2 files changed, 9 insertions, 8 deletions
diff --git a/platform/qt/include/qmapbox.hpp b/platform/qt/include/qmapbox.hpp
index 5a5198108c..369890343f 100644
--- a/platform/qt/include/qmapbox.hpp
+++ b/platform/qt/include/qmapbox.hpp
@@ -112,12 +112,16 @@ struct Q_MAPBOXGL_EXPORT CustomLayerRenderParameters {
     double zoom;
     double bearing;
     double pitch;
-    double altitude;
+    double fieldOfView;
 };
 
-typedef void (*CustomLayerInitializeFunction)(void* context) ;
-typedef void (*CustomLayerRenderFunction)(void* context, const CustomLayerRenderParameters&);
-typedef void (*CustomLayerDeinitializeFunction)(void* context);
+class Q_MAPBOXGL_EXPORT CustomLayerHostInterface {
+public:
+    virtual ~CustomLayerHostInterface() = default;
+    virtual void initialize() = 0;
+    virtual void render(const CustomLayerRenderParameters&) = 0;
+    virtual void deinitialize() = 0;
+};
 
 } // namespace QMapbox
 
diff --git a/platform/qt/include/qmapboxgl.hpp b/platform/qt/include/qmapboxgl.hpp
index b5676fbedd..79eb672d1f 100644
--- a/platform/qt/include/qmapboxgl.hpp
+++ b/platform/qt/include/qmapboxgl.hpp
@@ -230,10 +230,7 @@ public:
     void removeImage(const QString &name);
 
     void addCustomLayer(const QString &id,
-        QMapbox::CustomLayerInitializeFunction,
-        QMapbox::CustomLayerRenderFunction,
-        QMapbox::CustomLayerDeinitializeFunction,
-        void* context,
+        QScopedPointer<QMapbox::CustomLayerHostInterface>& host,
         const QString& before = QString());
     void addLayer(const QVariantMap &params, const QString& before = QString());
     bool layerExists(const QString &id);