ant-design-blazor/components/core/CssSizeLength.cs

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2.5 KiB
C#
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using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
namespace AntDesign
{
internal enum CssSizeLengthUnit
{
Px,
Cm,
Mm,
In,
Pt,
Pc,
Em,
Rem,
Percent,
Vh,
Vw,
Vmin,
Vmax,
Fr,
}
public readonly struct CssSizeLength : IEquatable<CssSizeLength>
{
private readonly int _value;
private readonly CssSizeLengthUnit _unit;
public override string ToString() => _value.ToString(CultureInfo.InvariantCulture) + _unit switch
{
CssSizeLengthUnit.Percent => "%",
_ => Enum.GetName(typeof(CssSizeLengthUnit), _unit).ToLowerInvariant()
};
private CssSizeLength(int value, CssSizeLengthUnit unit)
{
_value = value;
_unit = unit;
}
public CssSizeLength(int value) : this(value, CssSizeLengthUnit.Px)
{
}
public CssSizeLength(string value)
{
value = value?.ToLowerInvariant() ?? throw new ArgumentNullException(nameof(value));
var index = value
.Select((c, i) => ((char c, int i)?)(c, i))
.FirstOrDefault(x => !(x.Value.c == '.' || x.Value.c >= '0' && x.Value.c <= '9'))
?.i
?? value.Length;
if (index == 0)
{
throw new FormatException();
}
_value = int.Parse(value.Substring(0, index), CultureInfo.InvariantCulture);
if (index == value.Length)
{
_unit = CssSizeLengthUnit.Px;
return;
}
if (!Enum.TryParse(value.Substring(index).Trim(), ignoreCase: true, out _unit))
{
throw new FormatException();
}
}
public static implicit operator CssSizeLength(int value) => new CssSizeLength(value);
public static implicit operator CssSizeLength(string value) => new CssSizeLength(value);
public override bool Equals(object obj) => obj is CssSizeLength other && Equals(other);
public override int GetHashCode() => HashCode.Combine(_value, _unit);
public static bool operator ==(CssSizeLength left, CssSizeLength right) => left.Equals(right);
public static bool operator !=(CssSizeLength left, CssSizeLength right) => !(left == right);
public bool Equals(CssSizeLength other) => other._value == _value && other._unit == _unit;
}
}