AppBarButton styles and templates

项目
03/01/2016

[ This article is for Windows 8.x and Windows Phone 8.x developers writing Windows Runtime apps. If you’re developing for Windows 10, see the latest documentation ]

This topic describes the styles and templates for the AppBarButton control. You can modify these resources and the default ControlTemplate to give the control a unique appearance.

Note

In a Windows Phone Store app, modifying these resources to give an AppBarButton control a unique appearance is only effective when the AppBarButton is used on the page in a free-standing way. For an AppBarButton nested inside a CommandBar, modifying these resources has no effect.

Visual states

These are the VisualStates defined in the control's default style.

VisualState name	VisualStateGroup name	Description
`FullSize`	`ApplicationViewStates`	IsCompact is false.
`Compact`	`ApplicationViewStates`	IsCompact is true.
`Normal`	`CommonStates`	The default state.
`PointerOver`	`CommonStates`	The pointer is positioned over the control.
`Pressed`	`CommonStates`	The control is pressed.
`Disabled`	`CommonStates`	The control is disabled.
`Focused`	`FocusStates`	The control has focus.
`Unfocused`	`FocusStates`	The control doesn't have focus.
`PointerFocused`	`FocusStates`	The control has focus obtained through a pointer action.

Theme resources

These resources are used in the control's default style.

Dark theme brushes

To change the colors of the control in the dark theme, override these brushes in App.xaml.

<SolidColorBrush x:Key="AppBarItemBackgroundThemeBrush" Color="Transparent" />
<SolidColorBrush x:Key="AppBarItemDisabledForegroundThemeBrush" Color="#66FFFFFF" />
<SolidColorBrush x:Key="AppBarItemForegroundThemeBrush" Color="#FFFFFFFF" />
<SolidColorBrush x:Key="AppBarItemPointerOverBackgroundThemeBrush" Color="#21FFFFFF" />
<SolidColorBrush x:Key="AppBarItemPointerOverForegroundThemeBrush" Color="#FFFFFFFF" />
<SolidColorBrush x:Key="AppBarItemPressedForegroundThemeBrush" Color="#FF000000" />

Light theme brushes

To change the colors of the control in the light theme, override these brushes in App.xaml.

<SolidColorBrush x:Key="AppBarItemBackgroundThemeBrush" Color="Transparent" />
<SolidColorBrush x:Key="AppBarItemDisabledForegroundThemeBrush" Color="#66000000" />
<SolidColorBrush x:Key="AppBarItemForegroundThemeBrush" Color="#FF000000" />
<SolidColorBrush x:Key="AppBarItemPointerOverBackgroundThemeBrush" Color="#3D000000" />
<SolidColorBrush x:Key="AppBarItemPointerOverForegroundThemeBrush" Color="#FF000000" />
<SolidColorBrush x:Key="AppBarItemPressedForegroundThemeBrush" Color="#FFFFFFFF" />

Shared resources

The control template uses these resources that are shared with other control templates. Changing these values will affect other controls that use these resources.

<FontFamily x:Key="ContentControlThemeFontFamily">Segoe UI</FontFamily>
<SolidColorBrush x:Key="FocusVisualBlackStrokeThemeBrush" Color="Black" />
<SolidColorBrush x:Key="FocusVisualWhiteStrokeThemeBrush" Color="White" />

Default style

<!-- Default style for Windows.UI.Xaml.Controls.AppBarButton -->
<Style TargetType="AppBarButton">
    <Setter Property="Foreground" Value="{ThemeResource AppBarItemForegroundThemeBrush}"/>
    <Setter Property="VerticalAlignment" Value="Top"/>
    <Setter Property="HorizontalAlignment" Value="Left"/>
    <Setter Property="FontFamily" Value="{ThemeResource ContentControlThemeFontFamily}"/>
    <Setter Property="FontWeight" Value="Normal"/>
    <Setter Property="Template">
      <Setter.Value>
        <ControlTemplate TargetType="AppBarButton">
          <Grid x:Name="RootGrid" Width="100" Background="Transparent">
            <VisualStateManager.VisualStateGroups>
              <VisualStateGroup x:Name="ApplicationViewStates">
                <!-- FullSize is used when we are in landscape or filled mode -->
                <VisualState x:Name="FullSize"/>
                <!-- Compact is used when we are in portrait or snapped mode -->
                <VisualState x:Name="Compact">
                  <Storyboard>
                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="TextLabel" Storyboard.TargetProperty="Visibility">
                      <DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed"/>
                    </ObjectAnimationUsingKeyFrames>
                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="RootGrid" Storyboard.TargetProperty="Width">
                      <DiscreteObjectKeyFrame KeyTime="0" Value="60"/>
                    </ObjectAnimationUsingKeyFrames>
                  </Storyboard>
                </VisualState>
              </VisualStateGroup>
              <VisualStateGroup x:Name="CommonStates">
                <VisualState x:Name="Normal"/>
                <VisualState x:Name="PointerOver">
                  <Storyboard>
                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="BackgroundEllipse" Storyboard.TargetProperty="Fill">
                      <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource AppBarItemPointerOverBackgroundThemeBrush}"/>
                    </ObjectAnimationUsingKeyFrames>
                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Content" Storyboard.TargetProperty="Foreground">
                      <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource AppBarItemPointerOverForegroundThemeBrush}"/>
                    </ObjectAnimationUsingKeyFrames>
                  </Storyboard>
                </VisualState>
                <VisualState x:Name="Pressed">
                  <Storyboard>
                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="OutlineEllipse" Storyboard.TargetProperty="Stroke">
                      <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource AppBarItemForegroundThemeBrush}"/>
                    </ObjectAnimationUsingKeyFrames>
                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="BackgroundEllipse" Storyboard.TargetProperty="Fill">
                      <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource AppBarItemForegroundThemeBrush}"/>
                    </ObjectAnimationUsingKeyFrames>
                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Content" Storyboard.TargetProperty="Foreground">
                      <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource AppBarItemPressedForegroundThemeBrush}"/>
                    </ObjectAnimationUsingKeyFrames>
                  </Storyboard>
                </VisualState>
                <VisualState x:Name="Disabled">
                  <Storyboard>
                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="OutlineEllipse" Storyboard.TargetProperty="Stroke">
                      <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource AppBarItemDisabledForegroundThemeBrush}"/>
                    </ObjectAnimationUsingKeyFrames>
                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Content" Storyboard.TargetProperty="Foreground">
                      <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource AppBarItemDisabledForegroundThemeBrush}"/>
                    </ObjectAnimationUsingKeyFrames>
                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="TextLabel" Storyboard.TargetProperty="Foreground">
                      <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource AppBarItemDisabledForegroundThemeBrush}"/>
                    </ObjectAnimationUsingKeyFrames>
                  </Storyboard>
                </VisualState>
              </VisualStateGroup>
              <VisualStateGroup x:Name="FocusStates">
                <VisualState x:Name="Focused">
                  <Storyboard>
                    <DoubleAnimation
                            Storyboard.TargetName="FocusVisualWhite"
                            Storyboard.TargetProperty="Opacity"
                            To="1"
                            Duration="0"/>
                    <DoubleAnimation
                            Storyboard.TargetName="FocusVisualBlack"
                            Storyboard.TargetProperty="Opacity"
                            To="1"
                            Duration="0"/>
                  </Storyboard>
                </VisualState>
                <VisualState x:Name="Unfocused" />
                <VisualState x:Name="PointerFocused" />
              </VisualStateGroup>
            </VisualStateManager.VisualStateGroups>

            <StackPanel VerticalAlignment="Top" Margin="0,14,0,13">
              <Grid Width="40" Height="40" Margin="0,0,0,5" HorizontalAlignment="Center">
                <Ellipse
                    x:Name="BackgroundEllipse"
                    UseLayoutRounding="False"
                    Width="40"
                    Height="40"
                    Fill="{ThemeResource AppBarItemBackgroundThemeBrush}"/>
                <Ellipse
                    x:Name="OutlineEllipse"
                    UseLayoutRounding="False"
                    Width="40"
                    Height="40"
                    Stroke="{ThemeResource AppBarItemForegroundThemeBrush}"
                    StrokeThickness="2" />
                <ContentPresenter
                    x:Name="Content"
                    Content="{TemplateBinding Icon}"
                    Foreground="{TemplateBinding Foreground}"
                    HorizontalAlignment="Stretch"
                    VerticalAlignment="Stretch"
                    AutomationProperties.AccessibilityView="Raw"/>
              </Grid>
              <TextBlock
                  x:Name="TextLabel"
                  Text="{TemplateBinding Label}"
                  Foreground="{ThemeResource AppBarItemForegroundThemeBrush}"
                  FontSize="12"
                  FontFamily="{TemplateBinding FontFamily}"
                  TextAlignment="Center"
                  Width="88"
                  TextWrapping="Wrap"/>
            </StackPanel>
            <Rectangle
                x:Name="FocusVisualWhite"
                IsHitTestVisible="False"
                Stroke="{ThemeResource FocusVisualWhiteStrokeThemeBrush}"
                StrokeEndLineCap="Square"
                StrokeDashArray="1,1"
                Opacity="0"
                StrokeDashOffset="1.5"/>
            <Rectangle
                x:Name="FocusVisualBlack"
                IsHitTestVisible="False"
                Stroke="{ThemeResource FocusVisualBlackStrokeThemeBrush}"
                StrokeEndLineCap="Square"
                StrokeDashArray="1,1"
                Opacity="0"
                StrokeDashOffset="0.5"/>
          </Grid>
        </ControlTemplate>
      </Setter.Value>
    </Setter>
  </Style>

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