//
// System.Drawing.PointConverter.cs
//
// Authors:
// Dennis Hayes (dennish@Raytek.com)
// Ravindra (rkumar@novell.com)
//
// Copyright (C) 2002 Ximian, Inc. http://www.ximian.com
// Copyright (C) 2004, 2006, 2008 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Collections;
using System.ComponentModel;
using System.Globalization;
using System.ComponentModel.Design.Serialization;
using System.Reflection;
namespace System.Drawing{
public class PointConverter : TypeConverter
{
public PointConverter() { }
public override bool CanConvertFrom (ITypeDescriptorContext context,
Type sourceType)
{
if (sourceType == typeof (string))
return true;
return base.CanConvertFrom (context, sourceType);
}
public override bool CanConvertTo (ITypeDescriptorContext context,
Type destinationType)
{
if (destinationType == typeof (string))
return true;
if (destinationType == typeof (InstanceDescriptor))
return true;
return base.CanConvertTo (context, destinationType);
}
public override object ConvertFrom (ITypeDescriptorContext context,
CultureInfo culture,
object value)
{
if (culture == null)
culture = CultureInfo.CurrentCulture;
string s = value as string;
if (s == null)
return base.ConvertFrom (context, culture, value);
string [] subs = s.Split (culture.TextInfo.ListSeparator.ToCharArray ());
Int32Converter converter = new Int32Converter ();
int[] numSubs = new int[subs.Length];
for (int i = 0; i < numSubs.Length; i++) {
numSubs[i] = (int) converter.ConvertFromString (context, culture, subs[i]);
}
if (subs.Length != 2)
throw new ArgumentException ("Failed to parse Text(" + s + ") expected text in the format \"x, y.\"");
return new Point (numSubs[0], numSubs[1]);
}
public override object ConvertTo (ITypeDescriptorContext context,
CultureInfo culture,
object value,
Type destinationType)
{
if (culture == null)
culture = CultureInfo.CurrentCulture;
// LAMESPEC: "The default implementation calls the object's
// ToString method if the object is valid and if the destination
// type is string." MS does not behave as per the specs.
// Oh well, we have to be compatible with MS.
if (value is Point) {
Point point = (Point) value;
if (destinationType == typeof (string)) {
return point.X.ToString (culture) + culture.TextInfo.ListSeparator
+ " " + point.Y.ToString (culture);
} else if (destinationType == typeof (InstanceDescriptor)) {
ConstructorInfo ctor = typeof(Point).GetConstructor (new Type[] {typeof(int), typeof(int)} );
return new InstanceDescriptor (ctor, new object[] {point.X, point.Y });
}
}
return base.ConvertTo (context, culture, value, destinationType);
}
public override object CreateInstance (ITypeDescriptorContext context,
IDictionary propertyValues)
{
#if NET_2_0
object ox = propertyValues ["X"];
object oy = propertyValues ["Y"];
if ((ox == null) || (oy == null))
throw new ArgumentException ("propertyValues");
int x = (int) ox;
int y = (int) oy;
#else
int x = (int) propertyValues ["X"];
int y = (int) propertyValues ["Y"];
#endif
return new Point (x, y);
}
public override bool GetCreateInstanceSupported (ITypeDescriptorContext context)
{
return true;
}
public override PropertyDescriptorCollection GetProperties (
ITypeDescriptorContext context,
object value, Attribute[] attributes)
{
if (value is Point)
return TypeDescriptor.GetProperties (value, attributes);
return base.GetProperties (context, value, attributes);
}
public override bool GetPropertiesSupported (ITypeDescriptorContext context)
{
return true;
}
}
}
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