Use acconfig option

AircraftConfig/acconfig.nas

@@ -80,6 +80,7 @@ setprop("/systems/acconfig/options/wxr-server", "noaa");
 setprop("/systems/acconfig/options/welcome-skip", 0);
 setprop("/systems/acconfig/options/no-rendering-warn", 0);
 setprop("/systems/acconfig/options/save-state", 0);
+setprop("/systems/acconfig/options/hide-canvas-outside", 0);
 setprop("/systems/acconfig/options/seperate-tiller-axis", 0);
 setprop("/systems/acconfig/options/pfd-rate", 1);
 setprop("/systems/acconfig/options/nd-rate", 1);
@@ -235,6 +236,7 @@ var readSettings = func {
 	setprop("/FMGC/simbrief-username", getprop("/systems/acconfig/options/simbrief-username"));
 	setprop("/systems/atsu/atis-server", getprop("/systems/acconfig/options/atis-server"));
 	setprop("/systems/atsu/wxr-server", getprop("/systems/acconfig/options/wxr-server"));
+	setprop("/options/hide-canvas-outside", getprop("/systems/acconfig/options/hide-canvas-outside"));
 }
 
 var writeSettings = func {
@@ -249,6 +251,7 @@ var writeSettings = func {
 	setprop("/systems/acconfig/options/simbrief-username", getprop("/FMGC/simbrief-username"));
 	setprop("/systems/acconfig/options/atis-server", getprop("/systems/atsu/atis-server"));
 	setprop("/systems/acconfig/options/wxr-server", getprop("/systems/atsu/wxr-server"));
+	setprop("/systems/acconfig/options/hide-canvas-outside", getprop("/options/hide-canvas-outside"));
 	io.write_properties(getprop("/sim/fg-home") ~ "/Export/A320-family-config.xml", "/systems/acconfig/options");
 }
 

AircraftConfig/main.xml

@@ -343,6 +343,26 @@
 				<live>true</live>
 			</checkbox>
 
+			<checkbox>
+				<label>Disable Canvas in External Views</label>
+				<halign>left</halign>
+				<property>/systems/acconfig/options/hide-canvas-outside</property>
+				<binding>
+					<command>property-toggle</command>
+					<property>options/hide-canvas-outside</property>
+				</binding>
+				<binding>
+					<command>dialog-apply</command>
+				</binding>
+				<binding>
+					<command>nasal</command>
+					<script>
+					acconfig.writeSettings();
+					</script>
+				</binding>
+				<live>true</live>
+			</checkbox>
+			
 			<checkbox>
 				<!-- TODO there might be a better way to formulate this. -->
 				<label>Save States Between Sessions</label>

Models/FlightDeck/a320.flightdeck.xml

@@ -981,7 +981,10 @@
 		<object-name>dcduScreenL</object-name>
 		<object-name>dcduScreenR</object-name>
 		<condition>
-			<property>sim/current-view/internal</property>
+			<or>
+				<not><property>options/hide-canvas-outside</property></not>
+				<property>sim/current-view/internal</property>
+			</or>
 		</condition>
 	</animation>
 	

Nasal/Libraries/libraries.nas

@@ -378,9 +378,10 @@ foreach (var name; keys(input)) {
 	emesary.GlobalTransmitter.NotifyAll(notifications.FrameNotificationAddProperty.new("A320 Libraries", name, input[name]));
 }
 
+var hideCanvas = props.globals.getNode("/options/hide-canvas-outside");
 var internal = props.globals.getNode("/sim/current-view/internal");
 var toggleScreen = func() {
-	if (!internal.getValue()) {
+	if (!internal.getValue() and hideCanvas.getValue()) {
 		canvas_pfd.PFD_update.stop();
 		canvas_ecam.lowerECAM_update.stop();
 		canvas_nd.nd_update.stop();
@@ -395,6 +396,10 @@ var toggleScreen = func() {
 	}
 };
 
+setlistener("/options/hide-canvas-outside", func() {
+	toggleScreen();
+}, 0, 0);
+
 setlistener("/sim/current-view/internal", func() {
 	toggleScreen();
 }, 0, 0);