811 lines
32 KiB
JavaScript
811 lines
32 KiB
JavaScript
function newCandlesPlottersCandlesVolumesCandles() {
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const MODULE_NAME = "Candles Plotter";
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const ERROR_LOG = true;
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const INTENSIVE_LOG = false;
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const logger = newWebDebugLog();
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let thisObject = {
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initialize: initialize,
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finalize: finalize,
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container: undefined,
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fitFunction: undefined,
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getContainer: getContainer,
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setTimeFrame: setTimeFrame,
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setDatetime: setDatetime,
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setCoordinateSystem: setCoordinateSystem,
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draw: draw,
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onDailyFileLoaded: onDailyFileLoaded,
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currentCandle: undefined
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};
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/* this is part of the module template */
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thisObject.container = newContainer()
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thisObject.container.initialize(MODULE_NAME)
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let coordinateSystem
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let timeFrame; // This will hold the current Time Frame the user is at.
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let datetime; // This will hold the current Datetime the user is at.
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let marketFile; // This is the current Market File being plotted.
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let fileCursor; // This is the current File Cursor being used to retrieve Daily Files.
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let marketFiles; // This object will provide the different Market Files at different Time Frames.
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let dailyFiles; // This object will provide the different File Cursors at different Time Frames.
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/* these are module specific variables: */
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let candles = []; // Here we keep the candles to be plotted every time the Draw() function is called by the AAWebPlatform.
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let onMouseOverEventSuscriptionId
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let zoomChangedEventSubscriptionId
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let offsetChangedEventSubscriptionId
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let dragFinishedEventSubscriptionId
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let dimmensionsChangedEventSubscriptionId
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let marketFilesUpdatedEventSubscriptionId
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let dailyFilesUpdatedEventSubscriptionId
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let scaleChangedEventSubscriptionId
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let userPositionDate
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return thisObject;
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function finalize() {
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try {
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/* Stop listening to the necessary events. */
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thisObject.container.eventHandler.stopListening(onMouseOverEventSuscriptionId)
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UI.projects.foundations.spaces.chartingSpace.viewport.eventHandler.stopListening(zoomChangedEventSubscriptionId);
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UI.projects.foundations.spaces.chartingSpace.viewport.eventHandler.stopListening(offsetChangedEventSubscriptionId);
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canvas.eventHandler.stopListening(dragFinishedEventSubscriptionId);
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thisObject.container.eventHandler.stopListening(dimmensionsChangedEventSubscriptionId)
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marketFiles.eventHandler.stopListening(marketFilesUpdatedEventSubscriptionId);
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dailyFiles.eventHandler.stopListening(dailyFilesUpdatedEventSubscriptionId);
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/* Destroyed References */
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marketFiles = undefined;
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dailyFiles = undefined;
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datetime = undefined;
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timeFrame = undefined;
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marketFile = undefined;
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fileCursor = undefined;
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thisObject.fitFunction = undefined
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finalizeCoordinateSystem()
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coordinateSystem = undefined
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} catch (err) {
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if (ERROR_LOG === true) { logger.write("[ERROR] finalize -> err = " + err.stack); }
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}
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}
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function initialize(pStorage, pDatetime, pTimeFrame, pCoordinateSystem, callBackFunction) {
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try {
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/* Store the information received. */
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marketFiles = pStorage.marketFiles[0];
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dailyFiles = pStorage.dailyFiles[0];
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datetime = pDatetime;
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timeFrame = pTimeFrame;
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coordinateSystem = pCoordinateSystem
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initializeCoordinateSystem()
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/* We need a Market File in order to calculate the Y scale, since this scale depends on actual data. */
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marketFile = marketFiles.getFile(ONE_DAY_IN_MILISECONDS); // This file is the one processed faster.
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/* Now we set the right files according to current Time Frame. */
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marketFile = marketFiles.getFile(pTimeFrame);
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fileCursor = dailyFiles.getFileCursor(pTimeFrame);
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/* Listen to the necessary events. */
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zoomChangedEventSubscriptionId = UI.projects.foundations.spaces.chartingSpace.viewport.eventHandler.listenToEvent("Zoom Changed", onViewportZoomChanged);
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offsetChangedEventSubscriptionId = UI.projects.foundations.spaces.chartingSpace.viewport.eventHandler.listenToEvent("Position Changed", onViewportPositionChanged);
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dragFinishedEventSubscriptionId = canvas.eventHandler.listenToEvent("Drag Finished", onDragFinished);
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marketFilesUpdatedEventSubscriptionId = marketFiles.eventHandler.listenToEvent("Files Updated", onMarketFilesUpdated);
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dailyFilesUpdatedEventSubscriptionId = dailyFiles.eventHandler.listenToEvent("Files Updated", onDailyFilesUpdated);
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onMouseOverEventSuscriptionId = thisObject.container.eventHandler.listenToEvent('onMouseOver', onMouseOver)
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/* Get ready for plotting. */
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recalculate();
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dimmensionsChangedEventSubscriptionId = thisObject.container.eventHandler.listenToEvent('Dimmensions Changed', function () {
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recalculate();
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})
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callBackFunction();
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} catch (err) {
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if (ERROR_LOG === true) { logger.write("[ERROR] initialize -> err = " + err.stack); }
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}
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}
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function initializeCoordinateSystem() {
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scaleChangedEventSubscriptionId = coordinateSystem.eventHandler.listenToEvent('Scale Changed', onScaleChanged)
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}
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function finalizeCoordinateSystem() {
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coordinateSystem.eventHandler.stopListening(scaleChangedEventSubscriptionId)
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}
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function onScaleChanged() {
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recalculate();
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}
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function onMouseOver(event) {
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let userPosition = UI.projects.foundations.utilities.dateRateTransformations.getDateFromPointAtBrowserCanvas(event, thisObject.container, coordinateSystem)
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userPositionDate = userPosition.valueOf()
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}
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function getContainer(point) {
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try {
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let container;
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/* First we check if this point is inside this space. */
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if (thisObject.container.frame.isThisPointHere(point) === true) {
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return thisObject.container;
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} else {
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/* This point does not belong to this space. */
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return undefined;
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}
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} catch (err) {
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if (ERROR_LOG === true) { logger.write("[ERROR] getContainer -> err = " + err.stack); }
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}
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}
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function onMarketFilesUpdated() {
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try {
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let newMarketFile = marketFiles.getFile(timeFrame);
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if (newMarketFile !== undefined) {
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marketFile = newMarketFile;
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recalculate();
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}
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} catch (err) {
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if (ERROR_LOG === true) { logger.write("[ERROR] onMarketFilesUpdated -> err = " + err.stack); }
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}
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}
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function onDailyFilesUpdated() {
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try {
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let newFileCursor = dailyFiles.getFileCursor(timeFrame);
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if (newFileCursor !== undefined) {
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fileCursor = newFileCursor;
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recalculate();
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}
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} catch (err) {
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if (ERROR_LOG === true) { logger.write("[ERROR] onDailyFilesUpdated -> err = " + err.stack); }
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}
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}
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function setTimeFrame(pTimeFrame) {
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try {
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if (timeFrame !== pTimeFrame) {
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timeFrame = pTimeFrame;
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if (timeFrame >= _1_HOUR_IN_MILISECONDS) {
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let newMarketFile = marketFiles.getFile(pTimeFrame);
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if (newMarketFile !== undefined) {
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marketFile = newMarketFile;
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recalculate();
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}
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} else {
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let newFileCursor = dailyFiles.getFileCursor(pTimeFrame);
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if (newFileCursor !== undefined) {
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fileCursor = newFileCursor;
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recalculate();
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}
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}
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}
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} catch (err) {
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if (ERROR_LOG === true) { logger.write("[ERROR] setTimeFrame -> err = " + err.stack); }
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}
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}
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function setDatetime(pDatetime) {
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datetime = pDatetime;
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}
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function setCoordinateSystem(pCoordinateSystem) {
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finalizeCoordinateSystem()
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coordinateSystem = pCoordinateSystem
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initializeCoordinateSystem()
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}
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function onDailyFileLoaded(event) {
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try {
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if (event.currentValue === event.totalValue) {
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/* This happens only when all of the files in the cursor have been loaded. */
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recalculate();
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}
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} catch (err) {
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if (ERROR_LOG === true) { logger.write("[ERROR] onDailyFileLoaded -> err = " + err.stack); }
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}
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}
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function draw() {
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try {
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if (INTENSIVE_LOG === true) { logger.write("[INFO] draw -> Entering function."); }
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thisObject.container.frame.draw();
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return plotChart();
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} catch (err) {
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if (ERROR_LOG === true) { logger.write("[ERROR] draw -> err = " + err.stack); }
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}
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}
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function recalculate() {
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try {
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if (timeFrame >= _1_HOUR_IN_MILISECONDS) {
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recalculateUsingMarketFiles();
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} else {
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recalculateUsingDailyFiles();
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}
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thisObject.container.eventHandler.raiseEvent("Candles Changed", candles);
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} catch (err) {
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if (ERROR_LOG === true) { logger.write("[ERROR] recalculate -> err = " + err.stack); }
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}
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}
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function recalculateUsingDailyFiles() {
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try {
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if (fileCursor === undefined) { return; } // We need to wait
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if (fileCursor.files.size === 0) { return; } // We need to wait until there are files in the cursor
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let daysOnSides = getSideDays(timeFrame);
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let leftDate = UI.projects.foundations.utilities.dateRateTransformations.getDateFromPointAtBrowserCanvas(UI.projects.foundations.spaces.chartingSpace.viewport.visibleArea.topLeft, thisObject.container, coordinateSystem);
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let rightDate = UI.projects.foundations.utilities.dateRateTransformations.getDateFromPointAtBrowserCanvas(UI.projects.foundations.spaces.chartingSpace.viewport.visibleArea.topRight, thisObject.container, coordinateSystem);
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let dateDiff = rightDate.valueOf() - leftDate.valueOf();
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let farLeftDate = new Date(leftDate.valueOf() - dateDiff * 1.5);
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let farRightDate = new Date(rightDate.valueOf() + dateDiff * 1.5);
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let currentDate = new Date(farLeftDate.valueOf());
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candles = [];
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while (currentDate.valueOf() <= farRightDate.valueOf() + ONE_DAY_IN_MILISECONDS) {
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let stringDate = currentDate.getUTCFullYear() + '-' + pad(currentDate.getUTCMonth() + 1, 2) + '-' + pad(currentDate.getUTCDate(), 2);
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let dailyFile = fileCursor.files.get(stringDate);
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if (dailyFile !== undefined) {
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for (let i = 0; i < dailyFile.length; i++) {
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let candle = {
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open: undefined,
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close: undefined,
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min: 10000000000000,
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max: 0,
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begin: undefined,
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end: undefined,
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direction: undefined
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};
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candle.min = dailyFile[i][0];
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candle.max = dailyFile[i][1];
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candle.open = dailyFile[i][2];
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candle.close = dailyFile[i][3];
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candle.begin = dailyFile[i][4];
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candle.end = dailyFile[i][5];
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if (candle.open > candle.close) { candle.direction = 'down'; }
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if (candle.open < candle.close) { candle.direction = 'up'; }
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if (candle.open === candle.close) { candle.direction = 'side'; }
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/* Contributing to Auto-Scale*/
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if (i === 0) {
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coordinateSystem.reportXValue(candle.begin)
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}
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if (i === dailyFile.length - 1) {
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coordinateSystem.reportXValue(candle.end)
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}
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if (
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(candle.begin >= farLeftDate.valueOf() && candle.end <= farRightDate.valueOf()) &&
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(candle.begin >= coordinateSystem.min.x && candle.end <= coordinateSystem.max.x)
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) {
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candles.push(candle);
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if (datetime.valueOf() >= candle.begin && datetime.valueOf() <= candle.end) {
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thisObject.currentCandle = candle;
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thisObject.container.eventHandler.raiseEvent("Current Record Changed", thisObject.currentCandle);
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}
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}
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}
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}
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currentDate = new Date(currentDate.valueOf() + ONE_DAY_IN_MILISECONDS);
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}
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/* Lets check if all the visible screen is going to be covered by candles. */
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let lowerEnd = leftDate.valueOf();
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let upperEnd = rightDate.valueOf();
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if (candles.length > 0) {
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if (candles[0].begin > lowerEnd || candles[candles.length - 1].end < upperEnd) {
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setTimeout(recalculate, 2000);
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}
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}
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} catch (err) {
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if (ERROR_LOG === true) { logger.write("[ERROR] recalculateUsingDailyFiles -> err = " + err.stack); }
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}
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}
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function recalculateUsingMarketFiles() {
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try {
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if (marketFile === undefined) { return; } // Initialization not complete yet.
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let daysOnSides = getSideDays(timeFrame);
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let leftDate = UI.projects.foundations.utilities.dateRateTransformations.getDateFromPointAtBrowserCanvas(UI.projects.foundations.spaces.chartingSpace.viewport.visibleArea.topLeft, thisObject.container, coordinateSystem);
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let rightDate = UI.projects.foundations.utilities.dateRateTransformations.getDateFromPointAtBrowserCanvas(UI.projects.foundations.spaces.chartingSpace.viewport.visibleArea.topRight, thisObject.container, coordinateSystem);
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let dateDiff = rightDate.valueOf() - leftDate.valueOf();
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leftDate = new Date(leftDate.valueOf() - dateDiff * 1.5);
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rightDate = new Date(rightDate.valueOf() + dateDiff * 1.5);
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candles = [];
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for (let i = 0; i < marketFile.length; i++) {
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let candle = {
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open: undefined,
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close: undefined,
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min: 10000000000000,
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max: 0,
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begin: undefined,
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end: undefined,
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direction: undefined
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};
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candle.min = marketFile[i][0];
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candle.max = marketFile[i][1];
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candle.open = marketFile[i][2];
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candle.close = marketFile[i][3];
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candle.begin = marketFile[i][4];
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candle.end = marketFile[i][5];
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if (candle.open > candle.close) { candle.direction = 'down'; }
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if (candle.open < candle.close) { candle.direction = 'up'; }
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if (candle.open === candle.close) { candle.direction = 'side'; }
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/* Contributing to Auto-Scale*/
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if (i === 0) {
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coordinateSystem.reportXValue(candle.begin)
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}
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if (i === marketFile.length - 1) {
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coordinateSystem.reportXValue(candle.end)
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}
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if (
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(candle.begin >= leftDate.valueOf() && candle.end <= rightDate.valueOf()) &&
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(candle.begin >= coordinateSystem.min.x && candle.end <= coordinateSystem.max.x)
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) {
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candles.push(candle);
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if (datetime.valueOf() >= candle.begin && datetime.valueOf() <= candle.end) {
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thisObject.currentCandle = candle;
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thisObject.container.eventHandler.raiseEvent("Current Record Changed", thisObject.currentCandle);
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}
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}
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}
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} catch (err) {
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if (ERROR_LOG === true) { logger.write("[ERROR] recalculateUsingMarketFiles -> err = " + err.stack); }
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}
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}
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function plotChart() {
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try {
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let elementsPlotted = 0
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let lowResolution = false
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if (UI.projects.foundations.spaces.chartingSpace.viewport.zoomTargetLevel < UI.projects.foundations.globals.zoom.ZOOM_OUT_THRESHOLD_FOR_PLOTTING_IN_LOW_RESOLUTION) {
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if (candles.length > 100) {
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lowResolution = true
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}
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}
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if (candles.length > 0) {
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/* On screen candles */
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let onScreenCandles = []
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let mouseCandle
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/* Now we calculate all the points. */
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for (let i = 0; i < candles.length; i++) {
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candle = candles[i];
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candle.candlePoint1 = {
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x: candle.begin + timeFrame / 7 * 1.5,
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y: candle.open
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};
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candle.candlePoint2 = {
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x: candle.begin + timeFrame / 7 * 5.5,
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y: candle.open
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};
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candle.candlePoint3 = {
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x: candle.begin + timeFrame / 7 * 5.5,
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y: candle.close
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};
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candle.candlePoint4 = {
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x: candle.begin + timeFrame / 7 * 1.5,
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y: candle.close
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};
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candle.candlePoint1 = coordinateSystem.transformThisPoint(candle.candlePoint1);
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candle.candlePoint2 = coordinateSystem.transformThisPoint(candle.candlePoint2);
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candle.candlePoint3 = coordinateSystem.transformThisPoint(candle.candlePoint3);
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candle.candlePoint4 = coordinateSystem.transformThisPoint(candle.candlePoint4);
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candle.candlePoint1 = UI.projects.foundations.utilities.coordinateTransformations.transformThisPoint(candle.candlePoint1, thisObject.container);
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candle.candlePoint2 = UI.projects.foundations.utilities.coordinateTransformations.transformThisPoint(candle.candlePoint2, thisObject.container);
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candle.candlePoint3 = UI.projects.foundations.utilities.coordinateTransformations.transformThisPoint(candle.candlePoint3, thisObject.container);
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candle.candlePoint4 = UI.projects.foundations.utilities.coordinateTransformations.transformThisPoint(candle.candlePoint4, thisObject.container);
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/* Skip the first candle with zero at open */
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if (candle.open === 0) { continue }
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if (candle.candlePoint2.x < UI.projects.foundations.spaces.chartingSpace.viewport.visibleArea.bottomLeft.x || candle.candlePoint1.x > UI.projects.foundations.spaces.chartingSpace.viewport.visibleArea.bottomRight.x) {
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continue
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}
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addToOnScreenCandles(candle)
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candle.stickPoint1 = {
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x: candle.begin + timeFrame / 7 * 3.2,
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y: candle.max
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};
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candle.stickPoint2 = {
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x: candle.begin + timeFrame / 7 * 3.8,
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y: candle.max
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};
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|
|
candle.stickPoint3 = {
|
|
x: candle.begin + timeFrame / 7 * 3.8,
|
|
y: candle.min
|
|
};
|
|
|
|
candle.stickPoint4 = {
|
|
x: candle.begin + timeFrame / 7 * 3.2,
|
|
y: candle.min
|
|
};
|
|
|
|
candle.stickPoint1 = coordinateSystem.transformThisPoint(candle.stickPoint1);
|
|
candle.stickPoint2 = coordinateSystem.transformThisPoint(candle.stickPoint2);
|
|
candle.stickPoint3 = coordinateSystem.transformThisPoint(candle.stickPoint3);
|
|
candle.stickPoint4 = coordinateSystem.transformThisPoint(candle.stickPoint4);
|
|
|
|
candle.stickPoint1 = UI.projects.foundations.utilities.coordinateTransformations.transformThisPoint(candle.stickPoint1, thisObject.container);
|
|
candle.stickPoint2 = UI.projects.foundations.utilities.coordinateTransformations.transformThisPoint(candle.stickPoint2, thisObject.container);
|
|
candle.stickPoint3 = UI.projects.foundations.utilities.coordinateTransformations.transformThisPoint(candle.stickPoint3, thisObject.container);
|
|
candle.stickPoint4 = UI.projects.foundations.utilities.coordinateTransformations.transformThisPoint(candle.stickPoint4, thisObject.container);
|
|
|
|
if (UI.projects.foundations.spaces.chartingSpace.viewport.zoomTargetLevel < UI.projects.foundations.globals.zoom.ZOOM_OUT_THRESHOLD_FOR_PACKING_OBJECTS_AT_THE_BOTTOM_OR_TOP_OF_VIEWPORT) {
|
|
let diffA = candle.stickPoint3.y - UI.projects.foundations.spaces.chartingSpace.viewport.visibleArea.bottomLeft.y
|
|
if (diffA > 0) {
|
|
candle.candlePoint1.y = candle.candlePoint1.y - diffA
|
|
candle.candlePoint2.y = candle.candlePoint2.y - diffA
|
|
candle.candlePoint3.y = candle.candlePoint3.y - diffA
|
|
candle.candlePoint4.y = candle.candlePoint4.y - diffA
|
|
|
|
candle.stickPoint1.y = candle.stickPoint1.y - diffA
|
|
candle.stickPoint2.y = candle.stickPoint2.y - diffA
|
|
candle.stickPoint3.y = candle.stickPoint3.y - diffA
|
|
candle.stickPoint4.y = candle.stickPoint4.y - diffA
|
|
}
|
|
|
|
let diffB = candle.stickPoint1.y - UI.projects.foundations.spaces.chartingSpace.viewport.visibleArea.topLeft.y
|
|
if (diffB < 0) {
|
|
candle.candlePoint1.y = candle.candlePoint1.y - diffB
|
|
candle.candlePoint2.y = candle.candlePoint2.y - diffB
|
|
candle.candlePoint3.y = candle.candlePoint3.y - diffB
|
|
candle.candlePoint4.y = candle.candlePoint4.y - diffB
|
|
|
|
candle.stickPoint1.y = candle.stickPoint1.y - diffB
|
|
candle.stickPoint2.y = candle.stickPoint2.y - diffB
|
|
candle.stickPoint3.y = candle.stickPoint3.y - diffB
|
|
candle.stickPoint4.y = candle.stickPoint4.y - diffB
|
|
}
|
|
}
|
|
|
|
candle.candlePoint1 = UI.projects.foundations.spaces.chartingSpace.viewport.fitIntoVisibleArea(candle.candlePoint1);
|
|
candle.candlePoint2 = UI.projects.foundations.spaces.chartingSpace.viewport.fitIntoVisibleArea(candle.candlePoint2);
|
|
candle.candlePoint3 = UI.projects.foundations.spaces.chartingSpace.viewport.fitIntoVisibleArea(candle.candlePoint3);
|
|
candle.candlePoint4 = UI.projects.foundations.spaces.chartingSpace.viewport.fitIntoVisibleArea(candle.candlePoint4);
|
|
|
|
candle.candlePoint1 = thisObject.fitFunction(candle.candlePoint1);
|
|
candle.candlePoint2 = thisObject.fitFunction(candle.candlePoint2);
|
|
candle.candlePoint3 = thisObject.fitFunction(candle.candlePoint3);
|
|
candle.candlePoint4 = thisObject.fitFunction(candle.candlePoint4);
|
|
|
|
candle.stickPoint1 = UI.projects.foundations.spaces.chartingSpace.viewport.fitIntoVisibleArea(candle.stickPoint1);
|
|
candle.stickPoint2 = UI.projects.foundations.spaces.chartingSpace.viewport.fitIntoVisibleArea(candle.stickPoint2);
|
|
candle.stickPoint3 = UI.projects.foundations.spaces.chartingSpace.viewport.fitIntoVisibleArea(candle.stickPoint3);
|
|
candle.stickPoint4 = UI.projects.foundations.spaces.chartingSpace.viewport.fitIntoVisibleArea(candle.stickPoint4);
|
|
|
|
candle.stickPoint1 = thisObject.fitFunction(candle.stickPoint1);
|
|
candle.stickPoint2 = thisObject.fitFunction(candle.stickPoint2);
|
|
candle.stickPoint3 = thisObject.fitFunction(candle.stickPoint3);
|
|
candle.stickPoint4 = thisObject.fitFunction(candle.stickPoint4);
|
|
}
|
|
|
|
|
|
|
|
function addToOnScreenCandles(candle) {
|
|
|
|
/* Contributing to Auto-Scale*/
|
|
coordinateSystem.reportYValue(candle.max)
|
|
coordinateSystem.reportYValue(candle.min)
|
|
|
|
|
|
//if (onScreenCandles.length < 15000) {
|
|
onScreenCandles.push(candle)
|
|
//}
|
|
|
|
if (userPositionDate >= candle.begin && userPositionDate <= candle.end) {
|
|
mouseCandle = candle
|
|
}
|
|
}
|
|
|
|
/* We draw the sticks */
|
|
browserCanvasContext.beginPath();
|
|
|
|
for (let i = 0; i < onScreenCandles.length; i++) {
|
|
|
|
candle = onScreenCandles[i];
|
|
|
|
browserCanvasContext.moveTo(candle.stickPoint1.x, candle.stickPoint1.y);
|
|
browserCanvasContext.lineTo(candle.stickPoint2.x, candle.stickPoint2.y);
|
|
browserCanvasContext.lineTo(candle.stickPoint3.x, candle.stickPoint3.y);
|
|
browserCanvasContext.lineTo(candle.stickPoint4.x, candle.stickPoint4.y);
|
|
}
|
|
|
|
browserCanvasContext.closePath();
|
|
|
|
if (lowResolution === false) {
|
|
browserCanvasContext.fillStyle = 'rgba(' + UI_COLOR.DARK + ', 1)';
|
|
browserCanvasContext.fill();
|
|
|
|
browserCanvasContext.strokeStyle = 'rgba(' + UI_COLOR.LIGHT + ', 1)';
|
|
browserCanvasContext.lineWidth = 1;
|
|
browserCanvasContext.setLineDash([]) // Resets Line Dash
|
|
browserCanvasContext.stroke();
|
|
|
|
}
|
|
|
|
/* The stick at the mouse candle */
|
|
if (mouseCandle) {
|
|
browserCanvasContext.beginPath();
|
|
|
|
candle = mouseCandle
|
|
|
|
browserCanvasContext.moveTo(candle.stickPoint1.x, candle.stickPoint1.y);
|
|
browserCanvasContext.lineTo(candle.stickPoint2.x, candle.stickPoint2.y);
|
|
browserCanvasContext.lineTo(candle.stickPoint3.x, candle.stickPoint3.y);
|
|
browserCanvasContext.lineTo(candle.stickPoint4.x, candle.stickPoint4.y);
|
|
|
|
browserCanvasContext.closePath();
|
|
|
|
if (lowResolution === false) {
|
|
browserCanvasContext.fillStyle = 'rgba(' + UI_COLOR.DARK + ', 1)';
|
|
browserCanvasContext.fill();
|
|
}
|
|
|
|
browserCanvasContext.strokeStyle = 'rgba(' + UI_COLOR.TITANIUM_YELLOW + ', 1)';
|
|
browserCanvasContext.lineWidth = 1;
|
|
browserCanvasContext.setLineDash([]) // Resets Line Dash
|
|
browserCanvasContext.stroke();
|
|
}
|
|
|
|
|
|
/* We draw the candles. */
|
|
drawCandlesByDirection('up')
|
|
drawCandlesByDirection('down')
|
|
drawCandlesByDirection('side')
|
|
|
|
function drawCandlesByDirection(direction) {
|
|
|
|
browserCanvasContext.beginPath();
|
|
|
|
for (let i = 0; i < onScreenCandles.length; i++) {
|
|
|
|
candle = onScreenCandles[i];
|
|
|
|
if (candle.direction !== direction) { continue }
|
|
|
|
browserCanvasContext.moveTo(candle.candlePoint1.x, candle.candlePoint1.y);
|
|
browserCanvasContext.lineTo(candle.candlePoint2.x, candle.candlePoint2.y);
|
|
browserCanvasContext.lineTo(candle.candlePoint3.x, candle.candlePoint3.y);
|
|
browserCanvasContext.lineTo(candle.candlePoint4.x, candle.candlePoint4.y);
|
|
browserCanvasContext.lineTo(candle.candlePoint1.x, candle.candlePoint1.y);
|
|
|
|
elementsPlotted++
|
|
}
|
|
|
|
browserCanvasContext.closePath();
|
|
|
|
if (lowResolution === false) {
|
|
|
|
if (direction === 'up') { browserCanvasContext.fillStyle = 'rgba(' + UI_COLOR.GREEN + ', 1)'; }
|
|
if (direction === 'down') { browserCanvasContext.fillStyle = 'rgba(' + UI_COLOR.RUSTED_RED + ', 1)'; }
|
|
if (direction === 'side') { browserCanvasContext.fillStyle = 'rgba(' + UI_COLOR.DARK + ', 1)'; }
|
|
|
|
browserCanvasContext.fill();
|
|
}
|
|
|
|
if (direction === 'up') { browserCanvasContext.strokeStyle = 'rgba(' + UI_COLOR.PATINATED_TURQUOISE + ', 1)'; }
|
|
if (direction === 'down') { browserCanvasContext.strokeStyle = 'rgba(' + UI_COLOR.RED + ', 1)'; }
|
|
if (direction === 'side') { browserCanvasContext.strokeStyle = 'rgba(' + UI_COLOR.DARK + ', 1)'; }
|
|
|
|
browserCanvasContext.lineWidth = 1;
|
|
browserCanvasContext.setLineDash([]) // Resets Line Dash
|
|
browserCanvasContext.stroke();
|
|
|
|
}
|
|
|
|
/* Draw mouse candle and Raise Event. */
|
|
if (mouseCandle) {
|
|
|
|
/* highlight the current candle */
|
|
|
|
browserCanvasContext.beginPath();
|
|
|
|
candle = mouseCandle
|
|
|
|
browserCanvasContext.moveTo(candle.candlePoint1.x, candle.candlePoint1.y);
|
|
browserCanvasContext.lineTo(candle.candlePoint2.x, candle.candlePoint2.y);
|
|
browserCanvasContext.lineTo(candle.candlePoint3.x, candle.candlePoint3.y);
|
|
browserCanvasContext.lineTo(candle.candlePoint4.x, candle.candlePoint4.y);
|
|
|
|
browserCanvasContext.closePath();
|
|
|
|
browserCanvasContext.fillStyle = 'rgba(' + UI_COLOR.TITANIUM_YELLOW + ', 1)'; // Current candle according to time
|
|
|
|
browserCanvasContext.fill();
|
|
|
|
let currentCandle = {
|
|
bodyWidth: candle.candlePoint2.x - candle.candlePoint1.x,
|
|
bodyHeight: candle.candlePoint3.y - candle.candlePoint2.y,
|
|
stickHeight: candle.stickPoint4.y - candle.stickPoint2.y,
|
|
stickWidth: candle.stickPoint2.x - candle.stickPoint1.x,
|
|
stickStart: candle.candlePoint2.y - candle.stickPoint2.y,
|
|
timeFrame: timeFrame,
|
|
innerCandle: candle
|
|
};
|
|
thisObject.container.eventHandler.raiseEvent("Current Record Changed", currentCandle);
|
|
}
|
|
}
|
|
return elementsPlotted
|
|
} catch (err) {
|
|
|
|
if (ERROR_LOG === true) { logger.write("[ERROR] plotChart -> err = " + err.stack); }
|
|
}
|
|
}
|
|
|
|
|
|
function onViewportZoomChanged(event) {
|
|
|
|
try {
|
|
|
|
recalculate();
|
|
|
|
} catch (err) {
|
|
|
|
if (ERROR_LOG === true) { logger.write("[ERROR] onViewportZoomChanged -> err = " + err.stack); }
|
|
}
|
|
}
|
|
|
|
function onViewportPositionChanged(event) {
|
|
|
|
try {
|
|
|
|
if (event !== undefined) {
|
|
if (event.recalculate === true) {
|
|
recalculate()
|
|
return
|
|
}
|
|
}
|
|
if (Math.random() * 100 > 95) {
|
|
recalculate()
|
|
};
|
|
|
|
} catch (err) {
|
|
|
|
if (ERROR_LOG === true) { logger.write("[ERROR] onViewportPositionChanged -> err = " + err.stack); }
|
|
}
|
|
}
|
|
|
|
function onDragFinished() {
|
|
|
|
try {
|
|
|
|
recalculate();
|
|
|
|
} catch (err) {
|
|
|
|
if (ERROR_LOG === true) { logger.write("[ERROR] onDragFinished -> err = " + err.stack); }
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|