Fixed updating maps style

drape_frontend/backend_renderer.cpp

@@ -148,8 +148,8 @@ void BackendRenderer::AcceptMessage(ref_ptr<Message> message)
   case Message::GuiRecache:
     {
       ref_ptr<GuiRecacheMessage> msg = message;
-      RecacheGui(msg->GetInitInfo(), msg->NeedResetOldGui());
-
+      m_lastWidgetsInfo = msg->GetInitInfo();
+      RecacheGui(m_lastWidgetsInfo, msg->NeedResetOldGui());
 #ifdef RENDER_DEBUG_INFO_LABELS
       RecacheDebugLabels();
 #endif
@@ -335,6 +335,10 @@ void BackendRenderer::AcceptMessage(ref_ptr<Message> message)
     {
       m_texMng->OnSwitchMapStyle();
       RecacheMapShapes();
+      RecacheGui(m_lastWidgetsInfo, false /* needResetOldGui */);
+#ifdef RENDER_DEBUG_INFO_LABELS
+      RecacheDebugLabels();
+#endif
       m_trafficGenerator->InvalidateTexturesCache();
       m_transitBuilder->RebuildSchemes(m_texMng);
       break;

drape_frontend/backend_renderer.hpp

@@ -124,6 +124,8 @@ private:
 
   drape_ptr<MetalineManager> m_metalineManager;
 
+  gui::TWidgetsInitInfo m_lastWidgetsInfo;
+
 #ifdef DEBUG
   bool m_isTeardowned;
 #endif

drape_frontend/drape_engine.cpp

@@ -369,17 +369,9 @@ void DrapeEngine::InvalidateRect(m2::RectD const & rect)
 
 void DrapeEngine::UpdateMapStyle()
 {
-  // Update map style.
-  {
-    UpdateMapStyleMessage::Blocker blocker;
-    m_threadCommutator->PostMessage(ThreadsCommutator::RenderThread,
-                                    make_unique_dp<UpdateMapStyleMessage>(blocker),
-                                    MessagePriority::High);
-    blocker.Wait();
-  }
-
-  // Recache gui after updating of style.
-  RecacheGui(false);
+  m_threadCommutator->PostMessage(ThreadsCommutator::RenderThread,
+                                  make_unique_dp<UpdateMapStyleMessage>(),
+                                  MessagePriority::High);
 }
 
 void DrapeEngine::RecacheMapShapes()

drape_frontend/message_subclasses.hpp

@@ -673,13 +673,9 @@ private:
   bool m_isVisible;
 };
 
-class UpdateMapStyleMessage : public BaseBlockingMessage
+class UpdateMapStyleMessage : public Message
 {
 public:
-  UpdateMapStyleMessage(Blocker & blocker)
-    : BaseBlockingMessage(blocker)
-  {}
-
   Type GetType() const override { return Message::UpdateMapStyle; }
 };