修复动画错误逻辑

UntamedMusicPlayer/Views/LyricPage.xaml.cs

@@ -1,8 +1,11 @@
 using System.ComponentModel;
+using System.Numerics;
 using Microsoft.UI.Dispatching;
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
+using Microsoft.UI.Xaml.Hosting;
 using Microsoft.UI.Xaml.Input;
+using Microsoft.UI.Xaml.Media.Imaging;
 using UntamedMusicPlayer.Controls;
 using UntamedMusicPlayer.Models;
 using UntamedMusicPlayer.Playback;
@@ -15,6 +18,8 @@ public sealed partial class LyricPage : Page, IDisposable
 {
     public LyricViewModel ViewModel { get; }
 
+    private bool isFirstLoad = true;
+
     private readonly Timer _autoScrollDelayTimer;
     private bool _isManualScrolling;
     private bool _isProgrammaticScroll;
@@ -27,13 +32,7 @@ public sealed partial class LyricPage : Page, IDisposable
     private DateTimeOffset _contentGridMarginAnimationStart;
     private double _contentGridMarginFrom;
     private double _contentGridMarginTo;
-
-    private DispatcherQueueTimer? _coverSizeAnimationTimer;
-    private DateTimeOffset _coverSizeAnimationStart;
-    private double _coverSizeFromWidth;
-    private double _coverSizeFromHeight;
-    private double _coverSizeToWidth;
-    private double _coverSizeToHeight;
+    private CancellationTokenSource? _coverLoadWaitCts;
 
     public LyricPage()
     {
@@ -57,13 +56,89 @@ public sealed partial class LyricPage : Page, IDisposable
         {
             if (ReferenceGrid.ActualWidth > 0 && ReferenceGrid.ActualHeight > 0)
             {
-                ChangeCoverSize(ReferenceGrid.ActualWidth, ReferenceGrid.ActualHeight);
+                RestartWaitForCoverAndRecalculate();
             }
             _isManualScrolling = false;
             _autoScrollDelayTimer.Change(Timeout.Infinite, Timeout.Infinite);
         }
     }
 
+    private void RestartWaitForCoverAndRecalculate()
+    {
+        _coverLoadWaitCts?.Cancel();
+        _coverLoadWaitCts?.Dispose();
+        _coverLoadWaitCts = new CancellationTokenSource();
+        _ = RecalculateCoverSizeWhenCoverReadyAsync(_coverLoadWaitCts.Token);
+    }
+
+    private async Task RecalculateCoverSizeWhenCoverReadyAsync(CancellationToken cancellationToken)
+    {
+        var cover = Data.PlayState.CurrentSong?.Cover;
+        if (cover is null)
+        {
+            return;
+        }
+
+        var loaded = await WaitCoverLoadedAsync(cover, cancellationToken);
+        if (!loaded || cancellationToken.IsCancellationRequested)
+        {
+            return;
+        }
+
+        if (ReferenceGrid.ActualWidth > 0 && ReferenceGrid.ActualHeight > 0)
+        {
+            ChangeCoverSize(ReferenceGrid.ActualWidth, ReferenceGrid.ActualHeight);
+        }
+    }
+
+    private static async Task<bool> WaitCoverLoadedAsync(
+        BitmapImage cover,
+        CancellationToken cancellationToken
+    )
+    {
+        if (cover.PixelWidth > 0 && cover.PixelHeight > 0)
+        {
+            return true;
+        }
+
+        var tcs = new TaskCompletionSource<bool>(
+            TaskCreationOptions.RunContinuationsAsynchronously
+        );
+
+        void OnImageOpened(object sender, RoutedEventArgs args) => tcs.TrySetResult(true);
+        void OnImageFailed(object sender, ExceptionRoutedEventArgs args) => tcs.TrySetResult(false);
+
+        cover.ImageOpened += OnImageOpened;
+        cover.ImageFailed += OnImageFailed;
+
+        using var cancellationRegistration = cancellationToken.Register(() =>
+            tcs.TrySetCanceled(cancellationToken)
+        );
+
+        try
+        {
+            if (cover.PixelWidth > 0 && cover.PixelHeight > 0)
+            {
+                return true;
+            }
+            var completedTask = await Task.WhenAny(tcs.Task, Task.Delay(1500, cancellationToken));
+            if (completedTask != tcs.Task)
+            {
+                return false;
+            }
+            return await tcs.Task;
+        }
+        catch (OperationCanceledException)
+        {
+            return false;
+        }
+        finally
+        {
+            cover.ImageOpened -= OnImageOpened;
+            cover.ImageFailed -= OnImageFailed;
+        }
+    }
+
     private void OnRootPlayBarChanged(object? sender, PropertyChangedEventArgs e)
     {
         if (
@@ -308,6 +383,14 @@ public sealed partial class LyricPage : Page, IDisposable
             return;
         }
 
+        if (isFirstLoad)
+        {
+            isFirstLoad = false;
+            CoverBorder.Width = targetWidth;
+            CoverBorder.Height = targetHeight;
+            return;
+        }
+
         if (
             Math.Abs(currentWidth - targetWidth) < 0.5
             && Math.Abs(currentHeight - targetHeight) < 0.5
@@ -318,40 +401,23 @@ public sealed partial class LyricPage : Page, IDisposable
             return;
         }
 
-        _coverSizeAnimationTimer ??= DispatcherQueue.CreateTimer();
-        _coverSizeAnimationTimer.Stop();
-        _coverSizeAnimationTimer.Interval = TimeSpan.FromMilliseconds(16);
-        _coverSizeAnimationTimer.Tick -= CoverSizeAnimationTick;
-        _coverSizeAnimationTimer.Tick += CoverSizeAnimationTick;
+        CoverBorder.Width = targetWidth;
+        CoverBorder.Height = targetHeight;
 
-        _coverSizeFromWidth = currentWidth;
-        _coverSizeFromHeight = currentHeight;
-        _coverSizeToWidth = targetWidth;
-        _coverSizeToHeight = targetHeight;
-        _coverSizeAnimationStart = DateTimeOffset.Now;
+        var visual = ElementCompositionPreview.GetElementVisual(CoverBorder);
+        visual.StopAnimation("Scale");
+        visual.CenterPoint = new Vector3((float)(targetWidth / 2), (float)(targetHeight / 2), 0f);
 
-        _coverSizeAnimationTimer.Start();
-    }
+        var initialScaleX = (float)(currentWidth / targetWidth);
+        var initialScaleY = (float)(currentHeight / targetHeight);
+        visual.Scale = new Vector3(initialScaleX, initialScaleY, 1f);
 
-    private void CoverSizeAnimationTick(DispatcherQueueTimer sender, object args)
-    {
-        const double durationMs = 450;
-        var elapsedMs = (DateTimeOffset.Now - _coverSizeAnimationStart).TotalMilliseconds;
-        var progress = Math.Clamp(elapsedMs / durationMs, 0d, 1d);
-        var easedProgress = 1 - Math.Pow(1 - progress, 3);
+        var compositor = visual.Compositor;
+        var scaleAnimation = compositor.CreateVector3KeyFrameAnimation();
+        scaleAnimation.InsertKeyFrame(1f, Vector3.One);
+        scaleAnimation.Duration = TimeSpan.FromMilliseconds(450);
 
-        CoverBorder.Width =
-            _coverSizeFromWidth + ((_coverSizeToWidth - _coverSizeFromWidth) * easedProgress);
-        CoverBorder.Height =
-            _coverSizeFromHeight + ((_coverSizeToHeight - _coverSizeFromHeight) * easedProgress);
-
-        if (progress >= 1)
-        {
-            sender.Stop();
-            sender.Tick -= CoverSizeAnimationTick;
-            CoverBorder.Width = _coverSizeToWidth;
-            CoverBorder.Height = _coverSizeToHeight;
-        }
+        visual.StartAnimation("Scale", scaleAnimation);
     }
 
     private void TextBlock_SizeChanged(object sender, SizeChangedEventArgs e)
@@ -431,12 +497,12 @@ public sealed partial class LyricPage : Page, IDisposable
     {
         _autoScrollDelayTimer.Dispose();
         _titleBarHideTimer?.Dispose();
+        _coverLoadWaitCts?.Cancel();
+        _coverLoadWaitCts?.Dispose();
+        _coverLoadWaitCts = null;
         _contentGridMarginAnimationTimer?.Stop();
         _contentGridMarginAnimationTimer?.Tick -= ContentGridMarginAnimationTick;
         _contentGridMarginAnimationTimer = null;
-        _coverSizeAnimationTimer?.Stop();
-        _coverSizeAnimationTimer?.Tick -= CoverSizeAnimationTick;
-        _coverSizeAnimationTimer = null;
         Data.PlayState.PropertyChanged -= OnStateChanged;
         Data.RootPlayBarViewModel?.PropertyChanged -= OnRootPlayBarChanged;
         Data.LyricPage = null;

UntamedMusicPlayer/Views/RootPlayBarView.xaml

@@ -7,7 +7,6 @@
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
              xmlns:model="using:UntamedMusicPlayer.Models"
              xmlns:ui="using:CommunityToolkit.WinUI"
-             Unloaded="RootPlayBarView_Unloaded"
              mc:Ignorable="d">
 
     <Grid KeyTipPlacementMode="Top">
@@ -215,41 +214,22 @@
                 </Border>
                 <StackPanel Orientation="Horizontal">
                     <TextBlock Width="6" Visibility="{x:Bind GetNotDetailedVisibility(ViewModel.IsDetail), Mode=OneWay}"/>
-                    <Grid x:Name="SongInfoTransitionHost"
-                          Margin="0,0,4,0" HorizontalAlignment="Left"
-                          VerticalAlignment="Center">
-                        <StackPanel x:Name="CurrentSongInfoPanel">
-                            <StackPanel.RenderTransform>
-                                <CompositeTransform x:Name="CurrentSongInfoTransform"/>
-                            </StackPanel.RenderTransform>
-                            <TextBlock x:Name="SongTitleTextBlock"
-                                       Margin="10,0,0,4"
-                                       FontSize="20" FontWeight="Medium"
-                                       TextTrimming="CharacterEllipsis"
-                                       TextWrapping="NoWrap"/>
-                            <TextBlock x:Name="ArtistAndAlbumTextBlock"
-                                       Margin="10,0,0,0"
-                                       Foreground="{ThemeResource TextFillColorSecondaryBrush}"
-                                       TextTrimming="CharacterEllipsis"
-                                       TextWrapping="NoWrap"/>
-                        </StackPanel>
-                        <StackPanel x:Name="IncomingSongInfoPanel"
-                                    Opacity="0" Visibility="Collapsed">
-                            <StackPanel.RenderTransform>
-                                <CompositeTransform x:Name="IncomingSongInfoTransform" TranslateY="16"/>
-                            </StackPanel.RenderTransform>
-                            <TextBlock x:Name="IncomingSongTitleTextBlock"
-                                       Margin="10,0,0,4"
-                                       FontSize="20" FontWeight="Medium"
-                                       TextTrimming="CharacterEllipsis"
-                                       TextWrapping="NoWrap"/>
-                            <TextBlock x:Name="IncomingArtistAndAlbumTextBlock"
-                                       Margin="10,0,0,0"
-                                       Foreground="{ThemeResource TextFillColorSecondaryBrush}"
-                                       TextTrimming="CharacterEllipsis"
-                                       TextWrapping="NoWrap"/>
-                        </StackPanel>
-                    </Grid>
+                    <StackPanel Margin="0,0,4,0" HorizontalAlignment="Left"
+                                VerticalAlignment="Center">
+                        <TextBlock x:Name="SongTitleTextBlock"
+                                   Margin="10,0,0,4"
+                                   FontSize="20" FontWeight="Medium"
+                                   Text="{x:Bind model:Data.PlayState.CurrentSong.Title, Mode=OneWay}"
+                                   TextTrimming="CharacterEllipsis"
+                                   TextWrapping="NoWrap"/>
+                        <TextBlock x:Name="ArtistAndAlbumTextBlock"
+                                   Margin="10,0,0,0"
+                                   Foreground="{ThemeResource TextFillColorSecondaryBrush}"
+                                   Text="{x:Bind model:Data.PlayState.CurrentSong.ArtistAndAlbumStr, Mode=OneWay}"
+                                   TextTrimming="CharacterEllipsis"
+                                   TextWrapping="NoWrap"
+                                   Visibility="{x:Bind GetArtistAndAlbumStrVisibility(model:Data.PlayState.CurrentSong), Mode=OneWay}"/>
+                    </StackPanel>
                     <TextBlock Width="8" Visibility="{x:Bind ViewModel.IsDetail, Mode=OneWay}"/>
                 </StackPanel>
             </StackPanel>

UntamedMusicPlayer/Views/RootPlayBarView.xaml.cs

@@ -1,9 +1,6 @@
-using System.ComponentModel;
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
 using Microsoft.UI.Xaml.Input;
-using Microsoft.UI.Xaml.Media;
-using Microsoft.UI.Xaml.Media.Animation;
 using UntamedMusicPlayer.Contracts.Models;
 using UntamedMusicPlayer.Controls;
 using UntamedMusicPlayer.Helpers;
@@ -18,7 +15,6 @@ namespace UntamedMusicPlayer.Views;
 public sealed partial class RootPlayBarView : UserControl
 {
     private bool _hasPointerPressed = false;
-    private Storyboard? _songInfoTransitionStoryboard;
 
     public RootPlayBarViewModel ViewModel { get; }
 
@@ -28,119 +24,6 @@ public sealed partial class RootPlayBarView : UserControl
         InitializeComponent();
         ViewModel = App.GetService<RootPlayBarViewModel>();
         Data.RootPlayBarView = this;
-
-        Data.PlayState.PropertyChanged += OnStateChanged;
-        UpdateSongInfoWithoutAnimation();
-    }
-
-    private void OnStateChanged(object? sender, PropertyChangedEventArgs e)
-    {
-        if (e.PropertyName is nameof(SharedPlaybackState.CurrentSong))
-        {
-            AnimateSongInfoToCurrentSong();
-        }
-    }
-
-    private void UpdateSongInfoWithoutAnimation()
-    {
-        var title = Data.PlayState.CurrentSong?.Title ?? "";
-        var artistAndAlbum = Data.PlayState.CurrentSong?.ArtistAndAlbumStr ?? "";
-
-        SongTitleTextBlock.Text = title;
-        ArtistAndAlbumTextBlock.Text = artistAndAlbum;
-        ArtistAndAlbumTextBlock.Visibility = string.IsNullOrWhiteSpace(artistAndAlbum)
-            ? Visibility.Collapsed
-            : Visibility.Visible;
-
-        CurrentSongInfoPanel.Opacity = 1;
-        IncomingSongInfoPanel.Visibility = Visibility.Collapsed;
-        IncomingSongInfoPanel.Opacity = 0;
-    }
-
-    private void AnimateSongInfoToCurrentSong()
-    {
-        var title = Data.PlayState.CurrentSong?.Title ?? "";
-        var artistAndAlbum = Data.PlayState.CurrentSong?.ArtistAndAlbumStr ?? "";
-        if (SongTitleTextBlock.Text == title && ArtistAndAlbumTextBlock.Text == artistAndAlbum)
-        {
-            return;
-        }
-
-        StopSongInfoTransition();
-
-        IncomingSongTitleTextBlock.Text = title;
-        IncomingArtistAndAlbumTextBlock.Text = artistAndAlbum;
-        IncomingArtistAndAlbumTextBlock.Visibility = string.IsNullOrWhiteSpace(artistAndAlbum)
-            ? Visibility.Collapsed
-            : Visibility.Visible;
-
-        IncomingSongInfoPanel.Visibility = Visibility.Visible;
-
-        var currentFadeOut = new DoubleAnimation
-        {
-            From = 1,
-            To = 0,
-            Duration = TimeSpan.FromMilliseconds(200),
-        };
-        Storyboard.SetTarget(currentFadeOut, CurrentSongInfoPanel);
-        Storyboard.SetTargetProperty(currentFadeOut, nameof(Opacity));
-
-        var currentSlideUp = new DoubleAnimation
-        {
-            From = 0,
-            To = -70,
-            Duration = TimeSpan.FromMilliseconds(220),
-            EasingFunction = new CubicEase { EasingMode = EasingMode.EaseIn },
-        };
-        Storyboard.SetTarget(currentSlideUp, CurrentSongInfoTransform);
-        Storyboard.SetTargetProperty(currentSlideUp, nameof(CompositeTransform.TranslateY));
-
-        var incomingFadeIn = new DoubleAnimation
-        {
-            From = 0,
-            To = 1,
-            Duration = TimeSpan.FromMilliseconds(400),
-        };
-        Storyboard.SetTarget(incomingFadeIn, IncomingSongInfoPanel);
-        Storyboard.SetTargetProperty(incomingFadeIn, nameof(Opacity));
-
-        var incomingSlideIn = new DoubleAnimation
-        {
-            From = 70,
-            To = 0,
-            Duration = TimeSpan.FromMilliseconds(450),
-            EasingFunction = new CubicEase { EasingMode = EasingMode.EaseOut },
-        };
-        Storyboard.SetTarget(incomingSlideIn, IncomingSongInfoTransform);
-        Storyboard.SetTargetProperty(incomingSlideIn, nameof(CompositeTransform.TranslateY));
-
-        _songInfoTransitionStoryboard = new Storyboard();
-        _songInfoTransitionStoryboard.Children.Add(currentFadeOut);
-        _songInfoTransitionStoryboard.Children.Add(currentSlideUp);
-        _songInfoTransitionStoryboard.Children.Add(incomingFadeIn);
-        _songInfoTransitionStoryboard.Children.Add(incomingSlideIn);
-        _songInfoTransitionStoryboard.Completed += SongInfoTransitionStoryboard_Completed;
-        _songInfoTransitionStoryboard.Begin();
-    }
-
-    private void SongInfoTransitionStoryboard_Completed(object? sender, object e)
-    {
-        ArtistAndAlbumTextBlock.Visibility = IncomingArtistAndAlbumTextBlock.Visibility;
-        IncomingSongInfoPanel.Visibility = Visibility.Collapsed;
-        StopSongInfoTransition();
-    }
-
-    private void StopSongInfoTransition()
-    {
-        SongTitleTextBlock.Text = IncomingSongTitleTextBlock.Text;
-        ArtistAndAlbumTextBlock.Text = IncomingArtistAndAlbumTextBlock.Text;
-        if (_songInfoTransitionStoryboard is null)
-        {
-            return;
-        }
-        _songInfoTransitionStoryboard.Completed -= SongInfoTransitionStoryboard_Completed;
-        _songInfoTransitionStoryboard.Stop();
-        _songInfoTransitionStoryboard = null;
     }
 
     public string GetCurrent(TimeSpan current) =>
@@ -390,10 +273,4 @@ public sealed partial class RootPlayBarView : UserControl
         var dialog = new PropertiesDialog(currentSong!) { XamlRoot = XamlRoot };
         await dialog.ShowAsync();
     }
-
-    private void RootPlayBarView_Unloaded(object sender, RoutedEventArgs e)
-    {
-        Data.PlayState.PropertyChanged -= OnStateChanged;
-        StopSongInfoTransition();
-    }
 }