我是WPF动画的新手。

我有一个带有4个按钮的WPF应用程序。这4个按钮具有动画,其中按钮的不透明度从0.0变为1.0,当鼠标悬停在该按钮上时会触发该不透明度。

我面临的问题是,即使鼠标滑过其他按钮几秒钟,这些按钮的动画也会被触发。

只有当鼠标停留在按钮上至少一秒钟时,我才能触发动画吗?

<Grid>
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="2*"/>
        <ColumnDefinition Width="22.5*"/>
        <ColumnDefinition Width="2*"/>
        <ColumnDefinition Width="22.5*"/>
        <ColumnDefinition Width="2*"/>
        <ColumnDefinition Width="22.5*"/>
        <ColumnDefinition Width="2*"/>
        <ColumnDefinition Width="22.5*"/>
        <ColumnDefinition Width="2*"/>
    </Grid.ColumnDefinitions>
    <Button x:Name="Button1" Grid.Column="1" Content="Button 1">
        <Button.Triggers>
            <EventTrigger RoutedEvent="Button.MouseEnter">
                <BeginStoryboard>
                    <Storyboard>
                        <DoubleAnimation From="0.0" To="1.0" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Button1" Duration="0:0:1"></DoubleAnimation>
                    </Storyboard>
                </BeginStoryboard>
            </EventTrigger>
        </Button.Triggers>
    </Button>
    <Button x:Name="Button2" Grid.Column="3" Content="Button2">
        <Button.Triggers>
            <EventTrigger RoutedEvent="Button.MouseEnter">
                <BeginStoryboard>
                    <Storyboard>
                        <DoubleAnimation From="0.0" To="1.0" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Button2" Duration="0:0:1"></DoubleAnimation>
                    </Storyboard>
                </BeginStoryboard>
            </EventTrigger>
        </Button.Triggers>
    </Button>
    <Button x:Name="Button3" Grid.Column="5" Content="Button 3">
        <Button.Triggers>
            <EventTrigger RoutedEvent="Button.MouseEnter">
                <BeginStoryboard>
                    <Storyboard>
                        <DoubleAnimation From="0.0" To="1.0" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Button3" Duration="0:0:1"></DoubleAnimation>
                    </Storyboard>
                </BeginStoryboard>
            </EventTrigger>
        </Button.Triggers>
    </Button>

    <Button x:Name="Button4" Grid.Column="7" Content="Button 4">
        <Button.Triggers>
            <EventTrigger RoutedEvent="Button.MouseEnter">
                <BeginStoryboard>
                    <Storyboard>
                        <DoubleAnimation From="0.0" To="1.0" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Button4" Duration="0:0:1"></DoubleAnimation>
                    </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>
            </Button.Triggers>
    </Button>
    </Grid>


提前致谢

最佳答案

我认为这不是您可以在XAML中执行的操作。在代码中,它看起来像这样:

XAML

<Button Width="50" Height="50" Name="MyButton"> </Button>




public partial class MainWindow : Window
    {
        private DispatcherTimer timer;
        private DoubleAnimation animation;
        private Storyboard sb;

        public MainWindow()
        {
            InitializeComponent();

            timer = new DispatcherTimer();
            timer.Interval = TimeSpan.FromSeconds(1);
            timer.Tick += timer_Tick;

            MyButton.MouseEnter += (sender, e) =>
                {
                    timer.Start();
                };

            MyButton.MouseLeave += (sender, e) =>
                {
                    timer.Stop();
                };

            animation = new DoubleAnimation();
            animation.From = 1;
            animation.To = 0;
            animation.Duration = new Duration(TimeSpan.FromMilliseconds(1000));

            Storyboard.SetTarget(animation, MyButton);
            Storyboard.SetTargetProperty( animation, new PropertyPath(OpacityProperty));

            sb = new Storyboard();
            sb.Children.Add(animation);
        }

        private void timer_Tick(object sender, EventArgs e)
        {
            timer.Stop();
            sb.Begin();
        }
    }

关于c# - 仅当鼠标悬停很长时间时才如何触发wpf动画?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/27537305/

10-10 18:39
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