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

namespace CPF.ReoGrid.CellTypes
{
	public abstract class ContentCellBody : CellBody
	{
		public virtual Rect ContentBounds { get; set; }

		protected virtual Size GetContentSize()
		{
			float num = 17f;
			float num2 = 17f;
			return new Size(ref num, ref num2);
		}

		public override void OnBoundsChanged()
		{
			base.OnBoundsChanged();
			float num = 0f;
			float num2 = 0f;
			Point point = new Point(ref num, ref num2);
			Size contentSize = this.GetContentSize();
			Rect contentBounds = new Rect(ref point, ref contentSize);
			bool flag = base.Cell != null;
			if (flag)
			{
				float num3 = 0f;
				float num4 = 0f;
				switch (base.Cell.InnerStyle.HAlign)
				{
				case ReoGridHorAlign.Left:
					num3 = this.Bounds.X + 1f;
					break;
				case ReoGridHorAlign.Center:
					num3 = this.Bounds.X + (this.Bounds.Width - contentBounds.Width) / 2f;
					break;
				case ReoGridHorAlign.Right:
					num3 = this.Bounds.Right - contentBounds.Width - 1f;
					break;
				}
				switch (base.Cell.InnerStyle.VAlign)
				{
				case ReoGridVerAlign.Top:
					num4 = this.Bounds.Y + 1f;
					break;
				case ReoGridVerAlign.Middle:
					num4 = this.Bounds.Y + (this.Bounds.Height - contentBounds.Height) / 2f;
					break;
				case ReoGridVerAlign.Bottom:
					num4 = this.Bounds.Bottom - contentBounds.Height - 1f;
					break;
				}
				num = contentBounds.Width;
				num2 = contentBounds.Height;
				contentBounds = new Rect(ref num3, ref num4, ref num, ref num2);
			}
			else
			{
				num = base.Bounds.X + (base.Bounds.Width - contentBounds.Width) / 2f;
				num2 = base.Bounds.Y + (base.Bounds.Height - contentBounds.Height) / 2f;
				float width = contentBounds.Width;
				float height = contentBounds.Height;
				contentBounds = new Rect(ref num, ref num2, ref width, ref height);
			}
			this.ContentBounds = contentBounds;
		}

		public override void OnPaint(CellDrawingContext dc)
		{
			dc.DrawCellBackground();
			bool flag = this.ContentBounds.Width > 0f || this.ContentBounds.Height > 0f;
			if (flag)
			{
				this.OnContentPaint(dc);
			}
		}

		protected virtual void OnContentPaint(CellDrawingContext dc)
		{
		}
	}
}