//============================================================================
//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
//=============================================================================

#region Using directives

using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Text;
using System.Runtime.Serialization;
using System.Security.Permissions;

#endregion

namespace DrawGraph
{
	/// <summary>
	/// This class handles the drawing of the curve <see cref="JapaneseCandleStick"/> objects.
	/// </summary>
	/// 
	/// <author> John Champion </author>
	/// <version> $Revision: 3.10 $ $Date: 2007/04/16 00:03:02 $ </version>
	[Serializable]
	public class JapaneseCandleStick : OHLCBar, ICloneable, ISerializable
	{
	#region Fields

		/// <summary>
		/// Private field to store the <see cref="Fill" /> class to be used for filling the
		/// candlestick "bars" when the <see cref="StockPt.Close" /> value is greater than
		/// the <see cref="StockPt.Open" /> value.  See the public property
		/// <see cref="RisingFill" /> to access this value.
		/// </summary>
		private Fill _risingFill;
		/// <summary>
		/// Private field to store the <see cref="Fill" /> class to be used for filling the
		/// candlestick "bars" when the <see cref="StockPt.Close" /> value is less than
		/// the <see cref="StockPt.Open" /> value.  See the public property
		/// <see cref="FallingFill" /> to access this value.
		/// </summary>
		private Fill _fallingFill;

		/// <summary>
		/// Private field to store the <see cref="Border" /> class to be used for drawing the
		/// candlestick "bars" when the <see cref="StockPt.Close" /> value is greater than
		/// the <see cref="StockPt.Open" /> value.  See the public property
		/// <see cref="RisingBorder" /> to access this value.
		/// </summary>
		private Border _risingBorder;
		/// <summary>
		/// Private field to store the <see cref="Border" /> class to be used for drawing the
		/// candlestick "bars" when the <see cref="StockPt.Close" /> value is less than
		/// the <see cref="StockPt.Open" /> value.  See the public property
		/// <see cref="FallingBorder" /> to access this value.
		/// </summary>
		private Border _fallingBorder;

		/// <summary>
		/// Private field that stores the CandleStick color when the <see cref="StockPt.Close" /> 
		/// value is less than the <see cref="StockPt.Open" /> value.  Use the public
		/// property <see cref="FallingColor"/> to access this value.
		/// </summary>
		protected Color _fallingColor;
	#endregion

	#region Defaults

		/// <summary>
		/// A simple struct that defines the
		/// default property values for the <see cref="ZedGraph.JapaneseCandleStick"/> class.
		/// </summary>
		public new struct Default
		{
			/// <summary>
			/// The default fillcolor for drawing the rising case CandleSticks
			/// (<see cref="JapaneseCandleStick.RisingFill"/> property).
			/// </summary>
			public static Color RisingColor = Color.White;
			/// <summary>
			/// The default fillcolor for drawing the falling case CandleSticks
			/// (<see cref="JapaneseCandleStick.FallingFill"/> property).
			/// </summary>
			public static Color FallingColor = Color.Black;

			/// <summary>
			/// The default color for the border of the rising CandleSticks
			/// (<see cref="JapaneseCandleStick.RisingBorder" /> property).
			/// </summary>
			public static Color RisingBorder = Color.Black;
			/// <summary>
			/// The default color for the border of the falling CandleSticks
			/// (<see cref="JapaneseCandleStick.FallingBorder" /> property).
			/// </summary>
			public static Color FallingBorder = Color.Black;
		}

	#endregion

	#region Properties

		/// <summary>
		/// Gets or sets the <see cref="Fill" /> class that is used to fill the candlestick
		/// "bars" when the <see cref="StockPt.Close" /> value is greater than the
		/// <see cref="StockPt.Open" /> value.
		/// </summary>
		public Fill RisingFill
		{
			get { return _risingFill; }
			set { _risingFill = value; }
		}
		/// <summary>
		/// Gets or sets the <see cref="Fill" /> class that is used to fill the candlestick
		/// "bars" when the <see cref="StockPt.Close" /> value is less than the
		/// <see cref="StockPt.Open" /> value.
		/// </summary>
		public Fill FallingFill
		{
			get { return _fallingFill; }
			set { _fallingFill = value; }
		}

		/// <summary>
		/// The <see cref="Border" /> instance to be used for drawing the border frame of
		/// the candlestick "bars" when the <see cref="StockPt.Close" /> value is greater than the
		/// <see cref="StockPt.Open" /> value.
		/// </summary>
		public Border RisingBorder
		{
			get { return _risingBorder; }
			set { _risingBorder = value; }
		}
		/// <summary>
		/// The <see cref="Border" /> instance to be used for drawing the border frame of
		/// the candlestick "bars" when the <see cref="StockPt.Close" /> value is less than the
		/// <see cref="StockPt.Open" /> value.
		/// </summary>
		public Border FallingBorder
		{
			get { return _fallingBorder; }
			set { _fallingBorder = value; }
		}

		/// <summary>
		/// Gets or sets the <see cref="System.Drawing.Color"/> data for this
		/// <see cref="JapaneseCandleStick"/> when the value of the candlestick is
		/// falling.
		/// </summary>
		/// <remarks>This property only controls the color of
		/// the vertical line when the value is falling.  The rising color is controlled
		/// by the <see cref="LineBase.Color" /> property.
		/// </remarks>
		public Color FallingColor
		{
			get { return _fallingColor; }
			set { _fallingColor = value; }
		}

	#endregion

	#region Constructors

		/// <summary>
		/// Default constructor that sets all <see cref="JapaneseCandleStick"/> properties to
		/// default values as defined in the <see cref="Default"/> class.
		/// </summary>
		public JapaneseCandleStick() : base()
		{
			_risingFill = new Fill( Default.RisingColor );
			_fallingFill = new Fill( Default.FallingColor );

			_risingBorder = new Border( Default.RisingBorder, LineBase.Default.Width );
			_fallingBorder = new Border( Default.FallingBorder, LineBase.Default.Width );

			_fallingColor = Default.FallingColor;
		}

		/// <summary>
		/// The Copy Constructor
		/// </summary>
		/// <param name="rhs">The <see cref="JapaneseCandleStick"/> object from which to copy</param>
		public JapaneseCandleStick( JapaneseCandleStick rhs ) : base( rhs )
		{
			_risingFill = rhs._risingFill.Clone();
			_fallingFill = rhs._fallingFill.Clone();

			_risingBorder = rhs._risingBorder.Clone();
			_fallingBorder = rhs._fallingBorder.Clone();

			_fallingColor = rhs._fallingColor;
		}

		/// <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 new JapaneseCandleStick Clone()
		{
			return new JapaneseCandleStick( this );
		}

	#endregion

	#region Serialization

		/// <summary>
		/// Current schema value that defines the version of the serialized file
		/// </summary>
		public const int schema2 = 11;

		/// <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 JapaneseCandleStick( SerializationInfo info, StreamingContext context ) :
			base( info, 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( "schema2" );

			_risingFill = (Fill)info.GetValue( "risingFill", typeof( Fill ) );
			_fallingFill = (Fill)info.GetValue( "fallingFill", typeof( Fill ) );
			_risingBorder = (Border)info.GetValue( "risingBorder", typeof( Border ) );
			_fallingBorder = (Border)info.GetValue( "fallingBorder", typeof( Border ) );

			if ( schema2 >= 11 )
				_fallingColor = (Color) info.GetValue( "fallingColor", typeof( Color ) );
		}
		/// <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 override void GetObjectData( SerializationInfo info, StreamingContext context )
		{
			base.GetObjectData( info, context );

			info.AddValue( "schema2", schema2 );
			info.AddValue( "risingFill", _risingFill );
			info.AddValue( "fallingFill", _fallingFill );
			info.AddValue( "risingBorder", _risingBorder );
			info.AddValue( "fallingBorder", _fallingBorder );
			info.AddValue( "fallingColor", _fallingColor );
		}

	#endregion

	#region Rendering Methods

		/// <summary>
		/// Draw the <see cref="JapaneseCandleStick"/> to the specified <see cref="Graphics"/>
		/// device at the specified location.
		/// </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="isXBase">boolean value that indicates if the "base" axis for this
		/// <see cref="JapaneseCandleStick"/> is the X axis.  True for an <see cref="XAxis"/> base,
		/// false for a <see cref="YAxis"/> or <see cref="Y2Axis"/> base.</param>
		/// <param name="pixBase">The independent axis position of the center of the candlestick in
		/// pixel units</param>
		/// <param name="pixHigh">The high value position of the candlestick in
		/// pixel units</param>
		/// <param name="pixLow">The low value position of the candlestick in
		/// pixel units</param>
		/// <param name="pixOpen">The opening value position of the candlestick in
		/// pixel units</param>
		/// <param name="pixClose">The closing value position of the candlestick in
		/// pixel units</param>
		/// <param name="halfSize">The scaled width of one-half of a bar, in pixels</param>
		/// <param name="scaleFactor">
		/// The scaling factor for the features of the graph based on the <see cref="PaneBase.BaseDimension"/>.  This
		/// scaling factor is calculated by the <see cref="PaneBase.CalcScaleFactor"/> method.  The scale factor
		/// represents a linear multiple to be applied to font sizes, symbol sizes, etc.</param>
		/// <param name="pen">A pen with the <see cref="Color"/> attribute for this
		/// <see cref="JapaneseCandleStick"/></param>
		/// <param name="fill">
		/// The <see cref="Fill" /> instance to be used for filling this
		/// <see cref="JapaneseCandleStick" />
		/// </param>
		/// <param name="border">The <see cref="Border" /> instance to be used for drawing the
		/// border around the <see cref="JapaneseCandleStick" /> filled box</param>
		/// <param name="pt">The <see cref="PointPair" /> to be used for determining the
		/// <see cref="Fill" />, just in case it's a <see cref="FillType.GradientByX" />,
		/// <see cref="FillType.GradientByY" />, or
		/// <see cref="FillType.GradientByZ" /> <see cref="FillType" /></param>
		public void Draw( Graphics g, GraphPane pane, bool isXBase,
								float pixBase, float pixHigh, float pixLow,
								float pixOpen, float pixClose, float halfSize,
								float scaleFactor, Pen pen, Fill fill, Border border, PointPair pt )
		{
			//float halfSize = (int) ( _size * scaleFactor / 2.0f + 0.5f );

			if ( pixBase != PointPair.Missing && Math.Abs( pixLow ) < 1000000 &&
						Math.Abs( pixHigh ) < 1000000)
			{
				RectangleF rect;
				if ( isXBase )
				{
					rect = new RectangleF( pixBase - halfSize, Math.Min( pixOpen, pixClose ),
								halfSize * 2.0f, Math.Abs( pixOpen - pixClose ) );

					g.DrawLine( pen, pixBase, pixHigh, pixBase, pixLow );
				}
				else
				{
					rect = new RectangleF( Math.Min( pixOpen, pixClose ), pixBase - halfSize,
								Math.Abs( pixOpen - pixClose ), halfSize * 2.0f );

					g.DrawLine( pen, pixHigh, pixBase, pixLow, pixBase );
				}

				if ( _isOpenCloseVisible && Math.Abs( pixOpen ) < 1000000 &&
							Math.Abs( pixClose ) < 1000000 )
				{
					if ( rect.Width == 0 )
						rect.Width = 1;
					if ( rect.Height == 0 )
						rect.Height = 1;

					fill.Draw( g, rect, pt );
					border.Draw( g, pane, scaleFactor, rect );
				}
			}
		}


		/// <summary>
		/// Draw all the <see cref="JapaneseCandleStick"/>'s to the specified <see cref="Graphics"/>
		/// device as a candlestick at each defined point.
		/// </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="curve">A <see cref="JapaneseCandleStickItem"/> object representing the
		/// <see cref="JapaneseCandleStick"/>'s to be drawn.</param>
		/// <param name="baseAxis">The <see cref="Axis"/> class instance that defines the base (independent)
		/// axis for the <see cref="JapaneseCandleStick"/></param>
		/// <param name="valueAxis">The <see cref="Axis"/> class instance that defines the value (dependent)
		/// axis for the <see cref="JapaneseCandleStick"/></param>
		/// <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>
		public void Draw( Graphics g, GraphPane pane, JapaneseCandleStickItem curve,
							Axis baseAxis, Axis valueAxis, float scaleFactor )
		{
			//ValueHandler valueHandler = new ValueHandler( pane, false );

			float pixBase, pixHigh, pixLow, pixOpen, pixClose;

			if ( curve.Points != null )
			{
				//float halfSize = _size * scaleFactor;
				float halfSize = GetBarWidth( pane, baseAxis, scaleFactor );

				Color tColor = _color;
				Color tFallingColor = _fallingColor;
				float tPenWidth = _width;
				Fill tRisingFill = _risingFill;
				Fill tFallingFill = _fallingFill;
				Border tRisingBorder = _risingBorder;
				Border tFallingBorder = _fallingBorder;
				if ( curve.IsSelected )
				{
					tColor = Selection.Border.Color;
					tFallingColor = Selection.Border.Color;
					tPenWidth = Selection.Border.Width;
					tRisingFill = Selection.Fill;
					tFallingFill = Selection.Fill;
					tRisingBorder = Selection.Border;
					tFallingBorder = Selection.Border;

				}

				using ( Pen risingPen = new Pen(  tColor, tPenWidth ) )
				using ( Pen fallingPen = new Pen( tFallingColor, tPenWidth ) )
				{
					// Loop over each defined point							
					for ( int i = 0; i < curve.Points.Count; i++ )
					{
						PointPair pt = curve.Points[i];
						double date = pt.X;
						double high = pt.Y;
						double low = pt.Z;
						double open = PointPair.Missing;
						double close = PointPair.Missing;
						if ( pt is StockPt )
						{
							open = ( pt as StockPt ).Open;
							close = ( pt as StockPt ).Close;
						}

						// Any value set to double max is invalid and should be skipped
						// This is used for calculated values that are out of range, divide
						//   by zero, etc.
						// Also, any value <= zero on a log scale is invalid

						if ( !curve.Points[i].IsInvalid3D &&
								( date > 0 || !baseAxis._scale.IsLog ) &&
								( ( high > 0 && low > 0 ) || !valueAxis._scale.IsLog ) )
						{
							pixBase = (int) ( baseAxis.Scale.Transform( curve.IsOverrideOrdinal, i, date ) + 0.5 );
							//pixBase = baseAxis.Scale.Transform( curve.IsOverrideOrdinal, i, date );
							pixHigh = valueAxis.Scale.Transform( curve.IsOverrideOrdinal, i, high );
							pixLow = valueAxis.Scale.Transform( curve.IsOverrideOrdinal, i, low );
							if ( PointPair.IsValueInvalid( open ) )
								pixOpen = Single.MaxValue;
							else
								pixOpen = valueAxis.Scale.Transform( curve.IsOverrideOrdinal, i, open );

							if ( PointPair.IsValueInvalid( close ) )
								pixClose = Single.MaxValue;
							else
								pixClose = valueAxis.Scale.Transform( curve.IsOverrideOrdinal, i, close );

							if ( !curve.IsSelected && this._gradientFill.IsGradientValueType )
							{
								using ( Pen tPen = GetPen( pane, scaleFactor, pt ) )
									Draw( g, pane, baseAxis is XAxis || baseAxis is X2Axis,
										pixBase, pixHigh, pixLow, pixOpen,
										pixClose, halfSize, scaleFactor,
										( tPen ),
										( close > open ? tRisingFill : tFallingFill ),
										( close > open ? tRisingBorder : tFallingBorder ), pt );
							}
							else
								Draw( g, pane, baseAxis is XAxis || baseAxis is X2Axis,
									pixBase, pixHigh, pixLow, pixOpen,
									pixClose, halfSize, scaleFactor,
									( close > open ? risingPen : fallingPen ),
									( close > open ? tRisingFill : tFallingFill ),
									( close > open ? tRisingBorder : tFallingBorder ), pt );
						}
					}
				}
			}
		}

		#endregion

	}
}