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Estilos e modelos de controle deslizante

  • Artigo

Este tópico descreve os estilos e modelos para o Slider controle. Você pode modificar o padrão ControlTemplate para dar ao controle uma aparência exclusiva. Para obter mais informações, consulte Criar um modelo para um controle.

Peças Deslizantes

A tabela a seguir lista as partes nomeadas para o Slider controle.

Parte Tipo Descrição
PART_Track Track O contêiner do elemento que indica a posição do Slider.
PART_SelectionRange FrameworkElement O elemento que exibe um intervalo de seleção ao longo do Slider. O intervalo de seleção ficará visível somente se a IsSelectionRangeEnabled propriedade for true.

Estados deslizantes

A tabela a seguir lista os estados visuais do Slider controle.

Nome do VisualState Nome do VisualStateGroup Descrição
Normal CommonStates O estado padrão.
MouseOver CommonStates O ponteiro do mouse é posicionado sobre o controle.
Desabilitadas CommonStates O controle está desabilitado.
Focalizado FocusStates O controle tem foco.
Sem foco FocusStates O controle não tem foco.
Válido ValidationStates O controle usa a classe e a Validation propriedade anexada Validation.HasError é false.
InvalidFocused ValidationStates A Validation.HasError propriedade anexada é true tem o controle tem foco.
InvalidUnfocused ValidationStates A Validation.HasError propriedade anexada é true tem o controle não tem foco.

Exemplo de controle deslizante ControlTemplate

O exemplo a seguir mostra como definir um ControlTemplate para o Slider controle.

<Style x:Key="SliderButtonStyle"
       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="SliderThumbStyle"
       TargetType="{x:Type Thumb}">
  <Setter Property="SnapsToDevicePixels"
          Value="true" />
  <Setter Property="OverridesDefaultStyle"
          Value="true" />
  <Setter Property="Height"
          Value="14" />
  <Setter Property="Width"
          Value="14" />
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="{x:Type Thumb}">
        <Ellipse x:Name="Ellipse"
                 StrokeThickness="1">
          <Ellipse.Stroke>
            <LinearGradientBrush StartPoint="0,0"
                                 EndPoint="0,1">
              <LinearGradientBrush.GradientStops>
                <GradientStopCollection>
                  <GradientStop Color="{DynamicResource BorderLightColor}"
                                Offset="0.0" />
                  <GradientStop Color="{DynamicResource BorderDarkColor}"
                                Offset="1.0" />
                </GradientStopCollection>
              </LinearGradientBrush.GradientStops>
            </LinearGradientBrush>
          </Ellipse.Stroke>
          <Ellipse.Fill>
            <LinearGradientBrush EndPoint="0.5,1"
                                 StartPoint="0.5,0">
              <GradientStop Color="{DynamicResource ControlMediumColor}"
                            Offset="1" />
              <GradientStop Color="{DynamicResource ControlLightColor}" />
            </LinearGradientBrush>
          </Ellipse.Fill>
          <VisualStateManager.VisualStateGroups>
            <VisualStateGroup x:Name="CommonStates">
              <VisualState x:Name="Normal" />
              <VisualState x:Name="MouseOver">
                <Storyboard>
                  <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.Fill).
                    (GradientBrush.GradientStops)[0].(GradientStop.Color)"
                                                Storyboard.TargetName="Ellipse">
                    <EasingColorKeyFrame KeyTime="0"
                                         Value="{StaticResource ControlMouseOverColor}" />
                  </ColorAnimationUsingKeyFrames>
                </Storyboard>
              </VisualState>
              <VisualState x:Name="Pressed">
                <Storyboard>
                  <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.Fill).
                    (GradientBrush.GradientStops)[0].(GradientStop.Color)"
                                                Storyboard.TargetName="Ellipse">
                    <EasingColorKeyFrame KeyTime="0"
                                         Value="{StaticResource ControlPressedColor}" />
                  </ColorAnimationUsingKeyFrames>
                </Storyboard>
              </VisualState>
              <VisualState x:Name="Disabled">
                <Storyboard>
                  <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.Fill).
                    (GradientBrush.GradientStops)[0].(GradientStop.Color)"
                                                Storyboard.TargetName="Ellipse">
                    <EasingColorKeyFrame KeyTime="0"
                                         Value="{StaticResource DisabledControlDarkColor}" />
                  </ColorAnimationUsingKeyFrames>
                </Storyboard>
              </VisualState>
            </VisualStateGroup>
          </VisualStateManager.VisualStateGroups>
        </Ellipse>
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

<!--Template when the orientation of the Slider is Horizontal.-->
<ControlTemplate x:Key="HorizontalSlider"
                 TargetType="{x:Type Slider}">
  <Grid>
    <Grid.RowDefinitions>
      <RowDefinition Height="Auto" />
      <RowDefinition Height="Auto"
                     MinHeight="{TemplateBinding MinHeight}" />
      <RowDefinition Height="Auto" />
    </Grid.RowDefinitions>
    <TickBar x:Name="TopTick"
             SnapsToDevicePixels="True"
             Placement="Top"
             Height="4"
             Visibility="Collapsed">
      <TickBar.Fill>
        <SolidColorBrush Color="{DynamicResource GlyphColor}" />
      </TickBar.Fill>
    </TickBar>
    <Border x:Name="TrackBackground"
            Margin="0"
            CornerRadius="2"
            Height="4"
            Grid.Row="1"
            BorderThickness="1">
      <Border.BorderBrush>
        <LinearGradientBrush StartPoint="0,0"
                             EndPoint="0,1">
          <LinearGradientBrush.GradientStops>
            <GradientStopCollection>
              <GradientStop Color="{DynamicResource BorderLightColor}"
                            Offset="0.0" />
              <GradientStop Color="{DynamicResource BorderDarkColor}"
                            Offset="1.0" />
            </GradientStopCollection>
          </LinearGradientBrush.GradientStops>
        </LinearGradientBrush>
      </Border.BorderBrush>
      <Border.Background>
        <LinearGradientBrush StartPoint="0,0"
                             EndPoint="0,1">
          <LinearGradientBrush.GradientStops>
            <GradientStopCollection>
              <GradientStop Color="{DynamicResource ControlLightColor}"
                            Offset="0.0" />
              <GradientStop Color="{DynamicResource SliderTrackDarkColor}"
                            Offset="1.0" />
            </GradientStopCollection>
          </LinearGradientBrush.GradientStops>
        </LinearGradientBrush>
      </Border.Background>
    </Border>
    <Track Grid.Row="1"
           x:Name="PART_Track">
      <Track.DecreaseRepeatButton>
        <RepeatButton Style="{StaticResource SliderButtonStyle}"
                      Command="Slider.DecreaseLarge" />
      </Track.DecreaseRepeatButton>
      <Track.Thumb>
        <Thumb Style="{StaticResource SliderThumbStyle}" />
      </Track.Thumb>
      <Track.IncreaseRepeatButton>
        <RepeatButton Style="{StaticResource SliderButtonStyle}"
                      Command="Slider.IncreaseLarge" />
      </Track.IncreaseRepeatButton>
    </Track>
    <TickBar x:Name="BottomTick"
             SnapsToDevicePixels="True"
             Grid.Row="2"
             Fill="{TemplateBinding Foreground}"
             Placement="Bottom"
             Height="4"
             Visibility="Collapsed" />
  </Grid>
  <ControlTemplate.Triggers>
    <Trigger Property="TickPlacement"
             Value="TopLeft">
      <Setter TargetName="TopTick"
              Property="Visibility"
              Value="Visible" />
    </Trigger>
    <Trigger Property="TickPlacement"
             Value="BottomRight">
      <Setter TargetName="BottomTick"
              Property="Visibility"
              Value="Visible" />
    </Trigger>
    <Trigger Property="TickPlacement"
             Value="Both">
      <Setter TargetName="TopTick"
              Property="Visibility"
              Value="Visible" />
      <Setter TargetName="BottomTick"
              Property="Visibility"
              Value="Visible" />
    </Trigger>
  </ControlTemplate.Triggers>
</ControlTemplate>

<!--Template when the orientation of the Slider is Vertical.-->
<ControlTemplate x:Key="VerticalSlider"
                 TargetType="{x:Type Slider}">
  <Grid>
    <Grid.ColumnDefinitions>
      <ColumnDefinition Width="Auto" />
      <ColumnDefinition Width="Auto"
                        MinWidth="{TemplateBinding MinWidth}" />
      <ColumnDefinition Width="Auto" />
    </Grid.ColumnDefinitions>
    <TickBar x:Name="TopTick"
             SnapsToDevicePixels="True"
             Placement="Left"
             Width="4"
             Visibility="Collapsed">
      <TickBar.Fill>
        <SolidColorBrush Color="{DynamicResource GlyphColor}" />
      </TickBar.Fill>
    </TickBar>

    <Border x:Name="TrackBackground"
            Margin="0"
            CornerRadius="2"
            Width="4"
            Grid.Column="1"
            BorderThickness="1">
      <Border.BorderBrush>
        <LinearGradientBrush StartPoint="0,0"
                             EndPoint="1,0">
          <LinearGradientBrush.GradientStops>
            <GradientStopCollection>
              <GradientStop Color="{DynamicResource BorderLightColor}"
                            Offset="0.0" />
              <GradientStop Color="{DynamicResource BorderDarkColor}"
                            Offset="1.0" />
            </GradientStopCollection>
          </LinearGradientBrush.GradientStops>
        </LinearGradientBrush>

      </Border.BorderBrush>
      <Border.Background>
        <LinearGradientBrush EndPoint="1,0"
                             StartPoint="0.25,0">
          <GradientStop Color="{DynamicResource ControlLightColor}"
                        Offset="0" />
          <GradientStop Color="{DynamicResource SliderTrackDarkColor}"
                        Offset="1" />
        </LinearGradientBrush>
      </Border.Background>
    </Border>
    <Track Grid.Column="1"
           x:Name="PART_Track">
      <Track.DecreaseRepeatButton>
        <RepeatButton Style="{StaticResource SliderButtonStyle}"
                      Command="Slider.DecreaseLarge" />
      </Track.DecreaseRepeatButton>
      <Track.Thumb>
        <Thumb Style="{StaticResource SliderThumbStyle}" />
      </Track.Thumb>
      <Track.IncreaseRepeatButton>
        <RepeatButton Style="{StaticResource SliderButtonStyle}"
                      Command="Slider.IncreaseLarge" />
      </Track.IncreaseRepeatButton>
    </Track>
    <TickBar x:Name="BottomTick"
             SnapsToDevicePixels="True"
             Grid.Column="2"
             Fill="{TemplateBinding Foreground}"
             Placement="Right"
             Width="4"
             Visibility="Collapsed" />
  </Grid>
  <ControlTemplate.Triggers>
    <Trigger Property="TickPlacement"
             Value="TopLeft">
      <Setter TargetName="TopTick"
              Property="Visibility"
              Value="Visible" />
    </Trigger>
    <Trigger Property="TickPlacement"
             Value="BottomRight">
      <Setter TargetName="BottomTick"
              Property="Visibility"
              Value="Visible" />
    </Trigger>
    <Trigger Property="TickPlacement"
             Value="Both">
      <Setter TargetName="TopTick"
              Property="Visibility"
              Value="Visible" />
      <Setter TargetName="BottomTick"
              Property="Visibility"
              Value="Visible" />
    </Trigger>
  </ControlTemplate.Triggers>
</ControlTemplate>

<Style TargetType="{x:Type Slider}">
  <Setter Property="SnapsToDevicePixels"
          Value="true" />
  <Setter Property="OverridesDefaultStyle"
          Value="true" />
  <Style.Triggers>
    <Trigger Property="Orientation"
             Value="Horizontal">
      <Setter Property="MinWidth"
              Value="104" />
      <Setter Property="MinHeight"
              Value="21" />
      <Setter Property="Template"
              Value="{StaticResource HorizontalSlider}" />
    </Trigger>
    <Trigger Property="Orientation"
             Value="Vertical">
      <Setter Property="MinWidth"
              Value="21" />
      <Setter Property="MinHeight"
              Value="104" />
      <Setter Property="Template"
              Value="{StaticResource VerticalSlider}" />
    </Trigger>
  </Style.Triggers>
</Style>

O exemplo anterior usa um ou mais dos seguintes recursos.

<!--Control colors.-->
<Color x:Key="WindowColor">#FFE8EDF9</Color>
<Color x:Key="ContentAreaColorLight">#FFC5CBF9</Color>
<Color x:Key="ContentAreaColorDark">#FF7381F9</Color>

<Color x:Key="DisabledControlLightColor">#FFE8EDF9</Color>
<Color x:Key="DisabledControlDarkColor">#FFC5CBF9</Color>
<Color x:Key="DisabledForegroundColor">#FF888888</Color>

<Color x:Key="SelectedBackgroundColor">#FFC5CBF9</Color>
<Color x:Key="SelectedUnfocusedColor">#FFDDDDDD</Color>

<Color x:Key="ControlLightColor">White</Color>
<Color x:Key="ControlMediumColor">#FF7381F9</Color>
<Color x:Key="ControlDarkColor">#FF211AA9</Color>

<Color x:Key="ControlMouseOverColor">#FF3843C4</Color>
<Color x:Key="ControlPressedColor">#FF211AA9</Color>


<Color x:Key="GlyphColor">#FF444444</Color>
<Color x:Key="GlyphMouseOver">sc#1, 0.004391443, 0.002428215, 0.242281124</Color>

<!--Border colors-->
<Color x:Key="BorderLightColor">#FFCCCCCC</Color>
<Color x:Key="BorderMediumColor">#FF888888</Color>
<Color x:Key="BorderDarkColor">#FF444444</Color>

<Color x:Key="PressedBorderLightColor">#FF888888</Color>
<Color x:Key="PressedBorderDarkColor">#FF444444</Color>

<Color x:Key="DisabledBorderLightColor">#FFAAAAAA</Color>
<Color x:Key="DisabledBorderDarkColor">#FF888888</Color>

<Color x:Key="DefaultBorderBrushDarkColor">Black</Color>

<!--Control-specific resources.-->
<Color x:Key="HeaderTopColor">#FFC5CBF9</Color>
<Color x:Key="DatagridCurrentCellBorderColor">Black</Color>
<Color x:Key="SliderTrackDarkColor">#FFC5CBF9</Color>

<Color x:Key="NavButtonFrameColor">#FF3843C4</Color>

<LinearGradientBrush x:Key="MenuPopupBrush"
                     EndPoint="0.5,1"
                     StartPoint="0.5,0">
  <GradientStop Color="{DynamicResource ControlLightColor}"
                Offset="0" />
  <GradientStop Color="{DynamicResource ControlMediumColor}"
                Offset="0.5" />
  <GradientStop Color="{DynamicResource ControlLightColor}"
                Offset="1" />
</LinearGradientBrush>

<LinearGradientBrush x:Key="ProgressBarIndicatorAnimatedFill"
                     StartPoint="0,0"
                     EndPoint="1,0">
  <LinearGradientBrush.GradientStops>
    <GradientStopCollection>
      <GradientStop Color="#000000FF"
                    Offset="0" />
      <GradientStop Color="#600000FF"
                    Offset="0.4" />
      <GradientStop Color="#600000FF"
                    Offset="0.6" />
      <GradientStop Color="#000000FF"
                    Offset="1" />
    </GradientStopCollection>
  </LinearGradientBrush.GradientStops>
</LinearGradientBrush>

Para ver o exemplo completo, consulte Styling with ControlTemplates Sample (Estilos com a amostra ControlTemplates).

Confira também