Question

我正在尝试动画一个椭圆，它会在状态变化上变大。我似乎无法在宽度和高度上进行过渡。

请注意，如果我将TargetProperty更改为(FrameworkElement.RenderTransform).(CompositeTransform.TranslateX)，则适用转换。

这是我使用的ControlTemplate：

<Border>
    <VisualStateManager.VisualStateGroups>
        <VisualStateGroup x:Name="ControlStates">
            <VisualStateGroup.Transitions>
                <VisualTransition x:Name="ClosedToOpened" 
                                      From="Closed" To="Opened"
                                      GeneratedDuration="0:0:0.5">
                    <Storyboard>
                        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Width" Storyboard.TargetName="Bubble">
                            <EasingDoubleKeyFrame KeyTime="0:0:0" Value="10" EasingFunction="{StaticResource EaseOutQuintic}" />
                            <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="50" EasingFunction="{StaticResource EaseOutQuintic}" />
                        </DoubleAnimationUsingKeyFrames>
                        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Height" Storyboard.TargetName="Bubble">
                            <EasingDoubleKeyFrame KeyTime="0:0:0" Value="10" EasingFunction="{StaticResource EaseOutQuintic}" />
                            <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="50" EasingFunction="{StaticResource EaseOutQuintic}" />
                        </DoubleAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualTransition>
                <VisualTransition x:Name="OpenedToClosed" 
                                      From="Opened" To="Closed"
                                      GeneratedDuration="0:0:0.5">
                    <Storyboard>
                        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Width" Storyboard.TargetName="Bubble">
                            <EasingDoubleKeyFrame KeyTime="0:0:0" Value="50" EasingFunction="{StaticResource EaseOutQuintic}" />
                            <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="10" EasingFunction="{StaticResource EaseOutQuintic}" />
                        </DoubleAnimationUsingKeyFrames>
                        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Height" Storyboard.TargetName="Bubble">
                            <EasingDoubleKeyFrame KeyTime="0:0:0" Value="50" EasingFunction="{StaticResource EaseOutQuintic}" />
                            <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="10" EasingFunction="{StaticResource EaseOutQuintic}" />
                        </DoubleAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualTransition>
            </VisualStateGroup.Transitions>
            <VisualStateGroup.States>
                <VisualState x:Name="Opened">
                    <Storyboard>
                        <DoubleAnimation Storyboard.TargetName="Bubble" Storyboard.TargetProperty="Width" Duration="0" To="50" />
                        <DoubleAnimation Storyboard.TargetName="Bubble" Storyboard.TargetProperty="Height" Duration="0" To="50" />
                    </Storyboard>
                </VisualState>
                <VisualState x:Name="Closed">
                    <Storyboard>
                        <DoubleAnimation Storyboard.TargetName="Bubble" Storyboard.TargetProperty="Width" Duration="0" To="10" />
                        <DoubleAnimation Storyboard.TargetName="Bubble" Storyboard.TargetProperty="Height" Duration="0" To="10" />
                    </Storyboard>
                </VisualState>
            </VisualStateGroup.States>
        </VisualStateGroup>
    </VisualStateManager.VisualStateGroups>
    <Ellipse x:Name="Bubble" Width="10" Height="10" Fill="Black" />
</Border>

如何让转换工作？

（我尝试过ScaleX / Y但它在动画时给出了像素Ly结果）

Answer 1

您的动画是依赖动画，默认情况下，动画系统不会运行相关动画。要启用动画，您需要将动画对象的EnableDependentAnimation属性设置为True。

在WinRT中，有两种动画：Dependent and independent animations。

如果动画具有以下任何特征，则独立：


动画的持续时间为0秒（请参阅“注意”）

动画定位 UIElement.Opacity

动画定位这些UIElement属性的子属性值： RenderTransform ，投影，剪辑

动画定位 Canvas.Left 或 Canvas.Top

动画定位画笔值并使用 SolidColorBrush ，动画颜色

动画是 ObjectAnimationUsingKeyFrames


如果您的动画不符合这些条件，则可能是依赖动画。

要使转换有效，您可以更改以下代码：

<Border>
    <VisualStateManager.VisualStateGroups>
        <VisualStateGroup x:Name="ControlStates">
            <VisualStateGroup.Transitions>
                <VisualTransition x:Name="ClosedToOpened"
                                  From="Closed"
                                  GeneratedDuration="0:0:0.5"
                                  To="Opened">
                    <Storyboard>
                        <DoubleAnimationUsingKeyFrames EnableDependentAnimation="True" Storyboard.TargetName="Bubble" Storyboard.TargetProperty="Width">
                            <EasingDoubleKeyFrame EasingFunction="{StaticResource EaseOutQuintic}" KeyTime="0:0:0" Value="10" />
                            <EasingDoubleKeyFrame EasingFunction="{StaticResource EaseOutQuintic}" KeyTime="0:0:0.5" Value="50" />
                        </DoubleAnimationUsingKeyFrames>
                        <DoubleAnimationUsingKeyFrames EnableDependentAnimation="True" Storyboard.TargetName="Bubble" Storyboard.TargetProperty="Height">
                            <EasingDoubleKeyFrame EasingFunction="{StaticResource EaseOutQuintic}" KeyTime="0:0:0" Value="10" />
                            <EasingDoubleKeyFrame EasingFunction="{StaticResource EaseOutQuintic}" KeyTime="0:0:0.5" Value="50" />
                        </DoubleAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualTransition>
                <VisualTransition x:Name="OpenedToClosed"
                                  From="Opened"
                                  GeneratedDuration="0:0:0.5"
                                  To="Closed">
                    <Storyboard>
                        <DoubleAnimationUsingKeyFrames EnableDependentAnimation="True" Storyboard.TargetName="Bubble" Storyboard.TargetProperty="Width">
                            <EasingDoubleKeyFrame EasingFunction="{StaticResource EaseOutQuintic}" KeyTime="0:0:0" Value="50" />
                            <EasingDoubleKeyFrame EasingFunction="{StaticResource EaseOutQuintic}" KeyTime="0:0:0.5" Value="10" />
                        </DoubleAnimationUsingKeyFrames>
                        <DoubleAnimationUsingKeyFrames EnableDependentAnimation="True" Storyboard.TargetName="Bubble" Storyboard.TargetProperty="Height">
                            <EasingDoubleKeyFrame EasingFunction="{StaticResource EaseOutQuintic}" KeyTime="0:0:0" Value="50" />
                            <EasingDoubleKeyFrame EasingFunction="{StaticResource EaseOutQuintic}" KeyTime="0:0:0.5" Value="10" />
                        </DoubleAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualTransition>
            </VisualStateGroup.Transitions>
            ...
        </VisualStateGroup>
    </VisualStateManager.VisualStateGroups>
    ...
 </Border>

动画不适用于Ellipse

1 个答案: