Margins.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / CommonUI / System / Drawing / Printing / Margins.cs / 1407647 / Margins.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Drawing.Printing { 
    using System.Runtime.Serialization.Formatters; 
    using System.Runtime.Serialization;
 
    using System.Diagnostics;
    using System;
    using System.Runtime.InteropServices;
    using System.Drawing; 
    using Microsoft.Win32;
    using System.ComponentModel; 
    using System.Globalization; 

    ///  
    /// 
    ///    
    ///       Specifies the margins of a printed page.
    ///     
    /// 
    [ 
        Serializable, 
        TypeConverterAttribute(typeof(MarginsConverter))
    ] 
    public class Margins : ICloneable {
        private int left;
        private int right;
        private int top; 
        private int bottom;
 
        [OptionalField] 
        private double doubleLeft;
        [OptionalField] 
        private double doubleRight;
        [OptionalField]
        private double doubleTop;
        [OptionalField] 
        private double doubleBottom;
 
        ///  
        /// 
        ///     
        ///       Initializes a new instance of a the  class with one-inch margins.
        ///    
        /// 
        public Margins() : this(100, 100, 100, 100) { 
        }
 
        ///  
        /// 
        ///     
        ///       Initializes a new instance of a the  class with the specified left, right, top, and bottom
        ///       margins.
        ///    
        ///  
        public Margins(int left, int right, int top, int bottom) {
            CheckMargin(left, "left"); 
            CheckMargin(right, "right"); 
            CheckMargin(top, "top");
            CheckMargin(bottom, "bottom"); 

            this.left = left;
            this.right = right;
            this.top = top; 
            this.bottom = bottom;
 
            this.doubleLeft = (double)left; 
            this.doubleRight = (double)right;
            this.doubleTop = (double)top; 
            this.doubleBottom = (double)bottom;
        }

        ///  
        /// 
        ///     
        ///       Gets or sets the left margin, in hundredths of an inch. 
        ///    
        ///  
        public int Left {
            get { return left;}
            set {
                CheckMargin(value, "Left"); 
                left = value;
                this.doubleLeft = (double)value; 
            } 
        }
 
        /// 
        /// 
        ///    
        ///       Gets or sets the right margin, in hundredths of an inch. 
        ///    
        ///  
        public int Right { 
            get { return right;}
            set { 
                CheckMargin(value, "Right");
                right = value;
                this.doubleRight = (double)value;
            } 
        }
 
        ///  
        /// 
        ///     
        ///       Gets or sets the top margin, in hundredths of an inch.
        ///    
        /// 
        public int Top { 
            get { return top;}
            set { 
                CheckMargin(value, "Top"); 
                top = value;
                this.doubleTop = (double)value; 
            }
        }

        ///  
        /// 
        ///     
        ///       Gets or sets the bottom margin, in hundredths of an inch. 
        ///    
        ///  
        public int Bottom {
            get { return bottom;}
            set {
                CheckMargin(value, "Bottom"); 
                bottom = value;
                this.doubleBottom = (double)value; 
            } 
        }
 
        /// 
        /// 
        ///    
        ///       Gets or sets the left margin with double value, in hundredths of an inch. 
        ///       When use the setter, the ranger of setting double value should between
        ///       0 to Int.MaxValue; 
        ///     
        /// 
        internal double DoubleLeft { 
            get { return doubleLeft; }
            set {
                this.Left = (int)Math.Round(value);
                doubleLeft = value; 
            }
        } 
 
        /// 
        ///  
        ///    
        ///       Gets or sets the right margin with double value, in hundredths of an inch.
        ///       When use the setter, the ranger of setting double value should between
        ///       0 to Int.MaxValue; 
        ///    
        ///  
        internal double DoubleRight { 
            get { return doubleRight; }
            set { 
                this.Right = (int)Math.Round(value);
                doubleRight = value;
            }
        } 

        ///  
        ///  
        ///    
        ///       Gets or sets the top margin with double value, in hundredths of an inch. 
        ///       When use the setter, the ranger of setting double value should between
        ///       0 to Int.MaxValue;
        ///    
        ///  
        internal double DoubleTop {
            get { return doubleTop; } 
            set { 
                this.Top = (int)Math.Round(value);
                doubleTop = value; 
            }
        }

        ///  
        /// 
        ///     
        ///       Gets or sets the bottom margin with double value, in hundredths of an inch. 
        ///       When use the setter, the ranger of setting double value should between
        ///       0 to Int.MaxValue; 
        ///    
        /// 
        internal double DoubleBottom {
            get { return doubleBottom; } 
            set {
                this.Bottom = (int)Math.Round(value); 
                doubleBottom = value; 
            }
        } 

        [OnDeserialized()]
        private void OnDeserializedMethod(StreamingContext context) {
            if (doubleLeft == 0 && left != 0) { 
                doubleLeft = (double)left;
            } 
 
            if (doubleRight == 0 && right != 0) {
                doubleRight = (double)right; 
            }

            if (doubleTop == 0 && top != 0) {
                doubleTop = (double)top; 
            }
 
            if (doubleBottom == 0 && bottom != 0) { 
                doubleBottom = (double)bottom;
            } 
        }

        private void CheckMargin(int margin, string name) {
            if (margin < 0) 
                throw new ArgumentException(SR.GetString(SR.InvalidLowBoundArgumentEx, name, margin, "0"));
        } 
 
        /// 
        ///  
        ///    
        ///       Retrieves a duplicate of this object, member by member.
        ///    
        ///  
        public object Clone() {
            return MemberwiseClone(); 
        } 

        ///  
        /// 
        ///    
        ///       Compares this  to a specified  to see whether they
        ///       are equal. 
        ///    
        ///  
        public override bool Equals(object obj) { 
            Margins margins = obj as Margins;
            if (margins == this) return true; 
            if (margins == null) return false;

            return margins.Left == this.Left
            && margins.Right == this.Right 
            && margins.Top == this.Top
            && margins.Bottom == this.Bottom; 
        } 

        ///  
        /// 
        ///    
        ///       Calculates and retrieves a hash code based on the left, right, top, and bottom
        ///       margins. 
        ///    
        ///  
        public override int GetHashCode() { 
            // return HashCodes.Combine(left, right, top, bottom);
            uint left = (uint) this.Left; 
            uint right = (uint) this.Right;
            uint top = (uint) this.Top;
            uint bottom = (uint) this.Bottom;
 
            uint result =  left ^
                           ((right << 13) | (right >> 19)) ^ 
                           ((top << 26) | (top >>  6)) ^ 
                           ((bottom <<  7) | (bottom >> 25));
 
            return(int) result;
        }

        ///  
        /// 
        ///    Tests whether two  objects 
        ///    are identical. 
        /// 
        public static bool operator ==(Margins m1, Margins m2) { 
            if (object.ReferenceEquals(m1, null) != object.ReferenceEquals(m2, null)) {
                return false;
            }
            if (!object.ReferenceEquals(m1, null)) { 
                return m1.Left == m2.Left && m1.Top == m2.Top && m1.Right == m2.Right && m1.Bottom == m2.Bottom;
            } 
            return true; 
        }
 
        /// 
        /// 
        ///    
        ///       Tests whether two  objects are different. 
        ///    
        ///  
        public static bool operator !=(Margins m1, Margins m2) { 
            return !(m1 == m2);
        } 

        /// 
        /// 
        ///  
        ///    
        ///       Provides some interesting information for the Margins in 
        ///       String form. 
        ///    
        ///  
        public override string ToString() {
            return "[Margins"
            + " Left=" + Left.ToString(CultureInfo.InvariantCulture)
            + " Right=" + Right.ToString(CultureInfo.InvariantCulture) 
            + " Top=" + Top.ToString(CultureInfo.InvariantCulture)
            + " Bottom=" + Bottom.ToString(CultureInfo.InvariantCulture) 
            + "]"; 
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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