138 lines
4.6 KiB
C#
138 lines
4.6 KiB
C#
//
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// System.Drawing.MarginsConverter.cs
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//
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// Author:
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// Dennis Hayes (dennish@Raytek.com)
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// Herve Poussineau (hpoussineau@fr.st)
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//
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// (C) 2002 Ximian, Inc
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//
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//
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// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.ComponentModel;
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using System.Globalization;
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using System.Text.RegularExpressions;
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using System.ComponentModel.Design.Serialization;
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using System.Reflection;
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namespace System.Drawing.Printing {
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/// <summary>
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/// Summary description for MarginsConverter.
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/// </summary>
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public class MarginsConverter : ExpandableObjectConverter {
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public MarginsConverter() {
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}
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#region Methods
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public override bool CanConvertFrom(ITypeDescriptorContext context,Type sourceType) {
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if (sourceType == typeof(string))
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return true;
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return base.CanConvertFrom(context, sourceType);
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}
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public override bool CanConvertTo(ITypeDescriptorContext context,Type destinationType) {
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if (destinationType == typeof(string))
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return true;
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if (destinationType == typeof (InstanceDescriptor))
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return true;
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return base.CanConvertTo(context, destinationType);
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}
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public override object ConvertFrom(ITypeDescriptorContext context,CultureInfo culture,object value) {
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if (value is string)
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{
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if (value == null)
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return new Margins();
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// format [left];[right];[top];[bottom]
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string separator = @"( |\t)*";
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separator = separator + ";" + separator;
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string regex = @"(?<left>\d+)" + separator + @"(?<right>\d+)" + separator + @"(?<top>\d+)" + separator + @"(?<bottom>\d+)";
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Match match = new Regex(regex).Match(value as string);
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if (!match.Success)
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throw new ArgumentException("value");
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int left, right, top, bottom;
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try
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{
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left = int.Parse(match.Groups["left"].Value);
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right = int.Parse(match.Groups["right"].Value);
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top = int.Parse(match.Groups["top"].Value);
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bottom = int.Parse(match.Groups["bottom"].Value);
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}
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catch (Exception e)
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{
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throw new ArgumentException("value", e);
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}
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return new Margins(left, right, top, bottom);
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} else
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return base.ConvertFrom(context, culture, value);
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}
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public override object ConvertTo(ITypeDescriptorContext context,CultureInfo culture,object value,Type destinationType) {
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if (destinationType == typeof(string) && value is Margins)
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{
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Margins source = value as Margins;
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string ret = "{0}; {1}; {2}; {3}";
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return String.Format(ret, source.Left, source.Right, source.Top, source.Bottom);
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}
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if (destinationType == typeof (InstanceDescriptor) && value is Margins) {
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Margins c = (Margins) value;
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ConstructorInfo ctor = typeof(Margins).GetTypeInfo ().GetConstructor (new Type[] {typeof(int), typeof(int), typeof(int), typeof(int)} );
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return new InstanceDescriptor (ctor, new object[] {c.Left, c.Right, c.Top, c.Bottom});
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}
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return base.ConvertTo(context, culture, value, destinationType);
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}
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public override bool GetCreateInstanceSupported(ITypeDescriptorContext context)
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{
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return true;
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}
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public override object CreateInstance(ITypeDescriptorContext context, System.Collections.IDictionary propertyValues)
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{
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try
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{
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Margins margins = new Margins();
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margins.Left = int.Parse(propertyValues["Left"].ToString());
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margins.Right = int.Parse(propertyValues["Right"].ToString());
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margins.Top = int.Parse(propertyValues["Top"].ToString());
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margins.Bottom = int.Parse(propertyValues["Bottom"].ToString());
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return margins;
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}
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catch (Exception)
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{
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// in case of error, return null
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return null;
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}
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}
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#endregion
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}
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}
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