mcs/class/System.Drawing/System.Drawing/FontConverter.cs

   1 //
   2 // System.Drawing.FontConverter.cs
   3 //
   4 // Authors:
   5 //      Dennis Hayes (dennish@Raytek.com)
   6 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   7 //      Ravindra (rkumar@novell.com)
   8 //
   9 // Copyright (C) 2002,2003 Ximian, Inc.  http://www.ximian.com
  10 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System;
  34 using System.Collections;
  35 using System.ComponentModel;
  36 using System.Globalization;
  37
  38 namespace System.Drawing
  39 {
  40         public class FontConverter : TypeConverter
  41         {
  42                 public FontConverter ()
  43                 {
  44                 }
  45
  46                 public override bool CanConvertFrom (ITypeDescriptorContext context, Type sourceType)
  47                 {
  48                         if (sourceType == typeof (string))
  49                                 return true;
  50
  51                         return base.CanConvertFrom (context, sourceType);
  52                 }
  53
  54                 public override bool CanConvertTo (ITypeDescriptorContext context, Type destinationType)
  55                 {
  56                         if (destinationType == typeof (String))
  57                                 return true;
  58
  59                         return base.CanConvertTo (context, destinationType);
  60                 }
  61
  62                 public override object ConvertTo (ITypeDescriptorContext context,
  63                                                   CultureInfo culture,
  64                                                   object value,
  65                                                   Type destinationType)
  66                 {
  67                         if ((destinationType == typeof (string)) && (value is Font))
  68                                 return value.ToString ();
  69
  70                         return base.ConvertTo (context, culture, value, destinationType);
  71                 }
  72
  73                 [MonoTODO]
  74                 public override object ConvertFrom (ITypeDescriptorContext context,
  75                                                     CultureInfo culture,
  76                                                     object value)
  77                 {
  78                         throw new NotImplementedException ();
  79                 }
  80
  81                 [MonoTODO]
  82                 public override object CreateInstance (ITypeDescriptorContext context,
  83                                                        IDictionary propertyValues)
  84                 {
  85                         throw new NotImplementedException ();
  86                 }
  87
  88                 public override bool GetCreateInstanceSupported (ITypeDescriptorContext context)
  89                 {
  90                         return true;
  91                 }
  92
  93                 public override PropertyDescriptorCollection GetProperties (ITypeDescriptorContext context,
  94                                                                             object value,
  95                                                                             Attribute [] attributes)
  96                 {
  97                         if (value is Font)
  98                                 return TypeDescriptor.GetProperties (value, attributes);
  99
 100                         return base.GetProperties (context, value, attributes);
 101                 }
 102
 103                 public override bool GetPropertiesSupported (ITypeDescriptorContext context)
 104                 {
 105                         return true;
 106                 }
 107
 108                 public sealed class FontNameConverter : TypeConverter
 109                 {
 110                         public FontNameConverter ()
 111                         {
 112                         }
 113
 114                         public override bool CanConvertFrom (ITypeDescriptorContext context, Type sourceType)
 115                         {
 116                                 if (sourceType == typeof (string))
 117                                         return true;
 118
 119                                 return base.CanConvertFrom (context, sourceType);
 120                         }
 121
 122                         [MonoTODO]
 123                         public override object ConvertFrom (ITypeDescriptorContext context,
 124                                                             CultureInfo culture,
 125                                                             object value)
 126                         {
 127                                 throw new NotImplementedException ();
 128                         }
 129
 130                         [MonoTODO]
 131                         public override StandardValuesCollection GetStandardValues (ITypeDescriptorContext context)
 132                         {
 133                                 throw new NotImplementedException ();
 134                         }
 135
 136                         [MonoTODO]
 137                         public override bool GetStandardValuesExclusive (ITypeDescriptorContext context)
 138                         {
 139                                 throw new NotImplementedException ();
 140                         }
 141
 142                         public override bool GetStandardValuesSupported (ITypeDescriptorContext context)
 143                         {
 144                                 return true;
 145                         }
 146
 147                         [MonoTODO]
 148                         ~FontNameConverter ()
 149                         {
 150                                 throw new NotImplementedException ();
 151                         }
 152                 }
 153
 154                 public class FontUnitConverter : EnumConverter
 155                 {
 156                         public FontUnitConverter () : base (typeof (GraphicsUnit))
 157                         {
 158                         }
 159
 160                         [MonoTODO]
 161                         public override StandardValuesCollection GetStandardValues (ITypeDescriptorContext context)
 162                         {
 163                                 throw new NotImplementedException ();
 164                         }
 165                 }
 166         }
 167 }