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ScrollBar ControlTemplate, exemple

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Mise à jour : novembre 2007

Les contrôles de Windows Presentation Foundation (WPF) disposent d'un ControlTemplate qui contient l'arborescence visuelle de ce contrôle. Vous pouvez modifier la structure et l'apparence d'un contrôle en modifiant le ControlTemplate de ce contrôle. Il est impossible de ne remplacer qu'une partie de l'arborescence visuelle d'un contrôle ; pour modifier l'arborescence visuelle d'un contrôle, vous devez affecter le nouveau ControlTemplate complet à la propriété Template de ce contrôle.

Cette rubrique montre le ControlTemplate du contrôle WPFScrollBar.

Cette rubrique comprend les sections suivantes.

  • Composants requis
  • ScrollBar ControlTemplate, exemple
  • Rubriques connexes

Composants requis

Pour exécuter les exemples de cette rubrique, vous devez savoir comment écrire des applications WPF. Pour plus d'informations, consultez Mise en route de Windows Presentation Foundation. Vous devez également savoir comment les styles sont utilisés dans WPF. Pour plus d'informations, consultez Application d'un style et création de modèles.

ScrollBar ControlTemplate, exemple

Bien que cet exemple contienne tous les éléments définis dans le ControlTemplate d'un ScrollBar par défaut, les valeurs spécifiques doivent être considérées comme des exemples.

<Style x:Key="ScrollBarLineButton" TargetType="{x:Type RepeatButton}">
  <Setter Property="SnapsToDevicePixels" Value="True"/>
  <Setter Property="OverridesDefaultStyle" Value="true"/>
  <Setter Property="Focusable" Value="false"/>
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="{x:Type RepeatButton}">
        <Border 
          Name="Border"
          Margin="1" 
          CornerRadius="2" 
          Background="{StaticResource NormalBrush}"
          BorderBrush="{StaticResource NormalBorderBrush}"
          BorderThickness="1">
          <Path 
            HorizontalAlignment="Center"
            VerticalAlignment="Center"
            Fill="{StaticResource GlyphBrush}"
            Data="{Binding Path=Content,RelativeSource={RelativeSource TemplatedParent}}" />
        </Border>
        <ControlTemplate.Triggers>
          <Trigger Property="IsPressed" Value="true">
            <Setter TargetName="Border" Property="Background" Value="{StaticResource PressedBrush}" />
          </Trigger>
          <Trigger Property="IsEnabled" Value="false">
            <Setter Property="Foreground" Value="{StaticResource DisabledForegroundBrush}"/>
          </Trigger>
        </ControlTemplate.Triggers>
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

<Style x:Key="ScrollBarPageButton" TargetType="{x:Type RepeatButton}">
  <Setter Property="SnapsToDevicePixels" Value="True"/>
  <Setter Property="OverridesDefaultStyle" Value="true"/>
  <Setter Property="IsTabStop" Value="false"/>
  <Setter Property="Focusable" Value="false"/>
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="{x:Type RepeatButton}">
        <Border Background="Transparent" />
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

<Style x:Key="ScrollBarThumb" TargetType="{x:Type Thumb}">
  <Setter Property="SnapsToDevicePixels" Value="True"/>
  <Setter Property="OverridesDefaultStyle" Value="true"/>
  <Setter Property="IsTabStop" Value="false"/>
  <Setter Property="Focusable" Value="false"/>
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="{x:Type Thumb}">
        <Border 
          CornerRadius="2" 
          Background="{TemplateBinding Background}"
          BorderBrush="{TemplateBinding BorderBrush}"
          BorderThickness="1" />
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

<ControlTemplate x:Key="VerticalScrollBar" TargetType="{x:Type ScrollBar}">
  <Grid >
    <Grid.RowDefinitions>
      <RowDefinition MaxHeight="18"/>
      <RowDefinition Height="0.00001*"/>
      <RowDefinition MaxHeight="18"/>
    </Grid.RowDefinitions>
    <Border
      Grid.RowSpan="3"
      CornerRadius="2" 
      Background="#F0F0F0" />
    <RepeatButton 
      Grid.Row="0"                           
      Style="{StaticResource ScrollBarLineButton}"
      Height="18"
      Command="ScrollBar.LineUpCommand"
      Content="M 0 4 L 8 4 L 4 0 Z" />
    <Track 
      Name="PART_Track"
      Grid.Row="1"
      IsDirectionReversed="true">
      <Track.DecreaseRepeatButton>
        <RepeatButton 
          Style="{StaticResource ScrollBarPageButton}"
          Command="ScrollBar.PageUpCommand" />
      </Track.DecreaseRepeatButton>
      <Track.Thumb>
        <Thumb 
          Style="{StaticResource ScrollBarThumb}" 
          Margin="1,0,1,0"  
          Background="{StaticResource HorizontalNormalBrush}"
          BorderBrush="{StaticResource HorizontalNormalBorderBrush}" />
      </Track.Thumb>
      <Track.IncreaseRepeatButton>
        <RepeatButton 
          Style="{StaticResource ScrollBarPageButton}"
          Command="ScrollBar.PageDownCommand" />
      </Track.IncreaseRepeatButton>
    </Track>
    <RepeatButton 
      Grid.Row="3" 
      Style="{StaticResource ScrollBarLineButton}"
      Height="18"
      Command="ScrollBar.LineDownCommand"
      Content="M 0 0 L 4 4 L 8 0 Z"/>
  </Grid>
</ControlTemplate>

<ControlTemplate x:Key="HorizontalScrollBar" TargetType="{x:Type ScrollBar}">
  <Grid >
    <Grid.ColumnDefinitions>
      <ColumnDefinition MaxWidth="18"/>
      <ColumnDefinition Width="0.00001*"/>
      <ColumnDefinition MaxWidth="18"/>
    </Grid.ColumnDefinitions>
    <Border
      Grid.ColumnSpan="3"
      CornerRadius="2" 
      Background="#F0F0F0" />
    <RepeatButton 
      Grid.Column="0"                           
      Style="{StaticResource ScrollBarLineButton}"
      Width="18"
      Command="ScrollBar.LineLeftCommand"
      Content="M 4 0 L 4 8 L 0 4 Z" />
    <Track 
      Name="PART_Track"
      Grid.Column="1"
      IsDirectionReversed="False">
      <Track.DecreaseRepeatButton>
        <RepeatButton 
          Style="{StaticResource ScrollBarPageButton}"
          Command="ScrollBar.PageLeftCommand" />
      </Track.DecreaseRepeatButton>
      <Track.Thumb>
        <Thumb 
          Style="{StaticResource ScrollBarThumb}" 
          Margin="0,1,0,1"  
          Background="{StaticResource NormalBrush}"
          BorderBrush="{StaticResource NormalBorderBrush}" />
      </Track.Thumb>
      <Track.IncreaseRepeatButton>
        <RepeatButton 
          Style="{StaticResource ScrollBarPageButton}"
          Command="ScrollBar.PageRightCommand" />
      </Track.IncreaseRepeatButton>
    </Track>
    <RepeatButton 
      Grid.Column="3" 
      Style="{StaticResource ScrollBarLineButton}"
      Width="18"
      Command="ScrollBar.LineRightCommand"
      Content="M 0 0 L 4 4 L 0 8 Z"/>
  </Grid>
</ControlTemplate>

<Style x:Key="{x:Type ScrollBar}" TargetType="{x:Type ScrollBar}">
  <Setter Property="SnapsToDevicePixels" Value="True"/>
  <Setter Property="OverridesDefaultStyle" Value="true"/>
  <Style.Triggers>
    <Trigger Property="Orientation" Value="Horizontal">
      <Setter Property="Width" Value="Auto"/>
      <Setter Property="Height" Value="18" />
      <Setter Property="Template" Value="{StaticResource HorizontalScrollBar}" />
    </Trigger>
    <Trigger Property="Orientation" Value="Vertical">
      <Setter Property="Width" Value="18"/>
      <Setter Property="Height" Value="Auto" />
      <Setter Property="Template" Value="{StaticResource VerticalScrollBar}" />
    </Trigger>
  </Style.Triggers>
</Style>

L'exemple précédent utilise une ou plusieurs des ressources suivantes.

<!-- Fill Brushes -->

<LinearGradientBrush x:Key="NormalBrush" StartPoint="0,0" EndPoint="0,1">
  <GradientBrush.GradientStops>
    <GradientStopCollection>
      <GradientStop Color="#FFF" Offset="0.0"/>
      <GradientStop Color="#CCC" Offset="1.0"/>
    </GradientStopCollection>
  </GradientBrush.GradientStops>
</LinearGradientBrush>

<LinearGradientBrush x:Key="HorizontalNormalBrush" StartPoint="0,0" EndPoint="1,0">
  <GradientBrush.GradientStops>
    <GradientStopCollection>
      <GradientStop Color="#FFF" Offset="0.0"/>
      <GradientStop Color="#CCC" Offset="1.0"/>
    </GradientStopCollection>
  </GradientBrush.GradientStops>
</LinearGradientBrush>

<LinearGradientBrush x:Key="LightBrush" StartPoint="0,0" EndPoint="0,1">
  <GradientBrush.GradientStops>
    <GradientStopCollection>
      <GradientStop Color="#FFF" Offset="0.0"/>
      <GradientStop Color="#EEE" Offset="1.0"/>
    </GradientStopCollection>
  </GradientBrush.GradientStops>
</LinearGradientBrush>

<LinearGradientBrush x:Key="HorizontalLightBrush" StartPoint="0,0" EndPoint="1,0">
  <GradientBrush.GradientStops>
    <GradientStopCollection>
      <GradientStop Color="#FFF" Offset="0.0"/>
      <GradientStop Color="#EEE" Offset="1.0"/>
    </GradientStopCollection>
  </GradientBrush.GradientStops>
</LinearGradientBrush>

<LinearGradientBrush x:Key="DarkBrush" StartPoint="0,0" EndPoint="0,1">
  <GradientBrush.GradientStops>
    <GradientStopCollection>
      <GradientStop Color="#FFF" Offset="0.0"/>
      <GradientStop Color="#AAA" Offset="1.0"/>
    </GradientStopCollection>
  </GradientBrush.GradientStops>
</LinearGradientBrush>

<LinearGradientBrush x:Key="PressedBrush" StartPoint="0,0" EndPoint="0,1">
  <GradientBrush.GradientStops>
    <GradientStopCollection>
      <GradientStop Color="#BBB" Offset="0.0"/>
      <GradientStop Color="#EEE" Offset="0.1"/>
      <GradientStop Color="#EEE" Offset="0.9"/>
      <GradientStop Color="#FFF" Offset="1.0"/>
    </GradientStopCollection>
  </GradientBrush.GradientStops>
</LinearGradientBrush>

<SolidColorBrush x:Key="DisabledForegroundBrush" Color="#888" />

<SolidColorBrush x:Key="DisabledBackgroundBrush" Color="#EEE" />

<SolidColorBrush x:Key="WindowBackgroundBrush" Color="#FFF" />

<SolidColorBrush x:Key="SelectedBackgroundBrush" Color="#DDD" />

<!-- Border Brushes -->

<LinearGradientBrush x:Key="NormalBorderBrush" StartPoint="0,0" EndPoint="0,1">
  <GradientBrush.GradientStops>
    <GradientStopCollection>
      <GradientStop Color="#CCC" Offset="0.0"/>
      <GradientStop Color="#444" Offset="1.0"/>
    </GradientStopCollection>
  </GradientBrush.GradientStops>
</LinearGradientBrush>

<LinearGradientBrush x:Key="HorizontalNormalBorderBrush" StartPoint="0,0" EndPoint="1,0">
  <GradientBrush.GradientStops>
    <GradientStopCollection>
      <GradientStop Color="#CCC" Offset="0.0"/>
      <GradientStop Color="#444" Offset="1.0"/>
    </GradientStopCollection>
  </GradientBrush.GradientStops>
</LinearGradientBrush>

<LinearGradientBrush x:Key="DefaultedBorderBrush" StartPoint="0,0" EndPoint="0,1">
  <GradientBrush.GradientStops>
    <GradientStopCollection>
      <GradientStop Color="#777" Offset="0.0"/>
      <GradientStop Color="#000" Offset="1.0"/>
    </GradientStopCollection>
  </GradientBrush.GradientStops>
</LinearGradientBrush>

<LinearGradientBrush x:Key="PressedBorderBrush" StartPoint="0,0" EndPoint="0,1">
  <GradientBrush.GradientStops>
    <GradientStopCollection>
      <GradientStop Color="#444" Offset="0.0"/>
      <GradientStop Color="#888" Offset="1.0"/>
    </GradientStopCollection>
  </GradientBrush.GradientStops>
</LinearGradientBrush>

<SolidColorBrush x:Key="DisabledBorderBrush" Color="#AAA" />

<SolidColorBrush x:Key="SolidBorderBrush" Color="#888" />

<SolidColorBrush x:Key="LightBorderBrush" Color="#AAA" />

<!-- Miscellaneous Brushes -->
<SolidColorBrush x:Key="GlyphBrush" Color="#444" />

<SolidColorBrush x:Key="LightColorBrush" Color="#DDD" />

Pour l'exemple complet, consultez Style avec ControlTemplates, exemple.

Voir aussi

Concepts

Recommandations pour la conception de contrôles auxquels un style peut être appliqué

Autres ressources

Exemples de ControlTemplate