进一步优化部分界面的性能

app/Language/modules/remaining_list.py

@@ -7,7 +7,10 @@
             "description": "带班级名称的标题",
         },
         "count_label": {"name": "剩余人数：{count}", "description": "剩余人数标签文本"},
-        "group_count_label": {"name": "剩余组数：{count}", "description": "剩余组数标签文本"},
+        "group_count_label": {
+            "name": "剩余组数：{count}",
+            "description": "剩余组数标签文本",
+        },
         "no_students": {
             "name": "暂无未抽取的学生",
             "description": "没有剩余学生时的提示文本",

app/page_building/another_window.py

@@ -227,10 +227,10 @@ def create_remaining_list_window(
             # 激活窗口并置于前台
             window.raise_()
             window.activateWindow()
-            
+
             # 获取页面实例并更新数据
             page = None
-            
+
             def setup_page():
                 nonlocal page
                 page_template = window.get_page("remaining_list")
@@ -245,10 +245,10 @@ def setup_page():
                             group_index,
                             gender_index,
                         )
-            
+
             # 使用延迟调用确保内容控件已创建
             QTimer.singleShot(100, setup_page)
-            
+
             # 创建一个回调函数，用于在页面设置完成后获取页面实例
             def get_page_callback(callback):
                 def check_page():
@@ -258,13 +258,13 @@ def check_page():
                         QTimer.singleShot(50, check_page)
 
                 check_page()
-            
+
             return window, get_page_callback
         except Exception as e:
             # 如果窗口已损坏，从字典中移除并创建新窗口
             logger.error(f"激活剩余名单窗口失败: {e}")
             _window_instances.pop("remaining_list", None)
-    
+
     # 创建新窗口
     title = "剩余名单"
     window = SimpleWindowTemplate(title, width=800, height=600)

app/page_building/page_template.py

@@ -177,7 +177,8 @@ def __init__(self, page_config: dict, parent: QFrame = None):
 
         self.page_config = page_config  # 页面配置字典
         self.ui_created = False
-        self.pages = {}  # 存储页面组件
+        self.pages = {}  # 存储页面组件 (scroll areas)
+        self.page_infos = {}  # 存储页面附加信息: display, layout, loaded
         self.current_page = None  # 当前页面
         self.base_path = "app.view.settings.list_management"  # 默认基础路径
 
@@ -222,9 +223,19 @@ def add_pages(self):
         for page_name, display_name in self.page_config.items():
             self.add_page(page_name, display_name)
 
-        # 如果有页面，设置第一个页面为当前页面
-        if self.pages:
-            first_page_name = next(iter(self.pages))
+        # 如果有页面，设置第一个页面为当前页面并仅加载第一个页面的内容
+        if self.page_infos:
+            first_page_name = next(iter(self.page_infos))
+            # 延迟一点点创建第一个页面的内容，避免阻塞
+            QTimer.singleShot(
+                0,
+                lambda n=first_page_name: self._load_page_content(
+                    n,
+                    self.page_infos[n]["display"],
+                    self.page_infos[n]["scroll"],
+                    self.page_infos[n]["layout"],
+                ),
+            )
             self.switch_to_page(first_page_name)
 
     def add_page(self, page_name: str, display_name: str):
@@ -279,14 +290,12 @@ def add_page(self, page_name: str, display_name: str):
 
         # 存储滑动区域引用
         self.pages[page_name] = scroll_area
-
-        # 延迟加载实际页面组件
-        QTimer.singleShot(
-            0,
-            lambda: self._load_page_content(
-                page_name, display_name, scroll_area, inner_layout
-            ),
-        )
+        self.page_infos[page_name] = {
+            "display": display_name,
+            "scroll": scroll_area,
+            "layout": inner_layout,
+            "loaded": False,
+        }
 
     def _load_page_content(
         self,
@@ -314,17 +323,26 @@ def _load_page_content(
             widget = content_widget_class(self)
             widget.setObjectName(page_name)
 
-            # 清除加载提示
-            if inner_layout.count() > 0:
-                item = inner_layout.itemAt(0)
-                if item:
-                    inner_layout.removeItem(item)
-                    if item.widget():
-                        item.widget().deleteLater()
+            # 清除加载提示（使用安全的 takeAt 循环以避免 Qt C++ 对象提前删除问题）
+            try:
+                while inner_layout.count() > 0:
+                    item = inner_layout.takeAt(0)
+                    if not item:
+                        break
+                    w = item.widget()
+                    if w is not None:
+                        w.deleteLater()
+            except RuntimeError:
+                # 如果内部对象被底层 Qt 提前销毁，忽略并继续
+                pass
 
             # 添加实际内容到内部布局
             inner_layout.addWidget(widget)
 
+            # 标记为已加载
+            if page_name in self.page_infos:
+                self.page_infos[page_name]["loaded"] = True
+
             elapsed = time.perf_counter() - start
             logger.debug(f"加载页面组件 {page_name} 耗时: {elapsed:.3f}s")
 
@@ -335,13 +353,17 @@ def _load_page_content(
         except (ImportError, AttributeError) as e:
             print(f"无法导入页面组件 {page_name}: {e}")
 
-            # 清除加载提示
-            if inner_layout.count() > 0:
-                item = inner_layout.itemAt(0)
-                if item:
-                    inner_layout.removeItem(item)
-                    if item.widget():
-                        item.widget().deleteLater()
+            # 清除加载提示（安全地移除所有子项）
+            try:
+                while inner_layout.count() > 0:
+                    item = inner_layout.takeAt(0)
+                    if not item:
+                        break
+                    w = item.widget()
+                    if w is not None:
+                        w.deleteLater()
+            except RuntimeError:
+                pass
 
             # 创建错误页面
             error_widget = QWidget()
@@ -362,13 +384,25 @@ def _load_page_content(
             # 添加错误页面到内部布局
             inner_layout.addWidget(error_widget)
 
+            # 标记为已加载（虽然是错误页面，但不再重复尝试）
+            if page_name in self.page_infos:
+                self.page_infos[page_name]["loaded"] = True
+
             # 如果当前页面就是正在加载的页面，确保滑动区域是当前可见的
             if self.current_page == page_name:
                 self.stacked_widget.setCurrentWidget(scroll_area)
 
     def switch_to_page(self, page_name: str):
         """切换到指定页面"""
         if page_name in self.pages:
+            # 按需加载：如果尚未加载该页面的实际内容，则先加载
+            info = self.page_infos.get(page_name)
+            if info and not info.get("loaded"):
+                # 调用加载函数（同步执行），传入存储的 inner_layout
+                self._load_page_content(
+                    page_name, info["display"], info["scroll"], info["layout"]
+                )
+
             self.stacked_widget.setCurrentWidget(self.pages[page_name])
             self.pivot.setCurrentItem(page_name)
             self.current_page = page_name

app/page_building/window_template.py

@@ -119,10 +119,10 @@ def initWindow(self, title: str, width: int = 700, height: int = 500) -> None:
         custom_font = load_custom_font()
         title_font = QFont(custom_font, 9)
         self.titleBar.setFont(title_font)
-        
+
         # 确保在设置标题栏后应用当前主题和自定义字体
         self._apply_current_theme()
-        
+
         if self.parent_window is None:
             screen = QApplication.primaryScreen().availableGeometry()
             w, h = screen.width(), screen.height()
@@ -148,7 +148,7 @@ def _apply_current_theme(self) -> None:
         try:
             # 获取当前主题设置
             current_theme = readme_settings("basic_settings", "theme")
-            
+
             # 根据主题设置窗口背景色
             if current_theme == "DARK":
                 # 深色主题 - 设置深色背景
@@ -158,12 +158,17 @@ def _apply_current_theme(self) -> None:
                 # 自动主题 - 根据系统设置
                 try:
                     from darkdetect import isDark
+
                     if isDark():
                         self.setStyleSheet("background-color: #202020;")
-                        self.default_page.setStyleSheet("background-color: transparent;")
+                        self.default_page.setStyleSheet(
+                            "background-color: transparent;"
+                        )
                     else:
                         self.setStyleSheet("background-color: #ffffff;")
-                        self.default_page.setStyleSheet("background-color: transparent;")
+                        self.default_page.setStyleSheet(
+                            "background-color: transparent;"
+                        )
                 except:
                     # 如果检测失败，使用浅色主题
                     self.setStyleSheet("background-color: #ffffff;")
@@ -172,10 +177,10 @@ def _apply_current_theme(self) -> None:
                 # 浅色主题
                 self.setStyleSheet("background-color: #ffffff;")
                 self.default_page.setStyleSheet("background-color: transparent;")
-            
+
             # 应用标题栏自定义字体和颜色
             self._set_titlebar_colors()
-                
+
             logger.debug(f"窗口主题已更新为: {current_theme}")
         except Exception as e:
             logger.error(f"应用主题时出错: {e}")
@@ -188,7 +193,7 @@ def _set_titlebar_colors(self) -> None:
         try:
             # 判断是否为深色主题
             is_dark = is_dark_theme(qconfig)
-            
+
             if is_dark:
                 # 深色主题
                 title_color = "#ffffff"  # 白色文字
@@ -197,7 +202,7 @@ def _set_titlebar_colors(self) -> None:
                 # 浅色主题
                 title_color = "#000000"  # 黑色文字
                 background_color = "#ffffff"
-            
+
             # 设置标题栏颜色样式
             titlebar_style = f"""
                 QWidget {{
@@ -228,8 +233,10 @@ def _set_titlebar_colors(self) -> None:
                 }}
             """
             self.titleBar.setStyleSheet(titlebar_style)
-
-            logger.debug(f"标题栏颜色已设置: 文字色={title_color}, 背景色={background_color}")
+
+            logger.debug(
+                f"标题栏颜色已设置: 文字色={title_color}, 背景色={background_color}"
+            )
         except Exception as e:
             logger.error(f"设置标题栏颜色失败: {e}")
 

app/tools/config.py

@@ -646,7 +646,7 @@ def calculate_remaining_count(
         if group_index == 1:  # 全部小组
             # 获取所有小组列表
             group_list = get_group_list(class_name)
-            
+
             # 计算已被排除的小组数量
             excluded_count = 0
             for group_name in group_list:
@@ -656,7 +656,7 @@ def calculate_remaining_count(
                     and drawn_counts[group_name] >= half_repeat
                 ):
                     excluded_count += 1
-            
+
             # 计算实际剩余组数
             return max(0, len(group_list) - excluded_count)
         else:
@@ -672,7 +672,7 @@ def calculate_remaining_count(
                     if isinstance(student, dict) and "name" in student
                     else student
                 )
-                
+
                 # 如果学生已被抽取次数达到或超过设置值，则计入排除数量
                 if (
                     student_name in drawn_counts

app/tools/list.py

@@ -158,11 +158,11 @@ def get_group_members(class_name: str, group_name: str) -> List[Dict[str, Any]]:
     """
     student_list = get_student_list(class_name)
     group_members = []
-    
+
     for student in student_list:
         if student["group"] == group_name:
             group_members.append(student)
-    
+
     # 按ID排序
     group_members.sort(key=lambda x: x["id"])
     return group_members
@@ -366,7 +366,7 @@ def filter_students_data(
                             gender_index == 0 or gender == gender_filter
                         ):  # 根据性别条件过滤
                             groups_set.add(group)
-            
+
             # 对小组进行排序，按小组名称排序
             # 返回格式为 (id, name, gender, group, exist)，但小组模式下只需要小组名称
             students_data = []