public void FadeControl(UserControl nextPage, bool fadeIn = true, bool right = true, EventHandler completed = null)
{
if (nextPage == null)
{
return;
}
nextPage.Background = null;
nextPage.Name = "A" + string.Join("", Guid.NewGuid().ToByteArray().Select(cur => cur.ToString("X2")));
nextPage.SetBinding(WidthProperty, new Binding("ActualWidth")
{
Mode = BindingMode.OneWay,
Source = canvasMain,
});
nextPage.SetBinding(HeightProperty, new Binding("ActualHeight")
{
Mode = BindingMode.OneWay,
Source = canvasMain,
});
if (fadeIn)
{
canvasMain.Children.Add(nextPage);
Canvas.SetTop(nextPage, 0);
}
var duration = new Duration(TimeSpan.FromMilliseconds(100));
var story = new Storyboard();
var fade = new DoubleAnimation
{
From = fadeIn ? 0.0 : 1.0,
To = fadeIn ? 1.0 : 0.0,
Duration = duration,
};
Storyboard.SetTargetProperty(fade, new PropertyPath(OpacityProperty));
story.Children.Add(fade);
var slide = new DoubleAnimation
{
From = fadeIn ? (right ? 50.0 : -50.0) : 0,
To = fadeIn ? 0.0 : (right ? 50.0 : -50.0),
Duration = duration,
};
Storyboard.SetTargetProperty(slide, new PropertyPath(Canvas.LeftProperty));
story.Children.Add(slide);
if (completed != null)
{
story.Completed += completed;
}
if (!fadeIn)
{
story.Completed += (sender, e) => canvasMain.Children.Remove(nextPage);
}
if (fadeIn && ActiveControl != null)
{
nextPage.Visibility = Visibility.Collapsed;
FadeControl(ActiveControl, false, !right, (sender, e) =>
{
nextPage.Visibility = Visibility.Visible;
nextPage.BeginStoryboard(story);
});
}
else
{
nextPage.BeginStoryboard(story);
}
ActiveControl = fadeIn ? nextPage : null;
}