前端: 添加加载组件

frontend/src/renderer/components/Loading.jsx

@@ -0,0 +1,25 @@
+import React from 'react';
+import { Spin } from 'antd';
+
+function Loading({ tip = '加载中...', fullscreen = false }) {
+  const style = fullscreen ? {
+    position: 'fixed',
+    top: 0,
+    left: 0,
+    right: 0,
+    bottom: 0,
+    display: 'flex',
+    alignItems: 'center',
+    justifyContent: 'center',
+    background: 'rgba(255,255,255,0.8)',
+    zIndex: 9999
+  } : {};
+
+  return (
+    <div style={style}>
+      <Spin size="large" tip={tip} />
+    </div>
+  );
+}
+
+export default Loading;