页面编辑-拖拽 测试板一

PDF Office/Views/PageEdit/PageEditContent.xaml.cs

@@ -1,10 +1,14 @@
-using PDF_Master.EventAggregators;
+using ComPDFKit.PDFDocument;
+using ComPDFKitViewer.PdfViewer;
+using ImTools;
+using PDF_Master.EventAggregators;
 using PDF_Master.Helper;
 using PDF_Master.Model.PageEdit;
 using PDF_Master.ViewModels.PageEdit;
 using Prism.Events;
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using System.Text;
 using System.Text.RegularExpressions;
@@ -84,6 +88,11 @@ namespace PDF_Master.Views.PageEdit
         //是否正在从外部拖入文件
         public bool isDragingEnter { get; set; } = false;
 
+        /// <summary>
+        /// 是否正在从 App 拖出文件
+        /// </summary>
+        public bool isExtractEnter { get; set; } = false;
+
         /// <summary>
         /// 是否需要自动滚动
         /// </summary>
@@ -95,8 +104,6 @@ namespace PDF_Master.Views.PageEdit
 
         private PageEditContentViewModel viewModel;
 
-
-
         public PageEditContent()
         {
             InitializeComponent();
@@ -120,7 +127,6 @@ namespace PDF_Master.Views.PageEdit
             eventAggregator.GetEvent<CleanSelectAllEvent>().Subscribe(CleanSelectAll, e => e.Unicode == unicode);
         }
 
-
         private void Timer_Tick(object sender, EventArgs e)
         {
             PulishEvent();
@@ -148,13 +154,13 @@ namespace PDF_Master.Views.PageEdit
 
         private void OneNotifyEvent(PageEditNotifyEventArgs e)
         {
-
             switch (e.Type)
             {
                 case NotifyType.RefreshPage:
                     //计算当前区域的页面范围后传递回VM
                     PulishEvent();
                     break;
+
                 case NotifyType.SelectItems:
                     //根据Vm的参数选中部分页面
                     if (e.PageRange.Count == 1)
@@ -175,12 +181,14 @@ namespace PDF_Master.Views.PageEdit
                         }
                     }
                     break;
+
                 case NotifyType.PageCountChanged:
-                    if(GridBOTAHeader.Visibility == Visibility.Visible)
+                    if (GridBOTAHeader.Visibility == Visibility.Visible)
                     {
                         viewModel?.GetSourceItems(false);
                     }
                     break;
+
                 default:
                     break;
             }
@@ -192,9 +200,8 @@ namespace PDF_Master.Views.PageEdit
             ListPageEdit.SelectedIndex = viewModel.PDFViewer.CurrentIndex;
         }
 
-
-
         #region UI事件
+
         /// <summary>
         /// 每次显示的时候就触发事件，刷新所有图片
         /// </summary>
@@ -213,15 +220,9 @@ namespace PDF_Master.Views.PageEdit
                 PulishEvent();
                 //当前页面发生变化时通过ScrollChanged事件来刷新图片
                 isFirstScrollChange = true;
-
-
             }
         }
 
-       
-
-
-
         /// <summary>
         /// 鼠标滚轮滚动时触发的事件
         /// </summary>
@@ -258,13 +259,14 @@ namespace PDF_Master.Views.PageEdit
             PulishEvent();
         }
 
-        #endregion
+        #endregion UI事件
 
         #region 方法
+
         /// <summary>
         /// 发布事件
         /// </summary>
-      public  void PulishEvent()
+        public void PulishEvent()
         {
             //判空 避免某些乱七八糟的情况下异常
             if (ListPageEdit != null & ListPageEdit.Items.Count > 0)
@@ -280,9 +282,6 @@ namespace PDF_Master.Views.PageEdit
             }
         }
 
-
-
-
         /// <summary>
         /// 获取滑轨的垂直偏移量，结合item总数和Item尺寸以及间隔，来估算实际展示的item范围
         /// 返回值为页面范围  从1开始
@@ -342,7 +341,7 @@ namespace PDF_Master.Views.PageEdit
             return null;
         }
 
-        #endregion
+        #endregion 方法
 
         /// <summary>
         /// 输入框显示时，自动获取焦点
@@ -361,12 +360,12 @@ namespace PDF_Master.Views.PageEdit
         {
             try
             {
-                if (e.LeftButton == MouseButtonState.Pressed&&!isDragingEnter)
+                if (e.LeftButton == MouseButtonState.Pressed && !isDragingEnter)
                 {
-                   
                     //鼠标框选逻辑
                     if (startChoose)
                     {
+                        isExtractEnter = false;
                         var position = e.GetPosition(ListPageEdit);
                         if (position.X < 5 || position.X > ListPageEdit.ActualWidth - 5 || position.Y < 5 || position.Y > ListPageEdit.ActualHeight - 5)
                         {
@@ -380,47 +379,95 @@ namespace PDF_Master.Views.PageEdit
                         DoSelectItems();
                         return;
                     }
-
                     //拖拽排序的逻辑
-                    var pos = e.GetPosition(ListPageEdit);
-                    if (pos.Y < 0 || pos.Y > ListPageEdit.ActualHeight)
-                    {
-                        LineInset.Visibility = Visibility.Collapsed;
-                        ImgPicture.Visibility = Visibility.Collapsed;
-                        return;
-                    }
-                    HitTestResult result = VisualTreeHelper.HitTest(ListPageEdit, pos);
-                    if (result == null)
-                    {
-                        return;
-                    }
-                    var listBoxItem = CommonHelper.FindVisualParent<ListBoxItem>(result.VisualHit);
-                    if (listBoxItem == null)
+                    else
                     {
-                        return;
-                    }
-                    isDragingEnter = false;
-                    tempItem = listBoxItem.DataContext as PageEditItem;
+                        var pos = e.GetPosition(ListPageEdit);
+                        if (pos.Y < 0 || pos.Y > ListPageEdit.ActualHeight)
+                        {
+                            LineInset.Visibility = Visibility.Collapsed;
+                            ImgPicture.Visibility = Visibility.Collapsed;
+                            return;
+                        }
+                        HitTestResult result = VisualTreeHelper.HitTest(ListPageEdit, pos);
+                        if (result == null)
+                        {
+                            return;
+                        }
+                        var listBoxItem = CommonHelper.FindVisualParent<ListBoxItem>(result.VisualHit);
+                        if (listBoxItem == null)
+                        {
+                            return;
+                        }
+                        isDragingEnter = false;
+                        tempItem = listBoxItem.DataContext as PageEditItem;
 
-                    var item_pos = e.GetPosition(listBoxItem);
-                    if (item_pos != null)
-                    {
-                        item_x = item_pos.X;
-                        item_y = item_pos.Y;
+                        var item_pos = e.GetPosition(listBoxItem);
+                        if (item_pos != null)
+                        {
+                            item_x = item_pos.X;
+                            item_y = item_pos.Y;
+                        }
+                        var scroll = GetScrollHost(ListPageEdit);
+
+                        //string filename = Guid.NewGuid().ToString() + ".pdf";
+                        //string tempPath = System.IO.Path.Combine(System.IO.Path.GetTempPath(), filename);
+                        //System.IO.File.Create(tempPath);
+                        //string[] files = new string[1];
+                        //files[0] = tempPath;
+
+                        string filename = Guid.NewGuid().ToString() + ".pdf";
+                        string dir = System.IO.Path.Combine(System.IO.Path.GetTempPath());
+                        if (!System.IO.Directory.Exists(dir))
+                        {
+                            System.IO.Directory.CreateDirectory(dir);
+                        }
+
+                        string tempPath = System.IO.Path.Combine(System.IO.Path.GetTempPath(), filename);
+
+                        #region 提取文件
+
+                        List<int> pagenums = new List<int>();
+                        for (int i = 0; i < viewModel.PageEditItems.Count; i++)
+                        {
+                            if (viewModel.PageEditItems[i].Selected)
+                            {
+                                pagenums.Add(viewModel.PageEditItems[i].PageNumber);
+                            }
+                        }
+                        for (int i = 0; i < pagenums.Count; i++)
+                        {
+                            string path = CommonHelper.CreateFilePath(tempPath);
+                            CPDFDocument savedoc = CPDFDocument.CreateDocument();
+                            bool result2 = savedoc.ImportPages(viewModel.PDFViewer.Document, pagenums[i].ToString());
+                            if (!result2)
+                            {
+                                savedoc.Release();
+                                continue;
+                            }
+                            result2 = savedoc.WriteToFilePath(path);
+                            if (!result2)
+                            {
+                                savedoc.Release();
+                                continue;
+                            }
+                            savedoc.Release();//释放内存
+                        }
+
+                        #endregion 提取文件
+
+                        string[] files = new string[1];
+                        files[0] = tempPath;
+
+                        DataObject dataObj = new DataObject(DataFormats.FileDrop, files);
+
+                        //禁用从窗体拖拽到桌面的方法
+                        //DataObject dataObj = new DataObject(listBoxItem);
+                        isExtractEnter = true;
+                        DragDrop.DoDragDrop(ListPageEdit, dataObj, DragDropEffects.Move);
+                        Mouse.Capture(ListPageEdit);
+                        return;
                     }
-                    var scroll = GetScrollHost(ListPageEdit);
-
-                    string filename = Guid.NewGuid().ToString() + ".pdf";
-                    string tempPath = System.IO.Path.Combine(System.IO.Path.GetTempPath(), filename);
-                    System.IO.File.Create(tempPath);
-                    string[] files = new string[1];
-                    files[0] = tempPath;
-                    //禁用从窗体拖拽到桌面的方法
-                    //DataObject dataObj = new DataObject(DataFormats.FileDrop, files);
-                    DataObject dataObj = new DataObject(listBoxItem);
-                    DragDrop.DoDragDrop(ListPageEdit, dataObj, DragDropEffects.Copy);
-                    Mouse.Capture(ListPageEdit);
-                    return;
                 }
                 RectChoose.Visibility = Visibility.Collapsed;
                 startChoose = false;
@@ -469,14 +516,14 @@ namespace PDF_Master.Views.PageEdit
             }
             //选中了item 时，不能框选
             startChoose = false;
+            isDragingEnter = false;
 
-            
             //更改系统的选中规则，选中状态下，鼠标松开后取消选中
             //方便实现多选拖拽功能
             if (listBoxItem.IsSelected == true && !Keyboard.IsKeyDown(Key.LeftCtrl))
             {
                 e.Handled = true;
-            }      
+            }
         }
 
         private void ListPageEdit_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
@@ -576,7 +623,7 @@ namespace PDF_Master.Views.PageEdit
         /// <param name="e"></param>
         private async void ListPageEdit_Drop(object sender, DragEventArgs e)
         {
-            isDragingEnter = false;
+            //isDragingEnter = false;
             needScroll = false;
             if (!isDraging)
             {
@@ -590,51 +637,51 @@ namespace PDF_Master.Views.PageEdit
             string[] file = (string[])e.Data.GetData(DataFormats.FileDrop);
             if (file != null)
             {
-                return;
-            }
-            #region 功能付费锁
-            #endregion
+                #region 从外部拖拽插入文件
 
-            #region  从外部拖拽插入文件
-            if (isDragingEnter)
-            {
-                //注释从外部拖拽插入文件的功能
-                //var files = (string[])e.Data.GetData(DataFormats.FileDrop);
-                //Array.Reverse(files);
-                //foreach(string file in files)
-                //{
-                //    System.IO.FileInfo info = new System.IO.FileInfo(file);
-                //    if(System.IO.Path.GetExtension(file).ToLower()==".pdf"&&info.Length>0)
-                //    {
-                //        int index = InsertIndex == -1 ? 0 : InsertIndex;
-                //        viewModel.InsertFromFile(index, file);
-                //        viewModel.ReloadAfterOption(true,true,new Tuple<int, int>(0,ListPageEdit.Items.Count));
-                //    }
-                //}
-                ////其他文件  则新增一个页签打开
-                ////    DragAddTab.Invoke(dragingEnterPath, new RoutedEventArgs());//底层库需要加一个  Load(TPDFDocument)的接口
-                //LineInset.Visibility = Visibility.Collapsed;
-                //ImgPicture.Visibility = Visibility.Collapsed;
-                //isDragingEnter = false;
-                return;
+                if (isDragingEnter)
+                {
+                    //注释从外部拖拽插入文件的功能
+                    var files = (string[])e.Data.GetData(DataFormats.FileDrop);
+                    Array.Reverse(files);
+                    foreach (string item in files)
+                    {
+                        System.IO.FileInfo info = new System.IO.FileInfo(item);
+                        if (System.IO.Path.GetExtension(item).ToLower() == ".pdf" && info.Length > 0)
+                        {
+                            int index = InsertIndex == -1 ? 0 : InsertIndex;
+                            await viewModel.InsertFromFile(index, item);
+                            viewModel.ReloadAfterOption(true, true, new Tuple<int, int>(0, ListPageEdit.Items.Count));
+                        }
+                    }
+                    //其他文件  则新增一个页签打开
+                    //    DragAddTab.Invoke(dragingEnterPath, new RoutedEventArgs());//底层库需要加一个  Load(TPDFDocument)的接口
+                    LineInset.Visibility = Visibility.Collapsed;
+                    ImgPicture.Visibility = Visibility.Collapsed;
+                    isDragingEnter = false;
+                    return;
+                }
+
+                #endregion 从外部拖拽插入文件
+
+                //return;
             }
-            #endregion
 
             var pos = e.GetPosition(ListPageEdit);
             var result = VisualTreeHelper.HitTest(ListPageEdit, pos);
-            //if (result == null)
-            //{
-            //    //超出当前可控区域
-            //    ExitDraging();
-            //    return;
-            //}
-            ////查找元数据
+            if (result == null)
+            {
+                //超出当前可控区域
+                ExitDraging();
+                return;
+            }
+            //查找元数据
             //var sourcePerson = e.Data.GetData(typeof(StackPanel)) as StackPanel;
-            //if (sourcePerson == null)
-            //{
-            //    ExitDraging();
-            //    return;
-            //}
+            if (tempItem == null)
+            {
+                ExitDraging();
+                return;
+            }
             //查找目标数据
             int targetindex = 0;//目标插入位置
             if (InsertIndex != -1)
@@ -679,7 +726,7 @@ namespace PDF_Master.Views.PageEdit
                 return;
             }
 
-            viewModel.DragToSort(targetindex,pages);
+            viewModel.DragToSort(targetindex, pages);
             ExitDraging();
             isDraging = false;
         }
@@ -704,7 +751,7 @@ namespace PDF_Master.Views.PageEdit
             try
             {
                 //将付费锁逻辑提前，避免因弹窗显示后导致虚影无法消失问题
-                if(!viewModel.viewContentViewModel.IAPBeforeFunction())
+                if (!viewModel.viewContentViewModel.IAPBeforeFunction())
                 {
                     return;
                 }
@@ -715,12 +762,11 @@ namespace PDF_Master.Views.PageEdit
 
                 //从外部拖入文件时 返回
                 string[] file = (string[])e.Data.GetData(DataFormats.FileDrop);
-                if(file!=null)
+                if (file != null)
                 {
-                    return;
+                    //return;
                 }
 
-
                 //滚动后有 位置不准确 要减去滚动偏移量
                 //控制线的位置
                 var pos = e.GetPosition(ListPageEdit);
@@ -740,14 +786,15 @@ namespace PDF_Master.Views.PageEdit
                     //return;
                 }
 
-                #region  计算虚影位置
+                #region 计算虚影位置
+
                 //xaml层 要设置 虚影控件为左上
                 double xPos = 0;
                 double yPos = 0;
                 //内部拖动
                 if (!isDragingEnter)
                 {
-                    if(tempItem!=null)
+                    if (tempItem != null)
                     {
                         ImgPicture.Width = tempItem.ItemSize.Width;
                         ImgPicture.Height = tempItem.ItemSize.Height;
@@ -769,16 +816,18 @@ namespace PDF_Master.Views.PageEdit
                 }
 
                 ImgPicture.Margin = new Thickness(xPos, yPos, 0, 0);
-                #endregion
+
+                #endregion 计算虚影位置
 
                 #region 计算插入标记位置
+
                 var scroll = GetScrollHost(ListPageEdit);
                 if (listBoxItem != null)
                 {
                     //虚拟化影响到该值计算
                     var p = VisualTreeHelper.GetOffset(listBoxItem);//计算控件在容器中的偏移(位置)
                     LineInset.Visibility = Visibility.Visible;
-                    if(!isDragingEnter)
+                    if (!isDragingEnter)
                     {
                         ImgPicture.Visibility = Visibility.Visible;
                     }
@@ -807,7 +856,7 @@ namespace PDF_Master.Views.PageEdit
                     {
                         InsertIndex = ListPageEdit.Items.IndexOf(listBoxItem.DataContext as PageEditItem) + 1;
                     }
-                    Console.WriteLine("InsertIndex:{0}\r\n",InsertIndex);
+                    Console.WriteLine("InsertIndex:{0}\r\n", InsertIndex);
                     //MidLane.Y1 = p.Y - scroll.VerticalOffset;//向下滑动后要减去滑动值
                     LineInset.Y1 = p.Y;
                     if (LineInset.Y1 < 0)//避免超出上边界
@@ -821,7 +870,8 @@ namespace PDF_Master.Views.PageEdit
                         LineInset.Y2 = 0;
                     }
                 }
-                #endregion
+
+                #endregion 计算插入标记位置
 
                 //暂时处理  鼠标移出边框时，虚影的显示问题
                 if (pos.Y <= 30 || pos.Y >= ListPageEdit.ActualHeight - 10)
@@ -839,6 +889,7 @@ namespace PDF_Master.Views.PageEdit
                 }
 
                 #region 靠近上下边界时，自动滚动，离边界越近，滚动速度越快
+
                 speed = 0;
                 if (pos.Y >= ListPageEdit.ActualHeight - 30)
                 {
@@ -855,26 +906,26 @@ namespace PDF_Master.Views.PageEdit
 
                 var v = scroll.VerticalOffset;
                 scroll.ScrollToVerticalOffset(v + speed);//触发连续滚动
-                #endregion
+
+                #endregion 靠近上下边界时，自动滚动，离边界越近，滚动速度越快
             }
             catch
             {
-
             }
         }
 
         private void ListBoxItem_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
         {
-            if(GridBOTAHeader.Visibility == Visibility.Visible&&viewModel.PDFViewer!=null)
+            if (GridBOTAHeader.Visibility == Visibility.Visible && viewModel.PDFViewer != null)
             {
-                if(Keyboard.Modifiers == ModifierKeys.Shift||Keyboard.Modifiers== ModifierKeys.Control)
+                if (Keyboard.Modifiers == ModifierKeys.Shift || Keyboard.Modifiers == ModifierKeys.Control)
                 {
                     return;
                 }
                 var item = (sender as ListBoxItem).DataContext as PageEditItem;
-                if(item != null)
+                if (item != null)
                 {
-                    viewModel.PDFViewer.GoToPage(item.PageNumber-1);
+                    viewModel.PDFViewer.GoToPage(item.PageNumber - 1);
                 }
             }
         }
@@ -902,7 +953,7 @@ namespace PDF_Master.Views.PageEdit
                 ItemSuitAcutalWidth(e.NewSize.Width);
             }
 
-            if(e.NewSize.Width>0)
+            if (e.NewSize.Width > 0)
             {
                 //宽度变化后刷新一次视图 修复重复点击缩略图后图片不显示的问题
                 PulishEvent();
@@ -915,7 +966,7 @@ namespace PDF_Master.Views.PageEdit
             if ((bool)TbnTwoLine.IsChecked)
             {
                 var itemwidth = (width - 140) / 2;
-                if(itemwidth<0)
+                if (itemwidth < 0)
                 {
                     itemwidth = width / 4;
                 }
@@ -943,24 +994,39 @@ namespace PDF_Master.Views.PageEdit
         /// <param name="e"></param>
         private void Grid_PreviewDragEnter(object sender, DragEventArgs e)
         {
-
-            var file = (System.Array)e.Data.GetData(DataFormats.FileDrop);
-            if (file == null)//为null 表示内部拖动 触发的
-            { 
-                return; 
+            var files = (System.Array)e.Data.GetData(DataFormats.FileDrop);
+            if (files == null)//为null 表示内部拖动 触发的
+            {
+                return;
             }
-            isDragingEnter = false;
-            foreach (string f in file)
+            else
             {
-                System.IO.FileInfo info = new System.IO.FileInfo(f);
-                //只要拖拽进来的文件里包含有pdf格式文件，就允许拖入
-                if (System.IO.Path.GetExtension(f).ToLower() == ".pdf" && info.Length > 0)
+                isDragingEnter = false;
+
+                foreach (string file in files)
                 {
-                    isDragingEnter = true;
+                    if (File.Exists(file))
+                    {
+                        if (isExtractEnter)
+                        {
+                            isDragingEnter = false;
+                            return;
+                        }
+                        else
+                        {
+                            System.IO.FileInfo info = new System.IO.FileInfo(file);
+                            //只要拖拽进来的文件里包含有pdf格式文件，就允许拖入
+                            if (System.IO.Path.GetExtension(file).ToLower() == ".pdf" && info.Length > 0)
+                            {
+                                isDragingEnter = true;
+                                isExtractEnter = false;
+                            }
+                        }
+                    }
                 }
-            }
 
-            DragDropHelper.DragEnter(this, e);
+                DragDropHelper.DragEnter(this, e);
+            }
         }
 
         private void Grid_DragLeave(object sender, DragEventArgs e)
@@ -970,7 +1036,7 @@ namespace PDF_Master.Views.PageEdit
 
         private void Grid_Drop(object sender, DragEventArgs e)
         {
-            DragDropHelper.Drop(this,e);
+            DragDropHelper.Drop(this, e);
         }
 
         private void ListBoxItem_DragLeave(object sender, DragEventArgs e)
@@ -982,13 +1048,12 @@ namespace PDF_Master.Views.PageEdit
 
         private void Border_Drop(object sender, DragEventArgs e)
         {
-
         }
 
         private async void TextBoxEx_IsVisibleChanged(object sender, DependencyPropertyChangedEventArgs e)
         {
             var text = sender as TextBox;
-            if(text!=null)
+            if (text != null)
             {
                 await Task.Delay(50);
                 text.Focus();
@@ -998,7 +1063,7 @@ namespace PDF_Master.Views.PageEdit
         private void TextBoxEx_TextChanged(object sender, TextChangedEventArgs e)
         {
             var text = sender as TextBox;
-            if(text.Visibility==Visibility.Visible&&string.IsNullOrEmpty(text.Text))
+            if (text.Visibility == Visibility.Visible && string.IsNullOrEmpty(text.Text))
             {
                 text.Focus();
             }
@@ -1024,33 +1089,32 @@ namespace PDF_Master.Views.PageEdit
                     //点击在listbox列表内,具体某一项时，上面的判断调整可能失效，需要补充条件
                     return;
                 }
-                var button =CommonHelper.FindVisualParent<Button>(visual.VisualHit);
-                if(button!=null)
+                var button = CommonHelper.FindVisualParent<Button>(visual.VisualHit);
+                if (button != null)
                 {
-                    //点击在按钮时 
+                    //点击在按钮时
                     return;
                 }
                 var combox = CommonHelper.FindVisualParent<ComboBox>(visual.VisualHit);
-                if(combox!=null)
+                if (combox != null)
                 {
-                    //点击在下拉框时 
+                    //点击在下拉框时
                     return;
                 }
                 viewModel.lostfocus(e);
             }
-
         }
 
         private void Grid_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
         {
             var visual = VisualTreeHelper.HitTest(GridHeader, Mouse.GetPosition(GridHeader));
-            if(visual==null)
+            if (visual == null)
             {
                 //点击区域不是二级菜单区域的Grid时，返回
                 return;
             }
             var menuItem = CommonHelper.FindVisualParent<ComboBoxItem>(visual.VisualHit);
-            if(menuItem!=null)
+            if (menuItem != null)
             {
                 //点击位置为下拉菜单子项时，返回
                 return;
@@ -1066,7 +1130,7 @@ namespace PDF_Master.Views.PageEdit
         {
             //因为需要获取准确的选中页面，因此把入口放在.cs代码里
             List<int> lists = new List<int>();
-            foreach(PageEditItem item in ListPageEdit.SelectedItems)
+            foreach (PageEditItem item in ListPageEdit.SelectedItems)
             {
                 lists.Add(item.PageNumber);
             }
@@ -1099,4 +1163,4 @@ namespace PDF_Master.Views.PageEdit
             e.Handled = regex.IsMatch(e.Text);
         }
     }
-}
+}