Charts: Is there a way to round the corners of the BalloonMarker?

[emildesign]

I want to add small rounded corners on the marker label, is it support?

[liuxuan30]

I just remember someone posted code about this but couldn't find it right now. Please try search. If I was wrong, then you have to draw the rounding thing by yourself.

[spyroid]

I want to add small rounded corners on the marker label, is it support?

 open override func draw(context: CGContext, point: CGPoint) {
        guard let label = label else { return }

        let offset = self.offsetForDrawing(atPoint: point)
        let size = self.size

        var rect = CGRect(
            origin: CGPoint(
                x: point.x + offset.x,
                y: point.y + offset.y),
            size: size)
        rect.origin.x -= size.width / 2.0
        rect.origin.y -= size.height

        context.saveGState()

        context.setFillColor(color.cgColor)

        if offset.y > 0 {

            context.beginPath()
            let rect2 = CGRect(x: rect.origin.x, y: rect.origin.y + arrowSize.height, width: rect.size.width, height: rect.size.height - arrowSize.height)
            let clipPath = UIBezierPath(roundedRect: rect2, cornerRadius: 5.0).cgPath
            context.addPath(clipPath)
            context.closePath()
            context.fillPath()

            // arraow vertex
            context.beginPath()
            let p1 = CGPoint(x: rect.origin.x + rect.size.width / 2.0 - arrowSize.width / 2.0, y: rect.origin.y + arrowSize.height + 1)
            context.move(to: p1)
            context.addLine(to: CGPoint(x: p1.x + arrowSize.width, y: p1.y))
            context.addLine(to: CGPoint(x: point.x, y: point.y))
            context.addLine(to: p1)

            context.fillPath()

        } else {
            context.beginPath()
            let rect2 = CGRect(x: rect.origin.x, y: rect.origin.y, width: rect.size.width, height: rect.size.height - arrowSize.height)
            let clipPath = UIBezierPath(roundedRect: rect2, cornerRadius: 5.0).cgPath
            context.addPath(clipPath)
            context.closePath()
            context.fillPath()

            // arraow vertex
            context.beginPath()
            let p1 = CGPoint(x: rect.origin.x + rect.size.width / 2.0 - arrowSize.width / 2.0, y: rect.origin.y + rect.size.height - arrowSize.height - 1)
            context.move(to: p1)
            context.addLine(to: CGPoint(x: p1.x + arrowSize.width, y: p1.y))
            context.addLine(to: CGPoint(x: point.x, y: point.y))
            context.addLine(to: p1)

            context.fillPath()
        }

        if offset.y > 0 {
            rect.origin.y += self.insets.top + arrowSize.height
        } else {
            rect.origin.y += self.insets.top
        }

        rect.size.height -= self.insets.top + self.insets.bottom

        UIGraphicsPushContext(context)

        label.draw(in: rect, withAttributes: _drawAttributes)

        UIGraphicsPopContext()

        context.restoreGState()
    }