637 lines
20 KiB
JavaScript
637 lines
20 KiB
JavaScript
function newAAMastersAAOliviaCandlesticks() {
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var candles = []; // this changed.
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let timePeriod = INITIAL_TIME_PERIOD;
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var plotArea = newPlotArea();
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var datetime = INITIAL_DATE;
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var candlesticks = {
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onLayerStatusChanged: onLayerStatusChanged,
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currentCandle: undefined,
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positionAtDatetime: positionAtDatetime,
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setTimePeriod: setTimePeriod,
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setDatetime: setDatetime,
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container: undefined,
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draw: draw,
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getContainer: getContainer,
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initialize: initialize
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};
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var container = newContainer();
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container.initialize();
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candlesticks.container = container;
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container.displacement.containerName = "AAMasters AAOlivia Candlesticks";
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container.zoom.containerName = "AAMasters AAOlivia Candlesticks";
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container.frame.containerName = "AAMasters AAOlivia Candlesticks";
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let marketFile;
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let dailyFilesCursor;
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let layerStatus = 'off';
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let fileCache;
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return candlesticks;
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function initialize(pExchange, pMarket, pDatetime, pTimePeriod, chartLayersPanel) {
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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", "Candles", "Candlesticks", pExchange, pMarket, pDatetime, onFileReady);
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function onFileReady() {
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marketFile = fileCache.getMarketFile(pTimePeriod);
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if (marketFile !== undefined) { // if the file ready is the one we need then it will continue here.
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recalculateScale();
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layerStatus = chartLayersPanel.getLayerStatus(chartLayersPanel.layerNames.OLIVIA_CANDLES);
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recalculateCandles();
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postitionViewPort();
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viewPort.eventHandler.listenToEvent("Zoom Changed", onZoomChanged);
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canvas.eventHandler.listenToEvent("Drag Finished", onDragFinished);
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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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var 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 onLayerStatusChanged(eventData) {
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if (eventData.layer === 'Olivia Candlesticks') {
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layerStatus = eventData.status;
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}
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}
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function onZoomChanged(event) {
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recalculateCandles();
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}
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function onDragFinished() {
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if (timePeriod <= _1_HOUR_IN_MILISECONDS) {
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recalculateCandles();
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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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marketFile = fileCache.getMarketFile(pTimePeriod);
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} else {
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dailyFilesCursor = fileCache.getFileCursor(pTimePeriod);
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}
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recalculateCandles();
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}
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function setDatetime(newDatetime) {
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datetime = newDatetime;
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recalculateCandles();
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fileCache.setDatetime(newDatetime);
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}
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function postitionViewPort() {
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try {
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let targetPoint = {
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x: candles[Math.round(candles.length / 2)].begin,
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y: candles[Math.round(candles.length / 2)].min + (candles[Math.round(candles.length / 2)].max - candles[Math.round(candles.length / 2)].min)
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};
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targetPoint = plotArea.inverseTransform(targetPoint, candlesticks.container.frame.height);
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targetPoint = transformThisPoint(targetPoint, candlesticks.container);
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let displaceVector = {
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x: (viewPort.visibleArea.bottomRight.x - viewPort.visibleArea.topLeft.x) / 2 - targetPoint.x,
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y: (viewPort.visibleArea.bottomLeft.y - viewPort.visibleArea.topLeft.y) / 2 - targetPoint.y
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};
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viewPort.displace(displaceVector);
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} catch (err) {
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// if there data is missing of the days it must position in then an exception is raised.
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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, candlesticks.container.frame.height);
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targetPoint = transformThisPoint(targetPoint, candlesticks.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, candlesticks.container.frame.height);
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targetMax = transformThisPoint(targetMax, candlesticks.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, candlesticks.container.frame.height);
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targetMin = transformThisPoint(targetMin, candlesticks.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 !== ONE_DAY_IN_MILISECONDS) {
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if (Math.random() * 100 > 98) {
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recalculateCandles();
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}
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}
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plotCandleChart();
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}
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function recalculateCandles() {
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if (layerStatus === 'off') { return; }
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if (timePeriod >= _1_HOUR_IN_MILISECONDS) {
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recalculateCandlesUsingMarketFiles();
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} else {
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recalculateCandlesUsingDailyFiles();
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}
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candlesticks.container.eventHandler.raiseEvent("Candles Changed", candles);
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}
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function recalculateCandlesUsingDailyFiles(currentDateOnly) {
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let daysOnSides = getSideDays(timePeriod);
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let leftDate;
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let rightDate;
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if (currentDateOnly === true) {
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leftDate = new Date(datetime.getTime());
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rightDate = new Date(datetime.getTime());
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leftDate = removeTime(datetime);
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rightDate = removeTime(datetime);
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} else {
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leftDate = getDateFromPoint(viewPort.visibleArea.topLeft, candlesticks.container, plotArea);
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rightDate = getDateFromPoint(viewPort.visibleArea.topRight, candlesticks.container, plotArea);
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leftDate.setDate(leftDate.getDate() - daysOnSides);
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rightDate.setDate(rightDate.getDate() + daysOnSides);
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}
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let currentDate = new Date(leftDate.getTime());
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candles = [];
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while (currentDate.getTime() <= rightDate.getTime()) {
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let stringDate = currentDate.getFullYear() + '-' + pad(currentDate.getMonth() + 1, 2) + '-' + pad(currentDate.getDate(), 2);
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let dailyFile = dailyFilesCursor.dailyFiles.get(stringDate);
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if (dailyFile !== undefined) {
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const fileTimePeriod = 60 * 1000;
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const totalCandles = dailyFile.length * fileTimePeriod / timePeriod;
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const recordsPerCandle = timePeriod / fileTimePeriod;
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for (var i = 0; i < totalCandles; i++) {
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var candle = newCandle();
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let min = dailyFile[i * recordsPerCandle][0];
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let max = dailyFile[i * recordsPerCandle][1];
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for (var j = 0; j < recordsPerCandle; j++) {
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if (dailyFile[i * recordsPerCandle + j][0] < min) {
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min = dailyFile[i * recordsPerCandle + j][0];
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}
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if (dailyFile[i * recordsPerCandle + j][1] > max) {
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max = dailyFile[i * recordsPerCandle + j][1];
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}
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}
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candle.min = min;
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candle.max = max;
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candle.open = dailyFile[i * recordsPerCandle][2];
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candle.close = dailyFile[i * recordsPerCandle + recordsPerCandle - 1][3];
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candle.begin = dailyFile[i * recordsPerCandle][4];
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candle.end = dailyFile[i * recordsPerCandle + recordsPerCandle - 1][5];
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candle.beginId = dailyFile[i * recordsPerCandle][6];
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candle.endId = dailyFile[i * recordsPerCandle + recordsPerCandle - 1][7];
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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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candles.push(candle);
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if (datetime.valueOf() >= candle.begin && datetime.valueOf() <= candle.end) {
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candlesticks.currentCandle = candle;
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candlesticks.container.eventHandler.raiseEvent("Current Candle Changed", candlesticks.currentCandle);
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}
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}
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}
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currentDate.setDate(currentDate.getDate() + 1);
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}
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}
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function recalculateCandlesUsingMarketFiles() {
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if (marketFile === undefined) { return;} // Initialization not complete yet.
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candles = [];
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for (var i = 0; i < marketFile.length; i++) {
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var candle = newCandle();
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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 = (new Date(marketFile[i][4])).valueOf();
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candle.end = (new Date(marketFile[i][5])).valueOf();
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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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candles.push(candle);
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}
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}
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function recalculateScale() {
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if (marketFile === undefined) { return; } // Initialization not complete yet.
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var minValue = {
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x: EARLIEST_DATE.valueOf(),
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y: 0
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};
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var 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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candlesticks.container.frame.width,
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candlesticks.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 (var 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 plotCandleChart() {
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if (candles.length > 0) {
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/* Now we calculate and plot the candles */
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for (var i = 0; i < candles.length; i++) {
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candle = candles[i];
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var 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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var 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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var 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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var 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, candlesticks.container.frame.height);
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candlePoint2 = plotArea.inverseTransform(candlePoint2, candlesticks.container.frame.height);
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candlePoint3 = plotArea.inverseTransform(candlePoint3, candlesticks.container.frame.height);
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candlePoint4 = plotArea.inverseTransform(candlePoint4, candlesticks.container.frame.height);
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candlePoint1 = transformThisPoint(candlePoint1, candlesticks.container);
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candlePoint2 = transformThisPoint(candlePoint2, candlesticks.container);
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candlePoint3 = transformThisPoint(candlePoint3, candlesticks.container);
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candlePoint4 = transformThisPoint(candlePoint4, candlesticks.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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var 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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var 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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var 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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var 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, candlesticks.container.frame.height);
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stickPoint2 = plotArea.inverseTransform(stickPoint2, candlesticks.container.frame.height);
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stickPoint3 = plotArea.inverseTransform(stickPoint3, candlesticks.container.frame.height);
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stickPoint4 = plotArea.inverseTransform(stickPoint4, candlesticks.container.frame.height);
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stickPoint1 = transformThisPoint(stickPoint1, candlesticks.container);
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stickPoint2 = transformThisPoint(stickPoint2, candlesticks.container);
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stickPoint3 = transformThisPoint(stickPoint3, candlesticks.container);
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stickPoint4 = transformThisPoint(stickPoint4, candlesticks.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);
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browserCanvasContext.closePath();
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browserCanvasContext.fillStyle = 'rgba(54, 54, 54, 1)';
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browserCanvasContext.fill();
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if (datetime !== undefined) {
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let dateValue = datetime.valueOf();
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if (dateValue >= candle.begin && dateValue <= candle.end) {
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browserCanvasContext.strokeStyle = 'rgba(255, 233, 31, 1)'; // Current candle accroding to time
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} else {
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browserCanvasContext.strokeStyle = 'rgba(212, 206, 201, 1)';
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}
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} else {
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browserCanvasContext.strokeStyle = 'rgba(212, 206, 201, 1)';
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}
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browserCanvasContext.lineWidth = 1;
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browserCanvasContext.stroke();
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browserCanvasContext.beginPath();
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browserCanvasContext.moveTo(candlePoint1.x, candlePoint1.y);
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browserCanvasContext.lineTo(candlePoint2.x, candlePoint2.y);
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browserCanvasContext.lineTo(candlePoint3.x, candlePoint3.y);
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browserCanvasContext.lineTo(candlePoint4.x, candlePoint4.y);
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browserCanvasContext.closePath();
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if (candle.direction === 'up') { browserCanvasContext.strokeStyle = 'rgba(27, 105, 7, 1)'; }
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if (candle.direction === 'down') { browserCanvasContext.strokeStyle = 'rgba(130, 9, 9, 1)'; }
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if (candle.direction === 'side') { browserCanvasContext.strokeStyle = 'rgba(27, 7, 105, 1)'; }
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if (datetime !== undefined) {
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let dateValue = datetime.valueOf();
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if (dateValue >= candle.begin && dateValue <= candle.end) {
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/* highlight the current candle */
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|
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
|
|
};
|
|
|
|
candlesticks.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();
|
|
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
}
|
|
|