WPF+Mvvm案例实战（五）- 自定义雷达图实现

文章目录

1、项目准备
- 1、创建文件
- 2、用户控件库
2、功能实现
3、运行效果
4、源代码获取

1、项目准备

1、创建文件

打开项目 Wpf_Examples，新建 RadarWindow.xaml 界面、RadarViewModel.cs 和用户控件库 UserControlLib 。如下所示：

2、用户控件库

创建用户控件库，创建数据模型 RadarModel.cs 和用户控件 RadarUC.xaml，文档目录结构如下：

2、功能实现

1、用户控件库

1、控件样式实现

RadarUC.xaml 代码如下：

csharp 复制代码

<UserControl x:Class="UserControlLib.RadarUC"
             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:UserControlLib"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800">
    <Grid x:Name="LayGrid">
        <!--画布-->
        <Canvas x:Name="mainCanvas"></Canvas>

        <!--4规则多边形-->
        <Polygon x:Name="P1" Stroke="#22ffffff" StrokeThickness="1"></Polygon>
        <Polygon x:Name="P2" Stroke="#22ffffff" StrokeThickness="1"></Polygon>
        <Polygon x:Name="P3" Stroke="#22ffffff" StrokeThickness="1"></Polygon>
        <Polygon x:Name="P4" Stroke="#22ffffff" StrokeThickness="1"></Polygon>

        <!--数据多边形-->
        <Polygon x:Name="P5" Stroke="Orange" Fill="#550091F0" StrokeThickness="1" ></Polygon>
    </Grid>
</UserControl>

RadarUC.cs 后端代码如下：

csharp 复制代码

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
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.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using UserControlLib.Models;

namespace UserControlLib
{
    /// <summary>
    /// RadarUC.xaml 的交互逻辑
    /// </summary>
    public partial class RadarUC : UserControl
    {
        public RadarUC()
        {
            InitializeComponent();
            SizeChanged += OnSizeChanged;//Alt+Enter
        }

        /// <summary>
        /// 窗体大小发生变化 重新画图
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OnSizeChanged(object sender, SizeChangedEventArgs e)
        {
            Drag();
        }

        /// <summary>
        /// 数据源。支持数据绑定 依赖属性
        /// </summary>
        public ObservableCollection<RadarModel> ItemSource
        {
            get { return (ObservableCollection<RadarModel>)GetValue(ItemSourceProperty); }
            set { SetValue(ItemSourceProperty, value); }
        }

        // Using a DependencyProperty as the backing store for MyProperty.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty ItemSourceProperty =
            DependencyProperty.Register("ItemSource", typeof(ObservableCollection<RadarModel>), typeof(RadarUC));

        /// <summary>
        /// 画图方法
        /// </summary>
        public void Drag()
        {
            //判断是否有数据
            if (ItemSource == null || ItemSource.Count == 0)
            {
                return;
            }

            //清楚之前画的
            mainCanvas.Children.Clear();
            P1.Points.Clear();
            P2.Points.Clear();
            P3.Points.Clear();
            P4.Points.Clear();
            P5.Points.Clear();

            //调整大小(正方形)
            double size = Math.Min(RenderSize.Width, RenderSize.Height);
            LayGrid.Height = size;
            LayGrid.Width = size;
            //半径
            double raduis = size / 2;

            //步子跨度
            double step = 360.0 / ItemSource.Count;

            for (int i = 0; i < ItemSource.Count; i++)
            {
                double x = (raduis - 20) * Math.Cos((step * i - 90) * Math.PI / 180);//x偏移量
                double y = (raduis - 20) * Math.Sin((step * i - 90) * Math.PI / 180);//y偏移量

                //X Y坐标
                P1.Points.Add(new Point(raduis + x, raduis + y));

                P2.Points.Add(new Point(raduis + x * 0.75, raduis + y * 0.75));

                P3.Points.Add(new Point(raduis + x * 0.5, raduis + y * 0.5));

                P4.Points.Add(new Point(raduis + x * 0.25, raduis + y * 0.25));

                //数据多边形
                P5.Points.Add(new Point(raduis + x * ItemSource[i].Value * 0.01, raduis + y * ItemSource[i].Value * 0.01));

                //文字处理
                TextBlock txt = new TextBlock();
                txt.Width = 60;
                txt.FontSize = 10;
                txt.TextAlignment = TextAlignment.Center;
                txt.Text = ItemSource[i].ItemName;
                txt.Foreground = new SolidColorBrush(Color.FromArgb(100, 255, 255, 255));
                txt.SetValue(Canvas.LeftProperty, raduis + (raduis - 10) * Math.Cos((step * i - 90) * Math.PI / 180) - 30);//设置左边间距
                txt.SetValue(Canvas.TopProperty, raduis + (raduis - 10) * Math.Sin((step * i - 90) * Math.PI / 180) - 7);//设置上边间距

                mainCanvas.Children.Add(txt);
            }
        }
    }
}

2、数据模型实现

RadarModel.cs 代码实现：

csharp 复制代码

public class RadarModel : INotifyPropertyChanged
{
    public event PropertyChangedEventHandler PropertyChanged;
    protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
    /// <summary>
    /// 项名称
    /// </summary>
    private string _ItemName;
    public string ItemName
    {
        get => _ItemName;
        set
        {
            if (_ItemName != value)
            {
                _ItemName = value;
                OnPropertyChanged();
            }
        }
    }
    /// <summary>
    /// 项数值
    /// </summary>
    private double _Value;
    public double Value
    {
        get => _Value;
        set
        {
            if (_Value != value)
            {
                _Value = value;
                OnPropertyChanged();
            }
        }
    }
}

2、应用程序代码实现

1.UI层代码实现

RadarWindow.xmal 代码如下（示例）：

csharp 复制代码

<Window x:Class="Wpf_Examples.Views.RadarWindow"
        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:radar="clr-namespace:UserControlLib;assembly=UserControlLib"
        xmlns:local="clr-namespace:Wpf_Examples.Views"
        DataContext="{Binding Source={StaticResource Locator},Path=Radar}"
        mc:Ignorable="d"
        Title="RadarWindow" Height="450" Width="800" Background="#2B2B2B">
    <Grid>
        <GroupBox Header="战斗属性" Margin="20" Foreground="White">
            <radar:RadarUC ItemSource="{Binding RadarList}"></radar:RadarUC>
        </GroupBox>
    </Grid>
</Window>

2、数据后台代码实现

项目控件库引用，如下所示：

项目页面控件引用

RadarViewModel.cs 代码如下：

csharp 复制代码

using CommunityToolkit.Mvvm.ComponentModel;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Threading;
using UserControlLib.Models;

namespace Wpf_Examples.ViewModels
{
    public class RadarViewModel:ObservableObject
    {
        #region 雷达数据属性
        /// <summary>
        /// 雷达
        /// </summary>
        private ObservableCollection<RadarModel> radarList;
        public ObservableCollection<RadarModel> RadarList
        {
            get { return radarList; }
            set { SetProperty(ref radarList, value); }
        }

        #endregion
        public RadarViewModel() {

            #region 初始化雷达数据 
            RadarList = new ObservableCollection<RadarModel>();
            RadarList.Add(new RadarModel { ItemName = "闪避", Value = 90 });
            RadarList.Add(new RadarModel { ItemName = "防御", Value = 30.00 });
            RadarList.Add(new RadarModel { ItemName = "暴击", Value = 34.89 });
            RadarList.Add(new RadarModel { ItemName = "攻击", Value = 69.59 });
            RadarList.Add(new RadarModel { ItemName = "速度", Value = 20 });
            CreateTimer(); //创建定时器动态改变数据
            #endregion
        }

        private void CreateTimer()
        {
            #region 每秒定时器服务
            DispatcherTimer cpuTimer = new DispatcherTimer
            {
                Interval = new TimeSpan(0, 0, 0, 3, 0)
            };
            cpuTimer.Tick += DispatcherTimer_Tick;
            cpuTimer.Start();
            #endregion
        }

        private void DispatcherTimer_Tick(object sender, EventArgs e)
        {
            Random random = new Random();
            foreach (var item in RadarList)
            {
                item.Value = random.Next(10, 100);
            }
        }
    }
}

3、主界面菜单添加

1、后台按钮方法改造：

csharp 复制代码

 private void FunMenu(string obj)
 {
     switch (obj)
     {
         case "图片按钮":
             PopWindow(new ImageButtonWindow());
             break;
         case "LED效果灯":
             PopWindow(new LEDStatusWindow());
             break;
         case "动态数字卡":
             PopWindow(new DataCardWindow());
             break;
         case "自定义GroupBox边框":
             PopWindow(new GroubBoxWindow());
             break;
         case "自定义雷达图":
             PopWindow(new RadarWindow());
             break;
             

     }
 }

2、按钮添加：

csharp 复制代码

 <WrapPanel>
     <Button Width="120" Height="30" FontSize="18" Content="图片按钮" Command="{Binding ButtonClickCmd}" CommandParameter="{Binding RelativeSource={RelativeSource Mode=Self},Path=Content}" Margin="8"/>
     <Button Width="120" Height="30" FontSize="18" Content="LED效果灯" Command="{Binding ButtonClickCmd}" CommandParameter="{Binding RelativeSource={RelativeSource Mode=Self},Path=Content}" Margin="8"/>
     <Button Width="120" Height="30" FontSize="18" Content="动态数字卡" Command="{Binding ButtonClickCmd}" CommandParameter="{Binding RelativeSource={RelativeSource Mode=Self},Path=Content}" Margin="8"/>
     <Button Width="190" Height="30" FontSize="18" Content="自定义GroupBox边框" Command="{Binding ButtonClickCmd}" CommandParameter="{Binding RelativeSource={RelativeSource Mode=Self},Path=Content}" Margin="8"/>
     <Button Width="140" Height="30" FontSize="18" Content="自定义雷达图" Command="{Binding ButtonClickCmd}" CommandParameter="{Binding RelativeSource={RelativeSource Mode=Self},Path=Content}" Margin="8"/>
 </WrapPanel>

3、依赖注入

csharp 复制代码

  public class ViewModelLocator
 {
     public IServiceProvider Services { get; }
     public ViewModelLocator()
     {
         Services = ConfigureServices();
     }
     private static IServiceProvider ConfigureServices()
     {
         var services = new ServiceCollection();

         //这里实现所有viewModel的容器注入
         services.AddSingleton<MainViewModel>();
         services.AddScoped<LEDStatusViewModel>();
         services.AddScoped<ImageButtonViewModel>();
         services.AddScoped<DataCardViewModel>();
         services.AddScoped<GroubBoxViewModel>();
         services.AddScoped<RadarViewModel>();
         //添加其他 viewModel

         return services.BuildServiceProvider();
     }

     public MainViewModel Main => Services.GetService<MainViewModel>();
     public LEDStatusViewModel LedStatus => Services.GetService<LEDStatusViewModel>();
     public ImageButtonViewModel ImageButton => Services.GetService<ImageButtonViewModel>();
     public DataCardViewModel DataCard => Services.GetService<DataCardViewModel>();
     public GroubBoxViewModel GroupBox => Services.GetService<GroubBoxViewModel>();
     public RadarViewModel Radar => Services.GetService<RadarViewModel>();

 }

3、运行效果

4、源代码获取

CSDN:下载链接WPF+Mvvm案例实战- 自定义雷达图实现