525 lines
20 KiB
C#
525 lines
20 KiB
C#
using OxyPlot;
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using OxyPlot.Axes;
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using OxyPlot.Legends;
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using OxyPlot.Series;
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using OxyPlot.WindowsForms;
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using Sunny.UI;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.IO;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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using 薄膜气体透过率测试仪.Data;
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using OxyPlot.Pdf;
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using System.Drawing.Drawing2D;
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using System.Drawing.Imaging;
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namespace 薄膜气体透过率测试仪
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{
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public partial class TrendChart : UIForm
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{
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private TestScreen _testScreen;
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Timer Timer;
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public List<lineData> Data { get; set; }
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public void AddChart(lineData data)
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{
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Data.Add(data);
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CreateBasicLineChart();
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}
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public TrendChart(List<lineData> Data)
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{
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InitializeComponent();
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Timer = new Timer();
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Timer.Tick += Timer_Tick;
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Timer.Interval = 500;
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Timer.Start();
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this.Data = Data;
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if (Data == null || Data.Count() == 0)
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{
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Data = new List<lineData>();
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}
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CreateBasicLineChart();
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}
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private void Timer_Tick(object sender, EventArgs e)
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{
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uiLabel2.Text = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
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}
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private void CreateBasicLineChart()
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{
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// 创建模型
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var plotModel = new PlotModel
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{
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//Title = "月度销售额统计",
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//TitleFontSize = 16,
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//TitleFontWeight = FontWeights.Bold
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};
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// 设置坐标轴
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plotModel.Axes.Add(new LinearAxis
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{
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Position = AxisPosition.Left,
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Title = "低压室压力(kPa)",
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//MajorStep = 0.05,
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// 可选：设置最小范围，确保坐标轴不会太小
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MinimumRange = 0.1, // 最小显示范围
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// 可选：设置绝对的边界
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AbsoluteMinimum = 0, // 确保最小值不会低于0
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AbsoluteMaximum = double.MaxValue, // 最大值无上限
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// 自动调整的额外设置
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MaximumPadding = 0.05, // 顶部留5%的空白
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MinimumPadding = 0.05, // 底部留5%的空白
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});
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plotModel.Axes.Add(new CategoryAxis
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{
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Position = AxisPosition.Bottom,
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Title = "时间",
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MajorStep = 30,
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ItemsSource = Data.Select(s => s.X)
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});
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// 创建折线系列
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var lineSeries = new LineSeries
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{
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//Title = "2024年",
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Color = OxyColor.FromRgb(255, 0, 0), // 红色
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//MarkerType = MarkerType.Circle,
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//MarkerSize = 5,
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//MarkerFill = OxyColors.Red,
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MarkerStroke = OxyColors.White,
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MarkerStrokeThickness = 1,
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StrokeThickness = 2
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};
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// 添加数据点
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float[] salesData = Data.Select(x => x.Y).ToArray();
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for (int i = 0; i < salesData.Length; i++)
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{
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lineSeries.Points.Add(new DataPoint(i, salesData[i]));
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}
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// 添加系列到模型
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plotModel.Series.Add(lineSeries);
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// 设置背景色
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plotModel.Background = OxyColors.White;
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plotModel.PlotAreaBorderColor = OxyColors.LightGray;
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// 应用到PlotView
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plotView1.Model = plotModel;
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}
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private void TrendChart_FormClosing(object sender, FormClosingEventArgs e)
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{
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Timer?.Stop();
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Timer?.Dispose();
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}
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//导出图表
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private void uiButton1_Click(object sender, EventArgs e)
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{
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try
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{
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// 创建保存文件对话框
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using (SaveFileDialog saveFileDialog = new SaveFileDialog())
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{
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saveFileDialog.Filter = "PDF文件 (*.pdf)|*.pdf|PNG图片 (*.png)|*.png|所有文件 (*.*)|*.*";
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saveFileDialog.FilterIndex = 1;
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saveFileDialog.RestoreDirectory = true;
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saveFileDialog.FileName = $"趋势图表_{DateTime.Now:yyyyMMdd_HHmmss}.pdf";
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if (saveFileDialog.ShowDialog() == DialogResult.OK)
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{
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string filePath = saveFileDialog.FileName;
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// 根据选择的文件类型调用不同的导出方法
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string extension = Path.GetExtension(filePath).ToLower();
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if (extension == ".pdf")
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{
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ExportChartToPdf(filePath);
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}
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else if (extension == ".png")
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{
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ExportChartToImage(filePath);
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}
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else
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{
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// 如果没有扩展名或扩展名不对，默认使用PDF
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if (string.IsNullOrEmpty(extension))
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{
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filePath += ".pdf";
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ExportChartToPdf(filePath);
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}
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else
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{
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// 尝试导出为PDF
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ExportChartToPdf(filePath);
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}
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}
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MessageBox.Show($"图表已成功导出到：\n{filePath}",
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"导出成功",
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MessageBoxButtons.OK,
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MessageBoxIcon.Information);
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}
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}
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}
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catch (Exception ex)
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{
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MessageBox.Show($"导出图表时发生错误：\n{ex.Message}",
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"导出失败",
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MessageBoxButtons.OK,
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MessageBoxIcon.Error);
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}
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}
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private void ExportChartToPdf(string filePath)
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{
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try
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{
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// 1. 创建图表图片
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Bitmap chartImage = CreateChartImage(800, 600);
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// 2. 使用System.Drawing.Printing创建PDF（简单方法）
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// 或者直接保存为高质量图片
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string tempImagePath = Path.Combine(Path.GetTempPath(), $"chart_temp_{Guid.NewGuid()}.png");
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// 保存为高质量PNG
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chartImage.Save(tempImagePath, System.Drawing.Imaging.ImageFormat.Png);
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// 3. 由于System.Drawing不直接支持PDF，我们使用iTextSharp（需要安装NuGet包）
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// 如果没有安装iTextSharp，我们直接保存为图片
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ExportImageAsPdf(chartImage, filePath);
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// 4. 清理临时文件
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if (File.Exists(tempImagePath))
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{
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File.Delete(tempImagePath);
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}
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// 5. 释放资源
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chartImage.Dispose();
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}
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catch (Exception ex)
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{
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// 如果PDF导出失败，降级为图片导出
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string imagePath = Path.ChangeExtension(filePath, ".png");
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ExportChartToImage(imagePath);
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throw new Exception($"PDF导出失败，已保存为图片格式: {ex.Message}");
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}
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}
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private void ExportChartToImage(string filePath)
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{
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Bitmap chartImage = null;
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try
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{
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// 创建高质量图表图片
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chartImage = CreateChartImage(1600, 1200); // 高分辨率
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// 保存图片
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System.Drawing.Imaging.ImageFormat format = System.Drawing.Imaging.ImageFormat.Png;
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string extension = Path.GetExtension(filePath).ToLower();
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if (extension == ".jpg" || extension == ".jpeg")
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format = System.Drawing.Imaging.ImageFormat.Jpeg;
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else if (extension == ".bmp")
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format = System.Drawing.Imaging.ImageFormat.Bmp;
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chartImage.Save(filePath, format);
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}
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finally
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{
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chartImage?.Dispose();
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}
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}
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private Bitmap CreateChartImage(int width, int height)
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{
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Bitmap bitmap = new Bitmap(width, height);
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using (Graphics graphics = Graphics.FromImage(bitmap))
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{
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// 设置高质量绘制
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graphics.SmoothingMode = SmoothingMode.HighQuality;
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graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
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graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
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graphics.CompositingQuality = CompositingQuality.HighQuality;
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// 填充白色背景
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graphics.Clear(Color.White);
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// 设置边距
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int marginLeft = 80;
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int marginRight = 40;
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int marginTop = 60;
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int marginBottom = 80;
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int chartWidth = width - marginLeft - marginRight;
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int chartHeight = height - marginTop - marginBottom;
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// 1. 绘制标题
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using (Font titleFont = new Font("微软雅黑", 16, FontStyle.Bold))
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using (Brush titleBrush = new SolidBrush(Color.Black))
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{
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string title = "趋势图表";
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SizeF titleSize = graphics.MeasureString(title, titleFont);
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graphics.DrawString(title, titleFont, titleBrush,
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(width - titleSize.Width) / 2, 20);
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}
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// 2. 绘制坐标轴
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Pen axisPen = new Pen(Color.Black, 2);
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// Y轴
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graphics.DrawLine(axisPen, marginLeft, marginTop, marginLeft, marginTop + chartHeight);
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// X轴
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graphics.DrawLine(axisPen, marginLeft, marginTop + chartHeight,
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marginLeft + chartWidth, marginTop + chartHeight);
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// 3. 绘制坐标轴标题
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using (Font axisFont = new Font("微软雅黑", 12))
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using (Brush axisBrush = new SolidBrush(Color.Black))
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{
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// Y轴标题
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graphics.DrawString("低压室压力(kPa)", axisFont, axisBrush,
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marginLeft - 70, marginTop - 40);
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// X轴标题
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graphics.DrawString("时间", axisFont, axisBrush,
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marginLeft + chartWidth / 2 - 20, marginTop + chartHeight + 40);
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}
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// 4. 计算数据范围
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if (Data != null && Data.Count > 0)
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{
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float minY = Data.Min(d => d.Y);
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float maxY = Data.Max(d => d.Y);
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// 添加一些余量
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float rangeY = maxY - minY;
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if (rangeY == 0) rangeY = 1;
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minY -= rangeY * 0.1f;
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maxY += rangeY * 0.1f;
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// 5. 自适应Y轴刻度
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int yTicks = 5; // 固定5个刻度，清晰易读
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// 计算合适的刻度步长
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float roughStep = (maxY - minY) / (yTicks - 1);
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float magnitude = (float)Math.Pow(10, Math.Floor(Math.Log10(roughStep)));
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float stepSize = (float)Math.Ceiling(roughStep / magnitude) * magnitude;
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// 调整minY和maxY为步长的整数倍
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minY = (float)(Math.Floor(minY / stepSize) * stepSize);
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maxY = (float)(Math.Ceiling(maxY / stepSize) * stepSize);
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// 重新计算刻度数量
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yTicks = (int)Math.Ceiling((maxY - minY) / stepSize);
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float yTickStep = chartHeight / yTicks;
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float yValueStep = stepSize;
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using (Font tickFont = new Font("Arial", 9))
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using (Brush tickBrush = new SolidBrush(Color.Black))
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{
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for (int i = 0; i <= yTicks; i++)
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{
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float yPos = marginTop + chartHeight - (i * yTickStep);
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float yValue = minY + (i * yValueStep);
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// 绘制刻度线
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graphics.DrawLine(Pens.Gray, marginLeft - 5, yPos, marginLeft, yPos);
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// 绘制刻度值（根据值的大小选择合适的小数位数）
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string tickLabel;
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if (Math.Abs(yValue) < 0.01)
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tickLabel = "0";
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else if (stepSize < 0.1)
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tickLabel = yValue.ToString("F3");
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else if (stepSize < 1)
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tickLabel = yValue.ToString("F2");
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else if (stepSize < 10)
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tickLabel = yValue.ToString("F1");
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else
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tickLabel = yValue.ToString("F0");
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SizeF textSize = graphics.MeasureString(tickLabel, tickFont);
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graphics.DrawString(tickLabel, tickFont, tickBrush,
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marginLeft - textSize.Width - 8, yPos - textSize.Height / 2);
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}
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}
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// 6. 绘制X轴刻度（时间）
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int xTicks = Math.Min(10, Data.Count);
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using (Font tickFont = new Font("Arial", 9))
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using (Brush tickBrush = new SolidBrush(Color.Black))
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{
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for (int i = 0; i < xTicks; i++)
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{
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int dataIndex = i * (Data.Count - 1) / (xTicks - 1);
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if (dataIndex >= Data.Count) dataIndex = Data.Count - 1;
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float xPos = marginLeft + (i * chartWidth / (float)(xTicks - 1));
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// 绘制刻度线
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graphics.DrawLine(Pens.Gray, xPos, marginTop + chartHeight,
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xPos, marginTop + chartHeight + 5);
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// 绘制时间标签
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if (dataIndex < Data.Count)
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{
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string timeLabel = Data[dataIndex].X;
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if (timeLabel.Length > 8)
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timeLabel = timeLabel.Substring(timeLabel.Length - 8); // 只取时间部分
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SizeF textSize = graphics.MeasureString(timeLabel, tickFont);
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graphics.DrawString(timeLabel, tickFont, tickBrush,
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xPos - textSize.Width / 2, marginTop + chartHeight + 10);
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}
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}
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}
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// 7. 绘制数据曲线
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if (Data.Count > 1)
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{
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PointF[] points = new PointF[Data.Count];
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for (int i = 0; i < Data.Count; i++)
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{
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float xRatio = i / (float)(Data.Count - 1);
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float yRatio = (Data[i].Y - minY) / (maxY - minY);
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float xPos = marginLeft + (xRatio * chartWidth);
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float yPos = marginTop + chartHeight - (yRatio * chartHeight);
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points[i] = new PointF(xPos, yPos);
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}
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// 绘制曲线
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using (Pen curvePen = new Pen(Color.Red, 2))
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{
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curvePen.StartCap = System.Drawing.Drawing2D.LineCap.Round;
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curvePen.EndCap = System.Drawing.Drawing2D.LineCap.Round;
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// 绘制平滑曲线
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if (points.Length > 1)
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{
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graphics.DrawCurve(curvePen, points, 0.5f);
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}
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// 绘制数据点
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foreach (PointF point in points)
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{
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graphics.FillEllipse(Brushes.Red,
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point.X - 3, point.Y - 3, 6, 6);
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graphics.DrawEllipse(Pens.White,
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point.X - 3, point.Y - 3, 6, 6);
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}
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}
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}
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// 8. 绘制图例
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using (Font legendFont = new Font("微软雅黑", 10))
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{
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string legendText = "压力数据";
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SizeF legendSize = graphics.MeasureString(legendText, legendFont);
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RectangleF legendRect = new RectangleF(
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width - marginRight - legendSize.Width - 30,
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marginTop,
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legendSize.Width + 20,
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legendSize.Height + 10);
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graphics.FillRectangle(Brushes.White, legendRect);
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graphics.DrawRectangle(Pens.Gray,
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legendRect.X, legendRect.Y, legendRect.Width, legendRect.Height);
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// 绘制图例颜色标记
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graphics.FillRectangle(Brushes.Red,
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legendRect.X + 5, legendRect.Y + 5, 15, legendRect.Height - 10);
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graphics.DrawString(legendText, legendFont, Brushes.Black,
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legendRect.X + 25, legendRect.Y + 5);
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}
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}
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else
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{
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// 没有数据时显示提示
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using (Font infoFont = new Font("微软雅黑", 14))
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using (Brush infoBrush = new SolidBrush(Color.Gray))
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{
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string infoText = "暂无数据";
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SizeF textSize = graphics.MeasureString(infoText, infoFont);
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graphics.DrawString(infoText, infoFont, infoBrush,
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(width - textSize.Width) / 2, (height - textSize.Height) / 2);
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}
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}
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// 9. 绘制边框
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graphics.DrawRectangle(Pens.LightGray, 0, 0, width - 1, height - 1);
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}
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return bitmap;
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}
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private void ExportImageAsPdf(Image image, string filePath)
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{
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try
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{
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// 方法1：如果有iTextSharp，使用它创建PDF
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// 这需要安装iTextSharp NuGet包
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// 方法2：直接保存为图片
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string imagePath = Path.ChangeExtension(filePath, ".png");
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image.Save(imagePath, System.Drawing.Imaging.ImageFormat.Png);
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// 方法3：使用Windows自带的PDF打印功能（需要用户交互）
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// 这里我们使用方法2，因为最简单可靠
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// 如果需要PDF，可以提示用户安装iTextSharp
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throw new NotImplementedException("PDF导出需要安装iTextSharp库，已保存为PNG图片");
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}
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catch (NotImplementedException)
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{
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// 保存为图片
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string imagePath = Path.ChangeExtension(filePath, ".png");
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image.Save(imagePath, System.Drawing.Imaging.ImageFormat.Png);
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// 更新文件路径
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File.Move(imagePath, filePath.Replace(".pdf", ".png"));
|
||
}
|
||
}
|
||
|
||
|
||
}
|
||
|
||
|
||
|
||
|
||
}
|