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 using System;
  14 using System.Collections;
  15 using System.ComponentModel;
  16 using System.Globalization;
  17
  18 namespace System.Drawing
  19 {
  20         public class FontConverter : TypeConverter
  21         {
  22                 public FontConverter ()
  23                 {
  24                 }
  25
  26                 public override bool CanConvertFrom (ITypeDescriptorContext context, Type sourceType)
  27                 {
  28                         if (sourceType == typeof (string))
  29                                 return true;
  30
  31                         return base.CanConvertFrom (context, sourceType);
  32                 }
  33
  34                 public override bool CanConvertTo (ITypeDescriptorContext context, Type destinationType)
  35                 {
  36                         if (destinationType == typeof (String))
  37                                 return true;
  38
  39                         return base.CanConvertTo (context, destinationType);
  40                 }
  41
  42                 public override object ConvertTo (ITypeDescriptorContext context,
  43                                                   CultureInfo culture,
  44                                                   object value,
  45                                                   Type destinationType)
  46                 {
  47                         if ((destinationType == typeof (string)) && (value is Font))
  48                                 return value.ToString ();
  49
  50                         return base.ConvertTo (context, culture, value, destinationType);
  51                 }
  52
  53                 [MonoTODO]
  54                 public override object ConvertFrom (ITypeDescriptorContext context,
  55                                                     CultureInfo culture,
  56                                                     object value)
  57                 {
  58                         throw new NotImplementedException ();
  59                 }
  60
  61                 [MonoTODO]
  62                 public override object CreateInstance (ITypeDescriptorContext context,
  63                                                        IDictionary propertyValues)
  64                 {
  65                         throw new NotImplementedException ();
  66                 }
  67
  68                 public override bool GetCreateInstanceSupported (ITypeDescriptorContext context)
  69                 {
  70                         return true;
  71                 }
  72
  73                 public override PropertyDescriptorCollection GetProperties (ITypeDescriptorContext context,
  74                                                                             object value,
  75                                                                             Attribute [] attributes)
  76                 {
  77                         if (value is Font)
  78                                 return TypeDescriptor.GetProperties (value, attributes);
  79
  80                         return base.GetProperties (context, value, attributes);
  81                 }
  82
  83                 public override bool GetPropertiesSupported (ITypeDescriptorContext context)
  84                 {
  85                         return true;
  86                 }
  87
  88                 public sealed class FontNameConverter : TypeConverter
  89                 {
  90                         public FontNameConverter ()
  91                         {
  92                         }
  93
  94                         public override bool CanConvertFrom (ITypeDescriptorContext context, Type sourceType)
  95                         {
  96                                 if (sourceType == typeof (string))
  97                                         return true;
  98
  99                                 return base.CanConvertFrom (context, sourceType);
 100                         }
 101
 102                         [MonoTODO]
 103                         public override object ConvertFrom (ITypeDescriptorContext context,
 104                                                             CultureInfo culture,
 105                                                             object value)
 106                         {
 107                                 throw new NotImplementedException ();
 108                         }
 109
 110                         [MonoTODO]
 111                         public override StandardValuesCollection GetStandardValues (ITypeDescriptorContext context)
 112                         {
 113                                 throw new NotImplementedException ();
 114                         }
 115
 116                         [MonoTODO]
 117                         public override bool GetStandardValuesExclusive (ITypeDescriptorContext context)
 118                         {
 119                                 throw new NotImplementedException ();
 120                         }
 121
 122                         public override bool GetStandardValuesSupported (ITypeDescriptorContext context)
 123                         {
 124                                 return true;
 125                         }
 126
 127                         [MonoTODO]
 128                         ~FontNameConverter ()
 129                         {
 130                                 throw new NotImplementedException ();
 131                         }
 132                 }
 133
 134                 public sealed class FontUnitConverter : TypeConverter
 135                 {
 136                         public FontUnitConverter ()
 137                         {
 138                         }
 139
 140                         [MonoTODO]
 141                         public override StandardValuesCollection GetStandardValues (ITypeDescriptorContext context)
 142                         {
 143                                 throw new NotImplementedException ();
 144                         }
 145                 }
 146         }
 147 }