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//
// System.Drawing.MarginsConverter.cs
//
// Author:
// Dennis Hayes (dennish@Raytek.com)
// Herve Poussineau (hpoussineau@fr.st)
//
// (C) 2002 Ximian, Inc
//
//
// Copyright (C) 2004 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;
using System.ComponentModel;
using System.Globalization;
using System.Text.RegularExpressions;
using System.ComponentModel.Design.Serialization;
using System.Reflection;
namespace System.Drawing.Printing {
/// <summary>
/// Summary description for MarginsConverter.
/// </summary>
public class MarginsConverter : ExpandableObjectConverter {
public MarginsConverter() {
}
#region Methods
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 (value is string)
{
if (value == null)
return new Margins();
// format [left];[right];[top];[bottom]
string separator = @"( |\t)*";
separator = separator + ";" + separator;
string regex = @"(?<left>\d+)" + separator + @"(?<right>\d+)" + separator + @"(?<top>\d+)" + separator + @"(?<bottom>\d+)";
Match match = new Regex(regex).Match(value as string);
if (!match.Success)
throw new ArgumentException("value");
int left, right, top, bottom;
try
{
left = int.Parse(match.Groups["left"].Value);
right = int.Parse(match.Groups["right"].Value);
top = int.Parse(match.Groups["top"].Value);
bottom = int.Parse(match.Groups["bottom"].Value);
}
catch (Exception e)
{
throw new ArgumentException("value", e);
}
return new Margins(left, right, top, bottom);
} else
return base.ConvertFrom(context, culture, value);
}
public override object ConvertTo(ITypeDescriptorContext context,CultureInfo culture,object value,Type destinationType) {
if (destinationType == typeof(string) && value is Margins)
{
Margins source = value as Margins;
string ret = "{0}; {1}; {2}; {3}";
return String.Format(ret, source.Left, source.Right, source.Top, source.Bottom);
}
if (destinationType == typeof (InstanceDescriptor) && value is Margins) {
Margins c = (Margins) value;
ConstructorInfo ctor = typeof(Margins).GetTypeInfo ().GetConstructor (new Type[] {typeof(int), typeof(int), typeof(int), typeof(int)} );
return new InstanceDescriptor (ctor, new object[] {c.Left, c.Right, c.Top, c.Bottom});
}
return base.ConvertTo(context, culture, value, destinationType);
}
public override bool GetCreateInstanceSupported(ITypeDescriptorContext context)
{
return true;
}
public override object CreateInstance(ITypeDescriptorContext context, System.Collections.IDictionary propertyValues)
{
try
{
Margins margins = new Margins();
margins.Left = int.Parse(propertyValues["Left"].ToString());
margins.Right = int.Parse(propertyValues["Right"].ToString());
margins.Top = int.Parse(propertyValues["Top"].ToString());
margins.Bottom = int.Parse(propertyValues["Bottom"].ToString());
return margins;
}
catch (Exception)
{
// in case of error, return null
return null;
}
}
#endregion
}
}
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