using System;
using System.Collections.Generic;
using System.Linq;
using CPF.Drawing;
using CPF.ReoGrid.Common;
using CPF.ReoGrid.Graphics;
using CPF.ReoGrid.Rendering;

namespace CPF.ReoGrid.Chart
{
	public class AxisSerialLabelView : AxisInfoView
	{
		public AxisSerialLabelView(AxisChart chart, AxisTypes axisType = AxisTypes.Primary, AxisOrientation orientation = AxisOrientation.Horizontal) : base(chart, axisType)
		{
			this.orientation = orientation;
		}

		protected override void OnPaint(RDrawingContext dc)
		{
			base.OnPaint(dc);
			bool flag = base.Chart == null;
			if (!flag)
			{
				AxisDataInfo axisDataInfo = (base.AxisType == AxisTypes.Primary) ? base.Chart.PrimaryAxisInfo : base.Chart.SecondaryAxisInfo;
				bool flag2 = axisDataInfo == null;
				if (!flag2)
				{
					IGraphics graphics = dc.Graphics;
					WorksheetChartDataSource dataSource = base.Chart.DataSource;
					Rect clientBounds = this.ClientBounds;
					Dictionary<int, string> dictionary = new Dictionary<int, string>();
					List<Size> list = new List<Size>();
					int categoryCount = dataSource.CategoryCount;
					double minimum = axisDataInfo.Minimum;
					for (int i = 0; i < categoryCount; i++)
					{
						string categoryName = dataSource.GetCategoryName(i);
						bool flag3 = !string.IsNullOrEmpty(categoryName);
						if (flag3)
						{
							dictionary[i] = categoryName;
							list.Add(DrawingFactory.Default.MeasureString(categoryName, ResourcePoolManager.CreateFont(this.FontName, (double)this.FontSize, CPF.Drawing.FontStyles.Regular)));
						}
						else
						{
							List<Size> list2 = list;
							float num = 0f;
							float num2 = 0f;
							list2.Add(new Size(ref num, ref num2));
						}
					}
					bool flag4 = this.orientation == AxisOrientation.Horizontal;
					if (flag4)
					{
						float num3 = clientBounds.Width / (float)categoryCount;
						float num4 = list.Max((Size b) => b.Width);
						float num5 = clientBounds.Width / num4;
						int num6 = (int)Math.Ceiling((double)((float)categoryCount / num5));
						bool flag5 = num6 < 1;
						if (flag5)
						{
							num6 = 1;
						}
						float num7 = clientBounds.Width / (float)categoryCount;
						for (int j = 0; j < categoryCount; j += num6)
						{
							string text;
							bool flag6 = dictionary.TryGetValue(j, out text) && !string.IsNullOrEmpty(text);
							if (flag6)
							{
								Size size = list[j];
								float num = num3 * (float)j;
								float num2 = 0f;
								float num8 = clientBounds.Height;
								Rect rect = new Rect(ref num, ref num2, ref num3, ref num8);
								graphics.DrawText(text, this.FontName, this.FontSize, base.ForeColor, rect, ReoGridHorAlign.Center, ReoGridVerAlign.Middle);
							}
						}
					}
					else
					{
						bool flag7 = this.orientation == AxisOrientation.Vertical;
						if (flag7)
						{
							float num9 = clientBounds.Height / (float)categoryCount;
							float num10 = list.Max((Size b) => b.Height);
							float num11 = clientBounds.Width / num10;
							int num12 = (int)Math.Ceiling((double)((float)categoryCount / num11));
							bool flag8 = num12 < 1;
							if (flag8)
							{
								num12 = 1;
							}
							for (int k = 0; k < categoryCount; k += num12)
							{
								string text2;
								bool flag9 = dictionary.TryGetValue(k, out text2) && !string.IsNullOrEmpty(text2);
								if (flag9)
								{
									Size size2 = list[k];
									float num = 0f;
									float num2 = num9 * (float)k;
									float num8 = clientBounds.Width;
									Rect rect2 = new Rect(ref num, ref num2, ref num8, ref num9);
									graphics.DrawText(text2, this.FontName, this.FontSize, base.ForeColor, rect2, ReoGridHorAlign.Center, ReoGridVerAlign.Middle);
								}
							}
						}
					}
				}
			}
		}

		private AxisOrientation orientation;
	}
}