Click here to Skip to main content
15,884,425 members
Articles / Multimedia / GDI+

A flexible charting library for .NET

Rate me:
Please Sign up or sign in to vote.
4.70/5 (1,112 votes)
6 Jun 200730 min read 8.9M   180.2K   2.1K  
Looking for a way to draw 2D line graphs with C#? Here's yet another charting class library with a high degree of configurability, that is also easy to use.
//============================================================================
//ZedGraph Class Library - A Flexible Line Graph/Bar Graph Library in C#
//Copyright � 2006  John Champion
//
//This library is free software; you can redistribute it and/or
//modify it under the terms of the GNU Lesser General Public
//License as published by the Free Software Foundation; either
//version 2.1 of the License, or (at your option) any later version.
//
//This library is distributed in the hope that it will be useful,
//but WITHOUT ANY WARRANTY; without even the implied warranty of
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
//Lesser General Public License for more details.
//
//You should have received a copy of the GNU Lesser General Public
//License along with this library; if not, write to the Free Software
//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//=============================================================================

using System;
using System.Drawing;
using System.Text;
using System.Runtime.Serialization;
using System.Security.Permissions;

namespace ZedGraph
{
	/// <summary>
	/// Class that holds the specific properties for the minor tics.
	/// </summary>
	/// <author> John Champion </author>
	/// <version> $Revision: 3.1 $ $Date: 2006/06/24 20:26:44 $ </version>
	[Serializable]
	public class MinorTic : ICloneable, ISerializable
	{
		internal bool	_isOutside,
							_isInside,
							_isOpposite,
							_isCrossOutside,
							_isCrossInside;

		internal float _penWidth,
							_size;

		internal Color _color;

	#region Constructors

		/// <summary>
		/// Default Constructor
		/// </summary>
		public MinorTic()
		{
			_size = Default.Size;
			_color = Default.Color;
			_penWidth = Default.PenWidth;

			this.IsOutside = Default.IsOutside;
			this.IsInside = Default.IsInside;
			this.IsOpposite = Default.IsOpposite;
			_isCrossOutside = Default.IsCrossOutside;
			_isCrossInside = Default.IsCrossInside;
		}

		/// <summary>
		/// Copy constructor.
		/// </summary>
		/// <param name="rhs">The <see cref="MinorTic" /> that is to be copied.</param>
		public MinorTic( MinorTic rhs )
		{
			_size = rhs._size;
			_color = rhs._color;
			_penWidth = rhs._penWidth;

			this.IsOutside = rhs.IsOutside;
			this.IsInside = rhs.IsInside;
			this.IsOpposite = rhs.IsOpposite;
			_isCrossOutside = rhs._isCrossOutside;
			_isCrossInside = rhs._isCrossInside;
		}

		/// <summary>
		/// Implement the <see cref="ICloneable" /> interface in a typesafe manner by just
		/// calling the typed version of <see cref="Clone" />
		/// </summary>
		/// <returns>A deep copy of this object</returns>
		object ICloneable.Clone()
		{
			return this.Clone();
		}

		/// <summary>
		/// Typesafe, deep-copy clone method.
		/// </summary>
		/// <returns>A new, independent copy of this class</returns>
		public MinorTic Clone()
		{
			return new MinorTic( this );
		}

	#endregion

	#region Properties

		/// <summary>
		/// The color to use for drawing the tics of this class instance
		/// </summary>
		/// <value> The color is defined using the
		/// <see cref="System.Drawing.Color"/> class</value>
		/// <seealso cref="Default.Color"/>.
		/// <seealso cref="IsOutside"/>
		/// <seealso cref="Axis.IsVisible"/>
		public Color Color
		{
			get { return _color; }
			set { _color = value; }
		}

		/// <summary>
		/// The length of the major tic marks.
		/// </summary>
		/// <remarks>
		/// This length will be scaled
		/// according to the <see cref="PaneBase.CalcScaleFactor"/> for the
		/// <see cref="GraphPane"/>
		/// </remarks>
		/// <value>The tic size is measured in points (1/72 inch)</value>
		/// <seealso cref="Default.Size"/>.
		/// <seealso cref="IsOutside"/>
		/// <seealso cref="Axis.IsVisible"/>
		/// <seealso cref="Color"/>
		public float Size
		{
			get { return _size; }
			set { _size = value; }
		}
		/// <summary>
		/// Calculate the scaled tic size for this <see cref="Axis"/>
		/// </summary>
		/// <param name="scaleFactor">
		/// The scaling factor to be used for rendering objects.  This is calculated and
		/// passed down by the parent <see cref="GraphPane"/> object using the
		/// <see cref="PaneBase.CalcScaleFactor"/> method, and is used to proportionally adjust
		/// font sizes, etc. according to the actual size of the graph.
		/// </param>
		/// <returns>The scaled tic size, in points (1/72 inch)</returns>
		/// <seealso cref="Size"/>
		/// <seealso cref="Scale.FontSpec"/>
		/// <seealso cref="PaneBase.CalcScaleFactor"/>
		public float ScaledTic( float scaleFactor )
		{
			return (float)( _size * scaleFactor );
		}

		/// <summary>
		/// This is convenience property sets the status of all the different
		/// tic properties in this instance to the same value.  true to activate all tics,
		/// false to clear all tics.
		/// </summary>
		/// <remarks>
		/// This setting does not persist.  That is, you can clear all the tics with
		/// <see cref="IsAllTics" /> = false, then activate them individually (example:
		/// <see cref="IsOutside" /> = true).
		/// </remarks>
		/// <seealso cref="IsOutside"/>
		/// <seealso cref="IsInside"/>
		/// <seealso cref="IsOpposite"/>
		/// <seealso cref="IsCrossInside"/>
		/// <seealso cref="IsCrossOutside"/>
		public bool IsAllTics
		{
			set
			{
				this.IsOutside = value;
				this.IsInside = value;
				this.IsOpposite = value;
				_isCrossOutside = value;
				_isCrossInside = value;
			}
		}

		/// <summary>
		/// Gets or sets a property that determines whether or not the minor outside tic marks
		/// are shown.
		/// </summary>
		/// <remarks>
		/// These are the tic marks on the outside of the <see cref="Axis"/> border.
		/// The minor tic spacing is controlled by <see cref="Scale.MinorStep"/>.
		/// </remarks>
		/// <value>true to show the minor outside tic marks, false otherwise</value>
		/// <seealso cref="Default.IsOutside"/>.
		/// <seealso cref="IsOutside"/>
		/// <seealso cref="IsInside"/>
		/// <seealso cref="IsOpposite"/>
		/// <seealso cref="IsCrossInside"/>
		/// <seealso cref="IsCrossOutside"/>
		public bool IsOutside
		{
			get { return _isOutside; }
			set { _isOutside = value; }
		}

		/// <summary>
		/// Gets or sets a property that determines whether or not the major inside tic marks
		/// are shown.
		/// </summary>
		/// <remarks>
		/// These are the tic marks on the inside of the <see cref="Axis"/> border.
		/// The major tic spacing is controlled by <see cref="Scale.MajorStep"/>.
		/// </remarks>
		/// <value>true to show the major inside tic marks, false otherwise</value>
		/// <seealso cref="Default.IsInside"/>.
		/// <seealso cref="IsOutside"/>
		/// <seealso cref="IsInside"/>
		/// <seealso cref="IsOpposite"/>
		/// <seealso cref="IsCrossInside"/>
		/// <seealso cref="IsCrossOutside"/>
		public bool IsInside
		{
			get { return _isInside; }
			set { _isInside = value; }
		}

		/// <summary>
		/// Gets or sets a property that determines whether or not the major opposite tic marks
		/// are shown.
		/// </summary>
		/// <remarks>
		/// These are the tic marks on the inside of the <see cref="Axis"/> border on
		/// the opposite side from the axis.
		/// The major tic spacing is controlled by <see cref="Scale.MajorStep"/>.
		/// </remarks>
		/// <value>true to show the major opposite tic marks, false otherwise</value>
		/// <seealso cref="Default.IsOpposite"/>.
		/// <seealso cref="IsOutside"/>
		/// <seealso cref="IsInside"/>
		/// <seealso cref="IsOpposite"/>
		/// <seealso cref="IsCrossInside"/>
		/// <seealso cref="IsCrossOutside"/>
		public bool IsOpposite
		{
			get { return _isOpposite; }
			set { _isOpposite = value; }
		}

		/// <summary>
		/// Gets or sets the display mode for the <see cref="Axis"/> major outside 
		/// "cross" tic marks.
		/// </summary>
		/// <remarks>
		/// The "cross" tics are a special, additional set of tic marks that
		/// always appear on the actual axis, even if it has been shifted due
		/// to the <see cref="Axis.Cross" /> setting.  The other tic marks are always
		/// fixed to the edges of the <see cref="Chart.Rect"/>.  The cross tics
		/// are normally not displayed, since, if <see cref="Axis.CrossAuto" /> is true,
		/// they will exactly overlay the "normal" and "inside" tics.  If
		/// <see cref="Axis.CrossAuto"/> is false, then you will most likely want to
		/// enable the cross tics.
		/// The major tic spacing is controlled by <see cref="Scale.MajorStep"/>.
		/// </remarks>
		/// <value>true to show the major cross tic marks, false otherwise</value>
		public bool IsCrossOutside
		{
			get { return _isCrossOutside; }
			set { _isCrossOutside = value; }
		}
		/// <summary>
		/// Gets or sets the display mode for the <see cref="Axis"/> major inside 
		/// "cross" tic marks.
		/// </summary>
		/// <remarks>
		/// The "cross" tics are a special, additional set of tic marks that
		/// always appear on the actual axis, even if it has been shifted due
		/// to the <see cref="Axis.Cross" /> setting.  The other tic marks are always
		/// fixed to the edges of the <see cref="Chart.Rect"/>.  The cross tics
		/// are normally not displayed, since, if <see cref="Axis.CrossAuto" /> is true,
		/// they will exactly overlay the "normal" and "inside" tics.  If
		/// <see cref="Axis.CrossAuto"/> is false, then you will most likely want to
		/// enable the cross tics.
		/// The major tic spacing is controlled by <see cref="Scale.MajorStep"/>.
		/// </remarks>
		/// <value>true to show the major cross tic marks, false otherwise</value>
		public bool IsCrossInside
		{
			get { return _isCrossInside; }
			set { _isCrossInside = value; }
		}

		/// <summary>
		/// Gets or sets the pen width to be used when drawing the tic marks for
		/// this <see cref="Axis"/>
		/// </summary>
		/// <value>The pen width is defined in points (1/72 inch)</value>
		/// <seealso cref="Default.PenWidth"/>.
		/// <seealso cref="IsOutside"/>
		/// <seealso cref="Color"/>
		public float PenWidth
		{
			get { return _penWidth; }
			set { _penWidth = value; }
		}

	#endregion

	#region Serialization

		/// <summary>
		/// Current schema value that defines the version of the serialized file
		/// </summary>
		public const int schema = 10;

		/// <summary>
		/// Constructor for deserializing objects
		/// </summary>
		/// <param name="info">A <see cref="SerializationInfo"/> instance that defines the serialized data
		/// </param>
		/// <param name="context">A <see cref="StreamingContext"/> instance that contains the serialized data
		/// </param>
		protected MinorTic( SerializationInfo info, StreamingContext context )
		{
			// The schema value is just a file version parameter.  You can use it to make future versions
			// backwards compatible as new member variables are added to classes
			int sch = info.GetInt32( "schema" );

			_color = (Color) info.GetValue( "color", typeof( Color ) );
			_size = info.GetSingle( "size" );
			_penWidth = info.GetSingle( "penWidth" );

			IsOutside = info.GetBoolean( "IsOutside" );
			IsInside = info.GetBoolean( "IsInside" );
			IsOpposite = info.GetBoolean( "IsOpposite" );
			_isCrossOutside = info.GetBoolean( "isCrossOutside" );
			_isCrossInside = info.GetBoolean( "isCrossInside" );
		}

		/// <summary>
		/// Populates a <see cref="SerializationInfo"/> instance with the data needed to serialize the target object
		/// </summary>
		/// <param name="info">A <see cref="SerializationInfo"/> instance that defines the serialized data</param>
		/// <param name="context">A <see cref="StreamingContext"/> instance that contains the serialized data</param>
		[SecurityPermissionAttribute( SecurityAction.Demand, SerializationFormatter = true )]
		public virtual void GetObjectData( SerializationInfo info, StreamingContext context )
		{
			info.AddValue( "schema", schema );

			info.AddValue( "color", _color );
			info.AddValue( "size", _size );
			info.AddValue( "penWidth", _penWidth );

			info.AddValue( "IsOutside", IsOutside );
			info.AddValue( "IsInside", IsInside );
			info.AddValue( "IsOpposite", IsOpposite );
			info.AddValue( "isCrossOutside", _isCrossOutside );
			info.AddValue( "isCrossInside", _isCrossInside );

		}

	#endregion

	#region Defaults

		/// <summary>
		/// A simple struct that defines the
		/// default property values for the <see cref="MinorTic"/> class.
		/// </summary>
		public struct Default
		{
			/// <summary>
			/// The default size for the <see cref="Axis"/> minor tic marks.
			/// (<see cref="MinorTic.Size"/> property). Units are in points (1/72 inch).
			/// </summary>
			public static float Size = 2.5F;
			/// <summary>
			/// The default pen width for drawing the <see cref="Axis"/> tic marks.
			/// (<see cref="MinorTic.PenWidth"/> property). Units are in points (1/72 inch).
			/// </summary>
			public static float PenWidth = 1.0F;
			/// <summary>
			/// The display mode for the <see cref="Axis"/> minor outside tic marks
			/// (<see cref="MinorTic.IsOutside"/> property).
			/// The minor tic spacing is controlled by <see cref="Scale.MinorStep"/>.
			/// </summary>
			/// <value>true to show the minor tic marks (outside the axis),
			/// false otherwise</value>
			public static bool IsOutside = true;
			/// <summary>
			/// The display mode for the <see cref="Axis"/> minor inside tic marks
			/// (<see cref="MinorTic.IsInside"/> property).
			/// The minor tic spacing is controlled by <see cref="Scale.MinorStep"/>.
			/// </summary>
			/// <value>true to show the minor tic marks (inside the axis),
			/// false otherwise</value>
			public static bool IsInside = true;
			/// <summary>
			/// The display mode for the <see cref="Axis"/> minor opposite tic marks
			/// (<see cref="MinorTic.IsOpposite"/> property).
			/// The minor tic spacing is controlled by <see cref="Scale.MinorStep"/>.
			/// </summary>
			/// <value>true to show the minor tic marks
			/// (inside the axis on the opposite side),
			/// false otherwise</value>
			public static bool IsOpposite = true;

			/// <summary>
			/// The default display mode for the <see cref="Axis"/> minor outside 
			/// "cross" tic marks (<see cref="MinorTic.IsCrossOutside"/> property).
			/// </summary>
			/// <remarks>
			/// The "cross" tics are a special, additional set of tic marks that
			/// always appear on the actual axis, even if it has been shifted due
			/// to the <see cref="Axis.Cross" /> setting.  The other tic marks are always
			/// fixed to the edges of the <see cref="Chart.Rect"/>.  The cross tics
			/// are normally not displayed, since, if <see cref="Axis.CrossAuto" /> is true,
			/// they will exactly overlay the "normal" and "inside" tics.  If
			/// <see cref="Axis.CrossAuto"/> is false, then you will most likely want to
			/// enable the cross tics.
			/// The minor tic spacing is controlled by <see cref="Scale.MinorStep"/>.
			/// </remarks>
			/// <value>true to show the major cross tic marks, false otherwise</value>
			public static bool IsCrossOutside = false;
			/// <summary>
			/// The default display mode for the <see cref="Axis"/> minor inside 
			/// "cross" tic marks (<see cref="MinorTic.IsCrossInside"/> property).
			/// </summary>
			/// <remarks>
			/// The "cross" tics are a special, additional set of tic marks that
			/// always appear on the actual axis, even if it has been shifted due
			/// to the <see cref="Axis.Cross" /> setting.  The other tic marks are always
			/// fixed to the edges of the <see cref="Chart.Rect"/>.  The cross tics
			/// are normally not displayed, since, if <see cref="Axis.CrossAuto" /> is true,
			/// they will exactly overlay the "normal" and "inside" tics.  If
			/// <see cref="Axis.CrossAuto"/> is false, then you will most likely want to
			/// enable the cross tics.
			/// The major tic spacing is controlled by <see cref="Scale.MinorStep"/>.
			/// </remarks>
			/// <value>true to show the major cross tic marks, false otherwise</value>
			public static bool IsCrossInside = false;

			/// <summary>
			/// The default color for minor tics (<see cref="MinorTic.Color"/> property).
			/// </summary>
			public static Color Color = Color.Black;
		}

	#endregion

	#region Methods

		/// <summary>
		/// Draw a tic mark at the specified single position.  This includes the inner, outer,
		/// cross and opposite tic marks as required.
		/// </summary>
		/// <param name="g">
		/// A graphic device object to be drawn into.  This is normally e.Graphics from the
		/// PaintEventArgs argument to the Paint() method.
		/// </param>
		/// <param name="pane">
		/// A reference to the <see cref="GraphPane"/> object that is the parent or
		/// owner of this object.
		/// </param>
		/// <param name="pen">Graphic <see cref="Pen"/> with which to draw the tic mark.</param>
		/// <param name="pixVal">The pixel location of the tic mark on this
		/// <see cref="Axis"/></param>
		/// <param name="topPix">The pixel value of the top of the axis border</param>
		/// <param name="shift">The number of pixels to shift this axis, based on the
		/// value of <see cref="Axis.Cross"/>.  A positive value is into the ChartRect relative to
		/// the default axis position.</param>
		/// <param name="scaledTic">The scaled size of a minor tic, in pixel units</param>
		internal void Draw( Graphics g, GraphPane pane, Pen pen, float pixVal, float topPix,
					float shift, float scaledTic )
		{
			// draw the outside tic
			if ( this.IsOutside )
				g.DrawLine( pen, pixVal, shift, pixVal, shift + scaledTic );

			// draw the cross tic
			if ( _isCrossOutside )
				g.DrawLine( pen, pixVal, 0.0f, pixVal, scaledTic );

			// draw the inside tic
			if ( this.IsInside )
				g.DrawLine( pen, pixVal, shift, pixVal, shift - scaledTic );

			// draw the inside cross tic
			if ( _isCrossInside )
				g.DrawLine( pen, pixVal, 0.0f, pixVal, -scaledTic );

			// draw the opposite tic
			if ( this.IsOpposite )
				g.DrawLine( pen, pixVal, topPix, pixVal, topPix + scaledTic );
		}

		internal Pen GetPen( GraphPane pane, float scaleFactor )
		{
			return new Pen( _color, pane.ScaledPenWidth( _penWidth, scaleFactor ) );
		}

	#endregion

	}
}

By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here


Written By
Engineer
United States United States
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.

Comments and Discussions