From 33b6b09e5dd00f6598c7305b392c2432a91b38b0 Mon Sep 17 00:00:00 2001
From: Hyper <34012267+hyperbx@users.noreply.github.com>
Date: Sat, 9 Nov 2024 20:28:03 +0000
Subject: [PATCH] Implemented SDL event listener class

---
 UnleashedRecomp/CMakeLists.txt                |  1 +
 .../patches/ui/frontend_listener.cpp          |  3 +++
 .../patches/ui/frontend_listener.h            | 24 ++++++++++++++++++
 UnleashedRecomp/ui/window.cpp                 | 10 ++++++++
 UnleashedRecomp/ui/window.h                   |  6 ++++-
 UnleashedRecomp/ui/window_listener.h          | 25 +++++++++++++++++++
 6 files changed, 68 insertions(+), 1 deletion(-)
 create mode 100644 UnleashedRecomp/patches/ui/frontend_listener.cpp
 create mode 100644 UnleashedRecomp/patches/ui/frontend_listener.h
 create mode 100644 UnleashedRecomp/ui/window_listener.h

diff --git a/UnleashedRecomp/CMakeLists.txt b/UnleashedRecomp/CMakeLists.txt
index 552f9fb5..fb45d090 100644
--- a/UnleashedRecomp/CMakeLists.txt
+++ b/UnleashedRecomp/CMakeLists.txt
@@ -59,6 +59,7 @@ set(SWA_HID_CXX_SOURCES
 )
 
 set(SWA_PATCHES_CXX_SOURCES
+    "patches/ui/frontend_listener.cpp"
     "patches/fps_patches.cpp"
     "patches/misc_patches.cpp"
     "patches/object_patches.cpp"
diff --git a/UnleashedRecomp/patches/ui/frontend_listener.cpp b/UnleashedRecomp/patches/ui/frontend_listener.cpp
new file mode 100644
index 00000000..0dd92edc
--- /dev/null
+++ b/UnleashedRecomp/patches/ui/frontend_listener.cpp
@@ -0,0 +1,3 @@
+#include "frontend_listener.h"
+
+FrontendListener m_frontendListener;
diff --git a/UnleashedRecomp/patches/ui/frontend_listener.h b/UnleashedRecomp/patches/ui/frontend_listener.h
new file mode 100644
index 00000000..3ddd9343
--- /dev/null
+++ b/UnleashedRecomp/patches/ui/frontend_listener.h
@@ -0,0 +1,24 @@
+#pragma once
+
+#include "ui/window_listener.h"
+
+class FrontendListener : public WindowListener
+{
+private:
+    bool m_isF8KeyDown = false;
+
+public:
+    void OnKeyDown(SDL_Keycode key) override
+    {
+        if (key == SDLK_F8 && !m_isF8KeyDown)
+        {
+            printf("F8 pressed!\n");
+            m_isF8KeyDown = true;
+        }
+    }
+
+    void OnKeyUp(SDL_Keycode key) override
+    {
+        m_isF8KeyDown = key != SDLK_F8;
+    }
+};
diff --git a/UnleashedRecomp/ui/window.cpp b/UnleashedRecomp/ui/window.cpp
index fb5b746b..5b673f4e 100644
--- a/UnleashedRecomp/ui/window.cpp
+++ b/UnleashedRecomp/ui/window.cpp
@@ -1,4 +1,5 @@
 #include "window.h"
+#include "window_listener.h"
 #include <config.h>
 #include <kernel/function.h>
 #include <SDL_syswm.h>
@@ -56,6 +57,9 @@ int Window_OnSDLEvent(void*, SDL_Event* event)
                 }
             }
 
+            for (auto listener : Window::s_listeners)
+                listener->OnKeyDown(event->key.keysym.sym);
+
             break;
         }
 
@@ -68,6 +72,9 @@ int Window_OnSDLEvent(void*, SDL_Event* event)
                     m_isFullscreenKeyReleased = true;
                     break;
             }
+
+            for (auto listener : Window::s_listeners)
+                listener->OnKeyUp(event->key.keysym.sym);
         }
 
         case SDL_WINDOWEVENT:
@@ -107,6 +114,9 @@ int Window_OnSDLEvent(void*, SDL_Event* event)
         }
     }
 
+    for (auto listener : Window::s_listeners)
+        listener->OnSDLEvent(event);
+
     return 0;
 }
 
diff --git a/UnleashedRecomp/ui/window.h b/UnleashedRecomp/ui/window.h
index 85a83994..07025168 100644
--- a/UnleashedRecomp/ui/window.h
+++ b/UnleashedRecomp/ui/window.h
@@ -7,7 +7,9 @@
 #define DEFAULT_WIDTH 1280
 #define DEFAULT_HEIGHT 720
 
-struct Window
+class WindowListener;
+
+class Window
 {
 public:
     inline static SDL_Window* s_pWindow;
@@ -20,6 +22,8 @@ public:
 
     inline static bool s_isFocused;
 
+    inline static std::vector<std::shared_ptr<WindowListener>> s_listeners;
+
     static SDL_Surface* GetIconSurface(void* pIconBmp = nullptr, size_t iconSize = 0)
     {
         auto rw = SDL_RWFromMem(pIconBmp ? pIconBmp : (void*)g_icon, pIconBmp ? iconSize : g_icon_size);
diff --git a/UnleashedRecomp/ui/window_listener.h b/UnleashedRecomp/ui/window_listener.h
new file mode 100644
index 00000000..c7aecc02
--- /dev/null
+++ b/UnleashedRecomp/ui/window_listener.h
@@ -0,0 +1,25 @@
+#pragma once
+
+#include "ui/window.h"
+
+class IWindowListener
+{
+public:
+    virtual ~IWindowListener() = default;
+    virtual void OnSDLEvent(SDL_Event* event) = 0;
+    virtual void OnKeyDown(SDL_Keycode key) = 0;
+    virtual void OnKeyUp(SDL_Keycode key) = 0;
+};
+
+class WindowListener : public IWindowListener
+{
+public:
+    WindowListener()
+    {
+        Window::s_listeners.emplace_back(this);
+    }
+
+    void OnSDLEvent(SDL_Event* event) override {}
+    void OnKeyDown(SDL_Keycode key) override {}
+    void OnKeyUp(SDL_Keycode key) override {}
+};