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
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  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 /**
  23  * Namespace: System.Web.UI.WebControls
  24  * Struct:    FontUnit
  25  *
  26  * Author:  Gaurav Vaish
  27  * Maintainer: gvaish@iitk.ac.in
  28  * Contact: <my_scripts2001@yahoo.com>, <gvaish@iitk.ac.in>
  29  * Implementation: yes
  30  * Status:  100%
  31  *
  32  * (C) Gaurav Vaish (2001)
  33  */
  34
  35 using System;
  36 using System.Collections;
  37 using System.ComponentModel;
  38 using System.Globalization;
  39 using System.Web;
  40 using System.Web.UI;
  41
  42 namespace System.Web.UI.WebControls
  43 {
  44         [TypeConverter(typeof(FontUnitConverter))]
  45         public struct FontUnit
  46         {
  47                 public static readonly FontUnit Empty   = new FontUnit();
  48                 public static readonly FontUnit Large   = new FontUnit(FontSize.Large);
  49                 public static readonly FontUnit Larger  = new FontUnit(FontSize.Larger);
  50                 public static readonly FontUnit Medium  = new FontUnit(FontSize.Medium);
  51                 public static readonly FontUnit Small   = new FontUnit(FontSize.Small);
  52                 public static readonly FontUnit Smaller = new FontUnit(FontSize.Smaller);
  53                 public static readonly FontUnit XLarge  = new FontUnit(FontSize.XLarge);
  54                 public static readonly FontUnit XSmall  = new FontUnit(FontSize.XSmall);
  55                 public static readonly FontUnit XXLarge = new FontUnit(FontSize.XXLarge);
  56                 public static readonly FontUnit XXSmall = new FontUnit(FontSize.XXSmall);
  57
  58                 private FontSize type;
  59                 private Unit     val;
  60
  61                 private static Hashtable sizeTable;
  62
  63                 static FontUnit ()
  64                 {
  65                         sizeTable = new Hashtable (CaseInsensitiveHashCodeProvider.Default,
  66                                                    CaseInsensitiveComparer.Default);
  67                         sizeTable.Add ("smaller", 2);
  68                         sizeTable.Add ("larger", 3);
  69                         sizeTable.Add ("xx-small", 4);
  70                         sizeTable.Add ("xxsmall", 4);
  71                         sizeTable.Add ("x-small", 5);
  72                         sizeTable.Add ("xsmall", 5);
  73                         sizeTable.Add ("small", 6);
  74                         sizeTable.Add ("medium", 7);
  75                         sizeTable.Add ("large", 8);
  76                         sizeTable.Add ("xlarge", 9);
  77                         sizeTable.Add ("x-large", 9);
  78                         sizeTable.Add ("xxlarge", 10);
  79                         sizeTable.Add ("xx-large", 10);
  80                 }
  81
  82                 public FontUnit(FontSize type)
  83                 {
  84                         if(!Enum.IsDefined(typeof(FontSize), type))
  85                                 throw new ArgumentException();
  86                         this.type = type;
  87                         if(this.type == FontSize.AsUnit)
  88                         {
  89                                 val = Unit.Point(10);
  90                         } else
  91                         {
  92                                 val = Unit.Empty;
  93                         }
  94                 }
  95
  96                 public FontUnit(int value)
  97                 {
  98                         type = FontSize.AsUnit;
  99                         val = Unit.Point(value);
 100                 }
 101
 102                 public FontUnit(string value): this(value, CultureInfo.CurrentCulture)
 103                 {
 104                 }
 105
 106                 public FontUnit(Unit value)
 107                 {
 108                         if(value.IsEmpty)
 109                         {
 110                                 type = FontSize.NotSet;
 111                                 val  = Unit.Empty;
 112                         } else
 113                         {
 114                                 type = FontSize.AsUnit;
 115                                 val  = value;
 116                         }
 117                 }
 118
 119                 public FontUnit(string value, CultureInfo culture)
 120                 {
 121                         type = FontSize.NotSet;
 122                         val  = Unit.Empty;
 123                         if(value != null && value != String.Empty)
 124                         {
 125                                 string low = value.ToLower(culture);
 126                                 int size = GetTypeFromString(low);
 127                                 if (size != -1)
 128                                 {
 129                                         type = (FontSize)size;
 130                                 } else {
 131                                         val = new Unit(value, culture, UnitType.Point);
 132                                         type = FontSize.AsUnit;
 133                                 }
 134                         }
 135                 }
 136
 137                 private static int GetTypeFromString(string strVal)
 138                 {
 139                         if (!(sizeTable.ContainsKey (strVal)))
 140                                         return -1;
 141                         return (int) sizeTable [strVal];
 142                 }
 143
 144                 public static FontUnit Parse(string s)
 145                 {
 146                         return Parse(s, CultureInfo.CurrentCulture);
 147                 }
 148
 149                 public static FontUnit Parse(string s, CultureInfo culture)
 150                 {
 151                         return new FontUnit(s, culture);
 152                 }
 153
 154                 public static FontUnit Point(int n)
 155                 {
 156                         return new FontUnit(n);
 157                 }
 158
 159                 public static bool operator ==(FontUnit left, FontUnit right)
 160                 {
 161                         return (left.type == right.type && left.val == right.val);
 162                 }
 163
 164                 public static bool operator !=(FontUnit left, FontUnit right)
 165                 {
 166                         return !(left == right);
 167                 }
 168
 169                 public static implicit operator FontUnit(int n)
 170                 {
 171                         return FontUnit.Point(n);
 172                 }
 173
 174                 public override bool Equals(object obj)
 175                 {
 176                         if(obj!= null && obj is FontUnit)
 177                         {
 178                                 FontUnit that = (FontUnit)obj;
 179                                 return (this.type == that.type && this.val == that.val);
 180                         }
 181                         return false;
 182                 }
 183
 184                 public override int GetHashCode()
 185                 {
 186                         return ( (type.GetHashCode() << 2) | val.GetHashCode() );
 187                 }
 188
 189                 public override string ToString()
 190                 {
 191                         return ToString(CultureInfo.CurrentCulture);
 192                 }
 193
 194                 public string ToString(CultureInfo culture)
 195                 {
 196                         if(IsEmpty)
 197                         {
 198                                 return String.Empty;
 199                         }
 200                         //string strRepr = String.Empty;
 201                         switch(type)
 202                         {
 203                                 case FontSize.AsUnit:  return val.ToString(culture);
 204                                 case FontSize.XXSmall: return "XX-Small";
 205                                 case FontSize.XSmall:  return "X-Small";
 206                                 case FontSize.XLarge:  return "X-Large";
 207                                 case FontSize.XXLarge: return "XX-Large";
 208                                 default:               return PropertyConverter.EnumToString(typeof(FontSize), type);
 209                         }
 210                 }
 211
 212                 public bool IsEmpty
 213                 {
 214                         get
 215                         {
 216                                 return (type == FontSize.NotSet);
 217                         }
 218                 }
 219
 220                 public FontSize Type
 221                 {
 222                         get
 223                         {
 224                                 return type;
 225                         }
 226                 }
 227
 228                 public Unit Unit
 229                 {
 230                         get
 231                         {
 232                                 return val;
 233                         }
 234                 }
 235         }
 236 }