private void WndProc2(IntPtr hWinEventHook, uint eventType, IntPtr handle, int idObject, int idChild, uint dwEventThread, uint dwmsEventTime)
{
if (this.handle != handle)
{
return;
}
if (eventType == (uint)Win32.EventContants.EVENT_SYSTEM_MOVESIZESTART)
{
//Log("Starting to move or resize window '{0}' ('{1}', '{2}', '{3}', '{4}').", handle, idObject, idChild, dwEventThread, dwmsEventTime);
initialPosition = GetWindowPositionOrDefault(handle);
}
else if (eventType == (uint)Win32.EventContants.EVENT_SYSTEM_MOVESIZEEND)
{
//Log("Resized or moved window '{0}' (from '{5}') ('{1}', '{2}', '{3}', '{4}').", handle, idObject, idChild, dwEventThread, dwmsEventTime, handle);
Position currentPosition = GetWindowPositionOrDefault(handle);
if (currentPosition == null)
{
return;
}
Win32.RECT offset = GetWindowFrameOffset(handle, currentPosition);
ResizeDirection resize = ResizeDirection.Empty;
MoveDirection move = MoveDirection.Empty;
if (initialPosition != null)
{
if (initialPosition.Left < currentPosition.Left)
{
move |= MoveDirection.LeftToRight;
}
else if (initialPosition.Left > currentPosition.Left)
{
move |= MoveDirection.RightToLeft;
}
if (initialPosition.Top < currentPosition.Top)
{
move |= MoveDirection.TopToBottom;
}
else if (initialPosition.Top > currentPosition.Top)
{
move |= MoveDirection.BottomToTop;
}
if (initialPosition.Width != currentPosition.Width)
{
resize |= ResizeDirection.Width;
}
if (initialPosition.Height != currentPosition.Height)
{
resize |= ResizeDirection.Height;
}
}
//Log("User state: {0}x{1} at {2}x{3}.", currentPosition.Left, currentPosition.Top, currentPosition.Width, currentPosition.Height);
StickContext left;
if (resize.HasFlag(ResizeDirection.Width))
{
left = new StickContext(currentPosition.Left, currentPosition.Width);
}
else
{
left = new StickContext(currentPosition.Left);
}
StickContext top;
if (resize.HasFlag(ResizeDirection.Height))
{
top = new StickContext(currentPosition.Top, currentPosition.Height);
}
else
{
top = new StickContext(currentPosition.Top);
}
int leftPriority = Int32.MaxValue;
int topPriority = Int32.MaxValue;
if (move.HasFlag(MoveDirection.RightToLeft) || move.HasFlag(MoveDirection.LeftToRight))
{
TryStickLeft(left, ref leftPriority);
TryStickRight(left, currentPosition, ref leftPriority);
}
if (move.HasFlag(MoveDirection.BottomToTop) || move.HasFlag(MoveDirection.TopToBottom))
{
TryStickTop(top, ref topPriority);
TryStickBottom(top, currentPosition, ref topPriority);
}
if (move == MoveDirection.Empty && resize.HasFlag(ResizeDirection.Width))
{
TryStickRight(left, currentPosition, ref leftPriority);
}
if (move == MoveDirection.Empty && resize.HasFlag(ResizeDirection.Height))
{
TryStickBottom(top, currentPosition, ref topPriority);
}
Position targetPosition = new Position(
left.NewPosition - offset.Left,
top.NewPosition - offset.Top,
(left.IsResize ? left.NewSize : currentPosition.Width) - offset.Right + offset.Left,
(top.IsResize ? top.NewSize : currentPosition.Height) - offset.Bottom + offset.Top
);
//Log("Stick state: {0}x{1} at {2}x{3}.", targetPosition.Left, targetPosition.Top, targetPosition.Width, targetPosition.Height);
Win32.SetWindowPos(
handle,
IntPtr.Zero,
targetPosition.Left,
targetPosition.Top,
targetPosition.Width,
targetPosition.Height,
0
);
}
}