mcs/class/Managed.Windows.Forms/System.Windows.Forms/Padding.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
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   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2005,2006 Novell, Inc. (http://www.novell.com)
  21 //
  22 // Author:
  23 //      Pedro Martínez Juliá <pedromj@gmail.com>
  24 //      Daniel Nauck    (dna(at)mono-project(dot)de)
  25 //
  26
  27 using System;
  28 using System.ComponentModel;
  29 using System.Drawing;
  30
  31 namespace System.Windows.Forms {
  32
  33         [Serializable]
  34         [TypeConverter(typeof(PaddingConverter))]
  35         public struct Padding {
  36
  37                 //NOTE: "_var" field name is required by serialization.
  38                 private int _bottom;
  39                 private int _left;
  40                 private int _right;
  41                 private int _top;
  42                 private bool _all;
  43
  44                 public Padding (int all) {
  45                         _left = all;
  46                         _right = all;
  47                         _top = all;
  48                         _bottom = all;
  49                         _all = true;
  50                 }
  51
  52                 public Padding (int left, int top, int right, int bottom) {
  53                         _left = left;
  54                         _right = right;
  55                         _top = top;
  56                         _bottom = bottom;
  57                         _all = (_left == _top) && (_left == _right) && (_left == _bottom);
  58                 }
  59
  60                 public static readonly Padding Empty = new Padding(0);
  61
  62                 [RefreshProperties(RefreshProperties.All)]
  63                 public int All {
  64                         get {
  65                                 if(!_all)
  66                                         return -1;
  67                                 else
  68                                         return _top;
  69                         }
  70                         set {
  71                                 _all = true;
  72                                 _left = _top = _right = _bottom = value;
  73                         }
  74                 }
  75
  76                 [RefreshProperties(RefreshProperties.All)]
  77                 public int Bottom {
  78                         get { return _bottom; }
  79                         set {
  80                                 _bottom = value;
  81                                 _all = false;
  82                         }
  83                 }
  84
  85                 [Browsable(false)]
  86                 public int Horizontal {
  87                         get { return _left + _right; }
  88                 }
  89
  90                 [RefreshProperties(RefreshProperties.All)]
  91                 public int Left {
  92                         get { return _left; }
  93                         set {
  94                                 _left = value;
  95                                 _all = false;
  96                         }
  97                 }
  98
  99                 [RefreshProperties(RefreshProperties.All)]
 100                 public int Right {
 101                         get { return _right; }
 102                         set {
 103                                 _right = value;
 104                                 _all = false;
 105                         }
 106                 }
 107
 108                 [Browsable(false)]
 109                 public Size Size {
 110                         get { return new Size(Horizontal, Vertical); }
 111                 }
 112
 113                 [RefreshProperties(RefreshProperties.All)]
 114                 public int Top {
 115                         get { return _top; }
 116                         set {
 117                                 _top = value;
 118                                 _all = false;
 119                         }
 120                 }
 121
 122                 [Browsable(false)]
 123                 public int Vertical {
 124                         get { return _top + _bottom; }
 125                 }
 126
 127                 public static Padding Add (Padding p1, Padding p2) {
 128                         return p1 + p2;
 129                 }
 130
 131                 public override bool Equals (object other) {
 132                         if (other is Padding) {
 133                                 Padding other_aux = (Padding) other;
 134                                 return _left == other_aux.Left &&
 135                                         _top == other_aux.Top &&
 136                                         _right == other_aux.Right &&
 137                                         _bottom == other_aux.Bottom;
 138                         }
 139                         return false;
 140                 }
 141
 142                 public override int GetHashCode () {
 143                         return _top ^ _bottom ^ _left ^ _right;
 144                 }
 145
 146                 public static Padding operator+ (Padding p1, Padding p2) {
 147                         return new Padding(p1.Left + p2.Left, p1.Top + p2.Top, p1.Right + p2.Right, p1.Bottom + p2.Bottom);
 148                 }
 149
 150                 public static bool operator== (Padding p1, Padding p2) {
 151                         return p1.Equals(p2);
 152                 }
 153
 154                 public static bool operator!= (Padding p1, Padding p2) {
 155                         return !(p1.Equals(p2));
 156                 }
 157
 158                 public static Padding operator- (Padding p1, Padding p2) {
 159                         return new Padding(p1.Left - p2.Left, p1.Top - p2.Top, p1.Right - p2.Right, p1.Bottom - p2.Bottom);
 160                 }
 161
 162                 public static Padding Subtract (Padding p1, Padding p2) {
 163                         return p1 - p2;
 164                 }
 165
 166                 public override string ToString () {
 167                         return "{Left=" + Left + ",Top="+ Top + ",Right=" + Right + ",Bottom=" + Bottom + "}";
 168                 }
 169         }
 170 }