PDFOffice_Windows_exe/PDF Office/ViewModels/FillAndSign/FillAndSignContentViewModel.cs

using ComPDFKitViewer.AnnotEvent;
using ComPDFKitViewer.PdfViewer;
using PDF_Office.Model;
using Prism.Commands;
using Prism.Mvvm;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using PDF_Office.ViewModels.Tools;
using ComPDFKitViewer;
using PDF_Office.Helper;
using PDF_Office.Properties;
using PDFSettings;
using System.Windows.Media;
using ComPDFKit.PDFDocument.Action;
using ComPDFKit.PDFDocument;
using System.Diagnostics;
using ComPDFKit.PDFAnnotation;

namespace PDF_Office.ViewModels.FillAndSign
{
    public class FillAndSignContentViewModel : BindableBase, INavigationAware
    {
        #region 
        private CPDFViewer PDFViewer;
        private AnnotPropertyPanel propertyPanel = new AnnotPropertyPanel();
        private ViewContentViewModel viewContentViewModel;
        private bool isRightMenuAddAnnot = false;
        private IRegionManager regions { get; set; }
        private Dictionary<string, AnnotArgsType> ToolExpandDict = new Dictionary<string, AnnotArgsType>();
        #endregion

        #region Command
        public DelegateCommand<RoutedEventArgs> CheckCommand { get; set; }

        /// <summary>
        /// 按钮名称和属性面板映射字典
        /// </summary>
        public Dictionary<string, string> btnToProperty = new Dictionary<string, string>();
        #endregion

        public FillAndSignContentViewModel(IRegionManager regionManager)
        {
            regions = regionManager;

            CheckCommand = new DelegateCommand<RoutedEventArgs>(CheckedEvent);
            ToolExpandDict.Add("Freetext", AnnotArgsType.AnnotFreeText);
            InitDictionary();
        }

        private void CheckedEvent(RoutedEventArgs e)
        {
            var control = e.OriginalSource as Control;

            NavigateToProperty(control.Name);
            //不创建注释，属于注释模板
            //bool isTemplateAnnot = false;
            //bool isSnapshotEdit = false;
            //AnnotHandlerEventArgs annotArgs = null;

           
            //    var tag = control.Name;
            //    if (control.Name == "RbtnSign") {  FindAnnotTypeKey("Signature", ref annotArgs); isTemplateAnnot = true; }
            //    if (control.Name == "RbtnText") { FindAnnotTypeKey("Freetext", ref annotArgs);  }
            //if (control.Name == "RbtnDate") { FindAnnotTypeKey("Freetext", ref annotArgs); } 

            //    if (tag == "SnapshotEdit")
            //    {
            //        isSnapshotEdit = true;
            //    }
            //    else if (tag == "Signature" || tag == "Stamp")
            //    {
            //        isTemplateAnnot = true;
            //    }

            //    if (annotArgs != null)
            //    {
            //        annotArgs.Author = Settings.Default.AppProperties.Description.Author;
            //        PDFViewer.SetMouseMode(MouseModes.AnnotCreate);
            //        PDFViewer.SetToolParam(annotArgs);
            //        isRightMenuAddAnnot = false;
            //    }
            

            ////当不是注释模板，且无创建注释时，属性面板显示为空内容
            //if (isTemplateAnnot == false && annotArgs == null)
            //{
            //    PDFViewer.SetMouseMode(MouseModes.PanTool);
            //    viewContentViewModel.SelectedPrpoertyPanel("PropertyPanelContent", null);
            //}
            //else
            //{
            //    if (isSnapshotEdit == true)
            //    {
            //        ShowPropertyPanel(false);
            //        isSnapshotEdit = false;
            //    }
            //    else
            //    {
            //        ShowPropertyPanel(true);
            //    }
            //}
            
        }

        //注释工具
        private void FindAnnotTypeKey(string tag, ref AnnotHandlerEventArgs annotArgs, bool isRightMenuAdd = false)
        {
            switch (tag)
            {
                

                case "Freetext"://文本
                    annotArgs = GetFreetext();
                    break;

                case "Stamp"://图章
                    annotArgs = GetStamp();
                    break;

                case "Signature"://签名
                    annotArgs = GetSignature();
                    PDFViewer.SetMouseMode(MouseModes.PanTool);//清空其他注释
                    break;

            }
        }
        /// <summary>
        /// 签名
        /// </summary>
        /// <returns></returns>
        private AnnotHandlerEventArgs GetSignature()
        {
            AddToPropertyPanel("SignatureAnnotProperty");
            return null;
        }


        /// <summary>
        /// 图章
        /// </summary>
        /// <returns></returns>
        private AnnotHandlerEventArgs GetStamp()
        {
            StampAnnotArgs stampAnnotArgs = new StampAnnotArgs();
            stampAnnotArgs.Opacity = 1;
            stampAnnotArgs.StampText = "APPROVED";
            stampAnnotArgs.Type = StampType.STANDARD_STAMP;
            Dictionary<AnnotAttrib, object> annotAttribsList = new Dictionary<AnnotAttrib, object>();
            annotAttribsList[AnnotAttrib.Transparency] = stampAnnotArgs.Opacity;

            List<AnnotHandlerEventArgs> stampAnnotArgsList = new List<AnnotHandlerEventArgs>();
            if (stampAnnotArgs != null)
                stampAnnotArgsList.Add(stampAnnotArgs);

            AddToPropertyPanel("StampAnnotProperty", null, stampAnnotArgsList, annotAttribsList);
            return stampAnnotArgs;
        }

        /// <summary>
        /// 文本
        /// </summary>
        /// <param name="selectedfreetextArgs"></param>
        /// <returns></returns>
        private AnnotHandlerEventArgs GetFreetext(List<AnnotHandlerEventArgs> selectedArgs = null)
        {
            Dictionary<AnnotAttrib, object> annotAttribsList = new Dictionary<AnnotAttrib, object>();
            FreeTextAnnotArgs freetextArgs = null;
            TextAlignment textAlignment;

            if (selectedArgs == null || selectedArgs.Count == 0)
            {
                freetextArgs = new FreeTextAnnotArgs();
                freetextArgs.Align = TextAlignment.Left;
                freetextArgs.BgColor = Colors.Transparent;
                freetextArgs.FontFamily = new FontFamily(Settings.Default.AppProperties.Annotate.TextFontFamaily);
                freetextArgs.FontColor = Colors.Black;
                freetextArgs.FontSize = 14;
                freetextArgs.Transparency = 1;
                freetextArgs.LineColor = Colors.Black;
                freetextArgs.LineWidth = 0;
                freetextArgs.TextContent = string.Empty;

                DefaultAnnotProperty annotProperty = SettingHelper.GetAnnotDefaultProperty(AnnotArgsType.AnnotFreeText);
                if (annotProperty != null)
                {
                    freetextArgs.Align = annotProperty.TextAlign;
                    freetextArgs.BgColor = annotProperty.BackgroundColor;
                    freetextArgs.FontFamily = new FontFamily(annotProperty.FontFamily);
                    freetextArgs.FontColor = annotProperty.ForgoundColor;
                    freetextArgs.FontSize = annotProperty.FontSize;
                    freetextArgs.Transparency = annotProperty.Opacity;
                    freetextArgs.LineColor = annotProperty.BorderColor;
                    freetextArgs.LineWidth = annotProperty.Thickness;
                    freetextArgs.TextContent = annotProperty.NoteText;
                    freetextArgs.FontWeight = annotProperty.FontWeight;
                    freetextArgs.FontStyle = annotProperty.FontStyle;
                }

                int align = (int)Settings.Default.AppProperties.Annotate.TextAlign;

                if (align == 0)
                    textAlignment = TextAlignment.Left;
                else if (align == 1)
                    textAlignment = TextAlignment.Center;
                else
                    textAlignment = TextAlignment.Right;

                if (freetextArgs != null)
                {
                    selectedArgs = new List<AnnotHandlerEventArgs>();
                    selectedArgs.Add(freetextArgs);
                }
            }
            else
            {
                freetextArgs = selectedArgs[0] as FreeTextAnnotArgs;
                textAlignment = freetextArgs.Align;
            }

            annotAttribsList[AnnotAttrib.Color] = freetextArgs.LineColor;
            annotAttribsList[AnnotAttrib.FillColor] = freetextArgs.BgColor;
            annotAttribsList[AnnotAttrib.Thickness] = freetextArgs.LineWidth;
            annotAttribsList[AnnotAttrib.Transparency] = freetextArgs.Transparency;
            annotAttribsList[AnnotAttrib.FontColor] = freetextArgs.FontColor;
            annotAttribsList[AnnotAttrib.FontSize] = freetextArgs.FontSize;
            annotAttribsList[AnnotAttrib.FontFamily] = freetextArgs.FontFamily;
            annotAttribsList[AnnotAttrib.FontStyle] = freetextArgs.FontStyle;
            annotAttribsList[AnnotAttrib.FontWeight] = freetextArgs.FontWeight;
            annotAttribsList[AnnotAttrib.TextAlign] = textAlignment;
            annotAttribsList[AnnotAttrib.NoteText] = freetextArgs.TextContent;

            AddToPropertyPanel("FreetextAnnotProperty", "Freetext", selectedArgs, annotAttribsList);
            return freetextArgs;
        }

        /// <summary>
        /// 导航到同一个注释xaml时，需要区分某个注释；比如高亮、删除线、下划线
        /// </summary>
        /// <param name="viewContent">对应的注释面板</param>
        /// <param name="toolTag">导航到同一个注释xaml时，需要区分某个注释；比如高亮、删除线、下划线</param>
        /// <param name="annot">注释</param>
        /// <param name="annotAttribsList">更改注释属性的键值对，更改值后会自动记录undoRedo容器里</param>
        private void AddToPropertyPanel(string viewContent, string toolTag = null, List<AnnotHandlerEventArgs> annots = null, Dictionary<AnnotAttrib, object> annotAttribsList = null, AnnotAttribEvent annotAttribEvent = null)
        {

            if (annots != null)
            {
                propertyPanel.annotlists = annots;
                propertyPanel.annot = annots[0];
            }
            else
            {
                propertyPanel.annotlists = null;
                propertyPanel.annot = null;
            }

            if (annotAttribsList != null)
            {
                if (annots.Count > 1)
                {
                    if (propertyPanel.AnnotEvents == null)
                        propertyPanel.AnnotEvents = new List<AnnotAttribEvent>();

                    propertyPanel.AnnotEvents.Clear();

                    foreach (var itemAnnot in annots)
                    {
                        var eventitem = AnnotAttribEvent.GetAnnotAttribEvent(itemAnnot, annotAttribsList);
                        propertyPanel.AnnotEvents.Add(eventitem);
                    }
                }

                propertyPanel.AnnotEvent = AnnotAttribEvent.GetAnnotAttribEvent(annots[0], annotAttribsList);
                if (annots[0] is LinkAnnotArgs && annotAttribEvent != null)
                {
                    propertyPanel.AnnotEvent = annotAttribEvent;
                }
            }

            if (string.IsNullOrEmpty(viewContent) == false)
            {
                viewContentViewModel.SelectedPrpoertyPanel(viewContent, propertyPanel);
            }
        }

        private void NavigateToProperty(string btnName)
        {
            NavigationParameters values = new NavigationParameters();
            values.Add(ParameterNames.PDFViewer, PDFViewer);
            regions.RequestNavigate(RegionNames.PropertyRegionName,btnToProperty[btnName]);
            viewContentViewModel.IsPropertyOpen = true;
        }

        /// <summary>
        /// 初始化按钮名称-属性面板字典
        /// </summary>
        private void InitDictionary()
        {
            btnToProperty["RbtnText"] = "TextFillProperty";
            btnToProperty["RbtnTick"] = "ShapFillProperty";
            btnToProperty["RbtnFork"] = "ShapFillProperty";
            btnToProperty["RbtnRectangle"] = "ShapFillProperty";
            btnToProperty["RbtnLine"] = "ShapFillProperty";
            btnToProperty["RbtnPoint"] = "ShapFillProperty";
            btnToProperty["RbtnDate"] = "DateFillProperty";
            btnToProperty["RbtnSign"] = "";

        }

        private void BindingPDFViewerHandler()
        {
            //来自PDFViewer的响应事件
            if (PDFViewer != null)
            {
                

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

            
            }
        }


        //选中和非选中注释，右键菜单
        private void PDFViewer_AnnotActiveHandler(object sender, AnnotAttribEvent e)
        {
            if (e != 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);
                            //记录这次选中的注释，之后创建注释会跟随上次选中注释的属性值
                            PDFViewer.SetToolParam(annot);
                        }
                        else
                        {
                            
                            //TODO: 设计已重新调整为(仅限高亮注释)：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
                            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))
                                {
                                    foreach (var item in ToolExpandDict)
                                    {
                                        if (item.Value == e.AnnotItemsList[0].EventType)
                                        {
                                            annot = null;//新建注释时，回到默认值
                                            FindAnnotTypeKey(item.Key, ref annot);
                                            break;
                                        }
                                    }
                                }
                            }
                            //else
                            PDFViewer.SetToolParam(annot);
                            //设计重新调整，阅读页空白处，右键菜单，添加链接，和pro mac一样的效果，不显示属性栏
                            if (isRightMenuAddAnnot)
                            {
                                ShowPropertyPanel(false);
                            }
                            else
                            {
                                ShowPropertyPanel();
                            }
                        }
                    }
                    else
                    {
                        bool isDifferentAnnotTyle = false;
                        var lastAnnot = annot;
                        foreach (var item in e.AnnotItemsList)
                        {
                            if (lastAnnot.EventType != item.EventType)
                            {
                                if (isShapAnnot(annot) == true && isShapAnnot(item) == true)
                                {
                                    lastAnnot = item;
                                    continue;
                                }

                                lastAnnot = item;
                                isDifferentAnnotTyle = true;
                                break;
                            }
                        }


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

                }
            }
            else
            {
                viewContentViewModel.SelectedPrpoertyPanel("PropertyPanelContent", null);
            }
        }
        private bool isShapAnnot(AnnotHandlerEventArgs annot)
        {
            if (annot.EventType == AnnotArgsType.AnnotCircle ||
                annot.EventType == AnnotArgsType.AnnotSquare ||
                annot.EventType == AnnotArgsType.AnnotLine
                )
            {
                return true;
            }
            else
            {
                return false;
            }
        }
        private void GetSelectedAnnots(AnnotAttribEvent e)
        {
            var annot = e.AnnotItemsList[0];
            switch (annot.EventType)
            {
                


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

                

           
            }
        }
        private void ShowPropertyPanel(bool show = true)
        {
            viewContentViewModel.IsPropertyOpen = show;
        }

        #region Navigation

        public bool IsNavigationTarget(NavigationContext navigationContext)
        {
            return true;
        }

        public void OnNavigatedFrom(NavigationContext navigationContext)
        {

        }

        public void OnNavigatedTo(NavigationContext navigationContext)
        {
            navigationContext.Parameters.TryGetValue<ViewContentViewModel>(ParameterNames.ViewContentViewModel, out viewContentViewModel);
            navigationContext.Parameters.TryGetValue<CPDFViewer>(ParameterNames.PDFViewer, out PDFViewer);
            BindingPDFViewerHandler();
        }
        #endregion
    }
}