mcs/class/System.Web/System.Web.UI.WebControls/FontUnit.cs

   1 /**\r
   2  * Namespace: System.Web.UI.WebControls\r
   3  * Struct:    FontUnit\r
   4  *\r
   5  * Author:  Gaurav Vaish\r
   6  * Maintainer: gvaish@iitk.ac.in\r
   7  * Contact: <my_scripts2001@yahoo.com>, <gvaish@iitk.ac.in>\r
   8  * Implementation: yes\r
   9  * Status:  100%\r
  10  *\r
  11  * (C) Gaurav Vaish (2001)\r
  12  */\r
  13 \r
  14 using System;\r
  15 using System.Globalization;\r
  16 using System.Web;\r
  17 using System.Web.UI;\r
  18 \r
  19 namespace System.Web.UI.WebControls\r
  20 {\r
  21         public struct FontUnit\r
  22         {\r
  23                 public static readonly FontUnit Empty   = new FontUnit();\r
  24                 public static readonly FontUnit Large   = new FontUnit(FontSize.Large);\r
  25                 public static readonly FontUnit Larger  = new FontUnit(FontSize.Larger);\r
  26                 public static readonly FontUnit Medium  = new FontUnit(FontSize.Medium);\r
  27                 public static readonly FontUnit Small   = new FontUnit(FontSize.Small);\r
  28                 public static readonly FontUnit Smaller = new FontUnit(FontSize.Smaller);\r
  29                 public static readonly FontUnit XLarge  = new FontUnit(FontSize.XLarge);\r
  30                 public static readonly FontUnit XSmall  = new FontUnit(FontSize.XSmall);\r
  31                 public static readonly FontUnit XXLarge = new FontUnit(FontSize.XXLarge);\r
  32                 public static readonly FontUnit XXSmall = new FontUnit(FontSize.XXSmall);\r
  33 \r
  34                 private FontSize type;\r
  35                 private Unit     val;\r
  36 \r
  37                 public FontUnit(FontSize type)\r
  38                 {\r
  39                         if(!Enum.IsDefined(typeof(FontSize), type))\r
  40                                 throw new ArgumentException();\r
  41                         this.type = type;\r
  42                         if(this.type == FontSize.AsUnit)\r
  43                         {\r
  44                                 val = Unit.Point(10);\r
  45                         } else\r
  46                         {\r
  47                                 val = Unit.Empty;\r
  48                         }\r
  49                 }\r
  50 \r
  51                 public FontUnit(int value)\r
  52                 {\r
  53                         type = FontSize.AsUnit;\r
  54                         val = Unit.Point(value);\r
  55                 }\r
  56 \r
  57                 public FontUnit(string value): this(value, CultureInfo.CurrentCulture)\r
  58                 {\r
  59                 }\r
  60 \r
  61                 public FontUnit(Unit value)\r
  62                 {\r
  63                         if(value.IsEmpty)\r
  64                         {\r
  65                                 type = FontSize.NotSet;\r
  66                                 val  = Unit.Empty;\r
  67                         } else\r
  68                         {\r
  69                                 type = FontSize.AsUnit;\r
  70                                 val  = value;\r
  71                         }\r
  72                 }\r
  73 \r
  74                 public FontUnit(string value, CultureInfo culture)\r
  75                 {\r
  76                         type = FontSize.NotSet;\r
  77                         val  = Unit.Empty;\r
  78                         if(value != null && value != String.Empty)\r
  79                         {\r
  80                                 string low = value.ToLower(culture);\r
  81                                 int index = GetTypeFromString(low);\r
  82                                 if( index != -1)\r
  83                                 {\r
  84                                         type = (FontSize)index;\r
  85                                         return;\r
  86                                 } else\r
  87                                 {\r
  88                                         val = new Unit(value, culture, UnitType.Point);\r
  89                                         type = FontSize.AsUnit;\r
  90                                 }\r
  91                         }\r
  92                 }\r
  93 \r
  94                 private int GetTypeFromString(string strVal)\r
  95                 {\r
  96                         string[] values = {\r
  97                                 "smaller",\r
  98                                 "larger",\r
  99                                 "xx-small",\r
 100                                 "x-small",\r
 101                                 "small",\r
 102                                 "medium",\r
 103                                 "large",\r
 104                                 "xlarge",\r
 105                                 "xxlarge"\r
 106                         };\r
 107                         int i = 0;\r
 108                         foreach(string valType in values)\r
 109                         {\r
 110                                 if(strVal == valType)\r
 111                                 {\r
 112                                         return (i + 2);\r
 113                                 }\r
 114                                 i++;\r
 115                         }\r
 116                         return -1;\r
 117                 }\r
 118 \r
 119                 public static FontUnit Parse(string s)\r
 120                 {\r
 121                         return Parse(s, CultureInfo.CurrentCulture);\r
 122                 }\r
 123 \r
 124                 public static FontUnit Parse(string s, CultureInfo culture)\r
 125                 {\r
 126                         return new FontUnit(s, culture);\r
 127                 }\r
 128 \r
 129                 public static FontUnit Point(int n)\r
 130                 {\r
 131                         return new FontUnit(n);\r
 132                 }\r
 133 \r
 134                 public static bool operator ==(FontUnit left, FontUnit right)\r
 135                 {\r
 136                         return (left.type == right.type && left.val == right.val);\r
 137                 }\r
 138 \r
 139                 public static bool operator !=(FontUnit left, FontUnit right)\r
 140                 {\r
 141                         return !(left == right);\r
 142                 }\r
 143 \r
 144                 public static implicit operator FontUnit(int n)\r
 145                 {\r
 146                         return FontUnit.Point(n);\r
 147                 }\r
 148 \r
 149                 public override bool Equals(object obj)\r
 150                 {\r
 151                         if(obj!= null && obj is FontUnit)\r
 152                         {\r
 153                                 FontUnit that = (FontUnit)obj;\r
 154                                 return (this.type == that.type && this.val == that.val);\r
 155                         }\r
 156                         return false;\r
 157                 }\r
 158 \r
 159                 public override int GetHashCode()\r
 160                 {\r
 161                         return ( (type.GetHashCode() << 2) | val.GetHashCode() );\r
 162                 }\r
 163 \r
 164                 public override string ToString()\r
 165                 {\r
 166                         return ToString(CultureInfo.CurrentCulture);\r
 167                 }\r
 168 \r
 169                 public string ToString(CultureInfo culture)\r
 170                 {\r
 171                         if(IsEmpty)\r
 172                         {\r
 173                                 return String.Empty;\r
 174                         }\r
 175                         //string strRepr = String.Empty;\r
 176                         switch(type)\r
 177                         {\r
 178                                 case FontSize.AsUnit:  return val.ToString(culture);\r
 179                                 case FontSize.XXSmall: return "XX-Small";\r
 180                                 case FontSize.XSmall:  return "X-Small";\r
 181                                 case FontSize.XLarge:  return "X-Large";\r
 182                                 case FontSize.XXLarge: return "XX-Large";\r
 183                                 default:               return PropertyConverter.EnumToString(typeof(FontSize), type);\r
 184                         }\r
 185                 }\r
 186 \r
 187                 public bool IsEmpty\r
 188                 {\r
 189                         get\r
 190                         {\r
 191                                 return (type == FontSize.NotSet);\r
 192                         }\r
 193                 }\r
 194 \r
 195                 public FontSize Type\r
 196                 {\r
 197                         get\r
 198                         {\r
 199                                 return type;\r
 200                         }\r
 201                 }\r
 202 \r
 203                 public Unit Unit\r
 204                 {\r
 205                         get\r
 206                         {\r
 207                                 return val;\r
 208                         }\r
 209                 }\r
 210         }\r
 211 }\r