using System;
using System.Drawing;
using System.Windows.Forms;
namespace LYFZ.OtherExpansion.SkinControl
{
	public class ChatListVScroll
	{
		private Rectangle bounds;
		private Rectangle upBounds;
		private Rectangle downBounds;
		private Rectangle sliderBounds;
		private Color backColor;
		private Color sliderDefaultColor;
		private Color sliderDownColor;
		private Color arrowBackColor;
		private Color arrowColor;
		private Control ctrl;
		private int virtualHeight;
		private int value;
		private bool shouldBeDraw;
		private bool isMouseDown;
		private bool isMouseOnSlider;
		private bool isMouseOnUp;
		private bool isMouseOnDown;
		private int mouseDownY;
		private int m_nLastSliderY;
		public Rectangle Bounds
		{
			get
			{
				return this.bounds;
			}
		}
		public Rectangle UpBounds
		{
			get
			{
				return this.upBounds;
			}
		}
		public Rectangle DownBounds
		{
			get
			{
				return this.downBounds;
			}
		}
		public Rectangle SliderBounds
		{
			get
			{
				return this.sliderBounds;
			}
		}
		public Color BackColor
		{
			get
			{
				return this.backColor;
			}
			set
			{
				this.backColor = value;
			}
		}
		public Color SliderDefaultColor
		{
			get
			{
				return this.sliderDefaultColor;
			}
			set
			{
				if (this.sliderDefaultColor == value)
				{
					return;
				}
				this.sliderDefaultColor = value;
				this.ctrl.Invalidate(this.sliderBounds);
			}
		}
		public Color SliderDownColor
		{
			get
			{
				return this.sliderDownColor;
			}
			set
			{
				if (this.sliderDownColor == value)
				{
					return;
				}
				this.sliderDownColor = value;
				this.ctrl.Invalidate(this.sliderBounds);
			}
		}
		public Color ArrowBackColor
		{
			get
			{
				return this.arrowBackColor;
			}
			set
			{
				if (this.arrowBackColor == value)
				{
					return;
				}
				this.arrowBackColor = value;
				this.ctrl.Invalidate(this.bounds);
			}
		}
		public Color ArrowColor
		{
			get
			{
				return this.arrowColor;
			}
			set
			{
				if (this.arrowColor == value)
				{
					return;
				}
				this.arrowColor = value;
				this.ctrl.Invalidate(this.bounds);
			}
		}
		public Control Ctrl
		{
			get
			{
				return this.ctrl;
			}
			set
			{
				this.ctrl = value;
			}
		}
		public int VirtualHeight
		{
			get
			{
				return this.virtualHeight;
			}
			set
			{
				if (value <= this.ctrl.Height)
				{
					if (!this.shouldBeDraw)
					{
						return;
					}
					this.shouldBeDraw = false;
					if (this.value != 0)
					{
						this.value = 0;
						this.ctrl.Invalidate();
					}
				}
				else
				{
					this.shouldBeDraw = true;
					if (value - this.value < this.ctrl.Height)
					{
						this.value -= this.ctrl.Height - value + this.value;
						this.ctrl.Invalidate();
					}
				}
				this.virtualHeight = value;
			}
		}
		public int Value
		{
			get
			{
				return this.value;
			}
			set
			{
				if (!this.shouldBeDraw)
				{
					return;
				}
				if (value < 0)
				{
					if (this.value == 0)
					{
						return;
					}
					this.value = 0;
					this.ctrl.Invalidate();
					return;
				}
				else
				{
					if (value <= this.virtualHeight - this.ctrl.Height)
					{
						this.value = value;
						this.ctrl.Invalidate();
						return;
					}
					if (this.value == this.virtualHeight - this.ctrl.Height)
					{
						return;
					}
					this.value = this.virtualHeight - this.ctrl.Height;
					this.ctrl.Invalidate();
					return;
				}
			}
		}
		public bool ShouldBeDraw
		{
			get
			{
				return this.shouldBeDraw;
			}
		}
		public bool IsMouseDown
		{
			get
			{
				return this.isMouseDown;
			}
			set
			{
				if (value)
				{
					this.m_nLastSliderY = this.sliderBounds.Y;
				}
				this.isMouseDown = value;
			}
		}
		public bool IsMouseOnSlider
		{
			get
			{
				return this.isMouseOnSlider;
			}
			set
			{
				if (this.isMouseOnSlider == value)
				{
					return;
				}
				this.isMouseOnSlider = value;
				this.ctrl.Invalidate(this.SliderBounds);
			}
		}
		public bool IsMouseOnUp
		{
			get
			{
				return this.isMouseOnUp;
			}
			set
			{
				if (this.isMouseOnUp == value)
				{
					return;
				}
				this.isMouseOnUp = value;
				this.ctrl.Invalidate(this.UpBounds);
			}
		}
		public bool IsMouseOnDown
		{
			get
			{
				return this.isMouseOnDown;
			}
			set
			{
				if (this.isMouseOnDown == value)
				{
					return;
				}
				this.isMouseOnDown = value;
				this.ctrl.Invalidate(this.DownBounds);
			}
		}
		public int MouseDownY
		{
			get
			{
				return this.mouseDownY;
			}
			set
			{
				this.mouseDownY = value;
			}
		}
		public ChatListVScroll(Control c)
		{
			this.ctrl = c;
			this.virtualHeight = 400;
			this.bounds = new Rectangle(0, 0, 5, 5);
			this.upBounds = new Rectangle(0, 0, 5, 5);
			this.downBounds = new Rectangle(0, 0, 5, 5);
			this.sliderBounds = new Rectangle(0, 0, 5, 5);
			this.backColor = Color.FromArgb(50, 224, 239, 235);
			this.sliderDefaultColor = Color.FromArgb(100, 110, 111, 112);
			this.sliderDownColor = Color.FromArgb(200, 110, 111, 112);
			this.arrowBackColor = Color.Transparent;
			this.arrowColor = Color.FromArgb(200, 148, 150, 151);
		}
		public void ClearAllMouseOn()
		{
			if (!this.isMouseOnDown && !this.isMouseOnSlider && !this.isMouseOnUp)
			{
				return;
			}
			this.isMouseOnSlider = (this.isMouseOnDown = (this.isMouseOnUp = false));
			this.ctrl.Invalidate(this.bounds);
		}
		public void MoveSliderToLocation(int nCurrentMouseY)
		{
			if (nCurrentMouseY - this.sliderBounds.Height / 2 < 11)
			{
				this.sliderBounds.Y = 11;
			}
			else
			{
				if (nCurrentMouseY + this.sliderBounds.Height / 2 > this.ctrl.Height - 11)
				{
					this.sliderBounds.Y = this.ctrl.Height - this.sliderBounds.Height - 11;
				}
				else
				{
					this.sliderBounds.Y = nCurrentMouseY - this.sliderBounds.Height / 2;
				}
			}
			this.value = (int)((double)(this.sliderBounds.Y - 11) / (double)(this.ctrl.Height - 22 - this.SliderBounds.Height) * (double)(this.virtualHeight - this.ctrl.Height));
			this.ctrl.Invalidate();
		}
		public void MoveSliderFromLocation(int nCurrentMouseY)
		{
			if (this.m_nLastSliderY + nCurrentMouseY - this.mouseDownY < 11)
			{
				if (this.sliderBounds.Y == 11)
				{
					return;
				}
				this.sliderBounds.Y = 11;
			}
			else
			{
				if (this.m_nLastSliderY + nCurrentMouseY - this.mouseDownY > this.ctrl.Height - 11 - this.SliderBounds.Height)
				{
					if (this.sliderBounds.Y == this.ctrl.Height - 11 - this.sliderBounds.Height)
					{
						return;
					}
					this.sliderBounds.Y = this.ctrl.Height - 11 - this.sliderBounds.Height;
				}
				else
				{
					this.sliderBounds.Y = this.m_nLastSliderY + nCurrentMouseY - this.mouseDownY;
				}
			}
			this.value = (int)((double)(this.sliderBounds.Y - 11) / (double)(this.ctrl.Height - 22 - this.SliderBounds.Height) * (double)(this.virtualHeight - this.ctrl.Height));
			this.ctrl.Invalidate();
		}
		public void ReDrawScroll(Graphics g)
		{
			if (!this.shouldBeDraw)
			{
				return;
			}
			this.bounds.X = this.ctrl.Width - 7;
			this.bounds.Height = this.ctrl.Height;
			this.upBounds.X = (this.downBounds.X = this.bounds.X);
			this.downBounds.Y = this.ctrl.Height - 5;
			this.sliderBounds.X = this.bounds.X;
			this.sliderBounds.Height = (int)((double)this.ctrl.Height / (double)this.virtualHeight * (double)(this.ctrl.Height - 22));
			if (this.sliderBounds.Height < 3)
			{
				this.sliderBounds.Height = 3;
			}
			this.sliderBounds.Y = 11 + (int)((double)this.value / (double)(this.virtualHeight - this.ctrl.Height) * (double)(this.ctrl.Height - 22 - this.sliderBounds.Height));
			SolidBrush sb = new SolidBrush(this.backColor);
			try
			{
				g.FillRectangle(sb, this.bounds);
				sb.Color = this.arrowBackColor;
				g.FillRectangle(sb, this.upBounds);
				g.FillRectangle(sb, this.downBounds);
				if (this.isMouseDown || this.isMouseOnSlider)
				{
					sb.Color = this.sliderDownColor;
				}
				else
				{
					sb.Color = this.sliderDefaultColor;
				}
				g.FillRectangle(sb, this.sliderBounds);
				sb.Color = this.arrowColor;
				bool arg_1A1_0 = this.isMouseOnUp;
				bool arg_1A8_0 = this.isMouseOnDown;
			}
			finally
			{
				sb.Dispose();
			}
		}
	}
}