Refactor placefile text into its own draw item

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

@@ -0,0 +1,57 @@
+#pragma once
+
+#include <scwx/qt/gl/gl_context.hpp>
+#include <scwx/qt/gl/draw/draw_item.hpp>
+#include <scwx/gr/placefile.hpp>
+
+namespace scwx
+{
+namespace qt
+{
+namespace gl
+{
+namespace draw
+{
+
+class PlacefileText : public DrawItem
+{
+public:
+   explicit PlacefileText(std::shared_ptr<GlContext> context,
+                          const std::string&         placefileName);
+   ~PlacefileText();
+
+   PlacefileText(const PlacefileText&)            = delete;
+   PlacefileText& operator=(const PlacefileText&) = delete;
+
+   PlacefileText(PlacefileText&&) noexcept;
+   PlacefileText& operator=(PlacefileText&&) noexcept;
+
+   void set_placefile_name(const std::string& placefileName);
+   void set_thresholded(bool thresholded);
+
+   void Initialize() override;
+   void Render(const QMapLibreGL::CustomLayerRenderParameters& params) override;
+   void Deinitialize() override;
+
+   /**
+    * Adds placefile text to the internal draw list.
+    *
+    * @param [in] di Placefile icon
+    */
+   void AddText(const std::shared_ptr<gr::Placefile::TextDrawItem>& di);
+
+   /**
+    * Resets the list of text in preparation for rendering a new frame.
+    */
+   void Reset();
+
+private:
+   class Impl;
+
+   std::unique_ptr<Impl> p;
+};
+
+} // namespace draw
+} // namespace gl
+} // namespace qt
+} // namespace scwx