/// <summary>
/// 空构造，背景色、前景色、字体、边距 都为空
/// Initializes a new instance of the CellStyle class with default settings
/// </summary>
public I3CellStyle()
{
this.backColor = Color.Empty;
this.foreColor = Color.Empty;
this.font = null;
this.padding = I3CellPadding.Empty;
}
/// <summary>
/// Converts the given value object to the specified type, using
/// the specified context and culture information
/// </summary>
/// <param name="context">An ITypeDescriptorContext that provides
/// a format context</param>
/// <param name="culture">A CultureInfo object. If a null reference
/// is passed, the current culture is assumed</param>
/// <param name="value">The Object to convert</param>
/// <param name="destinationType">The Type to convert the value
/// parameter to</param>
/// <returns>An Object that represents the converted value</returns>
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
if (destinationType == null)
{
throw new ArgumentNullException("destinationType");
}
if ((destinationType == typeof(string)) && (value is I3CellPadding))
{
I3CellPadding p = (I3CellPadding)value;
if (culture == null)
{
culture = CultureInfo.CurrentCulture;
}
string separator = culture.TextInfo.ListSeparator + " ";
TypeConverter converter = TypeDescriptor.GetConverter(typeof(int));
string[] s = new string[4];
s[0] = converter.ConvertToString(context, culture, p.Left);
s[1] = converter.ConvertToString(context, culture, p.Top);
s[2] = converter.ConvertToString(context, culture, p.Right);
s[3] = converter.ConvertToString(context, culture, p.Bottom);
return(string.Join(separator, s));
}
if ((destinationType == typeof(InstanceDescriptor)) && (value is I3CellPadding))
{
I3CellPadding p = (I3CellPadding)value;
Type[] t = new Type[4];
t[0] = t[1] = t[2] = t[3] = typeof(int);
ConstructorInfo info = typeof(I3CellPadding).GetConstructor(t);
if (info != null)
{
object[] o = new object[4];
o[0] = p.Left;
o[1] = p.Top;
o[2] = p.Right;
o[3] = p.Bottom;
return(new InstanceDescriptor(info, o));
}
}
return(base.ConvertTo(context, culture, value, destinationType));
}
/// <summary>
/// 判断是否与另一个CellPadding的值相等
/// Tests whether obj is a CellPadding structure with the same values as
/// this Padding structure
/// </summary>
/// <param name="obj">The Object to test</param>
/// <returns>This method returns true if obj is a CellPadding structure
/// and its Left, Top, Right, and Bottom properties are equal to
/// the corresponding properties of this CellPadding structure;
/// otherwise, false</returns>
public override bool Equals(object obj)
{
if (!(obj is I3CellPadding))
{
return(false);
}
I3CellPadding padding = (I3CellPadding)obj;
if (((padding.Left == this.Left) && (padding.Top == this.Top)) && (padding.Right == this.Right))
{
return(padding.Bottom == this.Bottom);
}
return(false);
}
