Moved direct WinAPI access into a service

Eve-O-Preview/DwmAPI/Implementation/WindowManager.cs

@@ -0,0 +1,52 @@
+using System;
+using EveOPreview.DwmInterop;
+
+namespace EveOPreview.DwmAPI
+{
+	class WindowManager : IWindowManager
+	{
+		public WindowManager()
+		{
+			this.IsCompositionEnabled = DwmApiNativeMethods.DwmIsCompositionEnabled();
+		}
+
+		public bool IsCompositionEnabled { get; }
+
+		public IntPtr GetForegroundWindowHandle()
+		{
+			return User32NativeMethods.GetForegroundWindow();
+		}
+
+		public void ActivateWindow(IntPtr handle)
+		{
+			User32NativeMethods.SetForegroundWindow(handle);
+
+			int style = User32NativeMethods.GetWindowLong(handle, InteropConstants.GWL_STYLE);
+
+			if ((style & InteropConstants.WS_MINIMIZE) == InteropConstants.WS_MINIMIZE)
+			{
+				User32NativeMethods.ShowWindowAsync(handle, InteropConstants.SW_SHOWNORMAL);
+			}
+		}
+
+		public void DeactivateWindow(IntPtr handle)
+		{
+			User32NativeMethods.SendMessage(handle, InteropConstants.WM_SYSCOMMAND, InteropConstants.SC_MINIMIZE, 0);
+		}
+
+		public void MoveWindow(IntPtr handle, int left, int top, int width, int height)
+		{
+			User32NativeMethods.MoveWindow(handle, left, top, width, height, true);
+		}
+
+		public void GetWindowCoordinates(IntPtr handle, out int left, out int top, out int right, out int bottom)
+		{
+			User32NativeMethods.GetWindowRect(handle, out RECT windowRectangle);
+
+			left = windowRectangle.Left;
+			top = windowRectangle.Top;
+			right = windowRectangle.Right;
+			bottom = windowRectangle.Bottom;
+		}
+	}
+}