编辑PDF-替换图片，属性面板的预览比PDFView中图片变换的速度慢

PDF Office/ViewModels/PropertyPanel/PDFEdit/ImageEditPropertyViewModel.cs

@@ -28,15 +28,16 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
     {
         public TextEditToolContentViewModel TextEditToolContentViewModel;
         private IEventAggregator events;
+
         /// <summary>
         /// 用于区分事件的唯一码
         /// </summary>
         private string unicode;
+
         #region 快捷键
+
         private void ShortCut_KeyDown(object sender, KeyEventArgs e)
         {
-
-
             if (e.Key == Key.Escape)
             {
                 if (PDFViewer != null)
@@ -44,33 +45,34 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
                     if (PDFViewer.ToolManager != null && IsCrop == true)
                     {
                         CancelCropImg();
-
-                    } 
-                   
+                    }
                 }
             }
-            else if(e.Key==Key.Enter)
+            else if (e.Key == Key.Enter)
             {
                 CropImg();
             }
-
-
         }
 
+        #endregion 快捷键
 
-        #endregion
         #region 属性和变量
+
         //防止自动保存属性值
         private bool isCanSave = false;
-        public event EventHandler ClearCheckedAglin;
 
+        public event EventHandler ClearCheckedAglin;
 
         #region 是否为多选内容
+
         private bool _isMultiSelectImage = false;
-        public bool IsMultiSelectImage { get { return _isMultiSelectImage; } set { SetProperty(ref _isMultiSelectImage, value); } }
-        #endregion
-       
-       private string _opacity1= "Opacity";
+        public bool IsMultiSelectImage
+        { get { return _isMultiSelectImage; } set { SetProperty(ref _isMultiSelectImage, value); } }
+
+        #endregion 是否为多选内容
+
+        private string _opacity1 = "Opacity";
+
         public string Opacity
         {
             get { return _opacity1; }
@@ -79,30 +81,34 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
 
         //不透明度
         private double _opacity;
+
         public double OpacityUI
         {
             get { return _opacity; }
             set { SetProperty(ref _opacity, value); }
         }
+
         private int _OpacitySelectedIndex = 1;
+
         public int OpacitySelectedIndex
         {
             get { return _OpacitySelectedIndex; }
             set { SetProperty(ref _OpacitySelectedIndex, value); }
         }
+
         private double _transpent;
+
         public double Transpent
         {
             get { return _transpent; }
             set
             {
                 SetProperty(ref _transpent, value);
-                if (Transpent == 100|| Transpent == 75||Transpent == 50|| (Transpent == 25))
+                if (Transpent == 100 || Transpent == 75 || Transpent == 50 || (Transpent == 25))
                 {
                     TextEditEvent.Transparency = (int)((_transpent * 255) / 100.0);
                     TextEditEvent.UpdatePDFEditByEventArgs();
                     OpacityUI = _transpent / 100.0;
-                  
                 }
                 else
                 {
@@ -110,11 +116,13 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
                 }
             }
         }
+
         //是否为图片裁剪状态
         private bool _isCrop = false;
-        public bool IsCrop { get { return _isCrop; } set { SetProperty(ref _isCrop, value); } }
-        public  TextEditToolContentViewModel _viewModel1;
 
+        public bool IsCrop
+        { get { return _isCrop; } set { SetProperty(ref _isCrop, value); } }
+        public TextEditToolContentViewModel _viewModel1;
 
         //public ImageEditPropertyViewModel(TextEditToolContentViewModel viewModel1)
         //{
@@ -122,16 +130,15 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
         //    _viewModel1.PropertyChanged += OnViewModel1PropertyChanged;
         //}
 
-     
         private void OnViewModel1PropertyChanged(object sender, PropertyChangedEventArgs e)
         {
             if (e.PropertyName == "flg")
             {
                 IsCrop = _viewModel1.flg;
             }
-            if(e.PropertyName== "ReplaceImgflg")
+            if (e.PropertyName == "ReplaceImgflg")
             {
-                if(_viewModel1.ReplaceImgflg==true)
+                if (_viewModel1.ReplaceImgflg == true)
                 {
                     ReplaceImg();
                     _viewModel1.ReplaceImgflg = false;
@@ -157,18 +164,23 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
 
         //选中的图像
         private System.Windows.Media.Imaging.BitmapSource _currentImg;
-        public System.Windows.Media.Imaging.BitmapSource CurrentImg { get { return _currentImg; } set { SetProperty(ref _currentImg, value); } }
 
+        public System.Windows.Media.Imaging.BitmapSource CurrentImg
+        { get { return _currentImg; } set { SetProperty(ref _currentImg, value); } }
 
-        #endregion
+        #endregion 属性和变量
 
         #region Command
+
         //替换
         public DelegateCommand ReplaceImgCommand { get; set; }
+
         //导出
         public DelegateCommand ExportImgCommand { get; set; }
+
         //裁剪
         public DelegateCommand CropImgCommand { get; set; }
+
         //对齐
         public DelegateCommand<object> ImgAlignCheckedCommand { get; set; }
 
@@ -183,16 +195,19 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
 
         //上下翻转
         public DelegateCommand UpsidedownCommand { get; set; }
+
         //裁剪状态
         public DelegateCommand CropModeCommand { get; set; }
+
         //取消裁剪状态
         public DelegateCommand CancelCropCommand { get; set; }
 
         //还原裁剪状态
         public DelegateCommand RestoreCropCommand { get; set; }
-       
+
         //添加文本
         public DelegateCommand AddTextCommand { get; set; }
+
         //添加图片
         public DelegateCommand AddImgCommand { get; set; }
 
@@ -200,7 +215,8 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
         public DelegateCommand TranspentslidCommand { get; set; }
 
         public DelegateCommand EditImgModeCommand { get; set; }
-        #endregion
+
+        #endregion Command
 
         public ImageEditPropertyViewModel(IEventAggregator eventAggregator)
         {
@@ -208,16 +224,16 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
             events = eventAggregator;
             unicode = App.mainWindowViewModel.SelectedItem.Unicode;
         }
+
         private void InitCommand()
         {
-
             AddTextCommand = new DelegateCommand(AddText);
             AddImgCommand = new DelegateCommand(AddImg);
             ReplaceImgCommand = new DelegateCommand(ReplaceImg);
             ExportImgCommand = new DelegateCommand(ExportImg);
             CropImgCommand = new DelegateCommand(CropImg);
             ImgAlignCheckedCommand = new DelegateCommand<object>(ImgAlignChecked);
-            TranspentslidCommand = new DelegateCommand(Transpentslid);           
+            TranspentslidCommand = new DelegateCommand(Transpentslid);
             AntiClockwiseCommand = new DelegateCommand(AntiClockwise);
             ClockwiseCommand = new DelegateCommand(Clockwise);
             FlipleftrightCommand = new DelegateCommand(Flipleftright);
@@ -225,14 +241,13 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
             CropModeCommand = new DelegateCommand(CropMode);
             CancelCropCommand = new DelegateCommand(CancelCropImg);
             RestoreCropCommand = new DelegateCommand(RestoreCropImg);
-            EditImgModeCommand = new DelegateCommand(EditImgMode);      
+            EditImgModeCommand = new DelegateCommand(EditImgMode);
         }
 
         #region Command实现
-     
 
         //不透明度滑动左键松开
-       private void Transpentslid()
+        private void Transpentslid()
         {
             if (TextEditEvent != null && isCanSave)
             {
@@ -247,19 +262,17 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
                 }
                 else
                 {
-                    TextEditEvent.Transparency = (int)((_transpent * 255)/100.0);
+                    TextEditEvent.Transparency = (int)((_transpent * 255) / 100.0);
                     TextEditEvent.UpdatePDFEditByEventArgs();
                     OpacityUI = _transpent / 100.0;
                     TextEditEvent.SaveClip();
                 }
- 
             }
         }
 
         //点击编辑按钮，暂时保留
         private void EditImgMode()
         {
-
         }
 
         //添加文本模式
@@ -284,6 +297,7 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
                 }
             }
         }
+
         /// <summary>
         /// 压缩
         /// </summary>
@@ -339,7 +353,6 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
             }
         }
 
-
         /// <summary>
         ///  根据图片数据判断图片类型
         /// </summary>
@@ -363,7 +376,6 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
                 }
                 catch
                 {
-
                     extension = FileExtension.VALIDFILE;
                 }
                 return extension;
@@ -382,7 +394,6 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
             }
         }
 
-
         //进入裁剪模式
         private void CropMode()
         {
@@ -471,20 +482,18 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
                     TextEditEvent.ReplaceImagePath = openFileDialog.FileName;
                     TextEditEvent.UpdatePDFEditByEventArgs();
                     ReplaceimgTask();
-                    Transpent =100;
+                    Transpent = 100;
                 }
-            }       
+            }
         }
 
         //此处只有异步 ReplaceimgTask()才有作用
         private async void ReplaceimgTask()
         {
-            await Task.Delay(100);
+            await Task.Delay(10);
             GetImagePreView();
-
         }
 
-
         //顺时针旋转
         private void Clockwise()
         {
@@ -509,9 +518,9 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
         private void Upsidedown()
         {
             TextEditEvent.VerticalMirror = true;
-           
+
             TextEditEvent.UpdatePDFEditByEventArgs();
-              GetImagePreView();
+            GetImagePreView();
         }
 
         //旋转逻辑
@@ -533,9 +542,10 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
             }
         }
 
-        #endregion
+        #endregion Command实现
 
         #region 布局处理
+
         private void ImgAlignChecked(object obj)
         {
             if (obj != null)
@@ -545,36 +555,44 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
                     case "AlignLeft":
                         PDFViewer.SetPDFEditAligment(AlignModes.AlignLeft);
                         break;
+
                     case "AlignHorizonCenter":
                         PDFViewer.SetPDFEditAligment(AlignModes.AlignHorizonCenter);
                         break;
+
                     case "AlignRight":
                         PDFViewer.SetPDFEditAligment(AlignModes.AlignRight);
                         break;
+
                     case "DistributeHorizontal":
                         PDFViewer.SetPDFEditAligment(AlignModes.DistributeHorizontal);
                         break;
+
                     case "AlignTop":
                         PDFViewer.SetPDFEditAligment(AlignModes.AlignTop);
                         break;
+
                     case "AlignVerticalCenter":
                         PDFViewer.SetPDFEditAligment(AlignModes.AlignVerticalCenter);
                         break;
+
                     case "AlignBottom":
                         PDFViewer.SetPDFEditAligment(AlignModes.AlignBottom);
                         break;
+
                     case "DistributeVertical":
                         PDFViewer.SetPDFEditAligment(AlignModes.DistributeVertical);
                         break;
                 }
-
             }
         }
-        #endregion
+
+        #endregion 布局处理
+
         protected List<PDFEditEvent> TextEditEventList;
+
         public void OnNavigatedTo(NavigationContext navigationContext)
         {
-
             navigationContext.Parameters.TryGetValue<CPDFViewer>(ParameterNames.PDFViewer, out PDFViewer);
             navigationContext.Parameters.TryGetValue<List<PDFEditEvent>>(ParameterNames.AnnotEvent, out TextEditEventList);
             navigationContext.Parameters.TryGetValue<TextEditToolContentViewModel>(ParameterNames.TextEditToolContentViewModel, out TextEditToolContentViewModel);
@@ -598,14 +616,12 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
 
         private void PDFViewer_LostFocus(object sender, RoutedEventArgs e)
         {
-
             TextEditEvent.ClipImage = false;
             TextEditEvent.CancelClip();
             TextEditEvent.UpdatePDFEditByEventArgs();
             IsCrop = false;
         }
 
-
         //获取图片参数
         private void LoadedPDFEdit()
         {
@@ -643,9 +659,8 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
             }
         }
 
-
-
         #region 右键菜单
+
         //点击空白处时
         private ContextMenu EmptyStateMenu(object sender)
         {
@@ -660,6 +675,7 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
 
             return popMenu;
         }
+
         //选中图像时
         private ContextMenu SelectImgPDFEdit(object sender)
         {
@@ -697,6 +713,7 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
             customMenu.SetMenuBinding(2, RestoreCropCommand);
             return popMenu;
         }
+
         //多选图片右键
         private ContextMenu SelectMoreImage(object sender)
         {
@@ -713,17 +730,16 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
             //导出
             customMenu.SetMenuBinding(4, ExportImgCommand);
 
-
             return popMenu;
-        } 
-        #endregion
+        }
 
+        #endregion 右键菜单
 
         //左键点击逻辑
         private void PDFViewer_PDFEditActiveHandler(object sender, List<PDFEditEvent> e)
         {
             //退出编辑模式
-               IsCrop = false;
+            IsCrop = false;
             TextEditEvent.ClipImage = false;
             TextEditEvent.UpdatePDFEditByEventArgs();
         }
@@ -731,7 +747,6 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
         //右键逻辑
         private void PDFViewer_PDFEditCommandHandler(object sender, PDFEditCommand e)
         {
-            
             if (e == null)
                 return;
 
@@ -748,21 +763,19 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
                     //    {
                     //        e.PopupMenu = SelectImgPDFEdit(sender);
                     //    }
-                        
+
                     //}
-                    //else 
+                    //else
                     if (e.EditType == ComPDFKit.PDFPage.CPDFEditType.None)
                     {
                         e.PopupMenu = EmptyStateMenu(sender);
-
                     }
-           
+
                     break;
 
                 default:
                     e.DoCommand();
                     break;
-
             }
             if (e.PopupMenu != null)
             {
@@ -796,17 +809,15 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
                         CurrentImg = bitmapSource;
                         events.GetEvent<PageEditNotifyEvent>().Publish(new PageEditNotifyEventArgs(unicode));
                     }
-
                 }
             }
             catch
             {
-
             }
-         
         }
-        public bool IsNavigationTarget(NavigationContext navigationContext) { return true; }
 
+        public bool IsNavigationTarget(NavigationContext navigationContext)
+        { return true; }
 
         public void OnNavigatedFrom(NavigationContext navigationContext)
         {
@@ -820,4 +831,4 @@ namespace PDF_Master.ViewModels.PropertyPanel.PDFEdit
             PDFViewer.LostFocus -= PDFViewer_LostFocus;
         }
     }
-}
+}