Added Dim Taskbar option (#13)

* dim taskbar option

* Update App.xaml.cs

App.xaml.cs

@@ -209,6 +209,15 @@ public void WinCloseEventProc(IntPtr hWinEventHook, uint eventType, IntPtr hwnd,
                     shadeWindows.Remove(windowShade);
                 }
             }
+
+            if(settings.DimTaskbar)
+            {
+                IntPtr taskbarHwnd = Win32.FindWindow("Shell_TrayWnd", null);
+                if (taskbarHwnd != IntPtr.Zero)
+                {
+                    Win32.SetWindowPos(taskbarHwnd, Win32.HWND_BOTTOM, 0, 0, 0, 0, Win32.SWP_NOMOVE | Win32.SWP_NOSIZE | Win32.SWP_NOACTIVATE);
+                }
+            }
         }
 
         private void UpdateDimming(IntPtr fgHwnd)
@@ -229,6 +238,15 @@ private void UpdateDimming(IntPtr fgHwnd)
                 // Finally place the dimmer window behind the first pinned or foreground
                 Win32.SetWindowPos(dimWin.Handle, firstPinned ?? fgHwnd, 0, 0, 0, 0, Win32.SWP_NOMOVE | Win32.SWP_NOSIZE | Win32.SWP_NOACTIVATE);
             }
+
+            if(settings.DimTaskbar)
+            {
+                IntPtr taskbarHwnd = Win32.FindWindow("Shell_TrayWnd", null);
+                if (taskbarHwnd != IntPtr.Zero)
+                {
+                    Win32.SetWindowPos(taskbarHwnd, Win32.HWND_BOTTOM, 0, 0, 0, 0, Win32.SWP_NOMOVE | Win32.SWP_NOSIZE | Win32.SWP_NOACTIVATE);
+                }
+            }
         }
 
         private void UpdateShade(IntPtr shadedHwnd, WindowShade windowShade)
@@ -286,6 +304,9 @@ public interface ISettings : INotifyPropertyChanged
         [Option(Alias = "dimmingEnabled", DefaultValue = false)]
         bool DimmingEnabled { get; set; }
 
+        [Option(Alias = "dimTaskbar", DefaultValue = true)]
+        bool DimTaskbar { get; set; }
+
         [Option(Alias = "brightness", DefaultValue = 50)]
         int Brightness { get; set; }
 

NotifyIconController.cs

@@ -34,6 +34,10 @@ public NotifyIconController(ISettings settings)
                             };
                         })
                         .AddHandler((b) => settings.DimmingEnabled = b))
+                    .AddToggle(option => option
+                        .SetText("Dim Taskbar?")
+                        .SetChecked(settings.DimTaskbar)
+                        .AddHandler((b) => settings.DimTaskbar = b))
                     .AddToggle(option => option
                         .SetText("Active on launch?")
                         .SetChecked(settings.ActiveOnLaunch)

Win32.cs

@@ -32,6 +32,9 @@ public static partial class Win32
         [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
         public static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);
 
+        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
+        public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
+
         public static readonly IntPtr HWND_TOP = new IntPtr(0);
         public static readonly IntPtr HWND_BOTTOM = new IntPtr(1);
         public static readonly IntPtr HWND_NOTOPMOST = new IntPtr(-2);