137 lines
4.3 KiB
C#
137 lines
4.3 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Controls.Primitives;
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using System.Windows.Media.Animation;
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namespace AntDesign.WPF.Controls
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{
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[TemplatePart(Name = PART_Dot, Type = typeof(FrameworkElement))]
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public class Switch : ToggleButton
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{
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#region Fields
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private const string PART_Dot = "PART_Dot";
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private FrameworkElement dot;
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private VisualState pressedState;
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private Storyboard pressedStoryboard;
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#endregion
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#region Properties
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public static readonly DependencyProperty LoadingProperty =
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DependencyProperty.Register("Loading", typeof(bool), typeof(Switch), new PropertyMetadata(false));
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/// <summary>
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/// Gets/sets loading state of switch.
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/// </summary>
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public bool Loading
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{
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get { return (bool)GetValue(LoadingProperty); }
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set { SetValue(LoadingProperty, value); }
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}
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public static readonly DependencyProperty SizeProperty =
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DependencyProperty.Register("Size", typeof(Sizes?), typeof(Switch), new PropertyMetadata(null));
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/// <summary>
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/// Gets/sets the size of the switch.
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/// </summary>
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public Sizes? Size
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{
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get { return (Sizes?)GetValue(SizeProperty); }
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set { SetValue(SizeProperty, value); }
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}
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public static readonly DependencyProperty UnCheckedContentProperty =
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DependencyProperty.Register("UnCheckedContent", typeof(object), typeof(Switch), new PropertyMetadata(null));
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/// <summary>
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/// Gets/sets content to be shown when the state is unchecked.
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/// </summary>
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public object UnCheckedContent
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{
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get { return GetValue(UnCheckedContentProperty); }
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set { SetValue(UnCheckedContentProperty, value); }
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}
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#endregion
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#region Constructors
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static Switch()
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{
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DefaultStyleKeyProperty.OverrideMetadata(typeof(Switch), new FrameworkPropertyMetadata(typeof(Switch)));
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}
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#endregion
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#region Overrides
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public override void OnApplyTemplate()
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{
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base.OnApplyTemplate();
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dot = GetTemplateChild(PART_Dot) as FrameworkElement;
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pressedState = GetTemplateChild("Pressed") as VisualState;
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if (pressedState != null && pressedState.Storyboard != null)
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{
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pressedStoryboard = pressedState.Storyboard.Clone();
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}
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}
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protected override void OnRenderSizeChanged(SizeChangedInfo sizeInfo)
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{
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base.OnRenderSizeChanged(sizeInfo);
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SetDotAnimation();
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}
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private bool DotAnimated = false;
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protected override void OnIsPressedChanged(DependencyPropertyChangedEventArgs e)
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{
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base.OnIsPressedChanged(e);
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//if (!DotAnimated)
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//{
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if (dot != null /*&& IsChecked.HasValue && IsChecked.Value*/ && IsPressed)
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{
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var to = dot.Margin;
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// to.Left -= dot.ActualWidth * 1.3333 - dot.ActualWidth;
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to.Right -= dot.ActualWidth * 1.3333 - dot.ActualWidth;
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var ease = new CircleEase() { EasingMode = EasingMode.EaseInOut };
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var animation = new ThicknessAnimation(to, TimeSpan.FromSeconds(0.36)) { EasingFunction = ease };
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dot.BeginAnimation(MarginProperty, animation);
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}
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//else if (!IsPressed) DotAnimated = false;
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//}
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}
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private void SetDotAnimation()
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{
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if (dot == null || pressedState == null || DotAnimated) return;
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DotAnimated = true;
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var storyboard = pressedStoryboard != null ? pressedStoryboard.Clone() : new Storyboard();
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var ease = new CircleEase() { EasingMode = EasingMode.EaseInOut };
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var animation = new DoubleAnimation(dot.ActualWidth * 1.3333, TimeSpan.FromSeconds(0.36)) { EasingFunction = ease };
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Storyboard.SetTargetName(animation, PART_Dot);
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Storyboard.SetTargetProperty(animation, new PropertyPath("Width"));
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storyboard.Children.Add(animation);
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pressedState.Storyboard = storyboard;
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}
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#endregion
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}
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}
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