Route platform frame hooks through services

src/app.cpp

@@ -1123,10 +1123,7 @@ void App::ui_thread_main()
         float dt = std::chrono::duration<float>(t_now - t_start).count();
         t_start = t_now;
 
-#ifdef _WIN32
-        extern void win32_update_stylus(float dt);
-        win32_update_stylus(dt);
-#endif
+        update_platform_frame(dt);
 
         // increment timers
         t_frame += dt;
@@ -1134,13 +1131,7 @@ void App::ui_thread_main()
 
         if (t_fps_counter > 1.f)
         {
-#ifdef _WIN32
-            extern void win32_update_fps(int frames);
-            win32_update_fps(rendered_frames);
-#elif __LINUX__
-            extern void linux_update_fps(int frames);
-            linux_update_fps(rendered_frames);
-#endif
+            report_rendered_frames(rendered_frames);
             t_fps_counter = 0;
             rendered_frames = 0;
         }

src/app.h

@@ -190,6 +190,8 @@ public:
     void display_file(std::string path);
     void share_file(std::string path);
     void request_app_close();
+    void update_platform_frame(float delta_time_seconds);
+    void report_rendered_frames(int frames);
     void save_prepared_file(
         std::string path,
         std::string suggested_name,

src/app_events.cpp

@@ -219,6 +219,16 @@ void App::request_app_close()
     active_platform_services().request_app_close();
 }
 
+void App::update_platform_frame(float delta_time_seconds)
+{
+    active_platform_services().update_platform_frame(delta_time_seconds);
+}
+
+void App::report_rendered_frames(int frames)
+{
+    active_platform_services().report_rendered_frames(frames);
+}
+
 void App::save_prepared_file(
     std::string path,
     std::string suggested_name,

src/platform_api/platform_services.h

@@ -18,6 +18,8 @@ public:
     [[nodiscard]] virtual bool set_clipboard_text(std::string_view text) = 0;
     virtual void set_cursor_visible(bool visible) = 0;
     virtual void set_virtual_keyboard_visible(bool visible) = 0;
+    virtual void update_platform_frame(float delta_time_seconds) = 0;
+    virtual void report_rendered_frames(int frames) = 0;
     virtual void display_file(std::string_view path) = 0;
     virtual void share_file(std::string_view path) = 0;
     virtual void request_app_close() = 0;

src/platform_legacy/legacy_platform_services.cpp

@@ -13,6 +13,7 @@ bool android_set_clipboard(const std::string& s);
 #elif __APPLE__
 #elif __LINUX__
 #include <tinyfiledialogs.h>
+void linux_update_fps(int frames);
 #elif __WEB__
 void webgl_pick_file(std::function<void(std::string)> callback);
 void webgl_pick_file_save(
@@ -87,6 +88,20 @@ public:
 #endif
     }
 
+    void update_platform_frame(float delta_time_seconds) override
+    {
+        (void)delta_time_seconds;
+    }
+
+    void report_rendered_frames(int frames) override
+    {
+#ifdef __LINUX__
+        linux_update_fps(frames);
+#else
+        (void)frames;
+#endif
+    }
+
     void pick_image(pp::platform::PickedPathCallback callback) override
     {
 #ifdef __IOS__

src/platform_windows/windows_platform_services.cpp

@@ -8,6 +8,8 @@ extern std::deque<std::packaged_task<void()>> main_tasklist;
 extern std::mutex main_task_mutex;
 
 void destroy_window();
+void win32_update_fps(int frames);
+void win32_update_stylus(float dt);
 
 namespace {
 
@@ -168,6 +170,16 @@ public:
         (void)visible;
     }
 
+    void update_platform_frame(float delta_time_seconds) override
+    {
+        win32_update_stylus(delta_time_seconds);
+    }
+
+    void report_rendered_frames(int frames) override
+    {
+        win32_update_fps(frames);
+    }
+
     void display_file(std::string_view path) override
     {
         (void)path;