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  • 记录一个闪烁，跳动，光圈的动画

      1 <Window x:Class="WpfApp3.MainWindow"
  2         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  3         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  4         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
  5         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
  6         xmlns:local="clr-namespace:WpfApp3"
  7         mc:Ignorable="d"
  8         Title="MainWindow" Height="450" Width="450">
  9     <Window.Resources>
 10     </Window.Resources>
 11     <Grid>
 12         <StackPanel
 13             HorizontalAlignment="Center" 
 14                  VerticalAlignment="Center" >
 15             <Grid>
 16                 <Ellipse Width="20" 
 17                  Height="20"
 18                  IsHitTestVisible="False" 
 19                  RenderTransformOrigin="0.5,0.5" 
 20                  x:Name="ellipse" >
 21                     <Ellipse.RenderTransform>
 22                         <ScaleTransform ScaleX="1" ScaleY="1"/>
 23                     </Ellipse.RenderTransform>
 24                     <Ellipse.Fill>
 25                         <RadialGradientBrush>
 26                             <GradientStop Color="#ffffff" Offset="0.4"/>
 27                             <GradientStop Color="Red" Offset="0.1"/>
 28                         </RadialGradientBrush>
 29                     </Ellipse.Fill>
 30                     <Ellipse.Style>
 31                         <Style TargetType="Ellipse">
 32                             <Setter Property="Visibility" Value="Collapsed" />
 33                             <Style.Triggers>
 34                                 <DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=local:MainWindow},Path=IsTwinkle}"
 35                              Value="true">
 36                                     <DataTrigger.Setters>
 37                                         <Setter Property="Visibility" Value="Visible" />
 38                                     </DataTrigger.Setters>
 39                                     <DataTrigger.EnterActions>
 40                                         <BeginStoryboard Name="bb">
 41                                             <Storyboard RepeatBehavior="Forever">
 42                                                 <DoubleAnimation BeginTime="0" Storyboard.TargetProperty="RenderTransform.ScaleX"
 43                                                          From="0" 
 44                                                          To="10" 
 45                                                          Duration="00:00:0.6" />
 46                                                 <DoubleAnimation BeginTime="0" Storyboard.TargetProperty="RenderTransform.ScaleY"
 47                                                          From="0" 
 48                                                          To="10" 
 49                                                          Duration="00:00:0.6" />
 50                                             </Storyboard>
 51                                         </BeginStoryboard>
 52                                     </DataTrigger.EnterActions>
 53                                 </DataTrigger>
 54                                 <DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=local:MainWindow},Path=IsTwinkle}"
 55                                      Value="false">
 56                                     <DataTrigger.EnterActions>
 57                                         <StopStoryboard BeginStoryboardName="bb" />
 58                                     </DataTrigger.EnterActions>
 59                                 </DataTrigger>
 60                             </Style.Triggers>
 61                         </Style>
 62                     </Ellipse.Style>
 63                 </Ellipse>
 64                 <Border Width="10" 
 65                         Height="10" 
 66                         CornerRadius="5" 
 67                         BorderThickness="0" 
 68                         Background="Blue" />
 69             </Grid>
 70             <Grid Margin="50">
 71                 <Ellipse Width="20" 
 72                          Height="20"
 73                          IsHitTestVisible="False" 
 74                          RenderTransformOrigin="0.5,0.5" 
 75                          x:Name="ellipse2" >
 76                     <Ellipse.RenderTransform>
 77                         <ScaleTransform ScaleX="1" ScaleY="1"/>
 78                     </Ellipse.RenderTransform>
 79                     <Ellipse.Fill>
 80                         <RadialGradientBrush>
 81                             <GradientStop Color="#ffffff" Offset="0.35"/>
 82                             <GradientStop Color="Red" Offset="0.8"/>
 83                         </RadialGradientBrush>
 84                     </Ellipse.Fill>
 85                     <Ellipse.Style>
 86                         <Style TargetType="Ellipse">
 87                             <Setter Property="Visibility" Value="Collapsed" />
 88                             <Style.Triggers>
 89                                 <DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=local:MainWindow},Path=IsTwinkle}"
 90                                              Value="true">
 91                                     <DataTrigger.Setters>
 92                                         <Setter Property="Visibility" Value="Visible" />
 93                                     </DataTrigger.Setters>
 94                                     <DataTrigger.EnterActions>
 95                                         <BeginStoryboard Name="bb">
 96                                             <Storyboard RepeatBehavior="Forever">
 97                                                 <DoubleAnimation BeginTime="0" Storyboard.TargetProperty="RenderTransform.ScaleX"
 98                                                          From="0" 
 99                                                          To="1" 
100                                                          Duration="00:00:0.6" />
101                                                 <DoubleAnimation BeginTime="0" Storyboard.TargetProperty="RenderTransform.ScaleY"
102                                                          From="0" 
103                                                          To="1" 
104                                                          Duration="00:00:0.6" />
105                                             </Storyboard>
106                                         </BeginStoryboard>
107                                     </DataTrigger.EnterActions>
108                                 </DataTrigger>
109                                 <DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=local:MainWindow},Path=IsTwinkle}"
110                                      Value="false">
111                                     <DataTrigger.EnterActions>
112                                         <StopStoryboard BeginStoryboardName="bb" />
113                                     </DataTrigger.EnterActions>
114                                 </DataTrigger>
115                             </Style.Triggers>
116                         </Style>
117                     </Ellipse.Style>
118                 </Ellipse>
119                 <Border Width="10" 
120                         Height="10"
121                         CornerRadius="5" 
122                         BorderThickness="0" 
123                         Background="Blue" />
124             </Grid>
125         </StackPanel>
126         <StackPanel VerticalAlignment="Center">
127             <CheckBox IsChecked="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=local:MainWindow},Path=IsTwinkle}"
128                       Content="是否闪烁"/>
129         </StackPanel>
130     </Grid>
131 </Window>
    View Code
     1 public partial class MainWindow : Window
 2     {
 3         public MainWindow()
 4         {
 5             InitializeComponent();
 6         }
 7 
 8         /// <summary>
 9         /// 是否闪烁
10         /// </summary>
11         public bool IsTwinkle
12         {
13             get { return (bool)GetValue(IsTwinkleProperty); }
14             set { SetValue(IsTwinkleProperty, value); }
15         }
16 
17         public static readonly DependencyProperty IsTwinkleProperty =
18             DependencyProperty.Register("IsTwinkle", typeof(bool), typeof(MainWindow), new PropertyMetadata(false));
19 
20     }
    View Code
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  • 原文地址：https://www.cnblogs.com/xuling-297769461/p/13364723.html
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