界面优化

src/gui/panels/visualization_panel.py

@@ -1215,9 +1215,19 @@ class VisualizationPanel(QWidget):
         if work_dir:
             QTimer.singleShot(100, self.scan_work_directory)
 
+    def _get_default_work_dir(self):
+        """获取 work_dir，优先用 panel 自身缓存的，否则尝试从主窗口取"""
+        if hasattr(self, 'work_dir') and self.work_dir:
+            return str(self.work_dir)
+        mw = self.window()
+        if mw and hasattr(mw, 'work_dir') and mw.work_dir:
+            return str(mw.work_dir)
+        return ""
+
     def browse_work_dir(self):
         """浏览工作目录"""
-        dir_path = QFileDialog.getExistingDirectory(self, "选择工作目录")
+        default = self._get_default_work_dir()
+        dir_path = QFileDialog.getExistingDirectory(self, "选择工作目录", default)
         if dir_path:
             self.work_dir = dir_path
             self.work_dir_edit.setText(dir_path)
@@ -1225,7 +1235,8 @@ class VisualizationPanel(QWidget):
 
     def browse_img_dir(self):
         """手动浏览图像目录"""
-        dir_path = QFileDialog.getExistingDirectory(self, "选择图像目录")
+        default = self._get_default_work_dir()
+        dir_path = QFileDialog.getExistingDirectory(self, "选择图像目录", default)
         if dir_path:
             self.img_dir_edit.setText(dir_path)
             self.image_tree.scan_directory(dir_path)