300 lines
10 KiB
C#
300 lines
10 KiB
C#
using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Media;
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using System.Windows.Media.Animation;
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using System.Windows.Threading;
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using PropertyMetadata = System.Windows.PropertyMetadata;
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namespace YY.Admin.Core.Controls
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{
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//图标官网
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public enum FontAwesomeStyle
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{
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/// <summary>
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/// 常规
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/// </summary>
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Regular,
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/// <summary>
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/// 实心的
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/// </summary>
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Solid,
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/// <summary>
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/// 品牌（Logo）
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/// </summary>
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Brands
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}
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public class FontAwesomeIcon : TextBlock
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{
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#region Icon 属性
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public static readonly DependencyProperty IconProperty =
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DependencyProperty.Register(nameof(Icon), typeof(string), typeof(FontAwesomeIcon),
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new PropertyMetadata(null, (d, e) => ((FontAwesomeIcon)d).Text = e.NewValue?.ToString()));
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public string Icon
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{
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get => (string)GetValue(IconProperty);
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set => SetValue(IconProperty, value);
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}
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#endregion
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#region Spin 属性
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public static readonly DependencyProperty SpinProperty =
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DependencyProperty.Register(nameof(Spin), typeof(bool), typeof(FontAwesomeIcon),
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new PropertyMetadata(false, (d, e) => ((FontAwesomeIcon)d).UpdateAnimation()));
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public bool Spin
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{
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get => (bool)GetValue(SpinProperty);
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set => SetValue(SpinProperty, value);
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}
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#endregion
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#region SpinSpeed 属性
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public static readonly DependencyProperty SpinSpeedProperty =
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DependencyProperty.Register(nameof(SpinSpeed), typeof(double), typeof(FontAwesomeIcon),
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new PropertyMetadata(1.0, (d, e) =>
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{
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var fa = (FontAwesomeIcon)d;
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if (fa.Spin)
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fa.StartSpin();
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}));
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public double SpinSpeed
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{
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get => (double)GetValue(SpinSpeedProperty);
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set => SetValue(SpinSpeedProperty, value);
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}
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#endregion
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#region Beat 属性
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public static readonly DependencyProperty BeatProperty =
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DependencyProperty.Register(nameof(Beat), typeof(bool), typeof(FontAwesomeIcon),
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new PropertyMetadata(false, (d, e) => ((FontAwesomeIcon)d).UpdateAnimation()));
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public bool Beat
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{
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get => (bool)GetValue(BeatProperty);
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set => SetValue(BeatProperty, value);
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}
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#endregion
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#region BeatScale 属性
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public static readonly DependencyProperty BeatScaleProperty =
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DependencyProperty.Register(nameof(BeatScale), typeof(double), typeof(FontAwesomeIcon),
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new PropertyMetadata(1.3));
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public double BeatScale
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{
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get => (double)GetValue(BeatScaleProperty);
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set => SetValue(BeatScaleProperty, value);
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}
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#endregion
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#region BeatDuration 属性
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public static readonly DependencyProperty BeatDurationProperty =
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DependencyProperty.Register(nameof(BeatDuration), typeof(double), typeof(FontAwesomeIcon),
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new PropertyMetadata(0.5));
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public double BeatDuration
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{
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get => (double)GetValue(BeatDurationProperty);
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set => SetValue(BeatDurationProperty, value);
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}
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#endregion
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#region IconFamily 属性
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public static readonly DependencyProperty IconFamilyProperty =
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DependencyProperty.Register(nameof(IconFamily), typeof(FontAwesomeStyle), typeof(FontAwesomeIcon),
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new PropertyMetadata(FontAwesomeStyle.Regular, OnIconFamilyChanged));
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public FontAwesomeStyle IconFamily
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{
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get => (FontAwesomeStyle)GetValue(IconFamilyProperty);
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set => SetValue(IconFamilyProperty, value);
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}
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private static void OnIconFamilyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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var fa = (FontAwesomeIcon)d;
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fa.UpdateFontFamily();
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}
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private void UpdateFontFamily()
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{
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FontFamily = IconFamily switch
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{
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FontAwesomeStyle.Regular => (FontFamily)Application.Current.Resources["FontAwesomeRegular"],
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FontAwesomeStyle.Solid => (FontFamily)Application.Current.Resources["FontAwesomeSolid"],
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FontAwesomeStyle.Brands => (FontFamily)Application.Current.Resources["FontAwesomeBrands"],
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_ => (FontFamily)Application.Current.Resources["FontAwesomeRegular"]
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};
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}
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#endregion
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// Transform components
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private RotateTransform? _rotateTransform;
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private ScaleTransform? _scaleTransform;
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private TransformGroup? _transformGroup;
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private bool _initialized = false;
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private DoubleAnimation? _currentSpinAnimation;
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public FontAwesomeIcon()
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{
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// 设置文本对齐方式，确保内容居中
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TextAlignment = TextAlignment.Center;
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VerticalAlignment = VerticalAlignment.Center;
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HorizontalAlignment = HorizontalAlignment.Center;
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// 设置默认字体家庭
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UpdateFontFamily();
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// 创建 transforms
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_rotateTransform = new RotateTransform();
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_scaleTransform = new ScaleTransform(1, 1);
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_transformGroup = new TransformGroup();
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_transformGroup.Children.Add(_scaleTransform);
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_transformGroup.Children.Add(_rotateTransform);
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// 使用 RenderTransform 避免布局抖动
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RenderTransform = _transformGroup;
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// 关键：设置变换原点为内容中心
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RenderTransformOrigin = new Point(0.5, 0.5);
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// 延迟初始化到 Loaded
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Loaded += OnLoadedSafe;
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Unloaded += OnUnloadedSafe;
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SizeChanged += OnSizeChangedSafe;
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}
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private void OnLoadedSafe(object? sender, RoutedEventArgs e)
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{
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Dispatcher.BeginInvoke((Action)(() =>
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{
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if (_initialized) return;
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_initialized = true;
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UpdateAnimation();
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}), DispatcherPriority.Loaded);
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}
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private void OnSizeChangedSafe(object? sender, SizeChangedEventArgs e)
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{
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// 确保变换原点始终居中
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RenderTransformOrigin = new Point(0.5, 0.5);
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}
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private void OnUnloadedSafe(object? sender, RoutedEventArgs e)
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{
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// 停止动画，避免内存泄漏
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StopSpin();
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StopBeat();
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}
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private void UpdateAnimation()
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{
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if (DesignerProperties.GetIsInDesignMode(this)) return;
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if (!_initialized)
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{
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return;
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}
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if (Spin) StartSpin(); else StopSpin();
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if (Beat) StartBeat(); else StopBeat();
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}
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private void StartSpin()
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{
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if (_rotateTransform == null) return;
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// 重新确认 RenderTransform 已正确赋值
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if (RenderTransform != _transformGroup)
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{
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RenderTransform = _transformGroup;
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RenderTransformOrigin = new Point(0.5, 0.5);
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}
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// 先取消旧动画
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StopSpin();
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// 方法1：使用 By 动画实现无缝旋转（推荐）
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var anim = new DoubleAnimation
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{
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By = 360, // 每次增加360度
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Duration = TimeSpan.FromSeconds(Math.Max(0.01, SpinSpeed)),
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RepeatBehavior = RepeatBehavior.Forever
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};
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// 动画在 WPF 内部直接使用 Freezable 缓存，提高性能
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anim.Freeze();
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_currentSpinAnimation = anim;
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_rotateTransform.BeginAnimation(RotateTransform.AngleProperty, anim);
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// 方法2：使用 IsCumulative 属性（备选方案）
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/*
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var anim = new DoubleAnimation(0, 360, new Duration(TimeSpan.FromSeconds(Math.Max(0.01, SpinSpeed))))
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{
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RepeatBehavior = RepeatBehavior.Forever,
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IsCumulative = true // 累积值，避免跳回0度
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};
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*/
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}
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private void StopSpin()
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{
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_rotateTransform?.BeginAnimation(RotateTransform.AngleProperty, null);
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_currentSpinAnimation = null;
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// 重置旋转角度
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if (_rotateTransform != null)
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_rotateTransform.Angle = 0;
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}
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private void StartBeat()
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{
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if (_scaleTransform == null)
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{
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return;
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}
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// 重新确认 RenderTransform 已正确赋值
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if (RenderTransform != _transformGroup)
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{
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RenderTransform = _transformGroup;
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RenderTransformOrigin = new Point(0.5, 0.5);
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}
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// 先停止已有缩放动画
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_scaleTransform.BeginAnimation(ScaleTransform.ScaleXProperty, null);
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_scaleTransform.BeginAnimation(ScaleTransform.ScaleYProperty, null);
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// 使用更平滑的缓动函数
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var anim = new DoubleAnimation(1.0, BeatScale, new Duration(TimeSpan.FromSeconds(Math.Max(0.01, BeatDuration))))
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{
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AutoReverse = true,
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RepeatBehavior = RepeatBehavior.Forever,
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EasingFunction = new QuadraticEase() { EasingMode = EasingMode.EaseInOut }
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};
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_scaleTransform.BeginAnimation(ScaleTransform.ScaleXProperty, anim);
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_scaleTransform.BeginAnimation(ScaleTransform.ScaleYProperty, anim);
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}
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private void StopBeat()
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{
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if (_scaleTransform != null)
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{
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_scaleTransform.BeginAnimation(ScaleTransform.ScaleXProperty, null);
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_scaleTransform.BeginAnimation(ScaleTransform.ScaleYProperty, null);
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_scaleTransform.ScaleX = 1.0;
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_scaleTransform.ScaleY = 1.0;
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}
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}
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}
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} |