/// <summary>
			/// Add custom logic before the <see cref="E:Genetibase.Shared.Windows.NuGenWndLessControl.Paint"/> event will be raised.
			/// </summary>
			/// <param name="e"></param>
			protected override void OnPaint(PaintEventArgs e)
			{
				NuGenPaintParams paintParams = new NuGenPaintParams(e.Graphics);
				paintParams.Bounds = this.Bounds;
				paintParams.State = this.ButtonStateTracker.GetControlState();
				this.Renderer.DrawDropDownButton(paintParams);
			}

		/// <summary>
		/// </summary>
		/// <param name="paintParams"></param>
		/// <exception cref="ArgumentNullException">
		/// <para><paramref name="paintParams"/> is <see langword="null"/>.</para>
		/// </exception>
		public void DrawCCWRotateButton(NuGenPaintParams paintParams)
		{
			if (paintParams == null)
			{
				throw new ArgumentNullException("paintParams");
			}

			NuGenImagePaintParams imagePaintParams = new NuGenImagePaintParams(paintParams);

			switch (imagePaintParams.State)
			{
				case NuGenControlState.Hot:
				case NuGenControlState.Pressed:
				{
					imagePaintParams.Image = res.RotateCCW_Hot;
					break;
				}
				default:
				{
					imagePaintParams.Image = res.RotateCCW_Normal;
					break;
				}
			}

			this.DrawImage(imagePaintParams);
		}

		/// <summary>
		/// </summary>
		/// <param name="paintParams"></param>
		/// <exception cref="ArgumentNullException">
		/// <para><paramref name="paintParams"/> is <see langword="null"/>.</para>
		/// </exception>
		public void DrawDropDownArrow(NuGenPaintParams paintParams)
		{
			if (paintParams == null)
			{
				throw new ArgumentNullException("paintParams");
			}

			Graphics g = paintParams.Graphics;
			Rectangle bounds = paintParams.Bounds;
			NuGenControlState state = paintParams.State;

			int x = bounds.Left + bounds.Width / 2;
			int y = bounds.Top + bounds.Height / 2 - 3;

			Point[] arrowPoints = new Point[] {
				new Point(x - 3, y),
				new Point(x + 2, y),
				new Point(x, y + 3)
			};

			using (SolidBrush sb = new SolidBrush(this.ColorManager.GetBorderColor(state)))
			{
				PixelOffsetMode oldPixelOffsetMode = g.PixelOffsetMode;
				g.PixelOffsetMode = PixelOffsetMode.HighQuality;
				g.FillPolygon(sb, arrowPoints);
				g.PixelOffsetMode = oldPixelOffsetMode;
			}
		}

		/// <summary>
		/// </summary>
		/// <param name="paintParams"></param>
		/// <exception cref="ArgumentNullException">
		/// <para><paramref name="paintParams"/> is <see langword="null"/>.</para>
		/// </exception>
		public void DrawDoubleScrollButton(NuGenPaintParams paintParams)
		{
			if (paintParams == null)
			{
				throw new ArgumentNullException("paintParams");
			}

			this.DrawBackground(paintParams);
			this.DrawBorder(paintParams);

			Rectangle bounds = paintParams.Bounds;

			paintParams.Bounds = new Rectangle(
				bounds.Left
				, bounds.Top - 3
				, bounds.Width
				, bounds.Height
			);
			this.DrawScrollButtonBody(paintParams);

			paintParams.Bounds = new Rectangle(
				bounds.Left
				, bounds.Top + 3
				, bounds.Width
				, bounds.Height
			);
			this.DrawScrollButtonBody(paintParams);
		}

			protected override void OnPaint(PaintEventArgs e)
			{
				NuGenPaintParams paintParams = new NuGenPaintParams(e.Graphics);
				paintParams.Bounds = this.ClientRectangle;
				paintParams.State = this.StateTracker.GetControlState();
				this.Renderer.DrawToolBarSeparator(paintParams);
			}

		/// <summary>
		/// </summary>
		/// <param name="paintParams"></param>
		/// <exception cref="ArgumentNullException">
		/// <para><paramref name="paintParams"/> is <see langword="null"/>.</para>
		/// </exception>
		public void DrawExtendedBackground(NuGenPaintParams paintParams)
		{
			if (paintParams == null)
			{
				throw new ArgumentNullException("paintParams");
			}

			this.DrawBackground(paintParams);
			Color borderColor = this.ColorManager.GetBorderColor(paintParams.State);
			Graphics g = paintParams.Graphics;
			Rectangle bounds = paintParams.Bounds;

			int ellipseWidth = 2 * bounds.Width;
			int ellipseHeight = 2 * bounds.Height;

			int ellipseStart = 0;
			int ellipseStep = 50;

			using (SolidBrush sb = new SolidBrush(Color.FromArgb(20, borderColor)))
			{
				g.FillEllipse(sb, ellipseStart, ellipseStart, ellipseWidth, ellipseHeight);
				g.FillEllipse(sb, ellipseStart + ellipseStep, ellipseStart + ellipseStep, ellipseWidth, ellipseHeight);
				g.FillEllipse(sb, ellipseStart + ellipseStep * 2, ellipseStart + ellipseStep * 2, ellipseWidth, ellipseHeight);
			}
		}

		void INuGenRoundedPanelRenderer.DrawBackground(NuGenPaintParams paintParams)
		{
			if (paintParams == null)
			{
				throw new ArgumentNullException("paintParams");
			}

			base.DrawRoundBackground(paintParams);

			Graphics g = paintParams.Graphics;
			Rectangle bounds = paintParams.Bounds;
			NuGenControlState state = paintParams.State;

			RectangleF ellipseBounds = new RectangleF(
				bounds.Left - bounds.Width * 0.2f
				, bounds.Top + bounds.Height * 0.6f
				, bounds.Width * 2
				, bounds.Height
			);

			if (ellipseBounds.Width > 0 && ellipseBounds.Height > 0)
			{
				Color beginColor = Color.FromArgb(60, this.ColorManager.GetBorderColor(state));
				Color endColor = Color.FromArgb(10, this.ColorManager.GetBackgroundGradientEnd(state));

				using (Brush brush = new LinearGradientBrush(ellipseBounds, beginColor, endColor, 0.0f))
				{
					g.SetClip(bounds, CombineMode.Replace);
					g.FillEllipse(brush, ellipseBounds);
				}
			}
		}

		/// <summary>
		/// </summary>
		/// <param name="paintParams"></param>
		public void DrawShadow(NuGenPaintParams paintParams)
		{
			if (paintParams == null)
			{
				throw new ArgumentNullException("paintParams");
			}

			Graphics g = paintParams.Graphics;
			Rectangle bounds = paintParams.Bounds;

			int alpha = 0;
			Color baseColor = Color.Black;
			int alphaStep = 5;
			Padding deflatePadding = new Padding(1);

			using (NuGenGrfxMode mode = new NuGenGrfxMode(g))
			{
				NuGenControlPaint.SetGraphicsVeryHighQuality(g);

				using (Pen pen = new Pen(Color.FromArgb(alpha, baseColor)))
				{
					for (int i = 0; i <= _shadowStepCount; i++)
					{
						g.DrawRectangle(pen, bounds);
						pen.Color = Color.FromArgb(alpha += alphaStep, baseColor);
						bounds = NuGenControlPaint.DeflateRectangle(bounds, deflatePadding);

						if (i == 1)
						{
							alphaStep = 10;
						}
					}
				}
			}
		}

		/// <summary>
		/// </summary>
		/// <param name="paintParams"></param>
		public void DrawBorder(NuGenPaintParams paintParams)
		{
			base.DrawBorder(
				paintParams.Graphics
				, NuGenControlPaint.BorderRectangle(paintParams.Bounds)
				, paintParams.State
			);
		}

		/// <summary>
		/// </summary>
		/// <param name="paintParams"></param>
		/// <exception cref="ArgumentNullException"><paramref name="paintParams"/> is <see langword="null"/>.</exception>
		public void DrawBorder(NuGenPaintParams paintParams)
		{
			if (paintParams == null)
			{
				throw new ArgumentNullException("paintParams");
			}

			base.DrawBorder(paintParams.Graphics, paintParams.Bounds, paintParams.State);
		}

		/*
		 * DrawShadow
		 */

		/// <summary>
		/// </summary>
		/// <param name="paintParams"></param>
		public void DrawShadow(NuGenPaintParams paintParams)
		{
			if (paintParams == null)
			{
				throw new ArgumentNullException("paintParams");
			}

			this.DrawShadow(paintParams.Graphics, NuGenSmoothButtonRenderer.GetBorderRectangle(paintParams.Bounds), paintParams.State);
		}

		/// <summary>
		/// </summary>
		/// <param name="paintParams"></param>
		/// <exception cref="ArgumentNullException">
		/// <para>
		///		<paramref name="paintParams"/> is <see langword="null"/>.
		/// </para>
		/// </exception>
		public void DrawBorder(NuGenPaintParams paintParams)
		{
			if (paintParams == null)
			{
				throw new ArgumentNullException("paintParams");
			}

			this.DrawBorder(paintParams.Graphics, NuGenControlPaint.BorderRectangle(paintParams.Bounds), paintParams.State);
		}

		/*
		 * DrawComboBoxButton
		 */

		/// <summary>
		/// </summary>
		/// <param name="paintParams"></param>
		/// <exception cref="ArgumentNullException">
		/// <para><paramref name="paintParams"/> is <see langword="null"/>.</para>
		/// </exception>
		/// <exception cref="InvalidOperationException">
		/// <para>
		///		Border should return an array containing at least 1 element.
		/// </para>
		/// </exception>
		public void DrawComboBoxButton(NuGenPaintParams paintParams)
		{
			if (paintParams == null)
			{
				throw new ArgumentNullException("paintParams");
			}

			this.DrawScrollButton(paintParams);
		}

		/// <summary>
		/// </summary>
		/// <param name="paintParams"></param>
		/// <exception cref="ArgumentNullException"><para><paramref name="paintParams"/> is <see langword="null"/>.</para></exception>
		public void DrawDropDownButton(NuGenPaintParams paintParams)
		{
			if (paintParams == null)
			{
				throw new ArgumentNullException("paintParams");
			}

			this.DrawScrollButtonBody(paintParams);
		}

		/*
		 * DrawBackground
		 */

		/// <summary>
		/// </summary>
		/// <param name="paintParams"></param>
		/// <exception cref="ArgumentNullException"><paramref name="paintParams"/> is <see langword="null"/>.</exception>
		public new void DrawBackground(NuGenPaintParams paintParams)
		{
			if (paintParams == null)
			{
				throw new ArgumentNullException("paintParams");
			}

			base.DrawRoundBackground(paintParams);
		}

		void INuGenPanelExRenderer.DrawBackground(NuGenPaintParams paintParams)
		{
			if (paintParams == null)
			{
				throw new ArgumentNullException("paintParams");
			}

			base.DrawBackground(paintParams);
			RendererUtils.DrawBackground(this.ServiceProvider, paintParams);
		}

		/// <summary>
		/// </summary>
		/// <param name="paintParams"></param>
		/// <exception cref="ArgumentNullException">
		/// <para><paramref name="paintParams"/> is <see langword="null"/>.</para>
		/// </exception>
		public void DrawButtonBorder(NuGenPaintParams paintParams)
		{
			if (paintParams == null)
			{
				throw new ArgumentNullException("paintParams");
			}

			Rectangle borderRectangle = paintParams.Bounds;
			borderRectangle.Width--;
			this.DrawBorder(paintParams.Graphics, borderRectangle, paintParams.State);
		}

		/// <summary>
		/// </summary>
		/// <param name="paintParams"></param>
		/// <exception cref="ArgumentNullException">
		/// <para><paramref name="paintParams"/> is <see langword="null"/>.</para>
		/// </exception>
		public void DrawScrollTrack(NuGenPaintParams paintParams)
		{
			if (paintParams == null)
			{
				throw new ArgumentNullException("paintParams");
			}

			Graphics g = paintParams.Graphics;
			Rectangle bounds = paintParams.Bounds;
			NuGenControlState state = paintParams.State;

			Color borderColor = this.ColorManager.GetBorderColor(NuGenControlState.Normal);
			Color bkgndColor;

			switch (state)
			{
				case NuGenControlState.Pressed:
				{
					bkgndColor = Color.FromArgb(130, borderColor);
					break;
				}
				case NuGenControlState.Hot:
				{
					bkgndColor = Color.FromArgb(90, borderColor);
					break;
				}
				default:
				{
					bkgndColor = Color.FromArgb(50, borderColor);
					break;
				}
			}

			using (SolidBrush sb = new SolidBrush(bkgndColor))
			{
				g.FillRectangle(sb, bounds);
			}
			
			Rectangle borderRectangle = NuGenControlPaint.BorderRectangle(bounds);

			this.DrawLine(
				g,
				NuGenControlPaint.RectTLCorner(borderRectangle),
				NuGenControlPaint.RectTRCorner(borderRectangle),
				NuGenControlState.Normal
			);
			this.DrawLine(
				g,
				NuGenControlPaint.RectBLCorner(borderRectangle),
				NuGenControlPaint.RectBRCorner(borderRectangle),
				NuGenControlState.Normal
			);
		}

		void INuGenButtonRenderer.DrawBackground(NuGenPaintParams paintParams)
		{
			if (paintParams == null)
			{
				throw new ArgumentNullException("paintParams");
			}

			this.DrawBackground(
				paintParams.Graphics,
				Rectangle.Inflate(paintParams.Bounds, -2, -2),
				paintParams.State
			);
		}

		/// <summary>
		/// </summary>
		/// <param name="paintParams"></param>
		/// <exception cref="ArgumentNullException">
		/// <para>
		///		<paramref name="paintParams"/> is <see langword="null"/>.
		/// </para>
		/// </exception>
		public void DrawDocComment(NuGenPaintParams paintParams)
		{
			if (paintParams == null)
			{
				throw new ArgumentNullException("paintParams");
			}

			Graphics g = paintParams.Graphics;
			Rectangle bounds = paintParams.Bounds;
			NuGenControlState state = paintParams.State;

			this.DrawBackground(paintParams);
			this.DrawBorder(g, NuGenControlPaint.BorderRectangle(bounds), state);
		}