原文:封装：WPF绘制曲线视图

一、目的：绘制简单轻量级的曲线视图

二、实现：

1、动画加载曲线

2、点击图例显示隐藏对应曲线

3、绘制标准基准线

4、绘制蒙板显示标准区域

 

曲线图示例：

心电图示例：

三、实现代码

View：

<echart:StaticCurveChartPlotter x:Name="chart" Background="White" DataSource="{Binding Collection}"
                                            FontSize="12" MaxValueY="400" MinValueY="0" MaxValueX="{Binding MaxValue}" MinValueX="{Binding MinValue}" 
                                            IsLegendVisible="True" Height="200" Width="800">
                            <!--MaxValueX="11" MinValueX="0"-->
                            <echart:StaticCurveChartPlotter.SplitItemYs>
                                <echart:SplitItem Color="DarkGray" Value="400" Text="400 " ></echart:SplitItem>
                                <echart:SplitItem Color="DarkGray" Value="350" Text="350 " ></echart:SplitItem>
                                <echart:SplitItem Color="DarkGray" Value="300" Text="300 "></echart:SplitItem>
                                <echart:SplitItem Color="DarkGray" Value="250" Text="250"></echart:SplitItem>
                                <echart:SplitItem Color="Red" Value="240"  Text="240 mmHg" SpliteType="HeighLight"/>
                                <echart:SplitItem Color="DarkGray" Value="200" Text="200"></echart:SplitItem>
                                <echart:SplitItem Color="DarkGray" Value="150" Text="150"></echart:SplitItem>
                                <echart:SplitItem Color="DarkGray" Value="100" Text="100" ></echart:SplitItem>
                                <echart:SplitItem Color="Green" Value="90"  Text="90 mmHg"  SpliteType="HeighLight"></echart:SplitItem>
                                <echart:SplitItem Color="DarkGray" Value="50" Text="50 "></echart:SplitItem>
                                <echart:SplitItem Color="DarkGray" Value="0" Text="0 "></echart:SplitItem>
                            </echart:StaticCurveChartPlotter.SplitItemYs> </echart:StaticCurveChartPlotter>

ViewModel：

    /// <summary> 说明 </summary>
    partial class MainWindowViewModel
    {
        private List<ICurveEntitySource> _collection = new List<ICurveEntitySource>();
        /// <summary> 曲线图数据 </summary>
        public List<ICurveEntitySource> Collection
        {
            get { return _collection; }
            set
            {
                _collection = value;
                RaisePropertyChanged("Collection");
            }
        }
 
        void Init()
        {
            RefreshCurveData();
        }
 
       public  void RefreshCurveData()
        {
 
            List<ICurveEntitySource> collection = new List<ICurveEntitySource>();
 
            CurveEntitySource entity = new CurveEntitySource();
            entity.Text = "长度(km)";
            entity.Color = Brushes.Red;
            entity.Marker = new CirclePointMarker();
 
            entity.Marker.Fill = Brushes.Red;
 
            for (int i = 0; i < 20; i++)
            {
                PointC point = new PointC();
                point.X = i;
                point.Y = i*i;
                point.Text = DateTime.Now.AddDays(i).ToString("yyyy-MM-dd");
                entity.Source.Add(point);
 
                this.MinValue = this.MinValue > point.X ? point.X : this.MinValue;
                this.MaxValue = this.MaxValue < point.X ? point.X : this.MaxValue;
 
            }
            collection.Add(entity);
 
            entity = new CurveEntitySource();
            entity.Text = "重量(kg)";
            entity.Color = Brushes.Orange;
            entity.Marker = new  T5PointMarker();
 
            entity.Marker.Fill = Brushes.Orange;
 
            for (int i = 0; i < 20; i++)
            {
                PointC point = new PointC();
                point.X = i;
                point.Y = (20-i) * (20 - i);
                point.Text = DateTime.Now.AddDays(i).ToString("yyyy-MM-dd");
                entity.Source.Add(point);
 
                this.MinValue = this.MinValue > point.X ? point.X : this.MinValue;
                this.MaxValue = this.MaxValue < point.X ? point.X : this.MaxValue;
 
            }
            collection.Add(entity);
 
            this.Collection = collection;
 
        }
 
        private double _maxValue = double.MinValue;
        /// <summary> 说明 </summary>
        public double MaxValue
        {
            get { return _maxValue; }
            set
            {
                _maxValue = value;
                RaisePropertyChanged("MaxValue");
            }
        }
 
        private double _minValue = double.MaxValue;
        /// <summary> 说明 </summary>
        public double MinValue
        {
            get { return _minValue; }
            set
            {
                _minValue = value;
                RaisePropertyChanged("MinValue");
            }
        }
    }
 
    partial class MainWindowViewModel : INotifyPropertyChanged
    {
        public MainWindowViewModel()
        {
            Init();
        }
 
        #region - MVVM -
 
        public event PropertyChangedEventHandler PropertyChanged;
 
        public void RaisePropertyChanged([CallerMemberName] string propertyName = "")
        {
            if (PropertyChanged != null)
                this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }
 
        #endregion
    }

结构设计：

示例图片：

 

下载地址 ：GitHut: https://github.com/HeBianGu/WpfChartProgram.git