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chore: add avalonia TabControlSliding demo.
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113 changes: 113 additions & 0 deletions
113
src/Avalonia/HandyControl_Avalonia/Controls/TabControl/SlidingTabContainer.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| using System; | ||
| using Avalonia; | ||
| using Avalonia.Animation; | ||
| using Avalonia.Animation.Easings; | ||
| using Avalonia.Controls; | ||
| using Avalonia.Controls.Metadata; | ||
| using Avalonia.Controls.Primitives; | ||
| using Avalonia.Interactivity; | ||
| using Avalonia.Layout; | ||
| using Avalonia.Media; | ||
| using Avalonia.Styling; | ||
| using HandyControl.Tools; | ||
|
|
||
| namespace HandyControl.Controls; | ||
|
|
||
| [TemplatePart(Name = ElementSliding, Type = typeof(Layoutable))] | ||
| public class SlidingTabContainer : ContentControl | ||
| { | ||
| private const string ElementSliding = "PART_Sliding"; | ||
|
|
||
| private Control? _sliding; | ||
| private TabControl? _tabControl; | ||
|
|
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| protected override void OnLoaded(RoutedEventArgs e) | ||
| { | ||
| base.OnLoaded(e); | ||
| OnSelectionChanged(null, null!); | ||
| } | ||
|
|
||
| protected override void OnApplyTemplate(TemplateAppliedEventArgs e) | ||
| { | ||
| if (_tabControl is not null) | ||
| { | ||
| _tabControl.SelectionChanged -= OnSelectionChanged; | ||
| } | ||
|
|
||
| base.OnApplyTemplate(e); | ||
|
|
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| _tabControl = VisualHelper.GetParent<TabControl>(this); | ||
| if (_tabControl is null) | ||
| { | ||
| return; | ||
| } | ||
|
|
||
| _tabControl.SelectionChanged += OnSelectionChanged; | ||
|
|
||
| _sliding = e.NameScope.Find<Control>(ElementSliding); | ||
| if (_sliding is null) | ||
| { | ||
| return; | ||
| } | ||
|
|
||
| if (IsLoaded) | ||
| { | ||
| OnSelectionChanged(null, null!); | ||
| } | ||
| } | ||
|
|
||
| protected override void OnSizeChanged(SizeChangedEventArgs e) | ||
| { | ||
| base.OnSizeChanged(e); | ||
|
|
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| if (_tabControl is null) | ||
| { | ||
| return; | ||
| } | ||
|
|
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| OnSelectionChanged(null, null!); | ||
| } | ||
|
|
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| private void OnSelectionChanged(object? sender, SelectionChangedEventArgs e) | ||
| { | ||
| const int animationSpeed = 200; | ||
|
|
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| if (_sliding is null || _tabControl?.SelectedItem is null || !IsLoaded) | ||
| { | ||
| return; | ||
| } | ||
|
|
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| if (_tabControl.ContainerFromItem(_tabControl.SelectedItem) is not TabItem tabItem) | ||
| { | ||
| return; | ||
| } | ||
|
|
||
| var padding = Padding; | ||
| Point? offset = tabItem.TranslatePoint(new Point(-padding.Left, -padding.Top), this); | ||
| if (offset is null) | ||
| { | ||
| return; | ||
| } | ||
|
|
||
| new Animation | ||
| { | ||
| FillMode = FillMode.Forward, | ||
| Duration = TimeSpan.FromMilliseconds(animationSpeed), | ||
| Easing = new QuadraticEaseOut(), | ||
| Children = | ||
| { | ||
| new KeyFrame | ||
| { | ||
| Setters = | ||
| { | ||
| new Setter(WidthProperty, tabItem.Bounds.Width), | ||
| new Setter(HeightProperty, tabItem.Bounds.Height), | ||
| new Setter(TranslateTransform.XProperty, offset.Value.X), | ||
| new Setter(TranslateTransform.YProperty, offset.Value.Y), | ||
| }, | ||
| Cue = new Cue(1), | ||
| } | ||
| } | ||
| }.RunAsync(_sliding); | ||
| } | ||
| } |
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