C# WPF 时钟动画(2/2)

内容目录

实现效果
业务场景
编码实现
本文参考
源码下载

1.实现效果

时钟实时展示系统本机时间

2.业务场景

模拟时钟

3.编码实现

使用 .Net Core 3.1 创建名为 “Clock” 的WPF解决方案，解决方案中需要添加时钟背景图片，图片如下：https://github.com/Abel13/Clock/blob/master/Clock/Assets/clock.png

3.1 主窗体 MainWindow.xaml

使用3个Border布局时钟的时针、分针、秒针，并给3个指针添加动画，动画说明如下：

时针每12个小时循环一圈(360°)，每个小时旋转30°（30°*12=360°）；
分针每60分钟循环一圈(360°)，每分钟旋转6°（6°*60=360°）；
秒针每60秒循环一圈（360°），每秒钟旋转6°（6°*60=360°），并且秒针旋转6°有个轻微的摆动动画。

<Window x:Class="Clock.MainWindow"

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

        xmlns:local="clr-namespace:Clock"

        mc:Ignorable="d"

        AllowsTransparency="True" WindowStyle="None" ResizeMode="NoResize"

        Height="520" Width="520" WindowStartupLocation="CenterScreen" Background="{x:Null}">

    <Window.Resources>

        <Storyboard x:Key="sbseconds" RepeatBehavior="Forever">

            <DoubleAnimationUsingKeyFrames Storyboard.TargetName="second" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[2].(RotateTransform.Angle)">

                <EasingDoubleKeyFrame KeyTime="0" Value="-90">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:1" Value="-84">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:2" Value="-78">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:3" Value="-72">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:4" Value="-66">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:5" Value="-60">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:6" Value="-54">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:7" Value="-48">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:8" Value="-42">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:9" Value="-36">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:10" Value="-30">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:11" Value="-24">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:12" Value="-18">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:13" Value="-12">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:14" Value="-6">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:15" Value="0">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:16" Value="6">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:17" Value="12">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:18" Value="18">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:19" Value="24">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:20" Value="30">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:21" Value="36">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:22" Value="42">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:23" Value="48">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:24" Value="54">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:25" Value="60">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:26" Value="66">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:27" Value="72">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:28" Value="78">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:29" Value="84">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

                <EasingDoubleKeyFrame KeyTime="00:00:30" Value="90">

                    <EasingDoubleKeyFrame.EasingFunction>

                        <BackEase EasingMode="EaseOut" Amplitude="0.4"/>

                    </EasingDoubleKeyFrame.EasingFunction>

                </EasingDoubleKeyFrame>

            </DoubleAnimationUsingKeyFrames>

        </Storyboard>

    </Window.Resources>

    <Window.Triggers>

        <EventTrigger RoutedEvent="FrameworkElement.Loaded">

            <BeginStoryboard Storyboard="{StaticResource sbseconds}"/>

        </EventTrigger>

    </Window.Triggers>

    <Grid>

        <Border BorderThickness="10" BorderBrush="Black" CornerRadius="300" Width="520" Height="520">

            <Grid Height="500" Width="500" HorizontalAlignment="Center" VerticalAlignment="Center">

                <Border CornerRadius="350">

                    <Border.Background>

                        <ImageBrush ImageSource="Assets/clock.png"/>

                    </Border.Background>

                </Border>

                <Border CornerRadius="350" Background="#778889BB"/>

                <Border x:Name="hour" CornerRadius="0 15 15 0" Height="10" Width="130" BorderThickness="3" BorderBrush="#FF66B01C" Margin="0,245,120,245" HorizontalAlignment="Right" RenderTransformOrigin="0,0.5">

                    <Border.RenderTransform>

                        <TransformGroup>

                            <ScaleTransform/>

                            <SkewTransform/>

                            <RotateTransform Angle="-90"/>

                            <TranslateTransform/>

                        </TransformGroup>

                    </Border.RenderTransform>

                </Border>

                <Border x:Name="minute" CornerRadius="0 15 15 0" Height="5" Width="160" BorderThickness="3" BorderBrush="#FFD15209" Margin="250.5,247,0,248" HorizontalAlignment="Left" RenderTransformOrigin="0,0.5">

                    <Border.RenderTransform>

                        <TransformGroup>

                            <ScaleTransform/>

                            <SkewTransform/>

                            <RotateTransform Angle="-90"/>

                            <TranslateTransform/>

                        </TransformGroup>

                    </Border.RenderTransform>

                </Border>

                <Border x:Name="second" CornerRadius="0 15 15 0" Height="3" Width="220" Background="Red" Margin="0,248,30,248" HorizontalAlignment="Right" RenderTransformOrigin="0,0.5">

                    <Border.RenderTransform>

                        <TransformGroup>

                            <ScaleTransform/>

                            <SkewTransform/>

                            <RotateTransform Angle="-90"/>

                            <TranslateTransform/>

                        </TransformGroup>

                    </Border.RenderTransform>

                </Border>

                <Ellipse Fill="Black" Width="20" Height="20" HorizontalAlignment="Center" VerticalAlignment="Center"/>

            </Grid>

        </Border>

    </Grid>

</Window>

3.2 MainWindow.xaml.cs

后台代码开启三个指针动画，并设置各指针动画起始位置

using System;

using System.Windows;

using System.Windows.Input;

using System.Windows.Media.Animation;

namespace Clock

{

    /// <summary>

    /// Interaction logic for MainWindow.xaml

    /// </summary>

    public partial class MainWindow : Window

    {

        public MainWindow()

        {

            InitializeComponent();

            int now_hours = DateTime.Now.Hour > 12 ? (DateTime.Now.Hour - 12) : DateTime.Now.Hour;

            int now_minutes = DateTime.Now.Minute;

            int now_seconds = DateTime.Now.Second;

            Storyboard seconds = (Storyboard)second.FindResource("sbseconds");

            seconds.Begin();

            seconds.Seek(new TimeSpan(0, 0, 0, now_seconds, 0));

            Storyboard minutes = (Storyboard)minute.FindResource("sbminutes");

            minutes.Begin();

            minutes.Seek(new TimeSpan(0, 0, now_minutes, now_seconds, 0));

            Storyboard hours = (Storyboard)hour.FindResource("sbhours");

            hours.Begin();

            hours.Seek(new TimeSpan(0, now_hours, now_minutes, now_seconds, 0));

        }

        private void Window_MouseDown(object sender, MouseButtonEventArgs e)

        {

            DragMove();

        }

    }

}

4.本文参考

Design com WPF 大神的学习视频：

1/2 - Creating a clock with Animations

2/2 - Creating a clock with Animations

5.代码下载

源码中实现了全部效果，大伙可以直接下载编译运行；建议看大神视频手敲一遍，加深学习印象；视频中使用Blend布局时钟、设置动画，类似PS(PhotoShop)，设计界面很是方便的。

Github源码下载：Clock

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C# WPF 时钟动画(2/2)

C# WPF 时钟动画(2/2)

1.实现效果

2.业务场景

3.编码实现

3.1 主窗体 MainWindow.xaml

3.2 MainWindow.xaml.cs

4.本文参考

5.代码下载

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