Use Godot clipboard (C#)

pkdawson · Sep 3, 2024 · 9eb2b1f · 9eb2b1f
1 parent b75940b
commit 9eb2b1f
Showing 1 changed file with 26 additions and 0 deletions.
diff --git a/addons/imgui-godot/ImGuiGodot/Internal/State.cs b/addons/imgui-godot/ImGuiGodot/Internal/State.cs
@@ -17,6 +17,7 @@ private enum RendererType
 
     private static readonly IntPtr _backendName = Marshal.StringToCoTaskMemAnsi("godot4_net");
     private static IntPtr _rendererName = IntPtr.Zero;
+    private static nint _clipBuf = 0;
     private IntPtr _iniFilenameBuffer = IntPtr.Zero;
 
     internal Viewports Viewports { get; }
@@ -39,6 +40,14 @@ private delegate void PlatformSetImeDataFn(
         ImGuiPlatformImeDataPtr data);
     private static readonly PlatformSetImeDataFn _setImeData = SetImeData;
 
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+    private delegate void SetClipboardTextFn(nint ud, nint text);
+    private static readonly SetClipboardTextFn _setClipboardText = SetClipboardText;
+
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+    private delegate nint GetClipboardTextFn(nint ud);
+    private static readonly GetClipboardTextFn _getClipboardText = GetClipboardText;
+
     public State(IRenderer renderer)
     {
         Renderer = renderer;
@@ -71,6 +80,10 @@ public State(IRenderer renderer)
             io.NativePtr->BackendPlatformName = (byte*)_backendName;
             io.NativePtr->BackendRendererName = (byte*)_rendererName;
             io.NativePtr->PlatformSetImeDataFn = Marshal.GetFunctionPointerForDelegate(_setImeData);
+            io.NativePtr->SetClipboardTextFn = Marshal.GetFunctionPointerForDelegate(
+                _setClipboardText);
+            io.NativePtr->GetClipboardTextFn = Marshal.GetFunctionPointerForDelegate(
+                _getClipboardText);
         }
 
         Viewports = new Viewports();
@@ -207,5 +220,18 @@ private static void SetImeData(nint ctx, ImGuiViewportPtr vp, ImGuiPlatformImeDa
             DisplayServer.WindowSetImePosition(pos, windowID);
         }
     }
+
+    private static void SetClipboardText(nint ud, nint text)
+    {
+        DisplayServer.ClipboardSet(Marshal.PtrToStringUTF8(text));
+    }
+
+    private static nint GetClipboardText(nint ud)
+    {
+        if (_clipBuf != 0)
+            Marshal.FreeCoTaskMem(_clipBuf);
+        _clipBuf = Marshal.StringToCoTaskMemUTF8(DisplayServer.ClipboardGet());
+        return _clipBuf;
+    }
 }
 #endif