Fix incorrect Map.visibleRegion when all the map is visible

Change-Id: I9d532416e0e6dd06f84216d97bcf160e3e8e43be
Task-number: QTBUG-57690
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>

1 files changed, 11 insertions, 1 deletions

diff --git a/src/location/declarativemaps/qdeclarativegeomap.cpp b/src/location/declarativemaps/qdeclarativegeomap.cpp
index 9f4dae3f..572745fd 100644
--- a/src/location/declarativemaps/qdeclarativegeomap.cpp
+++ b/src/location/declarativemaps/qdeclarativegeomap.cpp
@@ -1324,7 +1324,17 @@ QGeoShape QDeclarativeGeoMap::visibleRegion() const
     for (const QDoubleVector2D &c: visibleRegion)
         path.addCoordinate(m_map->geoProjection().wrappedMapProjectionToGeo(c));
 
-    return path.boundingGeoRectangle();
+    QGeoRectangle vr = path.boundingGeoRectangle();
+
+    bool empty = vr.topLeft().latitude() == vr.bottomRight().latitude() ||
+            qFuzzyCompare(vr.topLeft().longitude(), vr.bottomRight().longitude()); // QTBUG-57690
+
+    if (empty) {
+        vr.setTopLeft(QGeoCoordinate(vr.topLeft().latitude(), -180));
+        vr.setBottomRight(QGeoCoordinate(vr.bottomRight().latitude(), 180));
+    }
+
+    return vr;
 }
 
 /*!