fix

 <!--
  * @Date: 2025-01-22 11:40:12
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-02-08 14:14:42
+ * @LastEditTime: 2025-02-08 14:27:04
  * @FilePath: /map-demo/src/views/mapCutter.vue
  * @Description: 文件描述
 -->
@@ -148,31 +148,33 @@ const triggerFileInput = () => {
 };
 
 const handleKeydown = (e) => { // 键盘控制
-  switch(e.key) {
-    case 'ArrowUp':
-      moveImage('up')
-      break
-    case 'ArrowDown':
-      moveImage('down')
-      break
-    case 'ArrowLeft':
-      moveImage('left')
-      break
-    case 'ArrowRight':
-      moveImage('right')
-      break
-    case '+':
-      scaleImage(1.01)
-      break
-    case '-':
-      scaleImage(0.99)
-      break
-    case 'r':
-      rotateMap(10)
-      break
-    case 'R':
-      rotateMap(-10)
-      break
+  if (e.shiftKey && e.key === '=') {
+    // 一些键盘可能需要 Shift 才能输入 `+`，但 `e.key` 实际上是 `=`
+    scaleImage(1.01)
+  } else {
+    switch(e.key) {
+      case 'ArrowUp':
+        moveImage('up')
+        break
+      case 'ArrowDown':
+        moveImage('down')
+        break
+      case 'ArrowLeft':
+        moveImage('left')
+        break
+      case 'ArrowRight':
+        moveImage('right')
+        break
+      case '-':
+        scaleImage(0.99)
+        break
+      case 'r':
+        rotateMap(10)
+        break
+      case 'R':
+        rotateMap(-10)
+        break
+    }
   }
 }