XAML中的幻灯片动画

Question

我有一个选项卡控件，它停靠在停靠面板的右侧。选项卡控件的宽度设置为10，不透明度为0。当我将鼠标移动到选项卡控件上时，我想让选项卡控件的宽度更改为200，不透明度为100。然后当我将鼠标移开时，让选项卡控件恢复到其原始值。我无法弄清楚如何实现。可以有人帮忙吗？以下是我的标记，我试图首先显示选项卡控件。

<UserControl x:Class="Cordata.Mrs.MVVM.Views.Controls.SlideoutView"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
         mc:Ignorable="d">
<UserControl.Resources>
    <Storyboard x:Key="OnMouseEnter1">
        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Width)" Storyboard.TargetName="OptionsSlideout">
            <EasingDoubleKeyFrame KeyTime="0" Value="200"/>
        </DoubleAnimationUsingKeyFrames>
    </Storyboard>
</UserControl.Resources>
<UserControl.Triggers>
    <EventTrigger RoutedEvent="Mouse.MouseEnter">
        <BeginStoryboard Storyboard="{StaticResource OnMouseEnter1}"/>
    </EventTrigger>
</UserControl.Triggers>
<DockPanel HorizontalAlignment="Stretch">
    <TabControl Name="OptionsSlideout" TabStripPlacement="Bottom" Width="10" Margin="0,0,0,5" HorizontalAlignment="Stretch" DockPanel.Dock="Right" Opacity="0">
        <TabItem Header="Configure">
            <StackPanel Orientation="Vertical">
                <Button Name="ConfigurationBuilderButton" Width="80" Cursor="Hand" Click="ConfigurationBuilderButton_Click">
                    <Button.Template>
                        <ControlTemplate TargetType="Button">
                            <StackPanel>
                                <Image Source="/Images/ConfigurationBuilder.png" ToolTip="Run Configuration Builder" />
                                <TextBlock Text="Configuration Builder" TextWrapping="Wrap" FontWeight="Bold" />
                            </StackPanel>
                        </ControlTemplate>
                    </Button.Template>
                </Button>
                <Button Name="LoadConfigurationButton" Width="80" Cursor="Hand" Margin="0,20,0,0" Click="LoadConfigurationButton_Click">
                    <Button.Template>
                        <ControlTemplate TargetType="Button">
                            <StackPanel>
                                <Image Source="/Images/LoadCustomConfiguration.png" ToolTip="Load Custom Configuration" />
                                <TextBlock Text="Load Configuration" TextWrapping="Wrap" FontWeight="Bold" />
                            </StackPanel>
                        </ControlTemplate>
                    </Button.Template>
                </Button>
            </StackPanel>
        </TabItem>
        <TabItem Header="Help">
            <TextBlock Text="Help" />
        </TabItem>
    </TabControl>
</DockPanel>
</UserControl>

- Wannabe Coder

Answer 1

我需要添加一个矩形，这样DockPanel才能拥有一些主要内容，从而允许我们将TabControl停靠在右侧。您不需要使用任何资源，只需要按照以下方式设置Trigger的IsMouseOver属性即可。另外，由于我没有在我的测试项目中实现它们，所以我不得不删除你的处理程序。无论如何，这将按照您的需求完成:

<DockPanel HorizontalAlignment="Stretch">
    <TabControl Name="OptionsSlideout" TabStripPlacement="Bottom" Width="10" Margin="0,0,0,5" DockPanel.Dock="Right" Opacity="0.0">
        <TabControl.Style>
            <Style>
                <Style.Triggers>
                    <Trigger Property="Control.IsMouseOver" Value="True">
                        <Trigger.EnterActions>
                            <StopStoryboard BeginStoryboardName="CloseStoryBoard" />
                            <BeginStoryboard Name="OpenStoryBoard">
                                <Storyboard DecelerationRatio="0.8">
                                    <DoubleAnimation Storyboard.TargetProperty="(FrameworkElement.Width)" To="200.0" />
                                    <DoubleAnimation Storyboard.TargetProperty="Opacity" To="1.0" />
                                </Storyboard>
                            </BeginStoryboard>
                        </Trigger.EnterActions>
                        <Trigger.ExitActions>
                            <StopStoryboard BeginStoryboardName="OpenStoryBoard" />
                            <BeginStoryboard Name="CloseStoryBoard">
                                <Storyboard DecelerationRatio="0.8">
                                    <DoubleAnimation Storyboard.TargetProperty="(FrameworkElement.Width)" To="10.0" />
                                    <DoubleAnimation Storyboard.TargetProperty="Opacity" To="0.0" />
                                </Storyboard>
                            </BeginStoryboard>
                        </Trigger.ExitActions>
                    </Trigger>
                </Style.Triggers>
            </Style>
        </TabControl.Style>
        <TabItem Header="Configure">
            <StackPanel Orientation="Vertical">
                <Button Name="ConfigurationBuilderButton" Width="80" Cursor="Hand">
                    <Button.Template>
                        <ControlTemplate TargetType="Button">
                            <StackPanel>
                                <Image Source="/Images/ConfigurationBuilder.png" ToolTip="Run Configuration Builder" />
                                <TextBlock Text="Configuration Builder" TextWrapping="Wrap" FontWeight="Bold" />
                            </StackPanel>
                        </ControlTemplate>
                    </Button.Template>
                </Button>
                <Button Name="LoadConfigurationButton" Width="80" Cursor="Hand" Margin="0,20,0,0">
                    <Button.Template>
                        <ControlTemplate TargetType="Button">
                            <StackPanel>
                                <Image Source="/Images/LoadCustomConfiguration.png" ToolTip="Load Custom Configuration" />
                                <TextBlock Text="Load Configuration" TextWrapping="Wrap" FontWeight="Bold" />
                            </StackPanel>
                        </ControlTemplate>
                    </Button.Template>
                </Button>
            </StackPanel>
        </TabItem>
        <TabItem Header="Help">
            <TextBlock Text="Help" />
        </TabItem>
    </TabControl>
    <Rectangle Name="DummyContent" Fill="White" />
</DockPanel>

以后请注意 Mike，这里的代码有点过多。如果你只使用彩色矩形或边框元素，并说明你想要对这个边框进行动画处理，那么用户更容易理解你的问题。这样做可以避免缺少处理程序、图像、样式或资源元素等因素影响其他用户帮助你的速度。在发布之前简化你的问题总是好的，有时你甚至可以自己解决问题。无论如何，这不是问题，而且那段代码已经实现了你的要求。

- Sheridan

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简化它的好点子...我会记住这个建议，以备将来发布。感谢您提供的绝佳解决方案！ - Wannabe Coder