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

   1
   2 //
   3 // Permission is hereby granted, free of charge, to any person obtaining
   4 // a copy of this software and associated documentation files (the
   5 // "Software"), to deal in the Software without restriction, including
   6 // without limitation the rights to use, copy, modify, merge, publish,
   7 // distribute, sublicense, and/or sell copies of the Software, and to
   8 // permit persons to whom the Software is furnished to do so, subject to
   9 // the following conditions:
  10 //
  11 // The above copyright notice and this permission notice shall be
  12 // included in all copies or substantial portions of the Software.
  13 //
  14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  15 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  16 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  17 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  18 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  19 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  20 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  21 //
  22 /**\r
  23  * Namespace: System.Web.UI.WebControls\r
  24  * Struct:    FontUnit\r
  25  *\r
  26  * Author:  Gaurav Vaish\r
  27  * Maintainer: gvaish@iitk.ac.in\r
  28  * Contact: <my_scripts2001@yahoo.com>, <gvaish@iitk.ac.in>\r
  29  * Implementation: yes\r
  30  * Status:  100%\r
  31  *\r
  32  * (C) Gaurav Vaish (2001)\r
  33  */\r
  34 \r
  35 using System;\r
  36 using System.Collections;\r
  37 using System.ComponentModel;\r
  38 using System.Globalization;\r
  39 using System.Web;\r
  40 using System.Web.UI;\r
  41 \r
  42 namespace System.Web.UI.WebControls\r
  43 {\r
  44         [TypeConverter(typeof(FontUnitConverter))]\r
  45         public struct FontUnit\r
  46         {\r
  47                 public static readonly FontUnit Empty   = new FontUnit();\r
  48                 public static readonly FontUnit Large   = new FontUnit(FontSize.Large);\r
  49                 public static readonly FontUnit Larger  = new FontUnit(FontSize.Larger);\r
  50                 public static readonly FontUnit Medium  = new FontUnit(FontSize.Medium);\r
  51                 public static readonly FontUnit Small   = new FontUnit(FontSize.Small);\r
  52                 public static readonly FontUnit Smaller = new FontUnit(FontSize.Smaller);\r
  53                 public static readonly FontUnit XLarge  = new FontUnit(FontSize.XLarge);\r
  54                 public static readonly FontUnit XSmall  = new FontUnit(FontSize.XSmall);\r
  55                 public static readonly FontUnit XXLarge = new FontUnit(FontSize.XXLarge);\r
  56                 public static readonly FontUnit XXSmall = new FontUnit(FontSize.XXSmall);\r
  57 \r
  58                 private FontSize type;\r
  59                 private Unit     val;\r
  60 \r
  61                 private static Hashtable sizeTable;\r
  62 \r
  63                 static FontUnit ()\r
  64                 {\r
  65                         sizeTable = new Hashtable (CaseInsensitiveHashCodeProvider.Default,\r
  66                                                    CaseInsensitiveComparer.Default);\r
  67                         sizeTable.Add ("smaller", 2);\r
  68                         sizeTable.Add ("larger", 3);\r
  69                         sizeTable.Add ("xx-small", 4);\r
  70                         sizeTable.Add ("xxsmall", 4);\r
  71                         sizeTable.Add ("x-small", 5);\r
  72                         sizeTable.Add ("xsmall", 5);\r
  73                         sizeTable.Add ("small", 6);\r
  74                         sizeTable.Add ("medium", 7);\r
  75                         sizeTable.Add ("large", 8);\r
  76                         sizeTable.Add ("xlarge", 9);\r
  77                         sizeTable.Add ("x-large", 9);\r
  78                         sizeTable.Add ("xxlarge", 10);\r
  79                         sizeTable.Add ("xx-large", 10);\r
  80                 }\r
  81 \r
  82                 public FontUnit(FontSize type)\r
  83                 {\r
  84                         if(!Enum.IsDefined(typeof(FontSize), type))\r
  85                                 throw new ArgumentException();\r
  86                         this.type = type;\r
  87                         if(this.type == FontSize.AsUnit)\r
  88                         {\r
  89                                 val = Unit.Point(10);\r
  90                         } else\r
  91                         {\r
  92                                 val = Unit.Empty;\r
  93                         }\r
  94                 }\r
  95 \r
  96                 public FontUnit(int value)\r
  97                 {\r
  98                         type = FontSize.AsUnit;\r
  99                         val = Unit.Point(value);\r
 100                 }\r
 101 \r
 102                 public FontUnit(string value): this(value, CultureInfo.CurrentCulture)\r
 103                 {\r
 104                 }\r
 105 \r
 106                 public FontUnit(Unit value)\r
 107                 {\r
 108                         if(value.IsEmpty)\r
 109                         {\r
 110                                 type = FontSize.NotSet;\r
 111                                 val  = Unit.Empty;\r
 112                         } else\r
 113                         {\r
 114                                 type = FontSize.AsUnit;\r
 115                                 val  = value;\r
 116                         }\r
 117                 }\r
 118 \r
 119                 public FontUnit(string value, CultureInfo culture)\r
 120                 {\r
 121                         type = FontSize.NotSet;\r
 122                         val  = Unit.Empty;\r
 123                         if(value != null && value != String.Empty)\r
 124                         {\r
 125                                 string low = value.ToLower(culture);\r
 126                                 int size = GetTypeFromString(low);\r
 127                                 if (size != -1)\r
 128                                 {\r
 129                                         type = (FontSize)size;\r
 130                                 } else {\r
 131                                         val = new Unit(value, culture, UnitType.Point);\r
 132                                         type = FontSize.AsUnit;\r
 133                                 }\r
 134                         }\r
 135                 }\r
 136 \r
 137                 private static int GetTypeFromString(string strVal)\r
 138                 {\r
 139                         if (!(sizeTable.ContainsKey (strVal)))\r
 140                                         return -1;\r
 141                         return (int) sizeTable [strVal];\r
 142                 }\r
 143 \r
 144                 public static FontUnit Parse(string s)\r
 145                 {\r
 146                         return Parse(s, CultureInfo.CurrentCulture);\r
 147                 }\r
 148 \r
 149                 public static FontUnit Parse(string s, CultureInfo culture)\r
 150                 {\r
 151                         return new FontUnit(s, culture);\r
 152                 }\r
 153 \r
 154                 public static FontUnit Point(int n)\r
 155                 {\r
 156                         return new FontUnit(n);\r
 157                 }\r
 158 \r
 159                 public static bool operator ==(FontUnit left, FontUnit right)\r
 160                 {\r
 161                         return (left.type == right.type && left.val == right.val);\r
 162                 }\r
 163 \r
 164                 public static bool operator !=(FontUnit left, FontUnit right)\r
 165                 {\r
 166                         return !(left == right);\r
 167                 }\r
 168 \r
 169                 public static implicit operator FontUnit(int n)\r
 170                 {\r
 171                         return FontUnit.Point(n);\r
 172                 }\r
 173 \r
 174                 public override bool Equals(object obj)\r
 175                 {\r
 176                         if(obj!= null && obj is FontUnit)\r
 177                         {\r
 178                                 FontUnit that = (FontUnit)obj;\r
 179                                 return (this.type == that.type && this.val == that.val);\r
 180                         }\r
 181                         return false;\r
 182                 }\r
 183 \r
 184                 public override int GetHashCode()\r
 185                 {\r
 186                         return ( (type.GetHashCode() << 2) | val.GetHashCode() );\r
 187                 }\r
 188 \r
 189                 public override string ToString()\r
 190                 {\r
 191                         return ToString(CultureInfo.CurrentCulture);\r
 192                 }\r
 193 \r
 194                 public string ToString(CultureInfo culture)\r
 195                 {\r
 196                         if(IsEmpty)\r
 197                         {\r
 198                                 return String.Empty;\r
 199                         }\r
 200                         //string strRepr = String.Empty;\r
 201                         switch(type)\r
 202                         {\r
 203                                 case FontSize.AsUnit:  return val.ToString(culture);\r
 204                                 case FontSize.XXSmall: return "XX-Small";\r
 205                                 case FontSize.XSmall:  return "X-Small";\r
 206                                 case FontSize.XLarge:  return "X-Large";\r
 207                                 case FontSize.XXLarge: return "XX-Large";\r
 208                                 default:               return PropertyConverter.EnumToString(typeof(FontSize), type);\r
 209                         }\r
 210                 }\r
 211 \r
 212                 public bool IsEmpty\r
 213                 {\r
 214                         get\r
 215                         {\r
 216                                 return (type == FontSize.NotSet);\r
 217                         }\r
 218                 }\r
 219 \r
 220                 public FontSize Type\r
 221                 {\r
 222                         get\r
 223                         {\r
 224                                 return type;\r
 225                         }\r
 226                 }\r
 227 \r
 228                 public Unit Unit\r
 229                 {\r
 230                         get\r
 231                         {\r
 232                                 return val;\r
 233                         }\r
 234                 }\r
 235         }\r
 236 }\r