Add geo icons draw item

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

@@ -0,0 +1,163 @@
+#pragma once
+
+#include <scwx/qt/gl/gl_context.hpp>
+#include <scwx/qt/gl/draw/draw_item.hpp>
+
+#include <boost/gil.hpp>
+#include <units/angle.h>
+
+namespace scwx
+{
+namespace qt
+{
+namespace gl
+{
+namespace draw
+{
+
+struct GeoIconDrawItem;
+
+class GeoIcons : public DrawItem
+{
+public:
+   explicit GeoIcons(const std::shared_ptr<GlContext>& context);
+   ~GeoIcons();
+
+   GeoIcons(const GeoIcons&)            = delete;
+   GeoIcons& operator=(const GeoIcons&) = delete;
+
+   GeoIcons(GeoIcons&&) noexcept;
+   GeoIcons& operator=(GeoIcons&&) noexcept;
+
+   void set_selected_time(std::chrono::system_clock::time_point selectedTime);
+   void set_thresholded(bool thresholded);
+
+   void Initialize() override;
+   void Render(const QMapLibreGL::CustomLayerRenderParameters& params,
+               bool textureAtlasChanged) override;
+   void Deinitialize() override;
+
+   bool RunMousePicking(const QMapLibreGL::CustomLayerRenderParameters& params,
+                        const QPointF&   mouseLocalPos,
+                        const QPointF&   mouseGlobalPos,
+                        const glm::vec2& mouseCoords) override;
+
+   /**
+    * Resets and prepares the draw item for adding a new set of icon sheets.
+    */
+   void StartIconSheets();
+
+   /**
+    * Adds an icon sheet for drawing the geo icons. The icon sheet must already
+    * exist in the texture atlas.
+    *
+    * @param [in] name The name of the icon sheet in the texture atlas
+    * @param [in] iconWidth The width of each icon in the icon sheet. Default is
+    * 0 for a single icon.
+    * @param [in] iconHeight The height of each icon in the icon sheet. Default
+    * is 0 for a single icon.
+    * @param [in] hotX The zero-based center of the each icon in the icon sheet.
+    * Default is -1 to center the icon.
+    * @param [in] hotY The zero-based center of the each icon in the icon sheet.
+    * Default is -1 to center the icon.
+    */
+   void AddIconSheet(const std::string& name,
+                     std::size_t        iconWidth  = 0,
+                     std::size_t        iconHeight = 0,
+                     std::int32_t       hotX       = -1,
+                     std::int32_t       hotY       = -1);
+
+   /**
+    * Resets and prepares the draw item for adding a new set of icon sheets.
+    */
+   void FinishIconSheets();
+
+   /**
+    * Resets and prepares the draw item for adding a new set of icons.
+    */
+   void StartIcons();
+
+   /**
+    * Adds a geo icon to the internal draw list.
+    *
+    * @return Geo icon draw item
+    */
+   std::shared_ptr<GeoIconDrawItem> AddIcon();
+
+   /**
+    * Sets the texture of a geo icon.
+    *
+    * @param [in] di Geo icon draw item
+    * @param [in] iconSheet The name of the icon sheet in the texture atlas
+    * @param [in] iconIndex The zero-based index of the icon in the icon sheet
+    */
+   void SetIconTexture(const std::shared_ptr<GeoIconDrawItem>& di,
+                       const std::string&                      iconSheet,
+                       std::size_t                             iconIndex);
+
+   /**
+    * Sets the location of a geo icon.
+    *
+    * @param [in] di Geo icon draw item
+    * @param [in] latitude The latitude of the geo icon.
+    * @param [in] longitude The longitude of the geo icon.
+    * @param [in] xOffset The x-offset of the geo icon. Default is 0.
+    * @param [in] yOffset The y-offset of the geo icon. Default is 0.
+    */
+   void SetIconLocation(const std::shared_ptr<GeoIconDrawItem>& di,
+                        units::angle::degrees<double>           latitude,
+                        units::angle::degrees<double>           longitude,
+                        double                                  xOffset = 0.0,
+                        double                                  yOffset = 0.0);
+
+   /**
+    * Sets the angle of a geo icon.
+    *
+    * @param [in] di Geo icon draw item
+    * @param [in] angle Angle in degrees
+    */
+   void SetIconAngle(const std::shared_ptr<GeoIconDrawItem>& di,
+                     units::angle::degrees<double>           angle);
+
+   /**
+    * Sets the modulate color of a geo icon.
+    *
+    * @param [in] di Geo icon draw item
+    * @param [in] modulate Modulate color
+    */
+   void SetIconModulate(const std::shared_ptr<GeoIconDrawItem>& di,
+                        boost::gil::rgba8_pixel_t               modulate);
+
+   /**
+    * Sets the hover text of a geo icon.
+    *
+    * @param [in] di Geo icon draw item
+    * @param [in] text Hover text
+    */
+   void SetIconHoverText(const std::shared_ptr<GeoIconDrawItem>& di,
+                         const std::string&                      text);
+
+   /**
+    * Sets the visibility of a geo icon.
+    *
+    * @param [in] di Geo icon draw item
+    * @param [in] visible Icon visibility
+    */
+   void SetIconVisible(const std::shared_ptr<GeoIconDrawItem>& di,
+                       bool                                    visible);
+
+   /**
+    * Finalizes the draw item after adding new icons.
+    */
+   void FinishIcons();
+
+private:
+   class Impl;
+
+   std::unique_ptr<Impl> p;
+};
+
+} // namespace draw
+} // namespace gl
+} // namespace qt
+} // namespace scwx