function newTimelineChart() { const MODULE_NAME = "Timeline Chart"; const INFO_LOG = false; const INTENSIVE_LOG = false; const ERROR_LOG = true; const logger = newWebDebugLog(); logger.fileName = MODULE_NAME; let timeLineCoordinateSystem = newTimeLineCoordinateSystem(); let timePeriod = INITIAL_TIME_PERIOD; let datetime = INITIAL_DATE; let thisObject = { setDatetime: setDatetime, container: undefined, draw: draw, getContainer: getContainer, initialize: initialize }; let container = newContainer(); container.initialize(); thisObject.container = container; container.displacement.containerName = "Timeline Chart"; container.frame.containerName = "Timeline Chart"; let chartGrid; let breakpointsBar; let initializationReady = false; let productsPanel; /* Background */ let logoAssetA; let logoAssetB; let logoExchange; let logoAA; let canDrawLogoA = false; let canDrawLogoB = false; let canDrawLogoExchange = false; let canDrawLogoAA = false; let plotterManager; return thisObject; function initialize(pProductsPanel, callBackFunction) { try { if (INFO_LOG === true) { logger.write("[INFO] initialize -> Entering function."); } /* We load the logow we will need for the background. */ logoA = new Image(); logoB = new Image(); logoExchange = new Image(); logoAA = new Image(); logoA.onload = onImageALoaded; function onImageALoaded() { canDrawLogoA = true; } logoB.onload = onImageBLoaded; function onImageBLoaded() { canDrawLogoB = true; } logoExchange.onload = onImageExchangeLoaded; function onImageExchangeLoaded() { canDrawLogoExchange = true; } logoAA.onload = onImageAALoaded; function onImageAALoaded() { canDrawLogoAA = true; } logoA.src = window.canvasApp.urlPrefix + "Images/tether-logo-background.png"; logoB.src = window.canvasApp.urlPrefix + "Images/bitcoin-logo-background.png"; logoExchange.src = window.canvasApp.urlPrefix + "Images/poloniex-logo-background.png"; logoAA.src = window.canvasApp.urlPrefix + "Images/aa-logo-background.png"; /* Remember the Products Panel */ productsPanel = pProductsPanel; chartGrid = newChartGrid(); chartGrid.initialize(); breakpointsBar = newBreakpointsBar(); breakpointsBar.initialize(container, timeLineCoordinateSystem); recalculateScale(); //moveViewPortToCurrentDatetime(); moveToUserPosition(container, timeLineCoordinateSystem); timePeriod = INITIAL_TIME_PERIOD; datetime = INITIAL_DATE; /* Event Subscriptions - we need this events to be fired first here and then in active Plotters. */ viewPort.eventHandler.listenToEvent("Offset Changed", onOffsetChanged); viewPort.eventHandler.listenToEvent("Zoom Changed", onZoomChanged); /* Initialize the Plotter Manager */ plotterManager = newPlottersManager(); plotterManager.container.displacement.parentDisplacement = thisObject.container.displacement; plotterManager.container.frame.parentFrame = thisObject.container.frame; plotterManager.container.parentContainer = thisObject.container; plotterManager.container.frame.width = thisObject.container.frame.width; plotterManager.container.frame.height = thisObject.container.frame.height; plotterManager.container.frame.position.x = thisObject.container.frame.position.x; plotterManager.container.frame.position.y = thisObject.container.frame.position.y; plotterManager.initialize(pProductsPanel, onPlotterManagerReady); function onPlotterManagerReady(err) { if (INFO_LOG === true) { logger.write("[INFO] initialize -> onPlotterManagerReady -> Entering function."); } if (err.result !== GLOBAL.DEFAULT_OK_RESPONSE.result) { if (ERROR_LOG === true) { logger.write("[ERROR] initialize -> onPlotterManagerReady -> Plotter Manager Initialization Failed. "); } if (ERROR_LOG === true) { logger.write("[ERROR] initialize -> onPlotterManagerReady -> err.message = " + err.message); } callBackFunction(GLOBAL.DEFAULT_FAIL_RESPONSE); return; } initializationReady = true; callBackFunction(GLOBAL.DEFAULT_OK_RESPONSE); return; } canvas.bottomSpace.chartAspectRatio.container.eventHandler.listenToEvent("Chart Aspect Ratio Changed", onAspectRatioChanged); function onAspectRatioChanged(pAspectRatio) { thisObject.container.frame.height = CHART_SPACE_HEIGHT * pAspectRatio.y; recalculateScale(); } } catch (err) { if (ERROR_LOG === true) { logger.write("[ERROR] initialize -> err = " + err); } callBackFunction(GLOBAL.DEFAULT_FAIL_RESPONSE); } } function onZoomChanged(event) { if (INFO_LOG === true) { logger.write("[INFO] onZoomChanged -> Entering function."); } if (initializationReady === true) { let currentTimePeriod = timePeriod; timePeriod = recalculatePeriod(event.newLevel); /* If the period changes, we need to spread the word in cascade towards all the depending objects. */ if (timePeriod !== currentTimePeriod) { plotterManager.setTimePeriod(timePeriod); } recalculateCurrentDatetime(); saveUserPosition(thisObject.container, timeLineCoordinateSystem); } } function setDatetime(pDatetime) { if (INFO_LOG === true) { logger.write("[INFO] setDatetime -> Entering function."); } /* This function is used when the time is changed through the user interface, but without zooming or panning. */ /* No matter if the day changed or not, we need to inform all visible Plotters. */ if (thisObject.container.frame.isInViewPort()) { plotterManager.setDatetime(pDatetime); plotterManager.positionAtDatetime(pDatetime); breakpointsBar.setDatetime(pDatetime); } } function onOffsetChanged() { if (INFO_LOG === true) { logger.write("[INFO] onOffsetChanged -> Entering function."); } if (initializationReady === true) { if (thisObject.container.frame.isInViewPort()) { recalculateCurrentDatetime(); saveUserPosition(thisObject.container, timeLineCoordinateSystem); } } } function recalculateCurrentDatetime() { if (INFO_LOG === true) { logger.write("[INFO] recalculateCurrentDatetime -> Entering function."); } /* The view port was moved or the view port zoom level was changed and the center of the screen points to a different datetime that we must calculate. */ let center = { x: (viewPort.visibleArea.bottomRight.x - viewPort.visibleArea.bottomLeft.x) / 2, y: (viewPort.visibleArea.bottomRight.y - viewPort.visibleArea.topRight.y) / 2 }; center = unTransformThisPoint(center, thisObject.container); center = timeLineCoordinateSystem.unInverseTransform(center, thisObject.container.frame.height); let newDate = new Date(0); newDate.setUTCSeconds(center.x / 1000); datetime = newDate; plotterManager.setDatetime(datetime); breakpointsBar.setDatetime(datetime); thisObject.container.eventHandler.raiseEvent("Datetime Changed", datetime); } function getContainer(point) { if (INFO_LOG === true) { logger.write("[INFO] getContainer -> Entering function."); } let container; container = chartGrid.getContainer(point); if (container !== undefined) { return container;} container = breakpointsBar.getContainer(point); return container; } function recalculateScale() { if (INFO_LOG === true) { logger.write("[INFO] recalculateScale -> Entering function."); } let minValue = { x: EARLIEST_DATE.valueOf(), y: 0 }; let maxValue = { x: MAX_PLOTABLE_DATE.valueOf(), y: nextPorwerOf10(USDT_BTC_HTH) / 4 }; timeLineCoordinateSystem.initialize( minValue, maxValue, thisObject.container.frame.width, thisObject.container.frame.height ); } function tooTiny() { if (INTENSIVE_LOG === true) { logger.write("[INFO] tooTiny -> Entering function."); } if (viewPort.zoomLevel < Math.trunc(-28.25 * 100) / 100) { return true; } else { return false; } } function tooSmall() { if (INFO_LOG === true) { logger.write("[INFO] tooSmall -> Entering function."); } if (viewPort.zoomLevel < Math.trunc(-27.25 * 100) / 100) { return true; } else { return false; } } function draw() { if (INTENSIVE_LOG === true) { logger.write("[INFO] draw -> Entering function."); } if (thisObject.container.frame.isInViewPort()) { this.container.frame.draw(); drawBackground(); chartGrid.draw(thisObject.container, timeLineCoordinateSystem); plotterManager.draw(); breakpointsBar.draw(); } } function drawBackground() { if (INTENSIVE_LOG === true) { logger.write("[INFO] drawBackground -> Entering function."); } if (canDrawLogoA === false || canDrawLogoB === false || canDrawLogoExchange === false || canDrawLogoAA === false) { return; } let backgroundLogoPoint1; let backgroundLogoPoint2; let imageHeight = 42; let imageWidth = 150; let MAX_COLUMNS = 16; let MAX_ROWS = 7; let point1 = { x: viewPort.visibleArea.topLeft.x, y: viewPort.visibleArea.topLeft.y }; backgroundLogoPoint1 = { x: getDateFromPoint(point1, thisObject.container, timeLineCoordinateSystem).valueOf(), y: getRateFromPoint(point1, thisObject.container, timeLineCoordinateSystem) }; let point2 = { x: viewPort.visibleArea.topLeft.x + imageWidth * 8, y: viewPort.visibleArea.topLeft.y }; backgroundLogoPoint2 = { x: getDateFromPoint(point2, thisObject.container, timeLineCoordinateSystem).valueOf(), y: getRateFromPoint(point2, thisObject.container, timeLineCoordinateSystem) }; let currentCorner = { x: getDateFromPoint(viewPort.visibleArea.topLeft, thisObject.container, timeLineCoordinateSystem).valueOf(), y: getRateFromPoint(viewPort.visibleArea.topLeft, thisObject.container, timeLineCoordinateSystem) }; currentCorner.x = Math.trunc(currentCorner.x / (backgroundLogoPoint2.x - backgroundLogoPoint1.x)) * (backgroundLogoPoint2.x - backgroundLogoPoint1.x); let rowHight = (viewPort.visibleArea.bottomLeft.y - viewPort.visibleArea.topLeft.y) / 4.5; imagePoint = timeLineCoordinateSystem.transformThisPoint(currentCorner); imagePoint = transformThisPoint(imagePoint, thisObject.container); let offSet = 0; for (let j = 0; j < MAX_ROWS; j++) { if (offSet === -imageWidth * 8) { offSet = -imageWidth * 4 - imageWidth; } else { offSet = -imageWidth * 8; } for (let i = 0; i < MAX_COLUMNS; i = i + 4) { let logo = logoA; browserCanvasContext.drawImage(logo, imagePoint.x + i * imageWidth * 2 + offSet, imagePoint.y + j * rowHight, imageWidth, imageHeight); } } offSet = 0; for (let j = 0; j < MAX_ROWS; j++) { if (offSet === -imageWidth * 8) { offSet = -imageWidth * 4 - imageWidth; } else { offSet = -imageWidth * 8; } for (let i = 1; i < MAX_COLUMNS; i = i + 4) { let logo = logoB; browserCanvasContext.drawImage(logo, imagePoint.x + i * imageWidth * 2 + offSet, imagePoint.y + j * rowHight, imageWidth, imageHeight); } } offSet = 0; for (let j = 0; j < MAX_ROWS; j++) { if (offSet === -imageWidth * 8) { offSet = -imageWidth * 4 - imageWidth; } else { offSet = -imageWidth * 8; } for (let i = 2; i < MAX_COLUMNS; i = i + 4) { let logo = logoExchange; browserCanvasContext.drawImage(logo, imagePoint.x + i * imageWidth * 2 + offSet, imagePoint.y + j * rowHight, imageWidth, imageHeight); } } offSet = 0; for (let j = 0; j < MAX_ROWS; j++) { if (offSet === -imageWidth * 8) { offSet = -imageWidth * 4 - imageWidth; } else { offSet = -imageWidth * 8; } for (let i = 3; i < MAX_COLUMNS; i = i + 4) { let logo = logoAA; browserCanvasContext.drawImage(logo, imagePoint.x + i * imageWidth * 2 + offSet, imagePoint.y + j * rowHight, imageWidth, imageHeight); } } /* We will paint some transparent background here. */ let opacity = "0.9"; let fromPoint = { x: 0, y: 0 }; let toPoint = { x: 0, y: thisObject.container.frame.height }; fromPoint = transformThisPoint(fromPoint, thisObject.container); toPoint = transformThisPoint(toPoint, thisObject.container); browserCanvasContext.beginPath(); browserCanvasContext.rect(viewPort.visibleArea.topLeft.x, fromPoint.y, viewPort.visibleArea.topRight.x - viewPort.visibleArea.topLeft.x, toPoint.y - fromPoint.y); browserCanvasContext.fillStyle = 'rgba(' + UI_COLOR.WHITE + ', ' + opacity + ')'; browserCanvasContext.closePath(); browserCanvasContext.fill(); } function moveViewPortToCurrentDatetime() { if (INFO_LOG === true) { logger.write("[INFO] moveViewPortToCurrentDatetime -> Entering function."); } let targetPoint = { x: datetime.valueOf(), y: 0 // we wont touch the y axis here. }; /* Lets put this point in the coordinate system of the viewPort */ targetPoint = timeLineCoordinateSystem.transformThisPoint(targetPoint); targetPoint = transformThisPoint(targetPoint, thisObject.container); /* Lets get the point on the viewPort coordinate system of the center of the visible screen */ let center = { x: (viewPort.visibleArea.bottomRight.x - viewPort.visibleArea.bottomLeft.x) / 2, y: (viewPort.visibleArea.bottomRight.y - viewPort.visibleArea.topRight.y) / 2 }; /* Lets calculate the displace vector, from the point we want at the center, to the current center. */ let displaceVector = { x: center.x - targetPoint.x, y: 0 }; viewPort.displace(displaceVector); } }