Fix HERE Plugin requesting invalid range when on high dpi mode

Apparently HERE does not support ZL 0 and 20 when using 512x512 tiles

Change-Id: Ic52f98648243ce866646d921e3fc70b494fed62c
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>

1 files changed, 12 insertions, 8 deletions

diff --git a/src/plugins/geoservices/nokia/qgeotiledmappingmanagerengine_nokia.cpp b/src/plugins/geoservices/nokia/qgeotiledmappingmanagerengine_nokia.cpp
index 6548aa2b..3613cf71 100644
--- a/src/plugins/geoservices/nokia/qgeotiledmappingmanagerengine_nokia.cpp
+++ b/src/plugins/geoservices/nokia/qgeotiledmappingmanagerengine_nokia.cpp
@@ -62,11 +62,22 @@ QGeoTiledMappingManagerEngineNokia::QGeoTiledMappingManagerEngineNokia(
     Q_UNUSED(error);
     Q_UNUSED(errorString);
 
+    int ppi = 72;
+    if (parameters.contains(QStringLiteral("here.mapping.highdpi_tiles"))) {
+        const QString param = parameters.value(QStringLiteral("here.mapping.highdpi_tiles")).toString().toLower();
+        if (param == "true")
+            ppi = 250;
+    }
+
     QGeoCameraCapabilities capabilities;
 
     capabilities.setMinimumZoomLevel(0.0);
     capabilities.setMaximumZoomLevel(20.0);
-
+    if (ppi > 72) {
+        // Zoom levels 0 and 20 are not supported for 512x512 tiles.
+        capabilities.setMinimumZoomLevel(1.0);
+        capabilities.setMaximumZoomLevel(19.0);
+    }
     setCameraCapabilities(capabilities);
 
     setTileSize(QSize(256, 256));
@@ -95,13 +106,6 @@ QGeoTiledMappingManagerEngineNokia::QGeoTiledMappingManagerEngineNokia(
     types << QGeoMapType(QGeoMapType::CarNavigationMap, tr("Car Navigation Map"), tr("Normal map view in daylight mode for car navigation"), false, false, 21);
     setSupportedMapTypes(types);
 
-    int ppi = 72;
-    if (parameters.contains(QStringLiteral("here.mapping.highdpi_tiles"))) {
-        const QString param = parameters.value(QStringLiteral("here.mapping.highdpi_tiles")).toString().toLower();
-        if (param == "true")
-            ppi = 250;
-    }
-
     QGeoTileFetcherNokia *fetcher = new QGeoTileFetcherNokia(parameters, networkManager, this, tileSize(), ppi);
     setTileFetcher(fetcher);