WPF 自定义雷达图开发实例教程

自定义雷达图表如下：

1、创建UserControl,名为“RadarChartControl”

前台：

<UserControl x:Class="WpfApplication2.RadarChartControl"
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"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300" Loaded="RadarChartControl_OnLoaded">
<Canvas x:Name="CanvasPanel" HorizontalAlignment="Center" VerticalAlignment="Center">
</Canvas>
</UserControl>

后台：

/// <summary>
/// RadarChartControl.xaml 的交互逻辑
/// </summary>
public partial class RadarChartControl : UserControl
{
public RadarChartControl()
{
InitializeComponent();
}
#region 属性
/// <summary>
/// 尺寸大小
/// 高宽大小一样
/// </summary>
public double Size
{
get { return (double)GetValue(SizeProperty); }
set { SetValue(SizeProperty, value); }
}
public static readonly DependencyProperty SizeProperty = DependencyProperty.Register("Size", typeof(double),
typeof(RadarChartControl), new PropertyMetadata(400.0));
/// <summary>
/// 标题
/// </summary>
public List<ArgumentModel> Arguments
{
get { return (List<ArgumentModel>)GetValue(ArgumentsProperty); }
set { SetValue(ArgumentsProperty, value); }
}
public static readonly DependencyProperty ArgumentsProperty = DependencyProperty.Register("Arguments", typeof(List<ArgumentModel>),
typeof(RadarChartControl), new PropertyMetadata(new List<ArgumentModel>()));
/// <summary>
/// 数据
/// </summary>
public List<ChartItem> Datas
{
get { return (List<ChartItem>)GetValue(DatasProperty); }
set { SetValue(DatasProperty, value); }
}
public static readonly DependencyProperty DatasProperty = DependencyProperty.Register("Datas", typeof(List<ChartItem>),
typeof(RadarChartControl), new PropertyMetadata(new List<ChartItem>()));
/// <summary>
/// 获取或设置线条颜色
/// </summary>
public Brush BorderBrush
{
get { return (Brush)GetValue(BorderBrushProperty); }
set { SetValue(BorderBrushProperty, value); }
}
public static readonly DependencyProperty BorderBrushProperty = DependencyProperty.Register("BorderBrush", typeof(Brush),
typeof(RadarChartControl), new PropertyMetadata(Brushes.RoyalBlue));
/// <summary>
/// 连接点大小
/// </summary>
public int EllipseSize = 7;
/// <summary>
/// 控件大小
/// </summary>
public double TotalSize
{
get
{
double size = Size + 200;
return size;
}
}
/// <summary>
/// 面板
/// </summary>
public Canvas ChartCanvas = new Canvas();
//声明和注册路由事件
public static readonly RoutedEvent TitleClickRoutedEvent =
EventManager.RegisterRoutedEvent("TitleClick", RoutingStrategy.Bubble, typeof(EventHandler<RoutedEventArgs>), typeof(RadarChartControl));
//CLR事件包装
public event RoutedEventHandler TitleClick
{
add { this.AddHandler(TitleClickRoutedEvent, value); }
remove { this.RemoveHandler(TitleClickRoutedEvent, value); }
}
//激发路由事件,借用Click事件的激发方法
protected void OnClick(object sender, RoutedEventArgs e)
{
RoutedEventArgs args = new RoutedEventArgs(TitleClickRoutedEvent, e);
this.RaiseEvent(args);
}
#endregion
private void RadarChartControl_OnLoaded(object sender, RoutedEventArgs e)
{
if (!CheckData())
{
throw new Exception("RadarChart的数据之间不匹配!请重新配置!");
}
//获取最大数值
int maxData = Datas.Max(i => i.DataList.Max(o => o.Data));
//设置面板和背景
SetCanvasAndBackground(maxData);
//设置数据标题
SetDataTitle(Datas);
//获取半圈大小
double length = Size / 2 / maxData;
//连接点半径
int ellipseR = EllipseSize / 2;
foreach (var chartItem in Datas)
{
var color = chartItem.Color;
//俩个多边形,一个设置背景,一个设置边框
Polygon polygonArea = new Polygon() { Fill = color, Opacity = 0.2, StrokeThickness = 0 };
Polygon polygonBorder = new Polygon() { Fill = Brushes.Transparent, Stroke = color, StrokeThickness = 0.8 };
int index = 0;
foreach (var data in chartItem.DataList)
{
double currentAngle = Angle * index + 90;
double angle = (currentAngle / 360) * 2 * Math.PI;
var r = data.Data * length;
double x = Size / 2 + r * Math.Cos(angle);
double y = Size / 2 - r * Math.Sin(angle);
//多边形添加节点
var point = new Point()
{
X = x,
Y = y
};
polygonArea.Points.Add(point);
polygonBorder.Points.Add(point);
//设置节点Style
var ellipse = new Ellipse() { Width = EllipseSize, Height = EllipseSize, Fill = color };
Canvas.SetLeft(ellipse, x - ellipseR);
Canvas.SetTop(ellipse, y - ellipseR);
ChartCanvas.Children.Add(ellipse);
index++;
}
ChartCanvas.Children.Add(polygonArea);
ChartCanvas.Children.Add(polygonBorder);
}
//设置标题
SetArguments();
}
/// <summary>
/// 设置数据标题
/// </summary>
/// <param name="datas"></param>
private void SetDataTitle(List<ChartItem> datas)
{
RadarChartTitleList titleList = new RadarChartTitleList();
titleList.ItemSoure = datas;
double angle = Math.PI * 0.25;
double x = TotalSize / 2 + (TotalSize / 2) * Math.Sin(angle);
Canvas.SetLeft(titleList, x);
Canvas.SetTop(titleList, x);
CanvasPanel.Children.Add(titleList);
}
/// <summary>
/// 设置标题
/// </summary>
private void SetArguments()
{
int index = 0;
foreach (var argument in Arguments)
{
var button = new ChartButton();
button.Content = argument.Name;
button.Icon = argument.IconSource;
button.MyButton.Click += OnClick;
//绘制XY
double currentAngle = Angle * index + 90;
double angle = (currentAngle / 360) * 2 * Math.PI;
var r = TotalSize / 2;
double x = r + r * Math.Cos(angle) - (button.Width / 2);
double y = r - r * Math.Sin(angle) - (button.Height / 2);
//添加按钮高度差异
y = y + Math.Sin(angle) * (button.Width / 2 - button.Height / 2);
Canvas.SetLeft(button, x);
Canvas.SetTop(button, y);
CanvasPanel.Children.Add(button);
index++;
}
}
/// <summary>
/// 检查数据
/// </summary>
/// <returns></returns>
private bool CheckData()
{
if (Datas == null)
{
return false;
}
foreach (var data in Datas)
{
bool result = !Datas.Any(i => i.DataList.Count != data.DataList.Count);
if (!result)
{
return false;
}
}
return true;
}
/// <summary>
/// 设置面板和背景
/// </summary>
/// <param name="maxIndex"></param>
private void SetCanvasAndBackground(int maxIndex)
{
CanvasPanel.Height = TotalSize;
CanvasPanel.Width = TotalSize;
//面板
ChartCanvas.Height = Size;
ChartCanvas.Width = Size;
double canvasX = (TotalSize - Size) / 2;
Canvas.SetLeft(ChartCanvas, canvasX);
Canvas.SetTop(ChartCanvas, canvasX);
CanvasPanel.Children.Add(ChartCanvas);
//画圈和直线
var color = BorderBrush;
double length = Size / 2 / maxIndex;
for (int i = 0; i < maxIndex; i++)
{
double height = length * 2 * (i + 1);
double left = Size / 2 - length * (i + 1);
var ellipse = new Ellipse() { Stroke = color, StrokeThickness = 0.5, Height = height, Width = height };
Canvas.SetLeft(ellipse, left);
Canvas.SetTop(ellipse, left);
ChartCanvas.Children.Add(ellipse);
}
//暂时设定:4个标题时,画线
if (Arguments.Count == 4)
{
//竖向直线
Path verticalPath = new Path()
{
Stroke = color,
StrokeThickness = 0.2,
};
//添加数据
StreamGeometry geometry = new StreamGeometry();
geometry.FillRule = FillRule.Nonzero; //声前F0还是F1,现在是F1
using (StreamGeometryContext ctx = geometry.Open())
{
ctx.BeginFigure(new Point(Size / 2, 0), true, true);
ctx.LineTo(new Point(Size / 2, Size), true, false);
}
geometry.Freeze();
verticalPath.Data = geometry;
ChartCanvas.Children.Add(verticalPath);
//横向直线
Path horizontalPath = new Path()
{
Stroke = color,
StrokeThickness = 0.2,
};
//添加数据
geometry = new StreamGeometry();
geometry.FillRule = FillRule.Nonzero; //声前F0还是F1,现在是F1
using (StreamGeometryContext ctx = geometry.Open())
{
ctx.BeginFigure(new Point(0, Size / 2), true, true);
ctx.LineTo(new Point(Size, Size / 2), true, false);
}
geometry.Freeze();
horizontalPath.Data = geometry;
ChartCanvas.Children.Add(horizontalPath);
}
}
/// <summary>
/// 分隔角度
/// </summary>
private double Angle
{
get
{
int count = Arguments.Count;
double angle = 360 / count;
return angle;
}
}
}
/// <summary>
/// 类标题
/// </summary>
public class ArgumentModel
{
public ImageSource IconSource { get; set; }
public string Name { get; set; }
}
/// <summary>
/// 单组数据
/// </summary>
public class ChartItem
{
public Brush Color { get; set; }
List<ChartData> dataList = new List<ChartData>();
public List<ChartData> DataList
{
get { return dataList; }
set { dataList = value; }
}
public object Name { get; set; }
}
/// <summary>
/// 数据
/// </summary>
public class ChartData
{
public string Name { get; set; }
public int Data { get; set; }
}

2、创建标题类按钮控件，定义名称为ChartButton

前台：

<UserControl x:Class="WpfApplication2.ChartButton"
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"
mc:Ignorable="d"
d:DesignHeight="80" d:DesignWidth="200" Loaded="ChartButton_OnLoaded">
<UserControl.Resources>
<Style TargetType="Button">
<Setter Property="Foreground" Value="White"></Setter>
</Style>
</UserControl.Resources>
<Grid>
<Button x:Name="MyButton" VerticalAlignment="Center" HorizontalAlignment="Center">
<Button.Template>
<ControlTemplate TargetType="{x:Type Button}">
<Grid x:Name="ButtonGrid" Height="{TemplateBinding Height}">
<Rectangle x:Name="ButtonRetc" RadiusX="20" RadiusY="25" Stroke="#FF06FFE8"></Rectangle>
<StackPanel Orientation="Horizontal" Margin="20,5" HorizontalAlignment="Center">
<Rectangle Height="{Binding IconHeight}" Width="{Binding IconWidth}">
<Rectangle.Fill>
<ImageBrush ImageSource="{Binding Icon}"></ImageBrush>
</Rectangle.Fill>
</Rectangle>
<TextBlock x:Name="ButtonTextBlock" Text="{TemplateBinding Content}" Foreground="{TemplateBinding Foreground}" Margin="8,-2,0,0" FontSize="22" VerticalAlignment="Center" TextAlignment="Center"></TextBlock>
</StackPanel>
</Grid>
<ControlTemplate.Triggers>
<DataTrigger Binding="{Binding ElementName=MyButton,Path=IsFocused}" Value="True">
<DataTrigger.Setters>
<Setter TargetName="ButtonRetc" Property="Fill" Value="#FFA9BCFF"></Setter>
<Setter TargetName="ButtonRetc" Property="StrokeThickness" Value="0.5"></Setter>
<Setter TargetName="ButtonTextBlock" Property="Foreground" Value="#FF06FFE8"></Setter>
</DataTrigger.Setters>
</DataTrigger>
<DataTrigger Binding="{Binding ElementName=MyButton,Path=IsPressed}" Value="true">
<DataTrigger.Setters>
<Setter TargetName="ButtonTextBlock" Property="FontWeight" Value="Bold"></Setter>
</DataTrigger.Setters>
</DataTrigger>
<DataTrigger Binding="{Binding ElementName=MyButton,Path=IsFocused}" Value="false">
<DataTrigger.Setters>
<Setter TargetName="ButtonRetc" Property="Fill" Value="Transparent"></Setter>
<Setter TargetName="ButtonRetc" Property="StrokeThickness" Value="0"></Setter>
</DataTrigger.Setters>
</DataTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Button.Template>
</Button>
</Grid>
</UserControl>

后台：

/// <summary>
/// ChartButton.xaml 的交互逻辑
/// </summary>
public partial class ChartButton : UserControl
{
public ChartButton()
{
InitializeComponent();
}
#region 属性
/// <summary>
/// 工具提示
/// </summary>
public string ToolTip
{
get { return (string)GetValue(ToolTipProperty); }
set { SetValue(ToolTipProperty, value); }
}
public static readonly DependencyProperty ToolTipProperty = DependencyProperty.Register("ToolTip",
typeof(string), typeof(ChartButton), new PropertyMetadata());
/// <summary>
/// 按钮内容
/// </summary>
public string Content
{
get { return (string)GetValue(ContentProperty); }
set { SetValue(ContentProperty, value); }
}
public static readonly DependencyProperty ContentProperty = DependencyProperty.Register("Content",
typeof(string), typeof(ChartButton), new PropertyMetadata("按钮"));
/// <summary>
/// 图标
/// </summary>
public ImageSource Icon
{
get { return (ImageSource)GetValue(IconProperty); }
set { SetValue(IconProperty, value); }
}
public static readonly DependencyProperty IconProperty = DependencyProperty.Register("Icon",
typeof(ImageSource), typeof(ChartButton), new PropertyMetadata());
/// <summary>
/// 图标高度
/// </summary>
public double IconHeight
{
get { return (double)GetValue(IconHeightProperty); }
set { SetValue(IconHeightProperty, value); }
}
public static readonly DependencyProperty IconHeightProperty = DependencyProperty.Register("IconHeight",
typeof(double), typeof(ChartButton), new PropertyMetadata(25.0));
/// <summary>
/// 图标宽度
/// </summary>
public double IconWidth
{
get { return (double)GetValue(IconWidthProperty); }
set { SetValue(IconWidthProperty, value); }
}
public static readonly DependencyProperty IconWidthProperty = DependencyProperty.Register("IconWidth",
typeof(double), typeof(ChartButton), new PropertyMetadata(25.0));
/// <summary>
/// 高度
/// </summary>
public double Height
{
get { return (double)GetValue(HeightProperty); }
set { SetValue(HeightProperty, value); }
}
public static readonly DependencyProperty HeightProperty = DependencyProperty.Register("Height",
typeof(double), typeof(ChartButton), new PropertyMetadata(46.0));
/// <summary>
/// 宽度
/// </summary>
public double Width
{
get { return (double)GetValue(WidthProperty); }
set { SetValue(WidthProperty, value); }
}
public static readonly DependencyProperty WidthProperty = DependencyProperty.Register("Width",
typeof(double), typeof(ChartButton), new PropertyMetadata(170.0));
#endregion
private void ChartButton_OnLoaded(object sender, RoutedEventArgs e)
{
MyButton.ToolTip = ToolTip;
MyButton.Content = Content;
MyButton.Width = Width;
MyButton.Height = Height;
if (Icon != null)
{
MyButton.DataContext = new ChartButtonModel()
{
Icon = Icon,
IconHeight = IconHeight,
IconWidth = IconWidth
};
}
}
}
public class ChartButtonModel
{
public ImageSource Icon { get; set; }
public double IconHeight { get; set; }
public double IconWidth { get; set; }
}

3、定义数据组标题显示列表

前台：

<UserControl x:Class="WpfApplication2.RadarChartTitleList"
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"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300" Loaded="RadarChartTitleList_OnLoaded">
<UserControl.Resources>
<Style x:Key="ItemContainer" TargetType="{x:Type ListBoxItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListBoxItem}">
<Border x:Name="IconBorder" Background="Transparent" CornerRadius="4" BorderThickness="0">
<ContentPresenter />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsSelected" Value="true">
<Setter TargetName="IconBorder" Property="BitmapEffect">
<Setter.Value>
<OuterGlowBitmapEffect GlowColor="Transparent" GlowSize="5" />
</Setter.Value>
</Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</UserControl.Resources>
<Grid>
<ListBox x:Name="MyListBox" ItemsSource="{Binding}" ItemContainerStyle="{StaticResource ItemContainer}" FocusVisualStyle="{x:Null}">
<ListBox.Template>
<ControlTemplate>
<StackPanel Background="Transparent" IsItemsHost="True"></StackPanel>
</ControlTemplate>
</ListBox.Template>
<ListBox.ItemTemplate>
<DataTemplate>
<Grid HorizontalAlignment="Left" VerticalAlignment="Center" Background="Transparent">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid HorizontalAlignment="Center" Margin="10,0" Background="Transparent">
<Ellipse Fill="{Binding Color}" Height="6" Width="6" HorizontalAlignment="Right" VerticalAlignment="Center"></Ellipse>
<Canvas VerticalAlignment="Center" HorizontalAlignment="Center">
<Path Fill="{Binding Color}" Height="5" StrokeThickness="1" Stroke="{Binding Color}" VerticalAlignment="Center" Data="M-10,0 L10,0"></Path>
</Canvas>
</Grid>
<TextBlock Grid.Column="1" Text="{Binding Name}" Foreground="White" Background="Transparent"></TextBlock>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Grid>
</UserControl>

后台：

/// <summary>
/// RadarChartTitleList.xaml 的交互逻辑
/// </summary>
public partial class RadarChartTitleList : UserControl
{
public RadarChartTitleList()
{
InitializeComponent();
}
/// <summary>
/// 数据
/// </summary>
public List<ChartItem> ItemSoure
{
get { return (List<ChartItem>)GetValue(ItemSoureProperty); }
set { SetValue(ItemSoureProperty, value); }
}
public static readonly DependencyProperty ItemSoureProperty = DependencyProperty.Register("ItemSoure", typeof(List<ChartItem>),
typeof(RadarChartControl), new PropertyMetadata(new List<ChartItem>()));
private void RadarChartTitleList_OnLoaded(object sender, RoutedEventArgs e)
{
this.DataContext = ItemSoure;
}
}

4、界面引用控件

<Window x:Class="WpfApplication2.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:wpfApplication2="clr-namespace:WpfApplication2"
Title="MainWindow" Height="350" Width="525" Background="LightGray">
<Grid>
<wpfApplication2:RadarChartControl x:Name="RadarChartControl" HorizontalAlignment="Center" VerticalAlignment="Center">
<wpfApplication2:RadarChartControl.Arguments>
<wpfApplication2:ArgumentModel Name="C#" IconSource="Chart_Bar_Big.png"></wpfApplication2:ArgumentModel>
<wpfApplication2:ArgumentModel Name="JAVA" IconSource="Blueprint_Blog.png"></wpfApplication2:ArgumentModel>
<wpfApplication2:ArgumentModel Name="Python" IconSource="Chart_Graph_Descending.png"></wpfApplication2:ArgumentModel>
<wpfApplication2:ArgumentModel Name="VB" IconSource="Chart_Bar_Big.png"></wpfApplication2:ArgumentModel>
<wpfApplication2:ArgumentModel Name="其它" IconSource="Chart_Graph_Descending.png"></wpfApplication2:ArgumentModel>
</wpfApplication2:RadarChartControl.Arguments>
<wpfApplication2:RadarChartControl.Datas>
<wpfApplication2:ChartItem Name="应聘者A" Color="#FF07C507">
<wpfApplication2:ChartItem.DataList>
<wpfApplication2:ChartData Data="1"></wpfApplication2:ChartData>
<wpfApplication2:ChartData Data="3"></wpfApplication2:ChartData>
<wpfApplication2:ChartData Data="3"></wpfApplication2:ChartData>
<wpfApplication2:ChartData Data="4"></wpfApplication2:ChartData>
<wpfApplication2:ChartData Data="4"></wpfApplication2:ChartData>
</wpfApplication2:ChartItem.DataList>
</wpfApplication2:ChartItem>
<wpfApplication2:ChartItem Name="应聘者B" Color="#FF508BF3">
<wpfApplication2:ChartItem.DataList>
<wpfApplication2:ChartData Data="4"></wpfApplication2:ChartData>
<wpfApplication2:ChartData Data="1"></wpfApplication2:ChartData>
<wpfApplication2:ChartData Data="2"></wpfApplication2:ChartData>
<wpfApplication2:ChartData Data="1"></wpfApplication2:ChartData>
<wpfApplication2:ChartData Data="1"></wpfApplication2:ChartData>
</wpfApplication2:ChartItem.DataList>
</wpfApplication2:ChartItem>
<wpfApplication2:ChartItem Name="应聘者C" Color="#FFF73131">
<wpfApplication2:ChartItem.DataList>
<wpfApplication2:ChartData Data="2"></wpfApplication2:ChartData>
<wpfApplication2:ChartData Data="2"></wpfApplication2:ChartData>
<wpfApplication2:ChartData Data="3"></wpfApplication2:ChartData>
<wpfApplication2:ChartData Data="3"></wpfApplication2:ChartData>
<wpfApplication2:ChartData Data="3"></wpfApplication2:ChartData>
</wpfApplication2:ChartItem.DataList>
</wpfApplication2:ChartItem>
</wpfApplication2:RadarChartControl.Datas>
</wpfApplication2:RadarChartControl>
</Grid>
</Window>

以上所述是小编给大家介绍的WPF 自定义雷达图开发实例教程，希望对大家有所帮助，如果大家有任何疑问欢迎给我留言，小编会及时回复大家的，在此也非常感谢大家对脚本之家网站的支持！

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