Function cleanPoint

src/components/fx/hover.js:2160–2255

(d, hovermode)

}

function cleanPoint(d, hovermode) {
    var index = d.index;
    var trace = d.trace || {};
    var cd0 = d.cd[0];
    var cd = d.cd[index] || {};

    function pass(v) {
        return v || (isNumeric(v) && v === 0);
    }

    var getVal = Array.isArray(index)
        ? function (calcKey, traceKey) {
              var v = Lib.castOption(cd0, index, calcKey);
              return pass(v) ? v : Lib.extractOption({}, trace, '', traceKey);
          }
        : function (calcKey, traceKey) {
              return Lib.extractOption(cd, trace, calcKey, traceKey);
          };

    function fill(key, calcKey, traceKey) {
        var val = getVal(calcKey, traceKey);
        if (pass(val)) d[key] = val;
    }

    fill('hoverinfo', 'hi', 'hoverinfo');
    fill('bgcolor', 'hbg', 'hoverlabel.bgcolor');
    fill('borderColor', 'hbc', 'hoverlabel.bordercolor');
    fill('fontFamily', 'htf', 'hoverlabel.font.family');
    fill('fontSize', 'hts', 'hoverlabel.font.size');
    fill('fontColor', 'htc', 'hoverlabel.font.color');
    fill('fontWeight', 'htw', 'hoverlabel.font.weight');
    fill('fontStyle', 'hty', 'hoverlabel.font.style');
    fill('fontVariant', 'htv', 'hoverlabel.font.variant');
    fill('nameLength', 'hnl', 'hoverlabel.namelength');
    fill('textAlign', 'hta', 'hoverlabel.align');

    d.posref =
        hovermode === 'y' || (hovermode === 'closest' && trace.orientation === 'h')
            ? d.xa._offset + (d.x0 + d.x1) / 2
            : d.ya._offset + (d.y0 + d.y1) / 2;

    // then constrain all the positions to be on the plot
    d.x0 = Lib.constrain(d.x0, 0, d.xa._length);
    d.x1 = Lib.constrain(d.x1, 0, d.xa._length);
    d.y0 = Lib.constrain(d.y0, 0, d.ya._length);
    d.y1 = Lib.constrain(d.y1, 0, d.ya._length);

    // and convert the x and y label values into formatted text
    if (d.xLabelVal !== undefined) {
        d.xLabel = 'xLabel' in d ? d.xLabel : Axes.hoverLabelText(d.xa, d.xLabelVal, trace.xhoverformat);
        d.xVal = d.xa.c2d(d.xLabelVal);
    }
    if (d.yLabelVal !== undefined) {
        d.yLabel = 'yLabel' in d ? d.yLabel : Axes.hoverLabelText(d.ya, d.yLabelVal, trace.yhoverformat);
        d.yVal = d.ya.c2d(d.yLabelVal);
    }

    // Traces like heatmaps generate the zLabel in their hoverPoints function