@bluecateng/pelagos-charts/dist/charts/updateHint.js

Chart components

const {
  abs
} = Math;
export default (vertical, chartX, chartY, chartWidth, chartHeight, currentPosition, offset, width, plotLeft, plotBottom, setHintData, hint, ruler) => {
  if (abs(vertical ? chartX - currentPosition : chartY - currentPosition) <= offset) {
    let left, right, top, bottom;
    if (chartX < (width - plotLeft) / 2) {
      left = chartX + 10;
    } else {
      right = chartWidth - chartX + 8;
    }
    if (chartY < plotBottom / 2) {
      top = chartY - 12;
    } else {
      bottom = chartHeight - chartY - 12;
    }
    setHintData({
      visible: true,
      style: {
        left,
        right,
        top,
        bottom
      },
      content: hint
    });
    ruler.style.opacity = 1;
  } else {
    setHintData(hintData => ({
      ...hintData,
      visible: false
    }));
    ruler.style.opacity = 0;
  }
};