我正在开发一个项目,需要帮助才能找到一个仅限Windows 8 XAML的解决方案,以便在将鼠标悬停在其他控件上时切换控件的可见性。控件可以是一个按钮或任何Windows8控件,代码需要在XAML中,因为我的所有逻辑都在XAML中。 我尝试了很多XAML解决方案,但我想我错过了一些东西。在我的第一次尝试中,我编写了一个事件触发器,但是字符串无法转换为可见性,因此以下代码在执行时崩溃。
微软的任何人或任何专家都可以帮助我。我非常感谢你的帮助。我正在寻找一个解决方案,在代码隐藏中不需要任何代码,它应该是完整的XAML代码。
<Page
x:Class="App1.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:App1"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<StackPanel Background="{StaticResource ApplicationPageBackgroundThemeBrush}">
<Button Margin="5" x:Name="btn1">Button 1</Button>
<Button Margin="5" x:Name="btn2">
<Button.Triggers>
<EventTrigger RoutedEvent="Button.GotFocus">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="btn1" Storyboard.TargetProperty="Button.Visibility" To="Collapsed" Duration="0:0:1"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
<EventTrigger RoutedEvent="Button.LostFocus">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="btn1" Storyboard.TargetProperty="Button.Visibility" To="Visible" Duration="0:0:1"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Button.Triggers>
Button 2
</Button>
<Button Margin="5" x:Name="btn3">Button 3</Button>
</StackPanel>
</Page>
答案 0 :(得分:0)
您无法使用DoubleAnimation控制可见性,因为可见性不是双精度。您应该使用ObjectAnimationUsingKeyFrames:
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="btn1">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Collapsed</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
我还建议使用行为和视觉状态来使您的XAML更加设计友好。
答案 1 :(得分:0)
如果您只想翻转Visibility
,可以使用绑定到IsPointerOver
属性:
<StackPanel Background="{StaticResource ApplicationPageBackgroundThemeBrush}">
<StackPanel.Resources>
<local:BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter"/>
</StackPanel.Resources>
<Button Margin="5" x:Name="btn1">Button 1</Button>
<Button Margin="5" x:Name="btn2" Visibility="{Binding ElementName=btn1, Path=IsPointerOver, Converter={StaticResource BooleanToVisibilityConverter}}">
Button 2
</Button>
</StackPanel>
您需要添加BooleanToVisibilityConverter
的代码,因为它不像在WPF中那样内置。
答案 2 :(得分:0)
我不确定你可以将EventTrigger与RoutedEvent一起使用。可能会有用吗
<Page.Resources>
<Style x:Key="TagAppBarButtonStyle" TargetType="Button" BasedOn="{StaticResource AppBarButtonStyle}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Border x:Name="AppButton" Width="{TemplateBinding Width}" Height="{TemplateBinding Height}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal">
<Storyboard>
<Storyboard>
<DoubleAnimation Duration="0" To="0" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="tbName" />
</Storyboard>
</Storyboard>
</VisualState>
<VisualState x:Name="PointerOver">
<Storyboard>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="tbName" />
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid Width="100">
<Rectangle Width="{TemplateBinding Width}" Height="{TemplateBinding Height}" Fill="Transparent"/>
<TextBlock Text="Button 2" x:Name="tbName" />
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Page.Resources>
<Grid>
<StackPanel Background="{StaticResource ApplicationPageBackgroundThemeBrush}">
<Button Margin="5" x:Name="btn1" Content="Button 1" />
<Button Margin="5" x:Name="btn2" Style="{StaticResource TagAppBarButtonStyle}" />
<Button Margin="5" x:Name="btn3" Content="Button 3" />
</StackPanel>
</Grid>
答案 3 :(得分:0)
框架中有许多内置转换器,包括BooleanToVisibilityConverter。