void OnLayout()
{
if (Geometry.Width == 0 || Geometry.Height == 0)
{
return;
}
var bound = Geometry;
int navBarHeight;
if (_navBarIsVisible)
{
var navBound = bound;
navBarHeight = Forms.ConvertToScaledPixel(_navBar.GetDefaultHeight());
navBound.Height = navBarHeight;
_navBar.Show();
_navBar.Geometry = navBound;
_navBar.RaiseTop();
}
else
{
navBarHeight = 0;
_navBar.Hide();
}
bound.Y += navBarHeight;
bound.Height -= navBarHeight;
_viewStack.Geometry = bound;
}
void OnLayoutUpdated(object sender, LayoutEventArgs e)
{
if (_navBarIsVisible)
{
_navBarHeight = _defaultNavBarHeight;
_navBar.Show();
_navBar.Move(e.Geometry.X, e.Geometry.Y);
_navBar.Resize(e.Geometry.Width, _navBarHeight);
}
else
{
_navBarHeight = 0;
_navBar.Hide();
}
CurrentNative.Show();
CurrentNative.Move(e.Geometry.X, e.Geometry.Y + _navBarHeight);
CurrentNative.Resize(e.Geometry.Width, e.Geometry.Height - _navBarHeight);
}