void AddMenu()
{
if (_basePage == null)
{
return;
}
var menu = _basePage.SlideMenu;
if (menu == null)
{
return;
}
_basePage.HideMenuAction = () => {
if (_dragGesture == null)
{
return;
}
var rect = _dragGesture.GetHidePosition();
_popMenuOverlayRenderer.View.Animate()
.X((float)rect.left)
.Y((float)rect.top)
.SetDuration(menu.AnimationDurationMillisecond)
.SetListener(new AnimatorListener(_dragGesture, false))
.Start();
};
_basePage.ShowMenuAction = () => {
if (_dragGesture == null)
{
return;
}
var rect = _dragGesture.GetShowPosition();
_popMenuOverlayRenderer.View.Animate()
.X((float)rect.left)
.Y((float)rect.top)
.SetDuration(menu.AnimationDurationMillisecond)
.SetListener(new AnimatorListener(_dragGesture, true))
.Start();
};
if (_popMenuOverlayRenderer == null)
{
menu.Parent = (Page)_basePage;
_popMenuOverlayRenderer = Platform.CreateRendererWithContext(menu, _context);
Platform.SetRenderer(menu, _popupRenderer);
var metrics = _pageRenderer.Resources.DisplayMetrics;
var rootView = _popMenuOverlayRenderer.View;
if (_popMenuOverlayRenderer is SlideMenuDroidRenderer)
{
_dragGesture = (_popMenuOverlayRenderer as SlideMenuDroidRenderer).GragGesture;
}
if (_dragGesture == null)
{
return;
}
var rect = _dragGesture.GetHidePosition();
menu.Layout(new Xamarin.Forms.Rectangle(
rect.left / metrics.Density,
rect.top / metrics.Density,
(rect.right - rect.left) / metrics.Density,
(rect.bottom - rect.top) / metrics.Density));
_popMenuOverlayRenderer.UpdateLayout();
_popMenuOverlayRenderer.View.Visibility = ViewStates.Visible;
rootView.Layout((int)rect.left, (int)rect.top, (int)rect.right, (int)rect.bottom);
_pageRenderer.ViewGroup.AddView(rootView);
_pageRenderer.ViewGroup.BringChildToFront(rootView);
_dragGesture.NeedShowBackgroundView = (open, alpha) => {
if (open)
{
ShowBackgroundOverlay(alpha);
}
else
{
HideBackgroundOverlay();
}
};
}
}
