WPF实现时钟特效

WPF在样式定义和UI动画上面相对于以前的技术有了不少的提升,下面给出WPF技术实现钟表的效果:

1、Visual Studio新建一个WPF应用程序,命名为WpfClock,新建一个images文件夹,并准备一个钟表的背景图片和程序图标素材。

2、编辑MainWindow.xaml文件,对UI进行定制,代码如下(指针都是用Rectangle实现的,当然可以用图片代替):

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;

namespace WpfClock

{

using System.Threading;

using System.Windows.Threading;

/// <summary>

/// MainWindow.xaml 的交互逻辑

/// </summary>

public partial class MainWindow : Window

{

//计时器

System.Timers.Timer timer = new System.Timers.Timer(1000);

public MainWindow()

{

InitializeComponent();

#region 初始化时间

secondPointer.Angle = DateTime.Now.Second * 6;

minutePointer.Angle = DateTime.Now.Minute * 6;

hourPointer.Angle = (DateTime.Now.Hour * 30) + (DateTime.Now.Minute * 0.5);

this.labTime.Content = DateTime.Now.ToString("HH:mm:ss");

#endregion

timer.Elapsed += new System.Timers.ElapsedEventHandler(timer_Elapsed);

timer.Enabled = true;

}

private void Grid_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)

{

//进行拖放移动

this.DragMove();

}

private void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)

{

//UI异步更新

this.Dispatcher.Invoke(DispatcherPriority.Normal, (Action)(() =>

{

//秒针转动,秒针绕一圈360度,共60秒,所以1秒转动6度

secondPointer.Angle = DateTime.Now.Second * 6;

//分针转动,分针绕一圈360度,共60分,所以1分转动6度

minutePointer.Angle = DateTime.Now.Minute * 6;

//时针转动,时针绕一圈360度,共12时,所以1时转动30度。

//另外同一个小时内,随着分钟数的变化(绕一圈60分钟),时针也在缓慢变化(转动30度,30/60=0.5)

hourPointer.Angle = (DateTime.Now.Hour * 30)+ (DateTime.Now.Minute * 0.5);

//更新时间值

this.labTime.Content = DateTime.Now.ToString("HH:mm:ss");

}));

}

}

}

3、编辑MainWindow.xaml.CS文件,对后台逻辑进行定制,代码如下:

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;

namespace WpfClock

{

using System.Threading;

using System.Windows.Threading;

/// <summary>

/// MainWindow.xaml 的交互逻辑

/// </summary>

public partial class MainWindow : Window

{

//计时器

System.Timers.Timer timer = new System.Timers.Timer(1000);

public MainWindow()

{

InitializeComponent();

#region 初始化时间

secondPointer.Angle = DateTime.Now.Second * 6;

minutePointer.Angle = DateTime.Now.Minute * 6;

hourPointer.Angle = (DateTime.Now.Hour * 30) + (DateTime.Now.Minute * 0.5);

this.labTime.Content = DateTime.Now.ToString("HH:mm:ss");

#endregion

timer.Elapsed += new System.Timers.ElapsedEventHandler(timer_Elapsed);

timer.Enabled = true;

}

private void Grid_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)

{

//进行拖放移动

this.DragMove();

}

private void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)

{

//UI异步更新

this.Dispatcher.Invoke(DispatcherPriority.Normal, (Action)(() =>

{

//秒针转动,秒针绕一圈360度,共60秒,所以1秒转动6度

secondPointer.Angle = DateTime.Now.Second * 6;

//分针转动,分针绕一圈360度,共60分,所以1分转动6度

minutePointer.Angle = DateTime.Now.Minute * 6;

//时针转动,时针绕一圈360度,共12时,所以1时转动30度。

//另外同一个小时内,随着分钟数的变化(绕一圈60分钟),时针也在缓慢变化(转动30度,30/60=0.5)

hourPointer.Angle = (DateTime.Now.Hour * 30)+ (DateTime.Now.Minute * 0.5);

//更新时间值

this.labTime.Content = DateTime.Now.ToString("HH:mm:ss");

}));

}

}

}

4、编译运行,如果运气不错的话,应该能显示如下效果:

总结

WPF可以用RotateTransform中的Angle进行旋转,可以指定中心点(CenterX,CenterY)

<Rectangle.RenderTransform>

<RotateTransform x:Name="hourPointer" CenterX="0" CenterY="70" Angle="90" />

</Rectangle.RenderTransform>

以上是 WPF实现时钟特效 的全部内容, 来源链接: utcz.com/z/334212.html

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