C4IT-F4SD-Client/FasdDesktopUi/Pages/LevelUpPage/LevelUpPage.xaml.cs

using System;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Media;
using System.Windows.Media.Animation;

namespace FasdDesktopUi.Pages.LevelUpPage
{
    public partial class LevelUpPage : Window
    {
        public int NewLevel
        {
            get { return (int)GetValue(NewLevelProperty); }
            set { SetValue(NewLevelProperty, value); }
        }

        public static readonly DependencyProperty NewLevelProperty =
            DependencyProperty.Register(nameof(NewLevel), typeof(int), typeof(LevelUpPage), new PropertyMetadata(0, new PropertyChangedCallback(HandleLevelChanged)));

        private static void HandleLevelChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            if (!(d is LevelUpPage levelupPage))
                return;

            levelupPage.LastLevelTextBlock.Text = (levelupPage.NewLevel - 1).ToString();
            levelupPage.NewLevelTextBlock.Text = levelupPage.NewLevel.ToString();
        }

        public string LevelTitle
        {
            get { return (string)GetValue(LevelTitleProperty); }
            set { SetValue(LevelTitleProperty, value); }
        }

        public static readonly DependencyProperty LevelTitleProperty =
            DependencyProperty.Register(nameof(LevelTitle), typeof(string), typeof(LevelUpPage), new PropertyMetadata("string.Empty"));


        public LevelUpPage()
        {
            InitializeComponent();
        }

        private async Task AnimateText()
        {
            await Task.Delay(900);

            double animationDistance = NewLevelTextBlock.ActualHeight + NewLevelTextBlock.Margin.Top + NewLevelTextBlock.Margin.Bottom;

            Duration duration = TimeSpan.FromMilliseconds(500);

            DoubleAnimation lowerAnimation = new DoubleAnimation
            {
                From = 0,
                To = -animationDistance,
                Duration = duration,
                EasingFunction = new CubicEase
                {
                    EasingMode = EasingMode.EaseInOut
                }
            };

            DoubleAnimation upperAnimation = new DoubleAnimation
            {
                From = 0,
                To = -animationDistance,
                Duration = duration,
                EasingFunction = new CubicEase
                {
                    EasingMode = EasingMode.EaseInOut
                }
            };

            LowerTransform.BeginAnimation(TranslateTransform.YProperty, lowerAnimation);
            UpperTransform.BeginAnimation(TranslateTransform.YProperty, upperAnimation);
        }

        private async void HandleVisibilityChanged(object sender, DependencyPropertyChangedEventArgs e)
        {
            if (Visibility != Visibility.Visible)
                return;

            await AnimateText();
        }

        private void Continue_Click(object sender, RoutedEventArgs e)
        {
            Close();
        }
    }
}