530 lines
18 KiB
C#
530 lines
18 KiB
C#
using System.Collections;
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using System.ComponentModel;
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using System.Diagnostics;
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using System.IO;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Input;
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using System.Windows.Media;
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using ytLive.Helpers;
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using ytLive.Models;
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using ytLive.ViewModels;
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namespace ytLive;
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public partial class MainWindow : Window
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{
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private readonly MainViewModel _viewModel;
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public MainWindow()
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{
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AppLog.Write("MainWindow ctor: before InitializeComponent");
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InitializeComponent();
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AppLog.Write("MainWindow ctor: after InitializeComponent");
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_viewModel = (MainViewModel)DataContext;
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_viewModel.PropertyChanged += OnViewModelPropertyChanged;
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// When a focused scene is deleted, never land focus on a hidden scene.
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SceneList.IsSelectable = item => item is Scene { IsHidden: false };
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UpdateTaskbarOverlay();
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UpdateSelectionOverlay();
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AppLog.Write("MainWindow ctor: end");
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}
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private void MainWindow_Loaded(object sender, RoutedEventArgs e)
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{
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AppLog.Write("MainWindow loaded");
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}
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private void OnViewModelPropertyChanged(object? sender, PropertyChangedEventArgs e)
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{
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if (e.PropertyName == nameof(MainViewModel.IsLive))
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UpdateTaskbarOverlay();
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else if (e.PropertyName == nameof(MainViewModel.SelectedElement))
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UpdateSelectionOverlay();
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}
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private void MainWindow_Closing(object? sender, CancelEventArgs e)
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{
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_viewModel.Shutdown();
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}
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private void MainWindow_Activated(object? sender, EventArgs e)
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{
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_viewModel.RefreshBackdropAutoCapture();
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}
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private void MainWindow_Deactivated(object? sender, EventArgs e)
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{
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_viewModel.NoteBackgroundWindow();
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}
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private void UpdateTaskbarOverlay()
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{
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TaskbarInfo.Overlay = _viewModel.IsLive
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? (ImageSource)FindResource("LiveOverlay")
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: null;
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}
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private void SceneNameBox_IsVisibleChanged(object sender, DependencyPropertyChangedEventArgs e)
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{
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if (sender is TextBox { IsVisible: true } box)
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{
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box.Focus();
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box.SelectAll();
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}
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}
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private void SceneList_SelectionChanged(object sender, SelectionChangedEventArgs e)
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{
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if (e.AddedItems.Count > 0 && e.AddedItems[0] is Scene { IsHidden: true } hidden)
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{
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var list = (ListBox)sender;
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list.SelectedItem = _viewModel.ActiveScene;
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}
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}
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private void MicLabel_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
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{
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if (sender is FrameworkElement { DataContext: MainViewModel vm })
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vm.OpenMicPickerCommand.Execute(null);
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}
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private void VolumeSlider_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
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{
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if (sender is FrameworkElement { DataContext: MainViewModel vm })
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vm.SetVolumeAdjusting(true);
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}
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private void VolumeSlider_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
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{
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if (sender is FrameworkElement { DataContext: MainViewModel vm })
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vm.SetVolumeAdjusting(false);
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}
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private void VolumeSlider_LostMouseCapture(object sender, MouseEventArgs e)
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{
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if (sender is FrameworkElement { DataContext: MainViewModel vm })
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vm.SetVolumeAdjusting(false);
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}
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private void MicSpeaker_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
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{
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if (sender is FrameworkElement { DataContext: MainViewModel vm })
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{
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vm.ToggleMicMuteCommand.Execute(null);
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}
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}
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private void GearButton_Click(object sender, RoutedEventArgs e)
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{
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if (sender is Button { ContextMenu: { } menu } button)
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{
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menu.PlacementTarget = button;
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menu.Placement = System.Windows.Controls.Primitives.PlacementMode.Bottom;
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menu.IsOpen = true;
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}
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}
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private void AboutButton_Click(object sender, RoutedEventArgs e)
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{
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// LGPL/BSD/MIT notices ship next to the exe; open in the OS text viewer.
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var path = Path.Combine(AppContext.BaseDirectory, "THIRD-PARTY-NOTICES.txt");
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if (!File.Exists(path)) return;
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try
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{
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Process.Start(new ProcessStartInfo(path) { UseShellExecute = true });
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}
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catch (Exception ex)
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{
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AppLog.Write(ex, "About: failed to open THIRD-PARTY-NOTICES.txt");
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}
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}
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private void AddSourceButton_Click(object sender, RoutedEventArgs e)
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{
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if (sender is Button { ContextMenu: { } menu } button)
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{
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menu.PlacementTarget = button;
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menu.Placement = System.Windows.Controls.Primitives.PlacementMode.Bottom;
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menu.IsOpen = true;
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}
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}
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private void AddSceneButton_Click(object sender, RoutedEventArgs e)
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{
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if (sender is Button { ContextMenu: { } menu } button)
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{
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menu.PlacementTarget = button;
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menu.Placement = System.Windows.Controls.Primitives.PlacementMode.Bottom;
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menu.IsOpen = true;
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}
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}
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// ─── Preview image selection / move / resize ───
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private bool _isDraggingOverlay;
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private bool _isResizing;
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private Point _grabOffset;
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private double _resizeAspect;
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private void Window_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
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{
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if (e.OriginalSource is not DependencyObject original) return;
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if (IsDescendantOf(original, PreviewGrid)) return;
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if (IsDescendantOf(original, SourceList)) return;
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if (IsDescendantOf(original, OpacityChip)) return;
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_viewModel.SelectedElement = null;
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}
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private static bool IsDescendantOf(DependencyObject? child, DependencyObject ancestor)
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{
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while (child != null && !ReferenceEquals(child, ancestor))
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child = VisualTreeHelper.GetParent(child);
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return child != null;
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}
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private void UpdateSelectionOverlay()
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{
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var selected = _viewModel.SelectedElement is { } s && IsDraggableElement(s);
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SelectionOverlay.Visibility = selected ? Visibility.Visible : Visibility.Collapsed;
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OpacityChip.Visibility = selected ? Visibility.Visible : Visibility.Collapsed;
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if (selected)
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OpacityValueText.Text = $"{Math.Round(_viewModel.SelectedElement!.Opacity * 100)}%";
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}
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// Static images and the webcam share the move/resize/selection behavior.
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private static bool IsDraggableElement(SceneElement element)
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=> element is Source { Type: SourceType.Image } or WebcamSceneConfig;
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private void MirrorButton_Click(object sender, RoutedEventArgs e)
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{
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if (_viewModel.SelectedElement is WebcamSceneConfig webcam)
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webcam.IsMirrored = !webcam.IsMirrored;
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}
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private void ShapeButton_Click(object sender, RoutedEventArgs e)
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{
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if (_viewModel.SelectedElement is WebcamSceneConfig webcam)
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webcam.ToggleClipShape();
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}
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private void WebcamMenu_ChangeWebcam(object sender, RoutedEventArgs e)
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=> _viewModel.ChangeWebcamCommand.Execute(null);
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private void WebcamMenu_SetBorderAnimation(object sender, RoutedEventArgs e)
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{
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if (sender is MenuItem { DataContext: WebcamSceneConfig webcam, Tag: string tag }
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&& Enum.TryParse<BorderAnimation>(tag, out var animation))
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webcam.BorderAnimation = animation;
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}
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private void WebcamMenu_SetBorderColor(object sender, RoutedEventArgs e)
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{
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if (sender is MenuItem { DataContext: WebcamSceneConfig webcam, Tag: string color })
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webcam.BorderColor = color;
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}
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private void WebcamMenu_HideInScene(object sender, RoutedEventArgs e)
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{
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if (sender is MenuItem { DataContext: WebcamSceneConfig webcam })
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webcam.IsVisible = false;
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}
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private void WebcamMenu_Remove(object sender, RoutedEventArgs e)
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{
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if (sender is MenuItem { DataContext: SceneElement element })
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_viewModel.RemoveSourceCommand.Execute(element);
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}
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private void BackdropMenu_ChangeCapture(object sender, RoutedEventArgs e)
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{
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_ = _viewModel.ChangeBackdropCaptureAsync();
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}
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private void BackdropMenu_RefreshCapture(object sender, RoutedEventArgs e)
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{
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_viewModel.RefreshBackdropAutoCapture();
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}
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private void SourceMenu_Remove(object sender, RoutedEventArgs e)
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{
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if (sender is MenuItem { DataContext: SceneElement element })
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_viewModel.RemoveSourceCommand.Execute(element);
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}
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private void OpacitySlider_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
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=> OpacityValueText.Text = $"{Math.Round(e.NewValue * 100)}%";
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// ─── Social bar drag: vertical only, direction-snaps to the top/bottom edge ───
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private const double SocialBarBottomTop = 1040;
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private bool _isDraggingSocialBar;
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private double _socialBarDragStartY;
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private SocialBarPosition? _socialBarDragDirection;
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private void SocialBar_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
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{
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var bar = (FrameworkElement)sender;
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_isDraggingSocialBar = true;
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_socialBarDragDirection = null;
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var toCanvas = CanvasGrid.TransformToVisual(bar).Inverse;
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var p = toCanvas.Transform(e.GetPosition(bar));
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_socialBarDragStartY = p.Y;
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bar.CaptureMouse();
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e.Handled = true;
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}
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private void SocialBar_PreviewMouseMove(object sender, MouseEventArgs e)
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{
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if (!_isDraggingSocialBar) return;
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var bar = (FrameworkElement)sender;
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var toCanvas = CanvasGrid.TransformToVisual(bar).Inverse;
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var p = toCanvas.Transform(e.GetPosition(bar));
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// Derive the drag direction once it commits (past the deadzone) and keep it
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// for the rest of the drag — the bar snaps to the edge it's being dragged
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// toward and is never left mid-screen.
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var direction = _socialBarDragDirection
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?? SocialBarSnap.Decide(p.Y - _socialBarDragStartY);
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if (direction != null)
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{
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_socialBarDragDirection = direction;
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Canvas.SetTop(bar, direction == SocialBarPosition.Top ? 0 : SocialBarBottomTop);
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}
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e.Handled = true;
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}
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private void SocialBar_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
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{
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if (!_isDraggingSocialBar) return;
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var bar = (FrameworkElement)sender;
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bar.ReleaseMouseCapture();
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_isDraggingSocialBar = false;
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var direction = _socialBarDragDirection
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?? (Canvas.GetTop(bar) <= SocialBarBottomTop / 2.0
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? SocialBarPosition.Top : SocialBarPosition.Bottom);
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// ClearValue removes the local value Canvas.SetTop applied during the drag —
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// a local value permanently overrides the {Binding SocialBarTop}, which is
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// why the release snap never used to show. Clearing re-engages the binding.
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bar.ClearValue(Canvas.TopProperty);
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_viewModel.SetSocialBarPosition(direction);
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e.Handled = true;
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}
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private void Preview_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
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{
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if (OpacityChip.IsMouseOver) return;
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var grid = (Grid)sender;
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var toCanvas = CanvasGrid.TransformToVisual(grid).Inverse;
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var p = toCanvas.Transform(e.GetPosition(grid));
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var selected = _viewModel.SelectedElement;
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if (selected is { } sel && IsDraggableElement(sel) && HitHandle(e.GetPosition(grid), sel))
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{
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_isResizing = true;
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_resizeAspect = sel.ClipShape == ClipShape.Round ? 1 : sel.Width / Math.Max(1, sel.Height);
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grid.CaptureMouse();
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e.Handled = true;
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return;
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}
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var hit = HitElement(p);
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if (hit != null)
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{
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_viewModel.SelectedElement = hit;
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_isDraggingOverlay = true;
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_grabOffset = new Point(p.X - hit.X, p.Y - hit.Y);
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grid.CaptureMouse();
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e.Handled = true;
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return;
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}
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_viewModel.SelectedElement = null;
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}
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private void Preview_MouseMove(object sender, MouseEventArgs e)
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{
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if (!_isDraggingOverlay && !_isResizing) return;
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var grid = (Grid)sender;
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var toCanvas = CanvasGrid.TransformToVisual(grid).Inverse;
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var p = toCanvas.Transform(e.GetPosition(grid));
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var selected = _viewModel.SelectedElement;
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if (selected == null)
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{
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EndPreviewDrag(grid);
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return;
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}
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if (_isDraggingOverlay)
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{
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var minX = -(selected.Width - 20);
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var maxX = 1920 - 20;
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var minY = -(selected.Height - 20);
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var maxY = 1080 - 20;
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selected.X = Math.Clamp(p.X - _grabOffset.X, Math.Min(minX, maxX), Math.Max(minX, maxX));
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selected.Y = Math.Clamp(p.Y - _grabOffset.Y, Math.Min(minY, maxY), Math.Max(minY, maxY));
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}
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else if (_isResizing)
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{
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var isWebcam = selected is WebcamSceneConfig;
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var maxW = isWebcam ? MainViewModel.MaxWebcamWidthFor(_viewModel.ActiveScene?.Name) : 1920;
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var maxH = isWebcam ? MainViewModel.MaxWebcamHeightFor(_viewModel.ActiveScene?.Name) : 1080;
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var newW = Math.Clamp(p.X - selected.X, 32, maxW);
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var newH = newW / _resizeAspect;
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if (newH > maxH)
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{
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newH = maxH;
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newW = newH * _resizeAspect;
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}
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selected.Width = newW;
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selected.Height = newH;
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}
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}
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private void Preview_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
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=> EndPreviewDrag((Grid)sender);
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private void EndPreviewDrag(Grid grid)
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{
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if (_isDraggingOverlay || _isResizing)
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grid.ReleaseMouseCapture();
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_isDraggingOverlay = false;
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_isResizing = false;
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}
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private bool HitHandle(Point mouseScreen, SceneElement element)
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{
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var corner = CanvasGrid.TransformToVisual(PreviewGrid).Transform(new Point(element.X + element.Width, element.Y + element.Height));
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return Math.Abs(mouseScreen.X - corner.X) <= 20 && Math.Abs(mouseScreen.Y - corner.Y) <= 20;
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}
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private SceneElement? HitElement(Point p)
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{
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var scene = _viewModel.ActiveScene;
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if (scene == null) return null;
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for (var i = scene.Elements.Count - 1; i >= 0; i--)
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{
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var element = scene.Elements[i];
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if (!IsDraggableElement(element)) continue;
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if (element is Source { IsEnabled: false }) continue;
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if (element is WebcamSceneConfig { IsVisible: false }) continue;
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if (p.X >= element.X && p.X <= element.X + element.Width &&
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p.Y >= element.Y && p.Y <= element.Y + element.Height)
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return element;
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}
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return null;
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}
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private void SceneNameBox_KeyDown(object sender, KeyEventArgs e)
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{
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if (e.Key is Key.Enter or Key.Escape)
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{
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CommitSceneEdit(sender);
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e.Handled = true;
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}
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}
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private void SceneNameBox_LostFocus(object sender, RoutedEventArgs e)
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{
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CommitSceneEdit(sender);
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}
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private static void CommitSceneEdit(object sender)
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{
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if (sender is FrameworkElement { DataContext: Scene scene })
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scene.IsEditing = false;
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}
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// ─── List drag-to-reorder (scenes list + sources list) ───
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private Point _dragStartPoint;
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private int _dragIndex = -1;
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private bool _isDragging;
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private object? _lastHoveredItem;
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private void List_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
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{
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var listBox = (ListBox)sender;
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var item = FindItemContainerAt(listBox, e.GetPosition(listBox));
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if (item == null)
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{
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if (ReferenceEquals(listBox, SourceList))
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_viewModel.SelectedElement = null;
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_dragIndex = -1;
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return;
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}
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if (listBox.ItemsSource is not IList items || items.Count == 0)
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{
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_dragIndex = -1;
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return;
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}
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_dragIndex = listBox.Items.IndexOf(item.DataContext);
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_dragStartPoint = e.GetPosition(listBox);
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_isDragging = false;
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_lastHoveredItem = null;
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}
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private void List_PreviewMouseMove(object sender, MouseEventArgs e)
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{
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if (_dragIndex < 0) return;
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var listBox = (ListBox)sender;
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if (e.LeftButton != MouseButtonState.Pressed || listBox.ItemsSource is not IList items)
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{
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EndListDrag(listBox);
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return;
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}
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var position = e.GetPosition(listBox);
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if (!_isDragging)
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{
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if (Math.Abs(position.X - _dragStartPoint.X) < SystemParameters.MinimumHorizontalDragDistance &&
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Math.Abs(position.Y - _dragStartPoint.Y) < SystemParameters.MinimumVerticalDragDistance)
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return;
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_isDragging = true;
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listBox.CaptureMouse();
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}
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var item = FindItemContainerAt(listBox, position);
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if (item == null) return;
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var targetItem = item.DataContext;
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if (ReferenceEquals(targetItem, items[_dragIndex]) || ReferenceEquals(targetItem, _lastHoveredItem))
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return;
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var targetIndex = listBox.Items.IndexOf(targetItem);
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if (targetIndex < 0) return;
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var dragged = items[_dragIndex];
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items.RemoveAt(_dragIndex);
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items.Insert(targetIndex, dragged);
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_dragIndex = targetIndex;
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_lastHoveredItem = targetItem;
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}
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private void List_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
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{
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EndListDrag((ListBox)sender);
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}
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private void EndListDrag(ListBox listBox)
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{
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if (_isDragging)
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listBox.ReleaseMouseCapture();
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_dragIndex = -1;
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_isDragging = false;
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_lastHoveredItem = null;
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}
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private static ListBoxItem? FindItemContainerAt(ListBox listBox, Point position)
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{
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var hit = listBox.InputHitTest(position) as DependencyObject;
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while (hit != null && hit != listBox)
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{
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if (hit is ListBoxItem item) return item;
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hit = VisualTreeHelper.GetParent(hit);
|
|
}
|
|
return null;
|
|
}
|
|
}
|