internal virtual void afterAppBarPos(bool isSameCoords, NativeMethods.Rect rect)
{
// apparently the taskbars like to pop up when app bars change
if (Settings.Instance.EnableTaskbar && !Startup.IsShuttingDown)
{
AppBarHelper.SetWinTaskbarState(AppBarHelper.WinTaskbarState.AutoHide);
AppBarHelper.SetWinTaskbarVisibility((int)NativeMethods.SetWindowPosFlags.SWP_HIDEWINDOW);
}
if (!isSameCoords)
{
var timer = new DispatcherTimer {
Interval = TimeSpan.FromSeconds(0.1)
};
timer.Start();
timer.Tick += (sender1, args) =>
{
// set position again, since WPF may have overridden the original change from AppBarHelper
setAppBarPosition(rect);
if (Screen.Primary && WindowManager.Instance.DesktopWindow != null)
{
WindowManager.Instance.DesktopWindow.ResetPosition();
}
timer.Stop();
};
}
}
protected void UnregisterAppBar()
{
if (AppBarHelper.appBars.Contains(Handle))
{
AppBarHelper.RegisterBar(this, ActualWidth * dpiScale, desiredHeight * dpiScale);
}
}
protected void RegisterAppBar()
{
if (!Shell.IsCairoRunningAsShell && enableAppBar && !AppBarHelper.appBars.Contains(Handle))
{
appbarMessageId = AppBarHelper.RegisterBar(this, ActualWidth * dpiScale, desiredHeight * dpiScale, appBarEdge);
}
}
internal void setScreenPosition()
{
// set our position if running as shell, otherwise let AppBar do the work
if (Shell.IsCairoRunningAsShell || !enableAppBar)
{
delaySetPosition();
}
else if (enableAppBar)
{
AppBarHelper.ABSetPos(this, ActualWidth * dpiScale, desiredHeight * dpiScale, appBarEdge);
}
}
private void OnSourceInitialized(object sender, EventArgs e)
{
// set up helper and get handle
helper = new WindowInteropHelper(this);
Handle = helper.Handle;
// set up window procedure
HwndSource source = HwndSource.FromHwnd(helper.Handle);
source.AddHook(new HwndSourceHook(WndProc));
// set initial DPI. We do it here so that we get the correct value when DPI has changed since initial user logon to the system.
if (Screen.Primary)
{
Shell.DpiScale = PresentationSource.FromVisual(Application.Current.MainWindow).CompositionTarget.TransformToDevice.M11;
}
dpiScale = PresentationSource.FromVisual(this).CompositionTarget.TransformToDevice.M11;
setPosition();
if (Shell.IsCairoRunningAsShell)
{
// set position again, on a delay, in case one display has a different DPI. for some reason the system overrides us if we don't wait
delaySetPosition();
}
// register appbar
if (!Shell.IsCairoRunningAsShell && enableAppBar)
{
appbarMessageId = AppBarHelper.RegisterBar(this, ActualWidth * dpiScale, desiredHeight * dpiScale, appBarEdge);
}
// hide from alt-tab etc
Shell.HideWindowFromTasks(Handle);
// register for full-screen notifications
FullScreenHelper.Instance.FullScreenApps.CollectionChanged += FullScreenApps_CollectionChanged;
postInit();
}
internal virtual void AfterAppBarPos(bool isSameCoords, NativeMethods.Rect rect)
{
// apparently the TaskBars like to pop up when AppBars change
if (Settings.Instance.EnableTaskbar && !Startup.IsShuttingDown)
{
AppBarHelper.HideWindowsTaskbar();
}
if (!isSameCoords)
{
var timer = new DispatcherTimer {
Interval = TimeSpan.FromSeconds(0.1)
};
timer.Start();
timer.Tick += (sender1, args) =>
{
// set position again, since WPF may have overridden the original change from AppBarHelper
SetAppBarPosition(rect);
timer.Stop();
};
}
}
private void OnClosing(object sender, CancelEventArgs e)
{
IsClosing = true;
customClosing();
if (Startup.IsShuttingDown && Screen.Primary)
{
// unregister appbar
if (AppBarHelper.appBars.Contains(Handle))
{
AppBarHelper.RegisterBar(this, ActualWidth * dpiScale, desiredHeight * dpiScale);
}
// unregister full-screen notifications
FullScreenHelper.Instance.FullScreenApps.CollectionChanged -= FullScreenApps_CollectionChanged;
// dispose the full screen helper since we are the primary instance
FullScreenHelper.Instance.Dispose();
}
else if (WindowManager.Instance.IsSettingDisplays || Startup.IsShuttingDown)
{
// unregister appbar
if (AppBarHelper.appBars.Contains(Handle))
{
AppBarHelper.RegisterBar(this, ActualWidth * dpiScale, desiredHeight * dpiScale);
}
// unregister full-screen notifications
FullScreenHelper.Instance.FullScreenApps.CollectionChanged -= FullScreenApps_CollectionChanged;
}
else
{
IsClosing = false;
e.Cancel = true;
}
}
private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
if (msg == appbarMessageId && appbarMessageId != -1)
{
switch ((NativeMethods.AppBarNotifications)wParam.ToInt32())
{
case NativeMethods.AppBarNotifications.PosChanged:
AppBarHelper.ABSetPos(this, ActualWidth * dpiScale, desiredHeight * dpiScale, appBarEdge);
break;
case NativeMethods.AppBarNotifications.WindowArrange:
if ((int)lParam != 0) // before
{
Visibility = Visibility.Collapsed;
}
else // after
{
Visibility = Visibility.Visible;
}
break;
case NativeMethods.AppBarNotifications.FullScreenApp:
AppBarHelper.SetWinTaskbarVisibility((int)NativeMethods.SetWindowPosFlags.SWP_HIDEWINDOW);
break;
}
handled = true;
}
else if (msg == (int)NativeMethods.WM.ACTIVATE && enableAppBar && !Shell.IsCairoRunningAsShell && !Startup.IsShuttingDown)
{
AppBarHelper.AppBarActivate(hwnd);
}
else if (msg == (int)NativeMethods.WM.WINDOWPOSCHANGING)
{
// Extract the WINDOWPOS structure corresponding to this message
NativeMethods.WINDOWPOS wndPos = NativeMethods.WINDOWPOS.FromMessage(lParam);
// Determine if the z-order is changing (absence of SWP_NOZORDER flag)
// If we are intentionally trying to become topmost, make it so
if (isRaising && (wndPos.flags & NativeMethods.SetWindowPosFlags.SWP_NOZORDER) == 0)
{
// Sometimes Windows thinks we shouldn't go topmost, so poke here to make it happen.
wndPos.hwndInsertAfter = (IntPtr)NativeMethods.WindowZOrder.HWND_TOPMOST;
wndPos.UpdateMessage(lParam);
}
}
else if (msg == (int)NativeMethods.WM.WINDOWPOSCHANGED && enableAppBar && !Shell.IsCairoRunningAsShell && !Startup.IsShuttingDown)
{
AppBarHelper.AppBarWindowPosChanged(hwnd);
}
else if (msg == (int)NativeMethods.WM.DPICHANGED)
{
if (Screen.Primary)
{
Shell.DpiScale = (wParam.ToInt32() & 0xFFFF) / 96d;
}
dpiScale = (wParam.ToInt32() & 0xFFFF) / 96d;
setScreenProperties(ScreenSetupReason.DpiChange);
}
else if (msg == (int)NativeMethods.WM.DISPLAYCHANGE)
{
setScreenProperties(ScreenSetupReason.DisplayChange);
handled = true;
}
else if (msg == (int)NativeMethods.WM.DEVICECHANGE && (int)wParam == 0x0007)
{
setScreenProperties(ScreenSetupReason.DeviceChange);
handled = true;
}
// call custom implementations' window procedure
return(customWndProc(hwnd, msg, wParam, lParam, ref handled));
}