mirror of
https://github.com/wwiinnddyy/LanMountainDesktop.git
synced 2026-06-22 17:24:27 +08:00
0.4.8
百度热搜组件、凤凰新闻组件。
This commit is contained in:
lincube
647
LanMountainDesktop/Views/Components/IfengNewsWidget.axaml.cs
Normal file
647
LanMountainDesktop/Views/Components/IfengNewsWidget.axaml.cs
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@@ -0,0 +1,647 @@
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.IO;
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using System.Linq;
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using System.Net.Http;
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using System.Text.RegularExpressions;
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using System.Threading;
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using System.Threading.Tasks;
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using Avalonia;
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using Avalonia.Controls;
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using Avalonia.Input;
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using Avalonia.Interactivity;
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using Avalonia.Media;
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using Avalonia.Media.Imaging;
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using Avalonia.Threading;
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using LanMountainDesktop.Models;
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using LanMountainDesktop.Services;
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namespace LanMountainDesktop.Views.Components;
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public partial class IfengNewsWidget : UserControl, IDesktopComponentWidget, IRecommendationInfoAwareComponentWidget
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{
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private static readonly Regex MultiWhitespaceRegex = new(@"\s+", RegexOptions.Compiled);
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private static readonly FontFamily MiSansFontFamily = new("MiSans VF, avares://LanMountainDesktop/Assets/Fonts#MiSans");
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private static readonly IRecommendationInfoService DefaultRecommendationService = new RecommendationDataService();
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private static readonly HttpClient ImageHttpClient = new()
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{
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Timeout = TimeSpan.FromSeconds(8)
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};
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private const string BrowserUserAgent =
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"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0 Safari/537.36";
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private const double BaseCellSize = 48d;
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private const int BaseWidthCells = 4;
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private const int BaseHeightCells = 4;
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private const int MaxDisplayItemCount = 4;
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private static readonly IReadOnlyList<int> SupportedAutoRefreshIntervalsMinutes = RefreshIntervalCatalog.SupportedIntervalsMinutes;
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private readonly DispatcherTimer _refreshTimer = new()
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{
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Interval = TimeSpan.FromMinutes(20)
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};
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private readonly AppSettingsService _appSettingsService = new();
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private readonly ComponentSettingsService _componentSettingsService = new();
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private readonly LocalizationService _localizationService = new();
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private readonly List<DailyNewsItemSnapshot> _activeItems = [];
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private readonly List<NewsItemVisual> _itemVisuals = [];
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private readonly Bitmap?[] _newsBitmaps = new Bitmap?[MaxDisplayItemCount];
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private IRecommendationInfoService _recommendationService = DefaultRecommendationService;
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private CancellationTokenSource? _refreshCts;
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private string _languageCode = "zh-CN";
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private string _channelType = IfengNewsChannelTypes.Comprehensive;
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private double _currentCellSize = BaseCellSize;
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private bool _isAttached;
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private bool _isRefreshing;
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private bool _autoRefreshEnabled = true;
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private sealed record NewsItemVisual(
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Border Host,
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Grid RowGrid,
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TextBlock TitleTextBlock,
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Border ImageHost,
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Image ImageControl);
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public IfengNewsWidget()
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{
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InitializeComponent();
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BrandTextBlock.FontFamily = MiSansFontFamily;
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NewsItem1TextBlock.FontFamily = MiSansFontFamily;
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NewsItem2TextBlock.FontFamily = MiSansFontFamily;
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NewsItem3TextBlock.FontFamily = MiSansFontFamily;
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NewsItem4TextBlock.FontFamily = MiSansFontFamily;
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StatusTextBlock.FontFamily = MiSansFontFamily;
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_itemVisuals.Add(new NewsItemVisual(NewsItem1Host, NewsItem1Grid, NewsItem1TextBlock, NewsItem1ImageHost, NewsItem1Image));
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_itemVisuals.Add(new NewsItemVisual(NewsItem2Host, NewsItem2Grid, NewsItem2TextBlock, NewsItem2ImageHost, NewsItem2Image));
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_itemVisuals.Add(new NewsItemVisual(NewsItem3Host, NewsItem3Grid, NewsItem3TextBlock, NewsItem3ImageHost, NewsItem3Image));
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_itemVisuals.Add(new NewsItemVisual(NewsItem4Host, NewsItem4Grid, NewsItem4TextBlock, NewsItem4ImageHost, NewsItem4Image));
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_refreshTimer.Tick += OnRefreshTimerTick;
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AttachedToVisualTree += OnAttachedToVisualTree;
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DetachedFromVisualTree += OnDetachedFromVisualTree;
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SizeChanged += OnSizeChanged;
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ApplyCellSize(_currentCellSize);
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UpdateLanguageCode();
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ApplyAutoRefreshSettings();
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ApplyLoadingState();
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UpdateRefreshButtonState();
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}
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public void ApplyCellSize(double cellSize)
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{
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_currentCellSize = Math.Max(1, cellSize);
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UpdateAdaptiveLayout();
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}
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public void SetRecommendationInfoService(IRecommendationInfoService recommendationInfoService)
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{
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_recommendationService = recommendationInfoService ?? DefaultRecommendationService;
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if (_isAttached)
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{
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_ = RefreshNewsAsync(forceRefresh: false);
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}
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}
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public void RefreshFromSettings()
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{
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_recommendationService.ClearCache();
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ApplyAutoRefreshSettings();
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if (_isAttached)
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{
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_ = RefreshNewsAsync(forceRefresh: true);
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}
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}
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private void OnAttachedToVisualTree(object? sender, VisualTreeAttachmentEventArgs e)
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{
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_isAttached = true;
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ApplyAutoRefreshSettings();
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UpdateRefreshButtonState();
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_ = RefreshNewsAsync(forceRefresh: false);
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}
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private void OnDetachedFromVisualTree(object? sender, VisualTreeAttachmentEventArgs e)
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{
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_isAttached = false;
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_refreshTimer.Stop();
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CancelRefreshRequest();
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DisposeNewsBitmaps();
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UpdateRefreshButtonState();
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}
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private void OnSizeChanged(object? sender, SizeChangedEventArgs e)
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{
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ApplyCellSize(_currentCellSize);
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}
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private async void OnRefreshTimerTick(object? sender, EventArgs e)
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{
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await RefreshNewsAsync(forceRefresh: true);
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}
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private async void OnRefreshButtonClick(object? sender, RoutedEventArgs e)
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{
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_ = sender;
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await RefreshNewsAsync(forceRefresh: true);
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e.Handled = true;
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}
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private void OnNewsItemPointerPressed(object? sender, PointerPressedEventArgs e)
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{
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if (!e.GetCurrentPoint(this).Properties.IsLeftButtonPressed ||
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sender is not Border host ||
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host.Tag is null ||
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!int.TryParse(host.Tag.ToString(), out var index) ||
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index < 0 ||
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index >= _activeItems.Count)
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{
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return;
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}
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TryOpenUrl(_activeItems[index].Url);
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e.Handled = true;
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}
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private async Task RefreshNewsAsync(bool forceRefresh)
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{
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if (!_isAttached || _isRefreshing)
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{
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return;
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}
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_isRefreshing = true;
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UpdateLanguageCode();
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UpdateRefreshButtonState();
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var cts = new CancellationTokenSource();
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var previous = Interlocked.Exchange(ref _refreshCts, cts);
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previous?.Cancel();
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previous?.Dispose();
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try
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{
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var query = new IfengNewsQuery(
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Locale: _languageCode,
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ItemCount: MaxDisplayItemCount,
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ChannelType: _channelType,
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ForceRefresh: forceRefresh);
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var result = await _recommendationService.GetIfengNewsAsync(query, cts.Token);
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if (!_isAttached || cts.IsCancellationRequested)
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{
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return;
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}
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if (!result.Success || result.Data is null)
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{
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ApplyFailedState();
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return;
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}
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await ApplySnapshotAsync(result.Data, cts.Token);
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}
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catch (OperationCanceledException)
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{
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// Ignore canceled requests.
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}
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catch
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{
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if (_isAttached && !cts.IsCancellationRequested)
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{
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ApplyFailedState();
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}
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}
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finally
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{
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if (ReferenceEquals(_refreshCts, cts))
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{
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_refreshCts = null;
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}
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cts.Dispose();
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_isRefreshing = false;
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UpdateRefreshButtonState();
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}
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}
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private async Task ApplySnapshotAsync(DailyNewsSnapshot snapshot, CancellationToken cancellationToken)
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{
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BrandTextBlock.Text = L("ifeng.widget.brand", "凤凰网新闻");
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ToolTip.SetTip(RefreshButton, L("ifeng.widget.refresh_tooltip", "刷新"));
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_activeItems.Clear();
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foreach (var item in snapshot.Items)
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{
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if (string.IsNullOrWhiteSpace(item.Title) || string.IsNullOrWhiteSpace(item.Url))
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{
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continue;
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}
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_activeItems.Add(item);
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if (_activeItems.Count >= MaxDisplayItemCount)
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{
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break;
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}
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}
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var fallbackText = L("ifeng.widget.fallback_item", "暂无新闻");
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for (var i = 0; i < _itemVisuals.Count; i++)
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{
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var visual = _itemVisuals[i];
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visual.Host.IsVisible = true;
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visual.TitleTextBlock.Text = i < _activeItems.Count
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? NormalizeCompactText(_activeItems[i].Title)
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: fallbackText;
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SetNewsBitmap(i, null);
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}
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StatusTextBlock.IsVisible = false;
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UpdateInteractionState();
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UpdateAdaptiveLayout();
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var tasks = Enumerable.Range(0, MaxDisplayItemCount)
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.Select(index => TryDownloadBitmapAsync(
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index < _activeItems.Count ? _activeItems[index].ImageUrl : null,
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cancellationToken))
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.ToArray();
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var bitmaps = await Task.WhenAll(tasks);
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if (cancellationToken.IsCancellationRequested || !_isAttached)
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{
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foreach (var bitmap in bitmaps)
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{
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bitmap?.Dispose();
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}
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return;
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}
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for (var i = 0; i < bitmaps.Length; i++)
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{
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SetNewsBitmap(i, bitmaps[i]);
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}
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}
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private void ApplyLoadingState()
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{
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BrandTextBlock.Text = L("ifeng.widget.brand", "凤凰网新闻");
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ToolTip.SetTip(RefreshButton, L("ifeng.widget.refresh_tooltip", "刷新"));
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_activeItems.Clear();
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var loadingText = L("ifeng.widget.loading_item", "加载中...");
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for (var i = 0; i < _itemVisuals.Count; i++)
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{
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var visual = _itemVisuals[i];
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visual.Host.IsVisible = true;
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visual.TitleTextBlock.Text = loadingText;
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SetNewsBitmap(i, null);
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}
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StatusTextBlock.Text = L("ifeng.widget.loading", "加载中...");
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StatusTextBlock.IsVisible = true;
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UpdateInteractionState();
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UpdateAdaptiveLayout();
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}
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private void ApplyFailedState()
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{
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BrandTextBlock.Text = L("ifeng.widget.brand", "凤凰网新闻");
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ToolTip.SetTip(RefreshButton, L("ifeng.widget.refresh_tooltip", "刷新"));
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_activeItems.Clear();
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var fallbackText = L("ifeng.widget.fallback_item", "暂无新闻");
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for (var i = 0; i < _itemVisuals.Count; i++)
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{
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var visual = _itemVisuals[i];
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visual.Host.IsVisible = true;
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visual.TitleTextBlock.Text = fallbackText;
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SetNewsBitmap(i, null);
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}
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StatusTextBlock.Text = L("ifeng.widget.fetch_failed", "新闻获取失败");
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StatusTextBlock.IsVisible = true;
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UpdateInteractionState();
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UpdateAdaptiveLayout();
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}
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private void UpdateAdaptiveLayout()
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{
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var scale = ResolveScale();
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var softScale = Math.Clamp(scale, 0.80, 1.32);
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var totalWidth = Bounds.Width > 1 ? Bounds.Width : _currentCellSize * BaseWidthCells;
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var totalHeight = Bounds.Height > 1 ? Bounds.Height : _currentCellSize * BaseHeightCells;
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RootBorder.CornerRadius = new CornerRadius(Math.Clamp(32 * softScale, 16, 46));
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CardBorder.CornerRadius = new CornerRadius(Math.Clamp(32 * softScale, 16, 46));
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var horizontalPadding = Math.Clamp(14 * softScale, 8, 20);
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var verticalPadding = Math.Clamp(14 * softScale, 8, 20);
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CardBorder.Padding = new Thickness(horizontalPadding, verticalPadding, horizontalPadding, verticalPadding);
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var rowSpacing = Math.Clamp(8 * softScale, 4, 12);
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ContentGrid.RowSpacing = rowSpacing;
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HeaderGrid.ColumnSpacing = Math.Clamp(10 * softScale, 6, 16);
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var innerWidth = Math.Max(150, totalWidth - horizontalPadding * 2d);
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var innerHeight = Math.Max(160, totalHeight - verticalPadding * 2d);
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var availableRowsHeight = Math.Max(120, innerHeight - rowSpacing * 4d);
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var headerHeight = Math.Clamp(availableRowsHeight * 0.16, 24, 54);
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var itemHeight = Math.Max(32, (availableRowsHeight - headerHeight) / 4d);
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if (ContentGrid.RowDefinitions.Count >= 5)
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{
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ContentGrid.RowDefinitions[0].Height = new GridLength(headerHeight);
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for (var i = 1; i <= 4; i++)
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{
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ContentGrid.RowDefinitions[i].Height = new GridLength(itemHeight);
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}
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}
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BrandTextBlock.FontSize = Math.Clamp(headerHeight * 0.62, 14, 30);
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var refreshSize = Math.Clamp(headerHeight * 0.84, 22, 44);
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RefreshButton.Width = refreshSize;
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RefreshButton.Height = refreshSize;
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RefreshButton.CornerRadius = new CornerRadius(refreshSize / 2d);
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RefreshGlyphIcon.FontSize = Math.Clamp(refreshSize * 0.44, 10, 20);
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var imageWidth = Math.Clamp(innerWidth * 0.27, 82, 176);
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var imageHeight = Math.Clamp(imageWidth * 0.56, 46, 98);
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var columnGap = Math.Clamp(itemHeight * 0.20, 6, 14);
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var rowPadding = Math.Clamp(itemHeight * 0.08, 1, 5);
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var textWidth = Math.Max(84, innerWidth - imageWidth - columnGap);
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var titleFont = Math.Clamp(itemHeight * 0.32, 12, 24);
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foreach (var visual in _itemVisuals)
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{
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visual.Host.Padding = new Thickness(0, rowPadding, 0, rowPadding);
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visual.RowGrid.ColumnSpacing = columnGap;
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if (visual.RowGrid.ColumnDefinitions.Count > 1)
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{
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visual.RowGrid.ColumnDefinitions[1].Width = new GridLength(imageWidth);
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}
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visual.ImageHost.Width = imageWidth;
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visual.ImageHost.Height = imageHeight;
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visual.ImageHost.CornerRadius = new CornerRadius(Math.Clamp(imageHeight * 0.15, 8, 16));
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visual.TitleTextBlock.MaxWidth = textWidth;
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visual.TitleTextBlock.FontSize = titleFont;
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visual.TitleTextBlock.LineHeight = titleFont * 1.12;
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visual.TitleTextBlock.MinHeight = visual.TitleTextBlock.LineHeight * 2;
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visual.TitleTextBlock.MaxLines = 2;
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}
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StatusTextBlock.FontSize = Math.Clamp(titleFont, 10, 20);
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}
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private void UpdateInteractionState()
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{
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for (var i = 0; i < _itemVisuals.Count; i++)
|
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{
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var visual = _itemVisuals[i];
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var enabled = i < _activeItems.Count && !string.IsNullOrWhiteSpace(_activeItems[i].Url);
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visual.Host.IsHitTestVisible = enabled;
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visual.Host.Opacity = enabled ? 1.0 : 0.68;
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visual.Host.Cursor = enabled
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? new Cursor(StandardCursorType.Hand)
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: new Cursor(StandardCursorType.Arrow);
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}
|
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}
|
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|
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private void UpdateRefreshButtonState()
|
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{
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var enabled = _isAttached && !_isRefreshing;
|
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RefreshButton.IsEnabled = enabled;
|
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RefreshButton.Opacity = enabled ? 1.0 : 0.65;
|
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}
|
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|
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private void UpdateLanguageCode()
|
||||
{
|
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try
|
||||
{
|
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var snapshot = _appSettingsService.Load();
|
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_languageCode = _localizationService.NormalizeLanguageCode(snapshot.LanguageCode);
|
||||
}
|
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catch
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{
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_languageCode = "zh-CN";
|
||||
}
|
||||
}
|
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|
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private void ApplyAutoRefreshSettings()
|
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{
|
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var enabled = true;
|
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var intervalMinutes = 20;
|
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var channelType = IfengNewsChannelTypes.Comprehensive;
|
||||
|
||||
try
|
||||
{
|
||||
var snapshot = _componentSettingsService.Load();
|
||||
enabled = snapshot.IfengNewsAutoRefreshEnabled;
|
||||
intervalMinutes = NormalizeAutoRefreshIntervalMinutes(snapshot.IfengNewsAutoRefreshIntervalMinutes);
|
||||
channelType = IfengNewsChannelTypes.Normalize(snapshot.IfengNewsChannelType);
|
||||
}
|
||||
catch
|
||||
{
|
||||
// Keep fallback defaults.
|
||||
}
|
||||
|
||||
_autoRefreshEnabled = enabled;
|
||||
_channelType = channelType;
|
||||
_refreshTimer.Interval = TimeSpan.FromMinutes(intervalMinutes);
|
||||
|
||||
if (!_isAttached)
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
if (_autoRefreshEnabled)
|
||||
{
|
||||
if (!_refreshTimer.IsEnabled)
|
||||
{
|
||||
_refreshTimer.Start();
|
||||
}
|
||||
}
|
||||
else if (_refreshTimer.IsEnabled)
|
||||
{
|
||||
_refreshTimer.Stop();
|
||||
}
|
||||
}
|
||||
|
||||
private static int NormalizeAutoRefreshIntervalMinutes(int minutes)
|
||||
{
|
||||
if (minutes <= 0)
|
||||
{
|
||||
return 20;
|
||||
}
|
||||
|
||||
if (SupportedAutoRefreshIntervalsMinutes.Contains(minutes))
|
||||
{
|
||||
return minutes;
|
||||
}
|
||||
|
||||
return SupportedAutoRefreshIntervalsMinutes
|
||||
.OrderBy(value => Math.Abs(value - minutes))
|
||||
.FirstOrDefault(20);
|
||||
}
|
||||
|
||||
private static async Task<Bitmap?> TryDownloadBitmapAsync(string? imageUrl, CancellationToken cancellationToken)
|
||||
{
|
||||
var normalizedUrl = NormalizeHttpUrl(imageUrl);
|
||||
if (string.IsNullOrWhiteSpace(normalizedUrl))
|
||||
{
|
||||
return null;
|
||||
}
|
||||
|
||||
try
|
||||
{
|
||||
using var request = new HttpRequestMessage(HttpMethod.Get, normalizedUrl);
|
||||
request.Headers.TryAddWithoutValidation("User-Agent", BrowserUserAgent);
|
||||
request.Headers.TryAddWithoutValidation("Accept", "image/avif,image/webp,image/apng,image/*,*/*;q=0.8");
|
||||
using var response = await ImageHttpClient.SendAsync(
|
||||
request,
|
||||
HttpCompletionOption.ResponseHeadersRead,
|
||||
cancellationToken);
|
||||
if (!response.IsSuccessStatusCode)
|
||||
{
|
||||
return null;
|
||||
}
|
||||
|
||||
await using var stream = await response.Content.ReadAsStreamAsync(cancellationToken);
|
||||
var memory = new MemoryStream();
|
||||
await stream.CopyToAsync(memory, cancellationToken);
|
||||
memory.Position = 0;
|
||||
return new Bitmap(memory);
|
||||
}
|
||||
catch (OperationCanceledException)
|
||||
{
|
||||
throw;
|
||||
}
|
||||
catch
|
||||
{
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
private void TryOpenUrl(string? rawUrl)
|
||||
{
|
||||
var normalizedUrl = NormalizeHttpUrl(rawUrl);
|
||||
if (string.IsNullOrWhiteSpace(normalizedUrl))
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
try
|
||||
{
|
||||
var startInfo = new ProcessStartInfo
|
||||
{
|
||||
FileName = normalizedUrl,
|
||||
UseShellExecute = true
|
||||
};
|
||||
Process.Start(startInfo);
|
||||
}
|
||||
catch
|
||||
{
|
||||
// Ignore malformed URLs or shell launch failures.
|
||||
}
|
||||
}
|
||||
|
||||
private static string? NormalizeHttpUrl(string? rawUrl)
|
||||
{
|
||||
if (string.IsNullOrWhiteSpace(rawUrl))
|
||||
{
|
||||
return null;
|
||||
}
|
||||
|
||||
var candidate = rawUrl.Trim();
|
||||
if (!Uri.TryCreate(candidate, UriKind.Absolute, out var uri))
|
||||
{
|
||||
return null;
|
||||
}
|
||||
|
||||
if (!string.Equals(uri.Scheme, Uri.UriSchemeHttp, StringComparison.OrdinalIgnoreCase) &&
|
||||
!string.Equals(uri.Scheme, Uri.UriSchemeHttps, StringComparison.OrdinalIgnoreCase))
|
||||
{
|
||||
return null;
|
||||
}
|
||||
|
||||
return uri.ToString();
|
||||
}
|
||||
|
||||
private void SetNewsBitmap(int index, Bitmap? bitmap)
|
||||
{
|
||||
if (index < 0 || index >= _newsBitmaps.Length)
|
||||
{
|
||||
bitmap?.Dispose();
|
||||
return;
|
||||
}
|
||||
|
||||
var visual = _itemVisuals[index];
|
||||
var oldBitmap = _newsBitmaps[index];
|
||||
if (ReferenceEquals(visual.ImageControl.Source, oldBitmap))
|
||||
{
|
||||
visual.ImageControl.Source = null;
|
||||
}
|
||||
|
||||
oldBitmap?.Dispose();
|
||||
_newsBitmaps[index] = bitmap;
|
||||
visual.ImageControl.Source = bitmap;
|
||||
}
|
||||
|
||||
private void DisposeNewsBitmaps()
|
||||
{
|
||||
for (var i = 0; i < _newsBitmaps.Length; i++)
|
||||
{
|
||||
SetNewsBitmap(i, null);
|
||||
}
|
||||
}
|
||||
|
||||
private double ResolveScale()
|
||||
{
|
||||
var expectedWidth = _currentCellSize * BaseWidthCells;
|
||||
var expectedHeight = _currentCellSize * BaseHeightCells;
|
||||
if (expectedWidth <= 0 || expectedHeight <= 0)
|
||||
{
|
||||
return 1d;
|
||||
}
|
||||
|
||||
var actualWidth = Bounds.Width > 1 ? Bounds.Width : expectedWidth;
|
||||
var actualHeight = Bounds.Height > 1 ? Bounds.Height : expectedHeight;
|
||||
var scaleX = actualWidth / expectedWidth;
|
||||
var scaleY = actualHeight / expectedHeight;
|
||||
return Math.Clamp(Math.Min(scaleX, scaleY), 0.72, 2.4);
|
||||
}
|
||||
|
||||
private static string NormalizeCompactText(string? text)
|
||||
{
|
||||
if (string.IsNullOrWhiteSpace(text))
|
||||
{
|
||||
return string.Empty;
|
||||
}
|
||||
|
||||
return MultiWhitespaceRegex.Replace(text.Trim(), " ");
|
||||
}
|
||||
|
||||
private string L(string key, string fallback)
|
||||
{
|
||||
return _localizationService.GetString(_languageCode, key, fallback);
|
||||
}
|
||||
|
||||
private void CancelRefreshRequest()
|
||||
{
|
||||
var cts = Interlocked.Exchange(ref _refreshCts, null);
|
||||
if (cts is null)
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
cts.Cancel();
|
||||
cts.Dispose();
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user