Question

我正在处理具有巨大性能问题的WPF应用程序。当用户在屏幕之间移动时，当下一个屏幕淡入并从左侧滑入时，应该有当前屏幕的快速动画淡出和缩小。这很糟糕。

现在，我遇到了 EntranceThemeTransitionBehavior （http://msdn.microsoft.com/EN-US/library/windows/apps/windows.ui.xaml.media.animation.entrancethemetransition.aspx），但有两件事我不明白：

这件事情应该更快吗？
它可以用于非Windows应用商店应用吗？（只是普通的旧桌面应用程序）

在WPF中创建平滑淡入淡出+过渡的最佳做法/建议吗？

今天我用一个简单的故事板和不透明动画来做这件事。这是一个例子：

当我在2个屏幕上并行运行时，衰落非常慢。

    <Grid x:Name="SlideShow" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" >
        <Grid.Resources>
            <Storyboard x:Key="Slide" RepeatBehavior="Forever" Timeline.DesiredFrameRate="30" >

                <DoubleAnimationUsingKeyFrames
                    BeginTime="00:00:7"
                    Storyboard.TargetName="Ad2"
                    Storyboard.TargetProperty="Opacity">

                    <SplineDoubleKeyFrame KeyTime="0:0:0.25" Value="1" />
                </DoubleAnimationUsingKeyFrames>


                <DoubleAnimationUsingKeyFrames
                    BeginTime="00:00:14.75"
                    Storyboard.TargetName="Ad3"
                    Storyboard.TargetProperty="Opacity">
                    <SplineDoubleKeyFrame KeyTime="0:0:0.25" Value="1" />
                </DoubleAnimationUsingKeyFrames>

                <DoubleAnimationUsingKeyFrames
                    BeginTime="00:00:24.25"
                    Storyboard.TargetName="Ad4"
                    Storyboard.TargetProperty="Opacity">
                    <SplineDoubleKeyFrame KeyTime="0:0:0.25" Value="1" />
                </DoubleAnimationUsingKeyFrames>


                <DoubleAnimationUsingKeyFrames
                    BeginTime="00:00:32.75"
                    Storyboard.TargetName="Ad2"
                    Storyboard.TargetProperty="Opacity">
                    <SplineDoubleKeyFrame KeyTime="0:0:0.25" Value="0" />
                </DoubleAnimationUsingKeyFrames>
                <DoubleAnimationUsingKeyFrames
                    BeginTime="00:00:32.75"
                    Storyboard.TargetName="Ad3"
                    Storyboard.TargetProperty="Opacity">
                    <SplineDoubleKeyFrame KeyTime="0:0:0.25" Value="0" />
                </DoubleAnimationUsingKeyFrames>
                <DoubleAnimationUsingKeyFrames
                    BeginTime="00:00:32.75"
                    Storyboard.TargetName="Ad4"
                    Storyboard.TargetProperty="Opacity">
                    <SplineDoubleKeyFrame KeyTime="0:0:0.25" Value="0" />
                </DoubleAnimationUsingKeyFrames>
            </Storyboard>
        </Grid.Resources>

        <Grid.Triggers>
            <EventTrigger RoutedEvent="FrameworkElement.Loaded">
                <BeginStoryboard Storyboard="{StaticResource Slide}" />
            </EventTrigger>
        </Grid.Triggers>

        <Image  Source="/MyApp;component/Resources/Images/SecondScreen/1.png"  Name="Ad1" Opacity="1" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>
        <Image  Source="/MyApp;component/Resources/Images/SecondScreen/2.png"  Name="Ad2" Opacity="0" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>
        <Image  Source="/MyApp;component/Resources/Images/SecondScreen/3.png"  Name="Ad3" Opacity="0" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>
        <Image  Source="/MyApp;component/Resources/Images/SecondScreen/4.png"  Name="Ad4" Opacity="0" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>

在WPF桌面应用程序上呈现转换的最佳方法

0 个答案: