COP_Petrushin_PIbd-32/Library14Petrushin/PdfCirclDiagr.cs

using Library14Petrushin.Classes;
using PdfSharp.Drawing;
using PdfSharp.Pdf;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Library14Petrushin
{
    public partial class PdfCirclDiagr : Component
    {
        public void GeneratePdf(
        string fileName,
        string documentTitle,
        string chartTitle,
        LegendPosition legendPosition,
        List<ChartData> chartData)
        {
            // Проверка на заполненность входных данных
            if (string.IsNullOrEmpty(fileName) || string.IsNullOrEmpty(documentTitle) ||
                string.IsNullOrEmpty(chartTitle) || chartData == null || !chartData.Any())
            {
                throw new ArgumentException("Все входные данные должны быть заполнены.");
            }

            
            PdfDocument document = new PdfDocument();
            PdfPage page = document.AddPage();
            XGraphics gfx = XGraphics.FromPdfPage(page);
            XFont font = new XFont("Verdana", 10);

        
            gfx.DrawString(documentTitle, new XFont("Verdana", 16, XFontStyleEx.Bold), XBrushes.Black, new XRect(0, 0, page.Width, 50), XStringFormats.Center);

          
            gfx.DrawString(chartTitle, font, XBrushes.Black, new XRect(50, 50, page.Width - 100, 30), XStringFormats.Center);

            
            DrawPieChart(gfx, new XRect(50, 100, 300, 300), chartData, legendPosition);

            // Сохранение документа
            document.Save(fileName);
        }

        private void DrawPieChart(XGraphics gfx, XRect rect, List<ChartData> chartData, LegendPosition legendPosition)
        {
            double total = chartData.Sum(d => d.Value);
            double startAngle = 0;
            int legendX = 0;
            int legendY = 0;

            // Определение расположения легенды
            switch (legendPosition)
            {
                case LegendPosition.Top:
                    legendX = (int)rect.X + (int)rect.Width / 2;
                    legendY = (int)rect.Y - 50;
                    break;
                case LegendPosition.Bottom:
                    legendX = (int)rect.X + (int)rect.Width / 2;
                    legendY = (int)rect.Y + (int)rect.Height + 20;
                    break;
                case LegendPosition.Left:
                    legendX = (int)rect.X - 100;
                    legendY = (int)rect.Y + (int)rect.Height / 2;
                    break;
                case LegendPosition.Right:
                    legendX = (int)rect.X + (int)rect.Width + 20;
                    legendY = (int)rect.Y + (int)rect.Height / 2;
                    break;
            }

            // Отрисовка секторов диаграммы и легенды
            foreach (var data in chartData)
            {
                double sweepAngle = 360 * (data.Value / total);
                gfx.DrawPie(GetRandomBrush(), rect, startAngle, sweepAngle);
                startAngle += sweepAngle;

                gfx.DrawString(data.SeriesName, new XFont("Verdana", 8), XBrushes.Black, new XPoint(legendX, legendY));
                legendY += 20;
            }
        }

        private XBrush GetRandomBrush()
        {
            Random random = new Random();
            return new XSolidBrush(XColor.FromArgb(random.Next(256), random.Next(256), random.Next(256)));
        }
    }
}