Support exiting GPU Test

examples/PoolBox/application/src/menu.cpp

@@ -2,6 +2,8 @@
 #include <PSX/Periphery/periphery.hpp>
 
 namespace Menu {
+    using DigitalButton = Periphery::GenericController::Button;
+
     void SimpleMenu :: setup(Callback callback, const Entry* entries, size_t size) {
         this->selection_callback = callback;
         this->entries            = entries;
@@ -10,7 +12,6 @@ namespace Menu {
     }
 
     void SimpleMenu :: update(JabyEngine::FontWriter& font_writer, State& cursor, const GPU::PositionI16& start) {
-        using DigitalButton = Periphery::GenericController::Button;
         const auto& controller = Periphery::get_primary_controller_as<JabyEngine::Periphery::GenericController>();
 
         if(controller.button.went_down(DigitalButton::Up) && this->cur_selection > 0) {
@@ -38,4 +39,40 @@ namespace Menu {
             }
         }
     }
+
+    void BackMenu :: setup(JabyEngine::FontWriter* font_writer) {
+        this->font_writer = font_writer;
+        this->timeout.reset();
+        this->waiting = false;
+    }
+
+    bool BackMenu :: update(const GPU::PositionI16& position) {
+        const auto& controller = Periphery::get_primary_controller_as<JabyEngine::Periphery::GenericController>();
+
+        if(controller.button.is_down(DigitalButton::Circle)) {
+            this->waiting = true;
+            if(this->timeout.is_expired_for(2500_ms)) {
+                return true;
+            }
+        }
+        
+        else {
+            this->waiting = false;
+            this->timeout.reset();
+        }
+
+        if(this->waiting) {
+            auto state = JabyEngine::State::create(position);
+            this->font_writer->write(state, "Press and hold ()\nto get back", GPU::Color24::Red());
+        }
+
+        else {
+            this->font_writer->clear();
+        }
+        return false;
+    }
+
+    void BackMenu :: render() {
+        this->font_writer->render();
+    }
 }