//
// System.Drawing.SizeF.cs
//
// Author:
// Mike Kestner (mkestner@speakeasy.net)
//
// (C) Ximian, Inc. http://www.ximian.com
//
using System;
namespace System.Drawing {
public struct SizeF {
// Private height and width fields.
float wd, ht;
// -----------------------
// Public Shared Members
// -----------------------
///
/// Empty Shared Field
///
///
///
/// An uninitialized SizeF Structure.
///
public static readonly SizeF Empty;
///
/// Addition Operator
///
///
///
/// Addition of two SizeF structures.
///
public static SizeF operator + (SizeF sz1, SizeF sz2)
{
return new SizeF (sz1.Width + sz2.Width,
sz1.Height + sz2.Height);
}
///
/// Equality Operator
///
///
///
/// Compares two SizeF objects. The return value is
/// based on the equivalence of the Width and Height
/// properties of the two Sizes.
///
public static bool operator == (SizeF sz_a, SizeF sz_b)
{
return ((sz_a.Width == sz_b.Width) &&
(sz_a.Height == sz_b.Height));
}
///
/// Inequality Operator
///
///
///
/// Compares two SizeF objects. The return value is
/// based on the equivalence of the Width and Height
/// properties of the two Sizes.
///
public static bool operator != (SizeF sz_a, SizeF sz_b)
{
return ((sz_a.Width != sz_b.Width) ||
(sz_a.Height != sz_b.Height));
}
///
/// Subtraction Operator
///
///
///
/// Subtracts two SizeF structures.
///
public static SizeF operator - (SizeF sz1, SizeF sz2)
{
return new SizeF (sz1.Width - sz2.Width,
sz1.Height - sz2.Height);
}
///
/// SizeF to PointF Conversion
///
///
///
/// Returns a PointF based on the dimensions of a given
/// SizeF. Requires explicit cast.
///
public static explicit operator PointF (SizeF sz)
{
return new PointF (sz.Width, sz.Height);
}
// -----------------------
// Public Constructors
// -----------------------
///
/// SizeF Constructor
///
///
///
/// Creates a SizeF from a PointF value.
///
public SizeF (PointF pt)
{
wd = pt.X;
ht = pt.Y;
}
///
/// SizeF Constructor
///
///
///
/// Creates a SizeF from an existing SizeF value.
///
public SizeF (SizeF sz)
{
wd = sz.Width;
ht = sz.Height;
}
///
/// SizeF Constructor
///
///
///
/// Creates a SizeF from specified dimensions.
///
public SizeF (float width, float height)
{
wd = width;
ht = height;
}
// -----------------------
// Public Instance Members
// -----------------------
///
/// IsEmpty Property
///
///
///
/// Indicates if both Width and Height are zero.
///
public bool IsEmpty {
get {
return ((wd == 0.0) && (ht == 0.0));
}
}
///
/// Width Property
///
///
///
/// The Width coordinate of the SizeF.
///
public float Width {
get {
return wd;
}
set {
wd = value;
}
}
///
/// Height Property
///
///
///
/// The Height coordinate of the SizeF.
///
public float Height {
get {
return ht;
}
set {
ht = value;
}
}
///
/// Equals Method
///
///
///
/// Checks equivalence of this SizeF and another object.
///
public override bool Equals (object o)
{
if (!(o is SizeF))
return false;
return (this == (SizeF) o);
}
///
/// GetHashCode Method
///
///
///
/// Calculates a hashing value.
///
public override int GetHashCode ()
{
return (int) wd ^ (int) ht;
}
///
/// ToString Method
///
///
///
/// Formats the SizeF as a string in coordinate notation.
///
public override string ToString ()
{
return String.Format ("[{0},{1}]", wd, ht);
}
}
}