Introduced accessibility mode options allowing to prevent automatic

route recalculation.

OsmAnd/res/values-ru/strings.xml

@@ -2004,4 +2004,8 @@
     <string name="access_smart_autoannounce_descr">Говорить только при изменении направления на целевую точку</string>
     <string name="access_autoannounce_period">Период автооповещений</string>
     <string name="access_autoannounce_period_descr">Минимальное время между оповещениями</string>
+    <string name="access_disable_offroute_recalc">Не менять маршрут при сходе с пути</string>
+    <string name="access_disable_offroute_recalc_descr">Предотвращает автоматический пересчет маршрута при значительном удалении от заданного пути</string>
+    <string name="access_disable_wrong_direction_recalc">Не менять маршрут при неверном направлении движения</string>
+    <string name="access_disable_wrong_direction_recalc_descr">Предотвращает автоматический пересчет маршрута при неверном направлении движения</string>
 </resources>

OsmAnd/res/values/strings.xml

@@ -10,6 +10,10 @@
     PLEASE: Have a look at http://code.google.com/p/osmand/wiki/UIConsistency, it may really improve your and our work  :-)  Thx - Hardy
     -->
 
+    <string name="access_disable_offroute_recalc">Don\'t change route when you are off the way</string>
+    <string name="access_disable_offroute_recalc_descr">Prevent automatic route recalculation when you are quite far from the right way</string>
+    <string name="access_disable_wrong_direction_recalc">Don\'t change route by wrong direction</string>
+    <string name="access_disable_wrong_direction_recalc_descr">Prevent automatic route recalculation when you are moving in wrong direction</string>
     <string name="access_smart_autoannounce">Smart autoannounce</string>
     <string name="access_smart_autoannounce_descr">Notify only when direction to the target point is changed</string>
     <string name="access_autoannounce_period">Autoannounce period</string>

OsmAnd/src/net/osmand/access/SettingsAccessibilityActivity.java

@@ -91,6 +91,11 @@ public class SettingsAccessibilityActivity extends SettingsBaseActivity {
 		});
 		cat.addPreference(autoannouncePeriodPreference);
 
+		cat.addPreference(createCheckBoxPreference(settings.DISABLE_OFFROUTE_RECALC, R.string.access_disable_offroute_recalc,
+				R.string.access_disable_offroute_recalc_descr));
+		cat.addPreference(createCheckBoxPreference(settings.DISABLE_WRONG_DIRECTION_RECALC, R.string.access_disable_wrong_direction_recalc,
+				R.string.access_disable_wrong_direction_recalc_descr));
+
 		cat.addPreference(createCheckBoxPreference(settings.ZOOM_BY_TRACKBALL, R.string.zoom_by_trackball,
 				R.string.zoom_by_trackball_descr));
 	}

OsmAnd/src/net/osmand/plus/OsmandSettings.java

@@ -787,6 +787,14 @@ public class OsmandSettings {
 	// cache of metrics constants as they are used very often
 	public final OsmandPreference<Integer> ACCESSIBILITY_AUTOANNOUNCE_PERIOD = new IntPreference("accessibility_autoannounce_period", 10000).makeGlobal().cache();
 	
+	// this value string is synchronized with settings_pref.xml preference name
+	public final OsmandPreference<Boolean> DISABLE_OFFROUTE_RECALC =
+		new BooleanAccessibilityPreference("disable_offroute_recalc", false).makeGlobal();
+	
+	// this value string is synchronized with settings_pref.xml preference name
+	public final OsmandPreference<Boolean> DISABLE_WRONG_DIRECTION_RECALC =
+		new BooleanAccessibilityPreference("disable_wrong_direction_recalc", false).makeGlobal();
+	
 	// this value string is synchronized with settings_pref.xml preference name
 	public final OsmandPreference<Boolean> ZOOM_BY_TRACKBALL =
 			new BooleanAccessibilityPreference("zoom_by_trackball", false).makeGlobal();

OsmAnd/src/net/osmand/plus/routing/RoutingHelper.java

@@ -315,7 +315,7 @@ public class RoutingHelper {
 				// >100m off current route (sideways)
 				if (currentRoute > 0) {
 					double dist = getOrthogonalDistance(currentLocation, routeNodes.get(currentRoute - 1), routeNodes.get(currentRoute));
-					if (dist > 1.7 * posTolerance) {
+					if ((!settings.DISABLE_OFFROUTE_RECALC.get()) && (dist > (1.7 * posTolerance))) {
 						log.info("Recalculate route, because correlation  : " + dist); //$NON-NLS-1$
 						calculateRoute = true;
 					}
@@ -329,7 +329,7 @@ public class RoutingHelper {
 				// 3. Identify wrong movement direction
 				Location next = route.getNextRouteLocation();
 				boolean wrongMovementDirection = checkWrongMovementDirection(currentLocation, next);
-				if (wrongMovementDirection && currentLocation.distanceTo(routeNodes.get(currentRoute)) >  2 * posTolerance) {
+				if ((!settings.DISABLE_WRONG_DIRECTION_RECALC.get()) && wrongMovementDirection && (currentLocation.distanceTo(routeNodes.get(currentRoute)) > (2 * posTolerance))) {
 					log.info("Recalculate route, because wrong movement direction: " + currentLocation.distanceTo(routeNodes.get(currentRoute))); //$NON-NLS-1$
 					calculateRoute = true;
 				}