gui events

fix scroll input
handle gui side, move and closed events

Nerfed.Runtime/Engine.cs

@@ -153,8 +153,8 @@ private static void Tick()
 
                 ProcessSDLEvents();
 
-                Controller.Update((float)Timestep.TotalSeconds);
                 // Tick game here...
+                Controller.Update((float)Timestep.TotalSeconds);
 
                 AudioDevice.WakeThread();
                 accumulatedUpdateTime -= Timestep;

Nerfed.Runtime/Gui/Controller.cs

@@ -113,7 +113,7 @@ public Controller(GraphicsDevice graphicsDevice, Window mainWindow, Color clearC
         mainViewport.PlatformHandle = mainWindow.Handle;
         GCHandle handle = GCHandle.Alloc(mainWindow);
         mainViewport.PlatformUserData = (IntPtr)handle;
-        windows.Add(mainWindow, handle);
+        AddWindow(mainWindow, mainViewport, handle);
 
         unsafe
         {
@@ -504,7 +504,11 @@ out int bytesPerPixel
     #region Window
     private void CreateWindow(ImGuiViewportPtr vp)
     {
-        WindowCreateInfo info = new WindowCreateInfo("Window Title", (uint)vp.Pos.X, (uint)vp.Pos.Y, ScreenMode.Windowed);
+        // TODO: Handle all flags.
+        ScreenMode screenMode = vp.Flags.HasFlag(ImGuiViewportFlags.NoDecoration) ? ScreenMode.WindowedBorderless : ScreenMode.Windowed;
+        bool systemResizable = !vp.Flags.HasFlag(ImGuiViewportFlags.NoDecoration);
+
+        WindowCreateInfo info = new WindowCreateInfo("Window Title", (uint)vp.Pos.X, (uint)vp.Pos.Y, screenMode, systemResizable, false);
 
         Window window = new Window(graphicsDevice, info);
         graphicsDevice.ClaimWindow(window, SwapchainComposition.SDR, PresentMode.Immediate); // What PresentMode do we need?
@@ -512,7 +516,7 @@ private void CreateWindow(ImGuiViewportPtr vp)
         GCHandle handle = GCHandle.Alloc(window);
         vp.PlatformUserData = (IntPtr)handle;
 
-        windows.Add(window, handle);
+        AddWindow(window, vp, handle);
     }
 
     private void DestroyWindow(ImGuiViewportPtr vp)
@@ -528,8 +532,38 @@ private void DestroyWindow(ImGuiViewportPtr vp)
             windows.Remove(window);
         }
 
-        graphicsDevice.Wait();
+        //graphicsDevice.Wait();
         window.Dispose();
+
+        vp.PlatformUserData = IntPtr.Zero;
+    }
+
+    private void AddWindow(Window window, ImGuiViewportPtr vp, GCHandle handle)
+    {
+        window.OnResizedEvent += ((win, w, h) => {
+            vp.PlatformRequestResize = true;
+        });
+
+        window.OnMovedEvent += ((win, x, y) =>
+        {
+            vp.PlatformRequestMove = true;
+        });
+
+        window.OnCloseEvent += (win) =>
+        {
+            ImGuiPlatformIOPtr platformIO = ImGui.GetPlatformIO();
+
+            for (int i = 0; i < platformIO.Viewports.Capacity; i++)
+            {
+                ImGuiViewportPtr vp = platformIO.Viewports[i];
+                if(win == (Window)GCHandle.FromIntPtr(vp.PlatformUserData).Target)
+                {
+                    DestroyWindow(vp);
+                }
+            }
+        };
+
+        windows.Add(window, handle);
     }
 
     private void ShowWindow(ImGuiViewportPtr vp)

Nerfed.Runtime/Input/Devices/Mouse.cs

@@ -1,5 +1,5 @@
-using System.Numerics;
+using SDL2;
-using SDL2;
+using System.Numerics;
 
 namespace Nerfed.Runtime;
 
@@ -65,6 +65,8 @@ public static int GetWheelHorizontal()
 
     internal static void Update()
     {
+        wheelX = 0;
+        wheelY = 0;
         Array.Copy(buttonStates, lastButtonStates, buttonStates.Length);
     }
 
@@ -105,8 +107,8 @@ private static void ProcessButtonUpEvent(ref SDL.SDL_MouseButtonEvent ev)
 
     private static void ProcessWheelEvent(ref SDL.SDL_MouseWheelEvent ev)
     {
-        wheelX += ev.x;
+        wheelX = ev.x;
-        wheelY += ev.y;
+        wheelY = ev.y;
     }
 
     private static void ProcessMotionEvent(ref SDL.SDL_MouseMotionEvent ev)

Nerfed.Runtime/Window/ScreenMode.cs

@@ -3,6 +3,7 @@ namespace Nerfed.Runtime;
 public enum ScreenMode
 {
     Fullscreen,
-    BorderlessFullscreen,
+    FullscreenBorderless,
-    Windowed
+    Windowed,
-}
+    WindowedBorderless
+}

Nerfed.Runtime/Window/Window.cs

@@ -11,6 +11,10 @@ namespace Nerfed.Runtime;
 /// </summary>
 public class Window
 {
+	public event Action<Window, uint, uint> OnResizedEvent;
+	public event Action<Window, int, int> OnMovedEvent;
+	public event Action<Window> OnCloseEvent;
+
     internal IntPtr Handle { get; }
 	public ScreenMode ScreenMode { get; private set; }
 	public uint Width { get; private set; }
@@ -33,9 +37,7 @@ public class Window
 	public string Title { get; private set;}
 
 	private bool IsDisposed;
-	private System.Action<uint, uint> SizeChangeCallback = null;
+    private static readonly Dictionary<uint, Window> windowsById = new Dictionary<uint, Window>();
-
-	private static readonly Dictionary<uint, Window> windowsById = new Dictionary<uint, Window>();
 
 	public Window(GraphicsDevice graphicsDevice, WindowCreateInfo windowCreateInfo)
 	{
@@ -54,10 +56,14 @@ public Window(GraphicsDevice graphicsDevice, WindowCreateInfo windowCreateInfo)
 		{
 			flags |= SDL.SDL_WindowFlags.SDL_WINDOW_FULLSCREEN;
 		}
-		else if (windowCreateInfo.ScreenMode == ScreenMode.BorderlessFullscreen)
+		else if (windowCreateInfo.ScreenMode == ScreenMode.FullscreenBorderless)
 		{
 			flags |= SDL.SDL_WindowFlags.SDL_WINDOW_FULLSCREEN_DESKTOP;
 		}
+		else if(windowCreateInfo.ScreenMode == ScreenMode.WindowedBorderless)
+		{
+			flags |= SDL.SDL_WindowFlags.SDL_WINDOW_BORDERLESS;
+		}
 
 		if (windowCreateInfo.SystemResizable)
 		{
@@ -104,29 +110,35 @@ internal static void ProcessEvent(ref SDL.SDL_Event ev)
 			case SDL.SDL_WindowEventID.SDL_WINDOWEVENT_SIZE_CHANGED:
 				window.ProcessSizeChangedEvent(ref ev.window);
 				break;
+			case SDL.SDL_WindowEventID.SDL_WINDOWEVENT_MOVED:
+				window.ProcessMovedChangedEvent(ref ev.window);
+				break;
 			case SDL.SDL_WindowEventID.SDL_WINDOWEVENT_CLOSE:
 				window.ProcessCloseEvent(ref ev.window);
 				break;
 		}
 	}
 
-	private void ProcessSizeChangedEvent(ref SDL.SDL_WindowEvent ev)
+    private void ProcessSizeChangedEvent(ref SDL.SDL_WindowEvent ev)
 	{
 		uint newWidth = (uint)ev.data1;
 		uint newHeight = (uint)ev.data2;
 		Width = newWidth;
 		Height = newHeight;
 
-		if (SizeChangeCallback != null)
+		OnResizedEvent?.Invoke(this, Width, Height);
-		{
-			SizeChangeCallback(newWidth, newHeight);
-		}
 	}
 
-	private void ProcessCloseEvent(ref SDL.SDL_WindowEvent ev)
+    private void ProcessMovedChangedEvent(ref SDL.SDL_WindowEvent ev)
+    {
+		OnMovedEvent?.Invoke(this, ev.data1, ev.data2);
+    }
+
+    private void ProcessCloseEvent(ref SDL.SDL_WindowEvent ev)
 	{
 		Engine.GraphicsDevice.UnclaimWindow(this);
 		Dispose();
+		OnCloseEvent?.Invoke(this);
 	}
 
 	/// <summary>
@@ -140,7 +152,7 @@ public void SetScreenMode(ScreenMode screenMode)
 		{
 			windowFlag = SDL.SDL_WindowFlags.SDL_WINDOW_FULLSCREEN;
 		}
-		else if (screenMode == ScreenMode.BorderlessFullscreen)
+		else if (screenMode == ScreenMode.FullscreenBorderless)
 		{
 			windowFlag = SDL.SDL_WindowFlags.SDL_WINDOW_FULLSCREEN_DESKTOP;
 		}
@@ -195,15 +207,7 @@ internal void Show()
 		SDL.SDL_ShowWindow(Handle);
 	}
 
-	/// <summary>
+    protected virtual void Dispose(bool disposing)
-	/// You can specify a method to run when the window size changes.
-	/// </summary>
-	public void RegisterSizeChangeCallback(System.Action<uint, uint> sizeChangeCallback)
-	{
-		SizeChangeCallback = sizeChangeCallback;
-	}
-
-	protected virtual void Dispose(bool disposing)
 	{
 		if (!IsDisposed)
 		{