FullAutoWaterCheck/全自动水压检测仪/ChartManager.cs

using OxyPlot;
using OxyPlot.Axes;
using OxyPlot.Series;
using OxyPlot.WindowsForms;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;

namespace 全自动水压检测仪
{
    /// <summary>
    /// 图表管理器 - 负责实时曲线图的创建和数据更新
    /// 第一Y轴：实时压力（地址3130）
    /// 第二Y轴：压力设定值（地址2400，对应"压力设置(PSI)"）
    /// </summary>
    public class ChartManager
    {
        private PlotView _plotView;
        private PlotModel _plotModel;
        private LineSeries _pressureSeries;           // 实时压力值（地址3130）
        private LineSeries _pressureSetSeries;        // 压力设定值（地址2400）
        private List<DataPoint> _pressureData;
        private List<DataPoint> _pressureSetData;
        private const int MAX_DATA_POINTS = 60; // 最多显示60个数据点

        /// <summary>
        /// 初始化图表并添加到指定面板
        /// </summary>
        public void InitializeChart(Control targetPanel)
        {
            targetPanel.Invoke(new Action(() =>
            {
                if (targetPanel == null)
                    throw new ArgumentNullException(nameof(targetPanel));

                // 清除占位文字
                targetPanel.Text = null;

            // 初始化数据集合
            _pressureData = new List<DataPoint>();
            _pressureSetData = new List<DataPoint>();

            // 创建PlotModel
            _plotModel = new PlotModel
            {
                Title = "",
                Background = OxyColors.White,
                PlotAreaBorderColor = OxyColors.Gray
            };
            
            // 配置图例
            _plotModel.Legends.Add(new OxyPlot.Legends.Legend
            {
                LegendPosition = OxyPlot.Legends.LegendPosition.TopCenter,
                LegendOrientation = OxyPlot.Legends.LegendOrientation.Horizontal
            });

            // 配置X轴（时间轴 - 使用测试时间总秒数）
            var xAxis = new LinearAxis
            {
                Position = AxisPosition.Bottom,
                Title = "测试时间",
                TitleFontSize = 12,
                FontSize = 10,
                MajorGridlineStyle = LineStyle.Solid,
                MajorGridlineColor = OxyColor.FromRgb(230, 230, 230),
                MinorGridlineStyle = LineStyle.Dot,
                MinorGridlineColor = OxyColor.FromRgb(240, 240, 240),
                Minimum = 0,
                Maximum = 60,
                // 格式化X轴标签为HH:MM:SS格式
                LabelFormatter = value =>
                {
                    int totalSec = (int)value;
                    int h = totalSec / 3600;
                    int m = (totalSec % 3600) / 60;
                    int s = totalSec % 60;
                    return $"{h:D2}:{m:D2}:{s:D2}";
                }
            };
            _plotModel.Axes.Add(xAxis);

            // 配置左Y轴（实时压力）
            var yAxisLeft = new LinearAxis
            {
                Position = AxisPosition.Left,
                Title = "压力 (PSI)",
                TitleFontSize = 12,
                FontSize = 10,
                TitleColor = OxyColors.Blue,
                TextColor = OxyColors.Blue,
                MajorGridlineStyle = LineStyle.Solid,
                MajorGridlineColor = OxyColor.FromRgb(230, 230, 230),
                MinorGridlineStyle = LineStyle.Dot,
                MinorGridlineColor = OxyColor.FromRgb(240, 240, 240),
                StringFormat = "F2",
                Minimum = 0,
                Key = "LeftAxis"
            };
            _plotModel.Axes.Add(yAxisLeft);

            // 配置右Y轴（压力设定值）
            var yAxisRight = new LinearAxis
            {
                Position = AxisPosition.Right,
                Title = "压力设定值 (PSI)",
                TitleFontSize = 12,
                FontSize = 10,
                TitleColor = OxyColors.Red,
                TextColor = OxyColors.Red,
                MajorGridlineStyle = LineStyle.None,
                StringFormat = "F2",
                Minimum = 0,
                Key = "RightAxis"
            };
            _plotModel.Axes.Add(yAxisRight);

            // 添加实时压力曲线
            _pressureSeries = new LineSeries
            {
                Title = "实时压力",
                Color = OxyColors.Blue,
                StrokeThickness = 2,
                MarkerType = MarkerType.Circle,
                MarkerSize = 4,
                MarkerFill = OxyColors.Blue,
                YAxisKey = "LeftAxis"
            };
            _plotModel.Series.Add(_pressureSeries);

            // 添加压力设定值曲线
            _pressureSetSeries = new LineSeries
            {
                Title = "压力设定值",
                Color = OxyColors.Red,
                StrokeThickness = 2,
                MarkerType = MarkerType.Diamond,
                MarkerSize = 4,
                MarkerFill = OxyColors.Red,
                YAxisKey = "RightAxis"
            };
            _plotModel.Series.Add(_pressureSetSeries);

            // 创建PlotView控件
            _plotView = new PlotView
            {
                Model = _plotModel,
                Dock = DockStyle.Fill,
                BackColor = System.Drawing.Color.White
            };

            // 添加到目标面板
            targetPanel.Controls.Add(_plotView);
        }

        /// <summary>
        /// 添加新的数据点
        /// </summary>
        /// <param name="pressure">实时压力值</param>
        /// <param name="pressureSetValue">压力设定值（来自"压力设置(PSI)"，地址2400）</param>
        /// <param name="totalSeconds">测试时间（总秒数）</param>
        public void AddDataPoint(double pressure, double pressureSetValue, int totalSeconds)
        {
            if (_pressureSeries == null || _pressureSetSeries == null || _plotModel == null)
                return;

            // 添加数据点（使用测试时间总秒数作为X轴值）
            _pressureData.Add(new DataPoint(totalSeconds, pressure));
            _pressureSetData.Add(new DataPoint(totalSeconds, pressureSetValue));

            // 限制数据点数量，保持图表流畅
            if (_pressureData.Count > MAX_DATA_POINTS)
            {
                _pressureData.RemoveAt(0);
                _pressureSetData.RemoveAt(0);
            }

            // 更新系列数据
            _pressureSeries.Points.Clear();
            _pressureSeries.Points.AddRange(_pressureData);
            
            _pressureSetSeries.Points.Clear();
            _pressureSetSeries.Points.AddRange(_pressureSetData);

            // 动态调整X轴范围
            if (_pressureData.Count > 0)
            {
                var xAxis = _plotModel.Axes.FirstOrDefault(a => a.Position == AxisPosition.Bottom);
                if (xAxis != null)
                {
                    double minX = _pressureData.Min(p => p.X);
                    double maxX = _pressureData.Max(p => p.X);
                    xAxis.Minimum = minX;
                    xAxis.Maximum = maxX + 5; // 留一点余量
                }
            }

            // 刷新图表
            _plotModel.InvalidatePlot(true);
        }

        /// <summary>
        /// 清除所有数据
        /// </summary>
        public void ClearData()
        {
            _pressureData?.Clear();
            _pressureSetData?.Clear();

            if (_pressureSeries != null)
            {
                _pressureSeries.Points.Clear();
            }

            if (_pressureSetSeries != null)
            {
                _pressureSetSeries.Points.Clear();
            }

            // 重置X轴范围
            var xAxis = _plotModel?.Axes.FirstOrDefault(a => a.Position == AxisPosition.Bottom);
            if (xAxis != null)
            {
                xAxis.Minimum = 0;
                xAxis.Maximum = 60;
            }

            _plotModel?.InvalidatePlot(true);
        }

        /// <summary>
        /// 更新图表配置（例如切换温度模式时）
        /// </summary>
        /// <param name="isHighTemperatureMode">是否为高温模式</param>
        public void UpdateChartMode(bool isHighTemperatureMode)
        {
            if (_plotModel == null || _plotModel.Series.Count < 2)
                return;

            // 压力设定值曲线标题保持不变
            if (_pressureSetSeries != null)
            {
                _pressureSetSeries.Title = "压力设定值";
            }

            // 可以根据模式调整Y轴范围（压力设定值范围）
            foreach (var axis in _plotModel.Axes)
            {
                if (axis.Key == "RightAxis")
                {
                    axis.Maximum = 10; // 压力设定值通常不超过10MPa
                    break;
                }
            }

            _plotModel.InvalidatePlot(true);
        }

        /// <summary>
        /// 释放资源
        /// </summary>
        public void Dispose()
        {
            _plotView?.Dispose();
            _plotModel = null;
            _pressureSeries = null;
            _pressureSetSeries = null;
            _pressureData = null;
            _pressureSetData = null;
        }
    }
}