支持字幕下载（不包括 AI 字幕）

src/Desktop/BiliCopilot.UI/Controls/Player/DownloadButton.xaml

@@ -19,6 +19,7 @@
  <DropDownButton
  x:Name="Btn"
  HorizontalAlignment="Stretch"
+ Click="OnBtnClick"
  Style="{StaticResource AccentDropDownButtonStyle}">
  <StackPanel>
  <TextBlock Text="{ext:Locale Name=DownloadVideo}" />

src/Desktop/BiliCopilot.UI/Controls/Player/DownloadButton.xaml.cs

@@ -30,7 +30,6 @@ protected override void OnControlLoaded()
 
  _viewModel = ViewModel;
  ViewModel.MetaInitialized += OnMetaInitialized;
- InitializeDownloadFlyout();
  }
 
  /// <inheritdoc/>
@@ -59,11 +58,11 @@ private void OnViewModelPropertyChanged(DependencyObject sender, DependencyPrope
 
  _viewModel = ViewModel;
  _viewModel.MetaInitialized += OnMetaInitialized;
- InitializeDownloadFlyout();
+ DownloadFlyout.Items.Clear();
  }
 
  private void OnMetaInitialized(object? sender, EventArgs e)
- => InitializeDownloadFlyout();
+ => DownloadFlyout.Items.Clear();
 
  private void InitializeDownloadFlyout()
  {
@@ -72,7 +71,6 @@ private void InitializeDownloadFlyout()
  return;
  }
 
- DownloadFlyout.Items.Clear();
  var formatHeader = MenuFlyoutItemHeader.LoadContent() as MenuFlyoutSeparator;
  formatHeader.Tag = ResourceToolkit.GetLocalizedString(Models.Constants.StringNames.Quality);
  DownloadFlyout.Items.Add(formatHeader);
@@ -129,6 +127,18 @@ private void InitializeDownloadFlyout()
 
  DownloadFlyout.Items.Add(downloadCoverItem);
  DownloadFlyout.Items.Add(downloadDanmakuItem);
+
+ if (ViewModel.HasAvailableSubtitle)
+ {
+ var downloadSubtitleItem = new MenuFlyoutItem
+ {
+ MinWidth = this.ActualWidth,
+ Text = ResourceToolkit.GetLocalizedString(Models.Constants.StringNames.DownloadSubtitle),
+ Command = ViewModel.DownloadSubtitleCommand,
+ };
+
+ DownloadFlyout.Items.Add(downloadSubtitleItem);
+ }
  }
 
  private void ShowPartsSelectionTip()
@@ -149,6 +159,14 @@ private void OnSelectionSubmitted(AutoSuggestBox sender, AutoSuggestBoxQuerySubm
  SelectionBox.Text = string.Empty;
  ViewModel.BatchDownloadSelectedPartsCommand.Execute(text);
  }
+
+ private void OnBtnClick(object sender, RoutedEventArgs e)
+ {
+ if (DownloadFlyout.Items.Count == 0)
+ {
+ InitializeDownloadFlyout();
+ }
+ }
 }
 
 /// <summary>

src/Desktop/BiliCopilot.UI/Controls/Settings/PlayerControlSettingControl.xaml

@@ -53,7 +53,7 @@
  MinWidth="120"
  LargeChange="50"
  Maximum="300"
- Minimum="0"
+ Minimum="3"
  SmallChange="10"
  SpinButtonPlacementMode="Compact"
  Value="{x:Bind ViewModel.SingleFastForwardAndRewindSpan, Mode=TwoWay}" />

src/Desktop/BiliCopilot.UI/Resources/zh-Hans-CN/Resources.resw

@@ -2663,4 +2663,7 @@
  <data name="OpenUpdate" xml:space="preserve">
  <value>查看更新</value>
  </data>
+ <data name="DownloadSubtitle" xml:space="preserve">
+ <value>下载字幕</value>
+ </data>
 </root>

src/Desktop/BiliCopilot.UI/ViewModels/Core/DownloadViewModel/DownloadViewModel.Properties.cs

@@ -33,6 +33,9 @@ public sealed partial class DownloadViewModel
  [ObservableProperty]
  private IReadOnlyCollection<EpisodeInformation>? _episodes;
 
+ [ObservableProperty]
+ private bool _hasAvailableSubtitle;
+
  /// <summary>
  /// 元数据初始化完成事件.
  /// </summary>

src/Desktop/BiliCopilot.UI/ViewModels/Core/DownloadViewModel/DownloadViewModel.cs

@@ -123,6 +123,13 @@ private void DownloadDanmaku()
  LaunchDownloadProcess(command);
  }
 
+ [RelayCommand]
+ private void DownloadSubtitle()
+ {
+ var command = $"{GetBasicCommand(false)} --sub-only \"{_currentUrl}\"";
+ LaunchDownloadProcess(command);
+ }
+
  [RelayCommand]
  private void BatchDownloadAllParts()
  {

src/Desktop/BiliCopilot.UI/ViewModels/Core/SubtitleViewModel.cs

@@ -22,6 +22,7 @@ public sealed partial class SubtitleViewModel : ViewModelBase
  private string _cid;
  private int _position;
  private IReadOnlyCollection<SubtitleInformation> _subtitles;
+ private Action? _initializedAction;
 
  [ObservableProperty]
  private bool _isAvailable;
@@ -60,6 +61,12 @@ public void ResetData(string aid, string cid)
  IsEnabled = SettingsToolkit.ReadLocalSetting(Models.Constants.SettingNames.IsSubtitleEnabled, true);
  }
 
+ /// <summary>
+ /// 设置初始化回调.
+ /// </summary>
+ public void SetInitializedCallback(Action action)
+ => _initializedAction = action;
+
  /// <summary>
  /// 更新当前播放位置.
  /// </summary>
@@ -113,6 +120,8 @@ private async Task InitializeAsync()
  {
  ChangeSubtitleCommand.Execute(firstMeta);
  }
+
+ _initializedAction?.Invoke();
  }
  catch (Exception ex)
  {

src/Desktop/BiliCopilot.UI/ViewModels/View/VideoPlayerPageViewModel/VideoPlayerPageViewModel.Methods.cs

@@ -298,4 +298,7 @@ private void ReloadPart()
 
  InitializeDashMediaCommand.Execute(_part);
  }
+
+ private void SyncDownloadAndSubtitle()
+ => Downloader.HasAvailableSubtitle = Subtitle.IsAvailable && Subtitle.Metas.Any(p => !p.IsAI);
 }

src/Desktop/BiliCopilot.UI/ViewModels/View/VideoPlayerPageViewModel/VideoPlayerPageViewModel.cs

@@ -44,6 +44,7 @@ public VideoPlayerPageViewModel(
  Subtitle = subtitle;
  Downloader = download;
  AI = ai;
+ Subtitle.SetInitializedCallback(SyncDownloadAndSubtitle);
  Player.SetProgressAction(PlayerProgressChanged);
  Player.SetStateAction(PlayerStateChanged);
  Player.SetEndAction(PlayerMediaEnded);