实现加载图像到实时图像区

XplorePlane/ViewModels/ImageProcessing/PipelineEditorViewModel.cs

@@ -1,4 +1,5 @@
 using Microsoft.Win32;
+using Prism.Events;
 using Prism.Commands;
 using Prism.Mvvm;
 using System;
@@ -9,6 +10,7 @@ using System.Threading;
 using System.Threading.Tasks;
 using System.Windows.Media.Imaging;
 using XP.Common.Logging.Interfaces;
+using XplorePlane.Events;
 using XplorePlane.Models;
 using XplorePlane.Services;
 
@@ -22,6 +24,7 @@ namespace XplorePlane.ViewModels
         private readonly IImageProcessingService _imageProcessingService;
         private readonly IPipelineExecutionService _executionService;
         private readonly IPipelinePersistenceService _persistenceService;
+        private readonly IEventAggregator _eventAggregator;
         private readonly ILoggerService _logger;
 
         private PipelineNodeViewModel _selectedNode;
@@ -40,11 +43,13 @@ namespace XplorePlane.ViewModels
             IImageProcessingService imageProcessingService,
             IPipelineExecutionService executionService,
             IPipelinePersistenceService persistenceService,
+            IEventAggregator eventAggregator,
             ILoggerService logger)
         {
             _imageProcessingService = imageProcessingService ?? throw new ArgumentNullException(nameof(imageProcessingService));
             _executionService = executionService ?? throw new ArgumentNullException(nameof(executionService));
             _persistenceService = persistenceService ?? throw new ArgumentNullException(nameof(persistenceService));
+            _eventAggregator = eventAggregator ?? throw new ArgumentNullException(nameof(eventAggregator));
             _logger = logger?.ForModule<PipelineEditorViewModel>() ?? throw new ArgumentNullException(nameof(logger));
 
             PipelineNodes = new ObservableCollection<PipelineNodeViewModel>();
@@ -64,6 +69,9 @@ namespace XplorePlane.ViewModels
             OpenToolboxCommand = new DelegateCommand(OpenToolbox);
             MoveNodeUpCommand = new DelegateCommand<PipelineNodeViewModel>(MoveNodeUp);
             MoveNodeDownCommand = new DelegateCommand<PipelineNodeViewModel>(MoveNodeDown);
+
+            _eventAggregator.GetEvent<ManualImageLoadedEvent>()
+                .Subscribe(OnManualImageLoaded);
         }
 
         // ── State Properties ──────────────────────────────────────────
@@ -306,6 +314,7 @@ namespace XplorePlane.ViewModels
 
                 PreviewImage = result;
                 StatusMessage = "流水线执行完成";
+                PublishPipelinePreviewUpdated(result, StatusMessage);
             }
             catch (OperationCanceledException)
             {
@@ -362,6 +371,45 @@ namespace XplorePlane.ViewModels
             SourceImage = bitmap;
             PreviewImage = bitmap;
             StatusMessage = $"已加载图像：{Path.GetFileName(filePath)}";
+            PublishManualImageLoaded(bitmap, filePath);
+        }
+
+        internal void LoadImageFromBitmap(BitmapSource bitmap, string filePath, bool runPipeline = true)
+        {
+            if (bitmap == null)
+                throw new ArgumentNullException(nameof(bitmap));
+
+            SourceImage = bitmap;
+            PreviewImage = bitmap;
+            StatusMessage = $"已加载图像：{Path.GetFileName(filePath)}";
+            PublishManualImageLoaded(bitmap, filePath);
+
+            if (runPipeline)
+                TriggerDebouncedExecution();
+        }
+
+        private void PublishManualImageLoaded(BitmapSource bitmap, string filePath)
+        {
+            _eventAggregator.GetEvent<ManualImageLoadedEvent>()
+                .Publish(new ManualImageLoadedPayload(bitmap, filePath));
+        }
+
+        private void PublishPipelinePreviewUpdated(BitmapSource bitmap, string statusMessage)
+        {
+            if (bitmap == null) return;
+
+            _eventAggregator.GetEvent<PipelinePreviewUpdatedEvent>()
+                .Publish(new PipelinePreviewUpdatedPayload(bitmap, statusMessage));
+        }
+
+        private void OnManualImageLoaded(ManualImageLoadedPayload payload)
+        {
+            if (payload?.Image == null) return;
+            if (ReferenceEquals(SourceImage, payload.Image)) return;
+
+            SourceImage = payload.Image;
+            PreviewImage = payload.Image;
+            StatusMessage = $"已加载图像：{payload.FileName}";
         }
 
         private void CancelExecution()