在C# WPF下自定義滾動條ScrollViewer樣式的操作
阿新 • • 發佈:2021-01-15
一、實現對ScrollViewer樣式的自定義主要包括:
1、滾動條寬度設定
2、滾動條顏色
3、滾動條圓角
4、滾動條拉動時的效果mouseover
二、實現效果:
三、實現方法
1、建立資源字典( ResourceDictionary)檔案
由於style程式碼比較多,之間在控制元件檔案中載入style比較混亂,也不利於其它視窗複用,這裡單獨建立了ScrollViewDictionary.xaml檔案程式碼如下:
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> <ControlTemplate x:Key="MyScrollViewer" TargetType="{x:Type ScrollViewer}"> <!--View區域背景色--> <Grid x:Name="Grid" Background="{TemplateBinding Background}"> <Grid.ColumnDefinitions> <ColumnDefinition Width="*"/> <ColumnDefinition Width="Auto"/> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition Height="*"/> <RowDefinition Height="Auto"/> </Grid.RowDefinitions> <Rectangle x:Name="Corner" Grid.Column="1" Fill="White" Grid.Row="1"/> <ScrollContentPresenter x:Name="PART_ScrollContentPresenter" CanContentScroll="{TemplateBinding CanContentScroll}" CanHorizontallyScroll="False" CanVerticallyScroll="False" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" Grid.Column="0" Margin="{TemplateBinding Padding}" Grid.Row="0"/> <ScrollBar x:Name="PART_VerticalScrollBar" AutomationProperties.AutomationId="VerticalScrollBar" Cursor="Arrow" Grid.Column="1" Maximum="{TemplateBinding ScrollableHeight}" Minimum="0" Grid.Row="0" Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}" Value="{Binding VerticalOffset,Mode=OneWay,RelativeSource={RelativeSource TemplatedParent}}" ViewportSize="{TemplateBinding ViewportHeight}" Style="{DynamicResource MyScrollBarStyle}"/> <ScrollBar x:Name="PART_HorizontalScrollBar" AutomationProperties.AutomationId="HorizontalScrollBar" Cursor="Arrow" Grid.Column="0" Maximum="{TemplateBinding ScrollableWidth}" Minimum="0" Orientation="Horizontal" Grid.Row="1" Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}" Value="{Binding HorizontalOffset,RelativeSource={RelativeSource TemplatedParent}}" ViewportSize="{TemplateBinding ViewportWidth}" Style="{DynamicResource MyScrollBarStyle}"/> </Grid> </ControlTemplate> <SolidColorBrush x:Key="ScrollBarDisabledBackground" Color="#F4F4F4"/> <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="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type RepeatButton}"> <Rectangle Fill="{TemplateBinding Background}" Height="{TemplateBinding Height}" Width="{TemplateBinding Width}"/> </ControlTemplate> </Setter.Value> </Setter> </Style> <!--滾動條顏色、圓角等設定--> <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}"> <!--滾動條顏色和圓角設定--> <Rectangle Name="thumbRect" Fill="#03ffea" RadiusX="3" RadiusY="3"/> <!--滑鼠拉動滾動條時的顏色--> <ControlTemplate.Triggers> <Trigger Property="IsMouseOver" Value="True"> <Setter Property="Fill" Value="CornflowerBlue" TargetName="thumbRect" /> </Trigger> </ControlTemplate.Triggers> </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="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type RepeatButton}"> <Rectangle Fill="{TemplateBinding Background}" Height="{TemplateBinding Height}" Width="{TemplateBinding Width}"/> </ControlTemplate> </Setter.Value> </Setter> </Style> <Style x:Key="MyScrollBarStyle" TargetType="{x:Type ScrollBar}"> <Setter Property="Background" Value="AliceBlue"/> <Setter Property="Stylus.IsPressAndHoldEnabled" Value="false"/> <Setter Property="Stylus.IsFlicksEnabled" Value="false"/> <!--滾動條寬度--> <Setter Property="Width" Value="8"/> <Setter Property="MinWidth" Value="6"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type ScrollBar}"> <!--滾動條背景色--> <Grid x:Name="Bg" Background="#001f55" SnapsToDevicePixels="true" Width="8"> <Grid.RowDefinitions> <RowDefinition /> </Grid.RowDefinitions> <Track x:Name="PART_Track" IsDirectionReversed="true" IsEnabled="{TemplateBinding IsMouseOver}"> <Track.DecreaseRepeatButton> <RepeatButton Command="{x:Static ScrollBar.PageUpCommand}" Style="{StaticResource VerticalScrollBarPageButton}"/> </Track.DecreaseRepeatButton> <Track.IncreaseRepeatButton> <RepeatButton Command="{x:Static ScrollBar.PageDownCommand}" Style="{StaticResource VerticalScrollBarPageButton}"/> </Track.IncreaseRepeatButton> <Track.Thumb> <Thumb Style="{StaticResource ScrollBarThumb}"/> </Track.Thumb> </Track> </Grid> <ControlTemplate.Triggers> <Trigger Property="IsEnabled" Value="false"> <Setter Property="Background" TargetName="Bg" Value="{StaticResource ScrollBarDisabledBackground}"/> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> <Style.Triggers> <Trigger Property="Orientation" Value="Horizontal"> <Setter Property="Width" Value="Auto"/> <Setter Property="MinWidth" Value="0"/> <Setter Property="Height" Value="6"/> <Setter Property="MinHeight" Value="6"/> <Setter Property="Background" Value="AliceBlue"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type ScrollBar}"> <Grid x:Name="Bg" Background="Red" SnapsToDevicePixels="true"> <Grid.ColumnDefinitions> <ColumnDefinition /> </Grid.ColumnDefinitions> <Track x:Name="PART_Track" IsEnabled="{TemplateBinding IsMouseOver}"> <Track.DecreaseRepeatButton> <RepeatButton Command="{x:Static ScrollBar.PageLeftCommand}" Style="{StaticResource HorizontalScrollBarPageButton}"/> </Track.DecreaseRepeatButton> <Track.IncreaseRepeatButton> <RepeatButton Command="{x:Static ScrollBar.PageRightCommand}" Style="{StaticResource HorizontalScrollBarPageButton}"/> </Track.IncreaseRepeatButton> <Track.Thumb> <Thumb Style="{StaticResource ScrollBarThumb}" /> </Track.Thumb> </Track> </Grid> <ControlTemplate.Triggers> <Trigger Property="IsEnabled" Value="false"> <Setter Property="Background" TargetName="Bg" Value="{StaticResource ScrollBarDisabledBackground}"/> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Trigger> </Style.Triggers> </Style> </ResourceDictionary>
2、在視窗中引用資源字典
<Window.Resources> <ResourceDictionary> <ResourceDictionary.MergedDictionaries> <ResourceDictionary Source="ScrollViewDictionary.xaml" /> </ResourceDictionary.MergedDictionaries> </ResourceDictionary> </Window.Resources>
3、scrollViewer中使用新樣式
<ScrollViewer Template="{StaticResource MyScrollViewer}" Grid.Column="0" Grid.Row="1" VerticalAlignment="Top" Grid.ColumnSpan="2" x:Name="scrList" Margin="0" VerticalScrollBarVisibility="Auto" Height="350" Width="250"> <StackPanel Orientation="Vertical" Name="layerList" ScrollViewer.VerticalScrollBarVisibility="Visible" Width="250" > </StackPanel> </ScrollViewer>
自定義完成,以上是所有步驟和程式碼,可以根據自己程式的整體設計來更改顏色、寬度、圓角等效果。
以上為個人經驗,希望能給大家一個參考,也希望大家多多支援我們。如有錯誤或未考慮完全的地方,望不吝賜教。