鼠标滚轮放大缩小右栏的大图

src/WpfEditor/MainWindow.xaml.cs

@@ -1,10 +1,11 @@
 using Microsoft.Win32;
 using Newtonsoft.Json.Linq;
-using System;
 using System.IO;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Media.Imaging;
+using System.Windows.Input;
+using System.Windows.Media;
 
 namespace WpfEditor
 {
@@ -12,12 +13,16 @@ namespace WpfEditor
     {
         private string _currentFilePath = null;
         private bool _textChanged = false;
+        private double _imageZoomFactor = 1.0; // 添加图片缩放因子
 
         public MainWindow()
         {
             InitializeComponent();
             Editor.TextChanged += Editor_TextChanged;
             Editor.CursorPositionChanged += Editor_CursorPositionChanged;
+            
+            // 添加图片查看器的鼠标滚轮事件
+            ImageViewer.PreviewMouseWheel += ImageViewer_PreviewMouseWheel;
 
             //var c = new TextCharacter('c');
             //var ls = new List<TextCharacter>();
@@ -26,6 +31,46 @@ namespace WpfEditor
             //var a = 1;
 
         }
+        
+        // 添加鼠标滚轮事件处理
+        private void ImageViewer_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
+        {
+            // 检查Ctrl键是否按下
+            if (Keyboard.Modifiers == ModifierKeys.Control)
+            {
+                // 根据滚轮方向调整缩放因子
+                if (e.Delta > 0)
+                {
+                    // 向上滚动，放大图片
+                    _imageZoomFactor *= 1.1;
+                }
+                else
+                {
+                    // 向下滚动，缩小图片
+                    _imageZoomFactor /= 1.1;
+                }
+                
+                // 限制缩放范围
+                _imageZoomFactor = Math.Max(0.1, Math.Min(_imageZoomFactor, 10.0));
+                
+                // 应用缩放
+                ApplyImageZoom();
+                
+                // 标记事件已处理
+                e.Handled = true;
+            }
+        }
+        
+        // 应用图片缩放
+        private void ApplyImageZoom()
+        {
+            if (ImageViewer.Source != null)
+            {
+                // 创建缩放变换
+                ScaleTransform scaleTransform = new ScaleTransform(_imageZoomFactor, _imageZoomFactor);
+                ImageViewer.RenderTransform = scaleTransform;
+            }
+        }
 
         private void Editor_TextChanged(object sender, EventArgs e)
         {
@@ -276,6 +321,9 @@ namespace WpfEditor
             if (image != null)
             {
                 ImageViewer.Source = image;
+                // 重置缩放因子
+                //_imageZoomFactor = 1.0;
+                ApplyImageZoom();
                 // 确保图片容器可见
                 ImageContainer.Visibility = Visibility.Visible;
             }