Question

在我的WPF应用程序中，我使用图像作为背景和拇指来设置ScrollBar的样式。滚动条沿滚动条的整个高度滚动。但在ScrollViewer中，拇指不会沿着整个轨道滚动。它在轨道中间滚动但不靠近滚动条的末端。请参阅附图。

以下是ScrollBar样式：

    <ImageBrush x:Key="ScrollBar.Static.Background" ImageSource="/WpfApplication1;component/Resources/ZeePad v1.65B for dev Vertical Slide.png" Stretch="Fill" />
<ImageBrush x:Key="ScrollBar.Static.Horizontal.Background" ImageSource="/WpfApplication1;component/Resources/ZeePad v1.65B for dev Vertical Slide - Horizontal.png" Stretch="Fill" />
<ImageBrush x:Key="ScrollBar.MouseOver.Thumb" ImageSource="/WpfApplication1;component/Resources/ZeePad v1.65B for dev Slider Knob.png" Stretch="Uniform" />
<ImageBrush x:Key="ScrollBar.Pressed.Thumb" ImageSource="/WpfApplication1;component/Resources/ZeePad v1.65B for dev Slider Knob.png" Stretch="Uniform" />
<ImageBrush x:Key="ScrollBar.Static.Thumb" ImageSource="/WpfApplication1;component/Resources/ZeePad v1.65B for dev Slider Knob.png" Stretch="Uniform" />
<SolidColorBrush x:Key="ScrollBar.Static.Border" Color="#F0F0F0"/>
<Style x:Key="ScrollBarThumbVertical" TargetType="{x:Type Thumb}">
    <Setter Property="OverridesDefaultStyle" Value="true"/>
    <Setter Property="IsTabStop" Value="false"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type Thumb}">
                <Rectangle x:Name="rectangle" Fill="{StaticResource ScrollBar.Static.Thumb}" Height="{TemplateBinding Height}" SnapsToDevicePixels="True" Width="{TemplateBinding Width}"/>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsMouseOver" Value="true">
                        <Setter Property="Fill" TargetName="rectangle" Value="{StaticResource ScrollBar.MouseOver.Thumb}"/>
                    </Trigger>
                    <Trigger Property="IsDragging" Value="true">
                        <Setter Property="Fill" TargetName="rectangle" Value="{StaticResource ScrollBar.Pressed.Thumb}"/>
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>
<Style x:Key="ScrollBarThumbHorizontal" TargetType="{x:Type Thumb}">
    <Setter Property="OverridesDefaultStyle" Value="true"/>
    <Setter Property="IsTabStop" Value="false"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type Thumb}">
                <Rectangle x:Name="rectangle" Fill="{StaticResource ScrollBar.Static.Thumb}" Height="{TemplateBinding Height}" SnapsToDevicePixels="True" Width="{TemplateBinding Width}"/>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsMouseOver" Value="true">
                        <Setter Property="Fill" TargetName="rectangle" Value="{StaticResource ScrollBar.MouseOver.Thumb}"/>
                    </Trigger>
                    <Trigger Property="IsDragging" Value="true">
                        <Setter Property="Fill" TargetName="rectangle" Value="{StaticResource ScrollBar.Pressed.Thumb}"/>
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>
<Style TargetType="{x:Type ScrollBar}">
    <Setter Property="Stylus.IsPressAndHoldEnabled" Value="false"/>
    <Setter Property="Stylus.IsFlicksEnabled" Value="false"/>
    <Setter Property="Background" Value="{StaticResource ScrollBar.Static.Background}"/>
    <Setter Property="BorderBrush" Value="{StaticResource ScrollBar.Static.Border}"/>
    <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
    <Setter Property="BorderThickness" Value="1,0"/>
    <Setter Property="Width" Value="{DynamicResource {x:Static SystemParameters.VerticalScrollBarWidthKey}}"/>
    <Setter Property="MinWidth" Value="{DynamicResource {x:Static SystemParameters.VerticalScrollBarWidthKey}}"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type ScrollBar}">
                <Grid x:Name="Bg" SnapsToDevicePixels="true">
                    <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" />
                    <Track x:Name="PART_Track" IsDirectionReversed="true" IsEnabled="{TemplateBinding IsMouseOver}" >
                        <Track.Thumb>
                            <Thumb Style="{StaticResource ScrollBarThumbVertical}"/>
                        </Track.Thumb>
                    </Track>
                </Grid>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsEnabled" Value="false"/>
                </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="{DynamicResource {x:Static SystemParameters.HorizontalScrollBarHeightKey}}"/>
            <Setter Property="MinHeight" Value="{DynamicResource {x:Static SystemParameters.HorizontalScrollBarHeightKey}}"/>
            <Setter Property="BorderThickness" Value="0,1"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type ScrollBar}">
                        <Grid x:Name="Bg" SnapsToDevicePixels="true">
                            <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{StaticResource ScrollBar.Static.Horizontal.Background}" />
                            <Track x:Name="PART_Track" IsEnabled="{TemplateBinding IsMouseOver}">
                                <Track.Thumb>
                                    <Thumb Style="{StaticResource ScrollBarThumbHorizontal}"/>
                                </Track.Thumb>
                            </Track>
                        </Grid>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsEnabled" Value="false"/>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Trigger>
    </Style.Triggers>
</Style>

ScrollView样式如下：

    <Style TargetType="ScrollViewer">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type ScrollViewer}">
                <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>
                    <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}" />
                    <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, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}" ViewportSize="{TemplateBinding ViewportWidth}" />
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

Image Attached

知道为什么吗？感谢。

使用图像设置样式的ScrollViewer不会在完整音轨上滚动

0 个答案: