189 lines
7.6 KiB
VB.net
189 lines
7.6 KiB
VB.net
Public Class MySlider
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'基础
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Public Uuid As Integer = GetUuid()
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Public Event Change(sender As Object, user As Boolean)
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Public Event PreviewChange(sender As Object, e As RouteEventArgs)
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'自定义属性
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Private _MaxValue As Integer = 100
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Public Property MaxValue As Integer
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Get
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Return _MaxValue
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End Get
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Set(value As Integer)
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If value = _MaxValue Then Exit Property
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_MaxValue = value
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RefreshWidth(Nothing, Nothing)
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End Set
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End Property
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Private ChangeByKey As Boolean = False
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Private _Value As Integer = 0
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Public Property Value As Integer
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Get
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Return _Value
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End Get
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Set(newValue As Integer)
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Try
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newValue = MathRange(newValue, 0, MaxValue)
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If _Value = newValue Then Exit Property
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'触发 Preview 事件，修改新值
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Dim OldValue = _Value
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_Value = newValue
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If AniControlEnabled = 0 Then
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Dim e = New RouteEventArgs(False)
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RaiseEvent PreviewChange(Me, e)
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If e.Handled Then
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_Value = OldValue
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DragStop()
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Exit Property
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End If
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End If
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If IsLoaded AndAlso AniControlEnabled = 0 Then
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If ActualWidth < ShapeDot.Width Then Exit Property
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Dim NewWidth As Double = _Value / MaxValue * (ActualWidth - ShapeDot.Width)
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Dim DeltaProcess As Double = Math.Abs(LineFore.Width / (ActualWidth - ShapeDot.Width) - _Value / MaxValue)
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Dim Time As Double = (1 - Math.Pow(1 - DeltaProcess, 3)) * 300 + If(ChangeByKey, 100, 0)
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AniStart({
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AaWidth(LineFore, Math.Max(0, NewWidth + If(NewWidth < 0.5, 0, 0.5)) - LineFore.Width, Time,, If(Time > 50, New AniEaseOutFluent, New AniEaseLinear)),
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AaWidth(LineBack, Math.Max(0, ActualWidth - ShapeDot.Width - NewWidth + If(ActualWidth - ShapeDot.Width - NewWidth < 0.5, 0, 0.5)) - LineBack.Width, Time,, If(Time > 50, New AniEaseOutFluent, New AniEaseLinear)),
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AaX(ShapeDot, NewWidth - ShapeDot.Margin.Left, Time,, If(Time > 50, New AniEaseOutFluent, New AniEaseLinear))
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}, "MySlider Progress " & Uuid)
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Else
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RefreshWidth(Nothing, Nothing)
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End If
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If AniControlEnabled = 0 Then RaiseEvent Change(Me, False)
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Catch ex As Exception
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Log(ex, "滑动条进度改变出错", LogLevel.Hint)
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End Try
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End Set
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End Property
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Private Sub RefreshWidth(sender As Object, e As SizeChangedEventArgs) Handles Me.SizeChanged
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If Not IsNothing(e) Then PanMain.Width = e.NewSize.Width
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AniStop("MySlider Progress " & Uuid)
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Dim NewWidth As Double = _Value / MaxValue * (ActualWidth - ShapeDot.Width)
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LineFore.Width = Math.Max(0, NewWidth + If(NewWidth < 0.5, 0, 0.5))
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LineBack.Width = Math.Max(0, ActualWidth - ShapeDot.Width - NewWidth + If(ActualWidth - ShapeDot.Width - NewWidth < 0.5, 0, 0.5))
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SetLeft(ShapeDot, NewWidth)
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End Sub
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'拖动
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Public GetHintText As [Delegate]
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Private Sub DragStart(sender As Object, e As MouseButtonEventArgs) Handles Me.MouseLeftButtonDown
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e.Handled = True '防止 ScrollViewer 失焦问题
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DragControl = Me
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RefreshColor()
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FrmMain.DragDoing()
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AniStart({
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AaScaleTransform(ShapeDot, 1.3 - CType(ShapeDot.RenderTransform, ScaleTransform).ScaleX, 40,, New AniEaseOutFluent)
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}, "MySlider Scale " & Uuid)
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'更新 Popup
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If GetHintText IsNot Nothing Then
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TextHint.Text = GetHintText.DynamicInvoke(Value)
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Popup.IsOpen = True
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AniStop("MySlider KeyPopup " & Uuid)
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End If
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End Sub
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Public Sub DragDoing()
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Dim Percent As Double = MathRange((Mouse.GetPosition(PanMain).X - ShapeDot.Width / 2) / (ActualWidth - ShapeDot.Width), 0, 1)
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Dim NewValue As Integer = Percent * MaxValue
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If Not NewValue = Value Then
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Value = NewValue
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End If
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'更新 Popup
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If GetHintText IsNot Nothing Then TextHint.Text = GetHintText.DynamicInvoke(NewValue)
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End Sub
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Public Sub DragStop()
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RefreshColor()
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AniStart({
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AaScaleTransform(ShapeDot, 1 - CType(ShapeDot.RenderTransform, ScaleTransform).ScaleX, 200,, New AniEaseOutFluent)
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}, "MySlider Scale " & Uuid)
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If GetHintText IsNot Nothing Then Popup.IsOpen = False
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End Sub
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'指向动画
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Private Sub RefreshColor() Handles Me.IsEnabledChanged, Me.MouseEnter, Me.MouseLeave
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Try
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'判断当前颜色
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Dim ForegroundName As String, DotFillName As String
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Dim AnimationTime As Integer
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If IsEnabled Then
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If Not IsNothing(DragControl) AndAlso DragControl.Equals(Me) Then
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ForegroundName = "ColorBrush3"
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DotFillName = "ColorBrush3"
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AnimationTime = 40
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ElseIf IsMouseOver Then
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ForegroundName = "ColorBrush3"
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DotFillName = "ColorBrush3"
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AnimationTime = 40
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Else
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ForegroundName = "ColorBrushBg0"
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DotFillName = "ColorBrushBg0"
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AnimationTime = 100
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End If
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Else
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ForegroundName = "ColorBrushGray5"
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DotFillName = "ColorBrushGray5"
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AnimationTime = 200
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End If
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'触发颜色动画
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If IsLoaded AndAlso AniControlEnabled = 0 Then '防止默认属性变更触发动画
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'有动画
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AniStart({
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AaColor(Me, BorderBrushProperty, ForegroundName, AnimationTime),
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AaColor(ShapeDot, Ellipse.FillProperty, DotFillName, AnimationTime)
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}, "MySlider Color " & Uuid)
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Else
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'无动画
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AniStop("MySlider Color " & Uuid)
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SetResourceReference(BorderBrushProperty, ForegroundName)
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ShapeDot.SetResourceReference(Ellipse.FillProperty, DotFillName)
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End If
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Catch ex As Exception
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Log(ex, "滑动条颜色改变出错")
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End Try
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End Sub
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'按键改变
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Public Property ValueByKey As UInteger = 1
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Private Sub MySlider_MouseEnter() Handles Me.MouseEnter
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Focus() '确保按键能改变值
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End Sub
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Private Sub MySlider_KeyDown(sender As Object, e As KeyEventArgs) Handles Me.KeyDown
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'拒绝一边拖动一边用按键改变
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If ReferenceEquals(Me, DragControl) Then Exit Sub
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'改变值
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If e.Key = Key.Left Then
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ChangeByKey = True
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Value -= ValueByKey
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ChangeByKey = False
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e.Handled = True
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ElseIf e.Key = Key.Right Then
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ChangeByKey = True
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Value += ValueByKey
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ChangeByKey = False
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e.Handled = True
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Else
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Exit Sub
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End If
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'更新 Popup
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If GetHintText IsNot Nothing Then
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TextHint.Text = GetHintText.DynamicInvoke(Value)
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Popup.IsOpen = True
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AniStop("MySlider KeyPopup " & Uuid)
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AniStart(AaCode(Sub() Popup.IsOpen = False, 700 * AniSpeed), "MySlider KeyPopup " & Uuid)
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End If
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End Sub
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End Class |