图像区域添加右键菜单功能

XplorePlane/Views/Main/ViewportPanelView.xaml

@@ -41,8 +41,20 @@
         <Grid Grid.Row="1">
             <roi:PolygonRoiCanvas x:Name="RoiCanvas"
                                   ImageSource="{Binding ImageSource}"
-                                  Background="White" />
-            <!-- 测量结果浮层（已移至画布内线段附近显示） -->
+                                  Background="White">
+                <roi:PolygonRoiCanvas.ContextMenu>
+                    <ContextMenu>
+                        <MenuItem Header="放大" Click="ZoomIn_Click" />
+                        <MenuItem Header="缩小" Click="ZoomOut_Click" />
+                        <MenuItem Header="适应窗口" Click="ResetView_Click" />
+                        <Separator />
+                        <MenuItem Header="保存原始图像" Click="SaveOriginalImage_Click" />
+                        <MenuItem Header="保存结果图像" Click="SaveResultImage_Click" />
+                        <Separator />
+                        <MenuItem Header="清除所有绘制" Click="ClearAllMeasurements_Click" />
+                    </ContextMenu>
+                </roi:PolygonRoiCanvas.ContextMenu>
+            </roi:PolygonRoiCanvas>
         </Grid>
 
         <!-- 图像信息栏 -->

XplorePlane/Views/Main/ViewportPanelView.xaml.cs

@@ -1,11 +1,14 @@
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
+using System.IO;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Input;
 using System.Windows.Media;
+using System.Windows.Media.Imaging;
 using System.Windows.Shapes;
+using Microsoft.Win32;
 using XP.ImageProcessing.RoiControl.Controls;
 using XplorePlane.Events;
 using XplorePlane.ViewModels;
@@ -204,10 +207,12 @@ namespace XplorePlane.Views
                 StrokeThickness = 1.5,
                 Cursor = Cursors.Hand
             };
+            // 禁止测量点上弹出右键菜单
+            dot.SetValue(ContextMenuService.IsEnabledProperty, false);
             dot.MouseLeftButtonDown += Dot_Down;
             dot.MouseMove += Dot_Move;
             dot.MouseLeftButtonUp += Dot_Up;
-            dot.MouseRightButtonDown += Dot_RightClick;
+            dot.PreviewMouseRightButtonUp += Dot_RightClick;
             return dot;
         }
 
@@ -320,5 +325,81 @@ namespace XplorePlane.Views
         }
 
         #endregion
+
+        #region 右键菜单
+
+        private void ZoomIn_Click(object sender, RoutedEventArgs e) => RoiCanvas.ZoomScale = Math.Min(10.0, RoiCanvas.ZoomScale * 1.2);
+        private void ZoomOut_Click(object sender, RoutedEventArgs e) => RoiCanvas.ZoomScale = Math.Max(0.1, RoiCanvas.ZoomScale / 1.2);
+        private void ResetView_Click(object sender, RoutedEventArgs e) => RoiCanvas.ResetView();
+
+        private void ClearAllMeasurements_Click(object sender, RoutedEventArgs e)
+        {
+            if (_measureOverlay != null)
+            {
+                _measureOverlay.Children.Clear();
+                _groups.Clear();
+            }
+            _pendingDot = null;
+            _pendingPoint = null;
+
+            if (DataContext is ViewportPanelViewModel vm)
+            {
+                vm.ResetMeasurementState();
+                vm.ImageInfo = "已清除所有测量";
+            }
+        }
+
+        private void SaveOriginalImage_Click(object sender, RoutedEventArgs e)
+        {
+            if (DataContext is not ViewportPanelViewModel vm || vm.ImageSource is not BitmapSource bitmap)
+            {
+                MessageBox.Show("当前没有可保存的图像", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+                return;
+            }
+            SaveBitmapToFile(bitmap, "保存原始图像");
+        }
+
+        private void SaveResultImage_Click(object sender, RoutedEventArgs e)
+        {
+            // 截取整个图像区域（含测量标注覆盖层）
+            var target = FindChildByName<Canvas>(RoiCanvas, "mainCanvas");
+            if (target == null)
+            {
+                MessageBox.Show("当前没有可保存的图像", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+                return;
+            }
+
+            var width = (int)target.ActualWidth;
+            var height = (int)target.ActualHeight;
+            if (width == 0 || height == 0) return;
+
+            var rtb = new RenderTargetBitmap(width, height, 96, 96, PixelFormats.Pbgra32);
+            rtb.Render(target);
+            SaveBitmapToFile(rtb, "保存结果图像");
+        }
+
+        private static void SaveBitmapToFile(BitmapSource bitmap, string title)
+        {
+            var dialog = new SaveFileDialog
+            {
+                Title = title,
+                Filter = "PNG 图像|*.png|BMP 图像|*.bmp|JPEG 图像|*.jpg",
+                DefaultExt = ".png"
+            };
+            if (dialog.ShowDialog() != true) return;
+
+            BitmapEncoder encoder = System.IO.Path.GetExtension(dialog.FileName).ToLower() switch
+            {
+                ".bmp" => new BmpBitmapEncoder(),
+                ".jpg" or ".jpeg" => new JpegBitmapEncoder(),
+                _ => new PngBitmapEncoder()
+            };
+            encoder.Frames.Add(BitmapFrame.Create(bitmap));
+
+            using var fs = new FileStream(dialog.FileName, FileMode.Create);
+            encoder.Save(fs);
+        }
+
+        #endregion
     }
 }