Initial commit of News indicator
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indicators/News.cs
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348
indicators/News.cs
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#region Using declarations
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.ComponentModel.DataAnnotations;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Input;
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using System.Windows.Media;
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using System.Xml.Serialization;
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using NinjaTrader.Cbi;
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using NinjaTrader.Gui;
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using NinjaTrader.Gui.Chart;
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using NinjaTrader.Gui.SuperDom;
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using NinjaTrader.Gui.Tools;
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using NinjaTrader.Data;
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using NinjaTrader.NinjaScript;
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using NinjaTrader.Core.FloatingPoint;
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using NinjaTrader.NinjaScript.DrawingTools;
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using System.Net.Http;
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using SharpDX.DirectWrite;
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using SharpDX;
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using System.Xml.Linq;
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using System.Xml;
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using System.Text.RegularExpressions;
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using System.Windows.Markup;
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#endregion
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//This namespace holds Indicators in this folder and is required. Do not change it.
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namespace NinjaTrader.NinjaScript.Indicators
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{
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public class NewsEvent
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{
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public string Time { get; set; }
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public string Currency { get; set; }
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public string Title { get; set; }
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}
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public class News : Indicator
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{
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// TODO: Date should be determined programatically.
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private string newsUrl = "https://www.forexfactory.com/calendar?day=" + DateTime.Now.ToString("MMMdd.yyyy").ToLower();
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private List<NewsEvent> newsEvents = new List<NewsEvent>();
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protected override void OnStateChange()
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{
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if (State == State.SetDefaults)
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{
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Description = @"Displays economic news events for the current day on the chart";
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Name = "News";
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Calculate = Calculate.OnBarClose;
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IsOverlay = true;
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ScaleJustification = ScaleJustification.Right;
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IsSuspendedWhileInactive = true;
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HeaderColor = Brushes.Yellow;
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HeaderTextColor = Brushes.Black;
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EventTextColor = Brushes.White;
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HeaderFont = new SimpleFont("Arial", 12);
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EventFont = new SimpleFont("Arial", 12);
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HorizontalPadding = 20;
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VerticalPadding = 5;
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YOffset = 0;
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}
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else if (State == State.Configure)
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{
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RequestNewsEvents();
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}
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else if (State == State.Historical)
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{
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SetZOrder(-1); // Display behind bars on chart.
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}
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}
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private async void RequestNewsEvents()
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{
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try
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{
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HttpClient client = new HttpClient();
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client.DefaultRequestHeaders.UserAgent.ParseAdd("Mozilla/5.0 (Windows NT 10.0; Win64; x64)");
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HttpResponseMessage response = await client.GetAsync(newsUrl);
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response.EnsureSuccessStatusCode();
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string responseBody = await response.Content.ReadAsStringAsync();
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ParseNewsEvents(responseBody);
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ForceRefresh();
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}
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catch (Exception e)
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{
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Print("Error loading news events: " + e.Message);
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}
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}
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private void ParseNewsEvents(string html)
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{
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try
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{
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// Regex to match the rows with class "calendar__row"
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var rowRegex = new Regex(@"<tr[^>]*class=""[^""]*calendar__row[^""]*""[^>]*>(.*?)</tr>", RegexOptions.Singleline);
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// Regex to extract time and title from the row
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var timeRegex = new Regex(@"<td[^>]*class=""[^""]*calendar__time[^""]*""[^>]*>(.*?)</td>", RegexOptions.Singleline);
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var currencyRegex = new Regex(@"<td[^>]*class=""[^""]*calendar__currency[^""]*""[^>]*>(.*?)</td>", RegexOptions.Singleline);
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var titleRegex = new Regex(@"<span[^>]*class=""[^""]*calendar__event-title[^""]*""[^>]*>(.*?)</span>", RegexOptions.Singleline);
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var rowMatches = rowRegex.Matches(html);
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foreach (Match rowMatch in rowMatches)
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{
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string rowContent = rowMatch.Groups[1].Value;
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var timeMatch = timeRegex.Match(rowContent);
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var currencyMatch = currencyRegex.Match(rowContent);
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var titleMatch = titleRegex.Match(rowContent);
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if (timeMatch.Success && titleMatch.Success)
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{
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string time = timeMatch.Groups[1].Value.Trim();
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string currency = currencyMatch.Groups[1].Value.Trim();
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string title = titleMatch.Groups[1].Value.Trim();
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// Remove any extraneous HTML tags from the time string
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time = Regex.Replace(time, "<.*?>", string.Empty);
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newsEvents.Add(new NewsEvent { Time = time, Currency = currency, Title = title });
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}
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}
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}
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catch (Exception ex)
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{
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Print("Error parsing news events: " + ex.Message);
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}
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}
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protected override void OnBarUpdate() { }
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protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
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{
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base.OnRender(chartControl, chartScale);
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int maxColWidth = 0;
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int maxHeaderHeight = 0;
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int maxRowHeight = 0;
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// Determine maximum column width and row height.
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using (TextFormat headerTextFormat = HeaderFont.ToDirectWriteTextFormat(),
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eventTextFormat = EventFont.ToDirectWriteTextFormat())
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{
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var headerSize = MeasureString("Time", headerTextFormat);
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maxColWidth = Math.Max(maxColWidth, headerSize.Width);
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maxHeaderHeight = Math.Max(maxHeaderHeight, headerSize.Height);
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headerSize = MeasureString("Currency", headerTextFormat);
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maxColWidth = Math.Max(maxColWidth, headerSize.Width);
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headerSize = MeasureString("Event", headerTextFormat);
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maxColWidth = Math.Max(maxColWidth, headerSize.Width);
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foreach (var newsEvent in newsEvents)
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{
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var timeSize = MeasureString(newsEvent.Time, eventTextFormat);
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var currencySize = MeasureString(newsEvent.Currency, eventTextFormat);
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var titleSize = MeasureString(newsEvent.Title, eventTextFormat);
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maxColWidth = Math.Max(maxColWidth, Math.Max(timeSize.Width, Math.Max(currencySize.Width, titleSize.Width)));
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maxRowHeight = Math.Max(maxRowHeight, Math.Max(timeSize.Height, Math.Max(currencySize.Height, titleSize.Height)));
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}
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}
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maxColWidth += HorizontalPadding * 2;
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int headerHeight = maxHeaderHeight + (VerticalPadding * 2);
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int rowHeight = maxRowHeight + (VerticalPadding * 2);
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int x = ChartPanel.W - (maxColWidth * 3) - HorizontalPadding;
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int y = YOffset;
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// Draw header row.
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using (TextFormat headerTextFormat = HeaderFont.ToDirectWriteTextFormat())
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{
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string[] headers = { "Time", "Currency", "Event" };
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foreach (var header in headers)
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{
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RectangleF headerRect = new RectangleF(x, y, maxColWidth, headerHeight);
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RenderTarget.FillRectangle(headerRect, HeaderColor.ToDxBrush(RenderTarget));
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var size = MeasureString(header, headerTextFormat);
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int textX = x + (maxColWidth - size.Width) / 2; // Center the text horizontally.
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int textY = y + (headerHeight - size.Height) / 2; // Center the text vertically.
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DrawText(header, textX, textY, HeaderTextColor, headerTextFormat, headerHeight);
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x += maxColWidth;
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}
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}
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// Reset x coordinate for news events.
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x = ChartPanel.W - (maxColWidth * 3) - HorizontalPadding;
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y += headerHeight;
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// Draw news events.
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using (TextFormat eventTextFormat = EventFont.ToDirectWriteTextFormat())
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{
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foreach (var newsEvent in newsEvents)
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{
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var timeSize = MeasureString(newsEvent.Time, eventTextFormat);
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var currencySize = MeasureString(newsEvent.Currency, eventTextFormat);
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var titleSize = MeasureString(newsEvent.Title, eventTextFormat);
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RectangleF timeRect = new RectangleF(x, y, maxColWidth, rowHeight);
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DrawText(newsEvent.Time, x + (maxColWidth - timeSize.Width) / 2, y + (rowHeight - timeSize.Height) / 2, EventTextColor, eventTextFormat, rowHeight);
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x += maxColWidth;
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RectangleF currencyRect = new RectangleF(x, y, maxColWidth, rowHeight);
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DrawText(newsEvent.Currency, x + (maxColWidth - currencySize.Width) / 2, y + (rowHeight - currencySize.Height) / 2, EventTextColor, eventTextFormat, rowHeight);
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x += maxColWidth;
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RectangleF titleRect = new RectangleF(x, y, maxColWidth, rowHeight);
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DrawText(newsEvent.Title, x + (maxColWidth - titleSize.Width) / 2, y + (rowHeight - titleSize.Height) / 2, EventTextColor, eventTextFormat, rowHeight);
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x = ChartPanel.W - (maxColWidth * 3) - HorizontalPadding;
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y += rowHeight;
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}
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}
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}
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private Size2 MeasureString(string text, TextFormat textFormat)
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{
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using (var textLayout = new TextLayout(Core.Globals.DirectWriteFactory, text, textFormat, float.PositiveInfinity, float.PositiveInfinity))
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{
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return new Size2((int)Math.Ceiling(textLayout.Metrics.Width), (int)Math.Ceiling(textLayout.Metrics.Height));
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}
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}
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private void DrawText(string text, int x, int y, Brush brush, TextFormat textFormat, int height)
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{
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TextLayout textLayout = new TextLayout(Core.Globals.DirectWriteFactory, text, textFormat, 500, height);
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Vector2 textOrigin = new Vector2(x, y);
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RenderTarget.DrawTextLayout(textOrigin, textLayout, brush.ToDxBrush(RenderTarget));
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textLayout.Dispose();
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}
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public override string DisplayName
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{
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get { return Name; }
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}
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#region Properties
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[NinjaScriptProperty]
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[XmlIgnore]
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[Display(Name = "Header Row", GroupName = "News", Order = 1)]
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public Brush HeaderColor { get; set; }
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[NinjaScriptProperty]
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[XmlIgnore]
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[Display(Name = "Header Text", GroupName = "News", Order = 2)]
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public Brush HeaderTextColor { get; set; }
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[NinjaScriptProperty]
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[XmlIgnore]
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[Display(Name = "Event Text", GroupName = "News", Order = 3)]
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public Brush EventTextColor { get; set; }
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[NinjaScriptProperty]
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[Range(0, int.MaxValue)]
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[Display(Name = "Horizontal Padding", GroupName = "News", Order = 4)]
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public int HorizontalPadding { get; set; }
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[NinjaScriptProperty]
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[Range(0, int.MaxValue)]
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[Display(Name = "Vertical Padding", GroupName = "News", Order = 5)]
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public int VerticalPadding { get; set; }
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[NinjaScriptProperty]
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[Range(0, int.MaxValue)]
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[Display(Name = "Y-Offset", GroupName = "News", Order = 6)]
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public int YOffset { get; set; }
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[NinjaScriptProperty]
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[Display(Name = "Header Font", GroupName = "News", Order = 7)]
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public SimpleFont HeaderFont { get; set; }
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[NinjaScriptProperty]
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[Display(Name = "Event Font", GroupName = "News", Order = 8)]
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public SimpleFont EventFont { get; set; }
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#endregion
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}
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}
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#region NinjaScript generated code. Neither change nor remove.
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namespace NinjaTrader.NinjaScript.Indicators
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{
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public partial class Indicator : NinjaTrader.Gui.NinjaScript.IndicatorRenderBase
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{
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private News[] cacheNews;
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public News News(Brush headerColor, Brush headerTextColor, Brush eventTextColor, int horizontalPadding, int verticalPadding, int yOffset, SimpleFont headerFont, SimpleFont eventFont)
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{
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return News(Input, headerColor, headerTextColor, eventTextColor, horizontalPadding, verticalPadding, yOffset, headerFont, eventFont);
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}
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public News News(ISeries<double> input, Brush headerColor, Brush headerTextColor, Brush eventTextColor, int horizontalPadding, int verticalPadding, int yOffset, SimpleFont headerFont, SimpleFont eventFont)
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{
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if (cacheNews != null)
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for (int idx = 0; idx < cacheNews.Length; idx++)
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if (cacheNews[idx] != null && cacheNews[idx].HeaderColor == headerColor && cacheNews[idx].HeaderTextColor == headerTextColor && cacheNews[idx].EventTextColor == eventTextColor && cacheNews[idx].HorizontalPadding == horizontalPadding && cacheNews[idx].VerticalPadding == verticalPadding && cacheNews[idx].YOffset == yOffset && cacheNews[idx].HeaderFont == headerFont && cacheNews[idx].EventFont == eventFont && cacheNews[idx].EqualsInput(input))
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return cacheNews[idx];
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return CacheIndicator<News>(new News(){ HeaderColor = headerColor, HeaderTextColor = headerTextColor, EventTextColor = eventTextColor, HorizontalPadding = horizontalPadding, VerticalPadding = verticalPadding, YOffset = yOffset, HeaderFont = headerFont, EventFont = eventFont }, input, ref cacheNews);
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}
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}
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}
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namespace NinjaTrader.NinjaScript.MarketAnalyzerColumns
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{
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public partial class MarketAnalyzerColumn : MarketAnalyzerColumnBase
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{
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public Indicators.News News(Brush headerColor, Brush headerTextColor, Brush eventTextColor, int horizontalPadding, int verticalPadding, int yOffset, SimpleFont headerFont, SimpleFont eventFont)
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{
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return indicator.News(Input, headerColor, headerTextColor, eventTextColor, horizontalPadding, verticalPadding, yOffset, headerFont, eventFont);
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}
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public Indicators.News News(ISeries<double> input , Brush headerColor, Brush headerTextColor, Brush eventTextColor, int horizontalPadding, int verticalPadding, int yOffset, SimpleFont headerFont, SimpleFont eventFont)
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{
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return indicator.News(input, headerColor, headerTextColor, eventTextColor, horizontalPadding, verticalPadding, yOffset, headerFont, eventFont);
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}
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}
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}
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namespace NinjaTrader.NinjaScript.Strategies
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{
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public partial class Strategy : NinjaTrader.Gui.NinjaScript.StrategyRenderBase
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{
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public Indicators.News News(Brush headerColor, Brush headerTextColor, Brush eventTextColor, int horizontalPadding, int verticalPadding, int yOffset, SimpleFont headerFont, SimpleFont eventFont)
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{
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return indicator.News(Input, headerColor, headerTextColor, eventTextColor, horizontalPadding, verticalPadding, yOffset, headerFont, eventFont);
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}
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public Indicators.News News(ISeries<double> input , Brush headerColor, Brush headerTextColor, Brush eventTextColor, int horizontalPadding, int verticalPadding, int yOffset, SimpleFont headerFont, SimpleFont eventFont)
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{
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return indicator.News(input, headerColor, headerTextColor, eventTextColor, horizontalPadding, verticalPadding, yOffset, headerFont, eventFont);
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}
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}
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}
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#endregion
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