Txgy.MSeedHelper/mseedChart.Main/Views/ChartPlotView.xaml.cs

using ScottPlot.Plottable;
using ScottPlot;
using System;
using System.Collections.Generic;
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.Navigation;
using System.Windows.Shapes;
using System.Drawing;
using System.Reflection;
using System.Windows.Threading;
using Microsoft.Win32;
using System.Windows.Media.Imaging;
using mseedChart.Main.Models;
using mseedChart.Main.ViewModels;
using System.Security;

namespace mseedChart.Main.Views
{
    /// <summary>
    /// ChartPlot.xaml 的交互逻辑
    /// </summary>
    public partial class ChartPlotView : UserControl
    {
        public DispatcherTimer _renderTimer = new DispatcherTimer(); 
        //非定时更新需停止定时器
        List<SignalPlot> scatterPlots = new List<SignalPlot>();
        //每天生成的最大点数*1天
        const int MaxPointCount = 30_000;        
        int nextDataIndex = 1;
        WpfPlot pl;
        public ChartPlotView()
        {
            InitializeComponent();
            //去掉右键菜单
            plt.RightClicked-=plt.DefaultRightClickEvent; 
          //  plt.RightClicked+= RightClickEvent; 
            
            var model = this.DataContext as ChartPlotViewModel;
            model.InializeChartPlotChange = InializeChartPlotDates;
            model.PlotLineDataChanged = PlotLineLiveData;
            plt.Plot.Palette = new ScottPlot.Palettes.ColorblindFriendly();
         //   plt.Configuration.LockVerticalAxis = true;
            List<string> lineLabels;

           lineLabels = new List<string>();
            for (int i = 0; i < 72; i++)
            {
                lineLabels.Add(i.ToString());
            }
            foreach (var item in lineLabels)
            {
                double[] data = new double[MaxPointCount];
                var line = plt.Plot.AddSignal(data);             
                line.Label = item;
               // line.Smooth = true;
               // line.SmoothTension = 0.6f;
                scatterPlots.Add(line);
            }
            plt.Refresh();
          
            plt.Plot.XAxis.Color(Color.Black);
            plt.Plot.Legend(enable: false);

           // plt.Plot.Legend( false,location: Alignment.MiddleLeft);
            //X轴显示格式
         //   plt.Plot.XAxis.TickLabelFormat("yyyy-MM-dd HH:mm:ss", dateTimeFormat: true);
            _renderTimer.Interval = TimeSpan.FromMilliseconds(1000);
            _renderTimer.Tick += Render;
            _renderTimer.Start();        
        }
        void Render(object sender, EventArgs e)
        {
            if (AutoAxisCbox.IsChecked == true)
            {
                plt.Plot.AxisAuto();
            }
            plt.Refresh();
        }
        int index = 1;
        void PlotLineLiveData(List<double[]> runData)
        {
            int number = runData[0].Length;


            for (int i = 0; i < scatterPlots.Count; i++)  //数组平移
            {
                //    Array.Copy(scatterPlots[i].Xs, 1, scatterPlots[i].Xs, 0, scatterPlots[i].Xs.Length - 1);
                Array.Copy(scatterPlots[i].Ys, number, scatterPlots[i].Ys, 0, scatterPlots[i].Ys.Length - number);

                Array.Copy(runData[i], 0, scatterPlots[i].Ys, scatterPlots[i].Ys.Length - number, number);
            }
        }
        void InializeChartPlotDates(List<LineDatas> lineDatas)
        {
            nextDataIndex = lineDatas[0].YData.Length;
            for (int i = 0; i < scatterPlots.Count; i++)
            {
                if (nextDataIndex <= MaxPointCount)
                {
                    //内存拷贝
                    Array.Copy(lineDatas[i].YData, scatterPlots[i].Ys, nextDataIndex);
                    scatterPlots[i].MaxRenderIndex = nextDataIndex-1;
                }
                else
                {
                   // scatterPlots[i].OffsetX = lineDatas[0].XData[nextDataIndex - MaxPointCount];    // Set start date
                  //  Array.Copy(lineDatas[i].XData, nextDataIndex - MaxPointCount, scatterPlots[i].Xs, 0, MaxPointCount);
                    Array.Copy(lineDatas[i].YData, nextDataIndex - MaxPointCount, scatterPlots[i].Ys, 0, MaxPointCount);
                    scatterPlots[i].MaxRenderIndex =  MaxPointCount-1;
                 }
            }
            nextDataIndex = nextDataIndex < MaxPointCount ? nextDataIndex: MaxPointCount;       //最大不能超过 MaxPointCount
      //      plt.Plot.AxisAuto();
         //   plt.Refresh();
        }

        private void OnMouseMove(object sender, MouseEventArgs e)
        {
            int pixelX = (int)e.MouseDevice.GetPosition(plt).X;
            int pixelY = (int)e.MouseDevice.GetPosition(plt).Y;

            (double coordinateX, double coordinateY) = plt.GetMouseCoordinates();

            plt.Refresh();
        }

        private void wpfPlot1_MouseEnter(object sender, MouseEventArgs e)
        {
            //  MouseTrackLabel.Content = "Mouse ENTERED the plot";
          //  Crosshair.IsVisible = true;
        }

        private void wpfPlot1_MouseLeave(object sender, MouseEventArgs e)
        {
            //MouseTrackLabel.Content = "Mouse LEFT the plot";
            //XPixelLabel.Content = "--";
            //YPixelLabel.Content = "--";
            //XCoordinateLabel.Content = "--";
            //YCoordinateLabel.Content = "--";

         //   Crosshair.IsVisible = false;
          //  plt.Refresh();
        }

        public void RightClickEvent(object sender, EventArgs e)
        {
            var cm = new ContextMenu();

            MenuItem SaveImageMenuItem = new() { Header = "保存图片" };
            SaveImageMenuItem.Click += RightClickMenu_SaveImage_Click;
            cm.Items.Add(SaveImageMenuItem);

            MenuItem CopyImageMenuItem = new() { Header = "复制图片" };
            CopyImageMenuItem.Click += RightClickMenu_Copy_Click;
            cm.Items.Add(CopyImageMenuItem);

            MenuItem AutoAxisMenuItem = new() { Header = "自适应数据" };
            AutoAxisMenuItem.Click += RightClickMenu_AutoAxis_Click;
            cm.Items.Add(AutoAxisMenuItem);
            cm.IsOpen = true;
        }

        #region 右键菜单
        private void RightClickMenu_Copy_Click(object sender, EventArgs e) => System.Windows.Clipboard.SetImage(BmpImageFromBmp(plt.Plot.Render()));
     //   private void RightClickMenu_Help_Click(object sender, EventArgs e) => new WPF.HelpWindow().Show();
  //      private void RightClickMenu_OpenInNewWindow_Click(object sender, EventArgs e) => new WpfPlotViewer(plt.Plot).Show();
        private void RightClickMenu_AutoAxis_Click(object sender, EventArgs e) { plt.Plot.AxisAuto();  plt.Refresh(); }
        private void RightClickMenu_SaveImage_Click(object sender, EventArgs e)
        {
            var sfd = new SaveFileDialog
            {
                FileName = "ScottPlot.png",
                Filter = "PNG Files (*.png)|*.png;*.png" +
                         "|JPG Files (*.jpg, *.jpeg)|*.jpg;*.jpeg" +
                         "|BMP Files (*.bmp)|*.bmp;*.bmp" +
                         "|All files (*.*)|*.*"
            };

            if (sfd.ShowDialog() is true)
                plt.Plot.SaveFig(sfd.FileName);
        }
        private static BitmapImage BmpImageFromBmp(System.Drawing.Bitmap bmp)
        {
            using var memory = new System.IO.MemoryStream();
            bmp.Save(memory, System.Drawing.Imaging.ImageFormat.Png);
            memory.Position = 0;

            var bitmapImage = new BitmapImage();
            bitmapImage.BeginInit();
            bitmapImage.StreamSource = memory;
            bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
            bitmapImage.EndInit();
            bitmapImage.Freeze();

            return bitmapImage;
        }

        #endregion
    }
}