public RegionSelectorWindow(
[NotNull] IFactory <IRegionSelectorViewModel, ICloseController <RegionSelectorResult> > viewModelFactory)
{
InitializeComponent();
Disposable.Create(() => Log.Debug("RegionSelectorWindow disposed")).AddTo(anchors);
Closed += OnClosed;
Loaded += OnLoaded;
CloseController = new ParameterizedCloseController <Window, RegionSelectorResult>(this,
result =>
{
var windowHandle = new WindowInteropHelper(this).Handle;
var state = new { IsVisible, Visibility, IsActive };
if (state.IsVisible && state.Visibility == Visibility.Visible)
{
Log.Debug($"[{windowHandle.ToHexadecimal()}] Closing RegionSelector window({state}), result - {result.DumpToTextRaw()}");
Result = result;
Close();
}
else
{
Log.Debug($"[{windowHandle.ToHexadecimal()}] Ignoring Close request for RegionSelector window({state}) - already closed");
}
});
viewModel = viewModelFactory.Create(CloseController).AddTo(anchors);
DataContext = viewModel;
}
private void OnLoaded(object sender, RoutedEventArgs e)
{
this.Loaded -= OnLoaded;
Log.Info("HookForm loaded, applying style...");
var hwnd = new WindowInteropHelper(this).EnsureHandle();
Log.Debug($"HookForm handle: {hwnd.ToHexadecimal()}");
UnsafeNative.HideSystemMenu(hwnd);
UnsafeNative.SetWindowExTransparent(hwnd);
UnsafeNative.SetWindowRgn(hwnd, Rectangle.Empty);
Log.Info("HookForm successfully initialized");
}
private void OnLoaded(object sender, RoutedEventArgs e)
{
var windowHandle = new WindowInteropHelper(this).Handle;
Log.Debug($"[{windowHandle.ToHexadecimal()}] Window loaded");
var screen = System.Windows.Forms.Screen.FromPoint(System.Windows.Forms.Control.MousePosition);
var workingArea = screen.WorkingArea;
Left = workingArea.Left;
Top = workingArea.Top;
Width = workingArea.Width;
Height = workingArea.Height;
WindowState = WindowState.Maximized;
if (!UnsafeNative.SetForegroundWindow(windowHandle))
{
Log.Warn($"[{windowHandle.ToHexadecimal()}] Failed to bring window to front");
}
var closeWindowSink = new Subject <string>();
Disposable.Create(() => closeWindowSink.OnNext("window is disposed"))
.AddTo(anchors);
Observable.Merge(
Observable.FromEventPattern <KeyEventHandler, KeyEventArgs>(h => PreviewKeyDown += h, h => PreviewKeyDown -= h)
.Where(x => x.EventArgs.Key == Key.Escape)
.Select(x => "ESC pressed"),
Observable.FromEventPattern <RoutedEventHandler, RoutedEventArgs>(h => LostFocus += h, h => LostFocus -= h).Select(x => "window LostFocus"),
Observable.FromEventPattern <EventHandler, EventArgs>(h => Deactivated += h, h => Deactivated -= h).Select(x => "window Deactivated"))
.Subscribe(closeWindowSink)
.AddTo(anchors);
closeWindowSink
.Take(1)
.Subscribe(reason => CloseController.Close(new RegionSelectorResult()
{
Reason = reason
}))
.AddTo(anchors);
viewModel.SelectWindow()
.Subscribe(
result =>
{
CloseController.Close(result);
},
Log.HandleException,
() => { closeWindowSink.OnNext("region selection cancelled"); })
.AddTo(anchors);
viewModel.WhenAnyValue(x => x.SelectionCandidate)
.Subscribe(
regionResult =>
{
if (regionResult == null || !regionResult.IsValid)
{
RegionCandidate.Visibility = Visibility.Collapsed;
return;
}
RegionCandidate.Visibility = Visibility.Visible;
var bounds = regionResult.Window.WindowBounds.ScaleToWpf();
Canvas.SetLeft(RegionCandidate, bounds.X);
Canvas.SetTop(RegionCandidate, bounds.Y);
RegionCandidate.Width = bounds.Width;
RegionCandidate.Height = bounds.Height;
})
.AddTo(anchors);
}