//
// System.Drawing.SizeF.cs
//
// Author:
// Mike Kestner (mkestner@speakeasy.net)
//
// Copyright (C) 2001 Mike Kestner
// Copyright (C) 2004 Novell, Inc. http://www.novell.com
//
//
// Copyright (C) 2004 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.Globalization;
using System.Runtime.InteropServices;
using System.ComponentModel;
namespace System.Drawing
{
[Serializable]
[ComVisible (true)]
[TypeConverter (typeof (SizeFConverter))]
public struct SizeF
{
// Private height and width fields.
private float width, height;
// -----------------------
// 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 sz1, SizeF sz2)
{
return ((sz1.Width == sz2.Width) &&
(sz1.Height == sz2.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 sz1, SizeF sz2)
{
return ((sz1.Width != sz2.Width) ||
(sz1.Height != sz2.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 size)
{
return new PointF (size.Width, size.Height);
}
// -----------------------
// Public Constructors
// -----------------------
///
/// SizeF Constructor
///
///
///
/// Creates a SizeF from a PointF value.
///
public SizeF (PointF pt)
{
width = pt.X;
height = pt.Y;
}
///
/// SizeF Constructor
///
///
///
/// Creates a SizeF from an existing SizeF value.
///
public SizeF (SizeF size)
{
width = size.Width;
height = size.Height;
}
///
/// SizeF Constructor
///
///
///
/// Creates a SizeF from specified dimensions.
///
public SizeF (float width, float height)
{
this.width = width;
this.height = height;
}
// -----------------------
// Public Instance Members
// -----------------------
///
/// IsEmpty Property
///
///
///
/// Indicates if both Width and Height are zero.
///
[Browsable (false)]
public bool IsEmpty {
get {
return ((width == 0.0) && (height == 0.0));
}
}
///
/// Width Property
///
///
///
/// The Width coordinate of the SizeF.
///
public float Width {
get {
return width;
}
set {
width = value;
}
}
///
/// Height Property
///
///
///
/// The Height coordinate of the SizeF.
///
public float Height {
get {
return height;
}
set {
height = value;
}
}
///
/// Equals Method
///
///
///
/// Checks equivalence of this SizeF and another object.
///
public override bool Equals (object obj)
{
if (!(obj is SizeF))
return false;
return (this == (SizeF) obj);
}
///
/// GetHashCode Method
///
///
///
/// Calculates a hashing value.
///
public override int GetHashCode ()
{
return (int) width ^ (int) height;
}
public PointF ToPointF ()
{
return new PointF (width, height);
}
public Size ToSize ()
{
int w, h;
checked {
w = (int) width;
h = (int) height;
}
return new Size (w, h);
}
///
/// ToString Method
///
///
///
/// Formats the SizeF as a string in coordinate notation.
///
public override string ToString ()
{
return string.Format ("{{Width={0}, Height={1}}}", width.ToString (CultureInfo.CurrentCulture),
height.ToString (CultureInfo.CurrentCulture));
}
public static SizeF Add (SizeF sz1, SizeF sz2)
{
return new SizeF (sz1.Width + sz2.Width,
sz1.Height + sz2.Height);
}
public static SizeF Subtract (SizeF sz1, SizeF sz2)
{
return new SizeF (sz1.Width - sz2.Width,
sz1.Height - sz2.Height);
}
}
}