add screensaver and optimize performance

Signed-off-by: Peter Siegmund <developer@mars3142.org>

components/insa/include/common/InactivityTracker.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <cstdint>
+#include <functional>
+
+class InactivityTracker
+{
+  public:
+    InactivityTracker(uint64_t timeoutMs, std::function<void()> onTimeout);
+
+    void update(uint64_t dt);
+    void reset();
+    void setEnabled(bool enabled);
+
+  private:
+    uint64_t m_timeoutMs;
+    uint64_t m_elapsedTime;
+    bool m_enabled;
+    std::function<void()> m_onTimeout;
+};

components/insa/include/common/Menu.h

@@ -72,6 +72,8 @@ class Menu : public Widget
      */
     void addText(uint8_t id, const std::string &text);
 
+    void addTextCounter(uint8_t id, const std::string &text, const uint8_t value);
+
     /**
      * @brief Adds a selection menu item (dropdown/list selection) to the menu
      * @param id Unique identifier for this menu item (must be unique within the menu)

components/insa/include/ui/ScreenSaver.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include "MenuOptions.h"
+#include "common/Widget.h"
+#include <cstdlib>
+#include <vector>
+
+class ScreenSaver final : public Widget
+{
+  public:
+    explicit ScreenSaver(menu_options_t *options);
+
+    void update(uint64_t dt) override;
+    void render() override;
+    void onButtonClicked(ButtonType button) override;
+
+  private:
+    struct Star
+    {
+        float x;
+        float y;
+        float z;
+        float speed;
+    };
+
+    menu_options_t *m_options;
+    uint64_t m_animationCounter;
+    std::vector<Star> m_stars;
+
+    static constexpr int NUM_STARS = 10;
+    static constexpr float SPEED_MULTIPLIER = 0.02f;
+    static constexpr float Z_NEAR = 0.1f;
+    static constexpr float Z_FAR = 10.0f;
+
+    void initStars();
+    void resetStar(Star &star);
+};