support for .NET framework 3.5
Still have bugs
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using System;
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using System.Collections.Generic;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Input;
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using System.Windows.Media;
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using HandyControl.Data;
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using HandyControl.Interactivity;
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using HandyControl.Tools;
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namespace HandyControl.Controls
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{
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/// <summary>
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/// 时间条
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/// </summary>
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[TemplatePart(Name = ElementBorderTop, Type = typeof(Border))]
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[TemplatePart(Name = ElementTextBlockMove, Type = typeof(TextBlock))]
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[TemplatePart(Name = ElementTextBlockSelected, Type = typeof(TextBlock))]
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[TemplatePart(Name = ElementCanvasSpe, Type = typeof(Canvas))]
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public class TimeBar : Control
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{
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#region Constants
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private const string ElementBorderTop = "PART_BorderTop";
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private const string ElementTextBlockMove = "PART_TextBlockMove";
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private const string ElementTextBlockSelected = "PART_TextBlockSelected";
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private const string ElementCanvasSpe = "PART_CanvasSpe";
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#endregion Constants
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#region Data
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private Border _borderTop;
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private TextBlock _textBlockMove;
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private TextBlock _textBlockSelected;
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private Canvas _canvasSpe;
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#endregion Data
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/// <summary>
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/// 是否显示刻度字符串
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/// </summary>
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public static readonly DependencyProperty ShowSpeStrProperty = DependencyProperty.Register(
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"ShowSpeStr", typeof(bool), typeof(TimeBar), new PropertyMetadata(ValueBoxes.FalseBox));
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public static readonly DependencyProperty TimeFormatProperty = DependencyProperty.Register(
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"TimeFormat", typeof(string), typeof(TimeBar), new PropertyMetadata("yyyy-MM-dd HH:mm:ss"));
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public string TimeFormat
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{
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get => (string) GetValue(TimeFormatProperty);
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set => SetValue(TimeFormatProperty, value);
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}
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/// <summary>
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/// 刻度字符串
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/// </summary>
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internal static readonly DependencyProperty SpeStrProperty = DependencyProperty.Register(
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"SpeStr", typeof(string), typeof(TimeBar), new PropertyMetadata(Properties.Langs.Lang.Interval1h));
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/// <summary>
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/// 选中时间
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/// </summary>
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internal static readonly DependencyProperty SelectedTimeProperty = DependencyProperty.Register(
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"SelectedTime", typeof(DateTime), typeof(TimeBar), new PropertyMetadata(default(DateTime), OnSelectedTimeChanged));
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private static void OnSelectedTimeChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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if (d is TimeBar timeBar && timeBar._textBlockSelected != null)
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{
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timeBar._textBlockSelected.Text = ((DateTime) e.NewValue).ToString(timeBar.TimeFormat);
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}
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}
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/// <summary>
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/// 时间改变事件
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/// </summary>
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public static readonly RoutedEvent TimeChangedEvent =
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EventManager.RegisterRoutedEvent("TimeChanged", RoutingStrategy.Bubble,
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typeof(EventHandler<FunctionEventArgs<DateTime>>), typeof(TimeBar));
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/// <summary>
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/// 刻度集合
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/// </summary>
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private readonly List<SpeTextBlock> _speBlockList = new List<SpeTextBlock>();
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/// <summary>
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/// 初始化时时间
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/// </summary>
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private readonly DateTime _starTime;
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/// <summary>
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/// 时间段集合
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/// </summary>
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private readonly List<int> _timeSpeList = new List<int>
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{
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7200000,
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3600000,
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1800000,
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600000,
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300000,
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60000,
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30000
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};
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/// <summary>
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/// 顶部border是否被按下
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/// </summary>
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private bool _borderTopIsMouseLeftButtonDown;
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/// <summary>
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/// 控件是否处于拖动中
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/// </summary>
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private bool _isDragging;
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/// <summary>
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/// 刻度单项宽度
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/// </summary>
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private double _itemWidth;
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/// <summary>
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/// 鼠标按下拖动时选中的时间
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/// </summary>
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private DateTime _mouseDownTime;
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/// <summary>
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/// 显示的刻度数目
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/// </summary>
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private int _speCount = 13;
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/// <summary>
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/// 刻度区间编号
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/// </summary>
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private int _speIndex = 1;
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/// <summary>
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/// 刻度单次偏移
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/// </summary>
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private double _tempOffsetX;
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/// <summary>
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/// 刻度总偏移
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/// </summary>
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private double _totalOffsetX;
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private readonly bool _isLoaded;
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public TimeBar()
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{
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_starTime = DateTime.Now;
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SelectedTime = new DateTime(_starTime.Year, _starTime.Month, _starTime.Day, 0, 0, 0);
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_starTime = SelectedTime;
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_isLoaded = true;
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SizeChanged += TimeBar_OnSizeChanged;
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MouseMove += TimeBar_OnMouseMove;
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}
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public override void OnApplyTemplate()
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{
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if (_borderTop != null)
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{
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_borderTop.MouseLeftButtonDown -= BorderTop_OnMouseLeftButtonDown;
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_borderTop.PreviewMouseLeftButtonUp -= BorderTop_OnPreviewMouseLeftButtonUp;
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}
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base.OnApplyTemplate();
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_borderTop = GetTemplateChild(ElementBorderTop) as Border;
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_textBlockMove = GetTemplateChild(ElementTextBlockMove) as TextBlock;
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_textBlockSelected = GetTemplateChild(ElementTextBlockSelected) as TextBlock;
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_canvasSpe = GetTemplateChild(ElementCanvasSpe) as Canvas;
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CheckNull();
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_borderTop.MouseLeftButtonDown += BorderTop_OnMouseLeftButtonDown;
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_borderTop.PreviewMouseLeftButtonUp += BorderTop_OnPreviewMouseLeftButtonUp;
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var behavior = new MouseDragElementBehaviorEx
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{
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LockY = true,
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};
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behavior.DragBegun += DragElementBehavior_OnDragBegun;
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behavior.Dragging += MouseDragElementBehavior_OnDragging;
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behavior.DragFinished += MouseDragElementBehavior_OnDragFinished;
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var collection = Interaction.GetBehaviors(_borderTop);
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collection.Add(behavior);
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if (_isLoaded)
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{
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TimeBar_OnSizeChanged(null, null);
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}
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_textBlockSelected.Text = SelectedTime.ToString(TimeFormat);
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}
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private void CheckNull()
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{
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if (_borderTop == null || _textBlockMove == null|| _textBlockSelected == null || _canvasSpe == null) throw new Exception();
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}
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/// <summary>
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/// 是否显示刻度字符串
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/// </summary>
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public bool ShowSpeStr
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{
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get => (bool)GetValue(ShowSpeStrProperty);
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set => SetValue(ShowSpeStrProperty, value);
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}
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/// <summary>
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/// 刻度字符串
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/// </summary>
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internal string SpeStr
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{
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get => (string)GetValue(SpeStrProperty);
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set => SetValue(SpeStrProperty, value);
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}
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/// <summary>
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/// 选中时间
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/// </summary>
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internal DateTime SelectedTime
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{
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get => (DateTime)GetValue(SelectedTimeProperty);
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set => SetValue(SelectedTimeProperty, value);
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}
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/// <summary>
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/// 刻度区间编号
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/// </summary>
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public int SpeIndex
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{
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get => _speIndex;
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private set
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{
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if (_speIndex == value) return;
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if (value < 0)
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{
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SpeStr = Properties.Langs.Lang.Interval2h;
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_speIndex = 0;
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return;
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}
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if (value > 6)
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{
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SpeStr = Properties.Langs.Lang.Interval30s;
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_speIndex = 6;
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return;
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}
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SetSpeTimeFormat("HH:mm");
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switch (value)
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{
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case 0:
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SpeStr = Properties.Langs.Lang.Interval2h;
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break;
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case 1:
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SpeStr = Properties.Langs.Lang.Interval1h;
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break;
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case 2:
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SpeStr = Properties.Langs.Lang.Interval30m;
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break;
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case 3:
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SpeStr = Properties.Langs.Lang.Interval10m;
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break;
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case 4:
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SpeStr = Properties.Langs.Lang.Interval5m;
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break;
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case 5:
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SpeStr = Properties.Langs.Lang.Interval1m;
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break;
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case 6:
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SetSpeTimeFormat("HH:mm:ss");
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SpeStr = Properties.Langs.Lang.Interval30s;
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break;
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}
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_speIndex = value;
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}
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}
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/// <summary>
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/// 时间改变事件
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/// </summary>
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public event EventHandler<FunctionEventArgs<DateTime>> TimeChanged
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{
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add => AddHandler(TimeChangedEvent, value);
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remove => RemoveHandler(TimeChangedEvent, value);
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}
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/// <summary>
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/// 设置刻度时间格式
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/// </summary>
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/// <param name="format"></param>
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private void SetSpeTimeFormat(string format)
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{
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foreach (var item in _speBlockList)
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item.TimeFormat = format;
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}
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/// <summary>
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/// 设置显示的时间
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/// </summary>
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/// <param name="time"></param>
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public void SetShowTime(DateTime time)
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{
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if (_isDragging || _borderTopIsMouseLeftButtonDown) return;
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SelectedTime = time;
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_totalOffsetX = (_starTime - SelectedTime).TotalMilliseconds / _timeSpeList[SpeIndex] * _itemWidth;
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Update();
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TimeBar_OnMouseMove(null, null);
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}
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/// <summary>
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/// 更新
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/// </summary>
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private void Update()
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{
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var rest = (_totalOffsetX + _tempOffsetX) % _itemWidth;
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for (var i = 0; i < _speCount; i++)
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{
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var item = _speBlockList[i];
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item.MoveX(rest + (_itemWidth - item.Width) / 2);
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}
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var sub = rest <= 0 ? _speCount / 2 : _speCount / 2 - 1;
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for (var i = 0; i < _speCount; i++)
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_speBlockList[i].Time = TimeConvert(SelectedTime).AddMilliseconds((i - sub) * _timeSpeList[_speIndex]);
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}
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/// <summary>
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/// 时间转换
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/// </summary>
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/// <param name="time"></param>
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/// <returns></returns>
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private DateTime TimeConvert(DateTime time)
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{
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switch (_speIndex)
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{
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case 0:
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return new DateTime(time.Year, time.Month, time.Day, time.Hour / 2 * 2, 0, 0);
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case 1:
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return new DateTime(time.Year, time.Month, time.Day, time.Hour, 0, 0);
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case 2:
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return new DateTime(time.Year, time.Month, time.Day, time.Hour, time.Minute / 30 * 30, 0);
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case 3:
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return new DateTime(time.Year, time.Month, time.Day, time.Hour, time.Minute / 10 * 10, 0);
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case 4:
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return new DateTime(time.Year, time.Month, time.Day, time.Hour, time.Minute / 5 * 5, 0);
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case 5:
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return new DateTime(time.Year, time.Month, time.Day, time.Hour, time.Minute, 0);
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case 6:
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return new DateTime(time.Year, time.Month, time.Day, time.Hour, time.Minute, time.Second / 30 * 30);
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default:
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return time;
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}
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}
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/// <summary>
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/// 鼠标滚轮滚动时改变刻度区间
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/// </summary>
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/// <param name="e"></param>
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protected override void OnMouseWheel(MouseWheelEventArgs e)
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{
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base.OnMouseWheel(e);
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if (Mouse.LeftButton == MouseButtonState.Pressed) return;
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SpeIndex += e.Delta > 0 ? 1 : -1;
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_totalOffsetX = (_starTime - SelectedTime).TotalMilliseconds / _timeSpeList[SpeIndex] * _itemWidth;
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Update();
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TimeBar_OnMouseMove(null, null);
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e.Handled = true;
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}
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private void MouseDragElementBehavior_OnDragging(object sender, MouseEventArgs e)
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{
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_isDragging = true;
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_tempOffsetX = _borderTop.RenderTransform.Value.OffsetX;
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SelectedTime = _mouseDownTime -
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TimeSpan.FromMilliseconds(_tempOffsetX / _itemWidth * _timeSpeList[_speIndex]);
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Update();
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_borderTopIsMouseLeftButtonDown = false;
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}
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private void MouseDragElementBehavior_OnDragFinished(object sender, MouseEventArgs e)
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{
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_tempOffsetX = 0;
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_totalOffsetX = (_totalOffsetX + _borderTop.RenderTransform.Value.OffsetX) % ActualWidth;
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_borderTop.RenderTransform = new TranslateTransform();
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RaiseEvent(new FunctionEventArgs<DateTime>(TimeChangedEvent, this)
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{
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Info = SelectedTime
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});
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_isDragging = false;
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}
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private void DragElementBehavior_OnDragBegun(object sender, MouseEventArgs e) => _mouseDownTime = SelectedTime;
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private void TimeBar_OnSizeChanged(object sender, SizeChangedEventArgs e)
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{
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_speBlockList.Clear();
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_canvasSpe.Children.Clear();
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_speCount = (int)(ActualWidth / 800 * 9) | 1;
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var itemWidthOld = _itemWidth;
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_itemWidth = ActualWidth / _speCount;
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_totalOffsetX = _itemWidth / itemWidthOld * _totalOffsetX % ActualWidth;
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if (double.IsNaN(_totalOffsetX))
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_totalOffsetX = 0;
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var rest = (_totalOffsetX + _tempOffsetX) % _itemWidth;
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var sub = rest <= 0 || double.IsNaN(rest) ? _speCount / 2 : _speCount / 2 - 1;
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for (var i = 0; i < _speCount; i++)
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{
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var block = new SpeTextBlock
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{
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Time = TimeConvert(SelectedTime).AddMilliseconds((i - sub) * _timeSpeList[_speIndex]),
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TextAlignment = TextAlignment.Center,
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TimeFormat = "HH:mm"
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};
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_speBlockList.Add(block);
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_canvasSpe.Children.Add(block);
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}
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if (_speIndex == 6)
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SetSpeTimeFormat("HH:mm:ss");
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ShowSpeStr = ActualWidth > 320;
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for (var i = 0; i < _speCount; i++)
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{
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var item = _speBlockList[i];
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item.X = _itemWidth * i;
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item.MoveX((_itemWidth - item.Width) / 2);
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}
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Update();
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TimeBar_OnMouseMove(null, null);
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}
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private void TimeBar_OnMouseMove(object sender, MouseEventArgs e)
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{
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var p = Mouse.GetPosition(this);
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var mlliseconds = (p.X - ActualWidth / 2) / _itemWidth * _timeSpeList[_speIndex];
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if (double.IsInfinity(mlliseconds)) return;
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_textBlockMove.Text = mlliseconds < 0
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? (SelectedTime - TimeSpan.FromMilliseconds(-mlliseconds)).ToString(TimeFormat)
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: (SelectedTime + TimeSpan.FromMilliseconds(mlliseconds)).ToString(TimeFormat);
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_textBlockMove.Margin = new Thickness(p.X - _textBlockMove.ActualWidth / 2, 2, 0, 0);
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}
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private void BorderTop_OnMouseLeftButtonDown(object sender, MouseButtonEventArgs e) => _borderTopIsMouseLeftButtonDown = true;
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private void BorderTop_OnPreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
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{
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if (_borderTopIsMouseLeftButtonDown)
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{
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_borderTopIsMouseLeftButtonDown = false;
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var p = Mouse.GetPosition(this);
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_tempOffsetX = ActualWidth / 2 - p.X;
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SelectedTime -= TimeSpan.FromMilliseconds(_tempOffsetX / _itemWidth * _timeSpeList[_speIndex]);
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Update();
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_totalOffsetX = (_totalOffsetX + _tempOffsetX) % ActualWidth;
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_tempOffsetX = 0;
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TimeBar_OnMouseMove(null, null);
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RaiseEvent(new FunctionEventArgs<DateTime>(TimeChangedEvent, this)
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{
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Info = SelectedTime
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});
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}
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}
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}
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}
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Block a user