using System;
using CPF.Drawing;
using CPF.ReoGrid.Graphics;
using CPF.ReoGrid.Rendering;

namespace CPF.ReoGrid.Chart
{
	public class LineChartPlotView : ChartPlotView
	{
		public LineChartPlotView(AxisChart chart) : base(chart)
		{
		}

		protected override void OnPaint(RDrawingContext dc)
		{
			base.OnPaint(dc);
			AxisChart axisChart = base.Chart as AxisChart;
			bool flag = axisChart == null;
			if (!flag)
			{
				AxisDataInfo primaryAxisInfo = axisChart.PrimaryAxisInfo;
				bool flag2 = double.IsNaN((double)primaryAxisInfo.Levels) || primaryAxisInfo.Levels <= 0;
				if (!flag2)
				{
					WorksheetChartDataSource dataSource = base.Chart.DataSource;
					IGraphics graphics = dc.Graphics;
					Rect clientBounds = this.ClientBounds;
					Point[] array = new Point[dataSource.CategoryCount];
					for (int i = 0; i < dataSource.SerialCount; i++)
					{
						IDataSerialStyle dataSerialStyle = axisChart.DataSerialStyles[i];
						int num = 0;
						for (int j = 0; j < dataSource.CategoryCount; j++)
						{
							PlotPointColumn plotPointColumn = axisChart.PlotDataPoints[i][j];
							int num2 = j - num;
							bool hasValue = plotPointColumn.hasValue;
							if (hasValue)
							{
								Point[] array2 = array;
								int num3 = j;
								float[] plotColumnPoints = axisChart.PlotColumnPoints;
								int num4 = j;
								float num5 = axisChart.ZeroHeight - plotPointColumn.value;
								array2[num3] = new Point(ref plotColumnPoints[num4], ref num5);
							}
							bool flag3 = j >= dataSource.CategoryCount - 1;
							bool flag4 = !plotPointColumn.hasValue || (flag3 && num2 > 0);
							if (flag4)
							{
								bool flag5 = num2 > 1 || (flag3 && num2 > 0);
								if (flag5)
								{
									bool flag6 = flag3;
									if (flag6)
									{
										num2++;
									}
									graphics.DrawLines(array, num, num2, dataSerialStyle.LineColor, dataSerialStyle.LineWidth, dataSerialStyle.LineStyle);
								}
								num = j + 1;
							}
						}
					}
				}
			}
		}
	}
}