Slider样式修改拖动块的大小

原创 已于 2024-06-28 08:07:37 修改 · 336 阅读 · 0 ·
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于 2024-06-28 08:00:51 首次发布

触摸屏手指拖动silder控件时没法修改大小,找了第三方库也没有对应的属性,自己定义一个样式,用作记录防止忘记

样式效果

1.先继承Slider

 public class HsSlider : Slider
 {
     public static readonly DependencyProperty HsThumbWidthProperty;
     public static readonly DependencyProperty HsThumbHeightProperty;
     public static readonly DependencyProperty HsHorizontalRepeatWidthProperty;
     public static readonly DependencyProperty HsHorizontalRepeatHeightProperty;
     public static readonly DependencyProperty HsForegroundProperty;
     public static readonly DependencyProperty HsBackgrondProperty;
     public static readonly DependencyProperty HsValueProperty;
     private static bool _flag = true;

     static HsSlider()
     {
         BrushConverter brushConverter = new BrushConverter();
         HsThumbWidthProperty = DependencyProperty.Register("HsThumbWidth", typeof(double), typeof(HsSlider), new PropertyMetadata(0.0));
         HsThumbHeightProperty = DependencyProperty.Register("HsThumbHeight", typeof(double), typeof(HsSlider), new PropertyMetadata(0.0));
         HsHorizontalRepeatWidthProperty = DependencyProperty.Register("HsHorizontalRepeatWidth", typeof(double), typeof(HsSlider), new PropertyMetadata(10.0));
         HsHorizontalRepeatHeightProperty = DependencyProperty.Register("HsHorizontalRepeatHeight", typeof(double), typeof(HsSlider), new PropertyMetadata(10.0));
         HsForegroundProperty = DependencyProperty.Register("HsForeground", typeof(Brush), typeof(HsSlider), new PropertyMetadata((Brush)brushConverter.ConvertFromString("#1BA3FF")));
         HsBackgrondProperty = DependencyProperty.Register("HsBackgrond", typeof(Brush), typeof(HsSlider), new PropertyMetadata((Brush)brushConverter.ConvertFromString("#eee")));
         HsValueProperty = DependencyProperty.Register("HsValue", typeof(double), typeof(HsSlider), new PropertyMetadata(0.0, new PropertyChangedCallback(ValueChanged)));
     }


     public double HsThumbWidth
     {
         get { return (double)GetValue(HsThumbWidthProperty); }
         set { SetValue(HsThumbWidthProperty, value); }
     }
     public double HsValue
     {
         get { return (double)GetValue(HsValueProperty); }
         set { SetValue(HsValueProperty, value); }
     }

     public double HsThumbHeight
     {
         get { return (double)GetValue(HsThumbHeightProperty); }
         set { SetValue(HsThumbHeightProperty, value); }
     }

     public double HsHorizontalRepeatWidth
     {
         get { return (double)GetValue(HsHorizontalRepeatWidthProperty); }
         set { SetValue(HsHorizontalRepeatWidthProperty, value); }
     }

     public double HsHorizontalRepeatHeight
     {
         get { return (double)GetValue(HsHorizontalRepeatHeightProperty); }
         set { SetValue(HsHorizontalRepeatHeightProperty, value); }
     }

     public Brush HsForeground
     {
         get { return (Brush)GetValue(HsForegroundProperty); }
         set { SetValue(HsForegroundProperty, value); }
     }

     public Brush HsBackgrond
     {
         get { return (Brush)GetValue(HsBackgrondProperty); }
         set { SetValue(HsBackgrondProperty, value); }
     }



     private static void ValueChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
     {
         var slider = d as HsSlider;
         DoubleAnimation doubleAnimation = new DoubleAnimation();
         doubleAnimation.From = slider.Value;
         doubleAnimation.To = double.Parse(e.NewValue.ToString());
         if (_flag)
             doubleAnimation.Duration = new Duration(TimeSpan.FromSeconds(0.3));
         else
             doubleAnimation.Duration = new Duration(TimeSpan.FromSeconds(0));

         slider.BeginAnimation(HsSlider.ValueProperty, doubleAnimation);
     }


     protected override void OnPreviewMouseDown(MouseButtonEventArgs e)
     {
         base.OnPreviewMouseUp(e);
         _flag = false;
     }

     protected override void OnPreviewMouseUp(MouseButtonEventArgs e)
     {
         base.OnPreviewMouseUp(e);
         _flag = true;
     }
 }

2.样式模板修改

   <!--颜色-->
   <Color x:Key="EffectShadowColor">#88000000</Color>
   <DropShadowEffect x:Key="EffectShadow2" BlurRadius="10" ShadowDepth="2" Direction="270" Color="{StaticResource EffectShadowColor}" Opacity=".2" RenderingBias="Performance" />
   <DropShadowEffect x:Key="EffectShadow1"  BlurRadius="8" ShadowDepth="1" Direction="270" Color="{StaticResource EffectShadowColor}" Opacity=".2" RenderingBias="Performance" />
   <!--水平方向的填充色模板-->
   <ControlTemplate  x:Key="HorizontalRepeatButtonTemplate" TargetType="{x:Type RepeatButton}">
       <Rectangle Fill="{TemplateBinding Background}" Height="{Binding HsHorizontalRepeatHeight, RelativeSource={RelativeSource  Mode=FindAncestor, AncestorType=hs:HsSlider}}"/>
   </ControlTemplate>
   <!--垂直方向的填充色模板-->
   <ControlTemplate  x:Key="VerticalRepeatButtonTemplate" TargetType="{x:Type RepeatButton}">
       <Rectangle Fill="{TemplateBinding Background}" Width="{Binding HsHorizontalRepeatWidth, RelativeSource={RelativeSource  Mode=FindAncestor, AncestorType=hs:HsSlider}}"/>
   </ControlTemplate>
   <!--左侧填充-->
   <Style x:Key="RepeatButtonTransparentLeft" TargetType="{x:Type RepeatButton}">
       <Setter Property="OverridesDefaultStyle" Value="true"/>
       <Setter Property="Background" Value="#1BA3FF"/>
       <Setter Property="Focusable" Value="false"/>
       <Setter Property="IsTabStop" Value="false"/>
       <Setter Property="Template" Value="{StaticResource HorizontalRepeatButtonTemplate}"/>
   </Style>
   <!--右侧填充-->
   <Style x:Key="RepeatButtonTransparentRight" TargetType="{x:Type RepeatButton}">
       <Setter Property="OverridesDefaultStyle" Value="true"/>
       <Setter Property="Background" Value="Transparent"/>
       <Setter Property="Focusable" Value="false"/>
       <Setter Property="IsTabStop" Value="false"/>
       <Setter Property="Template" Value="{StaticResource HorizontalRepeatButtonTemplate}"/>
   </Style>

   <!--顶部填充-->
   <Style x:Key="RepeatButtonTransparentTop" TargetType="{x:Type RepeatButton}">
       <Setter Property="OverridesDefaultStyle" Value="true"/>
       <Setter Property="Background" Value="#1BA3FF"/>
       <Setter Property="Focusable" Value="false"/>
       <Setter Property="IsTabStop" Value="false"/>
       <Setter Property="Template" Value="{StaticResource VerticalRepeatButtonTemplate}"/>
   </Style>

   <!--下面填充-->
   <Style x:Key="RepeatButtonTransparentBottom" TargetType="{x:Type RepeatButton}">
       <Setter Property="OverridesDefaultStyle" Value="true"/>
       <Setter Property="Background" Value="Transparent"/>
       <Setter Property="Focusable" Value="false"/>
       <Setter Property="IsTabStop" Value="false"/>
       <Setter Property="Template" Value="{StaticResource VerticalRepeatButtonTemplate}"/>
   </Style>

   <!--滑块样式-->
   <ControlTemplate x:Key="SliderThumbHorizontalDefault" TargetType="{x:Type Thumb}">
       <Grid HorizontalAlignment="Center" UseLayoutRounding="True" VerticalAlignment="Center">
           <Ellipse  x:Name="grip" Fill="White" Width="{TemplateBinding Width}" Height="{TemplateBinding Height}"   SnapsToDevicePixels="True" Stretch="Fill" StrokeThickness="0" Stroke="#1BA3FF"
                Effect="{StaticResource EffectShadow1}" UseLayoutRounding="True" VerticalAlignment="Center"/>
       </Grid>
       <ControlTemplate.Triggers>
           <Trigger Property="IsMouseOver" Value="True">
               <Setter Property="Effect" Value="{StaticResource EffectShadow2}"/>
           </Trigger>
           <EventTrigger RoutedEvent="UIElement.PreviewMouseLeftButtonDown">
               <BeginStoryboard>
                   <Storyboard>
                       <DoubleAnimation Duration="0:0:.1" To="2" Storyboard.TargetName="grip" Storyboard.TargetProperty="StrokeThickness"  />
                   </Storyboard>
               </BeginStoryboard>
           </EventTrigger>
           <EventTrigger RoutedEvent="UIElement.PreviewMouseLeftButtonUp">
               <BeginStoryboard>
                   <Storyboard>
                       <DoubleAnimation Duration="0:0:.1" To="0" Storyboard.TargetName="grip" Storyboard.TargetProperty="StrokeThickness" />
                   </Storyboard>
               </BeginStoryboard>
           </EventTrigger>

       </ControlTemplate.Triggers>
   </ControlTemplate>


   <!--垂直方向-->
   <ControlTemplate x:Key="SliderThumbVerticalDefault" TargetType="{x:Type Thumb}">
       <Grid HorizontalAlignment="Center" UseLayoutRounding="True" VerticalAlignment="Center">
           <Ellipse  x:Name="grip" Fill="White" Width="{TemplateBinding Width}" Height="{TemplateBinding Height}"   SnapsToDevicePixels="True" Stretch="Fill" StrokeThickness="0" Stroke="#1BA3FF"
                 Effect="{StaticResource EffectShadow1}" UseLayoutRounding="True" VerticalAlignment="Center"/>
       </Grid>
       <ControlTemplate.Triggers>
           <Trigger Property="IsMouseOver" Value="True">
               <Setter Property="Effect" Value="{StaticResource EffectShadow2}"/>
           </Trigger>
           <EventTrigger RoutedEvent="UIElement.PreviewMouseLeftButtonDown">
               <BeginStoryboard>
                   <Storyboard>
                       <DoubleAnimation Duration="0:0:.1" To="2" Storyboard.TargetName="grip" Storyboard.TargetProperty="StrokeThickness"  />
                   </Storyboard>
               </BeginStoryboard>
           </EventTrigger>
           <EventTrigger RoutedEvent="UIElement.PreviewMouseLeftButtonUp">
               <BeginStoryboard>
                   <Storyboard>
                       <DoubleAnimation Duration="0:0:.1" To="0" Storyboard.TargetName="grip" Storyboard.TargetProperty="StrokeThickness" />
                   </Storyboard>
               </BeginStoryboard>
           </EventTrigger>
       </ControlTemplate.Triggers>
   </ControlTemplate>

   <!--slider 水平样式-->
   <ControlTemplate x:Key="SliderHorizontal" TargetType="{x:Type Slider}">
       <Border x:Name="border" VerticalAlignment="Center" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" SnapsToDevicePixels="True">
           <Grid>
               <Grid.RowDefinitions>
                   <RowDefinition Height="Auto"/>
                   <RowDefinition Height="Auto" MinHeight="{TemplateBinding MinHeight}"/>
                   <RowDefinition Height="Auto"/>
               </Grid.RowDefinitions>
               <TickBar x:Name="TopTick" Fill="{TemplateBinding Foreground}" Height="4" Margin="0,0,0,2" Placement="Top" Grid.Row="0" Visibility="Collapsed"/>
               <TickBar x:Name="BottomTick" Fill="{TemplateBinding Foreground}" Height="4" Margin="0,2,0,0" Placement="Bottom" Grid.Row="2" Visibility="Collapsed"/>
               <Border x:Name="TrackBackground" Background="Transparent" BorderBrush="Transparent" BorderThickness="1" Height="4.0" Margin="5,0" Grid.Row="1" VerticalAlignment="center">
                   <Canvas Margin="-6,-1" >
                       <Rectangle x:Name="PART_SelectionRange" Fill="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}" Height="4.0"/>
                   </Canvas>
               </Border>
               <Track x:Name="PART_Track" Grid.Row="1">
                   <Track.DecreaseRepeatButton>
                       <!--滑动块左侧-->
                       <RepeatButton Command="{x:Static Slider.DecreaseLarge}" Style="{StaticResource RepeatButtonTransparentLeft}"   SnapsToDevicePixels="True"
                                    Background="{Binding Path=HsForeground,  RelativeSource={RelativeSource  Mode=TemplatedParent}}" />
                   </Track.DecreaseRepeatButton>
                   <Track.IncreaseRepeatButton>
                       <!--滑动块右侧-->
                       <RepeatButton Command="{x:Static Slider.IncreaseLarge}" Style="{StaticResource RepeatButtonTransparentRight}"  SnapsToDevicePixels="True" 
                                  Background="{Binding Path=HsBackgrond,  RelativeSource={RelativeSource  Mode=TemplatedParent}}"/>

                   </Track.IncreaseRepeatButton>
                   <Track.Thumb>
                       <Thumb x:Name="Thumb" Focusable="False"   Margin="-1,0,0,0"  SnapsToDevicePixels="True"
                        Height="{Binding Path=HsThumbHeight,  RelativeSource={RelativeSource  Mode=TemplatedParent}}" 
                        Width="{Binding Path=HsThumbWidth,  RelativeSource={RelativeSource  Mode=TemplatedParent}}"
                        OverridesDefaultStyle="True" Template="{StaticResource SliderThumbHorizontalDefault}" VerticalAlignment="Center" />
                   </Track.Thumb>
               </Track>
           </Grid>
       </Border>
       <ControlTemplate.Triggers>
           <Trigger Property="IsSelectionRangeEnabled" Value="true">
               <Setter Property="Visibility" TargetName="PART_SelectionRange" Value="Visible"/>
           </Trigger>
           <Trigger Property="IsKeyboardFocused" Value="true">
               <Setter Property="Foreground" TargetName="Thumb" Value="Blue"/>
           </Trigger>
       </ControlTemplate.Triggers>
   </ControlTemplate>

   <!--silder垂直方向控件模板-->
   <ControlTemplate x:Key="SliderVertical" TargetType="{x:Type Slider}">
       <Border x:Name="border" HorizontalAlignment="Center"  Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" SnapsToDevicePixels="True">
           <Grid>
               <Grid.ColumnDefinitions>
                   <ColumnDefinition Width="Auto"/>
                   <ColumnDefinition MinWidth="{TemplateBinding MinWidth}" Width="Auto"/>
                   <ColumnDefinition Width="Auto"/>
               </Grid.ColumnDefinitions>
               <TickBar x:Name="TopTick" Grid.Column="0" Fill="{TemplateBinding Foreground}" Margin="0,0,2,0" Placement="Left" Visibility="Collapsed" Width="4"/>
               <TickBar x:Name="BottomTick" Grid.Column="2" Fill="{TemplateBinding Foreground}" Margin="2,0,0,0" Placement="Right" Visibility="Collapsed" Width="4"/>
               <Border x:Name="TrackBackground" Background="Transparent" BorderBrush="Transparent" BorderThickness="1" Grid.Column="1" HorizontalAlignment="center" Margin="0,5" Width="4.0">
                   <Canvas Margin="-1,-6">
                       <Rectangle x:Name="PART_SelectionRange" Fill="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}" Visibility="Hidden" Width="4.0"/>
                   </Canvas>
               </Border>
               <Track x:Name="PART_Track" Grid.Column="1">
                   <Track.DecreaseRepeatButton>
                       <RepeatButton Command="{x:Static Slider.DecreaseLarge}" Style="{StaticResource RepeatButtonTransparentTop}"
                                  Background="{Binding Path=HsForeground, RelativeSource={RelativeSource  Mode=TemplatedParent}}"/>
                   </Track.DecreaseRepeatButton>
                   <Track.IncreaseRepeatButton>

                       <RepeatButton Command="{x:Static Slider.IncreaseLarge}"  Style="{StaticResource RepeatButtonTransparentBottom}"
                                   Background="{Binding Path=HsBackgrond, RelativeSource={RelativeSource Mode=TemplatedParent}}" />
                   </Track.IncreaseRepeatButton>
                   <Track.Thumb>
                       <Thumb x:Name="Thumb" Focusable="False" OverridesDefaultStyle="True" Template="{StaticResource SliderThumbVerticalDefault}" VerticalAlignment="Top" 
                                Height="{Binding Path=HsThumbHeight, RelativeSource={RelativeSource  Mode=TemplatedParent}}" 
                                Width="{Binding Path=HsThumbWidth, RelativeSource={RelativeSource  Mode=TemplatedParent}}"/>
                   </Track.Thumb>
               </Track>
           </Grid>
       </Border>
       <ControlTemplate.Triggers>
           <Trigger Property="IsSelectionRangeEnabled" Value="true">
               <Setter Property="Visibility" TargetName="PART_SelectionRange" Value="Visible"/>
           </Trigger>
           <Trigger Property="IsKeyboardFocused" Value="true">
               <Setter Property="Foreground" TargetName="Thumb" Value="Blue"/>
           </Trigger>
       </ControlTemplate.Triggers>
   </ControlTemplate>


   <Style x:Key="CusSliderStyle" TargetType="{x:Type hs:HsSlider}">
       <Setter Property="Stylus.IsPressAndHoldEnabled" Value="false"/>
       <Setter Property="Background" Value="Transparent"/>
       <Setter Property="BorderBrush" Value="Transparent"/>

       <Setter Property="Template" Value="{StaticResource SliderHorizontal}"/>
       <Style.Triggers>
           <Trigger Property="Orientation" Value="Vertical">
               <Setter Property="Template" Value="{StaticResource SliderVertical}"/>
           </Trigger>
       </Style.Triggers>
   </Style>
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