295 lines
8.6 KiB
C#
295 lines
8.6 KiB
C#
//============================================================================
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//ZedGraph Class Library - A Flexible Line Graph/Bar Graph Library in C#
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//Copyright ?2006 John Champion
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//
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//This library is free software; you can redistribute it and/or
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//modify it under the terms of the GNU Lesser General Public
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//License as published by the Free Software Foundation; either
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//version 2.1 of the License, or (at your option) any later version.
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//
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//This library is distributed in the hope that it will be useful,
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//but WITHOUT ANY WARRANTY; without even the implied warranty of
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//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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//Lesser General Public License for more details.
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//
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//You should have received a copy of the GNU Lesser General Public
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//License along with this library; if not, write to the Free Software
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//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//=============================================================================
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using System;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Text;
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using System.Runtime.Serialization;
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using System.Security.Permissions;
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namespace DrawGraph
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{
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/// <summary>
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/// Class that holds the specific properties for the minor grid.
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/// </summary>
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/// <author> John Champion </author>
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/// <version> $Revision: 3.1 $ $Date: 2006/06/24 20:26:44 $ </version>
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[Serializable]
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public class MinorGrid : ICloneable, ISerializable
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{
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internal bool _isVisible;
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internal float _dashOn,
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_dashOff,
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_penWidth;
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internal Color _color;
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#region Constructors
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/// <summary>
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/// Default constructor
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/// </summary>
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public MinorGrid()
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{
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_dashOn = Default.DashOn;
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_dashOff = Default.DashOff;
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_penWidth = Default.PenWidth;
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_isVisible = Default.IsVisible;
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_color = Default.Color;
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}
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/// <summary>
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/// Copy constructor
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/// </summary>
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/// <param name="rhs">The source <see cref="MinorGrid" /> to be copied.</param>
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public MinorGrid( MinorGrid rhs )
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{
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_dashOn = rhs._dashOn;
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_dashOff = rhs._dashOff;
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_penWidth = rhs._penWidth;
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_isVisible = rhs._isVisible;
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_color = rhs._color;
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}
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/// <summary>
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/// Implement the <see cref="ICloneable" /> interface in a typesafe manner by just
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/// calling the typed version of <see cref="Clone" />
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/// </summary>
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/// <returns>A deep copy of this object</returns>
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object ICloneable.Clone()
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{
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return this.Clone();
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}
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/// <summary>
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/// Typesafe, deep-copy clone method.
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/// </summary>
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/// <returns>A new, independent copy of this class</returns>
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public MinorGrid Clone()
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{
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return new MinorGrid( this );
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}
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#endregion
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#region Properties
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/// <summary>
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/// Gets or sets a value that determines if the major <see cref="Axis"/> gridlines
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/// (at each labeled value) will be visible
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/// </summary>
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/// <value>true to show the gridlines, false otherwise</value>
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/// <seealso cref="Default.IsVisible">Default.IsShowGrid</seealso>.
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/// <seealso cref="Color"/>
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/// <seealso cref="PenWidth"/>
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/// <seealso cref="DashOn"/>
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/// <seealso cref="DashOff"/>
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/// <seealso cref="IsVisible"/>
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public bool IsVisible
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{
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get { return _isVisible; }
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set { _isVisible = value; }
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}
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/// <summary>
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/// The "Dash On" mode for drawing the grid.
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/// </summary>
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/// <remarks>
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/// This is the distance,
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/// in points (1/72 inch), of the dash segments that make up the dashed grid lines.
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/// </remarks>
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/// <value>The dash on length is defined in points (1/72 inch)</value>
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/// <seealso cref="DashOff"/>
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/// <seealso cref="IsVisible"/>
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/// <seealso cref="Default.DashOn"/>.
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public float DashOn
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{
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get { return _dashOn; }
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set { _dashOn = value; }
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}
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/// <summary>
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/// The "Dash Off" mode for drawing the grid.
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/// </summary>
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/// <remarks>
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/// This is the distance,
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/// in points (1/72 inch), of the spaces between the dash segments that make up
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/// the dashed grid lines.
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/// </remarks>
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/// <value>The dash off length is defined in points (1/72 inch)</value>
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/// <seealso cref="DashOn"/>
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/// <seealso cref="IsVisible"/>
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/// <seealso cref="Default.DashOff"/>.
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public float DashOff
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{
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get { return _dashOff; }
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set { _dashOff = value; }
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}
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/// <summary>
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/// The pen width used for drawing the grid lines.
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/// </summary>
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/// <value>The grid pen width is defined in points (1/72 inch)</value>
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/// <seealso cref="IsVisible"/>
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/// <seealso cref="Default.PenWidth"/>.
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/// <seealso cref="Color"/>
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public float PenWidth
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{
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get { return _penWidth; }
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set { _penWidth = value; }
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}
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/// <summary>
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/// The color to use for drawing this <see cref="Axis"/> grid.
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/// </summary>
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/// <value> The color is defined using the
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/// <see cref="System.Drawing.Color"/> class</value>
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/// <seealso cref="Default.Color"/>.
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/// <seealso cref="PenWidth"/>
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public Color Color
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{
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get { return _color; }
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set { _color = value; }
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}
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#endregion
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#region Serialization
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/// <summary>
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/// Current schema value that defines the version of the serialized file
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/// </summary>
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public const int schema = 10;
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/// <summary>
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/// Constructor for deserializing objects
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/// </summary>
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/// <param name="info">A <see cref="SerializationInfo"/> instance that defines the serialized data
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/// </param>
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/// <param name="context">A <see cref="StreamingContext"/> instance that contains the serialized data
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/// </param>
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protected MinorGrid( SerializationInfo info, StreamingContext context )
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{
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// The schema value is just a file version parameter. You can use it to make future versions
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// backwards compatible as new member variables are added to classes
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int sch = info.GetInt32( "schema" );
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_isVisible = info.GetBoolean( "isVisible" );
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_dashOn = info.GetSingle( "dashOn" );
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_dashOff = info.GetSingle( "dashOff" );
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_penWidth = info.GetSingle( "penWidth" );
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_color = (Color)info.GetValue( "color", typeof( Color ) );
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}
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/// <summary>
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/// Populates a <see cref="SerializationInfo"/> instance with the data needed to serialize the target object
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/// </summary>
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/// <param name="info">A <see cref="SerializationInfo"/> instance that defines the serialized data</param>
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/// <param name="context">A <see cref="StreamingContext"/> instance that contains the serialized data</param>
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[SecurityPermissionAttribute( SecurityAction.Demand, SerializationFormatter = true )]
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public virtual void GetObjectData( SerializationInfo info, StreamingContext context )
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{
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info.AddValue( "schema", schema );
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info.AddValue( "isVisible", _isVisible );
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info.AddValue( "dashOn", _dashOn );
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info.AddValue( "dashOff", _dashOff );
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info.AddValue( "penWidth", _penWidth );
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info.AddValue( "color", _color );
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}
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#endregion
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#region Defaults
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/// <summary>
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/// A simple struct that defines the
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/// default property values for the <see cref="MinorGrid"/> class.
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/// </summary>
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public struct Default
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{
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/// <summary>
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/// The default "dash on" size for drawing the <see cref="Axis"/> minor grid
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/// (<see cref="MinorGrid.DashOn"/> property). Units are in points (1/72 inch).
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/// </summary>
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public static float DashOn = 1.0F;
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/// <summary>
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/// The default "dash off" size for drawing the <see cref="Axis"/> minor grid
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/// (<see cref="MinorGrid.DashOff"/> property). Units are in points (1/72 inch).
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/// </summary>
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public static float DashOff = 10.0F;
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/// <summary>
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/// The default pen width for drawing the <see cref="Axis"/> minor grid
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/// (<see cref="MinorGrid.PenWidth"/> property). Units are in points (1/72 inch).
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/// </summary>
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public static float PenWidth = 1.0F;
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/// <summary>
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/// The default color for the <see cref="Axis"/> minor grid lines
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/// (<see cref="MinorGrid.Color"/> property). This color only affects the
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/// minor grid lines.
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/// </summary>
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public static Color Color = Color.Gray;
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/// <summary>
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/// The default display mode for the <see cref="Axis"/> minor grid lines
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/// (<see cref="MinorGrid.IsVisible"/> property). true
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/// to show the minor grid lines, false to hide them.
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/// </summary>
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public static bool IsVisible = false;
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}
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#endregion
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#region Methods
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internal void Draw( Graphics g, Pen pen, float pixVal, float topPix )
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{
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// draw the minor grid
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if ( _isVisible )
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g.DrawLine( pen, pixVal, 0.0F, pixVal, topPix );
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}
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internal Pen GetPen( GraphPane pane, float scaleFactor )
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{
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Pen pen = new Pen( _color,
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pane.ScaledPenWidth( _penWidth, scaleFactor ) );
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if ( _dashOff > 1e-10 && _dashOn > 1e-10 )
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{
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pen.DashStyle = DashStyle.Custom;
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float[] pattern = new float[2];
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pattern[0] = _dashOn;
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pattern[1] = _dashOff;
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pen.DashPattern = pattern;
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}
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return pen;
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}
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#endregion
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}
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}
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