New Ally bindings and Touch Keyboard Support

app/Helpers/OnScreenKeyboard.cs

@@ -0,0 +1,176 @@
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+
+namespace GHelper.Helpers
+{
+    public static class OnScreenKeyboard
+    {
+        static OnScreenKeyboard()
+        {
+            var version = Environment.OSVersion.Version;
+            switch (version.Major)
+            {
+                case 6:
+                    switch (version.Minor)
+                    {
+                        case 2:
+                            // Windows 10 (ok)
+                            break;
+                    }
+                    break;
+                default:
+                    break;
+            }
+        }
+
+        private static void StartTabTip()
+        {
+            var p = Process.Start(@"C:\Program Files\Common Files\Microsoft Shared\ink\TabTip.exe");
+            int handle = 0;
+            while ((handle = NativeMethods.FindWindow("IPTIP_Main_Window", "")) <= 0)
+            {
+                Thread.Sleep(100);
+            }
+        }
+
+        public static void ToggleVisibility()
+        {
+            var type = Type.GetTypeFromCLSID(Guid.Parse("4ce576fa-83dc-4F88-951c-9d0782b4e376"));
+            var instance = (ITipInvocation)Activator.CreateInstance(type);
+            instance.Toggle(NativeMethods.GetDesktopWindow());
+            Marshal.ReleaseComObject(instance);
+        }
+
+        public static void Show()
+        {
+            int handle = NativeMethods.FindWindow("IPTIP_Main_Window", "");
+            if (handle <= 0) // nothing found
+            {
+                StartTabTip();
+                Thread.Sleep(100);
+            }
+            // on some devices starting TabTip don't show keyboard, on some does  ¯\_(ツ)_/¯
+            if (!IsOpen())
+            {
+                ToggleVisibility();
+            }
+        }
+
+        public static void Hide()
+        {
+            if (IsOpen())
+            {
+                ToggleVisibility();
+            }
+        }
+
+
+        public static bool Close()
+        {
+            // find it
+            int handle = NativeMethods.FindWindow("IPTIP_Main_Window", "");
+            bool active = handle > 0;
+            if (active)
+            {
+                // don't check style - just close
+                NativeMethods.SendMessage(handle, NativeMethods.WM_SYSCOMMAND, NativeMethods.SC_CLOSE, 0);
+            }
+            return active;
+        }
+
+        public static bool IsOpen()
+        {
+            return GetIsOpen1709() ?? GetIsOpenLegacy();
+        }
+
+
+        [DllImport("user32.dll", SetLastError = false)]
+        private static extern IntPtr FindWindowEx(IntPtr parent, IntPtr after, string className, string title = null);
+
+        [DllImport("user32.dll", SetLastError = false)]
+        private static extern uint GetWindowLong(IntPtr wnd, int index);
+
+        private static bool? GetIsOpen1709()
+        {
+            // if there is a top-level window - the keyboard is closed
+            var wnd = FindWindowEx(IntPtr.Zero, IntPtr.Zero, WindowClass1709, WindowCaption1709);
+            if (wnd != IntPtr.Zero)
+                return false;
+
+            var parent = IntPtr.Zero;
+            for (; ; )
+            {
+                parent = FindWindowEx(IntPtr.Zero, parent, WindowParentClass1709);
+                if (parent == IntPtr.Zero)
+                    return null; // no more windows, keyboard state is unknown
+
+                // if it's a child of a WindowParentClass1709 window - the keyboard is open
+                wnd = FindWindowEx(parent, IntPtr.Zero, WindowClass1709, WindowCaption1709);
+                if (wnd != IntPtr.Zero)
+                    return true;
+            }
+        }
+
+        private static bool GetIsOpenLegacy()
+        {
+            var wnd = FindWindowEx(IntPtr.Zero, IntPtr.Zero, WindowClass);
+            if (wnd == IntPtr.Zero)
+                return false;
+
+            var style = GetWindowStyle(wnd);
+            return style.HasFlag(WindowStyle.Visible)
+                && !style.HasFlag(WindowStyle.Disabled);
+        }
+
+        private const string WindowClass = "IPTip_Main_Window";
+        private const string WindowParentClass1709 = "ApplicationFrameWindow";
+        private const string WindowClass1709 = "Windows.UI.Core.CoreWindow";
+        private const string WindowCaption1709 = "Microsoft Text Input Application";
+
+        private enum WindowStyle : uint
+        {
+            Disabled = 0x08000000,
+            Visible = 0x10000000,
+        }
+
+        private static WindowStyle GetWindowStyle(IntPtr wnd)
+        {
+            return (WindowStyle)GetWindowLong(wnd, -16);
+        }
+
+    }
+
+
+    [ComImport]
+    [Guid("37c994e7-432b-4834-a2f7-dce1f13b834b")]
+    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+    interface ITipInvocation
+    {
+        void Toggle(IntPtr hwnd);
+    }
+
+    internal static class NativeMethods
+    {
+        [DllImport("user32.dll", EntryPoint = "FindWindow")]
+        internal static extern int FindWindow(string lpClassName, string lpWindowName);
+
+        [DllImport("user32.dll", EntryPoint = "SendMessage")]
+        internal static extern int SendMessage(int hWnd, uint Msg, int wParam, int lParam);
+
+        [DllImport("user32.dll", EntryPoint = "GetDesktopWindow", SetLastError = false)]
+        internal static extern IntPtr GetDesktopWindow();
+
+        [DllImport("user32.dll", EntryPoint = "GetWindowLong")]
+        internal static extern int GetWindowLong(int hWnd, int nIndex);
+
+        internal const int GWL_STYLE = -16;
+        internal const int GWL_EXSTYLE = -20;
+        internal const int WM_SYSCOMMAND = 0x0112;
+        internal const int SC_CLOSE = 0xF060;
+
+        internal const int WS_DISABLED = 0x08000000;
+
+        internal const int WS_VISIBLE = 0x10000000;
+
+    }
+}