修复流程图编辑器界面及初步的功能

XplorePlane/ViewModels/ImageProcessing/PipelineEditorViewModel.cs

@@ -60,6 +60,7 @@ namespace XplorePlane.ViewModels
             SaveAsPipelineCommand = new DelegateCommand(async () => await SaveAsPipelineAsync());
             DeletePipelineCommand = new DelegateCommand(async () => await DeletePipelineAsync());
             LoadPipelineCommand = new DelegateCommand(async () => await LoadPipelineAsync());
+            LoadImageCommand = new DelegateCommand(LoadImage);
             OpenToolboxCommand = new DelegateCommand(OpenToolbox);
             MoveNodeUpCommand = new DelegateCommand<PipelineNodeViewModel>(MoveNodeUp);
             MoveNodeDownCommand = new DelegateCommand<PipelineNodeViewModel>(MoveNodeDown);
@@ -88,6 +89,7 @@ namespace XplorePlane.ViewModels
                 if (SetProperty(ref _sourceImage, value))
                 {
                     ExecutePipelineCommand.RaiseCanExecuteChanged();
+                    RaisePropertyChanged(nameof(DisplayImage));
                     TriggerDebouncedExecution();
                 }
             }
@@ -96,9 +98,15 @@ namespace XplorePlane.ViewModels
         public BitmapSource PreviewImage
         {
             get => _previewImage;
-            set => SetProperty(ref _previewImage, value);
+            set
+            {
+                if (SetProperty(ref _previewImage, value))
+                    RaisePropertyChanged(nameof(DisplayImage));
+            }
         }
 
+        public BitmapSource DisplayImage => PreviewImage ?? SourceImage;
+
         public string PipelineName
         {
             get => _pipelineName;
@@ -142,6 +150,7 @@ namespace XplorePlane.ViewModels
         public DelegateCommand SaveAsPipelineCommand { get; }
         public DelegateCommand DeletePipelineCommand { get; }
         public DelegateCommand LoadPipelineCommand { get; }
+        public DelegateCommand LoadImageCommand { get; }
 
         public DelegateCommand OpenToolboxCommand { get; }
 
@@ -316,6 +325,45 @@ namespace XplorePlane.ViewModels
             }
         }
 
+        private void LoadImage()
+        {
+            var dialog = new OpenFileDialog
+            {
+                Title = "加载图像",
+                Filter = "图像文件|*.bmp;*.png;*.jpg;*.jpeg;*.tif;*.tiff|所有文件|*.*"
+            };
+
+            if (dialog.ShowDialog() != true)
+                return;
+
+            try
+            {
+                LoadImageFromFile(dialog.FileName);
+            }
+            catch (Exception ex)
+            {
+                StatusMessage = $"加载图像失败：{ex.Message}";
+                _logger.Error(ex, "加载图像失败：{Path}", dialog.FileName);
+            }
+        }
+
+        internal void LoadImageFromFile(string filePath)
+        {
+            if (string.IsNullOrWhiteSpace(filePath))
+                throw new ArgumentException("图像路径不能为空", nameof(filePath));
+
+            var bitmap = new BitmapImage();
+            bitmap.BeginInit();
+            bitmap.UriSource = new Uri(filePath, UriKind.Absolute);
+            bitmap.CacheOption = BitmapCacheOption.OnLoad;
+            bitmap.EndInit();
+            bitmap.Freeze();
+
+            SourceImage = bitmap;
+            PreviewImage = bitmap;
+            StatusMessage = $"已加载图像：{Path.GetFileName(filePath)}";
+        }
+
         private void CancelExecution()
         {
             _executionCts?.Cancel();