<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
x:Class="WpfApplication1.Window1"
Title="Color Spinner" Height="370" Width="270" >
<Window.Resources>
<Storyboard x:Key="Spin">
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="ellipse1" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(RotateTransform.Angle)" RepeatBehavior="Forever">
<SplineDoubleKeyFrame KeyTime="00:00:10" Value="360"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</Window.Resources>
<Window.Triggers>
<EventTrigger RoutedEvent="FrameworkElement.Loaded">
<BeginStoryboard Storyboard="{StaticResource Spin}" x:Name="Spin_BeginStoryboard"/>
</EventTrigger>
<EventTrigger RoutedEvent="ButtonBase.Click" SourceName="goButton">
<ResumeStoryboard BeginStoryboardName="Spin_BeginStoryboard"/>
</EventTrigger>
<EventTrigger RoutedEvent="ButtonBase.Click" SourceName="stopButton">
<PauseStoryboard BeginStoryboardName="Spin_BeginStoryboard"/>
</EventTrigger>
</Window.Triggers>
<Window.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FFFFFFFF" Offset="0"/>
<GradientStop Color="#FFFFC45A" Offset="1"/>
</LinearGradientBrush>
</Window.Background>
<Grid>
<StackPanel>
<Ellipse Margin="15,85,0,0" Name="ellipse1" Stroke="{x:Null}" Height="80" HorizontalAlignment="Left" VerticalAlignment="Top" Width="120" Fill="Red" Opacity="0.5" RenderTransformOrigin="0.92,0.5" >
<Ellipse.BitmapEffect>
<BevelBitmapEffect/>
</Ellipse.BitmapEffect>
<Ellipse.RenderTransform>
<TransformGroup>
<RotateTransform Angle="0"/>
</TransformGroup>
</Ellipse.RenderTransform>
</Ellipse>
<Button Name="goButton" Content="Go"/>
<Button Name="stopButton" Content="Stop"/>
<Button Name="toggleButton" Content="Toggle" Click="toggleButton_Click" />
</StackPanel>
</Grid>
</Window>
//File:Window.xaml.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Media.Animation;
namespace WpfApplication1
{
public partial class Window1 : Window
{
public Window1()
{
InitializeComponent();
}
private void toggleButton_Click(object sender, RoutedEventArgs e)
{
Storyboard spinStoryboard = Resources["Spin"] as Storyboard;
if (spinStoryboard != null)
{
if (spinStoryboard.GetIsPaused(this))
{
spinStoryboard.Resume(this);
}
else
{
spinStoryboard.Pause(this);
}
}
}
}
}
|
