Function stylePoints

src/components/legend/style.js:168–274

(d)

    }

    function stylePoints(d) {
        var styleGuide = getStyleGuide(d);
        var anyFill = styleGuide.anyFill;
        var anyLine = styleGuide.anyLine;
        var showLine = styleGuide.showLine;
        var showMarker = styleGuide.showMarker;

        var d0 = d[0];
        var trace = d0.trace;
        var showText = !showMarker && !anyLine && !anyFill && subTypes.hasText(trace);
        var dMod, tMod;

        // 'scatter3d' don't use gd.calcdata,
        // use d0.trace to infer arrayOk attributes

        function boundVal(attrIn, arrayToValFn, bounds, cst) {
            var valIn = Lib.nestedProperty(trace, attrIn).get();
            var valToBound = Lib.isArrayOrTypedArray(valIn) && arrayToValFn ? arrayToValFn(valIn) : valIn;

            if (constantItemSizing && valToBound && cst !== undefined) {
                valToBound = cst;
            }

            if (bounds) {
                if (valToBound < bounds[0]) return bounds[0];
                else if (valToBound > bounds[1]) return bounds[1];
            }
            return valToBound;
        }

        function pickFirst(array) {
            if (d0._distinct && d0.index && array[d0.index]) return array[d0.index];
            return array[0];
        }

        // constrain text, markers, etc so they'll fit on the legend
        if (showMarker || showText || showLine) {
            var dEdit = {};
            var tEdit = {};

            if (showMarker) {
                dEdit.mc = boundVal('marker.color', pickFirst);
                dEdit.mx = boundVal('marker.symbol', pickFirst);
                dEdit.mo = boundVal('marker.opacity', Lib.mean, [0.2, 1]);
                dEdit.mlc = boundVal('marker.line.color', pickFirst);
                dEdit.mlw = boundVal('marker.line.width', Lib.mean, [0, 5], CST_MARKER_LINE_WIDTH);
                // TODO: Remove this check in next major version
                // Use 'solid' for shapes to match existing behavior
                dEdit.mld = trace._isShape ? 'solid' : boundVal('marker.line.dash', pickFirst);
                tEdit.marker = {
                    sizeref: 1,
                    sizemin: 1,
                    sizemode: 'diameter'
                };

                var ms = boundVal('marker.size', Lib.mean, [2, 16], CST_MARKER_SIZE);
                dEdit.ms = ms;
                tEdit.marker.size = ms;