public WpfAppBar(Window window)
{
_currentPosition = new Position();
_window = window;
// Show/Hide timers.
_showTimer = new Timer();
_showTimer.AutoReset = false;
_showTimer.Elapsed += OnShowTimerElapsed;
_hideTimer = new Timer();
_hideTimer.AutoReset = true;
_hideTimer.Elapsed += OnHideTimerElapsed;
// Windows styles and events.
_window.WindowStyle = WindowStyle.None;
_window.ResizeMode = ResizeMode.NoResize;
_window.ShowInTaskbar = false;
_window.Closed += OnClose;
_window.MouseLeave += OnMouseLeave;
_window.AllowDrop = true;
_window.PreviewDragEnter += OnDragEnter;
_window.DragLeave += OnDragLeave;
Microsoft.Win32.SystemEvents.DisplaySettingsChanged += OnDisplaySettingsChanged;
// Default Values.
PopupDelay = AppBarDefaultValues.PopupDelay;
AutoHideDelay = AppBarDefaultValues.AutoHideDelay;
ReserveScreen = AppBarDefaultValues.ReserveScreen;
Docked = new DockPosition(AppBarDefaultValues.Docked);
ActiveScreen = AppBarDefaultValues.Screen;
}
/// <summary>
/// <para>
/// Requests a size and screen position for an appbar. When the request is made, the message proposes a
/// screen edge and a bounding rectangle for the appbar.
/// </para>
/// <para>
/// The system adjusts the bounding rectangle so
/// that the appbar does not interfere with the Windows taskbar or any other appbars.
/// </para>
/// </summary>
public void QueryPosition(ref Position position, DockPosition dock)
{
//TODO:
//ABM_QUERYPOS seems to do nothing on Windows 10. It gives back the exact
//same dimensions, not adjusting for the start bar
//When the dock is docked to the left for example, it doesn't take the
//entire screen length because the start bar is there. I used ABM_QUERYPOS
//to tell me how much space Windows actually assigned to to the dock
//Since ABM_QUERYPOS doesn't work properly on Windows 10, I've decided
//to only allow the screen to be reserved when docked to top of the screen,
//with the assumption that the start bar is always on the botton of the screen
//The code is being left "as is" in case I figure out the solution to it
APPBARDATA msgData = new APPBARDATA();
msgData.cbSize = Marshal.SizeOf(msgData);
msgData.hWnd = _handle;
msgData.uEdge = (uint)dock.ToNative();
position.ToNative(ref msgData.rc);
Win32AppBar.SHAppBarMessage(ABM.ABM_QUERYPOS, ref msgData);
position = Position.FromNative(ref msgData.rc);
}
public IntPtr GetAutoHide(DockPosition dock)
{
if (_toolbar == null)
{
return(IntPtr.Zero);
}
return(_toolbar.GetAutoHide(dock));
}
/// <summary>
/// Retrieves the handle to the appbar associated to the edge of the screen.
/// </summary>
/// <returns>
/// Returns the handle to the autohide appbar. The return value is 0 if an error occurs or
/// if no autohide appbar is associated with the given edge.
/// </returns>
public IntPtr GetAutoHide(DockPosition dock)
{
APPBARDATA msgData = new APPBARDATA();
msgData.cbSize = Marshal.SizeOf(msgData);
msgData.hWnd = _handle;
msgData.uEdge = (uint)dock.ToNative();
return(Win32AppBar.SHAppBarMessage(ABM.ABM_GETAUTOHIDEBAR, ref msgData));
}
public void Dock(DockPosition dock)
{
if (Docked != dock)
{
SetAutoHide(Docked, false);
}
Docked = dock;
SetAutoHide(Docked, true);
}
/// <summary>
/// Registers or unregisters an autohide appbar for an edge of the screen.
/// </summary>
/// <returns>
/// Returns true if successful, or false if an error occurs or
/// if an autohide appbar is already registered for the given edge.
/// </returns>
public bool SetAutoHide(DockPosition dock, bool autohide)
{
APPBARDATA msgData = new APPBARDATA();
msgData.cbSize = Marshal.SizeOf(msgData);
msgData.hWnd = _handle;
msgData.lParam = autohide ? Win32.TRUE : Win32.FALSE;
msgData.uEdge = (uint)dock.ToNative();
return(Win32AppBar.SHAppBarMessage(ABM.ABM_SETAUTOHIDEBAR, ref msgData).ToInt32() == Win32.TRUE);
}
void SetMinimized()
{
if (_toolbar == null)
{
return;
}
Position position = new Position();
_toolbar.SetPosition(ref position, DockPosition.Left());
}
public void SetAutoHide(DockPosition dock, bool autoHide)
{
if (_toolbar == null)
{
return;
}
bool success = _toolbar.SetAutoHide(dock, autoHide);
if (!success && autoHide)
{
//throw new AppBarException("Unable to set autohide on that edge, an autohide bar has already been set");
Debug.WriteLine("Unable to set autohide on that edge, an autohide bar has already been set");
}
}
/// <summary>
/// <para>
/// Sets the size and screen position of an appbar. The message specifies a
/// screen edge and the bounding rectangle for the appbar.
/// </para>
/// <para>
/// The system may adjust the bounding rectangle so that the appbar does not
/// interfere with the Windows taskbar or any other appbars.
/// </para>
/// </summary>
public void SetPosition(ref Position position, DockPosition dock)
{
APPBARDATA msgData = new APPBARDATA();
msgData.cbSize = Marshal.SizeOf(msgData);
msgData.hWnd = _handle;
msgData.uEdge = (uint)dock.ToNative();
position.ToNative(ref msgData.rc);
if (dock.Selected == DockEdge.Top)
{
msgData.rc.bottom = msgData.rc.bottom + 8;
}
Win32AppBar.SHAppBarMessage(ABM.ABM_SETPOS, ref msgData);
position = Position.FromNative(ref msgData.rc);
}
public void SetPosition(ref Position position, DockPosition dock)
{
Dock(dock);
CorrectPosition(ref position);
Resize(ref position);
}
