private async void CreateChart()
{
var pair = (Сurrency.SelectedItem as ComboBoxItem).Content.ToString();
if (string.IsNullOrEmpty(Interval.Text))
{
return;
}
var interval = Convert.ToInt32(Interval.Text);
if (string.IsNullOrEmpty(pair) || interval < 1)
{
return;
}
var result = new OHLCResult();
var endTime = DatePickerEnd.SelectedDate.Value.Millisecond;
if (!Enum.IsDefined(typeof(Minutes), interval))
{
result = await KrakenManager.GetOHLC(pair, 1, endTime);
result.Pairs[pair] = Helper.CompressDate(result.Pairs[pair], interval);
}
else
{
result = await KrakenManager.GetOHLC(pair, interval, endTime);
}
var chart = new Chart(result, pair, endTime: endTime);
AddChartToForm(chart);
}
public Chart(OHLCResult result, string pair, int beginTime = 0, int endTime = 0)
{
Model = CreatePlotModel(result, pair);
Pair = pair;
OHLCResult = result;
OHLCListBeginer = result.Pairs[pair];
EndTime = endTime;
BeginTime = beginTime;
}
public async Task <OHLCResult> GetOHLC(string pair, int interval = 1, long since = 0)
{
var param = new Dictionary <string, string>();
param.Add("pair", pair);
param.Add("since", since.ToString());
param.Add("interval", interval.ToString());
var res = await QueryPublic("OHLC", param);
JObject obj = (JObject)JsonConvert.DeserializeObject(res);
JArray err = (JArray)obj["error"];
if (err.Count != 0)
{
throw new KrakenException(err[0].ToString(), JsonConvert.DeserializeObject <ResponseBase>(res));
}
JObject result = obj["result"].Value <JObject>();
var ret = new OHLCResult();
ret.Pairs = new Dictionary <string, List <OHLC> >();
foreach (var o in result)
{
if (o.Key == "last")
{
ret.Last = o.Value.Value <long>();
}
else
{
var ohlc = new List <OHLC>();
foreach (var v in o.Value.ToObject <decimal[][]>())
{
ohlc.Add(new OHLC()
{
Time = (int)v[0], Open = v[1], High = v[2], Low = v[3], Close = v[4], Vwap = v[5], Volume = v[6], Count = (int)v[7]
});
}
ret.Pairs.Add(o.Key, ohlc);
}
}
return(ret);
}
private PlotModel CreatePlotModel(OHLCResult result, string pair)
{
var tmpModel = new PlotModel {
Title = "Chart", Subtitle = pair
};
//tmpModel.ZoomAllAxes(0);
DateTimeAxis timeSPanAxis1 = new DateTimeAxis()
{
Position = AxisPosition.Bottom,
MinorIntervalType = DateTimeIntervalType.Auto,
MajorGridlineStyle = LineStyle.Dot,
MinorGridlineStyle = LineStyle.Dot,
MajorGridlineColor = OxyColor.FromRgb(44, 44, 44),
TicklineColor = OxyColor.FromRgb(82, 82, 82)
};
tmpModel.Axes.Add(timeSPanAxis1);
LinearAxis YAxisRight = new LinearAxis()
{
Position = AxisPosition.Right,
Minimum = GetMinValueY(result, pair),
Maximum = GetMaxValueY(result, pair),
StartPosition = 0,
Selectable = true,
MajorGridlineStyle = LineStyle.Dot,
MinorGridlineStyle = LineStyle.Dot,
MajorGridlineColor = OxyColor.FromRgb(44, 44, 44),
TicklineColor = OxyColor.FromRgb(82, 82, 82)
};
LinearAxis XAxisBottom = new LinearAxis()
{
Position = AxisPosition.Bottom,
StartPosition = 0,
MajorGridlineStyle = LineStyle.Dot,
MinorGridlineStyle = LineStyle.Dot,
MajorGridlineColor = OxyColor.FromRgb(44, 44, 44),
TicklineColor = OxyColor.FromRgb(82, 82, 82)
};
tmpModel.Axes.Add(YAxisRight);
tmpModel.Axes.Add(XAxisBottom);
CandleStickSeries candle = new CandleStickSeries()
{
Color = OxyColors.Black,
IncreasingColor = OxyColor.FromRgb(0, 197, 49),
DecreasingColor = OxyColor.FromRgb(255, 95, 95),
DataFieldX = "Time",
DataFieldHigh = "H",
DataFieldLow = "L",
DataFieldClose = "C",
DataFieldOpen = "O",
TrackerFormatString = "Date: {2}\nOpen: {5:0.00000}\nHigh: {3:0.00000}\nLow: {4:0.00000}\nClose: {6:0.00000}",
};
var points = new LineSeries {
Title = "Series 1", MarkerType = MarkerType.Circle
};
candle.AddToHighLowSeries(result.Pairs[pair]);
//candle.Tag = result.Pairs[pair];
// tmp.Series.Add(points);
tmpModel.Series.Add(candle);
return(tmpModel);
}
private double GetMinValueX(OHLCResult result, string pair)
{
return((double)result.Pairs[pair].First().Time);
}
private double GetMinValueY(OHLCResult result, string pair)
{
return((double)result.Pairs[pair].Min(m => m.Low));
}
