def OnSystemMessage( self, hWnd, messageID, wParam, lParam ): """Handle an appbar system message These messages come when the windows taskbar is moved or resized (or otherwise changed) and they have the effect of requiring a resize of our taskbar (normally). Unfortunately, there's nothing I can see which tells us whether the taskbar is underneath our currently-reserved area, so we wind up with a possible overlap condition if the taskbar is dragged to our side of the screen :( . wParam == 3 -- cascade or tile of windows ABN_WINDOWARRANGE notification wParam == 1 -- position changed for the appbar (incl. resize window) ABN_POSCHANGED notification wParam == 0 -- auto-hide/always-on-top state changed for the taskbar ABN_STATECHANGE notification """ if wParam == 1: if self.FORCE_REDOCK_ON_SYSTEM_MESSAGE: self.Undock() self.Dock() else: self.OnMove() events.send( self, events.AppBarSystemMessageEvent, wParam = wParam, lParam = lParam, )
def Undock( self ): """Undock the frame""" try: if self._data: self._data.remove() events.send( self, events.AppBarDockEvent, self.dockSide, 0, # docking false self.dockedPosition[:2], self.dockedPosition[2:], ) finally: try: while self._data in self._registeredBars: self._registeredBars.remove( self._data ) finally: self.docked = 0 self._data = None
def Dock( self, side = None ):
"""Dock the AppFrame on the given side
side {'l','r','t','b'} -- string indicating
the side of the screen on which to dock,
or None to dock on the currently-set side.
"""
if side and side != self.dockSide:
if self.docked:
self.Undock()
if self.docked:
return 0
self._data = data = _appbar.ApplicationBar()
# resize to be somewhat appropriate...
side = side or self.dockSide
self.dockSide = side
data.new( self.GetHandle(), edge = side)
x,y,w,h = self.dockedPosition = data.setPosition( self.CalculateRectangle(dockSide=side) )
if not self._callback:
self._callback = winmsgproc.MessageCallback(
hWnd = self.GetHandle(),
messageMap = {
data.uCallbackMessage: self.OnSystemMessage,
},
)
self.docked = 1
self._registeredBars.append( data )
self.SetSize( (w,h) )
self.SetPosition( (x,y) )
events.send(
self,
events.AppBarDockEvent,
side,
1, # docking true
(x,y),
(w,h),
)
