DotNet 4.8.1 build of DotNetBar

PROMS/DotNetBar Source Code/SplitterPainter.cs

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+using System;
+using System.Windows.Forms;
+using System.Drawing;
+
+namespace DevComponents.DotNetBar
+{
+	/// <summary>
+	/// Base class for painting expandable splitter control.
+	/// </summary>
+	internal abstract class SplitterPainter
+	{
+		#region Private Variables
+		private int m_ArrowSize=6;
+		#endregion
+
+		/// <summary>
+		/// Default constructor.
+		/// </summary>
+		public SplitterPainter()
+		{
+		}
+
+		#region Methods
+		/// <summary>
+		/// Paints splitter.
+		/// </summary>
+		/// <param name="info">Paint information.</param>
+		public virtual void Paint(SplitterPaintInfo info)
+		{
+		}
+
+		protected virtual void PaintArrow(Point p, SplitterPaintInfo info)
+		{
+			System.Drawing.Drawing2D.GraphicsPath path=UIGraphics.GetTrianglePath(p,ArrowSize,this.GetDirection(info));
+			if(!info.Colors.ExpandFillColor.IsEmpty)
+			{
+				using(SolidBrush brush=new SolidBrush(info.Colors.ExpandFillColor))
+					info.Graphics.FillPath(brush,path);
+			}
+			if(!info.Colors.ExpandLineColor.IsEmpty)
+			{
+				using(Pen pen=new Pen(info.Colors.ExpandLineColor,1))
+					info.Graphics.DrawPath(pen,path);
+			}
+			path.Dispose();
+		}
+
+		protected eTriangleDirection GetDirection(SplitterPaintInfo info)
+		{
+			if(info.Dock==DockStyle.Top && info.Expanded || info.Dock==DockStyle.Bottom && !info.Expanded)
+			{
+				// Points up
+				return eTriangleDirection.Top;
+			}
+			else if(info.Dock==DockStyle.Top && !info.Expanded || info.Dock==DockStyle.Bottom && info.Expanded)
+			{
+				// Points down
+				return eTriangleDirection.Bottom;
+			}
+			else if(info.Dock==DockStyle.Left && info.Expanded || info.Dock==DockStyle.Right && !info.Expanded)
+			{
+				// Points left
+				return eTriangleDirection.Left;
+			}
+			return eTriangleDirection.Right;
+		}
+
+		protected System.Drawing.Drawing2D.LinearGradientBrush CreateLinearGradientBrush(Rectangle r,Color color1, Color color2,float gradientAngle)
+		{
+			return new System.Drawing.Drawing2D.LinearGradientBrush(new Rectangle(r.X-1,r.Y-1,r.Width+1,r.Height+1),color1,color2,gradientAngle);
+		}
+
+		protected virtual void PaintBackground(SplitterPaintInfo info)
+		{
+			int gradientAngle=info.Colors.BackColorGradientAngle;
+			Rectangle r=info.DisplayRectangle;
+
+			if(info.Dock==DockStyle.Top || info.Dock==DockStyle.Bottom)
+				gradientAngle+=90;
+
+			if(info.Colors.BackColor2.IsEmpty)
+			{
+				using(SolidBrush brush=new SolidBrush(info.Colors.BackColor))
+					info.Graphics.FillRectangle(brush,r);
+			}
+			else
+			{
+				using(System.Drawing.Drawing2D.LinearGradientBrush brush=CreateLinearGradientBrush(r,info.Colors.BackColor,info.Colors.BackColor2,gradientAngle))
+					info.Graphics.FillRectangle(brush,r);
+			}
+		}
+		#endregion
+
+		#region Properties
+		protected int ArrowSize
+		{
+			get {return m_ArrowSize;}
+			set {m_ArrowSize=value;}
+		}
+		#endregion
+	}
+
+	#region SplitterPaintInfo
+	/// <summary>
+	/// Represents class that holds information neccessary to paint the expandable splitter.
+	/// </summary>
+	internal class SplitterPaintInfo
+	{
+		/// <summary>
+		/// Specifies reference to graphics canvas.
+		/// </summary>
+		public System.Drawing.Graphics Graphics;
+		/// <summary>
+		/// Specifies splitter display rectangle.
+		/// </summary>
+		public System.Drawing.Rectangle DisplayRectangle;
+		/// <summary>
+		/// Holds color settings for painting.
+		/// </summary>
+		public SplitterColors Colors;
+		/// <summary>
+		/// Specifies whether splitter is expandable or not.
+		/// </summary>
+		public bool Expandable;
+		/// <summary>
+		/// Specifies whether splitter is expanded or not.
+		/// </summary>
+		public bool Expanded;
+		/// <summary>
+		/// Specifies the splitter dock.
+		/// </summary>
+		public System.Windows.Forms.DockStyle Dock;
+	}
+	#endregion
+
+	#region SplitterColors
+	/// <summary>
+	/// Represents class that holds colors for the splitter display.
+	/// </summary>
+	internal class SplitterColors
+	{
+		/// <summary>
+		/// Specifies back color.
+		/// </summary>
+		public Color BackColor=Color.Empty;
+		/// <summary>
+		/// Specifies target gradient background color.
+		/// </summary>
+		public Color BackColor2=Color.Empty;
+		/// <summary>
+		/// Specifies background gradient angle.
+		/// </summary>
+		public int BackColorGradientAngle=0;
+		/// <summary>
+		/// Specifies grip part dark color.
+		/// </summary>
+		public Color GripDarkColor=Color.Empty;
+		/// <summary>
+		/// Specifies grip part light color.
+		/// </summary>
+		public Color GripLightColor=Color.Empty;
+		/// <summary>
+		/// Specifies expand part line color.
+		/// </summary>
+		public Color ExpandLineColor=Color.Empty;
+		/// <summary>
+		/// Specifies expand part fill color.
+		/// </summary>
+		public Color ExpandFillColor=Color.Empty;
+	}
+	#endregion
+}