695 lines
23 KiB
JavaScript
695 lines
23 KiB
JavaScript
function newAAMastersAAOliviaCandles() {
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let thisObject = {
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// Main functions and properties.
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initialize: initialize,
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container: undefined,
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getContainer: getContainer,
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setTimePeriod: setTimePeriod,
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setDatetime: setDatetime,
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draw: draw,
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// Secondary functions and properties.
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currentCandle: undefined,
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positionAtDatetime: positionAtDatetime,
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onLayerStatusChanged: onLayerStatusChanged
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};
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/* this is part of the module template */
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let container = newContainer(); // Do not touch this 3 lines, they are just needed.
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container.initialize();
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thisObject.container = container;
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let layerStatus = 'off'; // Since the moduleis a layer, it must handle the different possible layer status.
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let plotArea = newPlotArea(); // Needed to be able to plot on the timeline, otherwise not.
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let timePeriod; // This will hold the current Time Period 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 fileCache; // This object will provide the different Market Files at different Time Periods.
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let fileCursorCache; // This object will provide the different File Cursors at different Time Periods.
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/* these are module specific variables: */
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let candles = []; // Here we keep the candles to be ploted every time the Draw() function is called by the AAWebPlatform.
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return thisObject;
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function initialize(pExchange, pMarket, pDatetime, pTimePeriod, pLayerStatus, callBackFunction) {
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let cursorCacheInProgress = false;
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let finaleStepsInProgress = false;
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datetime = pDatetime;
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timePeriod = pTimePeriod;
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fileCache = newFileCache();
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fileCache.initialize("AAMasters", "AAOlivia", "Market Candles", "Market Candlesticks", pExchange, pMarket, onFileReady);
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function onFileReady() {
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let newMarketFile = fileCache.getFile(ONE_DAY_IN_MILISECONDS);
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if (newMarketFile !== undefined) {
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marketFile = newMarketFile;
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initializeFileCursorCache();
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}
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}
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function initializeFileCursorCache() {
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if (cursorCacheInProgress === false) {
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cursorCacheInProgress = true;
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fileCursorCache = newFileCursorCache();
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fileCursorCache.initialize("AAMasters", "AAOlivia", "Daily Candles", "Daily Candlesticks", pExchange, pMarket, pDatetime, pTimePeriod, onFileCursorReady);
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}
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}
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function onFileCursorReady() {
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recalculate();
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let newFileCursor = fileCursorCache.getFileCursor(pTimePeriod);
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if (newFileCursor !== undefined) { // if the file ready is the one we need then it and we dont have it yet, then we will continue here.
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let stringDate = datetime.getUTCFullYear() + '-' + pad(datetime.getUTCMonth() + 1, 2) + '-' + pad(datetime.getUTCDate(), 2);
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let dailyFile = newFileCursor.files.get(stringDate);
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if (dailyFile !== undefined) {
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if (finaleStepsInProgress === false) {
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finaleStepsInProgress = true;
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fileCursor = newFileCursor;
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recalculateScale(); // With any of the market files we can calculate the scale.
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layerStatus = pLayerStatus;
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recalculate();
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viewPort.eventHandler.listenToEvent("Zoom Changed", onZoomChanged);
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canvas.eventHandler.listenToEvent("Drag Finished", onDragFinished);
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callBackFunction();
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}
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}
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}
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}
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}
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function getContainer(point) {
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if (layerStatus !== 'on') { return; }
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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 (this.container.frame.isThisPointHere(point) === true) {
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return this.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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}
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function setTimePeriod(pTimePeriod) {
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timePeriod = pTimePeriod;
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if (timePeriod >= _1_HOUR_IN_MILISECONDS) {
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let newMarketFile = fileCache.getFile(pTimePeriod);
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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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fileCursorCache.setTimePeriod(pTimePeriod);
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fileCursorCache.setDatetime(datetime);
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let newFileCursor = fileCursorCache.getFileCursor(pTimePeriod);
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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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if (timePeriod === _1_HOUR_IN_MILISECONDS) {
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fileCursorCache.setTimePeriod(pTimePeriod);
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fileCursorCache.setDatetime(datetime);
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}
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}
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function setDatetime(newDatetime) {
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/* If there is a change in the day, then we take some actions, otherwise, we dont. */
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let currentDate = Math.trunc(datetime.valueOf() / ONE_DAY_IN_MILISECONDS);
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let newDate = Math.trunc(newDatetime.valueOf() / ONE_DAY_IN_MILISECONDS);
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datetime = newDatetime;
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if (currentDate !== newDate) {
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if (timePeriod <= _1_HOUR_IN_MILISECONDS) {
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fileCursorCache.setDatetime(newDatetime);
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}
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}
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}
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function positionAtDatetime(newDatetime) {
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value = newDatetime.valueOf();
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/* Now we calculate which candle has this new time, because it will give us the y coordinate. */
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for (let i = 0; i < candles.length; i++) {
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if (value >= candles[i].begin && value <= candles[i].end) {
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let targetPoint = {
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x: value,
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y: candles[i].open
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};
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targetPoint = plotArea.inverseTransform(targetPoint, thisObject.container.frame.height);
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targetPoint = transformThisPoint(targetPoint, thisObject.container);
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let targetMax = {
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x: value,
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y: candles[i].max
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};
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targetMax = plotArea.inverseTransform(targetMax, thisObject.container.frame.height);
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targetMax = transformThisPoint(targetMax, thisObject.container);
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let targetMin = {
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x: value,
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y: candles[i].min
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};
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targetMin = plotArea.inverseTransform(targetMin, thisObject.container.frame.height);
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targetMin = transformThisPoint(targetMin, thisObject.container);
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let center = {
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x: (viewPort.visibleArea.bottomRight.x - viewPort.visibleArea.bottomLeft.x) / 2,
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y: (viewPort.visibleArea.bottomRight.y - viewPort.visibleArea.topRight.y) / 2
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};
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if (targetMax.y < viewPort.visibleArea.topLeft.y || targetMin.y > viewPort.visibleArea.bottomRight.y) {
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let displaceVector = {
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x: 0,
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y: center.y - targetPoint.y
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};
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viewPort.displaceTarget(displaceVector);
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}
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let displaceVector = {
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x: center.x - targetPoint.x,
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y: 0
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};
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viewPort.displace(displaceVector);
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return;
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}
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}
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}
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function draw() {
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if (layerStatus !== 'on') { return; }
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this.container.frame.draw();
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if (timePeriod < _1_HOUR_IN_MILISECONDS) {
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if (Math.random() * 1000 > 995) {
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recalculate();
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}
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}
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plotChart();
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}
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function recalculate() {
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if (layerStatus === 'off') { return; }
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if (timePeriod >= _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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}
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function recalculateUsingDailyFiles() {
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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(timePeriod);
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let leftDate = getDateFromPoint(viewPort.visibleArea.topLeft, thisObject.container, plotArea);
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let rightDate = getDateFromPoint(viewPort.visibleArea.topRight, thisObject.container, plotArea);
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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.getFullYear() + '-' + pad(currentDate.getMonth() + 1, 2) + '-' + pad(currentDate.getDate(), 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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if (candle.begin >= farLeftDate.valueOf() && candle.end <= farRightDate.valueOf()) {
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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 Candle 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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/* Lests 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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//console.log("File missing while calculating candles, scheduling a recalculation in 2 seconds.");
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}
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}
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//console.log("Olivia > recalculateUsingDailyFiles > total candles generated : " + candles.length);
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}
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function recalculateUsingMarketFiles() {
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if (marketFile === undefined) { return; } // Initialization not complete yet.
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let daysOnSides = getSideDays(timePeriod);
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let leftDate = getDateFromPoint(viewPort.visibleArea.topLeft, thisObject.container, plotArea);
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let rightDate = getDateFromPoint(viewPort.visibleArea.topRight, thisObject.container, plotArea);
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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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if (candle.begin >= leftDate.valueOf() && candle.end <= rightDate.valueOf()) {
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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 Candle Changed", thisObject.currentCandle);
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}
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}
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}
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//console.log("Olivia > recalculateUsingMarketFiles > total candles generated : " + candles.length);
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}
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function recalculateScale() {
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if (marketFile === undefined) { return; } // We need the market file to be loaded to make the calculation.
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if (plotArea.maxValue > 0) { return; } // Already calculated.
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let minValue = {
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x: EARLIEST_DATE.valueOf(),
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y: 0
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};
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let maxValue = {
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x: MAX_PLOTABLE_DATE.valueOf(),
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y: nextPorwerOf10(getMaxRate())
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};
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plotArea.initialize(
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minValue,
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maxValue,
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thisObject.container.frame.width,
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thisObject.container.frame.height
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);
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function getMaxRate() {
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let maxValue = 0;
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for (let i = 0; i < marketFile.length; i++) {
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let currentMax = marketFile[i][1]; // 1 = rates.
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if (maxValue < currentMax) {
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maxValue = currentMax;
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}
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}
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return maxValue;
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}
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}
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function plotChart() {
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if (candles.length > 0) {
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/* Now we calculate and plot the candles */
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for (let i = 0; i < candles.length; i++) {
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candle = candles[i];
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let candlePoint1 = {
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x: candle.begin + timePeriod / 7 * 1.5,
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y: candle.open
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};
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let candlePoint2 = {
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x: candle.begin + timePeriod / 7 * 5.5,
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y: candle.open
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};
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let candlePoint3 = {
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x: candle.begin + timePeriod / 7 * 5.5,
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y: candle.close
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};
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let candlePoint4 = {
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x: candle.begin + timePeriod / 7 * 1.5,
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y: candle.close
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};
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candlePoint1 = plotArea.inverseTransform(candlePoint1, thisObject.container.frame.height);
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candlePoint2 = plotArea.inverseTransform(candlePoint2, thisObject.container.frame.height);
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candlePoint3 = plotArea.inverseTransform(candlePoint3, thisObject.container.frame.height);
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candlePoint4 = plotArea.inverseTransform(candlePoint4, thisObject.container.frame.height);
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candlePoint1 = transformThisPoint(candlePoint1, thisObject.container);
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candlePoint2 = transformThisPoint(candlePoint2, thisObject.container);
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candlePoint3 = transformThisPoint(candlePoint3, thisObject.container);
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candlePoint4 = transformThisPoint(candlePoint4, thisObject.container);
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if (candlePoint2.x < viewPort.visibleArea.bottomLeft.x || candlePoint1.x > viewPort.visibleArea.bottomRight.x) {
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continue;
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}
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candlePoint1 = viewPort.fitIntoVisibleArea(candlePoint1);
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candlePoint2 = viewPort.fitIntoVisibleArea(candlePoint2);
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candlePoint3 = viewPort.fitIntoVisibleArea(candlePoint3);
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candlePoint4 = viewPort.fitIntoVisibleArea(candlePoint4);
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let stickPoint1 = {
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x: candle.begin + timePeriod / 7 * 3.2,
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y: candle.max
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};
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let stickPoint2 = {
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x: candle.begin + timePeriod / 7 * 3.8,
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y: candle.max
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};
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let stickPoint3 = {
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x: candle.begin + timePeriod / 7 * 3.8,
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y: candle.min
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};
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let stickPoint4 = {
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x: candle.begin + timePeriod / 7 * 3.2,
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y: candle.min
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};
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stickPoint1 = plotArea.inverseTransform(stickPoint1, thisObject.container.frame.height);
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stickPoint2 = plotArea.inverseTransform(stickPoint2, thisObject.container.frame.height);
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stickPoint3 = plotArea.inverseTransform(stickPoint3, thisObject.container.frame.height);
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stickPoint4 = plotArea.inverseTransform(stickPoint4, thisObject.container.frame.height);
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stickPoint1 = transformThisPoint(stickPoint1, thisObject.container);
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stickPoint2 = transformThisPoint(stickPoint2, thisObject.container);
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stickPoint3 = transformThisPoint(stickPoint3, thisObject.container);
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stickPoint4 = transformThisPoint(stickPoint4, thisObject.container);
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stickPoint1 = viewPort.fitIntoVisibleArea(stickPoint1);
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stickPoint2 = viewPort.fitIntoVisibleArea(stickPoint2);
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stickPoint3 = viewPort.fitIntoVisibleArea(stickPoint3);
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stickPoint4 = viewPort.fitIntoVisibleArea(stickPoint4);
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browserCanvasContext.beginPath();
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browserCanvasContext.moveTo(stickPoint1.x, stickPoint1.y);
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browserCanvasContext.lineTo(stickPoint2.x, stickPoint2.y);
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browserCanvasContext.lineTo(stickPoint3.x, stickPoint3.y);
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browserCanvasContext.lineTo(stickPoint4.x, stickPoint4.y);
|
|
|
|
browserCanvasContext.closePath();
|
|
browserCanvasContext.fillStyle = 'rgba(54, 54, 54, 1)';
|
|
browserCanvasContext.fill();
|
|
|
|
if (datetime !== undefined) {
|
|
|
|
let dateValue = datetime.valueOf();
|
|
|
|
if (dateValue >= candle.begin && dateValue <= candle.end) {
|
|
|
|
browserCanvasContext.strokeStyle = 'rgba(255, 233, 31, 1)'; // Current candle accroding to time
|
|
|
|
} else {
|
|
browserCanvasContext.strokeStyle = 'rgba(212, 206, 201, 1)';
|
|
}
|
|
|
|
} else {
|
|
browserCanvasContext.strokeStyle = 'rgba(212, 206, 201, 1)';
|
|
}
|
|
|
|
browserCanvasContext.lineWidth = 1;
|
|
browserCanvasContext.stroke();
|
|
|
|
browserCanvasContext.beginPath();
|
|
|
|
browserCanvasContext.moveTo(candlePoint1.x, candlePoint1.y);
|
|
browserCanvasContext.lineTo(candlePoint2.x, candlePoint2.y);
|
|
browserCanvasContext.lineTo(candlePoint3.x, candlePoint3.y);
|
|
browserCanvasContext.lineTo(candlePoint4.x, candlePoint4.y);
|
|
|
|
browserCanvasContext.closePath();
|
|
|
|
if (candle.direction === 'up') { browserCanvasContext.strokeStyle = 'rgba(27, 105, 7, 1)'; }
|
|
if (candle.direction === 'down') { browserCanvasContext.strokeStyle = 'rgba(130, 9, 9, 1)'; }
|
|
if (candle.direction === 'side') { browserCanvasContext.strokeStyle = 'rgba(27, 7, 105, 1)'; }
|
|
|
|
if (datetime !== undefined) {
|
|
|
|
let dateValue = datetime.valueOf();
|
|
|
|
if (dateValue >= candle.begin && dateValue <= candle.end) {
|
|
|
|
/* highlight the current candle */
|
|
|
|
browserCanvasContext.fillStyle = 'rgba(255, 233, 31, 1)'; // Current candle accroding to time
|
|
|
|
let currentCandle = {
|
|
bodyWidth: candlePoint2.x - candlePoint1.x,
|
|
bodyHeight: candlePoint3.y - candlePoint2.y,
|
|
stickHeight: stickPoint4.y - stickPoint2.y,
|
|
stickWidth: stickPoint2.x - stickPoint1.x,
|
|
stickStart: candlePoint2.y - stickPoint2.y,
|
|
period: timePeriod,
|
|
innerCandle: candle
|
|
};
|
|
|
|
thisObject.container.eventHandler.raiseEvent("Current Candle Info Changed", currentCandle);
|
|
|
|
} else {
|
|
|
|
if (candle.direction === 'up') { browserCanvasContext.fillStyle = 'rgba(64, 217, 26, 1)'; }
|
|
if (candle.direction === 'down') { browserCanvasContext.fillStyle = 'rgba(219, 18, 18, 1)'; }
|
|
if (candle.direction === 'side') { browserCanvasContext.fillStyle = 'rgba(64, 26, 217, 1)'; }
|
|
}
|
|
|
|
} else {
|
|
|
|
if (candle.direction === 'up') { browserCanvasContext.fillStyle = 'rgba(64, 217, 26, 1)'; }
|
|
if (candle.direction === 'down') { browserCanvasContext.fillStyle = 'rgba(219, 18, 18, 1)'; }
|
|
if (candle.direction === 'side') { browserCanvasContext.fillStyle = 'rgba(64, 26, 217, 1)'; }
|
|
|
|
}
|
|
|
|
|
|
|
|
if (
|
|
candlePoint1.x < viewPort.visibleArea.topLeft.x + 50
|
|
||
|
|
candlePoint1.x > viewPort.visibleArea.bottomRight.x - 50
|
|
) {
|
|
// we leave this candles without fill.
|
|
} else {
|
|
browserCanvasContext.fill();
|
|
}
|
|
|
|
browserCanvasContext.lineWidth = 1;
|
|
browserCanvasContext.stroke();
|
|
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
function onLayerStatusChanged(eventData) {
|
|
|
|
if (eventData.layer === 'Olivia Candlesticks') {
|
|
layerStatus = eventData.status;
|
|
}
|
|
|
|
}
|
|
|
|
function onZoomChanged(event) {
|
|
|
|
recalculate();
|
|
|
|
}
|
|
|
|
function onDragFinished() {
|
|
|
|
recalculate();
|
|
|
|
}
|
|
}
|
|
|