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// 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.
//
// Copyright (c) 2007 Novell, Inc. (http://www.novell.com)
//
// Authors:
// Chris Toshok (toshok@novell.com)
//
using System;
using System.ComponentModel;
using System.Windows.Converters;
using System.Windows.Markup;
using System.Windows.Media;
using System.Globalization;
namespace System.Windows {
[Serializable]
[TypeConverter (typeof (PointConverter))]
[ValueSerializer (typeof (PointValueSerializer))]
public struct Point : IFormattable
{
public Point (double x, double y)
{
this._x = x;
this._y = y;
}
public double X {
get { return _x; }
set { _x = value; }
}
public double Y {
get { return _y; }
set { _y = value; }
}
public override bool Equals (object o)
{
if (!(o is Point))
return false;
return Equals ((Point)o);
}
public bool Equals (Point value)
{
return _x == value.X && _y == value.Y;
}
public override int GetHashCode ()
{
return (_x.GetHashCode() ^ _y.GetHashCode());
}
public void Offset (double offsetX, double offsetY)
{
_x += offsetX;
_y += offsetY;
}
public static Point Add (Point point, Vector vector)
{
return new Point (point.X + vector.X, point.Y + vector.Y);
}
public static bool Equals (Point point1, Point point2)
{
return point1.Equals (point2);
}
public static Point Multiply (Point point, Matrix matrix)
{
return new Point (point.X * matrix.M11 + point.Y * matrix.M21 + matrix.OffsetX,
point.X * matrix.M12 + point.Y * matrix.M22 + matrix.OffsetY);
}
public static Vector Subtract (Point point1, Point point2)
{
return new Vector (point1.X - point2.X, point1.Y - point2.Y);
}
public static Point Subtract (Point point, Vector vector)
{
return new Point (point.X - vector.X, point.Y - vector.Y);
}
/* operators */
public static Vector operator -(Point point1, Point point2)
{
return Subtract (point1, point2);
}
public static Point operator -(Point point, Vector vector)
{
return Subtract (point, vector);
}
public static Point operator + (Point point, Vector vector)
{
return Add (point, vector);
}
public static Point operator * (Point point, Matrix matrix)
{
return Multiply (point, matrix);
}
public static bool operator != (Point point1, Point point2)
{
return !point1.Equals(point2);
}
public static bool operator == (Point point1, Point point2)
{
return point1.Equals(point2);
}
public static explicit operator Size (Point point)
{
return new Size (point.X, point.Y);
}
public static explicit operator Vector (Point point)
{
return new Vector (point.X, point.Y);
}
public static Point Parse (string source)
{
if (source == null)
throw new ArgumentNullException ("source");
var tokenizer = new NumericListTokenizer (source, CultureInfo.InvariantCulture);
double x;
double y;
if (!double.TryParse (tokenizer.GetNextToken (), NumberStyles.Float, CultureInfo.InvariantCulture, out x) ||
!double.TryParse (tokenizer.GetNextToken (), NumberStyles.Float, CultureInfo.InvariantCulture, out y))
{
throw new FormatException (string.Format ("Invalid Point format: {0}", source));
}
if (!tokenizer.HasNoMoreTokens ())
{
throw new InvalidOperationException ("Invalid Point format: " + source);
}
return new Point(x, y);
}
public override string ToString ()
{
return this.ToString(null, null);
}
public string ToString (IFormatProvider provider)
{
return this.ToString(null, provider);
}
private string ToString(string format,IFormatProvider formatProvider)
{
if (formatProvider == null)
formatProvider = CultureInfo.CurrentCulture;
if (format == null)
format = string.Empty;
var separator = NumericListTokenizer.GetSeparator (formatProvider);
var pointFormat = string.Format ("{{0:{0}}}{1}{{1:{0}}}", format, separator);
return string.Format (formatProvider, pointFormat, _x, _y);
}
string IFormattable.ToString (string format, IFormatProvider formatProvider)
{
return this.ToString(format, formatProvider);
}
double _x;
double _y;
}
}
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