Question

我想修改所有ControlTemplate项的AppBarButton。是否可以在OnLaunched()或其他地方做这样的事情？

Windows.UI.Xaml.Controls.AppBarButton.TemplateProperty = Windows.UI.Xaml.Application.Current.Resources["DefaultAppBarButtonControlTemplate"] as Windows.UI.Xaml.Controls.ControlTemplate;

上面的代码不起作用（只读属性），但它应该证明我正在尝试做什么。覆盖完整的样式确实有效，但也只覆盖ControlTemplate？在我的情况下，我无法使用自定义控件。

Answer 1

如果要将样式应用于相同类型的应用中的所有控件，只需创建一个没有x:Key属性的样式，并将其放在Application.Resources或ResourceDictionary中在那里被引用。

作为示例，我已采用AppBarButton的默认样式并更改了标签和图标的位置。我删除了所有其他属性设置器，只更改了Template。 XAML样式属性按其加载顺序被覆盖：首先是系统默认值，然后是应用程序资源，然后是Page / Control资源和内联样式。因此，由于我只定义了Template属性，所以所有其他样式属性（例如Foreground）仍然是默认的系统属性。

样本XAML样式AppBarButton以反转文本和图标位置：

<Application.Resources>
    <Style TargetType="AppBarButton">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="AppBarButton">
                    <Grid
                        x:Name="Root"
                        MinWidth="{TemplateBinding MinWidth}"
                        MaxWidth="{TemplateBinding MaxWidth}"
                        Background="{TemplateBinding Background}">
                        <TextBlock
                            x:Name="OverflowTextLabel"
                            Margin="12,0,12,0"
                            Padding="0,5,0,7"
                            HorizontalAlignment="Stretch"
                            VerticalAlignment="Top"
                            FontFamily="{TemplateBinding FontFamily}"
                            FontSize="15"
                            Foreground="{TemplateBinding Foreground}"
                            Text="{TemplateBinding Label}"
                            TextAlignment="Left"
                            TextTrimming="Clip"
                            TextWrapping="NoWrap"
                            Visibility="Collapsed" />

                        <StackPanel x:Name="ContentRoot" MinHeight="{ThemeResource AppBarThemeCompactHeight}">
                            <TextBlock
                                x:Name="TextLabel"
                                Margin="0,0,0,6"
                                FontFamily="{TemplateBinding FontFamily}"
                                FontSize="12"
                                Foreground="{TemplateBinding Foreground}"
                                Text="{TemplateBinding Label}"
                                TextAlignment="Center"
                                TextWrapping="Wrap" />
                            <ContentPresenter
                                x:Name="Content"
                                Height="20"
                                Margin="0,14,0,4"
                                HorizontalAlignment="Stretch"
                                AutomationProperties.AccessibilityView="Raw"
                                Content="{TemplateBinding Icon}"
                                Foreground="{TemplateBinding Foreground}" />

                        </StackPanel>


                        <VisualStateManager.VisualStateGroups>
                            <VisualStateGroup x:Name="ApplicationViewStates">
                                <VisualState x:Name="FullSize" />
                                <VisualState x:Name="Compact">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="TextLabel" Storyboard.TargetProperty="Visibility">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed" />
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Overflow">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentRoot" Storyboard.TargetProperty="Visibility">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="OverflowTextLabel" Storyboard.TargetProperty="Visibility">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="Visible" />
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="OverflowWithToggleButtons">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentRoot" Storyboard.TargetProperty="Visibility">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="OverflowTextLabel" Storyboard.TargetProperty="Visibility">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="Visible" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="OverflowTextLabel" Storyboard.TargetProperty="Margin">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="38,0,12,0" />
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                            </VisualStateGroup>
                            <VisualStateGroup x:Name="CommonStates">
                                <VisualState x:Name="Normal">
                                    <Storyboard>
                                        <PointerUpThemeAnimation Storyboard.TargetName="OverflowTextLabel" />
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="PointerOver">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Root" Storyboard.TargetProperty="Background">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightListLowBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Content" Storyboard.TargetProperty="Foreground">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAltBaseHighBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="TextLabel" Storyboard.TargetProperty="Foreground">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAltBaseHighBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="OverflowTextLabel" Storyboard.TargetProperty="Foreground">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAltBaseHighBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <PointerUpThemeAnimation Storyboard.TargetName="OverflowTextLabel" />
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Pressed">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Root" Storyboard.TargetProperty="Background">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightListMediumBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Content" Storyboard.TargetProperty="Foreground">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAltBaseHighBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="TextLabel" Storyboard.TargetProperty="Foreground">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAltBaseHighBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="OverflowTextLabel" Storyboard.TargetProperty="Foreground">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAltBaseHighBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <PointerDownThemeAnimation Storyboard.TargetName="OverflowTextLabel" />
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Disabled">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Content" Storyboard.TargetProperty="Foreground">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlDisabledBaseMediumLowBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="TextLabel" Storyboard.TargetProperty="Foreground">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlDisabledBaseMediumLowBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="OverflowTextLabel" Storyboard.TargetProperty="Foreground">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlDisabledBaseMediumLowBrush}" />
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                            </VisualStateGroup>
                            <VisualStateGroup x:Name="InputModeStates">
                                <VisualState x:Name="InputModeDefault" />
                                <VisualState x:Name="TouchInputMode">
                                    <VisualState.Setters>
                                        <Setter Target="OverflowTextLabel.Padding" Value="0,11,0,13" />
                                    </VisualState.Setters>
                                </VisualState>
                            </VisualStateGroup>
                        </VisualStateManager.VisualStateGroups>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</Application.Resources>

交换默认ControlTemplate进行控制

1 个答案: