ImGuiNet

2026-05-18 01:36:55 -05:00
parent fc0b04a4bc
commit 060f117a01
7 changed files with 233 additions and 624 deletions
@@ -1,7 +1,7 @@
 using System.Numerics;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
-using Hexa.NET.ImGui;
+using ImGuiNET;
 using SDL3;

 namespace SDL3_TestingSuite.SDL3;
@@ -32,7 +32,7 @@ public unsafe static class ImGuiSDL3Platform
        // Mouse Handling
        public uint MouseWindowID;
        public int MouseButtonsDown;
-        public readonly nint[] MouseCursors = new nint[(int)ImGuiMouseCursor.Count];
+        public readonly nint[] MouseCursors = new nint[(int)ImGuiMouseCursor.COUNT];
        public nint MouseLastCursor;
        public int MouseLastLeaveFrame;
        public bool MouseCanUseGlobalState;
@@ -85,7 +85,7 @@ public unsafe static class ImGuiSDL3Platform
    private static readonly PlatformOpenInShellFn OpenInShellDelegate = OpenInShell;
    // ReSharper restore NotAccessedField.Local

-    public static PlatformData Data => ImGui.GetCurrentContext().Handle != null ? ImGuiUserData<PlatformData>.Get(ImGui.GetIO().BackendPlatformUserData)! : null!;
+    public static PlatformData Data => ImGui.GetCurrentContext() != nint.Zero ? ImGuiUserData<PlatformData>.Get(ImGui.GetIO().BackendPlatformUserData)! : null!;

    public static bool Init(nint window, nint renderer)
    {
@@ -124,10 +124,10 @@ public unsafe static class ImGuiSDL3Platform
 #endif

        ImGuiPlatformIOPtr platformIo = ImGui.GetPlatformIO();
-        platformIo.PlatformGetClipboardTextFn = (void*)Marshal.GetFunctionPointerForDelegate(GetClipboardDelegate);
-        platformIo.PlatformSetClipboardTextFn = (void*)Marshal.GetFunctionPointerForDelegate(SetClipboardDelegate);
-        platformIo.PlatformSetImeDataFn = (void*)Marshal.GetFunctionPointerForDelegate(SetImeDataDelegate);
-        platformIo.PlatformOpenInShellFn = (void*)Marshal.GetFunctionPointerForDelegate(OpenInShellDelegate);
+        platformIo.Platform_GetClipboardTextFn = Marshal.GetFunctionPointerForDelegate(GetClipboardDelegate);
+        platformIo.Platform_SetClipboardTextFn = Marshal.GetFunctionPointerForDelegate(SetClipboardDelegate);
+        platformIo.Platform_SetImeDataFn = Marshal.GetFunctionPointerForDelegate(SetImeDataDelegate);
+        platformIo.Platform_OpenInShellFn = Marshal.GetFunctionPointerForDelegate(OpenInShellDelegate);

        UpdateMonitors();

@@ -137,13 +137,13 @@ public unsafe static class ImGuiSDL3Platform
        data.MouseCursors[(int)ImGuiMouseCursor.Arrow] = SDL.CreateSystemCursor(SDL.SystemCursor.Default);
        data.MouseCursors[(int)ImGuiMouseCursor.TextInput] = SDL.CreateSystemCursor(SDL.SystemCursor.Text);
        data.MouseCursors[(int)ImGuiMouseCursor.ResizeAll] = SDL.CreateSystemCursor(SDL.SystemCursor.Move);
-        data.MouseCursors[(int)ImGuiMouseCursor.ResizeNs] = SDL.CreateSystemCursor(SDL.SystemCursor.NSResize);
-        data.MouseCursors[(int)ImGuiMouseCursor.ResizeEw] = SDL.CreateSystemCursor(SDL.SystemCursor.EWResize);
-        data.MouseCursors[(int)ImGuiMouseCursor.ResizeNesw] = SDL.CreateSystemCursor(SDL.SystemCursor.NESWResize);
-        data.MouseCursors[(int)ImGuiMouseCursor.ResizeNwse] = SDL.CreateSystemCursor(SDL.SystemCursor.NWSEResize);
+        data.MouseCursors[(int)ImGuiMouseCursor.ResizeNS] = SDL.CreateSystemCursor(SDL.SystemCursor.NSResize);
+        data.MouseCursors[(int)ImGuiMouseCursor.ResizeEW] = SDL.CreateSystemCursor(SDL.SystemCursor.EWResize);
+        data.MouseCursors[(int)ImGuiMouseCursor.ResizeNESW] = SDL.CreateSystemCursor(SDL.SystemCursor.NESWResize);
+        data.MouseCursors[(int)ImGuiMouseCursor.ResizeNWSE] = SDL.CreateSystemCursor(SDL.SystemCursor.NWSEResize);
        data.MouseCursors[(int)ImGuiMouseCursor.Hand] = SDL.CreateSystemCursor(SDL.SystemCursor.Pointer);
-        data.MouseCursors[(int)ImGuiMouseCursor.Wait] = SDL.CreateSystemCursor(SDL.SystemCursor.Wait);
-        data.MouseCursors[(int)ImGuiMouseCursor.Progress] = SDL.CreateSystemCursor(SDL.SystemCursor.Progress);
+        // data.MouseCursors[(int)ImGuiMouseCursor.Wait] = SDL.CreateSystemCursor(SDL.SystemCursor.Wait);
+        // data.MouseCursors[(int)ImGuiMouseCursor.Progress] = SDL.CreateSystemCursor(SDL.SystemCursor.Progress);
        data.MouseCursors[(int)ImGuiMouseCursor.NotAllowed] = SDL.CreateSystemCursor(SDL.SystemCursor.NotAllowed);

        SetupPlatformHandles(ImGui.GetMainViewport(), window);
@@ -266,7 +266,7 @@ public unsafe static class ImGuiSDL3Platform
                if (GetViewportForWindowId(e.Text.WindowID) == null)
                    return false;

-                ImGui.GetIO().AddInputCharactersUTF8((byte*)e.Text.Text);
+                ImGuiNative.ImGuiIO_AddInputCharactersUTF8(io, (byte*)e.Text.Text);
                return true;
            case SDL.EventType.KeyDown:
            case SDL.EventType.KeyUp:
@@ -479,32 +479,51 @@ public unsafe static class ImGuiSDL3Platform
        UpdateGamepadAnalog(data, io, ImGuiKey.GamepadRStickDown, SDL.GamepadAxis.RightY, thumbDeadZone, 32767);
    }

-    public static void UpdateMonitors()
+    public static unsafe void UpdateMonitors()
    {
        PlatformData bd = Data;
+
        ImGuiPlatformIOPtr platformio = ImGui.GetPlatformIO();
-        platformio.Monitors.Resize(0);
-        bd.WantUpdateMonitors = false;
+
+        if (platformio.NativePtr == null)
+            return;

        var displays = SDL.GetDisplays(out int displayCount);
-        for (int n = 0; n < displayCount; n++)
+
+        if (displays == null || displayCount <= 0)
+            return;
+
+        if (platformio.Monitors.Data == IntPtr.Zero)
+            return;
+
+        bd.WantUpdateMonitors = false;
+
+        ImGuiPlatformMonitor* dst = (ImGuiPlatformMonitor*)platformio.Monitors.Data;
+
+        for (int i = 0; i < displayCount; i++)
        {
-            // Warning: the validity of monitor DPI information on Windows depends on the application DPI awareness settings, which generally needs to be set in the manifest or at runtime.
-            var displayID = displays[n];
+            var displayID = displays[i];
+
            ImGuiPlatformMonitor monitor = new ImGuiPlatformMonitor();
+
            SDL.GetDisplayBounds(displayID, out SDL.Rect r);
            monitor.MainPos = monitor.WorkPos = new Vector2(r.X, r.Y);
            monitor.MainSize = monitor.WorkSize = new Vector2(r.W, r.H);
+
            if (SDL.GetDisplayUsableBounds(displayID, out SDL.Rect r2) && r2.W > 0 && r2.H > 0)
            {
                monitor.WorkPos = new Vector2(r2.X, r2.Y);
                monitor.WorkSize = new Vector2(r2.W, r2.H);
            }
-            monitor.DpiScale = SDL.GetDisplayContentScale(displayID); // See https://wiki.libsdl.org/SDL3/README-highdpi for details.
-            monitor.PlatformHandle = (void*)n;
+
+            monitor.DpiScale = SDL.GetDisplayContentScale(displayID);
+
            if (monitor.DpiScale <= 0.0f)
-                continue; // Some accessibility applications are declaring virtual monitors with a DPI of 0, see #7902.
-            platformio.Monitors.PushBack(monitor);
+                continue;
+
+            monitor.PlatformHandle = (void*)i;
+
+            dst[i] = monitor;
        }
    }

@@ -571,16 +590,16 @@ public unsafe static class ImGuiSDL3Platform
                SDL.Keycode.RAlt         => ImGuiKey.RightAlt,
                SDL.Keycode.RGUI         => ImGuiKey.RightSuper,
                SDL.Keycode.Application  => ImGuiKey.Menu,
-                SDL.Keycode.Alpha0       => ImGuiKey.Key0,
-                SDL.Keycode.Alpha1       => ImGuiKey.Key1,
-                SDL.Keycode.Alpha2       => ImGuiKey.Key2,
-                SDL.Keycode.Alpha3       => ImGuiKey.Key3,
-                SDL.Keycode.Alpha4       => ImGuiKey.Key4,
-                SDL.Keycode.Alpha5       => ImGuiKey.Key5,
-                SDL.Keycode.Alpha6       => ImGuiKey.Key6,
-                SDL.Keycode.Alpha7       => ImGuiKey.Key7,
-                SDL.Keycode.Alpha8       => ImGuiKey.Key8,
-                SDL.Keycode.Alpha9       => ImGuiKey.Key9,
+                SDL.Keycode.Alpha0       => ImGuiKey._0,
+                SDL.Keycode.Alpha1       => ImGuiKey._1,
+                SDL.Keycode.Alpha2       => ImGuiKey._2,
+                SDL.Keycode.Alpha3       => ImGuiKey._3,
+                SDL.Keycode.Alpha4       => ImGuiKey._4,
+                SDL.Keycode.Alpha5       => ImGuiKey._5,
+                SDL.Keycode.Alpha6       => ImGuiKey._6,
+                SDL.Keycode.Alpha7       => ImGuiKey._7,
+                SDL.Keycode.Alpha8       => ImGuiKey._8,
+                SDL.Keycode.Alpha9       => ImGuiKey._9,
                SDL.Keycode.A            => ImGuiKey.A,
                SDL.Keycode.B            => ImGuiKey.B,
                SDL.Keycode.C            => ImGuiKey.C,
@@ -723,7 +742,6 @@ public unsafe static class ImGuiSDL3Platform

    private static void CreateWindow(ImGuiViewportPtr viewport)
    {
-        Program.Logger.Log(null);
        PlatformData bd = Data;

        ViewPortData vd = new ViewPortData();
@@ -758,7 +776,7 @@ public unsafe static class ImGuiSDL3Platform
        vd.Window = SDL.CreateWindow("Untitled", (int)viewport.Size.X, (int)viewport.Size.Y, flags);

        ImGuiViewportPtr? parentViewport = viewport.ParentViewportId != 0 ? ImGui.FindViewportByID(viewport.ParentViewportId) : null;
-        if (parentViewport != null && parentViewport.Value.Handle != null)
+        if (parentViewport != null)
        {
            vd.ParentWindow = GetSDLWindowFromViewport(parentViewport.Value);
            if (vd.ParentWindow != nint.Zero)
@@ -783,7 +801,6 @@ public unsafe static class ImGuiSDL3Platform

    private static void DestroyWindow(ImGuiViewportPtr viewport)
    {
-        Program.Logger.Log(null);
        ViewPortData? vd = ImGuiUserData<ViewPortData>.Get(viewport.PlatformUserData);

        if (vd != null)
@@ -796,16 +813,14 @@ public unsafe static class ImGuiSDL3Platform

        ImGuiUserData<ViewPortData>.Free(viewport.PlatformUserData);

-        viewport.PlatformUserData = null;
-        viewport.PlatformHandle = null;
-        viewport.PlatformHandleRaw = null;
-
-        Program.Logger.Log(null);
+        viewport.PlatformUserData = nint.Zero;
+        viewport.PlatformHandle = nint.Zero;
+        viewport.PlatformHandleRaw = nint.Zero;
+        
    }

    private static void ShowWindow(ImGuiViewportPtr viewport)
    {
-        Program.Logger.Log(null);
        ViewPortData vd = ImGuiUserData<ViewPortData>.Get(viewport.PlatformUserData)!;

        string? oldHint = SDL.GetHint(SDL.Hints.WindowActivateWhenShown);
@@ -815,12 +830,10 @@ public unsafe static class ImGuiSDL3Platform
        SDL.ShowWindow(vd.Window);

        SDL.SetHint(SDL.Hints.WindowActivateWhenShown, oldHint);
-        Program.Logger.Log(null);
    }

    private static void UpdateWindow(ImGuiViewportPtr viewport)
    {
-        Program.Logger.Log(null);
        ViewPortData vd = ImGuiUserData<ViewPortData>.Get(viewport.PlatformUserData)!;

        if ((viewport.Flags & ImGuiViewportFlags.TopMost) != 0)
@@ -831,7 +844,6 @@ public unsafe static class ImGuiSDL3Platform
        {
            SDL.SetWindowAlwaysOnTop(vd.Window, false);
        }
-        Program.Logger.Log(null);
    }

    private static Vector2 GetWindowPos(ImGuiViewportPtr viewport)
@@ -850,7 +862,6 @@ public unsafe static class ImGuiSDL3Platform
        ViewPortData vd = ImGuiUserData<ViewPortData>.Get(viewport.PlatformUserData)!;

        SDL.SetWindowPosition(vd.Window, (int)pos.X, (int)pos.Y);
-        Program.Logger.Log(null);
    }

    private static Vector2 GetWindowSize(ImGuiViewportPtr viewport)
@@ -868,7 +879,6 @@ public unsafe static class ImGuiSDL3Platform
        ViewPortData vd = ImGuiUserData<ViewPortData>.Get(viewport.PlatformUserData)!;

        SDL.SetWindowSize(vd.Window, (int)size.X, (int)size.Y);
-        Program.Logger.Log(null);
    }

    private static Vector2 GetWindowFramebufferScale(ImGuiViewportPtr viewport)
@@ -886,7 +896,6 @@ public unsafe static class ImGuiSDL3Platform
        ViewPortData vd = ImGuiUserData<ViewPortData>.Get(viewport.PlatformUserData)!;

        SDL.SetWindowTitle(vd.Window, title);
-        Program.Logger.Log(null);
    }

    private static void SetWindowAlpha(ImGuiViewportPtr viewport, float alpha)
@@ -894,7 +903,6 @@ public unsafe static class ImGuiSDL3Platform
        ViewPortData vd = ImGuiUserData<ViewPortData>.Get(viewport.PlatformUserData)!;

        SDL.SetWindowOpacity(vd.Window, alpha);
-        Program.Logger.Log(null);
    }

    private static void SetWindowFocus(ImGuiViewportPtr viewport)
@@ -902,7 +910,6 @@ public unsafe static class ImGuiSDL3Platform
        ViewPortData vd = ImGuiUserData<ViewPortData>.Get(viewport.PlatformUserData)!;

        SDL.RaiseWindow(vd.Window);
-        Program.Logger.Log(null);
    }

    private static bool GetWindowFocus(ImGuiViewportPtr viewport)
@@ -924,13 +931,11 @@ public unsafe static class ImGuiSDL3Platform
    private static void RenderWindow(ImGuiViewportPtr viewport)
    {
        // Renderer-backed viewport rendering is handled by ImGuiSDL3Renderer.
-        Program.Logger.Log(null);
    }

    private static void SwapBuffers(ImGuiViewportPtr viewport)
    {
        // Renderer-backed viewport presentation is handled by ImGuiSDL3Renderer.
-        Program.Logger.Log(null);
    }


@@ -1016,24 +1021,25 @@ public unsafe static class ImGuiSDL3Platform

    private static void InitMultiViewportSupport(nint window)
    {
-        Program.Logger.Log(null);
        
        ImGuiPlatformIOPtr platformIO = ImGui.GetPlatformIO();

-        platformIO.PlatformCreateWindow = (void*)Marshal.GetFunctionPointerForDelegate(CreateWindowDelegate);
-        platformIO.PlatformDestroyWindow = (void*)Marshal.GetFunctionPointerForDelegate(DestroyWindowDelegate);
-        platformIO.PlatformShowWindow = (void*)Marshal.GetFunctionPointerForDelegate(ShowWindowDelegate);
-        platformIO.PlatformSetWindowPos = (void*)Marshal.GetFunctionPointerForDelegate(SetWindowPosDelegate);
-        platformIO.PlatformGetWindowPos = (void*)Marshal.GetFunctionPointerForDelegate(GetWindowPosDelegate);
-        platformIO.PlatformSetWindowSize = (void*)Marshal.GetFunctionPointerForDelegate(SetWindowSizeDelegate);
-        platformIO.PlatformGetWindowSize = (void*)Marshal.GetFunctionPointerForDelegate(GetWindowSizeDelegate);
-        platformIO.PlatformSetWindowFocus = (void*)Marshal.GetFunctionPointerForDelegate(SetWindowFocusDelegate);
-        platformIO.PlatformGetWindowFocus = (void*)Marshal.GetFunctionPointerForDelegate(GetWindowFocusDelegate);
-        platformIO.PlatformGetWindowMinimized = (void*)Marshal.GetFunctionPointerForDelegate(GetWindowMinimizedDelegate);
-        platformIO.PlatformSetWindowTitle = (void*)Marshal.GetFunctionPointerForDelegate(SetWindowTitleDelegate);
-        platformIO.PlatformSetWindowAlpha = (void*)Marshal.GetFunctionPointerForDelegate(SetWindowAlphaDelegate);
-        platformIO.PlatformUpdateWindow = (void*)Marshal.GetFunctionPointerForDelegate(UpdateWindowDelegate);
-        platformIO.PlatformGetWindowFramebufferScale = (void*)Marshal.GetFunctionPointerForDelegate(GetWindowFramebufferScaleDelegate);
+        platformIO.Platform_CreateWindow = Marshal.GetFunctionPointerForDelegate(CreateWindowDelegate);
+        platformIO.Platform_DestroyWindow = Marshal.GetFunctionPointerForDelegate(DestroyWindowDelegate);
+        platformIO.Platform_ShowWindow = Marshal.GetFunctionPointerForDelegate(ShowWindowDelegate);
+        platformIO.Platform_SetWindowPos = Marshal.GetFunctionPointerForDelegate(SetWindowPosDelegate);
+        platformIO.Platform_GetWindowPos = Marshal.GetFunctionPointerForDelegate(GetWindowPosDelegate);
+        platformIO.Platform_SetWindowSize = Marshal.GetFunctionPointerForDelegate(SetWindowSizeDelegate);
+        platformIO.Platform_GetWindowSize = Marshal.GetFunctionPointerForDelegate(GetWindowSizeDelegate);
+        platformIO.Platform_SetWindowFocus = Marshal.GetFunctionPointerForDelegate(SetWindowFocusDelegate);
+        platformIO.Platform_GetWindowFocus = Marshal.GetFunctionPointerForDelegate(GetWindowFocusDelegate);
+        platformIO.Platform_GetWindowMinimized = Marshal.GetFunctionPointerForDelegate(GetWindowMinimizedDelegate);
+        platformIO.Platform_SetWindowTitle = Marshal.GetFunctionPointerForDelegate(SetWindowTitleDelegate);
+        platformIO.Platform_RenderWindow = Marshal.GetFunctionPointerForDelegate(RenderWindowDelegate);
+        platformIO.Platform_SwapBuffers = Marshal.GetFunctionPointerForDelegate(SwapBuffersDelegate);
+        platformIO.Platform_SetWindowAlpha = Marshal.GetFunctionPointerForDelegate(SetWindowAlphaDelegate);
+        platformIO.Platform_UpdateWindow = Marshal.GetFunctionPointerForDelegate(UpdateWindowDelegate);
+        // platformIO.Platform_GetWindowFramebufferScale = Marshal.GetFunctionPointerForDelegate(GetWindowFramebufferScaleDelegate);

        ImGuiViewportPtr mainViewport = ImGui.GetMainViewport();

@@ -1047,9 +1053,8 @@ public unsafe static class ImGuiSDL3Platform
        };

        mainViewport.PlatformUserData = ImGuiUserData<ViewPortData>.Store(vd);
-        mainViewport.PlatformHandle = (void*)(nint)SDL.GetWindowID(window);
-        
-        Program.Logger.Log(null);
+        mainViewport.PlatformHandle = (nint)SDL.GetWindowID(window);
+            

 #if WINDOWS
    mainViewport.PlatformHandleRaw = SDL.GetPointerProperty(
@@ -1062,18 +1067,18 @@ public unsafe static class ImGuiSDL3Platform

    public static ImGuiViewportPtr? GetViewportForWindowId(uint id)
    {
-        return ImGui.FindViewportByPlatformHandle((void*)(nint)id);
+        return ImGui.FindViewportByPlatformHandle((nint)id);
    }

    private static nint GetSDLWindowFromViewport(ImGuiViewportPtr viewport)
    {
-        return SDL.GetWindowFromID((uint)(nint)viewport.PlatformHandle);
+        return SDL.GetWindowFromID((uint)viewport.PlatformHandle);
    }

    private static void SetupPlatformHandles(ImGuiViewportPtr viewport, nint window)
    {
-        viewport.PlatformHandle = (void*)(nint)SDL.GetWindowID(window);
-        viewport.PlatformHandleRaw = (void*)nint.Zero;
+        viewport.PlatformHandle = (nint)SDL.GetWindowID(window);
+        viewport.PlatformHandleRaw = nint.Zero;
 #if _WIN32 && !__WINTR__
        SDL.GetPointerProperty(SDL.GetWindowProperties(window), SDL.Props.WindowWin32HWNDPointer, 0);
 #elif __APPLE__ && SDL_VIDEO_DRIVER_COCOA
@@ -1096,12 +1101,12 @@ public unsafe static class ImGuiSDL3Platform

        ImGuiIOPtr io = ImGui.GetIO();
        ImGuiPlatformIOPtr platformIo = ImGui.GetPlatformIO();
-        platformIo.PlatformGetClipboardTextFn = null;
-        platformIo.PlatformSetClipboardTextFn = null;
-        platformIo.PlatformSetImeDataFn = null;
-        platformIo.PlatformOpenInShellFn = null;
+        platformIo.Platform_GetClipboardTextFn = nint.Zero;
+        platformIo.Platform_SetClipboardTextFn = nint.Zero;
+        platformIo.Platform_SetImeDataFn = nint.Zero;
+        platformIo.Platform_OpenInShellFn = nint.Zero;
        ImGuiUserData<PlatformData>.Free(io.BackendPlatformUserData);
-        io.BackendPlatformUserData = null;
+        io.BackendPlatformUserData = nint.Zero;
    }
 }

@@ -1119,32 +1124,32 @@ public enum MouseCaptureMode
    Disabled
 }

-public unsafe static class ImGuiUserData<T> where T : class
+public static class ImGuiUserData<T> where T : class
 {
-    public static void* Store(T value)
+    public static nint Store(T value)
    {
        if (value == null)
-            return null;
+            return nint.Zero;

        GCHandle handle = GCHandle.Alloc(value, GCHandleType.Normal);
-        return (void*)GCHandle.ToIntPtr(handle);
+        return GCHandle.ToIntPtr(handle);
    }

-    public static T Get(void* ptr)
+    public static T Get(nint ptr)
    {
-        if (ptr == null)
-            return null;
+        if (ptr == nint.Zero)
+            return null!;

-        GCHandle handle = GCHandle.FromIntPtr((nint)ptr);
-        return (T)handle.Target;
+        GCHandle handle = GCHandle.FromIntPtr(ptr);
+        return (T)handle.Target!;
    }

-    public static void Free(void* ptr)
+    public static void Free(nint ptr)
    {
-        if (ptr == null)
+        if (ptr == nint.Zero)
            return;

-        GCHandle handle = GCHandle.FromIntPtr((nint)ptr);
+        GCHandle handle = GCHandle.FromIntPtr(ptr);

        if (handle.IsAllocated)
            handle.Free();