function newAAMastersPlottersBollingerBandsBollingerBandsBollingerBandsPanel () { var thisObject = { fitFunction: undefined, onRecordChange: onRecordChange, container: undefined, draw: draw, getContainer: getContainer, initialize: initialize, finalize: finalize }; thisObject.container = newContainer(); thisObject.container.initialize(); thisObject.container.frame.containerName = "Bollinger Band"; let currentBand; let panelTabButton return thisObject; function finalize() { thisObject.container.finalize() thisObject.container = undefined thisObject.fitFunction = undefined currentBand = undefined panelTabButton.finalize() panelTabButton = undefined } function initialize() { thisObject.container.frame.width = UI_PANEL.WIDTH.NORMAL; thisObject.container.frame.height = UI_PANEL.HEIGHT.NORMAL; thisObject.container.frame.position.x = canvas.chartSpace.viewport.visibleArea.topRight.x - thisObject.container.frame.width * 3; thisObject.container.frame.position.y = canvas.chartSpace.viewport.visibleArea.bottomLeft.y - thisObject.container.frame.height; panelTabButton = newPanelTabButton() panelTabButton.parentContainer = thisObject.container panelTabButton.container.frame.parentFrame = thisObject.container.frame panelTabButton.fitFunction = thisObject.fitFunction panelTabButton.initialize() } function getContainer(point) { let container; container = panelTabButton.getContainer(point) if (container !== undefined) { return container } if (thisObject.container.frame.isThisPointHere(point, true) === true) { let checkPoint = { x: point.x, y: point.y } checkPoint = thisObject.fitFunction(checkPoint) if (point.x === checkPoint.x && point.y === checkPoint.y) { return thisObject.container; } } } function onRecordChange(lastCurrentBand) { currentBand = lastCurrentBand; } function draw() { thisObject.container.frame.draw(false, false, true, thisObject.fitFunction); plotCurrentBandInfo(); panelTabButton.draw() } function plotCurrentBandInfo() { if (currentBand === undefined) { return; } if (currentBand.innerBand === undefined) { return; } const frameBodyHeight = thisObject.container.frame.getBodyHeight(); const frameTitleHeight = thisObject.container.frame.height - frameBodyHeight; const X_AXIS = thisObject.container.frame.width / 2; const Y_AXIS = frameTitleHeight + frameBodyHeight / 2; var bandPoint1 = { x: X_AXIS - currentBand.bodyWidth / 2, y: Y_AXIS - currentBand.leftBodyHeight / 2 - currentBand.bottomDelta / 4 }; var bandPoint2 = { x: X_AXIS - currentBand.bodyWidth / 2, y: Y_AXIS + currentBand.leftBodyHeight / 2 - currentBand.topDelta / 4 }; var bandPoint3 = { x: X_AXIS + currentBand.bodyWidth / 2, y: Y_AXIS + currentBand.rightBodyHeight / 2 + currentBand.topDelta / 4 }; var bandPoint4 = { x: X_AXIS + currentBand.bodyWidth / 2, y: Y_AXIS - currentBand.rightBodyHeight / 2 + currentBand.bottomDelta / 4 }; /* Extra bounderies due to constrained space */ const upperLimit = frameTitleHeight + frameBodyHeight * 0.15; const downLimit = frameTitleHeight + frameBodyHeight * 0.85; if (bandPoint1.y > downLimit) { bandPoint1.y = downLimit; } if (bandPoint4.y > downLimit) { bandPoint4.y = downLimit; } if (bandPoint2.y < upperLimit) { bandPoint2.y = upperLimit; } if (bandPoint3.y < upperLimit) { bandPoint3.y = upperLimit; } bandPoint1 = thisObject.container.frame.frameThisPoint(bandPoint1); bandPoint2 = thisObject.container.frame.frameThisPoint(bandPoint2); bandPoint3 = thisObject.container.frame.frameThisPoint(bandPoint3); bandPoint4 = thisObject.container.frame.frameThisPoint(bandPoint4); bandPoint1 = thisObject.fitFunction(bandPoint1) bandPoint2 = thisObject.fitFunction(bandPoint2) bandPoint3 = thisObject.fitFunction(bandPoint3) bandPoint4 = thisObject.fitFunction(bandPoint4) browserCanvasContext.beginPath(); browserCanvasContext.moveTo(bandPoint1.x, bandPoint1.y); browserCanvasContext.lineTo(bandPoint2.x, bandPoint2.y); browserCanvasContext.lineTo(bandPoint3.x, bandPoint3.y); browserCanvasContext.lineTo(bandPoint4.x, bandPoint4.y); browserCanvasContext.closePath(); const OPACITY = '0.1'; browserCanvasContext.fillStyle = 'rgba(' + UI_COLOR.PATINATED_TURQUOISE + ', ' + OPACITY + ')'; browserCanvasContext.fill(); browserCanvasContext.beginPath(); browserCanvasContext.moveTo(bandPoint1.x, bandPoint1.y); browserCanvasContext.lineTo(bandPoint4.x, bandPoint4.y); browserCanvasContext.moveTo(bandPoint2.x, bandPoint2.y); browserCanvasContext.lineTo(bandPoint3.x, bandPoint3.y); browserCanvasContext.closePath(); browserCanvasContext.strokeStyle = 'rgba(' + UI_COLOR.PATINATED_TURQUOISE + ', 1)'; browserCanvasContext.lineWidth = 0.2; browserCanvasContext.stroke(); browserCanvasContext.beginPath(); let y1 = bandPoint1.y + (bandPoint2.y - bandPoint1.y) / 2; let y2 = bandPoint4.y - (bandPoint4.y - bandPoint3.y) / 2; browserCanvasContext.moveTo(bandPoint1.x, y1); browserCanvasContext.lineTo(bandPoint4.x, y2); browserCanvasContext.closePath(); if (y1 > y2) { browserCanvasContext.strokeStyle = 'rgba(' + UI_COLOR.PATINATED_TURQUOISE + ', 1)'; } else { browserCanvasContext.strokeStyle = 'rgba(' + UI_COLOR.RUSTED_RED + ', 1)'; } browserCanvasContext.lineWidth = 0.2; browserCanvasContext.stroke(); browserCanvasContext.beginPath(); /* put the labels with the bands values */ let y; printLabel('Moving Average', X_AXIS, frameTitleHeight + frameBodyHeight * 0.05, '1'); printLabel(currentBand.innerBand.movingAverage, X_AXIS, frameTitleHeight + frameBodyHeight * 0.10, '0.50'); printLabel('Deviation', X_AXIS, frameTitleHeight + frameBodyHeight * 0.95, '1'); printLabel(currentBand.innerBand.deviation, X_AXIS, frameTitleHeight + frameBodyHeight * 0.90, '0.50'); function printLabel(labelToPrint, x, y, opacity) { let labelPoint; let fontSize = 10; browserCanvasContext.font = fontSize + 'px ' + UI_FONT.SECONDARY + ' Saira'; let label = '' + labelToPrint; if (isNaN(label) === false) { label = Number(label).toLocaleString(); } let xOffset = label.length / 2 * fontSize * FONT_ASPECT_RATIO; labelPoint = { x: x - xOffset, y: y }; labelPoint = thisObject.container.frame.frameThisPoint(labelPoint); labelPoint = thisObject.fitFunction(labelPoint) browserCanvasContext.fillStyle = 'rgba(' + UI_COLOR.DARK + ', ' + opacity + ')'; browserCanvasContext.fillText(label, labelPoint.x, labelPoint.y); } browserCanvasContext.closePath(); browserCanvasContext.fill(); } }