Optimize brightness settings page. (#264)

Author: lihuanhuan

core/src/trezor/lvglui/scrs/homescreen.py

@@ -3187,6 +3187,15 @@ def on_click(self, event_obj):
 
 
 class BacklightSetting(AnimScreen):
+    @classmethod
+    def page_is_visible(cls) -> bool:
+        try:
+            if cls._instance is not None and cls._instance.is_visible():
+                return True
+        except Exception:
+            pass
+        return False
+
     def __init__(self, prev_scr=None):
         if not hasattr(self, "_init"):
             self._init = True

core/src/trezor/utils.py

@@ -177,7 +177,10 @@ def lcd_resume(timeouts_ms: int | None = None) -> bool:
     uart.ctrl_wireless_charge(False)
     if display.backlight() != device.get_brightness() or timeouts_ms:
         global AUTO_POWER_OFF
-        display.backlight(device.get_brightness())
+        from trezor.lvglui.scrs.homescreen import BacklightSetting
+
+        if not BacklightSetting.page_is_visible():
+            display.backlight(device.get_brightness())
         AUTO_POWER_OFF = False
         from trezor.lvglui.scrs import fingerprints