context: //
  // System.Drawing.RectangleF.cs
  //
  // Author:
  //   Mike Kestner (mkestner@speakeasy.net)
  //
  // Copyright (C) 2001 Mike Kestner
  // Copyright (C) 2004, 2007 Novell, Inc (http://www.novell.com)
  //
  // Permission is hereby granted, free of charge, to any person obtaining
  // a copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to
  // permit persons to whom the Software is furnished to do so, subject to
  // the following conditions:
  // 
  // The above copyright notice and this permission notice shall be
  // included in all copies or substantial portions of the Software.
  // 
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  //
  
  using System;
  using System.ComponentModel;
  
  namespace System.Drawing
  {
  	[Serializable]
  	public struct RectangleF
  	{
                  private float x, y, width, height;
  
  		/// <summary>
  		///	Empty Shared Field
  		/// </summary>
  		///
  		/// <remarks>
  		///	An uninitialized RectangleF Structure.
  		/// </remarks>
  		
  		public static readonly RectangleF Empty;
  
  #if TARGET_JVM
  		internal java.awt.geom.Rectangle2D NativeObject {
  			get {
  				return new java.awt.geom.Rectangle2D.Float(X,Y,Width,Height);
  			}
  		}
  #endif
  
  		/// <summary>
  		///	FromLTRB Shared Method
  		/// </summary>
  		///
  		/// <remarks>
  		///	Produces a RectangleF structure from left, top, right,
  		///	and bottom coordinates.
  		/// </remarks>
  		
  		public static RectangleF FromLTRB (float left, float top,
  						   float right, float bottom)
  		{
  			return new RectangleF (left, top, right - left, bottom - top);
  		}
  
  		/// <summary>
  		///	Inflate Shared Method
  		/// </summary>
  		///
  		/// <remarks>
  		///	Produces a new RectangleF by inflating an existing 
  		///	RectangleF by the specified coordinate values.
  		/// </remarks>
  		
  		public static RectangleF Inflate (RectangleF rect, 
  						  float x, float y)
  		{
  			RectangleF ir = new RectangleF (rect.X, rect.Y, rect.Width, rect.Height);
  			ir.Inflate (x, y);
  			return ir;
  		}
  
  		/// <summary>
  		///	Inflate Method
  		/// </summary>
  		///
  		/// <remarks>
  		///	Inflates the RectangleF by a specified width and height.
  		/// </remarks>
  		
  		public void Inflate (float x, float y)
  		{
  			Inflate (new SizeF (x, y));
  		}
  
  		/// <summary>
  		///	Inflate Method
  		/// </summary>
  		///
  		/// <remarks>
  		///	Inflates the RectangleF by a specified Size.
  		/// </remarks>
  		
  		public void Inflate (SizeF size)
  		{
                          x -= size.Width;
                          y -= size.Height;
                          width += size.Width * 2;
                          height += size.Height * 2;                        
  		}
  
  		/// <summary>
  		///	Intersect Shared Method
  		/// </summary>
  		///
  		/// <remarks>
  		///	Produces a new RectangleF by intersecting 2 existing 
  		///	RectangleFs. Returns null if there is no intersection.
  		/// </remarks>
  		
  		public static RectangleF Intersect (RectangleF a, 
  						    RectangleF b)
  		{
  			// MS.NET returns a non-empty rectangle if the two rectangles
  			// touch each other
  			if (!a.IntersectsWithInclusive (b))
  				return Empty;
  
  			return FromLTRB (
  				Math.Max (a.Left, b.Left),
  				Math.Max (a.Top, b.Top),
  				Math.Min (a.Right, b.Right),
  				Math.Min (a.Bottom, b.Bottom));
  		}
  
  		/// <summary>
  		///	Intersect Method
  		/// </summary>
  		///
  		/// <remarks>
  		///	Replaces the RectangleF with the intersection of itself
  		///	and another RectangleF.
  		/// </remarks>
  		
  		public void Intersect (RectangleF rect)
  		{
  			this = RectangleF.Intersect (this, rect);
  		}
  
  		/// <summary>
  		///	Union Shared Method
  		/// </summary>
  		///
  		/// <remarks>
  		///	Produces a new RectangleF from the union of 2 existing 
  		///	RectangleFs.
  		/// </remarks>
  		
  		public static RectangleF Union (RectangleF a, RectangleF b)
  		{
  			return FromLTRB (Math.Min (a.Left, b.Left),
  					 Math.Min (a.Top, b.Top),
  					 Math.Max (a.Right, b.Right),
  					 Math.Max (a.Bottom, b.Bottom));
  		}
  
  		/// <summary>
  		///	Equality Operator
  		/// </summary>
  		///
  		/// <remarks>
  		///	Compares two RectangleF objects. The return value is
  		///	based on the equivalence of the Location and Size 
  		///	properties of the two RectangleFs.
  		/// </remarks>
  
  		public static bool operator == (RectangleF left, RectangleF right)
  		{
  			return (left.X == right.X) && (left.Y == right.Y) &&
                                  (left.Width == right.Width) && (left.Height == right.Height);
  		}
  		
  		/// <summary>
  		///	Inequality Operator
  		/// </summary>
  		///
  		/// <remarks>
  		///	Compares two RectangleF objects. The return value is
  		///	based on the equivalence of the Location and Size 
  		///	properties of the two RectangleFs.
  		/// </remarks>
  
  		public static bool operator != (RectangleF left, RectangleF right)
  		{
  			return (left.X != right.X) || (left.Y != right.Y) ||
                                  (left.Width != right.Width) || (left.Height != right.Height);
  		}
  		
  		/// <summary>
  		///	Rectangle to RectangleF Conversion
  		/// </summary>
  		///
  		/// <remarks>
  		///	Converts a Rectangle object to a RectangleF.
  		/// </remarks>
  
  		public static implicit operator RectangleF (Rectangle r)
  		{
  			return new RectangleF (r.X, r.Y, r.Width, r.Height);
  		}
  		
  
  		// -----------------------
  		// Public Constructors
  		// -----------------------
  
  		/// <summary>
  		///	RectangleF Constructor
  		/// </summary>
  		///
  		/// <remarks>
  		///	Creates a RectangleF from PointF and SizeF values.
  		/// </remarks>
  		
  		public RectangleF (PointF location, SizeF size)
  		{
  			x = location.X;
                          y = location.Y;
                          width = size.Width;
                          height = size.Height;
  		}
  
  		/// <summary>
  		///	RectangleF Constructor
  		/// </summary>
  		///
  		/// <remarks>
  		///	Creates a RectangleF from a specified x,y location and
  		///	width and height values.
  		/// </remarks>
  		
  		public RectangleF (float x, float y, float width, float height)
  		{
  			this.x = x;
                          this.y = y;
                          this.width = width;
                          this.height = height;
  		}
  
  
  #if TARGET_JVM
  		internal RectangleF (java.awt.geom.RectangularShape r2d) {
  			this.x = (float) r2d.getX ();
  			this.y = (float) r2d.getY ();
  			this.width = (float) r2d.getWidth ();
  			this.height = (float) r2d.getHeight ();
  		}
  #endif
  
  		/// <summary>
  		///	Bottom Property
  		/// </summary>
  		///
  		/// <remarks>
  		///	The Y coordinate of the bottom edge of the RectangleF.
  		///	Read only.
  		/// </remarks>
  		
  		[Browsable (false)]
  		public float Bottom {
  			get {
  				return Y + Height;
  			}
  		}
  
  		/// <summary>
  		///	Height Property
  		/// </summary>
  		///
  		/// <remarks>
  		///	The Height of the RectangleF.
  		/// </remarks>
  		
  		public float Height {
  			get {
  				return height;
  			}
  			set {
  				height = value;
  			}
  		}
  
  		/// <summary>
  		///	IsEmpty Property
  		/// </summary>
  		///
  		/// <remarks>
  		///	Indicates if the width or height are zero. Read only.
  		/// </remarks>
  		//		
  		[Browsable (false)]
  		public bool IsEmpty {
  			get {
  				return (width <= 0 || height <= 0);
  			}
  		}
  
  		/// <summary>
  		///	Left Property
  		/// </summary>
  		///
  		/// <remarks>
  		///	The X coordinate of the left edge of the RectangleF.
  		///	Read only.
  		/// </remarks>
  		
  		[Browsable (false)]
  		public float Left {
  			get {
  				return X;
  			}
  		}
  
  		/// <summary>
  		///	Location Property
  		/// </summary>
  		///
  		/// <remarks>
  		///	The Location of the top-left corner of the RectangleF.
  		/// </remarks>
  		
  		[Browsable (false)]
  		public PointF Location {
  			get {
  				return new PointF (x, y);
  			}
  			set {
  				x = value.X;
                                  y = value.Y;
  			}
  		}
  
  		/// <summary>
  		///	Right Property
  		/// </summary>
  		///
  		/// <remarks>
  		///	The X coordinate of the right edge of the RectangleF.
  		///	Read only.
  		/// </remarks>
  		
  		[Browsable (false)]
  		public float Right {
  			get {
  				return X + Width;
  			}
  		}
  
  		/// <summary>
  		///	Size Property
  		/// </summary>
  		///
  		/// <remarks>
  		///	The Size of the RectangleF.
  		/// </remarks>
  		
  		[Browsable (false)]
  		public SizeF Size {
  			get {
  				return new SizeF (width, height);
  			}
  			set {
  				width = value.Width;
                                  height = value.Height;
  			}
  		}
  
  		/// <summary>
  		///	Top Property
  		/// </summary>
  		///
  		/// <remarks>
  		///	The Y coordinate of the top edge of the RectangleF.
  		///	Read only.
  		/// </remarks>
  		
  		[Browsable (false)]
  		public float Top {
  			get {
  				return Y;
  			}
  		}
  
  		/// <summary>
  		///	Width Property
  		/// </summary>
  		///
  		/// <remarks>
  		///	The Width of the RectangleF.
  		/// </remarks>
  		
  		public float Width {
  			get {
  				return width;
  			}
  			set {
  				width = value;
  			}
  		}
  
  		/// <summary>
  		///	X Property
  		/// </summary>
  		///
  		/// <remarks>
  		///	The X coordinate of the RectangleF.
  		/// </remarks>
  		
  		public float X {
  			get {
  				return x;
  			}
  			set {
  				x = value;
  			}
  		}
  
  		/// <summary>
  		///	Y Property
  		/// </summary>
  		///
  		/// <remarks>
  		///	The Y coordinate of the RectangleF.
  		/// </remarks>
  		
  		public float Y {
  			get {
  				return y;
  			}
  			set {
  				y = value;
  			}
  		}
  
  		/// <summary>
  		///	Contains Method
  		/// </summary>
  		///
  		/// <remarks>
  		///	Checks if an x,y coordinate lies within this RectangleF.
  		/// </remarks>
  		
  		public bool Contains (float x, float y)
  		{
  			return ((x >= Left) && (x < Right) && 
  				(y >= Top) && (y < Bottom));
  		}
  
  		/// <summary>
  		///	Contains Method
  		/// </summary>
  		///
  		/// <remarks>
  		///	Checks if a Point lies within this RectangleF.
  		/// </remarks>
  		
  		public bool Contains (PointF pt)
  		{
  			return Contains (pt.X, pt.Y);
  		}
  
  		/// <summary>
  		///	Contains Method
  		/// </summary>
  		///
  		/// <remarks>
  		///	Checks if a RectangleF lies entirely within this 
  		///	RectangleF.
  		/// </remarks>
  		
  		public bool Contains (RectangleF rect)
  		{
  			return X <= rect.X && Right >= rect.Right && Y <= rect.Y && Bottom >= rect.Bottom;
  		}
  
  		/// <summary>
  		///	Equals Method
  		/// </summary>
  		///
  		/// <remarks>
  		///	Checks equivalence of this RectangleF and an object.
  		/// </remarks>
  		
  		public override bool Equals (object obj)
  		{
  			if (!(obj is RectangleF))
  				return false;
  
  			return (this == (RectangleF) obj);
  		}
  
  		/// <summary>
  		///	GetHashCode Method
  		/// </summary>
  		///
  		/// <remarks>
  		///	Calculates a hashing value.
  		/// </remarks>
  		
  		public override int GetHashCode ()
  		{
  
gt: 			return (int) (x + y + width + height);