日期:2014-05-16  浏览次数:20816 次

windows phone:动画(二)

Silverlight动画目标

Silverlight动画都是基于时间的,你只需指定特定时间段内需要发生的改变,Silverlight的动画类会自动处理好剩下的工作。

Silverlight的动画的运行原理是改变特定对象的特定属性,该属性(即动画目标)必须是依赖属性。

Silverlight动画可用于double、Color、Point和Object类型,下面是相应的动画类:

Object

  DependencyObject(抽象)

    Timeline(抽象)

        DoubleAnimation

        DoubleAnimationUsingKeyFrames

        ColorAnimation

        ColorAnimationUsingKeyFrames

        PointAnimation

        PointAnimationUsingKeyFrames

        ObjectAnimationUsingKeyFrames

        Storyboard    --  故事板

下面是一个DoubleAnimation示例:

xaml文件片段如下所示:

    <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
            <Grid.RowDefinitions>
                <RowDefinition Height="*" />
                <RowDefinition Height="*" />
                <RowDefinition Height="*" />
            </Grid.RowDefinitions>
           
            <Button Name="btn1"

                    Content="Button No. 1"
                    Grid.Row="0"
                    HorizontalAlignment="Center"
                    VerticalAlignment="Center"
                    RenderTransformOrigin="0.5 0.5"
                    Click="OnButtonClick">
                <Button.RenderTransform>
                    <RotateTransform x:Name="rotate1" />
                </Button.RenderTransform>
            </Button>

            <Button Name="btn2"

                    Content="Button No. 2"
                    Grid.Row="1"
                    HorizontalAlignment="Center"