From 320857328c0573fb9d2e89b8985e64d08328ca05 Mon Sep 17 00:00:00 2001
From: Dan Paulat <dpaulat@gmail.com>
Date: Thu, 23 Nov 2023 08:20:02 -0600
Subject: [PATCH] Update the map widget when requested by a layer

---
 scwx-qt/source/scwx/qt/map/generic_layer.hpp | 3 +++
 scwx-qt/source/scwx/qt/map/map_widget.cpp    | 5 +++++
 2 files changed, 8 insertions(+)

diff --git a/scwx-qt/source/scwx/qt/map/generic_layer.hpp b/scwx-qt/source/scwx/qt/map/generic_layer.hpp
index 239d271b..355680b8 100644
--- a/scwx-qt/source/scwx/qt/map/generic_layer.hpp
+++ b/scwx-qt/source/scwx/qt/map/generic_layer.hpp
@@ -45,6 +45,9 @@ public:
                    const QPointF&   mouseGlobalPos,
                    const glm::vec2& mouseCoords);
 
+signals:
+   void NeedsRendering();
+
 protected:
    std::shared_ptr<MapContext> context() const;
 
diff --git a/scwx-qt/source/scwx/qt/map/map_widget.cpp b/scwx-qt/source/scwx/qt/map/map_widget.cpp
index 7c543bdd..a897748b 100644
--- a/scwx-qt/source/scwx/qt/map/map_widget.cpp
+++ b/scwx-qt/source/scwx/qt/map/map_widget.cpp
@@ -969,6 +969,11 @@ void MapWidgetImpl::AddLayer(const std::string&            id,
 
       layerList_.push_back(id);
       genericLayers_.push_back(layer);
+
+      connect(layer.get(),
+              &GenericLayer::NeedsRendering,
+              widget_,
+              [this]() { widget_->update(); });
    }
    catch (const std::exception&)
    {