CornerRadius.cs source code in C# .NET

                        Code:
                         / DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Framework / System / Windows / CornerRadius.cs / 1 / CornerRadius.cs
                        
                        
                            //---------------------------------------------------------------------------- 
//
// Copyright (C) Microsoft Corporation.  All rights reserved.
//
// File: CornerRadius.cs 
//
// Description: Contains the CornerRadius (double x4) value type. 
// 
// History:
//  07/19/2004 : [....]  - created. 
//
//---------------------------------------------------------------------------

using MS.Internal; 
using System.ComponentModel;
using System.Globalization; 
 
namespace System.Windows
{ 
    /// 
    /// CornerRadius is a value type used to describe the radius of a rectangle's corners (controlled independently).
    /// It contains four double structs each corresponding to a corner: TopLeft, TopRight, BottomLeft, BottomRight.
    /// The corner radii cannot be negative. 
    /// 
    [TypeConverter(typeof(CornerRadiusConverter))] 
    public struct CornerRadius : IEquatable 
    {
        //------------------------------------------------------------------- 
        //
        //  Constructors
        //
        //------------------------------------------------------------------- 
        #region Constructors
        ///  
        /// This constructor builds a CornerRadius with a specified uniform double radius value on every corner. 
        /// 
        /// The specified uniform radius. 
        public CornerRadius(double uniformRadius)
        {
            _topLeft = _topRight = _bottomLeft = _bottomRight = uniformRadius;
        } 

        ///  
        /// This constructor builds a CornerRadius with the specified doubles on each corner. 
        /// 
        /// The thickness for the top left corner. 
        /// The thickness for the top right corner.
        /// The thickness for the bottom right corner.
        /// The thickness for the bottom left corner.
        public CornerRadius(double topLeft, double topRight, double bottomRight, double bottomLeft) 
        {
            _topLeft = topLeft; 
            _topRight = topRight; 
            _bottomRight = bottomRight;
            _bottomLeft = bottomLeft; 
        }

        #endregion Constructors
 
        //--------------------------------------------------------------------
        // 
        //  Public Methods 
        //
        //------------------------------------------------------------------- 
        #region Public Methods

        /// 
        /// This function compares to the provided object for type and value equality. 
        /// 
        /// Object to compare 
        /// True if object is a CornerRadius and all sides of it are equal to this CornerRadius'. 
        public override bool Equals(object obj)
        { 
            if (obj is CornerRadius)
            {
                CornerRadius otherObj = (CornerRadius)obj;
                return (this == otherObj); 
            }
            return (false); 
        } 

        ///  
        /// Compares this instance of CornerRadius with another instance.
        /// 
        /// CornerRadius instance to compare.
        /// trueif this CornerRadius instance has the same value 
        /// and unit type as cornerRadius.
        public bool Equals(CornerRadius cornerRadius) 
        { 
            return (this == cornerRadius);
        } 

        /// 
        /// This function returns a hash code.
        ///  
        /// Hash code
        public override int GetHashCode() 
        { 
            return _topLeft.GetHashCode() ^ _topRight.GetHashCode() ^ _bottomLeft.GetHashCode() ^ _bottomRight.GetHashCode();
        } 

        /// 
        /// Converts this Thickness object to a string.
        ///  
        /// String conversion.
        public override string ToString() 
        { 
            return CornerRadiusConverter.ToString(this, CultureInfo.InvariantCulture);
        } 

        #endregion Public Methods

        //-------------------------------------------------------------------- 
        //
        //  Public Operators 
        // 
        //--------------------------------------------------------------------
        #region Public Operators 

        /// 
        /// Overloaded operator to compare two CornerRadiuses for equality.
        ///  
        /// First CornerRadius to compare
        /// Second CornerRadius to compare 
        /// True if all sides of the CornerRadius are equal, false otherwise 
        //  SEEALSO
        public static bool operator==(CornerRadius cr1, CornerRadius cr2) 
        {
            return (    (cr1._topLeft     == cr2._topLeft     || (DoubleUtil.IsNaN(cr1._topLeft)     && DoubleUtil.IsNaN(cr2._topLeft)))
                    &&  (cr1._topRight    == cr2._topRight    || (DoubleUtil.IsNaN(cr1._topRight)    && DoubleUtil.IsNaN(cr2._topRight)))
                    &&  (cr1._bottomRight == cr2._bottomRight || (DoubleUtil.IsNaN(cr1._bottomRight) && DoubleUtil.IsNaN(cr2._bottomRight))) 
                    &&  (cr1._bottomLeft  == cr2._bottomLeft  || (DoubleUtil.IsNaN(cr1._bottomLeft)  && DoubleUtil.IsNaN(cr2._bottomLeft)))
                    ); 
        } 

        ///  
        /// Overloaded operator to compare two CornerRadiuses for inequality.
        /// 
        /// First CornerRadius to compare
        /// Second CornerRadius to compare 
        /// False if all sides of the CornerRadius are equal, true otherwise
        //  SEEALSO 
        public static bool operator!=(CornerRadius cr1, CornerRadius cr2) 
        {
            return (!(cr1 == cr2)); 
        }

        #endregion Public Operators
 

        //------------------------------------------------------------------- 
        // 
        //  Public Properties
        // 
        //--------------------------------------------------------------------

        #region Public Properties
 
        /// This property is the Length on the thickness' top left corner
        public double TopLeft 
        { 
            get { return _topLeft; }
            set { _topLeft = value; } 
        }

        /// This property is the Length on the thickness' top right corner
        public double TopRight 
        {
            get { return _topRight; } 
            set { _topRight = value; } 
        }
 
        /// This property is the Length on the thickness' bottom right corner
        public double BottomRight
        {
            get { return _bottomRight; } 
            set { _bottomRight = value; }
        } 
 
        /// This property is the Length on the thickness' bottom left corner
        public double BottomLeft 
        {
            get { return _bottomLeft; }
            set { _bottomLeft = value; }
        } 

        #endregion Public Properties 
 
        //-------------------------------------------------------------------
        // 
        //  Internal Methods Properties
        //
        //-------------------------------------------------------------------
 
        #region Internal Methods Properties
 
        internal bool IsValid(bool allowNegative, bool allowNaN, bool allowPositiveInfinity, bool allowNegativeInfinity) 
        {
            if (!allowNegative) 
            {
                if (_topLeft < 0d || _topRight < 0d || _bottomLeft < 0d || _bottomRight < 0d)
                {
                    return (false); 
                }
            } 
 
            if (!allowNaN)
            { 
                if (DoubleUtil.IsNaN(_topLeft) || DoubleUtil.IsNaN(_topRight) || DoubleUtil.IsNaN(_bottomLeft) || DoubleUtil.IsNaN(_bottomRight))
                {
                    return (false);
                } 
            }
 
            if (!allowPositiveInfinity) 
            {
                if (Double.IsPositiveInfinity(_topLeft) || Double.IsPositiveInfinity(_topRight) || Double.IsPositiveInfinity(_bottomLeft) || Double.IsPositiveInfinity(_bottomRight)) 
                {
                    return (false);
                }
            } 

            if (!allowNegativeInfinity) 
            { 
                if (Double.IsNegativeInfinity(_topLeft) || Double.IsNegativeInfinity(_topRight) || Double.IsNegativeInfinity(_bottomLeft) || Double.IsNegativeInfinity(_bottomRight))
                { 
                    return (false);
                }
            }
 
            return (true);
        } 
 
        internal bool IsZero
        { 
            get
            {
                return (    DoubleUtil.IsZero(_topLeft)
                        &&  DoubleUtil.IsZero(_topRight) 
                        &&  DoubleUtil.IsZero(_bottomRight)
                        &&  DoubleUtil.IsZero(_bottomLeft) 
                        ); 
            }
        } 

        #endregion Internal Methods Properties

        //------------------------------------------------------------------- 
        //
        //  Private Fields 
        // 
        //--------------------------------------------------------------------
 
        #region Private Fields
        private double _topLeft;
        private double _topRight;
        private double _bottomLeft; 
        private double _bottomRight;
        #endregion 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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CornerRadius.cs source code in C# .NET

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