using System;
using System.Collections.Generic;
using CPF.Drawing;
using CPF.ReoGrid.Drawing.Text;
using CPF.ReoGrid.Graphics;
using CPF.ReoGrid.Interaction;
using CPF.ReoGrid.Rendering;

namespace CPF.ReoGrid.Drawing
{
	[Serializable]
	public class DrawingObject : SelectableFloatingObject, IDrawingObject, IFloatingObject, IUserVisual, IThumbVisualObject
	{
		public DrawingObject()
		{
			this.clientBounds = base.Bounds;
			this.ScaleX = 1f;
			this.ScaleY = 1f;
			this.ForeColor = Color.Black;
			this.LineColor = Color.Black;
			this.FillColor = Color.White;
			this.FontName = "Arial";
			this.FontSize = 8.25f;
			this.LineWidth = 1f;
		}

		public IDrawingContainer Container { get; set; }

		public override void Invalidate()
		{
			bool flag = this.Container != null;
			if (flag)
			{
				this.Container.Invalidate();
			}
		}

		public virtual Rect ClientBounds
		{
			get
			{
				return this.clientBounds;
			}
		}

		public virtual Point OriginPoint { get; protected set; }

		public virtual float ScaleX { get; set; }

		public virtual float ScaleY { get; set; }

		public virtual float RotateAngle { get; set; }

		public bool Visible
		{
			get
			{
				return this.visible;
			}
			set
			{
				bool flag = this.visible != value;
				if (flag)
				{
					this.visible = value;
					this.Invalidate();
				}
			}
		}

		internal PaddingValue Padding { get; set; }

		public Color FillColor { get; set; }

		public Color ForeColor { get; set; }

		public Color LineColor { get; set; }

		public float LineWidth { get; set; }

		public LineStyles LineStyle { get; set; }

		public virtual string FontName { get; set; }

		public virtual float FontSize { get; set; }

		public virtual CPF.ReoGrid.Drawing.Text.FontStyles FontStyles { get; set; }

		public IDrawingObjectStyle Style
		{
			get
			{
				bool flag = this.styleProxy == null;
				if (flag)
				{
					this.styleProxy = new DrawingObjectStyle(this);
				}
				return this.styleProxy;
			}
		}

		public virtual void Draw(RDrawingContext dc)
		{
			Rect rect = this.ClientBounds;
			IGraphics graphics = dc.Graphics;
			bool flag = this.innerX != 0f || this.innerY != 0f || this.ScaleX != 1f || this.ScaleY != 1f || this.RotateAngle != 0f;
			if (flag)
			{
				graphics.PushTransform();
				bool flag2 = this.ScaleX != 1f || this.ScaleY != 1f;
				if (flag2)
				{
					graphics.ScaleTransform(this.ScaleX, this.ScaleY);
				}
				bool flag3 = this.RotateAngle != 0f;
				if (flag3)
				{
					graphics.TranslateTransform(this.innerX + this.halfWidth, this.innerY + this.halfHeight);
					graphics.RotateTransform(this.RotateAngle);
					graphics.TranslateTransform(-this.halfWidth, -this.halfHeight);
				}
				else
				{
					graphics.TranslateTransform(this.innerX, this.innerY);
				}
				this.OnPaint(dc);
				graphics.PopTransform();
			}
			else
			{
				this.OnPaint(dc);
			}
			bool isSelected = this.IsSelected;
			if (isSelected)
			{
				this.DrawSelection(dc);
			}
		}

		protected virtual void OnPaint(RDrawingContext dc)
		{
			IGraphics graphics = dc.Graphics;
			float num = 0f;
			float num2 = 0f;
			float width = base.Width;
			float height = base.Height;
			Rect rect = new Rect(ref num, ref num2, ref width, ref height);
			bool flag = !this.FillColor.IsTransparent && !this.LineColor.IsTransparent;
			if (flag)
			{
				graphics.DrawAndFillRectangle(rect, this.LineColor, this.FillColor, this.LineWidth, this.LineStyle);
			}
			else
			{
				bool flag2 = !this.FillColor.IsTransparent;
				if (flag2)
				{
					graphics.FillRectangle(rect, this.FillColor);
				}
				else
				{
					bool flag3 = this.LineColor.A > 0;
					if (flag3)
					{
						graphics.DrawRectangle(rect, this.LineColor, this.LineWidth, this.LineStyle);
					}
				}
			}
		}

		protected virtual void DrawSelection(RDrawingContext dc)
		{
			IGraphics graphics = dc.Graphics;
			graphics.DrawRectangle(base.Bounds, Color.DeepSkyBlue);
			bool flag = this.resizePoints != null && this.resizePoints.Length != 0;
			if (flag)
			{
				foreach (ResizeThumb resizeThumb in this.resizePoints)
				{
					Point point = resizeThumb.Point;
					graphics.DrawEllipse(Color.SeaGreen, point.X - 2f, point.Y - 2f, 4f, 4f);
				}
			}
		}

		protected internal override void InternalBoundsUpdate(Rect oldBounds)
		{
			float left = this.Padding.Left;
			float top = this.Padding.Top;
			float num = this.innerWidth - this.Padding.Left - this.Padding.Right;
			float num2 = this.innerHeight - this.Padding.Top - this.Padding.Bottom;
			Rect rect = new Rect(ref left, ref top, ref num, ref num2);
			bool flag = rect.Width < 0f;
			if (flag)
			{
				rect.Width = 0f;
			}
			bool flag2 = rect.Height < 0f;
			if (flag2)
			{
				rect.Height = 0f;
			}
			this.clientBounds = rect;
			this.halfWidth = this.innerWidth / 2f;
			this.halfHeight = this.innerHeight / 2f;
			this.OriginPoint = new Point(ref this.halfWidth, ref this.halfHeight);
			base.InternalBoundsUpdate(oldBounds);
		}

		public override void OnSelect()
		{
			this.UpdateResizeThumbPoints();
			base.OnSelect();
		}

		public override void OnDeselect()
		{
			base.OnDeselect();
		}

		public IEnumerable<ResizeThumb> ThumbPoints
		{
			get
			{
				return this.resizePoints;
			}
		}

		protected internal void UpdateResizeThumbPoints()
		{
			this.resizePoints[0] = new ResizeThumb(ResizeThumbPosition.TopLeft, this.innerX, this.innerY);
			this.resizePoints[1] = new ResizeThumb(ResizeThumbPosition.Top, this.innerX + this.halfWidth, this.innerY);
			this.resizePoints[2] = new ResizeThumb(ResizeThumbPosition.TopRight, base.Right, this.innerY);
			this.resizePoints[3] = new ResizeThumb(ResizeThumbPosition.Left, this.innerX, this.innerY + this.halfHeight);
			this.resizePoints[4] = new ResizeThumb(ResizeThumbPosition.Right, base.Right, this.innerY + this.halfHeight);
			this.resizePoints[5] = new ResizeThumb(ResizeThumbPosition.BottomLeft, this.innerX, base.Bottom);
			this.resizePoints[6] = new ResizeThumb(ResizeThumbPosition.Bottom, this.innerX + this.halfWidth, base.Bottom);
			this.resizePoints[7] = new ResizeThumb(ResizeThumbPosition.BottomRight, base.Right, base.Bottom);
		}

		private Rect clientBounds;

		private float halfWidth;

		private float halfHeight;

		private bool visible = true;

		private DrawingObjectStyle styleProxy = null;

		private ResizeThumb[] resizePoints = new ResizeThumb[8];
	}
}