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

using ComPDFKit.PDFAnnotation;
using ComPDFKitViewer;
using ComPDFKitViewer.AnnotEvent;
using ComPDFKitViewer.PdfViewer;
using PDF_Office.CustomControl;
using PDF_Office.EventAggregators;
using PDF_Office.Helper;
using PDF_Office.Properties;
using PDF_Office.ViewModels.BOTA;
using PDF_Office.Views.BOTA;
using PDFSettings;
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 System.Windows.Controls.Primitives;
using System.Windows.Media;

namespace PDF_Office.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.DefaultStored -= AnnotProperty_DefaultStored;
            propertyPanel.DefaultStored += AnnotProperty_DefaultStored;
            propertyPanel.AnnotTypeChanged -= AnnotPropertyPanel_AnnotTypeChanged;
            propertyPanel.AnnotTypeChanged += AnnotPropertyPanel_AnnotTypeChanged;
        }

        private void UnBindingEvent()
        {
            propertyPanel.DataChanged -= AnnotPropertyPanel_DataChanged;
            propertyPanel.DefaultStored -= AnnotProperty_DefaultStored;
            propertyPanel.AnnotTypeChanged -= AnnotPropertyPanel_AnnotTypeChanged;
        }

        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.WidgetClickHander -= PDFViewer_WidgetClickHander;
                PDFViewer.WidgetClickHander += PDFViewer_WidgetClickHander;

                PDFViewer.SnapshotCommandHandler -= PDFViewer_SnapshotCommandHandler;
                PDFViewer.SnapshotCommandHandler += PDFViewer_SnapshotCommandHandler;
            }
        }
        private void UnBindingPDFViewerHandler()
        {
            if (PDFViewer != null)
            {
                PDFViewer.AnnotEditHandler -= PDFViewer_AnnotEditHandler;
                PDFViewer.AnnotActiveHandler -= PDFViewer_AnnotActiveHandler;
                PDFViewer.AnnotCommandHandler -= PDFViewer_AnnotCommandHandler;
                PDFViewer.WidgetClickHander -= PDFViewer_WidgetClickHander;
                PDFViewer.SnapshotCommandHandler -= PDFViewer_SnapshotCommandHandler;
            }
        }
        #endregion

        #region PDFViewer事件
        //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)
                {
                    //IsAnnotCreateReset：是否为创建注释的状态
                    if (e.AnnotItemsList.Count == 1 && e.IsAnnotCreateReset == false)
                    {
                        switch (annot.EventType)
                        {
                            case AnnotArgsType.AnnotHighlight:
                                e.IsAnnotCreateReset = false;
                                GetHighLight(annot as TextHighlightAnnotArgs);
                                break;

                            case AnnotArgsType.AnnotUnderline:
                                GetUnderLine(annot as TextUnderlineAnnotArgs);
                                break;

                            case AnnotArgsType.AnnotStrikeout:
                                GetStrikeout(annot as TextStrikeoutAnnotArgs);
                                break;

                            case AnnotArgsType.AnnotSquiggly:
                                GetSquiggly(annot as TextSquigglyAnnotArgs);
                                break;

                            case AnnotArgsType.AnnotFreehand:
                                GetFreehand(annot as FreehandAnnotArgs);
                                break;

                            case AnnotArgsType.AnnotFreeText:
                                GetFreetext(annot as FreeTextAnnotArgs);
                                break;

                            case AnnotArgsType.AnnotSquare:
                                GetRect(annot as SquareAnnotArgs);
                                break;

                            case AnnotArgsType.AnnotCircle:
                                GetCircle(annot as CircleAnnotArgs);
                                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", annot as LineAnnotArgs);
                                else
                                    GetArrowLine("Arrow", annot as LineAnnotArgs);

                                break;

                            case AnnotArgsType.AnnotLink:
                                viewContentViewModel.IsCreateLink = false;
                                GetLink(annot as LinkAnnotArgs, e);

                                break;

                            case AnnotArgsType.AnnotSticky:
                                GetStickyNote(annot as StickyAnnotArgs);
                                break;
                        }
                        //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 if (e.AnnotItemsList.Count == 1 && e.IsAnnotCreateReset == true)
                    {
                        switch (annot.EventType)
                        {
                            case AnnotArgsType.AnnotLink:
                                viewContentViewModel.IsCreateLink = false;
                                GetLink(annot as LinkAnnotArgs, e);
                                break;

                                //case AnnotArgsType.AnnotStamp://图章
                                //    GetStamp();
                                //    break;

                                //case AnnotArgsType.AnnotStamp://签名
                                //    annotArgs = GetSignature();
                                //    isTemplateAnnot = true;
                                //    break;
                        }

                        //TODO:设计已重新调整为：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 (ToolExpandDict.ContainsValue(e.AnnotItemsList[0].EventType))
                        //{
                        //    foreach(var item in ToolExpandDict)
                        //    {
                        //        if(item.Value == e.AnnotItemsList[0].EventType)
                        //        {
                        //            FindAnnotTypeKey(item.Key, ref annot);
                        //            break;
                        //        }
                        //    }
                        //}
                        ShowPropertyPanel();
                    }
                }
            }
            else
            {
                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;

            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
                        {
                            e.PopupMenu = SelectAnnotContextMenu(sender);
                        }
                        if (e.PopupMenu != null)
                        {
                            e.Handle = true;
                        }
                    }
                    else
                    {
                        if (e.PressOnSelectedText)
                        {
                            e.PopupMenu = NoneSelectAnnotContextMenu(sender, e);
                            if (e.PopupMenu != null)
                            {
                                e.Handle = true;
                            }
                        }
                        else
                        {
                            e.PopupMenu = ViewerContextMenu();
                            if (e.PopupMenu != null)
                            {
                                e.Handle = true;
                            }
                        }
                    }

                    break;
            }
        }
        
        private void PDFViewer_SnapshotCommandHandler(object sender, SnapshotCommandArgs e)
        {
            SnapshotEditToolArgs snapToolArgs = (SnapshotEditToolArgs)PDFViewer.ToolManager.CurrentAnnotArgs;

            SnapshotEditMenuViewModel.SnapToolArgs = snapToolArgs;
            SnapshotEditMenuViewModel.PDFViewer = PDFViewer;
            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;
                                break;
                        }
                    }
                    break;

                default:
                    break;
            }
        }


        private void PDFViewer_AnnotEditHandler(object sender, List<AnnotEditEvent> e)
        {
            if (e != null && e.Count > 0)
            {
                for (int i = 0; i < e.Count; i++)
                {
                    AnnotEditEvent editEvent = e[i];
                    switch (editEvent.EditAction)
                    {
                        case ActionType.Add:
                            BOTAContentViewModel bOTAContentViewModel = null;
                            BOTAContent bOTAContent = null;
                            bool isTabItemAnnotation = IsBOTATabItemShow(out bOTAContentViewModel, out bOTAContent, "TabItemAnnotation");

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

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

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

                                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 (isTabItemAnnotation)
                            {
                                AnnotationContentViewModel viewModel = GetAnnotationContentViewModel(bOTAContentViewModel);

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

                        case ActionType.TextEdit:
                            break;

                        default:
                            break;
                    }
                }
            }
        }

        private void PDFViewer_WidgetClickHander(object sender, WidgetArgs e)
        {
        }
        #endregion

        #region BindingEvent事件
        private void AnnotProperty_DefaultStored(object sender, object e)
        {

        }

        private void AnnotPropertyPanel_AnnotTypeChanged(object sender, Dictionary<AnnotArgsType, object> e)
        {
            if (e != null)
            {
                AnnotHandlerEventArgs annotArgs = null;
                foreach (AnnotArgsType argsType in e.Keys)
                {
                    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;
                    }
                    if (annotArgs != null)
                    {
                        annotArgs.Author = Settings.Default.AppProperties.Description.Author;
                        PDFViewer.SetMouseMode(MouseModes.AnnotCreate);
                        PDFViewer.SetToolParam(annotArgs);
                    }
                    ShowPropertyPanel();
                }
            }
        }

        private void AnnotPropertyPanel_DataChanged(object sender, Dictionary<AnnotArgsType, object> e)
        {
            if (e != null)
            {
                foreach (AnnotArgsType argsType in e.Keys)
                {
                    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];
                            }
                            break;

                        case AnnotArgsType.AnnotUnderline:
                            if (e[argsType] is Color)
                            {
                                UnderLineColor = new SolidColorBrush((Color)e[argsType]);
                            }
                            if (e[argsType] is double)
                            {
                                underLineOpacity = (double)e[argsType];
                            }
                            break;

                        case AnnotArgsType.AnnotSquiggly:
                            if (e[argsType] is Color)
                            {
                                SquigglyColor = new SolidColorBrush((Color)e[argsType]);
                            }
                            if (e[argsType] is double)
                            {
                                SquigglyOpacity = (double)e[argsType];
                            }
                            break;

                        case AnnotArgsType.AnnotStrikeout:
                            if (e[argsType] is Color)
                            {
                                StrikeoutColor = new SolidColorBrush((Color)e[argsType]);
                            }
                            if (e[argsType] is double)
                            {
                                StrikeoutOpacity = (double)e[argsType];
                            }
                            break;

                        case AnnotArgsType.AnnotFreehand:
                            if (e[argsType] is Color)
                            {
                                // FreehandPath.Fill = new SolidColorBrush((Color)e[argsType]);
                            }
                            if (e[argsType] is double)
                            {
                                //  FreehandPath.Opacity = (double)e[argsType];
                            }
                            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;
                                    }
                                    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);

                                    Dictionary<AnnotAttrib, object> annotAttribsList = new Dictionary<AnnotAttrib, object>();
                                    annotAttribsList[AnnotAttrib.Color] = eraseArgs.UIBorderColor;
                                    annotAttribsList[AnnotAttrib.FillColor] = eraseArgs.UIFillColor;
                                    annotAttribsList[AnnotAttrib.Thickness] = eraseArgs.Thickness;
                                    AddToPropertyPanel("FreehandAnnotProperty", "Freehand", eraseArgs, annotAttribsList);

                                }
                            }
                            break;
                    }
                }
            }
        }

        #endregion

    }

}