109 lines
3.9 KiB
C#
109 lines
3.9 KiB
C#
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namespace NeumUI.Assists;
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/// <summary>
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/// TabAssist 类用于在 WPF 应用程序中为 TabControl 提供附加功能。通过依赖属性 UseFadeIn，可以控制选项卡切换时是否启用渐变浮现效果。
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/// 该类扩展了 DependencyObject，因此能够支持数据绑定和样式设置。
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/// </summary>
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public class TabAssist
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{
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/// <summary>
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/// 获取指定依赖对象是否启用渐变浮现效果。
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/// </summary>
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/// <param name="obj">要获取渐变浮现效果设置的依赖对象。</param>
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/// <returns>如果依赖对象启用了渐变浮现效果，则返回 true；否则返回 false。</returns>
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public static bool GetUseFadeIn(DependencyObject obj)
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{
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return (bool)obj.GetValue(UseFadeInProperty);
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}
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/// <summary>
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/// 设置指定依赖对象是否启用渐变浮现效果。
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/// </summary>
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/// <param name="obj">要设置 UseFadeIn 属性的 DependencyObject。</param>
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/// <param name="value">如果为 true，则启用渐变浮现效果；否则，禁用该效果。</param>
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public static void SetUseFadeIn(DependencyObject obj, bool value)
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{
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obj.SetValue(UseFadeInProperty, value);
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}
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/// <summary>
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/// UseFadeInProperty 是一个依赖属性，用于控制 TabControl 在选项卡切换时是否启用渐变浮现效果。通过设置此属性为 true 或 false，可以开启或关闭该视觉效果。
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/// </summary>
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public static readonly DependencyProperty UseFadeInProperty =
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DependencyProperty.RegisterAttached("UseFadeIn",
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typeof(bool), typeof(TabAssist),
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new PropertyMetadata(false, OnUseFadeInChanged));
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//切换选项卡时使用渐变浮现效果
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private static void OnUseFadeInChanged(DependencyObject d,
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DependencyPropertyChangedEventArgs e)
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{
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var tabControl = (TabControl)d;
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if (!(bool)e.OldValue && (bool)e.NewValue)
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{
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tabControl.SelectionChanged += TabControl_FadeInEffect;
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}
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if ((bool)e.OldValue && !(bool)e.NewValue)
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{
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tabControl.SelectionChanged -= TabControl_FadeInEffect;
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}
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}
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private static void TabControl_FadeInEffect(object sender, SelectionChangedEventArgs e)
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{
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var tabControl = (TabControl)sender;
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//判断是子控件消息还是Tab消息
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if (e.Source.GetType() == typeof(TabControl)) return;
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e.Handled = true;
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//继续向父级传递
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if (tabControl.Parent is not UIElement tabParent) return;
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var selectionEventArg =
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new SelectionChangedEventArgs(e.RoutedEvent, e.RemovedItems, e.AddedItems)
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{
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Source = e.OriginalSource
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};
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tabParent.RaiseEvent(selectionEventArg);
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}
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// 注册 TabType 附加属性
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public static readonly DependencyProperty TabTypeProperty =
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DependencyProperty.RegisterAttached(
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"TabType",
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typeof(TabType),
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typeof(TabAssist),
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new PropertyMetadata(TabType.Line)); // 默认值为 Line
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public static void SetTabType(DependencyObject element, TabType value)
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{
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element.SetValue(TabTypeProperty, value);
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}
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public static TabType GetTabType(DependencyObject element)
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{
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return (TabType)element.GetValue(TabTypeProperty);
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}
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// 注册 IsEditable 附加属性
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public static readonly DependencyProperty IsEditableProperty =
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DependencyProperty.RegisterAttached(
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"IsEditable",
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typeof(bool),
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typeof(TabAssist),
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new PropertyMetadata(false));
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public static void SetIsEditable(DependencyObject element, bool value)
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{
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element.SetValue(IsEditableProperty, value);
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}
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public static bool GetIsEditable(DependencyObject element)
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{
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return (bool)element.GetValue(IsEditableProperty);
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}
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}
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public enum TabType
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{
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Line, // 默认线条样式
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Card // 卡片样式
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}
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