微信 二维码鼠标滑动 图像显隐效果

客户端微信在二维码状态下，鼠标滑过，会有一张手机的图片滑动滑出，从隐藏到显示，从显示到隐藏。

思路很简单：1、设置透明度；2、给个移动的位移

先看下做的效果

整体代码也不难，就是给Image控件设置动画效果。

<Grid x:Name="grid_content" Background="WhiteSmoke" Grid.Row="1">
            <Grid.Triggers>
                <EventTrigger RoutedEvent="Grid.MouseEnter">
                    <EventTrigger.Actions>
                        <BeginStoryboard HandoffBehavior="SnapshotAndReplace">
                            <Storyboard>
                                <DoubleAnimation Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.X)" BeginTime="0" Duration="0:0:0.5" From="0" To="300" Storyboard.TargetName="img"/>
                                <DoubleAnimation Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.X)" BeginTime="0:0:0.5" Duration="0:0:0.3" From="300" To="270" Storyboard.TargetName="img"/>
                                <DoubleAnimation Storyboard.TargetProperty="Opacity" BeginTime="0" Duration="0:0:0.5" From="0" To="1" Storyboard.TargetName="img"/>                                
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger.Actions>
                </EventTrigger>
                <EventTrigger RoutedEvent="Grid.MouseLeave">
                    <EventTrigger.Actions>
                        <BeginStoryboard HandoffBehavior="SnapshotAndReplace">
                            <Storyboard>                                
                                <DoubleAnimation Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.X)" BeginTime="0" Duration="0:0:0.5" From="270" To="0" Storyboard.TargetName="img"/>
                                <DoubleAnimation Storyboard.TargetProperty="Opacity" BeginTime="0" Duration="0:0:0.5" From="1" To="0" Storyboard.TargetName="img"/>
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger.Actions>
                </EventTrigger>
            </Grid.Triggers>
        </Grid>
        <Image x:Name="img" Source="/Image/huadong.png" Visibility="Visible" Opacity="0" Grid.Row="0" Grid.RowSpan="2" IsHitTestVisible="False">
            <Image.RenderTransform>
                <TransformGroup>
                    <ScaleTransform/>
                    <SkewTransform/>
                    <RotateTransform/>
                    <TranslateTransform/>
                </TransformGroup>
            </Image.RenderTransform>
        </Image>

部分代码