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//
// System.Drawing.LinkArea.cs
//
// Author:
// Dennis Hayes (dennish@raytek.com)
//
// (C) 2002 Ximian, Inc. http://www.ximian.com
//
using System;
namespace System.Windows.Forms {
[Serializable]
public struct LinkArea {
private int start;
private int length;
// -----------------------
// Public Constructor
// -----------------------
/// <summary>
///
/// </summary>
///
/// <remarks>
///
/// </remarks>
public LinkArea (int Start, int Length){
start = Start;
length = Length;
}
// -----------------------
// Public Shared Members
// -----------------------
/// <summary>
/// Equality Operator
/// </summary>
///
/// <remarks>
/// Compares two LinkArea objects. The return value is
/// based on the equivalence of the Start and Length properties of the two objects.
/// </remarks>
public static bool operator == (LinkArea la_a,
LinkArea la_b)
{
return ((la_a.start == la_b.start) &&
(la_a.length == la_b.length));
}
/// <summary>
/// Inequality Operator
/// </summary>
///
/// <remarks>
/// Compares two LinkArea objects. The return value is
/// based on the equivalence of the Start and Length properties of the two objects.
/// </remarks>
public static bool operator != (LinkArea la_a,
LinkArea la_b) {
return ((la_a.start != la_b.start) ||
(la_a.length != la_b.length));
}
// -----------------------
// Public Instance Members
// -----------------------
public int IsEmpty {
get{
// Start can be 0, so no way to know if it is empty.
// Docs seem to say Start must/should be set before
// length, os if length is valid, start must also be ok.
return length!=0;
}
}
public int Start {
get{
return start;
}
set{
start = value;
}
}
public int Length {
get{
return length;
}
set{
length = value;
}
}
/// <summary>
/// Equals Method
/// </summary>
///
/// <remarks>
/// Checks equivalence of this LinkArea and another object.
/// </remarks>
public override bool Equals (object o)
{
if (!(o is LinkArea))
return false;
return (this == (LinkArea) o);
}
/// <summary>
/// GetHashCode Method
/// </summary>
///
/// <remarks>
/// Calculates a hashing value.
/// </remarks>
public override int GetHashCode ()
{
return (int)( start ^ length);
}
/// <summary>
/// ToString Method
/// </summary>
///
/// <remarks>
/// Formats the LinkArea as a string.
/// </remarks>
public override string ToString ()
{
return String.Format ("[{0},{1}]", start, length );
}
}
}
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