osu/osu.Game.Tournament/JsonPointConverter.cs

71 lines
2.4 KiB
C#

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
#nullable disable
using System;
using System.Diagnostics;
using System.Drawing;
using System.Globalization;
using Newtonsoft.Json;
namespace osu.Game.Tournament
{
/// <summary>
/// We made a change from using SixLabors.ImageSharp.Point to System.Drawing.Point at some stage.
/// This handles converting to a standardised format on json serialize/deserialize operations.
/// </summary>
internal class JsonPointConverter : JsonConverter<Point>
{
public override void WriteJson(JsonWriter writer, Point value, JsonSerializer serializer)
{
// use the format of LaborSharp's Point since it is nicer.
serializer.Serialize(writer, new { value.X, value.Y });
}
public override Point ReadJson(JsonReader reader, Type objectType, Point existingValue, bool hasExistingValue, JsonSerializer serializer)
{
if (reader.TokenType != JsonToken.StartObject)
{
// if there's no object present then this is using string representation (System.Drawing.Point serializes to "x,y")
string str = (string)reader.Value;
Debug.Assert(str != null);
// Null check suppression is required due to .NET standard expecting a non-null context.
// Seems to work fine at a runtime level (and the parameter is nullable in .NET 6+).
return new PointConverter().ConvertFromString(null!, CultureInfo.InvariantCulture, str) as Point? ?? new Point();
}
var point = new Point();
while (reader.Read())
{
if (reader.TokenType == JsonToken.EndObject) break;
if (reader.TokenType == JsonToken.PropertyName)
{
string name = reader.Value?.ToString();
int? val = reader.ReadAsInt32();
if (val == null)
continue;
switch (name)
{
case "X":
point.X = val.Value;
break;
case "Y":
point.Y = val.Value;
break;
}
}
}
return point;
}
}
}