256 lines
8.8 KiB
C#
256 lines
8.8 KiB
C#
//============================================================================
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//ZedGraph Class Library - A Flexible Line Graph/Bar Graph Library in C#
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//Copyright ?2004 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.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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/// <see cref="XAxis"/> inherits from <see cref="Axis"/>, and defines the
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/// special characteristics of a horizontal axis, specifically located at
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/// the bottom of the <see cref="Chart.Rect"/> of the <see cref="GraphPane"/>
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/// object
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/// </summary>
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///
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/// <author> John Champion </author>
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/// <version> $Revision: 3.16 $ $Date: 2007/04/16 00:03:02 $ </version>
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[Serializable]
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public class XAxis : Axis, ICloneable, ISerializable
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{
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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="XAxis"/> class.
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/// </summary>
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public new struct Default
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{
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// Default X Axis properties
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/// <summary>
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/// The default display mode for the <see cref="XAxis"/>
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/// (<see cref="Axis.IsVisible"/> property). true to display the scale
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/// values, title, tic marks, false to hide the axis entirely.
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/// </summary>
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public static bool IsVisible = true;
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/// <summary>
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/// Determines if a line will be drawn at the zero value for the
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/// <see cref="XAxis"/>, that is, a line that
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/// divides the negative values from positive values.
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/// <seealso cref="MajorGrid.IsZeroLine"/>.
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/// </summary>
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public static bool IsZeroLine = false;
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}
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#endregion
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#region Constructors
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/// <summary>
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/// Default constructor that sets all <see cref="XAxis"/> properties to
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/// default values as defined in the <see cref="Default"/> class
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/// </summary>
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public XAxis()
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: this( "X Axis" )
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{
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}
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/// <summary>
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/// Default constructor that sets all <see cref="XAxis"/> properties to
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/// default values as defined in the <see cref="Default"/> class, except
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/// for the axis title
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/// </summary>
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/// <param name="title">The <see cref="Axis.Title"/> for this axis</param>
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public XAxis( string title )
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: base( title )
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{
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_isVisible = Default.IsVisible;
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_majorGrid._isZeroLine = Default.IsZeroLine;
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_scale._fontSpec.Angle = 0F;
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}
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/// <summary>
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/// The Copy Constructor
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/// </summary>
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/// <param name="rhs">The XAxis object from which to copy</param>
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public XAxis( XAxis rhs )
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: base( rhs )
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{
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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 XAxis Clone()
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{
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return new XAxis( this );
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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 schema2 = 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 XAxis( SerializationInfo info, StreamingContext context )
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: base( info, 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( "schema2" );
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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 override void GetObjectData( SerializationInfo info, StreamingContext context )
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{
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base.GetObjectData( info, context );
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info.AddValue( "schema2", schema2 );
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}
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#endregion
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#region Methods
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/// <summary>
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/// Setup the Transform Matrix to handle drawing of this <see cref="XAxis"/>
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/// </summary>
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/// <param name="g">
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/// A graphic device object to be drawn into. This is normally e.Graphics from the
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/// PaintEventArgs argument to the Paint() method.
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/// </param>
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/// <param name="pane">
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/// A reference to the <see cref="GraphPane"/> object that is the parent or
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/// owner of this object.
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/// </param>
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/// <param name="scaleFactor">
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/// The scaling factor to be used for rendering objects. This is calculated and
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/// passed down by the parent <see cref="GraphPane"/> object using the
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/// <see cref="PaneBase.CalcScaleFactor"/> method, and is used to proportionally adjust
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/// font sizes, etc. according to the actual size of the graph.
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/// </param>
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override public void SetTransformMatrix( Graphics g, GraphPane pane, float scaleFactor )
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{
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// Move the origin to the BottomLeft of the ChartRect, which is the left
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// side of the X axis (facing from the label side)
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g.TranslateTransform( pane.Chart._rect.Left, pane.Chart._rect.Bottom );
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}
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/// <summary>
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/// Determines if this <see cref="Axis" /> object is a "primary" one.
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/// </summary>
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/// <remarks>
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/// The primary axes are the <see cref="XAxis" /> (always), the first
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/// <see cref="YAxis" /> in the <see cref="GraphPane.YAxisList" />
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/// (<see cref="CurveItem.YAxisIndex" /> = 0), and the first
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/// <see cref="Y2Axis" /> in the <see cref="GraphPane.Y2AxisList" />
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/// (<see cref="CurveItem.YAxisIndex" /> = 0). Note that
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/// <see cref="GraphPane.YAxis" /> and <see cref="GraphPane.Y2Axis" />
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/// always reference the primary axes.
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/// </remarks>
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/// <param name="pane">
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/// A reference to the <see cref="GraphPane"/> object that is the parent or
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/// owner of this object.
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/// </param>
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/// <returns>true for a primary <see cref="Axis" /> (for the <see cref="XAxis" />,
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/// this is always true), false otherwise</returns>
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override internal bool IsPrimary( GraphPane pane )
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{
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return this == pane.XAxis;
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}
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/// <summary>
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/// Calculate the "shift" size, in pixels, in order to shift the axis from its default
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/// location to the value specified by <see cref="Axis.Cross"/>.
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/// </summary>
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/// <param name="pane">
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/// A reference to the <see cref="GraphPane"/> object that is the parent or
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/// owner of this object.
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/// </param>
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/// <returns>The shift amount measured in pixels</returns>
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internal override float CalcCrossShift( GraphPane pane )
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{
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double effCross = EffectiveCrossValue( pane );
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if ( !_crossAuto )
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return pane.YAxis.Scale.Transform( effCross ) - pane.YAxis.Scale._maxPix;
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else
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return 0;
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}
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/*
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override internal bool IsCrossed( GraphPane pane )
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{
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return !this.crossAuto && this.cross > pane.YAxis.Min && this.cross < pane.YAxis.Max;
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}
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*/
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/// <summary>
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/// Gets the "Cross" axis that corresponds to this axis.
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/// </summary>
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/// <remarks>
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/// The cross axis is the axis which determines the of this Axis when the
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/// <see cref="Axis.Cross" >Axis.Cross</see> property is used. The
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/// cross axis for any <see cref="XAxis" /> or <see cref="X2Axis" />
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/// is always the primary <see cref="YAxis" />, and
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/// the cross axis for any <see cref="YAxis" /> or <see cref="Y2Axis" /> is
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/// always the primary <see cref="XAxis" />.
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/// </remarks>
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/// <param name="pane">
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/// A reference to the <see cref="GraphPane"/> object that is the parent or
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/// owner of this object.
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/// </param>
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override public Axis GetCrossAxis( GraphPane pane )
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{
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return pane.YAxis;
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}
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// override internal float GetMinPix( GraphPane pane )
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// {
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// return pane.Chart._rect.Left;
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// }
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#endregion
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}
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}
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