Refactor SwitchKnob

2026-10-21 08:32:21 +08:00 · 2025-08-22 18:37:33 +08:00
parent 27c0293cbd
commit 48953ea921
3 changed files with 62 additions and 47 deletions
@@ -1,19 +1,24 @@
+using System.Reactive.Disposables;
+using AtomUI.Animations;
 using AtomUI.Controls.Utils;
 using AtomUI.Data;
 using AtomUI.Media;
+using AtomUI.Theme;
+using AtomUI.Theme.Data;
+using AtomUI.Theme.Styling;
 using AtomUI.Utils;
 using Avalonia;
 using Avalonia.Animation;
 using Avalonia.Animation.Easings;
 using Avalonia.Controls;
-using Avalonia.Controls.Primitives;
+using Avalonia.LogicalTree;
 using Avalonia.Media;
 using Avalonia.Styling;
 using Avalonia.VisualTree;

 namespace AtomUI.Controls;

-internal class SwitchKnob : TemplatedControl
+internal class SwitchKnob : Control, IResourceBindingManager
 {
    #region 公共属性定义
    
@@ -23,8 +28,8 @@ internal class SwitchKnob : TemplatedControl
    public static readonly StyledProperty<IBrush?> KnobBackgroundColorProperty =
        AvaloniaProperty.Register<SwitchKnob, IBrush?>(nameof(KnobBackgroundColor));
        
-    public static readonly StyledProperty<BoxShadow> KnobBoxShadowProperty = 
-        AvaloniaProperty.Register<SwitchKnob, BoxShadow>(nameof(KnobBoxShadow));
+    public static readonly StyledProperty<BoxShadow?> KnobBoxShadowProperty = 
+        AvaloniaProperty.Register<SwitchKnob, BoxShadow?>(nameof(KnobBoxShadow));
    
    public IBrush? KnobBackgroundColor
    {
@@ -38,7 +43,7 @@ internal class SwitchKnob : TemplatedControl
        set => SetValue(IsCheckedStateProperty, value);
    }

-    public BoxShadow KnobBoxShadow
+    public BoxShadow? KnobBoxShadow
    {
        get => GetValue(KnobBoxShadowProperty);
        set => SetValue(KnobBoxShadowProperty, value);
@@ -65,9 +70,11 @@ internal class SwitchKnob : TemplatedControl
    
    internal static readonly StyledProperty<TimeSpan> LoadingAnimationDurationProperty =
        AvaloniaProperty.Register<SwitchKnob, TimeSpan>(nameof(LoadingAnimationDuration));
-    
-    internal static readonly StyledProperty<double> LoadingBgOpacityProperty =
-        AvaloniaProperty.Register<SwitchKnob, double>(nameof(LoadingBgOpacity));
+
+    internal static readonly DirectProperty<SwitchKnob, double> LoadingBgOpacityProperty =
+        AvaloniaProperty.RegisterDirect<SwitchKnob, double>(nameof(LoadingBgOpacity),
+            o => o.LoadingBgOpacity,
+            (o, v) => o.LoadingBgOpacity = v);

    internal int Rotation
    {
@@ -105,21 +112,29 @@ internal class SwitchKnob : TemplatedControl
        set => SetValue(LoadingAnimationDurationProperty, value);
    }
    
+    private double _loadingBgOpacity;
    internal double LoadingBgOpacity
    {
-        get => GetValue(LoadingBgOpacityProperty);
-        set => SetValue(LoadingBgOpacityProperty, value);
+        get => _loadingBgOpacity;
+        set => SetAndRaise(LoadingBgOpacityProperty, ref _loadingBgOpacity, value);
+    }
+    
+    CompositeDisposable? IResourceBindingManager.ResourceBindingsDisposable 
+    {
+        get => _resourceBindingsDisposable;
+        set => _resourceBindingsDisposable = value;
    }
    
    #endregion
    
+    private CompositeDisposable? _resourceBindingsDisposable;
    private bool _isLoading;
    private CancellationTokenSource? _cancellationTokenSource;
    
    static SwitchKnob()
    {
        AffectsRender<SwitchKnob>(
-            RotationProperty, KnobRenderWidthProperty, LoadIndicatorBrushProperty, KnobBoxShadowProperty);
+            RotationProperty, KnobRenderWidthProperty, LoadIndicatorBrushProperty);
        AffectsMeasure<SwitchKnob>(KnobSizeProperty);
    }
    
@@ -196,12 +211,6 @@ internal class SwitchKnob : TemplatedControl
        return KnobSize;
    }

-    protected override void OnSizeChanged(SizeChangedEventArgs e)
-    {
-        base.OnSizeChanged(e);
-        ConfigureTransitions(false);
-    }
-
    protected override void OnPropertyChanged(AvaloniaPropertyChangedEventArgs change)
    {
        base.OnPropertyChanged(change);
@@ -211,31 +220,52 @@ internal class SwitchKnob : TemplatedControl
        }
        else if (change.Property == KnobBoxShadowProperty)
        {
-            Effect = new DropShadowEffect
+            if (KnobBoxShadow != null)
            {
-                OffsetX    = KnobBoxShadow.OffsetX,
-                OffsetY    = KnobBoxShadow.OffsetY,
-                Color      = KnobBoxShadow.Color,
-                BlurRadius = KnobBoxShadow.Blur
-            };
+                Effect = new DropShadowEffect
+                {
+                    OffsetX    = KnobBoxShadow.Value.OffsetX,
+                    OffsetY    = KnobBoxShadow.Value.OffsetY,
+                    Color      = KnobBoxShadow.Value.Color,
+                    BlurRadius = KnobBoxShadow.Value.Blur
+                };
+            }
        }
-        
+
        if (this.IsAttachedToVisualTree())
        {
            if (change.Property == IsMotionEnabledProperty)
            {
-                ConfigureTransitions(true);
+                ConfigureTransitions();
            }
        }
    }

+    protected override void OnSizeChanged(SizeChangedEventArgs e)
+    {
+        base.OnSizeChanged(e);
+        this.EnableTransitions();
+    }
+
+    protected override void OnAttachedToLogicalTree(LogicalTreeAttachmentEventArgs e)
+    {
+        base.OnAttachedToLogicalTree(e);
+        this.AddResourceBindingDisposable(TokenResourceBinder.CreateTokenBinding(this, LoadingBgOpacityProperty,
+            ToggleSwitchTokenKey.SwitchDisabledOpacity));
+        this.AddResourceBindingDisposable(TokenResourceBinder.CreateTokenBinding(this, LoadingAnimationDurationProperty,
+            ToggleSwitchTokenKey.LoadingAnimationDuration));
+    }
+
    protected override void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs e)
    {
        base.OnAttachedToVisualTree(e);
+        _resourceBindingsDisposable = new CompositeDisposable();
        if (_isLoading)
        {
            StartLoadingAnimation();
        }
+        ConfigureTransitions();
+        this.DisableTransitions();
    }

    protected override void OnDetachedFromVisualTree(VisualTreeAttachmentEventArgs e)
@@ -245,8 +275,7 @@ internal class SwitchKnob : TemplatedControl
        {
            _cancellationTokenSource?.Cancel();
        }
-
-        Transitions = null;
+        this.DisposeTokenBindings();
    }

    public sealed override void Render(DrawingContext context)
@@ -279,24 +308,21 @@ internal class SwitchKnob : TemplatedControl
            var       rotationMatrix          = Matrix.CreateRotation(Rotation * Math.PI / 180);
            using var translateToCenterState  = context.PushTransform(translateToCenterMatrix);
            using var rotationMatrixState     = context.PushTransform(rotationMatrix);
-            using var bgOpacity               = context.PushOpacity(LoadingBgOpacity);
+            using var bgOpacity               = context.PushOpacity(_loadingBgOpacity);

            context.DrawArc(pen, loadingRect, 0, 90);
        }
    }
    
-    private void ConfigureTransitions(bool force)
+    private void ConfigureTransitions()
    {
        if (IsMotionEnabled)
        {
-            if (force || Transitions == null)
+            Transitions ??= new Transitions
            {
-                Transitions = new Transitions
-                {
-                    TransitionUtils.CreateTransition<DoubleTransition>(KnobRenderWidthProperty),
-                    TransitionUtils.CreateTransition<DoubleTransition>(OpacityProperty),
-                };
-            }
+                TransitionUtils.CreateTransition<DoubleTransition>(KnobRenderWidthProperty),
+                TransitionUtils.CreateTransition<DoubleTransition>(OpacityProperty),
+            };
        }
        else
        {
@@ -1,10 +0,0 @@
-<ResourceDictionary
-    xmlns="https://github.com/avaloniaui"
-    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:atom="https://atomui.net"
-    x:ClassModifier="internal">
-    <ControlTheme x:Key="{x:Type atom:SwitchKnob}" TargetType="atom:SwitchKnob">
-        <Setter Property="LoadingBgOpacity" Value="{DynamicResource {x:Static atom:ToggleSwitchTokenKey.SwitchDisabledOpacity}}" />
-        <Setter Property="LoadingAnimationDuration" Value="{DynamicResource {x:Static atom:ToggleSwitchTokenKey.LoadingAnimationDuration}}" />
-    </ControlTheme>
-</ResourceDictionary>
@@ -2,7 +2,6 @@
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    x:ClassModifier="internal">
    <ResourceDictionary.MergedDictionaries>
-        <ResourceInclude Source="SwitchKnobTheme.axaml"/>
        <ResourceInclude Source="ToggleSwitchTheme.axaml"/>
    </ResourceDictionary.MergedDictionaries>
 </ResourceDictionary>