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flipping card update

Eduardo Gomez Romero 1,315 Reputation points
2025-03-05T23:41:45.6166667+00:00

I create a live tile

using System.Diagnostics;

namespace LiveTileControl.Controls;

public partial class LiveTileControl : ContentView {

    private bool _isFlipping;

    public LiveTileControl() {
        InitializeComponent();
        UpdateTitlePosition();
        UpdateTileSize();

        // Initial states
        FrontView.IsVisible = true;
        FrontView.RotationY = 0;

        BackView.IsVisible = false;
        BackView.RotationY = 0;

    }

    #region title properties

    public static readonly BindableProperty TitleProperty = BindableProperty.Create(
        nameof(Title),
        typeof(string),
        typeof(LiveTileControl));

    public string Title {
        get => (string)GetValue(TitleProperty);
        set => SetValue(TitleProperty, value);
    }

    public static readonly BindableProperty TitleFontSizeProperty = BindableProperty.Create(
        nameof(TitleFontSize),
        typeof(int),
        typeof(LiveTileControl), 14);

    public int TitleFontSize {
        get => (int)GetValue(TitleFontSizeProperty);
        set => SetValue(TitleFontSizeProperty, value);
    }

    public static readonly BindableProperty TitleFontColorProperty = BindableProperty.Create(
        nameof(TitleFontColor),
        typeof(Color),
        typeof(LiveTileControl));

    public Color TitleFontColor {
        get => (Color)GetValue(TitleFontColorProperty);
        set => SetValue(TitleFontColorProperty, value);
    }

    public static readonly BindableProperty TitleFontFamilyProperty = BindableProperty.Create(
        nameof(TitleFontFamily),
        typeof(string),
        typeof(LiveTileControl),
        "Default");

    public string TitleFontFamily {
        get => (string)GetValue(TitleFontFamilyProperty);
        set => SetValue(TitleFontFamilyProperty, value);
    }

    public static readonly BindableProperty TitleFontAttributesProperty = BindableProperty.Create(
        nameof(TitleFontAttributes),
        typeof(FontAttributes),
        typeof(LiveTileControl));

    public FontAttributes TitleFontAttributes {
        get => (FontAttributes)GetValue(TitleFontAttributesProperty);
        set => SetValue(TitleFontAttributesProperty, value);
    }

    public static readonly BindableProperty TitlePositionProperty = BindableProperty.Create(
        nameof(TitlePosition),
        typeof(TitlePositions),
        typeof(LiveTileControl),
        TitlePositions.LowerLeft, propertyChanged: OnTitlePositionChanged);

    private static void OnTitlePositionChanged(BindableObject bindable, object oldValue, object newValue) {
        if(bindable is LiveTileControl control && newValue is TitlePositions) {
            control.UpdateTitlePosition();
        }
    }

    private void UpdateTitlePosition() {
        switch(TitlePosition) {
            case TitlePositions.UpperLeft:
                TitleLabel.HorizontalOptions = LayoutOptions.Start;
                TitleLabel.VerticalOptions = LayoutOptions.Start;
                break;
            case TitlePositions.UpperRight:
                TitleLabel.HorizontalOptions = LayoutOptions.End;
                TitleLabel.VerticalOptions = LayoutOptions.Start;
                break;
            case TitlePositions.LowerLeft:
                TitleLabel.HorizontalOptions = LayoutOptions.Start;
                TitleLabel.VerticalOptions = LayoutOptions.End;
                break;
            case TitlePositions.LowerRight:
                TitleLabel.HorizontalOptions = LayoutOptions.End;
                TitleLabel.VerticalOptions = LayoutOptions.End;
                break;
            case TitlePositions.Center:
                TitleLabel.HorizontalOptions = LayoutOptions.Center;
                TitleLabel.VerticalOptions = LayoutOptions.Center;
                break;
            default:
                Debug.WriteLine("Unknown TitlePosition");
                break;
        }
    }

    public TitlePositions TitlePosition {
        get => (TitlePositions)GetValue(TitlePositionProperty);
        set => SetValue(TitlePositionProperty, value);
    }

    public static readonly BindableProperty TitleMarginProperty = BindableProperty.Create(
        nameof(TitleMargin), typeof(Thickness),
        typeof(LiveTileControl),
        new Thickness(5, 0, 0, 5));

    public Thickness TitleMargin {
        get => (Thickness)GetValue(TitleMarginProperty);
        set => SetValue(TitleMarginProperty, value);
    }

    public enum TitlePositions {
        UpperLeft,
        UpperRight,
        LowerLeft,
        LowerRight,
        Center
    }

    #endregion

    #region contols properties

    public static readonly BindableProperty TileWidthProperty = BindableProperty.Create(
        nameof(TileWidth),
        typeof(int),
        typeof(LiveTileControl));

    public int TileWidth {
        get => (int)GetValue(TileWidthProperty);
        set => SetValue(TileWidthProperty, value);
    }

    public static readonly BindableProperty TileHeightProperty = BindableProperty.Create(
        nameof(TileHeight),
        typeof(int),
        typeof(LiveTileControl));

    public int TileHeight {
        get => (int)GetValue(TileHeightProperty);
        set => SetValue(TileHeightProperty, value);
    }

    public static readonly BindableProperty TileTransparencyProperty = BindableProperty.Create(
        nameof(TileTransparency),
        typeof(double),
        typeof(LiveTileControl),
        propertyChanged: OnTransparencyChanged);

    public double TileTransparency {
        get => (double)GetValue(TileTransparencyProperty);
        set => SetValue(TileTransparencyProperty, value);
    }

    public static readonly BindableProperty TileColorProperty = BindableProperty.Create(
        nameof(TileColor),
        typeof(Color),
        typeof(LiveTileControl));

    public Color TileColor {
        get => (Color)GetValue(TileColorProperty);
        set => SetValue(TileColorProperty, value);
    }

    public static readonly BindableProperty TileSizeProperty = BindableProperty.Create(
    nameof(TileSize),
    typeof(TileSizes),
    typeof(LiveTileControl),
    TileSizes.Medium, // Default to Medium
    propertyChanged: OnTileSizeChanged);

    public TileSizes TileSize {
        get => (TileSizes)GetValue(TileSizeProperty);
        set => SetValue(TileSizeProperty, value);
    }

    public static readonly BindableProperty DataMemberProperty = BindableProperty.Create(
    nameof(DataMember),
    typeof(string),
    typeof(LiveTileControl),
    "No Data",
    propertyChanged: OnDataMemberChanged);

    private static void OnDataMemberChanged(BindableObject bindable, object oldValue, object newValue) {
        if(bindable is LiveTileControl control) {
            Debug.WriteLine("Data changed to: " + newValue);
            control.FlipTile(); // Automatically flip the tile when DataMember changes
        }
    }

    public string DataMember {
        get => (string)GetValue(DataMemberProperty);
        set => SetValue(DataMemberProperty, value);
    }

    public static readonly BindableProperty FlipDurationProperty = BindableProperty.Create(
        nameof(FlipDuration),
        typeof(int),
        typeof(LiveTileControl),
        500);

    public int FlipDuration {
        get => (int)GetValue(FlipDurationProperty);
        set => SetValue(FlipDurationProperty, value);
    }


    private static void OnTileSizeChanged(BindableObject bindable, object oldValue, object newValue) {
        if(bindable is LiveTileControl control && newValue is TileSizes) {
            control.UpdateTileSize();
        }
    }

    private static void OnTransparencyChanged(BindableObject bindable, object oldValue, object newValue) {
        if(bindable is LiveTileControl control && newValue is double transparency) {
            control.UpdateBackgroundTransparency(transparency);
        }
    }

    private void UpdateBackgroundTransparency(double transparency) {
        float alpha = (float)Math.Clamp(transparency / 100.0, 0.0, 1.0);
        var baseColor = TileColor ?? Colors.Transparent;
        TileColor = baseColor.WithAlpha(alpha);
    }

    private void UpdateTileSize() {
        switch(TileSize) {
            case TileSizes.Small:
                TileWidth = 71;
                TileHeight = 71;
                IconFontSize = 38;
                TitleLabel.IsVisible = false;
                break;
            case TileSizes.Medium:
                TileWidth = 150;
                TileHeight = 150;
                IconFontSize = 72;
                TitleLabel.IsVisible = true;
                break;
            case TileSizes.Wide:
                TileWidth = 310;
                TileHeight = 150;
                IconFontSize = 110;
                TitleLabel.IsVisible = true;
                break;
            case TileSizes.Large:
                TileWidth = 310;
                TileHeight = 310;
                IconFontSize = 132;
                TitleLabel.IsVisible = true;
                break;
            default:
                Debug.WriteLine("Unknown TileSize");
                break;
        }
    }

    public enum TileSizes {
        Small,    // Corresponds to Small tile size
        Medium,   // Corresponds to Medium tile size
        Wide,     // Corresponds to Wide tile size
        Large     // Corresponds to Large tile size
    }

    #endregion

    #region Icon Properties

    public static readonly BindableProperty IconGlyphProperty = BindableProperty.Create(
        nameof(IconGlyph),
        typeof(string),
        typeof(LiveTileControl));

    public string IconGlyph {
        get => (string)GetValue(IconGlyphProperty);
        set => SetValue(IconGlyphProperty, value);
    }

    public static readonly BindableProperty IconFontFamilyProperty = BindableProperty.Create(
        nameof(IconFontFamily),
        typeof(string),
        typeof(LiveTileControl));

    public string IconFontFamily {
        get => (string)GetValue(IconFontFamilyProperty);
        set => SetValue(IconFontFamilyProperty, value);
    }

    public static readonly BindableProperty IconFontSizeProperty = BindableProperty.Create(
        nameof(IconFontSize),
        typeof(double),
        typeof(LiveTileControl),
        24.0); // Default size

    public double IconFontSize {
        get => (double)GetValue(IconFontSizeProperty);
        set => SetValue(IconFontSizeProperty, value);
    }

    public static readonly BindableProperty IconFontColorProperty = BindableProperty.Create(
        nameof(IconFontColor),
        typeof(Color),
        typeof(LiveTileControl),
        Colors.Black); // Default color

    public Color IconFontColor {
        get => (Color)GetValue(IconFontColorProperty);
        set => SetValue(IconFontColorProperty, value);
    }

    #endregion


    private void FlipTile() {
        var frontToBackAnimation = new Animation(
            (f) => FrontView.RotationY = f,
            0, 90, Easing.Linear);

        var backToFrontAnimation = new Animation(
            (f) => BackView.RotationY = f,
            -90, 0, Easing.Linear);

        frontToBackAnimation.Commit(
            this,
            "FrontToBack",
            16,
            (uint)(FlipDuration / 2),
            Easing.Linear,
            (finished, canceled) => {
                // Visibility toggle logic
                FrontView.IsVisible = false;
                BackView.IsVisible = true;
                BackView.RotationY = -90; // Ensure back view rotation starts correctly

                // Commit back-to-front animation
                backToFrontAnimation.Commit(
                    this, "BackToFront", 16, (uint)(FlipDuration / 2), Easing.Linear);
            });
    }

    public async Task UpdateTileSafely(string newData) {
        if(_isFlipping) {
            return;
        }

        _isFlipping = true; // Lock flipping
        DataMember = newData; // Update the content displayed on the back of the tile
        FlipTile(); // Trigger the flip animation
        await Task.Delay(FlipDuration); // Wait for the animation to complete
        _isFlipping = false; // Unlock flipping
    }
}


   <Grid
       BackgroundColor="{Binding TileColor}"
       BindingContext="{Binding Source={Reference Tile}}"
       HeightRequest="{Binding TileHeight}"
       WidthRequest="{Binding TileWidth}">
       <!--  Front View  -->
       <Grid
           x:Name="FrontView"
           IsVisible="True">
           <Label
               FontFamily="{Binding IconFontFamily}"
               FontSize="{Binding IconFontSize}"
               HorizontalOptions="Center"
               Text="{Binding IconGlyph}"
               TextColor="{Binding IconFontColor}"
               VerticalOptions="Center" />
           <Label
               x:Name="TitleLabel"
               Margin="{Binding TitleMargin}"
               FontAttributes="{Binding TitleFontAttributes}"
               FontFamily="{Binding TitleFontFamily}"
               FontSize="{Binding TitleFontSize}"
               HorizontalOptions="Start"
               Text="{Binding Title}"
               TextColor="{Binding TitleFontColor}"
               VerticalOptions="Start" />
       </Grid>
       <!--  Back View  -->
       <Grid
           x:Name="BackView"
           BackgroundColor="{Binding TileColor}"
           IsVisible="False">
           <Label
               FontAttributes="{Binding TitleFontAttributes}"
               FontSize="{Binding TitleFontSize}"
               HorizontalOptions="Center"
               Text="{Binding DataMember}"
               TextColor="{Binding TitleFontColor}"
               VerticalOptions="Center" />
       </Grid>
   </Grid>

created the xaml in mainpage

 <control:LiveTileControl
     Title="My live tile"
     DataMember="{Binding Data}"
     IconFontColor="White"
     IconFontFamily="FluentUI"
     IconGlyph="{Static font:FluentUI.people_12_regular}"
     TileColor="Green"
     TileSize="Large"
     TileTransparency="10"
     TitleFontSize="14"
     TitlePosition="LowerLeft" />

and the viewModel

    public partial class MainPageViewModel : ObservableObject {

        private readonly ApiService _apiService;

        [ObservableProperty]
        private string _data;

        public MainPageViewModel(ApiService apiService) {

            _apiService = apiService;
            _data = "No data yet....";

            InitializeAsync();
        }

        private async void InitializeAsync() {
            await StartFetchingData();
        }

        private async Task StartFetchingData() {

            var apiUrl = "https://jsonplaceholder.typicode.com/posts/1";

            while(true) {

                try {

                    var newData = await _apiService.FetchAndFormatData(apiUrl);
                    Debug.WriteLine($"Fetched new data: {newData}");
                    Data = newData; // This should trigger the tile flip

                } catch(Exception e) {

                    Debug.WriteLine(e.Message);
                }

                await Task.Delay(30000);

            }
        }
    }
}

the problem is that the live tile, has to flip to the front and back every 500 milliseconds and it doesn't flip, I want it to flip when I receive new data.

But because I am in testing phase I want to flip contently betwen the front and back

rigth now it stays on the backview

https://reccloud.com/u/0ydjbni

.NET MAUI
.NET MAUI
A Microsoft open-source framework for building native device applications spanning mobile, tablet, and desktop.
3,982 questions

1 answer

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  1. Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 35,996 Reputation points Microsoft External Staff
    2025-03-06T07:27:01.9966667+00:00

    Hello,

    Please modify the FlipTile method like the following:

    private void FlipTile()
{
     var frontToBackAnimation = new Animation(
         (f) => this.RotationY = f,
         0, 90, Easing.Linear);
 
     var backToFrontAnimation = new Animation(
         (f) => this.RotationY = f,
         -90, 0, Easing.Linear);
 
     frontToBackAnimation.Commit(
         this,
         "FrontToBack",
         16,
         (uint)(FlipDuration / 2),
         Easing.Linear,
         (finished, canceled) => {
             // Visibility toggle logic
             FrontView.IsVisible = !FrontView.IsVisible;
              BackView.IsVisible = !BackView.IsVisible;
             // this.RotationY = -90; // Ensure back view rotation starts correctly
 
            // Commit back-to - front animation
             backToFrontAnimation.Commit(
                        this, "BackToFront", 16, (uint)(FlipDuration / 2), Easing.Linear, (finished, canceled) =>
                        {
                            //If you remove the following, the card will go back next time
 
                            FrontView.IsVisible = !FrontView.IsVisible;
                           BackView.IsVisible = !BackView.IsVisible;
 
                        });
         });
}

    Update

    //MyLiveTitleControl is the name of the control

    //<control:LiveTileControl x:Name="MyLiveTitleControl"

    public partial class MainPage : ContentPage {
    IDispatcherTimer timer;
    public MainPage(MainPageViewModel mainPageViewModel) {
        InitializeComponent();
        BindingContext = mainPageViewModel;
        timer = Dispatcher.CreateTimer();
        timer.Interval = TimeSpan.FromSeconds(10);
        MainThread.BeginInvokeOnMainThread(() =>
        {
            timer.Tick += async (s, e) =>
            {
               await MyLiveTitleControl.UpdateTileSafely("test");
            };
        });
        timer.Start();
    }
 
}

    Best Regards,

    Wenyan Zhang

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