Update placefile text data outside of render loop, polygon cleanup

scwx-qt/source/scwx/qt/gl/draw/placefile_polygons.cpp

@@ -233,11 +233,15 @@ void PlacefilePolygons::Deinitialize()
 
    gl.glDeleteVertexArrays(1, &p->vao_);
    gl.glDeleteBuffers(2, p->vbo_.data());
+
+   // Clear the current buffers
+   p->currentBuffer_.clear();
+   p->currentThresholdBuffer_.clear();
 }
 
 void PlacefilePolygons::StartPolygons()
 {
-   // Clear the new buffer
+   // Clear the new buffers
    p->newBuffer_.clear();
    p->newThresholdBuffer_.clear();
 }
@@ -259,6 +263,10 @@ void PlacefilePolygons::FinishPolygons()
    p->currentBuffer_.swap(p->newBuffer_);
    p->currentThresholdBuffer_.swap(p->newThresholdBuffer_);
 
+   // Clear the new buffers
+   p->newBuffer_.clear();
+   p->newThresholdBuffer_.clear();
+
    // Mark the draw item dirty
    p->dirty_ = true;
 }

scwx-qt/source/scwx/qt/gl/draw/placefile_text.cpp

@@ -45,7 +45,6 @@ public:
 
    std::string placefileName_;
 
-   bool dirty_ {false};
    bool thresholded_ {false};
 
    std::uint32_t textId_ {};
@@ -59,9 +58,9 @@ public:
 
    units::length::nautical_miles<double> mapDistance_ {};
 
+   std::mutex listMutex_ {};
    std::vector<std::shared_ptr<const gr::Placefile::TextDrawItem>> textList_ {};
-
-   void Update();
+   std::vector<std::shared_ptr<const gr::Placefile::TextDrawItem>> newList_ {};
 };
 
 PlacefileText::PlacefileText(std::shared_ptr<GlContext> context,
@@ -84,18 +83,15 @@ void PlacefileText::set_thresholded(bool thresholded)
    p->thresholded_ = thresholded;
 }
 
-void PlacefileText::Initialize()
-{
-   p->dirty_ = true;
-}
+void PlacefileText::Initialize() {}
 
 void PlacefileText::Render(
    const QMapLibreGL::CustomLayerRenderParameters& params)
 {
+   std::unique_lock lock {p->listMutex_};
+
    if (!p->textList_.empty())
    {
-      p->Update();
-
       // Reset text ID per frame
       p->textId_ = 0;
 
@@ -209,7 +205,14 @@ void PlacefileText::Impl::RenderText(
 
 void PlacefileText::Deinitialize()
 {
-   Reset();
+   // Clear the text list
+   p->textList_.clear();
+}
+
+void PlacefileText::StartText()
+{
+   // Clear the new list
+   p->newList_.clear();
 }
 
 void PlacefileText::AddText(
@@ -217,21 +220,19 @@ void PlacefileText::AddText(
 {
    if (di != nullptr)
    {
-      p->textList_.emplace_back(di);
-      p->dirty_ = true;
+      p->newList_.emplace_back(di);
    }
 }
 
-void PlacefileText::Reset()
+void PlacefileText::FinishText()
 {
-   // Clear the icon list, and mark the draw item dirty
-   p->textList_.clear();
-   p->dirty_ = true;
-}
+   std::unique_lock lock {p->listMutex_};
 
-void PlacefileText::Impl::Update()
-{
-   dirty_ = false;
+   // Swap text lists
+   p->textList_.swap(p->newList_);
+
+   // Clear the new list
+   p->newList_.clear();
 }
 
 } // namespace draw

scwx-qt/source/scwx/qt/gl/draw/placefile_text.hpp

@@ -33,6 +33,11 @@ public:
    void Render(const QMapLibreGL::CustomLayerRenderParameters& params) override;
    void Deinitialize() override;
 
+   /**
+    * Resets and prepares the draw item for adding a new set of text.
+    */
+   void StartText();
+
    /**
     * Adds placefile text to the internal draw list.
     *
@@ -41,9 +46,9 @@ public:
    void AddText(const std::shared_ptr<gr::Placefile::TextDrawItem>& di);
 
    /**
-    * Resets the list of text in preparation for rendering a new frame.
+    * Finalizes the draw item after adding new text.
     */
-   void Reset();
+   void FinishText();
 
 private:
    class Impl;

scwx-qt/source/scwx/qt/map/map_widget.cpp

@@ -815,6 +815,12 @@ void MapWidgetImpl::UpdatePlacefileLayers()
          placefileLayers_.push_back(placefileLayer);
          AddLayer(
             GetPlacefileLayerName(placefileName), placefileLayer, "colorTable");
+
+         // When the layer updates, trigger a map widget update
+         connect(placefileLayer.get(),
+                 &PlacefileLayer::DataReloaded,
+                 widget_,
+                 [this]() { widget_->update(); });
       }
    }
 }

scwx-qt/source/scwx/qt/map/placefile_layer.cpp

@@ -59,6 +59,8 @@ PlacefileLayer::PlacefileLayer(std::shared_ptr<MapContext> context,
    AddDrawItem(p->placefileIcons_);
    AddDrawItem(p->placefilePolygons_);
    AddDrawItem(p->placefileText_);
+
+   ReloadData();
 }
 
 PlacefileLayer::~PlacefileLayer() = default;
@@ -128,19 +130,10 @@ void PlacefileLayer::Render(
          p->placefileIcons_->SetIconFiles(placefile->icon_files(),
                                           placefile->name());
 
-         // Reset Placefile Text
-         p->placefileText_->Reset();
-
          for (auto& drawItem : placefile->GetDrawItems())
          {
             switch (drawItem->itemType_)
             {
-            case gr::Placefile::ItemType::Text:
-               p->placefileText_->AddText(
-                  std::static_pointer_cast<gr::Placefile::TextDrawItem>(
-                     drawItem));
-               break;
-
             case gr::Placefile::ItemType::Icon:
                p->placefileIcons_->AddIcon(
                   std::static_pointer_cast<gr::Placefile::IconDrawItem>(
@@ -168,7 +161,7 @@ void PlacefileLayer::Deinitialize()
 
 void PlacefileLayer::ReloadData()
 {
-   // TODO: No longer needed after moving Icon and Text Render items here
+   // TODO: No longer needed after moving Icon Render items here
    p->dirty_ = true;
 
    boost::asio::post(
@@ -188,15 +181,18 @@ void PlacefileLayer::ReloadData()
             return;
          }
 
-         // Reset Placefile Polygons
+         // Start draw items
          p->placefilePolygons_->StartPolygons();
+         p->placefileText_->StartText();
 
          for (auto& drawItem : placefile->GetDrawItems())
          {
             switch (drawItem->itemType_)
             {
             case gr::Placefile::ItemType::Text:
-               // TODO
+               p->placefileText_->AddText(
+                  std::static_pointer_cast<gr::Placefile::TextDrawItem>(
+                     drawItem));
                break;
 
             case gr::Placefile::ItemType::Icon:
@@ -214,8 +210,11 @@ void PlacefileLayer::ReloadData()
             }
          }
 
-         // Finish Placefile Polygons
+         // Finish draw items
          p->placefilePolygons_->FinishPolygons();
+         p->placefileText_->FinishText();
+
+         Q_EMIT DataReloaded();
       });
 }
 

scwx-qt/source/scwx/qt/map/placefile_layer.hpp

@@ -13,6 +13,8 @@ namespace map
 
 class PlacefileLayer : public DrawLayer
 {
+   Q_OBJECT
+
 public:
    explicit PlacefileLayer(std::shared_ptr<MapContext> context,
                            const std::string&          placefileName);
@@ -28,6 +30,9 @@ public:
 
    void ReloadData();
 
+signals:
+   void DataReloaded();
+
 private:
    class Impl;
    std::unique_ptr<Impl> p;