WPF 自定义滚动条（ScrollView、ScrollBar）样式

一、滚动条基本样式

本次修改Scrollview及ScrollBar滚动条样式是通过纯样式实现的。修改的内容包含滚动条的颜色，上下按钮的隐藏。另外添加了鼠标经过滚动条动画。

style样式如下：

<!-- ScrollViewer 滚动条 -->
    <Style x:Key="ScrollBarThumb" TargetType="{x:Type Thumb}">
        <Setter Property="OverridesDefaultStyle" Value="true"/>
        <Setter Property="IsTabStop" Value="false"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type Thumb}">
                    <Grid>
                        <!--滚动条颜色-->
                        <Border Background="#646465" CornerRadius="3"/>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <Style x:Key="HorizontalScrollBarPageButton" 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="Opacity" Value="0.2"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type RepeatButton}">
                    <Rectangle Fill="{TemplateBinding Background}" Width="{TemplateBinding Width}" Height="{TemplateBinding Height}"/>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <Style x:Key="VerticalScrollBarPageButton" 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="Opacity" Value="0.2"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type RepeatButton}">
                    <Rectangle Fill="{TemplateBinding Background}" Width="{TemplateBinding Width}" Height="{TemplateBinding Height}"/>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <!--滚动条上下按钮-->
    <Style x:Key="VerticalScrollBarPageButton2" 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="Opacity"  Value="0"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type RepeatButton}">
                    <Rectangle Fill="#90000000" Width="0" Height="0"/>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <Style x:Key="for_scrollbar" TargetType="{x:Type ScrollBar}">
        <Setter Property="Stylus.IsPressAndHoldEnabled" Value="false"/>
        <Setter Property="Stylus.IsFlicksEnabled" Value="false"/>
        <Setter Property="Background" Value="Transparent"/>
        <Setter Property="Margin" Value="0,1,1,6"/>
        <Setter Property="Width"  Value="10"/>
        <Setter Property="MinWidth"  Value="5"/>
        <Setter Property="Opacity"   Value="0.2"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ScrollBar}">
                    <Grid x:Name="Bg" SnapsToDevicePixels="true">
                        <Grid.RowDefinitions>
                            <RowDefinition Height="auto"></RowDefinition>
                            <RowDefinition Height="*"></RowDefinition>
                            <RowDefinition Height="auto"></RowDefinition>
                        </Grid.RowDefinitions>
                        <RepeatButton  Grid.Row="0" Style="{StaticResource VerticalScrollBarPageButton2}" Command="{x:Static ScrollBar.PageUpCommand}"/>
                        <Track x:Name="PART_Track"   Grid.Row="1" IsEnabled="{TemplateBinding IsMouseOver}" IsDirectionReversed="true">
                            <Track.DecreaseRepeatButton>
                                <RepeatButton Style="{StaticResource VerticalScrollBarPageButton}" Command="{x:Static ScrollBar.PageUpCommand}"/>
                            </Track.DecreaseRepeatButton>
                            <Track.IncreaseRepeatButton>
                                <RepeatButton Style="{StaticResource VerticalScrollBarPageButton}" Command="{x:Static ScrollBar.PageDownCommand}"/>
                            </Track.IncreaseRepeatButton>
                            <Track.Thumb>
                                <Thumb Style="{StaticResource ScrollBarThumb}"/>
                            </Track.Thumb>
                        </Track>
                        <RepeatButton Grid.Row="2" Style="{StaticResource VerticalScrollBarPageButton2}" Command="{x:Static ScrollBar.PageDownCommand}"/>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
        <Style.Triggers>
            <Trigger Property="Orientation" Value="Horizontal">
                <Setter Property="Background"  Value="Transparent"/>
                <Setter Property="Margin" Value="1,0,6,1"/>
                <Setter Property="Height"   Value="5"/>
                <Setter Property="MinHeight"  Value="5"/>
                <Setter Property="Width"    Value="Auto"/>
                <Setter Property="Opacity" Value="0.2"/>
                <Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="{x:Type ScrollBar}">
                            <Grid x:Name="Bg" SnapsToDevicePixels="true">
                                <Track x:Name="PART_Track" IsEnabled="{TemplateBinding IsMouseOver}">
                                    <Track.DecreaseRepeatButton>
                                        <RepeatButton Style="{StaticResource HorizontalScrollBarPageButton}"  Command="{x:Static ScrollBar.PageLeftCommand}"/>
                                    </Track.DecreaseRepeatButton>
                                    <Track.IncreaseRepeatButton>
                                        <RepeatButton Style="{StaticResource HorizontalScrollBarPageButton}"  Command="{x:Static ScrollBar.PageRightCommand}"/>
                                    </Track.IncreaseRepeatButton>
                                    <Track.Thumb>
                                        <Thumb Style="{StaticResource ScrollBarThumb}"/>
                                    </Track.Thumb>
                                </Track>
                            </Grid>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
            </Trigger>
        </Style.Triggers>
    </Style>
    <Style x:Key="for_scrollviewer"
           TargetType="{x:Type ScrollViewer}">
        <Setter Property="BorderBrush" Value="LightGray"/>
        <Setter Property="BorderThickness" Value="0"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ScrollViewer}">
                    <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" SnapsToDevicePixels="True">
                        <Grid Background="{TemplateBinding Background}">
                            <ScrollContentPresenter  Cursor="{TemplateBinding Cursor}" Margin="{TemplateBinding Padding}" ContentTemplate="{TemplateBinding ContentTemplate}"/>
                            <ScrollBar x:Name="PART_VerticalScrollBar"
                                       HorizontalAlignment="Right"
                                       Maximum="{TemplateBinding ScrollableHeight}"
                                       Orientation="Vertical"
                                       Style="{StaticResource for_scrollbar}"
                                       ViewportSize="{TemplateBinding ViewportHeight}"
                                       Value="{TemplateBinding VerticalOffset}"
                                       Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}"/>
                            <ScrollBar x:Name="PART_HorizontalScrollBar"
                                       Maximum="{TemplateBinding ScrollableWidth}"
                                       Orientation="Horizontal"
                                       Style="{StaticResource for_scrollbar}"
                                       VerticalAlignment="Bottom"
                                       Value="{TemplateBinding HorizontalOffset}"
                                       ViewportSize="{TemplateBinding ViewportWidth}"
                                       Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}"/>
                        </Grid>
                    </Border>
                    <ControlTemplate.Triggers>
                        <EventTrigger RoutedEvent="ScrollChanged" >
                            <BeginStoryboard>
                                <Storyboard>
                                    <DoubleAnimation
                                        Storyboard.TargetName="PART_VerticalScrollBar"
                                        Storyboard.TargetProperty="Opacity"
                                        To="0.8"
                                        Duration="0:0:1"/>
                                    <DoubleAnimation
                                        Storyboard.TargetName="PART_VerticalScrollBar"
                                        Storyboard.TargetProperty="Opacity"
                                        To="0.2"
                                        Duration="0:0:1"
                                        BeginTime="0:0:1"/>
                                    <DoubleAnimation
                                        Storyboard.TargetName="PART_HorizontalScrollBar"
                                        Storyboard.TargetProperty="Opacity"
                                        To="0.8"
                                        Duration="0:0:1"/>
                                    <DoubleAnimation
                                        Storyboard.TargetName="PART_HorizontalScrollBar"
                                        Storyboard.TargetProperty="Opacity"
                                        To="0.2"
                                        Duration="0:0:1"
                                        BeginTime="0:0:1"/>
                                </Storyboard>
                            </BeginStoryboard>
                        </EventTrigger>
                        <EventTrigger RoutedEvent="MouseEnter"
                                      SourceName="PART_VerticalScrollBar">
                            <BeginStoryboard>
                                <Storyboard>
                                    <DoubleAnimation
                                        Storyboard.TargetName="PART_VerticalScrollBar"
                                        Storyboard.TargetProperty="Opacity"
                                        To="0.8"
                                        Duration="0:0:0.7"/>
                                </Storyboard>
                            </BeginStoryboard>
                        </EventTrigger>
                        <EventTrigger RoutedEvent="MouseLeave"
                                      SourceName="PART_VerticalScrollBar">
                            <BeginStoryboard>
                                <Storyboard>
                                    <DoubleAnimation
                                        Storyboard.TargetName="PART_VerticalScrollBar"
                                        Storyboard.TargetProperty="Opacity"
                                        To="0.2"
                                        Duration="0:0:0.7"/>
                                </Storyboard>
                            </BeginStoryboard>
                        </EventTrigger>
                        <EventTrigger RoutedEvent="MouseEnter"
                                      SourceName="PART_HorizontalScrollBar">
                            <BeginStoryboard>
                                <Storyboard>
                                    <DoubleAnimation
                                        Storyboard.TargetName="PART_HorizontalScrollBar"
                                        Storyboard.TargetProperty="Opacity"
                                        To="0.8"
                                        Duration="0:0:0.7"/>
                                </Storyboard>
                            </BeginStoryboard>
                        </EventTrigger>
                        <EventTrigger RoutedEvent="MouseLeave"
                                      SourceName="PART_HorizontalScrollBar">
                            <BeginStoryboard>
                                <Storyboard>
                                    <DoubleAnimation
                                        Storyboard.TargetName="PART_HorizontalScrollBar"
                                        Storyboard.TargetProperty="Opacity"
                                        To="0.2"
                                        Duration="0:0:0.7"/>
                                </Storyboard>
                            </BeginStoryboard>
                        </EventTrigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <!--默认ScrollBar-->
    <Style TargetType="ScrollBar" BasedOn="{StaticResource for_scrollbar}"/>

    <!--默认ScrollView-->
    <Style TargetType="ScrollViewer" BasedOn="{StaticResource for_scrollviewer}"/>

修改之后的滚动条是影响全局的。

样式应用之后的效果如下：

引用示例：

<ScrollViewer Margin="10" Height="200" Width="100" BorderBrush="Gray" BorderThickness="1">
        <StackPanel Orientation="Vertical">
              <TextBlock Text="测试一"/>
              <TextBlock Text="测试一"/>
              <TextBlock Text="测试一"/>
              <TextBlock Text="测试一"/>
              <TextBlock Text="测试一"/>
              <TextBlock Text="测试一"/>
              <TextBlock Text="测试一"/>
              <TextBlock Text="测试一"/>
              <TextBlock Text="测试一"/>
              <TextBlock Text="测试一"/>
              <TextBlock Text="测试一"/>
              <TextBlock Text="测试一"/>
              <TextBlock Text="测试一"/>
              <TextBlock Text="测试一"/>
              <TextBlock Text="测试一"/>
              <TextBlock Text="测试一"/>
              <TextBlock Text="测试一"/>
              <TextBlock Text="测试一"/>
              <TextBlock Text="测试一"/>
         </StackPanel>
 </ScrollViewer>

原文地址：https://www.cnblogs.com/xiaomingg/p/8733258.html

时间： 2024-11-01 23:15:16

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