Иконка в виде большого пальца слайдера UWP - PullRequest
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Иконка в виде большого пальца слайдера UWP

0 голосов
/ 27 апреля 2018

В моем приложении UWP у меня есть ползунок, для которого я хочу иметь иконку в виде большого пальца. После некоторой игры с шаблоном слайдера, я не умнее, чем раньше. Кто-нибудь знает, чтобы решить мою проблему?

1 Ответ

0 голосов
/ 27 апреля 2018

Ключ в том, что шаблон слайдера содержит другой элемент управления Thumb, который имеет специальный стиль под названием SliderThumbStyle, который является частью шаблона Slider по умолчанию: 

<Style x:Key="SliderThumbStyle" TargetType="Thumb">
    <Setter Property="BorderThickness" Value="0"/>
    <Setter Property="Background" Value="{ThemeResource SliderThumbBackground}"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="Thumb">
                 <Border Background="{TemplateBinding Background}"
                        BorderBrush="{TemplateBinding BorderBrush}"
                        BorderThickness="{TemplateBinding BorderThickness}"
                        CornerRadius="4" />                              
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

Как видите, реализация по умолчанию использует простой и простой Border с некоторым радиусом угла для отображения большого пальца. Однако преимущество XAML заключается в том, что вы можете поместить в ControlTemplate:

все, что захотите. 
<ControlTemplate TargetType="Thumb">
    <Image Source="Assets/Thumb.png" />
</ControlTemplate>

Это отобразит изображение вместо Border, которое вы хотели. Если у вас есть монохромная иконка, вы можете даже использовать BitmapIcon: 

<ControlTemplate TargetType="Thumb">
    <BitmapIcon UriSource="Assets/Thumb.png" />
</ControlTemplate>

Это полезно, потому что большой палец затем автоматически использует системный цвет акцента в качестве наложения.

Однако есть еще одно изменение, которое вам придется сделать: большой палец по умолчанию очень мал, поэтому вы можете изменить его размер, чтобы он соответствовал вашему значку. Найдите шаблон слайдера по умолчанию для HorizontalThumb и VerticalThumb и установите их Height и Width: 

<Thumb x:Name="HorizontalThumb" ... Height="24" Width="24"/>

<Thumb x:Name="VerticalThumb" ... Height="24" Width="24"/>

Custom thumb

Полный стиль 

<Style x:Key="IconSliderStyle" TargetType="Slider">
    <Setter Property="Background" Value="{ThemeResource SliderTrackFill}"/>
    <Setter Property="BorderThickness" Value="{ThemeResource SliderBorderThemeThickness}"/>
    <Setter Property="Foreground" Value="{ThemeResource SliderTrackValueFill}"/>
    <Setter Property="FontFamily" Value="{ThemeResource ContentControlThemeFontFamily}"/>
    <Setter Property="FontSize" Value="{ThemeResource ControlContentThemeFontSize}"/>
    <Setter Property="ManipulationMode" Value="None"/>
    <Setter Property="UseSystemFocusVisuals" Value="True"/>
    <Setter Property="FocusVisualMargin" Value="-7,0,-7,0"/>
    <Setter Property="IsFocusEngagementEnabled" Value="True"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="Slider">
                <Grid Margin="{TemplateBinding Padding}">
                    <Grid.Resources>
                        <Style x:Key="SliderThumbStyle" TargetType="Thumb">
                            <Setter Property="BorderThickness" Value="0"/>
                            <Setter Property="Background" Value="{ThemeResource SliderThumbBackground}"/>
                            <Setter Property="Template">
                                <Setter.Value>
                                    <ControlTemplate TargetType="Thumb">
                                        <Image Source="Assets/Thumb.png" />
                                    </ControlTemplate>
                                </Setter.Value>
                            </Setter>
                        </Style>
                    </Grid.Resources>
                    <Grid.RowDefinitions>
                        <RowDefinition Height="Auto"/>
                        <RowDefinition Height="*"/>
                    </Grid.RowDefinitions>
                    <VisualStateManager.VisualStateGroups>
                        <VisualStateGroup x:Name="CommonStates">
                            <VisualState x:Name="Normal"/>
                            <VisualState x:Name="Pressed">
                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalTrackRect" Storyboard.TargetProperty="Fill">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderTrackFillPressed}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalTrackRect" Storyboard.TargetProperty="Fill">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderTrackFillPressed}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalThumb" Storyboard.TargetProperty="Background">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderThumbBackgroundPressed}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalThumb" Storyboard.TargetProperty="Background">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderThumbBackgroundPressed}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="SliderContainer" Storyboard.TargetProperty="Background">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderContainerBackgroundPressed}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalDecreaseRect" Storyboard.TargetProperty="Fill">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderTrackValueFillPressed}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalDecreaseRect" Storyboard.TargetProperty="Fill">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderTrackValueFillPressed}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="Disabled">
                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="HeaderContentPresenter" Storyboard.TargetProperty="Foreground">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderHeaderForegroundDisabled}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalDecreaseRect" Storyboard.TargetProperty="Fill">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderTrackValueFillDisabled}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalTrackRect" Storyboard.TargetProperty="Fill">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderTrackFillDisabled}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalDecreaseRect" Storyboard.TargetProperty="Fill">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderTrackValueFillDisabled}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalTrackRect" Storyboard.TargetProperty="Fill">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderTrackFillDisabled}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalThumb" Storyboard.TargetProperty="Background">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderThumbBackgroundDisabled}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalThumb" Storyboard.TargetProperty="Background">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderThumbBackgroundDisabled}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="TopTickBar" Storyboard.TargetProperty="Fill">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderTickBarFillDisabled}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="BottomTickBar" Storyboard.TargetProperty="Fill">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderTickBarFillDisabled}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="LeftTickBar" Storyboard.TargetProperty="Fill">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderTickBarFillDisabled}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="RightTickBar" Storyboard.TargetProperty="Fill">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderTickBarFillDisabled}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="SliderContainer" Storyboard.TargetProperty="Background">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderContainerBackgroundDisabled}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="PointerOver">
                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalTrackRect" Storyboard.TargetProperty="Fill">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderTrackFillPointerOver}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalTrackRect" Storyboard.TargetProperty="Fill">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderTrackFillPointerOver}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalThumb" Storyboard.TargetProperty="Background">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderThumbBackgroundPointerOver}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalThumb" Storyboard.TargetProperty="Background">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderThumbBackgroundPointerOver}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="SliderContainer" Storyboard.TargetProperty="Background">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderContainerBackgroundPointerOver}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalDecreaseRect" Storyboard.TargetProperty="Fill">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderTrackValueFillPointerOver}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalDecreaseRect" Storyboard.TargetProperty="Fill">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SliderTrackValueFillPointerOver}"/>
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                        </VisualStateGroup>
                        <VisualStateGroup x:Name="FocusEngagementStates">
                            <VisualState x:Name="FocusDisengaged"/>
                            <VisualState x:Name="FocusEngagedHorizontal">
                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="SliderContainer" Storyboard.TargetProperty="(Control.IsTemplateFocusTarget)">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="False"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalThumb" Storyboard.TargetProperty="(Control.IsTemplateFocusTarget)">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="True"/>
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="FocusEngagedVertical">
                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="SliderContainer" Storyboard.TargetProperty="(Control.IsTemplateFocusTarget)">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="False"/>
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalThumb" Storyboard.TargetProperty="(Control.IsTemplateFocusTarget)">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="True"/>
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                        </VisualStateGroup>
                    </VisualStateManager.VisualStateGroups>
                    <ContentPresenter x:Name="HeaderContentPresenter" ContentTemplate="{TemplateBinding HeaderTemplate}" Content="{TemplateBinding Header}" FontWeight="{ThemeResource SliderHeaderThemeFontWeight}" Foreground="{ThemeResource SliderHeaderForeground}" Margin="{ThemeResource SliderHeaderThemeMargin}" TextWrapping="Wrap" Visibility="Collapsed" x:DeferLoadStrategy="Lazy"/>
                    <Grid x:Name="SliderContainer" Background="{ThemeResource SliderContainerBackground}" Control.IsTemplateFocusTarget="True" Grid.Row="1">
                        <Grid x:Name="HorizontalTemplate" MinHeight="44">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="Auto"/>
                                <ColumnDefinition Width="Auto"/>
                                <ColumnDefinition Width="*"/>
                            </Grid.ColumnDefinitions>
                            <Grid.RowDefinitions>
                                <RowDefinition Height="18"/>
                                <RowDefinition Height="Auto"/>
                                <RowDefinition Height="18"/>
                            </Grid.RowDefinitions>
                            <Rectangle x:Name="HorizontalTrackRect" Grid.ColumnSpan="3" Fill="{TemplateBinding Background}" Height="{ThemeResource SliderTrackThemeHeight}" Grid.Row="1"/>
                            <Rectangle x:Name="HorizontalDecreaseRect" Fill="{TemplateBinding Foreground}" Grid.Row="1"/>
                            <TickBar x:Name="TopTickBar" Grid.ColumnSpan="3" Fill="{ThemeResource SliderTickBarFill}" Height="{ThemeResource SliderOutsideTickBarThemeHeight}" Margin="0,0,0,4" VerticalAlignment="Bottom" Visibility="Collapsed"/>
                            <TickBar x:Name="HorizontalInlineTickBar" Grid.ColumnSpan="3" Fill="{ThemeResource SliderInlineTickBarFill}" Height="{ThemeResource SliderTrackThemeHeight}" Grid.Row="1" Visibility="Collapsed"/>
                            <TickBar x:Name="BottomTickBar" Grid.ColumnSpan="3" Fill="{ThemeResource SliderTickBarFill}" Height="{ThemeResource SliderOutsideTickBarThemeHeight}" Margin="0,4,0,0" Grid.Row="2" VerticalAlignment="Top" Visibility="Collapsed"/>
                            <Thumb x:Name="HorizontalThumb" AutomationProperties.AccessibilityView="Raw" Grid.Column="1" DataContext="{TemplateBinding Value}" FocusVisualMargin="-14,-6,-14,-6" Height="24" Grid.RowSpan="3" Grid.Row="0" Style="{StaticResource SliderThumbStyle}" Width="24"/>
                        </Grid>
                        <Grid x:Name="VerticalTemplate" MinWidth="44" Visibility="Collapsed">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="18"/>
                                <ColumnDefinition Width="Auto"/>
                                <ColumnDefinition Width="18"/>
                            </Grid.ColumnDefinitions>
                            <Grid.RowDefinitions>
                                <RowDefinition Height="*"/>
                                <RowDefinition Height="Auto"/>
                                <RowDefinition Height="Auto"/>
                            </Grid.RowDefinitions>
                            <Rectangle x:Name="VerticalTrackRect" Grid.Column="1" Fill="{TemplateBinding Background}" Grid.RowSpan="3" Width="{ThemeResource SliderTrackThemeHeight}"/>
                            <Rectangle x:Name="VerticalDecreaseRect" Grid.Column="1" Fill="{TemplateBinding Foreground}" Grid.Row="2"/>
                            <TickBar x:Name="LeftTickBar" Fill="{ThemeResource SliderTickBarFill}" HorizontalAlignment="Right" Margin="0,0,4,0" Grid.RowSpan="3" Visibility="Collapsed" Width="{ThemeResource SliderOutsideTickBarThemeHeight}"/>
                            <TickBar x:Name="VerticalInlineTickBar" Grid.Column="1" Fill="{ThemeResource SliderInlineTickBarFill}" Grid.RowSpan="3" Visibility="Collapsed" Width="{ThemeResource SliderTrackThemeHeight}"/>
                            <TickBar x:Name="RightTickBar" Grid.Column="2" Fill="{ThemeResource SliderTickBarFill}" HorizontalAlignment="Left" Margin="4,0,0,0" Grid.RowSpan="3" Visibility="Collapsed" Width="{ThemeResource SliderOutsideTickBarThemeHeight}"/>
                            <Thumb x:Name="VerticalThumb" AutomationProperties.AccessibilityView="Raw" Grid.ColumnSpan="3" Grid.Column="0" DataContext="{TemplateBinding Value}" FocusVisualMargin="-6,-14,-6,-14" Height="24" Grid.Row="1" Style="{StaticResource SliderThumbStyle}" Width="24"/>
                        </Grid>
                    </Grid>
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>
...