wpf 模拟抖音很火的罗盘时钟，附源码
前端时间突然发现，抖音火了个壁纸，就是黑底蕾丝~~~ 错错错，黑底白字的罗盘时钟！
作为程序员的我，也觉得很新颖，所以想空了研究下，这不，空下来了就用wpf，写个属于.net自己的罗盘时钟，目前只实现了时分秒，农历日期等逻辑都是一样的，所以就略了，有兴趣的朋友，可以继续深入！
最开始想直接弄成成exe，方便拷贝，到处运行使用的，但是考虑到，万一有网友朋友们需要，所以我还是把封成一个dll，需要的地方添加引用即可！
为了弄这个，还恶补了下，高中还是初中的知识，sin30，cos60，呵呵，正弦，余弦，所以不明白的朋友们需要先了解清楚这个，因为罗盘是旋转，需要用到计算这个值！
不废话了，先上图看下效果！
ok，整体效果就是这样了，中间是鄙人的名称缩写，抖音上是很潦草的，我就随便啦，占个位置，不然显得很空洞！
下面说说代码
主要是，RomeClockControlLibrary，这个是对控件的封装，上面那个启动程序只是一个容器，或者说是调用者，当然，如果要达到我这个效果，实现圆形的窗口透明的朋友们，可以看下借鉴！
<UserControl x:Class="RomeClockControlLibrary.RomeClockControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:RomeClockControlLibrary"
mc:Ignorable="d"
d:DesignHeight="450"
d:DesignWidth="800"
>
<Border x:Name="bor"
Background="#000000"
>
<Grid x:Name="grid" >
</Grid>
</Border>
</UserControl>
上面是前端代码，有点基础的都应该看得懂，没什么可说的
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
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.Animation;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes; namespace RomeClockControlLibrary
{
/// <summary>
/// 罗马时钟
/// </summary>
public partial class RomeClockControl : UserControl, IDisposable
{
public RomeClockControl()
{
InitializeComponent();
} /// <summary>
/// x轴的中心位置
/// </summary>
private double CenterPixToX => this.ActualWidth / 2; /// <summary>
/// y轴的中心位置
/// </summary>
private double CenterPixToY => this.ActualHeight / 2; /// <summary>
/// 秒
/// </summary>
private Canvas CanvasHour = null; /// <summary>
/// 分
/// </summary>
private Canvas CanvasMinute = null; /// <summary>
/// 时
/// </summary>
private Canvas CanvasSecond = null; /// <summary>
/// UI更新线程
/// </summary>
private Thread thread = null; /// <summary>
/// 缓存时的显示控件
/// </summary>
private TextBlock BlockHour = null; /// <summary>
/// 缓存分的显示控件
/// </summary>
private TextBlock BlockMinute = null; /// <summary>
/// 缓存秒的显示控件
/// </summary>
private TextBlock BlockSecond = null; /// <summary>
/// 添加控件
/// </summary>
private void Add(AddType type)
{
var offset = 0;//偏移量
var count = 0;//总量
var str = string.Empty;
var time = 0;
double AngleTime = 0;
Canvas canvas = new Canvas();
canvas.Tag = type; switch (type)
{
case AddType.Hour:
offset = 95;
count = 24;
str = "时";
CanvasHour = canvas;
time = DateTime.Now.Hour;
break;
case AddType.Minute:
offset = 60;
count = 60;
str = "分";
CanvasMinute = canvas;
time = DateTime.Now.Minute;
break;
case AddType.Second:
offset = 30;
count = 60;
str = "秒";
CanvasSecond = canvas;
time = DateTime.Now.Second;
break;
default:
return;
} var angle = 360 / count;//角度
var x = CenterPixToX - offset;//起始位置
var y = CenterPixToY - offset; for (int i = 0; i < count; i++)
{
TextBlock t = new TextBlock();
if (i <= 9)
{
t.Text = $"0{i}{str}";
}
else
{
t.Text = $"{i}{str}";
}
t.Tag = i;
t.Foreground = new SolidColorBrush((Color)ColorConverter.ConvertFromString("#7d7d7d"));
canvas.Children.Add(t); var sinv = Math.Sin((90 - angle * i) * (Math.PI / 180));
var cosv = Math.Cos((90 - angle * i) * (Math.PI / 180));
var a = CenterPixToY - y * sinv;
var b = CenterPixToX + y * cosv;
Canvas.SetLeft(t, b);
Canvas.SetTop(t, a); //设置角度
RotateTransform r = new RotateTransform();
r.Angle = angle * i - 90;
t.RenderTransform = r; if (i == time)
{
AngleTime = 360 - r.Angle;
//更新样式
t.Foreground = new SolidColorBrush(Colors.White);
switch (type)
{
case AddType.Hour:
BlockHour = t;
break;
case AddType.Minute:
BlockMinute = t;
break;
case AddType.Second:
BlockSecond = t;
break;
}
}
}
grid.Children.Add(canvas); //获取当前时间，旋转对应的角度
RotateTransform rtf = new RotateTransform();
rtf.CenterX = CenterPixToX;
rtf.CenterY = CenterPixToY;
rtf.Angle = AngleTime;
canvas.RenderTransform = rtf;
} /// <summary>
/// 渲染时钟
/// </summary>
public void Show()
{
Dispose();
//设置圆角
bor.CornerRadius = new CornerRadius(this.ActualWidth / 2); Add(AddType.Hour);
Add(AddType.Minute);
Add(AddType.Second); AddName(); thread = new Thread(new ThreadStart(threadMethod));
thread.IsBackground = true;
thread.Start();
} /// <summary>
/// 生成名称
/// </summary>
private void AddName()
{
TextBlock tb = new TextBlock();
tb.Text = "XL";
tb.Foreground = new SolidColorBrush(Colors.White);
tb.FontSize = 60;
tb.FontFamily = new FontFamily("华文琥珀");
tb.HorizontalAlignment = HorizontalAlignment.Center;
tb.VerticalAlignment = VerticalAlignment.Center;
grid.Children.Add(tb);
} /// <summary>
/// UI更新线程
/// </summary>
private void threadMethod()
{
while (true)
{
Dispatcher.Invoke(() =>
{
var s = DateTime.Now.Second;
var m = DateTime.Now.Minute;
var h = DateTime.Now.Hour; //处理时
if (m == 0 && (int)BlockHour.Tag != h)
{
SetUI(CanvasHour, h);
}
//处理分
if (s == 0 && (int)BlockMinute.Tag != m)
{
SetUI(CanvasMinute, m);
}
//处理秒
SetUI(CanvasSecond, s);
});
Thread.Sleep(1000);
}
} /// <summary>
/// 更新UI
/// </summary>
/// <param name="can"></param>
/// <param name="tag"></param>
/// <param name="color"></param>
private void SetUI(Canvas can, int tag)
{
var type = (AddType)can.Tag;
foreach (TextBlock item in can.Children)
{
if ((int)item.Tag == tag)
{
Debug.WriteLine(item.Text); var fr = item.RenderTransform as RotateTransform;
var angle = 360 - fr.Angle;
var rtf = can.RenderTransform as RotateTransform;
DoubleAnimation db = null;
if (type == AddType.Minute)
{
angle -= 360;
db = new DoubleAnimation(angle, new Duration(TimeSpan.FromSeconds(1)));
db.Completed += DbMinute_Completed;
BlockMinute = item;
}
else if (type == AddType.Hour)
{
angle += 360;
db = new DoubleAnimation(angle, new Duration(TimeSpan.FromSeconds(1.5)));
db.Completed += DbHour_Completed;
BlockHour = item;
}
else
{
db = new DoubleAnimation(angle, new Duration(TimeSpan.FromSeconds(0.25)));
db.Completed += DbSecond_Completed;
BlockSecond = item;
}
rtf.BeginAnimation(RotateTransform.AngleProperty, db); }
else
{
item.Foreground = new SolidColorBrush((Color)ColorConverter.ConvertFromString("#7d7d7d"));
}
}
} /// <summary>
/// 秒 动画完成时
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void DbSecond_Completed(object sender, EventArgs e)
{
BlockSecond.Foreground = new SolidColorBrush(Colors.White);
} /// <summary>
/// 时 动画完成时
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void DbHour_Completed(object sender, EventArgs e)
{
var fr = CanvasHour.RenderTransform as RotateTransform;
var angle = fr.Angle - 360;
fr = null;
RotateTransform rtf = new RotateTransform();
rtf.CenterX = CenterPixToX;
rtf.CenterY = CenterPixToY;
rtf.Angle = angle;
CanvasHour.RenderTransform = rtf;
Debug.WriteLine(rtf.Angle);
BlockHour.Foreground = new SolidColorBrush(Colors.White);
} /// <summary>
/// 分 动画完成时
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void DbMinute_Completed(object sender, EventArgs e)
{
var fr = CanvasMinute.RenderTransform as RotateTransform;
var angle = fr.Angle + 360;
fr = null;
RotateTransform rtf = new RotateTransform();
rtf.CenterX = CenterPixToX;
rtf.CenterY = CenterPixToY;
rtf.Angle = angle;
CanvasMinute.RenderTransform = rtf;
Debug.WriteLine(rtf.Angle);
BlockMinute.Foreground = new SolidColorBrush(Colors.White);
} /// <summary>
/// 释放
/// </summary>
public void Dispose()
{
thread?.Abort();
grid.Children.Clear();
}
} /// <summary>
/// 添加类型
/// </summary>
public enum AddType
{
Hour,
Minute,
Second
}
}
上面是后端逻辑，这才是重点，调用者通过show，调用显示的；在show里面会开启一个后台处理线程，来实现获取当前时间，并计算需要旋转的角度，最后采用动画更新到UI！
整个流程就是这样，有疑问的朋友，欢迎留言！
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