文本框周圍的部分邊框

Question

在我的手機上的Spotify應用程序的此截圖中，您可以看到他們在底部左側和右側做了部分邊框。我找不到任何具體的財產來模仿，所以有人可以向我解釋他們是如何做到的？

我試着邊境半徑玩，但除非我做錯事，我不認爲這是簡單的。他們只是在它下面有一個自定義形狀？

Answer 1

更好的辦法是再整的TextBox有兩個左和右側爲Rectangle，另一側爲模仿半邊框的底部。

<Rectangle x:Name="BottomLine" Grid.ColumnSpan="2" Grid.Row="1" Grid.RowSpan="1" VerticalAlignment="Bottom" Height="2" Fill="{TemplateBinding BorderBrush}" /> 
<Rectangle x:Name="LeftVerticalLine" HorizontalAlignment="Left" Height="4" Margin="0,0,0,2" Grid.Row="1" Stretch="Fill" UseLayoutRounding="True" VerticalAlignment="Bottom" Width="2" RenderTransformOrigin="0.5,1" Fill="{TemplateBinding BorderBrush}"> 
    <Rectangle.RenderTransform> 
     <CompositeTransform /> 
    </Rectangle.RenderTransform> 
</Rectangle> 
<Rectangle x:Name="RightVerticalLine" HorizontalAlignment="Right" Height="4" Margin="0,0,0,2" Grid.Row="1" Stretch="Fill" UseLayoutRounding="True" VerticalAlignment="Bottom" Width="2" RenderTransformOrigin="0.5,1" Grid.ColumnSpan="2" Fill="{TemplateBinding BorderBrush}"> 
    <Rectangle.RenderTransform> 
     <CompositeTransform /> 
    </Rectangle.RenderTransform> 
</Rectangle> 

爲什麼它更好？因爲它們現在是TextBox模板的組件，所以您可以將動畫應用到視覺狀態以獲得更好的用戶體驗。

例如，我想用ScaleTransform按比例放大左右Rectangle■當該TextBox爲Focused方式告訴用戶他們正在與此控件交互。

下面是完整的風格。 :)

<Style x:Key="HalfBorderTextBoxStyle" TargetType="TextBox"> 
    <Setter Property="FontFamily" Value="{ThemeResource ContentControlThemeFontFamily}" /> 
    <Setter Property="FontSize" Value="{ThemeResource ControlContentThemeFontSize}" /> 
    <Setter Property="MinWidth" Value="{ThemeResource TextControlThemeMinWidth}" /> 
    <Setter Property="MinHeight" Value="{ThemeResource TextControlThemeMinHeight}" /> 
    <Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Hidden" /> 
    <Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Hidden" /> 
    <Setter Property="ScrollViewer.IsDeferredScrollingEnabled" Value="False" /> 
    <Setter Property="BorderThickness" Value="0,0,0,2" /> 
    <Setter Property="Padding" Value="8,5" /> 
    <Setter Property="Foreground"> 
     <Setter.Value> 
      <SolidColorBrush Color="White" /> 
     </Setter.Value> 
    </Setter> 
    <Setter Property="Background"> 
     <Setter.Value> 
      <SolidColorBrush Color="Transparent" /> 
     </Setter.Value> 
    </Setter> 
    <Setter Property="BorderBrush"> 
     <Setter.Value> 
      <SolidColorBrush Color="#FF8FBE19" /> 
     </Setter.Value> 
    </Setter> 
    <Setter Property="SelectionHighlightColor"> 
     <Setter.Value> 
      <SolidColorBrush Color="#FF8FBE19" /> 
     </Setter.Value> 
    </Setter> 
    <Setter Property="Template"> 
     <Setter.Value> 
      <ControlTemplate TargetType="TextBox"> 
       <Grid> 
        <Grid.Resources> 
         <Style x:Name="DeleteButtonStyle" TargetType="Button"> 
          <Setter Property="Template"> 
           <Setter.Value> 
            <ControlTemplate TargetType="Button"> 
             <Grid x:Name="ButtonLayoutGrid" BorderBrush="{ThemeResource TextBoxButtonBorderThemeBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{ThemeResource TextBoxButtonBackgroundThemeBrush}"> 
              <VisualStateManager.VisualStateGroups> 
               <VisualStateGroup x:Name="CommonStates"> 
                <VisualState x:Name="Normal" /> 
                <VisualState x:Name="PointerOver"> 
                 <Storyboard> 
                  <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="GlyphElement"> 
                   <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAccentBrush}" /> 
                  </ObjectAnimationUsingKeyFrames> 
                 </Storyboard> 
                </VisualState> 
                <VisualState x:Name="Pressed"> 
                 <Storyboard> 
                  <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="ButtonLayoutGrid"> 
                   <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAccentBrush}" /> 
                  </ObjectAnimationUsingKeyFrames> 
                  <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="GlyphElement"> 
                   <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAltChromeWhiteBrush}" /> 
                  </ObjectAnimationUsingKeyFrames> 
                 </Storyboard> 
                </VisualState> 
                <VisualState x:Name="Disabled"> 
                 <Storyboard> 
                  <DoubleAnimation Duration="0" To="0" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="ButtonLayoutGrid" /> 
                 </Storyboard> 
                </VisualState> 
               </VisualStateGroup> 
              </VisualStateManager.VisualStateGroups> 
              <TextBlock x:Name="GlyphElement" AutomationProperties.AccessibilityView="Raw" Foreground="{ThemeResource SystemControlForegroundChromeBlackMediumBrush}" FontStyle="Normal" FontSize="12" FontFamily="{ThemeResource SymbolThemeFontFamily}" HorizontalAlignment="Center" Text="&#xE10A;" VerticalAlignment="Center" /> 
             </Grid> 
            </ControlTemplate> 
           </Setter.Value> 
          </Setter> 
         </Style> 
        </Grid.Resources> 
        <Grid.ColumnDefinitions> 
         <ColumnDefinition Width="*" /> 
         <ColumnDefinition Width="Auto" /> 
        </Grid.ColumnDefinitions> 
        <Grid.RowDefinitions> 
         <RowDefinition Height="Auto" /> 
         <RowDefinition Height="*" /> 
        </Grid.RowDefinitions> 
        <VisualStateManager.VisualStateGroups> 
         <VisualStateGroup x:Name="CommonStates"> 
          <VisualStateGroup.Transitions> 
           <VisualTransition GeneratedDuration="0:0:0.2" To="Focused"> 
            <VisualTransition.GeneratedEasingFunction> 
             <ExponentialEase EasingMode="EaseIn" /> 
            </VisualTransition.GeneratedEasingFunction> 
            <Storyboard> 
             <DoubleAnimation Duration="0:0:0.2" To="1.4" Storyboard.TargetProperty="(UIElement.RenderTransform).(CompositeTransform.ScaleY)" Storyboard.TargetName="LeftVerticalLine" d:IsOptimized="True" /> 
             <DoubleAnimation Duration="0:0:0.2" To="1.4" Storyboard.TargetProperty="(UIElement.RenderTransform).(CompositeTransform.ScaleY)" Storyboard.TargetName="RightVerticalLine" d:IsOptimized="True" /> 
            </Storyboard> 
           </VisualTransition> 
           <VisualTransition From="Focused" GeneratedDuration="0:0:0.2"> 
            <VisualTransition.GeneratedEasingFunction> 
             <ExponentialEase EasingMode="EaseOut" /> 
            </VisualTransition.GeneratedEasingFunction> 
            <Storyboard> 
             <DoubleAnimation Duration="0:0:0.2" To="1" Storyboard.TargetProperty="(UIElement.RenderTransform).(CompositeTransform.ScaleY)" Storyboard.TargetName="LeftVerticalLine" d:IsOptimized="True" /> 
             <DoubleAnimation Duration="0:0:0.2" To="1" Storyboard.TargetProperty="(UIElement.RenderTransform).(CompositeTransform.ScaleY)" Storyboard.TargetName="RightVerticalLine" d:IsOptimized="True" /> 
            </Storyboard> 
           </VisualTransition> 
          </VisualStateGroup.Transitions> 
          <VisualState x:Name="Disabled"> 
           <VisualState.Setters> 
            <Setter Target="BorderElement.(UIElement.Opacity)" Value="1" /> 
           </VisualState.Setters> 
           <Storyboard> 
            <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="HeaderContentPresenter"> 
             <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlDisabledBaseLowBrush}" /> 
            </ObjectAnimationUsingKeyFrames> 
            <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="BorderBrush" Storyboard.TargetName="BottomLine"> 
             <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlDisabledBaseLowBrush}" /> 
            </ObjectAnimationUsingKeyFrames> 
            <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="ContentElement"> 
             <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlDisabledChromeDisabledLowBrush}" /> 
            </ObjectAnimationUsingKeyFrames> 
           </Storyboard> 
          </VisualState> 
          <VisualState x:Name="Normal" /> 
          <VisualState x:Name="PointerOver" /> 
          <VisualState x:Name="Focused"> 
           <VisualState.Setters> 
            <Setter Target="LeftVerticalLine.(UIElement.Opacity)" Value="1" /> 
            <Setter Target="RightVerticalLine.(UIElement.Opacity)" Value="1" /> 
            <Setter Target="LeftVerticalLine.(UIElement.RenderTransform).(CompositeTransform.ScaleY)" Value="1.4" /> 
            <Setter Target="RightVerticalLine.(UIElement.RenderTransform).(CompositeTransform.ScaleY)" Value="1.4" /> 
           </VisualState.Setters> 
           <Storyboard> 
            <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity" Storyboard.TargetName="BackgroundElement"> 
             <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextControlBackgroundFocusedOpacity}" /> 
            </ObjectAnimationUsingKeyFrames> 
           </Storyboard> 
          </VisualState> 
         </VisualStateGroup> 
         <VisualStateGroup x:Name="ButtonStates"> 
          <VisualState x:Name="ButtonVisible"> 
           <Storyboard> 
            <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="DeleteButton"> 
             <DiscreteObjectKeyFrame KeyTime="0"> 
              <DiscreteObjectKeyFrame.Value> 
               <Visibility>Visible</Visibility> 
              </DiscreteObjectKeyFrame.Value> 
             </DiscreteObjectKeyFrame> 
            </ObjectAnimationUsingKeyFrames> 
           </Storyboard> 
          </VisualState> 
          <VisualState x:Name="ButtonCollapsed" /> 
         </VisualStateGroup> 
        </VisualStateManager.VisualStateGroups> 
        <Border x:Name="BackgroundElement" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" Margin="{TemplateBinding BorderThickness}" Opacity="{ThemeResource TextControlBackgroundRestOpacity}" Grid.Row="1" Grid.RowSpan="1" /> 
        <Rectangle x:Name="BottomLine" Grid.ColumnSpan="2" Grid.Row="1" Grid.RowSpan="1" VerticalAlignment="Bottom" Height="2" Fill="{TemplateBinding BorderBrush}" /> 
        <Rectangle x:Name="LeftVerticalLine" HorizontalAlignment="Left" Height="4" Margin="0,0,0,2" Grid.Row="1" Stretch="Fill" UseLayoutRounding="True" VerticalAlignment="Bottom" Width="2" RenderTransformOrigin="0.5,1" Fill="{TemplateBinding BorderBrush}"> 
         <Rectangle.RenderTransform> 
          <CompositeTransform /> 
         </Rectangle.RenderTransform> 
        </Rectangle> 
        <Rectangle x:Name="RightVerticalLine" HorizontalAlignment="Right" Height="4" Margin="0,0,0,2" Grid.Row="1" Stretch="Fill" UseLayoutRounding="True" VerticalAlignment="Bottom" Width="2" RenderTransformOrigin="0.5,1" Grid.ColumnSpan="2" Fill="{TemplateBinding BorderBrush}"> 
         <Rectangle.RenderTransform> 
          <CompositeTransform /> 
         </Rectangle.RenderTransform> 
        </Rectangle> 
        <ContentPresenter x:Name="HeaderContentPresenter" Grid.ColumnSpan="2" ContentTemplate="{TemplateBinding HeaderTemplate}" Content="{TemplateBinding Header}" Foreground="{ThemeResource SystemControlForegroundBaseHighBrush}" FontWeight="Normal" Margin="0,0,0,8" Grid.Row="0" Visibility="Collapsed" x:DeferLoadStrategy="Lazy" /> 
        <ScrollViewer x:Name="ContentElement" AutomationProperties.AccessibilityView="Raw" HorizontalScrollMode="{TemplateBinding ScrollViewer.HorizontalScrollMode}" HorizontalScrollBarVisibility="{TemplateBinding ScrollViewer.HorizontalScrollBarVisibility}" IsTabStop="False" IsHorizontalRailEnabled="{TemplateBinding ScrollViewer.IsHorizontalRailEnabled}" IsVerticalRailEnabled="{TemplateBinding ScrollViewer.IsVerticalRailEnabled}" IsDeferredScrollingEnabled="{TemplateBinding ScrollViewer.IsDeferredScrollingEnabled}" Margin="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}" Grid.Row="1" VerticalScrollBarVisibility="{TemplateBinding ScrollViewer.VerticalScrollBarVisibility}" VerticalScrollMode="{TemplateBinding ScrollViewer.VerticalScrollMode}" ZoomMode="Disabled" /> 
        <ContentControl x:Name="PlaceholderTextContentPresenter" Grid.ColumnSpan="2" Content="{TemplateBinding PlaceholderText}" Foreground="{ThemeResource ButtonBackgroundThemeBrush}" IsHitTestVisible="False" IsTabStop="False" Margin="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}" Grid.Row="1" /> 
        <Button x:Name="DeleteButton" BorderThickness="{TemplateBinding BorderThickness}" Grid.Column="1" FontSize="{TemplateBinding FontSize}" IsTabStop="False" Margin="{ThemeResource HelperButtonThemePadding}" MinWidth="34" Grid.Row="1" Style="{StaticResource DeleteButtonStyle}" Visibility="Collapsed" VerticalAlignment="Stretch" /> 
       </Grid> 
      </ControlTemplate> 
     </Setter.Value> 
    </Setter> 
</Style> 

Answer 2

你可以做到這一點使用LinearGradientBrush和四個GradientStop點：

<TextBox Background="WhiteSmoke" BorderThickness="3" Height="50" Width="200" VerticalAlignment="Center" HorizontalAlignment="Center"> 
     <TextBox.BorderBrush> 
      <LinearGradientBrush EndPoint="1,1" StartPoint="1,0"> 
       <GradientStop Color="White" Offset="0"/> 
       <GradientStop Color="White" Offset="0.75"/> 
       <GradientStop Color="Green" Offset="0.75"/> 
       <GradientStop Color="Green" Offset="1"/> 
      </LinearGradientBrush> 
     </TextBox.BorderBrush> 
    </TextBox> 

這裏的結果