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Former-commit-id: 249d2715f40b60384076d3710d91070ed5342db6 Former-commit-id: f339fc46f58eca21106100cf918416a703e7ff7b Former-commit-id: d3d169819d61c264bd9564263b87c88772b5fda6af/merge-core
James South
11 years ago
20 changed files with 452 additions and 599 deletions
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// --------------------------------------------------------------------------------------------------------------------
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// <copyright file="FontFamilyConverter.cs" company="James South">
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// Copyright (c) James South.
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// Licensed under the Apache License, Version 2.0.
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// </copyright>
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// <summary>
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// FontFamilyConverter - converter class for converting between the <see cref="FontFamily" />
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// and <see cref="String" /> types.
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// </summary>
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// --------------------------------------------------------------------------------------------------------------------
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namespace ImageProcessor.Web.Helpers |
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{ |
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using System; |
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using System.ComponentModel; |
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using System.Drawing; |
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using System.Globalization; |
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/// <summary>
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/// FontFamilyConverter - converter class for converting between the <see cref="FontFamily"/>
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/// and <see cref="String"/> types.
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/// </summary>
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public class FontFamilyConverter : TypeConverter |
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{ |
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/// <summary>
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/// Returns whether this converter can convert an object of the given type to the type of
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/// this converter, using the specified context.
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/// </summary>
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/// <returns>
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/// true if this converter can perform the conversion; otherwise, false.
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/// </returns>
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/// <param name="context">
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/// An <see cref="T:System.ComponentModel.ITypeDescriptorContext"/> that provides a format context.
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/// </param>
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/// <param name="sourceType">
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/// A <see cref="T:System.Type"/> that represents the type you want to convert from.
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/// </param>
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public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) |
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{ |
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if (sourceType == typeof(string)) |
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{ |
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return true; |
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} |
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return base.CanConvertFrom(context, sourceType); |
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} |
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/// <summary>
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/// Returns whether this converter can convert the object to the specified type, using
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/// the specified context.
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/// </summary>
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/// <returns>
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/// true if this converter can perform the conversion; otherwise, false.
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/// </returns>
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/// <param name="context">
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/// An <see cref="T:System.ComponentModel.ITypeDescriptorContext"/> that provides a format context.
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/// </param>
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/// <param name="destinationType">
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/// A <see cref="T:System.Type"/> that represents the type you want to convert to.
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/// </param>
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public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) |
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{ |
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if (destinationType == typeof(string) || destinationType == typeof(FontFamily)) |
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{ |
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return true; |
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} |
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return base.CanConvertTo(context, destinationType); |
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} |
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/// <summary>
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/// Converts the given object to the type of this converter, using the specified context and
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/// culture information.
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/// </summary>
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/// <returns>
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/// An <see cref="T:System.Object"/> that represents the converted value.
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/// </returns>
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/// <param name="context">
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/// An <see cref="T:System.ComponentModel.ITypeDescriptorContext"/> that provides a format context.
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/// </param>
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/// <param name="culture">
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/// The <see cref="T:System.Globalization.CultureInfo"/> to use as the current culture.
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/// </param>
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/// <param name="value">The <see cref="T:System.Object"/> to convert. </param>
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/// <exception cref="T:System.NotSupportedException">The conversion cannot be performed. </exception>
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public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) |
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{ |
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string s = value as string; |
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if (!string.IsNullOrWhiteSpace(s)) |
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{ |
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return new FontFamily(s); |
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} |
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return base.ConvertFrom(context, culture, value); |
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} |
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/// <summary>
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/// Converts the given value object to the specified type, using the specified context and culture
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/// information.
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/// </summary>
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/// <returns>
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/// An <see cref="T:System.Object"/> that represents the converted value.
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/// </returns>
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/// <param name="context">
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/// An <see cref="T:System.ComponentModel.ITypeDescriptorContext"/> that provides a format context.
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/// </param>
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/// <param name="culture">
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/// A <see cref="T:System.Globalization.CultureInfo"/>. If null is passed, the current culture is assumed.
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/// </param><param name="value">The <see cref="T:System.Object"/> to convert. </param>
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/// <param name="destinationType">
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/// The <see cref="T:System.Type"/> to convert the <paramref name="value"/> parameter to.
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/// </param>
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/// <exception cref="T:System.ArgumentNullException">The <paramref name="destinationType"/> parameter is null. </exception>
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/// <exception cref="T:System.NotSupportedException">The conversion cannot be performed. </exception>
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public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) |
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{ |
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if (null == value) |
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{ |
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throw new ArgumentNullException("value"); |
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} |
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FontFamily fontFamily = value as FontFamily; |
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if (fontFamily == null) |
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{ |
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throw new ArgumentException("value"); |
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} |
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if (null == destinationType) |
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{ |
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throw new ArgumentNullException("destinationType"); |
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} |
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if (destinationType == typeof(string)) |
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{ |
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return fontFamily.Name; |
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} |
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return base.ConvertTo(context, culture, value, destinationType); |
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} |
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} |
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} |
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