mirror of
https://github.com/babalae/better-genshin-impact.git
synced 2026-05-17 09:26:50 +08:00
410 lines
13 KiB
C#
410 lines
13 KiB
C#
using System;
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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.ComponentModel;
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namespace BetterGenshinImpact.View.Controls.Drawer;
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public class CustomDrawer : ContentControl
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{
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#region 依赖属性
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public static readonly DependencyProperty IsOpenProperty =
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DependencyProperty.Register(nameof(IsOpen), typeof(bool), typeof(CustomDrawer),
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new PropertyMetadata(false, OnIsOpenChanged));
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public static readonly DependencyProperty DrawerPositionProperty =
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DependencyProperty.Register(nameof(DrawerPosition), typeof(DrawerPosition), typeof(CustomDrawer),
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new PropertyMetadata(DrawerPosition.Right, OnDrawerPositionChanged));
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public static readonly DependencyProperty OpenWidthProperty =
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DependencyProperty.Register(nameof(OpenWidth), typeof(double), typeof(CustomDrawer),
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new PropertyMetadata(400.0));
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public static readonly DependencyProperty OpenHeightProperty =
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DependencyProperty.Register(nameof(OpenHeight), typeof(double), typeof(CustomDrawer),
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new PropertyMetadata(300.0));
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public static readonly DependencyProperty AnimationDurationProperty =
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DependencyProperty.Register(nameof(AnimationDuration), typeof(TimeSpan), typeof(CustomDrawer),
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new PropertyMetadata(TimeSpan.FromMilliseconds(200)));
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public static readonly DependencyProperty BackgroundOpacityProperty =
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DependencyProperty.Register(nameof(BackgroundOpacity), typeof(double), typeof(CustomDrawer),
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new PropertyMetadata(0.6));
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public static readonly DependencyProperty DrawerBackgroundProperty =
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DependencyProperty.Register(nameof(DrawerBackground), typeof(Brush), typeof(CustomDrawer),
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new PropertyMetadata(Brushes.Black));
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#endregion
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#region 事件
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/// <summary>
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/// 抽屉打开后触发的事件
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/// </summary>
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public event EventHandler Opened;
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/// <summary>
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/// 抽屉关闭前触发的事件，可以取消关闭操作
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/// </summary>
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public event CancelEventHandler Closing;
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/// <summary>
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/// 引发 Opened 事件
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/// </summary>
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protected virtual void OnOpened()
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{
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Opened?.Invoke(this, EventArgs.Empty);
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}
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/// <summary>
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/// 引发 Closing 事件
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/// </summary>
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/// <returns>如果取消关闭，则返回 true；否则返回 false</returns>
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protected virtual bool OnClosing()
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{
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if (Closing != null)
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{
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CancelEventArgs args = new CancelEventArgs();
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Closing(this, args);
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return args.Cancel;
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}
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return false;
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}
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#endregion
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#region 属性
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public bool IsOpen
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{
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get => (bool)GetValue(IsOpenProperty);
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set => SetValue(IsOpenProperty, value);
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}
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public DrawerPosition DrawerPosition
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{
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get => (DrawerPosition)GetValue(DrawerPositionProperty);
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set => SetValue(DrawerPositionProperty, value);
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}
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public double OpenWidth
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{
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get => (double)GetValue(OpenWidthProperty);
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set => SetValue(OpenWidthProperty, value);
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}
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public double OpenHeight
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{
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get => (double)GetValue(OpenHeightProperty);
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set => SetValue(OpenHeightProperty, value);
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}
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public TimeSpan AnimationDuration
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{
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get => (TimeSpan)GetValue(AnimationDurationProperty);
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set => SetValue(AnimationDurationProperty, value);
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}
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public double BackgroundOpacity
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{
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get => (double)GetValue(BackgroundOpacityProperty);
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set => SetValue(BackgroundOpacityProperty, value);
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}
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public Brush DrawerBackground
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{
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get => (Brush)GetValue(DrawerBackgroundProperty);
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set => SetValue(DrawerBackgroundProperty, value);
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}
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#endregion
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private Border _backgroundOverlay;
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private Border _drawerContainer;
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private Grid _mainGrid;
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static CustomDrawer()
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{
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DefaultStyleKeyProperty.OverrideMetadata(typeof(CustomDrawer),
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new FrameworkPropertyMetadata(typeof(CustomDrawer)));
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}
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public CustomDrawer()
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{
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this.Loaded += CustomDrawer_Loaded;
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}
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public override void OnApplyTemplate()
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{
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base.OnApplyTemplate();
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_mainGrid = GetTemplateChild("PART_MainGrid") as Grid;
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_backgroundOverlay = GetTemplateChild("PART_BackgroundOverlay") as Border;
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_drawerContainer = GetTemplateChild("PART_DrawerContainer") as Border;
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if (_backgroundOverlay != null)
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{
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_backgroundOverlay.MouseDown += BackgroundOverlay_MouseDown;
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}
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UpdateDrawerPosition();
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UpdateOpenState(false);
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}
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private void CustomDrawer_Loaded(object sender, RoutedEventArgs e)
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{
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UpdateOpenState(false);
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}
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private void BackgroundOverlay_MouseDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
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{
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CloseDrawer();
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}
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private static void OnIsOpenChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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if (d is CustomDrawer drawer)
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{
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bool newValue = (bool)e.NewValue;
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bool oldValue = (bool)e.OldValue;
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// 如果是从打开到关闭状态，需要触发关闭前事件
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if (oldValue && !newValue)
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{
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bool cancel = drawer.OnClosing();
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if (cancel)
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{
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// 如果取消关闭，则恢复 IsOpen 为 true
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drawer.IsOpen = true;
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return;
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}
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}
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// 更新抽屉状态（动画）
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drawer.UpdateOpenState(true);
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}
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}
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private static void OnDrawerPositionChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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if (d is CustomDrawer drawer)
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{
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drawer.UpdateDrawerPosition();
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drawer.UpdateOpenState(false);
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}
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}
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private void UpdateDrawerPosition()
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{
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if (_drawerContainer == null) return;
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switch (DrawerPosition)
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{
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case DrawerPosition.Left:
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_drawerContainer.HorizontalAlignment = HorizontalAlignment.Left;
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_drawerContainer.VerticalAlignment = VerticalAlignment.Stretch;
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_drawerContainer.Width = OpenWidth;
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_drawerContainer.Height = double.NaN;
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break;
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case DrawerPosition.Right:
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_drawerContainer.HorizontalAlignment = HorizontalAlignment.Right;
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_drawerContainer.VerticalAlignment = VerticalAlignment.Stretch;
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_drawerContainer.Width = OpenWidth;
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_drawerContainer.Height = double.NaN;
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break;
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case DrawerPosition.Top:
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_drawerContainer.HorizontalAlignment = HorizontalAlignment.Stretch;
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_drawerContainer.VerticalAlignment = VerticalAlignment.Top;
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_drawerContainer.Width = double.NaN;
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_drawerContainer.Height = OpenHeight;
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break;
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case DrawerPosition.Bottom:
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_drawerContainer.HorizontalAlignment = HorizontalAlignment.Stretch;
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_drawerContainer.VerticalAlignment = VerticalAlignment.Bottom;
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_drawerContainer.Width = double.NaN;
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_drawerContainer.Height = OpenHeight;
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break;
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}
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}
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private void UpdateOpenState(bool animate)
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{
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if (_drawerContainer == null || _backgroundOverlay == null) return;
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_backgroundOverlay.IsHitTestVisible = IsOpen;
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_drawerContainer.Opacity = 1;
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if (IsOpen)
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{
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Visibility = Visibility.Visible;
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}
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// 每次更新状态时重新应用宽高
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switch (DrawerPosition)
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{
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case DrawerPosition.Left:
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case DrawerPosition.Right:
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_drawerContainer.Width = OpenWidth;
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_drawerContainer.Height = double.NaN;
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break;
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case DrawerPosition.Top:
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case DrawerPosition.Bottom:
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_drawerContainer.Width = double.NaN;
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_drawerContainer.Height = OpenHeight;
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break;
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}
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if (animate)
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{
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// 动画背景遮罩
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DoubleAnimation backgroundAnimation = new DoubleAnimation
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{
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To = IsOpen ? BackgroundOpacity : 0,
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Duration = AnimationDuration
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};
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_backgroundOverlay.BeginAnimation(OpacityProperty, backgroundAnimation);
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// 确保RenderTransform已设置
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if (_drawerContainer.RenderTransform == null || !(_drawerContainer.RenderTransform is TranslateTransform))
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{
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_drawerContainer.RenderTransform = new TranslateTransform();
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}
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TranslateTransform transform = (TranslateTransform)_drawerContainer.RenderTransform;
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// 动画抽屉
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DoubleAnimation drawerAnimation = new DoubleAnimation
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{
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Duration = AnimationDuration,
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// 弹性动画效果
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// EasingFunction = IsOpen
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// ? new BackEase { EasingMode = EasingMode.EaseOut, Amplitude = 0.3 }
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// : new ExponentialEase { EasingMode = EasingMode.EaseIn, Exponent = 6 }
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};
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// 如果是打开操作，在动画完成时触发Opened事件
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if (IsOpen)
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{
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drawerAnimation.Completed += (s, e) => OnOpened();
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}
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switch (DrawerPosition)
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{
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case DrawerPosition.Left:
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// 打开时，先设置初始位置
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if (IsOpen)
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{
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transform.X = -OpenWidth;
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}
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drawerAnimation.To = IsOpen ? 0 : -OpenWidth;
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transform.BeginAnimation(TranslateTransform.XProperty, drawerAnimation);
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break;
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case DrawerPosition.Right:
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// 打开时，先设置初始位置
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if (IsOpen)
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{
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transform.X = OpenWidth;
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}
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drawerAnimation.To = IsOpen ? 0 : OpenWidth;
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transform.BeginAnimation(TranslateTransform.XProperty, drawerAnimation);
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break;
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case DrawerPosition.Top:
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// 打开时，先设置初始位置
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if (IsOpen)
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{
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transform.Y = -OpenHeight;
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}
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drawerAnimation.To = IsOpen ? 0 : -OpenHeight;
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transform.BeginAnimation(TranslateTransform.YProperty, drawerAnimation);
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break;
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case DrawerPosition.Bottom:
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// 打开时，先设置初始位置
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if (IsOpen)
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{
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transform.Y = OpenHeight;
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}
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drawerAnimation.To = IsOpen ? 0 : OpenHeight;
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transform.BeginAnimation(TranslateTransform.YProperty, drawerAnimation);
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break;
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}
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if (!IsOpen)
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{
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drawerAnimation.Completed += (s, e) =>
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{
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if (!IsOpen)
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{
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Visibility = Visibility.Collapsed;
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}
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};
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}
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}
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else
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{
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// 无动画直接设置
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_backgroundOverlay.Opacity = IsOpen ? BackgroundOpacity : 0;
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TranslateTransform transform = new TranslateTransform();
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_drawerContainer.RenderTransform = transform;
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switch (DrawerPosition)
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{
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case DrawerPosition.Left:
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transform.X = IsOpen ? 0 : -OpenWidth;
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break;
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case DrawerPosition.Right:
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transform.X = IsOpen ? 0 : OpenWidth;
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break;
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case DrawerPosition.Top:
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transform.Y = IsOpen ? 0 : -OpenHeight;
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break;
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case DrawerPosition.Bottom:
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transform.Y = IsOpen ? 0 : OpenHeight;
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break;
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}
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Visibility = IsOpen ? Visibility.Visible : Visibility.Collapsed;
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// 如果是无动画模式且正在打开，立即触发Opened事件
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if (IsOpen)
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{
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OnOpened();
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}
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}
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}
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/// <summary>
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/// 关闭抽屉的方法，会触发 Closing 事件并可能被取消
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/// </summary>
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/// <returns>如果成功关闭返回 true，如果被取消返回 false</returns>
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public bool CloseDrawer()
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{
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if (!IsOpen)
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return true;
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if (OnClosing())
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return false;
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IsOpen = false;
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return true;
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}
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}
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public enum DrawerPosition
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{
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Left,
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Right,
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Top,
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Bottom
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} |