优化ucd调用结构

pqAutomationApp.py

@@ -9,9 +9,14 @@ import traceback
 import matplotlib
 import matplotlib.pyplot as plt
 from app_version import APP_NAME, APP_VERSION, get_app_title
-from drivers.ucd_driver import UCD323Device
-from app.ucd_domain import EventBus
-from app.services.ucd_service import SignalService
+from app.ucd import (
+    ConnectionChanged,
+    DeviceKind,
+    EventBus,
+    PatternService,
+    SignalService,
+    UCD323Device,
+)
 from app.pq.pq_config import PQConfig
 from app.pq.pq_result import PQResultStore
 from app.export import (
@@ -55,7 +60,6 @@ from app.plots.plot_gamut import PlotGamutMixin
 from app.views.chart_frame import ChartFrameMixin
 from app.config_io import ConfigIOMixin
 from app.tests.local_dimming import LocalDimmingMixin
-from app.services import PatternService
 from app.device.connection import DeviceConnectionMixin
 from app.runner.test_runner import TestRunnerMixin
 
@@ -201,6 +205,7 @@ class PQAutomationApp(
         self.create_calman_panel()
         # 创建测试类型选择区域
         self.create_test_type_frame()
+        self._setup_connection_event_handlers()
         # 创建操作按钮区域
         self.create_operation_frame()
         # 创建结果图表区域
@@ -229,6 +234,23 @@ class PQAutomationApp(
             anchor=tk.E,
         ).pack(side=tk.RIGHT)
 
+    def _setup_connection_event_handlers(self) -> None:
+        """订阅连接事件，驱动 UCD / CA 指示灯（替代轮询 controller.status）。"""
+
+        def on_connection_changed(evt: ConnectionChanged) -> None:
+            if evt.device is DeviceKind.UCD:
+                indicator = getattr(self, "ucd_status_indicator", None)
+            elif evt.device is DeviceKind.CA:
+                indicator = getattr(self, "ca_status_indicator", None)
+            else:
+                return
+            if indicator is None:
+                return
+            state = "green" if evt.connected else "gray"
+            self._dispatch_ui(self.update_connection_indicator, indicator, state)
+
+        self.event_bus.subscribe(ConnectionChanged, on_connection_changed)
+
     def _dispatch_ui(self, fn, *args, **kwargs):
         """把 ``fn(*args, **kwargs)`` 调度到 Tk 主线程执行。