From 508b36bd7114b057f6ecb8024a780bd189a5b76c Mon Sep 17 00:00:00 2001
From: anulax1225 <anulax1225@icloud.com>
Date: Sun, 21 Jan 2024 22:47:34 +0100
Subject: [PATCH] Prepering event handling from application side

---
 bakara/src/bakara/core/application.cpp  |  6 ++++++
 bakara/src/bakara/core/application.h    |  6 +++++-
 bakara/src/bakara/events/event.h        | 15 +++++++++------
 bakara/src/bakara/events/window_event.h |  8 +++++---
 4 files changed, 25 insertions(+), 10 deletions(-)

diff --git a/bakara/src/bakara/core/application.cpp b/bakara/src/bakara/core/application.cpp
index d31b6a0..f056186 100644
--- a/bakara/src/bakara/core/application.cpp
+++ b/bakara/src/bakara/core/application.cpp
@@ -4,10 +4,16 @@ namespace Bk {
     Application::Application() 
     { 
         p_window = Window::create_window();
+        p_window->set_event_callback(BK_BIND_EVENT_FN(Application::on_event));
     }
 
     Application::~Application() { }
 
+    void Application::on_event(Event& e)
+    {
+        BK_CORE_INFO("Event : {0}", EVENT_STRING(e));
+    }
+
     void Application::run() 
     {
         while (p_running)
diff --git a/bakara/src/bakara/core/application.h b/bakara/src/bakara/core/application.h
index 509c76e..aff369a 100644
--- a/bakara/src/bakara/core/application.h
+++ b/bakara/src/bakara/core/application.h
@@ -2,14 +2,18 @@
 
 #include <bkpch.h>
 #include "window.h"
+#include <bakara/events/event.h>
 
 namespace Bk {
+
+    #define BK_BIND_EVENT_FN(fn) std::bind(&fn, this, std::placeholders::_1)
+
     class Application 
     {
         public:
             Application();
             virtual ~Application();
-        
+            void on_event(Event& e);
             void run();
         private:
             std::unique_ptr<Window> p_window;
diff --git a/bakara/src/bakara/events/event.h b/bakara/src/bakara/events/event.h
index 40f18b9..dc51a9b 100644
--- a/bakara/src/bakara/events/event.h
+++ b/bakara/src/bakara/events/event.h
@@ -40,8 +40,16 @@ namespace Bk {
 								virtual const char* get_name() const override { return BK_STRINGIFY(type); }
 
     #define EVENT_CLASS_CATEGORY(category) virtual int get_category_flags() const override { return category; }
+    
+    #ifdef BK_DEBUG
+        #define EVENT_STRINGIFY(str, ...) std::string to_string() const override { return format(str, __VA_ARGS__); }
 
-    #define EVENT_STRINGIFY(str, ...) std::string to_string() const override { return format(str, __VA_ARGS__); }
+        #define EVENT_STRING(event) event.to_string()
+    #else 
+        #define EVENT_STRINGIFY(str, ...) 
+
+        #define EVENT_STRING(event)
+    #endif
 
     class Event 
     {
@@ -62,11 +70,6 @@ namespace Bk {
             }
     };
 
-    inline std::ostream& operator<<(std::ostream& os, Event& e)  
-    {
-        return os << e.to_string();
-    }
-
 	class EventDispatcher
 	{
         public:
diff --git a/bakara/src/bakara/events/window_event.h b/bakara/src/bakara/events/window_event.h
index acbcdb1..d44b8ac 100644
--- a/bakara/src/bakara/events/window_event.h
+++ b/bakara/src/bakara/events/window_event.h
@@ -25,9 +25,11 @@ namespace Bk {
 
     class WindowCloseEvent : public Event 
     {
-        WindowCloseEvent() = default;
+        public:
+            WindowCloseEvent() = default;
 
-        EVENT_CLASS_TYPE(WindowClose)
-        EVENT_CLASS_CATEGORY(AppCategory)
+            EVENT_CLASS_TYPE(WindowClose)
+            EVENT_CLASS_CATEGORY(AppCategory)
+            EVENT_STRINGIFY("Window closing%s", ".")
     };
 }
\ No newline at end of file