void UpdateCurrentShellContent(ShellContent content)
{
_currentContent?.Hide();
if (content == null)
{
_currentContent = null;
return;
}
Native.Page native = null;
if (_contentToPage.ContainsKey(content))
{
native = _contentToPage[content];
}
else
{
native = CreateShellContent(content);
Control.PackEnd(native);
_contentToPage.Add(content, native);
}
_currentContent = native;
_currentContent.Show();
return;
}
Native.Page CreateShellContent(ShellContent content)
{
Page xpage = ((IShellContentController)content).GetOrCreateContent();
Native.Page page = Platform.GetOrCreateRenderer(xpage).NativeView as Native.Page;
page.BackgroundColor = (xpage.BackgroundColor != Color.Default ? xpage.BackgroundColor.ToNative() : EColor.White);
return(page);
}
EvasObject GetOrCreatePage(Page page)
{
Native.Page native = Platform.GetOrCreateRenderer(page).NativeView as Native.Page;
_pageToNative[page] = native;
_nativeToPage[native] = page;
native.BackgroundColor = (page.BackgroundColor != Xamarin.Forms.Color.Default ? page.BackgroundColor.ToNative() : ElmSharp.Color.White);
PackEnd(native);
return(native);
}
protected override void OnElementChanged(ElementChangedEventArgs <Page> e)
{
if (null == _page)
{
_page = new Native.Page(Forms.NativeParent);
_page.LayoutUpdated += OnLayoutUpdated;
SetNativeView(_page);
}
base.OnElementChanged(e);
}
protected override void OnElementChanged(ElementChangedEventArgs <Page> e)
{
if (null == _page)
{
_page = new Native.Page(Forms.NativeParent);
_page.LayoutUpdated += OnLayoutUpdated;
SetNativeView(_page);
}
if (Forms.UseSkiaSharp)
{
_backgroundCanvas = new Lazy <SKCanvasView>(() =>
{
var canvas = new SKCanvasView(Forms.NativeParent);
canvas.PassEvents = true;
canvas.PaintSurface += OnBackgroundPaint;
canvas.Show();
_page.Children.Add(canvas);
canvas.Lower();
return(canvas);
});
}
base.OnElementChanged(e);
}