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WPF和Expression Blend开发实例:Loading动画

2024-08-08 23:34:32   218人阅读

今天来点实际的,项目中可以真实使用的,一个Loading的动画,最后封装成一个控件,可以直接使用在项目中,先上图:

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整个设计比较简单,就是在界面上画18个Path,然后通过动画改变OpacityMask的值来实现一种动态的效果.

 

因为整个过程比较简单,所以其实没有用到Blend,唯一一个需要注意的是Path的路径值是请美工从PS里生成的,路径如下:

<Geometry x:Key="Block">            M291.15499,85.897525             C291.15499,85.897525              301.88917,85.87921              301.88917,85.87921              301.88917,85.87921              300.38339,94.355061              300.38339,94.355061              300.38339,94.355061              292.85366,94.355042              292.85366,94.355042              292.85366,94.355042              291.15499,85.897525              291.15499,85.897525Z</Geometry>

Path的代码如下,每个Path一次旋转特定的角度围成一个圆形

<Path x:Name="block0" Style="{StaticResource PathStyle}" Data="{StaticResource Block}"  OpacityMask="#00000000" >     <Path.RenderTransform>           <RotateTransform Angle="180"/>      </Path.RenderTransform></Path>
<Style x:Key="PathStyle" TargetType="Path">            <Setter Property="Fill" Value="#FF0092FF"></Setter>            <Setter Property="Stretch" Value="Fill"></Setter>            <Setter Property="RenderTransformOrigin" Value="0.5,5"></Setter>            <Setter Property="VerticalAlignment" Value="Top"></Setter>            <Setter Property="Height" Value="30"></Setter></Style>

单个Path的动画:

<ColorAnimationUsingKeyFrames Duration="00:00:03.6" Storyboard.TargetName="block0" Storyboard.TargetProperty="(UIElement.OpacityMask).(SolidColorBrush.Color)">                <LinearColorKeyFrame KeyTime="00:00:00.0" Value="#FF000000"/>                <LinearColorKeyFrame KeyTime="00:00:00.2" Value="#EF000000"/>                <LinearColorKeyFrame KeyTime="00:00:00.4" Value="#E2000000"/>                <LinearColorKeyFrame KeyTime="00:00:00.6" Value="#D3000000"/>                <LinearColorKeyFrame KeyTime="00:00:00.8" Value="#C6000000"/>                <LinearColorKeyFrame KeyTime="00:00:01.0" Value="#B7000000"/>                <LinearColorKeyFrame KeyTime="00:00:01.2" Value="#AA000000"/>                <LinearColorKeyFrame KeyTime="00:00:01.4" Value="#9B000000"/>                <LinearColorKeyFrame KeyTime="00:00:01.6" Value="#8E000000"/>                <LinearColorKeyFrame KeyTime="00:00:01.8" Value="#7F000000"/>                <LinearColorKeyFrame KeyTime="00:00:02.0" Value="#72000000"/>                <LinearColorKeyFrame KeyTime="00:00:02.2" Value="#63000000"/>                <LinearColorKeyFrame KeyTime="00:00:02.4" Value="#56000000"/>                <LinearColorKeyFrame KeyTime="00:00:02.6" Value="#3D000000"/>                <LinearColorKeyFrame KeyTime="00:00:02.8" Value="#26000000"/>                <LinearColorKeyFrame KeyTime="00:00:03.0" Value="#19000000"/>                <LinearColorKeyFrame KeyTime="00:00:03.2" Value="#0C000000"/>                <LinearColorKeyFrame KeyTime="00:00:03.4" Value="#00000000"/>                <LinearColorKeyFrame KeyTime="00:00:03.6" Value="#FF000000"/>            </ColorAnimationUsingKeyFrames>

源代码下载:

http://files.cnblogs.com/youngytj/LoadingAnimations.rar

 

WPF和Expression Blend开发实例:Loading动画


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