Optionally play sounds when toggling screen curtain (#10611)

* Add scree curtain sounds, ensure that it only enables once

* Add Andre Louis as a contributor

* Use mono sounds instead

* Update user guide, review actions

contributors.txt

@@ -232,3 +232,4 @@ Luke Davis
 Larry Wang
 Doug Lee
 Doc Mehta
+Andre Louis

source/globalCommands.py

@@ -2459,10 +2459,11 @@ def _enableScreenCurtain(doEnable: bool = True):
 					enableMessage = _("Temporary Screen curtain, enabled until next restart")
 
 				try:
-					vision.handler.initializeProvider(
-						screenCurtainProviderInfo,
-						temporary=tempEnable,
-					)
+					if not alreadyRunning:
+						vision.handler.initializeProvider(
+							screenCurtainProviderInfo,
+							temporary=tempEnable,
+						)
 				except Exception:
 					log.error("Screen curtain initialization error", exc_info=True)
 					# Translators: Reported when the screen curtain could not be enabled.

source/visionEnhancementProviders/screenCurtain.py

@@ -18,6 +18,7 @@
 import gui
 from logHandler import log
 from typing import Optional, Type
+import nvwave
 
 
 class MAGCOLOREFFECT(Structure):
@@ -100,9 +101,16 @@ class Magnification:
 )
 
 
+# Translators: Description for a screen curtain setting to play sounds when enabling/disabling the curtain
+playToggleSoundsCheckBoxText = _("&Play sound when toggling {screenCurtainTranslatedName}").format(
+	screenCurtainTranslatedName=screenCurtainTranslatedName
+)
+
+
 class ScreenCurtainSettings(providerBase.VisionEnhancementProviderSettings):
 
 	warnOnLoad: bool
+	playToggleSounds: bool
 
 	@classmethod
 	def getId(cls) -> str:
@@ -119,9 +127,13 @@ def _get_supportedSettings(self) -> SupportedSettingType:
 				warnOnLoadCheckBoxText,
 				defaultVal=True
 			),
+			BooleanDriverSetting(
+				"playToggleSounds",
+				playToggleSoundsCheckBoxText,
+				defaultVal=True
+			),
 		]
 
-
 warnOnLoadText = _(
 	# Translators: A warning shown when activating the screen curtain.
 	# the translation of "Screen Curtain" should match the "translated name"
@@ -314,6 +326,11 @@ def __init__(self):
 		Magnification.MagInitialize()
 		Magnification.MagSetFullscreenColorEffect(TRANSFORM_BLACK)
 		Magnification.MagShowSystemCursor(False)
+		if self.getSettings().playToggleSounds:
+			try:
+				nvwave.playWaveFile(r"waves\screenCurtainOn.wav")
+			except Exception:
+				log.exception()
 
 	def terminate(self):
 		log.debug(f"Terminating ScreenCurtain")
@@ -322,6 +339,11 @@ def terminate(self):
 		finally:
 			Magnification.MagShowSystemCursor(True)
 			Magnification.MagUninitialize()
+			if self.getSettings().playToggleSounds:
+				try:
+					nvwave.playWaveFile(r"waves\screenCurtainOff.wav")
+				except Exception:
+					log.exception()
 
 	def registerEventExtensionPoints(self, extensionPoints):
 		# The screen curtain isn't interested in any events

user_docs/en/userGuide.t2t

@@ -1396,7 +1396,10 @@ If you are sure, you can choose the Yes button to enable the screen curtain.
 If you no longer want to see this warning message every time, you can change this behavior in the dialog that displays the message.
 You can always restore the warning by checking the "Always show a warning when loading Screen Curtain" check box next to the "Make screen black" check box.
 
-To toggle the SCreen Curtain from anywhere, please assign a custom gesture using the [Input Gestures dialog #InputGestures].
+To toggle the Screen Curtain from anywhere, please assign a custom gesture using the [Input Gestures dialog #InputGestures].
+
+By default, sounds are played when the Screen Curtain is toggled.
+When you want to change this behavior, you can uncheck the "Play sound when toggling Screen Curtain" check box.
 
 ==== Settings for third party visual aids ====[VisionSettingsThirdPartyVisualAids]
 Additional vision enhancement providers can be provided in [NVDA add-ons #AddonsManager].