Padding.cs :  » 2.6.4-mono-.net-core » System.Windows.Forms » System » Windows » Forms » C# / CSharp Open Source

// 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) 2005,2006 Novell, Inc. (http://www.novell.com)
//
// Author:
//  Pedro Martnez Juli <pedromj@gmail.com>
//  Daniel Nauck    (dna(at)mono-project(dot)de)
//

using System;
using System.ComponentModel;
using System.Drawing;

namespace System.Windows.Forms{

  [Serializable]
  [TypeConverter(typeof(PaddingConverter))]
#if NET_2_0
  public
#endif
  struct Padding {

    //NOTE: "_var" field name is required by serialization.
    private int _bottom;
    private int _left;
    private int _right;
    private int _top;
    private bool _all;

    public Padding (int all) {
      _left = all;
      _right = all;
      _top = all;
      _bottom = all;
      _all = true;
    }

    public Padding (int left, int top, int right, int bottom) {
      _left = left;
      _right = right;
      _top = top;
      _bottom = bottom;
      _all = (_left == _top) && (_left == _right) && (_left == _bottom);
    }

    public static readonly Padding Empty = new Padding(0);

    [RefreshProperties(RefreshProperties.All)]
    public int All {
      get { 
        if(!_all)
          return -1;
        else
          return _top; 
      }
      set { 
        _all = true;
        _left = _top = _right = _bottom = value;
      }
    }

    [RefreshProperties(RefreshProperties.All)]
    public int Bottom {
      get { return _bottom; }
      set { 
        _bottom = value;
        _all = false;
      }
    }

    [Browsable(false)]
    public int Horizontal {
      get { return _left + _right; }
    }

    [RefreshProperties(RefreshProperties.All)]
    public int Left {
      get { return _left; }
      set { 
        _left = value;
        _all = false;
      }
    }

    [RefreshProperties(RefreshProperties.All)]
    public int Right {
      get { return _right; }
      set { 
        _right = value;
        _all = false;
      }
    }

    [Browsable(false)]
    public Size Size {
      get { return new Size(Horizontal, Vertical); }
    }

    [RefreshProperties(RefreshProperties.All)]
    public int Top {
      get { return _top; }
      set { 
        _top = value;
        _all = false;
      }
    }

    [Browsable(false)]
    public int Vertical {
      get { return _top + _bottom; }
    }

    public static Padding Add (Padding p1, Padding p2) {
      return p1 + p2;
    }

    public override bool Equals (object other) {
      if (other is Padding) {
        Padding other_aux = (Padding) other;
        return _left == other_aux.Left &&
          _top == other_aux.Top &&
          _right == other_aux.Right &&
          _bottom == other_aux.Bottom;
      }
      return false;
    }

    public override int GetHashCode () {
      return _top ^ _bottom ^ _left ^ _right;
    }

    public static Padding operator+ (Padding p1, Padding p2) {
      return new Padding(p1.Left + p2.Left, p1.Top + p2.Top, p1.Right + p2.Right, p1.Bottom + p2.Bottom);
    }

    public static bool operator== (Padding p1, Padding p2) {
      return p1.Equals(p2);
    }

    public static bool operator!= (Padding p1, Padding p2) {
      return !(p1.Equals(p2));
    }

    public static Padding operator- (Padding p1, Padding p2) {
      return new Padding(p1.Left - p2.Left, p1.Top - p2.Top, p1.Right - p2.Right, p1.Bottom - p2.Bottom);
    }

    public static Padding Subtract (Padding p1, Padding p2) {
      return p1 - p2;
    }

    public override string ToString () {
      return "{Left=" + Left + ",Top="+ Top + ",Right=" + Right + ",Bottom=" + Bottom + "}"; 
    }
  }
}