ja tenim el control de la finestra i de la imatge

treballant en les tecles de funcio

source/core/global_inputs.cpp

@@ -0,0 +1,37 @@
+#include "core/global_inputs.hpp"
+
+#include <SDL3/SDL.h>
+
+#include "core/jinput.hpp"
+#include "core/screen.hpp"
+
+namespace GlobalInputs {
+
+    static bool f1_was_pressed = false;
+    static bool f2_was_pressed = false;
+    static bool f3_was_pressed = false;
+
+    void handle() {
+        // F1 — decrement zoom
+        bool f1 = JI_KeyPressed(SDL_SCANCODE_F1);
+        if (f1 && !f1_was_pressed) {
+            Screen::get()->decZoom();
+        }
+        f1_was_pressed = f1;
+
+        // F2 — increment zoom
+        bool f2 = JI_KeyPressed(SDL_SCANCODE_F2);
+        if (f2 && !f2_was_pressed) {
+            Screen::get()->incZoom();
+        }
+        f2_was_pressed = f2;
+
+        // F3 — toggle fullscreen
+        bool f3 = JI_KeyPressed(SDL_SCANCODE_F3);
+        if (f3 && !f3_was_pressed) {
+            Screen::get()->toggleFullscreen();
+        }
+        f3_was_pressed = f3;
+    }
+
+}  // namespace GlobalInputs