private void ActivateAndFocusMainWindow()
{
// What happens below looks a bit weird, but for Switcheroo to get focus when using the Alt+Tab hook,
// it is needed to simulate an Alt keypress will bring Switcheroo to the foreground. Otherwise Switcheroo
// will become the foreground window, but the previous window will retain focus, and receive keep getting
// the keyboard input.
// http://www.codeproject.com/Tips/76427/How-to-bring-window-to-top-with-SetForegroundWindo
var thisWindowHandle = new WindowInteropHelper(this).Handle;
var thisWindow = new AppWindow(thisWindowHandle);
var altKey = new KeyboardKey(Keys.Alt);
var altKeyPressed = false;
// Press the Alt key if it is not already being pressed
if ((altKey.AsyncState & 0x8000) == 0)
{
altKey.Press();
altKeyPressed = true;
}
// Bring the Switcheroo window to the foreground
Show();
SystemWindow.ForegroundWindow = thisWindow;
Activate();
// Release the Alt key if it was pressed above
if (altKeyPressed)
{
altKey.Release();
}
}
private void MoveToScreen(AppWindow appWindow)
{
var fromScreen = Screen.FromRectangle(appWindow.Rectangle);
var toScreen = Screen.FromPoint(System.Windows.Forms.Control.MousePosition);
if (fromScreen.Bounds == toScreen.Bounds)
{
return;
}
if (appWindow.WindowState == FormWindowState.Maximized)
{
appWindow.WindowState = FormWindowState.Normal;
appWindow.Position = toScreen.Bounds;
appWindow.WindowState = FormWindowState.Maximized;
return;
}
var newPos = appWindow.Position;
var xOffset = fromScreen.Bounds.Location.X - toScreen.Bounds.Location.X;
var yOffset = fromScreen.Bounds.Location.Y - toScreen.Bounds.Location.Y;
newPos.Left -= xOffset;
newPos.Right -= xOffset;
newPos.Top -= yOffset;
newPos.Bottom -= yOffset;
appWindow.Position = newPos;
}
public String IconImageDataUri(S.AppWindow self)
{
var key = "IconImageDataUri-" + self.HWnd;
var iconImageDataUri = System.Runtime.Caching.MemoryCache.Default.Get(key) as String;;
if (iconImageDataUri == null)
{
var iconImage = self.IconImage;
try
{
using (MemoryStream memoryStream = new MemoryStream())
{
BitmapEncoder encoder = new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(iconImage));
encoder.Save(memoryStream);
var b64String = Convert.ToBase64String(memoryStream.ToArray());
iconImageDataUri = "data:image/png;base64," + b64String;
System.Runtime.Caching.MemoryCache.Default.Add(key, iconImageDataUri, DateTimeOffset.Now.AddHours(1));
}
}
catch {
return(null);
}
}
return(iconImageDataUri);
}
/// <summary>
/// Switches the window associated with the selected item.
/// </summary>
private void Switch()
{
if (lb.Items.Count > 0)
{
AppWindow win = (AppWindow)lb.SelectedItem ?? (AppWindow)lb.Items[0];
win.SwitchTo();
}
Hide();
}
private void CloseWindow(object sender, ExecutedRoutedEventArgs e)
{
if (lb.Items.Count > 0)
{
Hide();
AppWindow win = (AppWindow)lb.SelectedItem;
win.PostClose();
win.SwitchTo();
}
else
{
Hide();
}
e.Handled = true;
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
var handle = (IntPtr)value;
var key = "IconImage-" + handle;
var shortCacheKey = key + "-shortCache";
var longCacheKey = key + "-longCache";
var iconImage = MemoryCache.Default.Get(shortCacheKey) as BitmapImage;
if (iconImage == null)
{
var window = new AppWindow(handle);
var icon = ShouldUseSmallTaskbarIcons() ? window.SmallWindowIcon : window.LargeWindowIcon;
iconImage = _iconToBitmapConverter.Convert(icon) ?? new BitmapImage();
MemoryCache.Default.Add(shortCacheKey, iconImage, DateTimeOffset.Now.AddSeconds(5));
MemoryCache.Default.Add(longCacheKey, iconImage, DateTimeOffset.Now.AddMinutes(120));
}
return(iconImage);
}
public AppWindowViewModel(AppWindow appWindow)
{
AppWindow = appWindow;
}
private static bool EnumWindows(IntPtr hWnd, int lParam)
{
if (!WinApi.IsWindowVisible(hWnd))
return true;
var title = new StringBuilder(256);
WinApi.GetWindowText(hWnd, title, 256);
if (string.IsNullOrEmpty(title.ToString())) {
return true;
}
//Exclude windows on the exclusion list
if (ExceptionList.Contains(title.ToString())) {
return true;
}
if (title.Length != 0 || (title.Length == 0 & hWnd != WinApi.statusbar))
{
var appWindow = new AppWindow(hWnd);
if (appWindow.IsAltTabWindow())
{
WindowList.Add(appWindow);
}
}
return true;
}
