Stop, resume animation with Storyboard : Storyboard « Windows Presentation Foundation « C# / C Sharp

1. C# / C Sharp
2. Windows Presentation Foundation
3. Storyboard

Stop, resume animation with Storyboard

 

<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);
                }
            }
        }
    }
}

   
  

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