void LayoutMenu()
{
if (!CheckPageAndMenu())
{
return;
}
var menu = _basePage.SlideMenu;
_dragGesture = DragGestureFactory.GetGestureByView(menu);
_dragGesture.RequestLayout = (l, t, r, b, density) =>
{
menu.Layout(new Xamarin.Forms.Rectangle(
l,
t,
(r - l),
(b - t)));
Canvas.SetLeft(_popMenuOverlayRenderer, l);
Canvas.SetTop(_popMenuOverlayRenderer, t);
Canvas.SetZIndex(_popMenuOverlayRenderer, 254);
_popMenuOverlayRenderer.UpdateLayout();
_mainCanvas.UpdateLayout();
};
_dragGesture.NeedShowBackgroundView = (open, alpha) =>
{
if (open)
{
ShowBackgroundOverlay(alpha);
}
else
{
HideBackgroundOverlay();
}
};
_basePage.HideMenuAction = () =>
{
if (_dragGesture == null)
{
return;
}
_dragGesture.LayoutHideStatus();
// DoubleAnimation wasn't supported by UWP?
//DoubleAnimation dal = new DoubleAnimation();
//dal.From = Canvas.GetLeft(_popMenuOverlayRenderer);
//dal.To = rectp.left;
//dal.Duration = new Duration(TimeSpan.FromMilliseconds(menu.AnimationDurationMillisecond));
//DoubleAnimation dat = new DoubleAnimation();
//dat.From = Canvas.GetTop(_popMenuOverlayRenderer);
//dat.To = rectp.top;
//dat.Duration = new Duration(TimeSpan.FromMilliseconds(menu.AnimationDurationMillisecond));
//(_popMenuOverlayRenderer as UIElement).BeginAnimation(Canvas.LeftProperty, dal);
};
_basePage.ShowMenuAction = () =>
{
if (_dragGesture == null)
{
return;
}
_dragGesture.LayoutShowStatus();
};
if (_popMenuOverlayRenderer == null)
{
_popMenuOverlayRenderer = Platform.CreateRenderer(menu) as LayoutRenderer;
_popMenuOverlayRenderer.PointerPressed += menuOverlayRenderer_PointerPressed;
_popMenuOverlayRenderer.PointerMoved += menuOverlayRenderer_PointerMoved;
_popMenuOverlayRenderer.PointerReleased += menuOverlayRenderer_PointerReleased;
_popMenuOverlayRenderer.PointerExited += menuOverlayRenderer_PointerReleased;
}
var rect = _dragGesture.GetHidePosition();
menu.Layout(new Xamarin.Forms.Rectangle(
rect.left,
rect.top,
(rect.right - rect.left),
(rect.bottom - rect.top)));
Canvas.SetLeft(_popMenuOverlayRenderer, rect.left);
Canvas.SetTop(_popMenuOverlayRenderer, rect.top);
_popMenuOverlayRenderer.Visibility = menu.IsVisible ? Visibility.Visible : Visibility.Collapsed;
_popMenuOverlayRenderer.UpdateLayout();
}
