修改深色模式下结果图片显示异常

app/device/connection.py

@@ -25,6 +25,7 @@ from typing import TYPE_CHECKING
 from app.ucd_domain import ConnectionChanged, UcdError
 from drivers.caSerail import CASerail
 from drivers.ucd_driver import DeviceInfo
+from app.views.modern_styles import get_theme_palette
 
 from typing import TYPE_CHECKING
 
@@ -189,8 +190,7 @@ class ConnectionController:
             self.disconnect_ucd()
             self.disconnect_ca()
             self._enable_widgets()
-            self._app.ucd_status_indicator.config(bg="gray")
-            self._app.ca_status_indicator.config(bg="gray")
+            self._app.refresh_connection_indicators()
             self._app.status_var.set("串口连接已断开")
         except Exception as exc:  # noqa: BLE001
             self._log(f"断开连接时发生错误: {exc}", level="info")
@@ -212,10 +212,7 @@ class ConnectionController:
             )
         app.ca_com_combo.config(values=com_ports)
 
-        if hasattr(app, "ucd_status_indicator"):
-            app.ucd_status_indicator.config(bg="gray")
-        if hasattr(app, "ca_status_indicator"):
-            app.ca_status_indicator.config(bg="gray")
+        app.refresh_connection_indicators()
 
         app.update_config()
 
@@ -254,7 +251,45 @@ def check_com_connections(self: "PQAutomationApp"):
 
 
 def update_connection_indicator(self: "PQAutomationApp", indicator, connected):
-    indicator.config(bg="green" if connected else "red")
+    _draw_connection_indicator(indicator, "green" if connected else "red")
+
+
+def refresh_connection_indicators(self: "PQAutomationApp"):
+    """根据当前设备状态重画 UCD / CA 指示灯。"""
+    if hasattr(self, "ucd_status_indicator"):
+        ucd_connected = bool(getattr(self.ucd, "status", False))
+        _draw_connection_indicator(
+            self.ucd_status_indicator,
+            "green" if ucd_connected else "gray",
+        )
+    if hasattr(self, "ca_status_indicator"):
+        ca_connected = getattr(self, "ca", None) is not None
+        _draw_connection_indicator(
+            self.ca_status_indicator,
+            "green" if ca_connected else "gray",
+        )
+
+
+def _draw_connection_indicator(canvas, state: str) -> None:
+    palette = get_theme_palette()
+    color_map = {
+        "green": "#2ECC71",
+        "red": "#E74C3C",
+        "gray": "#9AA3AD",
+    }
+    fill = color_map.get(state, state)
+    border = palette["border"]
+    bg = palette["card_bg"]
+    try:
+        canvas.configure(bg=bg, highlightbackground=border, highlightcolor=border)
+        canvas.delete("all")
+        # 保持原有视觉：方形状态灯（红/绿/灰）
+        canvas.create_rectangle(0, 0, 15, 15, fill=fill, outline=border, width=1)
+    except Exception:
+        try:
+            canvas.config(bg=fill)
+        except Exception:
+            pass
 
 
 def check_port_connection(self: "PQAutomationApp", is_ucd=True):
@@ -323,6 +358,7 @@ __all__ = [
     "refresh_com_ports",
     "check_com_connections",
     "update_connection_indicator",
+    "refresh_connection_indicators",
     "check_port_connection",
     "enable_com_widgets",
     "disconnect_com_connections",
@@ -338,6 +374,7 @@ class DeviceConnectionMixin:
     refresh_com_ports = refresh_com_ports
     check_com_connections = check_com_connections
     update_connection_indicator = update_connection_indicator
+    refresh_connection_indicators = refresh_connection_indicators
     check_port_connection = check_port_connection
     enable_com_widgets = enable_com_widgets
     disconnect_com_connections = disconnect_com_connections