1 files changed, 160 insertions, 0 deletions
diff --git a/src/Ryujinx.UI.Common/Helper/ObjectiveC.cs b/src/Ryujinx.UI.Common/Helper/ObjectiveC.cs
new file mode 100644
index 00000000..6aba377a
--- /dev/null
+++ b/src/Ryujinx.UI.Common/Helper/ObjectiveC.cs
@@ -0,0 +1,160 @@
+using System;
+using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
+
+namespace Ryujinx.UI.Common.Helper
+{
+    [SupportedOSPlatform("macos")]
+    public static partial class ObjectiveC
+    {
+        private const string ObjCRuntime = "/usr/lib/libobjc.A.dylib";
+
+        [LibraryImport(ObjCRuntime, StringMarshalling = StringMarshalling.Utf8)]
+        private static partial IntPtr sel_getUid(string name);
+
+        [LibraryImport(ObjCRuntime, StringMarshalling = StringMarshalling.Utf8)]
+        private static partial IntPtr objc_getClass(string name);
+
+        [LibraryImport(ObjCRuntime)]
+        private static partial void objc_msgSend(IntPtr receiver, Selector selector);
+
+        [LibraryImport(ObjCRuntime)]
+        private static partial void objc_msgSend(IntPtr receiver, Selector selector, byte value);
+
+        [LibraryImport(ObjCRuntime)]
+        private static partial void objc_msgSend(IntPtr receiver, Selector selector, IntPtr value);
+
+        [LibraryImport(ObjCRuntime)]
+        private static partial void objc_msgSend(IntPtr receiver, Selector selector, NSRect point);
+
+        [LibraryImport(ObjCRuntime)]
+        private static partial void objc_msgSend(IntPtr receiver, Selector selector, double value);
+
+        [LibraryImport(ObjCRuntime, EntryPoint = "objc_msgSend")]
+        private static partial IntPtr IntPtr_objc_msgSend(IntPtr receiver, Selector selector);
+
+        [LibraryImport(ObjCRuntime, EntryPoint = "objc_msgSend")]
+        private static partial IntPtr IntPtr_objc_msgSend(IntPtr receiver, Selector selector, IntPtr param);
+
+        [LibraryImport(ObjCRuntime, EntryPoint = "objc_msgSend", StringMarshalling = StringMarshalling.Utf8)]
+        private static partial IntPtr IntPtr_objc_msgSend(IntPtr receiver, Selector selector, string param);
+
+        [LibraryImport(ObjCRuntime, EntryPoint = "objc_msgSend")]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        private static partial bool bool_objc_msgSend(IntPtr receiver, Selector selector, IntPtr param);
+
+        public readonly struct Object
+        {
+            public readonly IntPtr ObjPtr;
+
+            private Object(IntPtr pointer)
+            {
+                ObjPtr = pointer;
+            }
+
+            public Object(string name)
+            {
+                ObjPtr = objc_getClass(name);
+            }
+
+            public void SendMessage(Selector selector)
+            {
+                objc_msgSend(ObjPtr, selector);
+            }
+
+            public void SendMessage(Selector selector, byte value)
+            {
+                objc_msgSend(ObjPtr, selector, value);
+            }
+
+            public void SendMessage(Selector selector, Object obj)
+            {
+                objc_msgSend(ObjPtr, selector, obj.ObjPtr);
+            }
+
+            public void SendMessage(Selector selector, NSRect point)
+            {
+                objc_msgSend(ObjPtr, selector, point);
+            }
+
+            public void SendMessage(Selector selector, double value)
+            {
+                objc_msgSend(ObjPtr, selector, value);
+            }
+
+            public Object GetFromMessage(Selector selector)
+            {
+                return new Object(IntPtr_objc_msgSend(ObjPtr, selector));
+            }
+
+            public Object GetFromMessage(Selector selector, Object obj)
+            {
+                return new Object(IntPtr_objc_msgSend(ObjPtr, selector, obj.ObjPtr));
+            }
+
+            public Object GetFromMessage(Selector selector, NSString nsString)
+            {
+                return new Object(IntPtr_objc_msgSend(ObjPtr, selector, nsString.StrPtr));
+            }
+
+            public Object GetFromMessage(Selector selector, string param)
+            {
+                return new Object(IntPtr_objc_msgSend(ObjPtr, selector, param));
+            }
+
+            public bool GetBoolFromMessage(Selector selector, Object obj)
+            {
+                return bool_objc_msgSend(ObjPtr, selector, obj.ObjPtr);
+            }
+        }
+
+        public readonly struct Selector
+        {
+            public readonly IntPtr SelPtr;
+
+            private Selector(string name)
+            {
+                SelPtr = sel_getUid(name);
+            }
+
+            public static implicit operator Selector(string value) => new(value);
+        }
+
+        public readonly struct NSString
+        {
+            public readonly IntPtr StrPtr;
+
+            public NSString(string aString)
+            {
+                IntPtr nsString = objc_getClass("NSString");
+                StrPtr = IntPtr_objc_msgSend(nsString, "stringWithUTF8String:", aString);
+            }
+
+            public static implicit operator IntPtr(NSString nsString) => nsString.StrPtr;
+        }
+
+        public readonly struct NSPoint
+        {
+            public readonly double X;
+            public readonly double Y;
+
+            public NSPoint(double x, double y)
+            {
+                X = x;
+                Y = y;
+            }
+        }
+
+        public readonly struct NSRect
+        {
+            public readonly NSPoint Pos;
+            public readonly NSPoint Size;
+
+            public NSRect(double x, double y, double width, double height)
+            {
+                Pos = new NSPoint(x, y);
+                Size = new NSPoint(width, height);
+            }
+        }
+    }
+}