in e.Keys)
                {
                    if (propertyPanel.annot.EventType != argsType)
                    {
                        PDFViewer.SetMouseMode(MouseModes.PanTool);
                    }

                    switch (argsType)
                    {
                        case AnnotArgsType.AnnotSquare:
                            annotArgs = GetRect();
                            break;

                        case AnnotArgsType.AnnotCircle:
                            annotArgs = GetCircle();
                            break;

                        case AnnotArgsType.AnnotLine:
                            var LineTag = e[argsType] as string;
                            annotArgs = GetArrowLine(LineTag);
                            break;
                    }
                    ShowPropertyPanel();
                    if (string.IsNullOrEmpty(StrAnnotToolChecked) || StrAnnotToolChecked != "Rect")
                    {
                        PDFViewer.SetMouseMode(MouseModes.PanTool);
                        return;
                    }
                    if (annotArgs != null)
                    {
                        annotArgs.Author = Settings.Default.AppProperties.Description.Author;
                        PDFViewer.SetMouseMode(MouseModes.AnnotCreate);
                        PDFViewer.SetToolParam(annotArgs);
                    }
                }
            }
        }

        //来自属性面板的事件，更改颜色等属性而触发
        private void AnnotPropertyPanel_DataChanged(object sender, Dictionary<AnnotArgsType, object> e)
        {
            if (e != null)
            {
                foreach (AnnotArgsType argsType in e.Keys)
                {
                    var key = ToolExpandDict.FirstOrDefault(q => q.Value == argsType);
                    switch (argsType)
                    {
                        case AnnotArgsType.AnnotHighlight:
                            if (e[argsType] is Color)
                            {
                                HighLightColor = new SolidColorBrush((Color)e[argsType]);
                            }
                            if (e[argsType] is double)
                            {
                                HighLightOpacity = (double)e[argsType];
                            }
                            //创建注释后，修改注释属性，可用于下次创建的注释
                            if (propertyPanel != null && propertyPanel.annot != null && PDFViewer.MouseMode == MouseModes.AnnotCreate)
                            {
                                if (StrAnnotToolChecked == key.Key)
                                {
                                    PDFViewer.SetToolParam(propertyPanel.annot);
                                }
                            }
                            break;

                        case AnnotArgsType.AnnotUnderline:
                            if (e[argsType] is Color)
                            {
                                UnderLineColor = new SolidColorBrush((Color)e[argsType]);
                            }
                            if (e[argsType] is double)
                            {
                                underLineOpacity = (double)e[argsType];
                            }
                            //创建注释后，修改注释属性，可用于下次创建的注释
                            if (propertyPanel != null && propertyPanel.annot != null && PDFViewer.MouseMode == MouseModes.AnnotCreate)
                            {
                                if (StrAnnotToolChecked == key.Key)
                                {
                                    PDFViewer.SetToolParam(propertyPanel.annot);
                                }
                            }
                            break;

                        case AnnotArgsType.AnnotSquiggly:
                            if (e[argsType] is Color)
                            {
                                SquigglyColor = new SolidColorBrush((Color)e[argsType]);
                            }
                            if (e[argsType] is double)
                            {
                                SquigglyOpacity = (double)e[argsType];
                            }
                            //创建注释后，修改注释属性，可用于下次创建的注释
                            if (propertyPanel != null && propertyPanel.annot != null && PDFViewer.MouseMode == MouseModes.AnnotCreate)
                            {
                                if (StrAnnotToolChecked == key.Key)
                                {
                                    PDFViewer.SetToolParam(propertyPanel.annot);
                                }
                            }
                            break;

                        case AnnotArgsType.AnnotStrikeout:
                            if (e[argsType] is Color)
                            {
                                StrikeoutColor = new SolidColorBrush((Color)e[argsType]);
                            }
                            if (e[argsType] is double)
                            {
                                StrikeoutOpacity = (double)e[argsType];
                            }
                            //创建注释后，修改注释属性，可用于下次创建的注释
                            if (propertyPanel != null && propertyPanel.annot != null && PDFViewer.MouseMode == MouseModes.AnnotCreate)
                            {
                                if (StrAnnotToolChecked == key.Key)
                                {
                                    PDFViewer.SetToolParam(propertyPanel.annot);
                                }
                            }
                            break;

                        case AnnotArgsType.AnnotFreehand:

                            if (e[argsType] is FreehandAnnotArgs)
                            {
                                var annot = e[argsType] as FreehandAnnotArgs;
                                if (annot != null)
                                {
                                    if (propertyPanel != null)
                                    {
                                        //属性面板，切换橡皮擦后，再回到画笔时，需要恢复最近画笔的属性值
                                        var AnnotEvent = AnnotAttribEvent.GetAnnotAttribEvent(annot, annot.GetAnnotAttrib());
                                        propertyPanel.AnnotEvent = AnnotEvent;
                                        var AnnotEvents = new List<AnnotAttribEvent>();
                                        AnnotEvents.Add(AnnotEvent);
                                        propertyPanel.AnnotEvents = AnnotEvents;
                                        propertyPanel.annot = annot;
                                        //手绘注释工具按钮的属性
                                        // FreehandPath.Opacity = annot.Transparency;
                                        // FreehandPath.Fill = new SolidColorBrush(annot.InkColor);
                                    }
                                    if (propertyPanel != null && propertyPanel.annot != null && PDFViewer.MouseMode == MouseModes.AnnotCreate)
                                    {
                                        if (StrAnnotToolChecked == key.Key)
                                        {
                                            PDFViewer.SetToolParam(propertyPanel.annot);
                                        }
                                    }
                                }
                            }

                            break;

                        case AnnotArgsType.AnnotErase:
                            if (e[argsType] is ToggleButton)
                            {
                                ToggleButton clickBtn = e[argsType] as ToggleButton;

                                if (clickBtn.IsChecked == true)
                                {
                                    if (clickBtn.Tag.ToString() == "PenBtn")
                                    {
                                        CustomIconToggleBtn btn = new CustomIconToggleBtn();
                                        btn.Tag = "Freehand"; btn.IsChecked = true;
                                        BtnMyTools_Click(btn);
                                        break;
                                    }
                                    CreateEraseArgs();
                                }
                            }
                            break;

                        case AnnotArgsType.AnnotSquare:
                        case AnnotArgsType.AnnotCircle:
                        case AnnotArgsType.AnnotLine:
                        case AnnotArgsType.AnnotFreeText:
                            //创建注释后，修改注释属性，可用于下次创建的注释
                            if (propertyPanel != null && propertyPanel.annot != null && PDFViewer.MouseMode == MouseModes.AnnotCreate)
                            {
                                if (StrAnnotToolChecked == key.Key)
                                {
                                    PDFViewer.SetToolParam(propertyPanel.annot);
                                }
                            }

                            break;
                    }
                }
            }
        }

        private void CreateEraseArgs()
        {
            EraseArgs eraseArgs = new EraseArgs();
            eraseArgs.UIBorderColor = Color.FromArgb(0x1A, 0x00, 0x00, 0x00);
            eraseArgs.UIFillColor = Color.FromArgb(0x1A, 0x00, 0x00, 0x00);
            eraseArgs.Thickness = 10;
            DefaultAnnotProperty annotProperty = SettingHelper.GetAnnotDefaultProperty(AnnotArgsType.AnnotErase);
            if (annotProperty != null)
            {
                eraseArgs.Thickness = annotProperty.Thickness;
            }

            PDFViewer.ClearSelectAnnots(false);
            PDFViewer.SetMouseMode(MouseModes.AnnotCreate);
            PDFViewer.SetToolParam(eraseArgs);

            List<AnnotHandlerEventArgs> eraseArgsList = new List<AnnotHandlerEventArgs>();
            if (eraseArgs != null)
                eraseArgsList.Add(eraseArgs);

            AddToPropertyPanel("FreehandAnnotProperty", "Freehand", eraseArgsList);
        }

        #endregion BindingEvent事件
    }
}