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 // Copyright (C) 2004 Novell, Inc.  http://www.novell.com
  11 //
  12
  13 //
  14 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  15 //
  16 // Permission is hereby granted, free of charge, to any person obtaining
  17 // a copy of this software and associated documentation files (the
  18 // "Software"), to deal in the Software without restriction, including
  19 // without limitation the rights to use, copy, modify, merge, publish,
  20 // distribute, sublicense, and/or sell copies of the Software, and to
  21 // permit persons to whom the Software is furnished to do so, subject to
  22 // the following conditions:
  23 //
  24 // The above copyright notice and this permission notice shall be
  25 // included in all copies or substantial portions of the Software.
  26 //
  27 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  28 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  29 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  30 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  31 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  32 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  33 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  34 //
  35
  36 using System;
  37 using System.Collections;
  38 using System.ComponentModel;
  39 using System.Globalization;
  40
  41 namespace System.Drawing
  42 {
  43         public class FontConverter : TypeConverter
  44         {
  45                 public FontConverter ()
  46                 {
  47                 }
  48
  49                 public override bool CanConvertFrom (ITypeDescriptorContext context, Type sourceType)
  50                 {
  51                         if (sourceType == typeof (string))
  52                                 return true;
  53
  54                         return base.CanConvertFrom (context, sourceType);
  55                 }
  56
  57                 public override bool CanConvertTo (ITypeDescriptorContext context, Type destinationType)
  58                 {
  59                         if (destinationType == typeof (String))
  60                                 return true;
  61
  62                         return base.CanConvertTo (context, destinationType);
  63                 }
  64
  65                 public override object ConvertTo (ITypeDescriptorContext context,
  66                                                   CultureInfo culture,
  67                                                   object value,
  68                                                   Type destinationType)
  69                 {
  70                         if ((destinationType == typeof (string)) && (value is Font))
  71                                 return value.ToString ();
  72
  73                         return base.ConvertTo (context, culture, value, destinationType);
  74                 }
  75
  76                 [MonoTODO]
  77                 public override object ConvertFrom (ITypeDescriptorContext context,
  78                                                     CultureInfo culture,
  79                                                     object value)
  80                 {
  81                         throw new NotImplementedException ();
  82                 }
  83
  84                 [MonoTODO]
  85                 public override object CreateInstance (ITypeDescriptorContext context,
  86                                                        IDictionary propertyValues)
  87                 {
  88                         throw new NotImplementedException ();
  89                 }
  90
  91                 public override bool GetCreateInstanceSupported (ITypeDescriptorContext context)
  92                 {
  93                         return true;
  94                 }
  95
  96                 public override PropertyDescriptorCollection GetProperties (ITypeDescriptorContext context,
  97                                                                             object value,
  98                                                                             Attribute [] attributes)
  99                 {
 100                         if (value is Font)
 101                                 return TypeDescriptor.GetProperties (value, attributes);
 102
 103                         return base.GetProperties (context, value, attributes);
 104                 }
 105
 106                 public override bool GetPropertiesSupported (ITypeDescriptorContext context)
 107                 {
 108                         return true;
 109                 }
 110
 111                 public sealed class FontNameConverter : TypeConverter
 112                 {
 113                         public FontNameConverter ()
 114                         {
 115                         }
 116
 117                         public override bool CanConvertFrom (ITypeDescriptorContext context, Type sourceType)
 118                         {
 119                                 if (sourceType == typeof (string))
 120                                         return true;
 121
 122                                 return base.CanConvertFrom (context, sourceType);
 123                         }
 124
 125                         [MonoTODO]
 126                         public override object ConvertFrom (ITypeDescriptorContext context,
 127                                                             CultureInfo culture,
 128                                                             object value)
 129                         {
 130                                 throw new NotImplementedException ();
 131                         }
 132
 133                         [MonoTODO]
 134                         public override StandardValuesCollection GetStandardValues (ITypeDescriptorContext context)
 135                         {
 136                                 throw new NotImplementedException ();
 137                         }
 138
 139                         [MonoTODO]
 140                         public override bool GetStandardValuesExclusive (ITypeDescriptorContext context)
 141                         {
 142                                 throw new NotImplementedException ();
 143                         }
 144
 145                         public override bool GetStandardValuesSupported (ITypeDescriptorContext context)
 146                         {
 147                                 return true;
 148                         }
 149
 150                         [MonoTODO]
 151                         ~FontNameConverter ()
 152                         {
 153                                 throw new NotImplementedException ();
 154                         }
 155                 }
 156
 157                 public class FontUnitConverter : EnumConverter
 158                 {
 159                         public FontUnitConverter () : base (typeof (GraphicsUnit))
 160                         {
 161                         }
 162
 163                         [MonoTODO]
 164                         public override StandardValuesCollection GetStandardValues (ITypeDescriptorContext context)
 165                         {
 166                                 throw new NotImplementedException ();
 167                         }
 168                 }
 169         }
 170 }