package.src.components.fx.hoverlabel_defaults.js Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of plotly.js Show documentation

The open source javascript graphing library that powers plotly

The newest version!

'use strict';

var Lib = require('../../lib');
var Color = require('../color');
var isUnifiedHover = require('./helpers').isUnifiedHover;

module.exports = function handleHoverLabelDefaults(contIn, contOut, coerce, opts) {
    opts = opts || {};

    var hasLegend = contOut.legend;

    function inheritFontAttr(attr) {
        if(!opts.font[attr]) {
            opts.font[attr] = hasLegend ? contOut.legend.font[attr] : contOut.font[attr];
        }
    }

    // In unified hover, inherit from layout.legend if available or layout
    if(contOut && isUnifiedHover(contOut.hovermode)) {
        if(!opts.font) opts.font = {};
        inheritFontAttr('size');
        inheritFontAttr('family');
        inheritFontAttr('color');
        inheritFontAttr('weight');
        inheritFontAttr('style');
        inheritFontAttr('variant');

        if(hasLegend) {
            if(!opts.bgcolor) opts.bgcolor = Color.combine(contOut.legend.bgcolor, contOut.paper_bgcolor);
            if(!opts.bordercolor) opts.bordercolor = contOut.legend.bordercolor;
        } else {
            if(!opts.bgcolor) opts.bgcolor = contOut.paper_bgcolor;
        }
    }

    coerce('hoverlabel.bgcolor', opts.bgcolor);
    coerce('hoverlabel.bordercolor', opts.bordercolor);
    coerce('hoverlabel.namelength', opts.namelength);
    Lib.coerceFont(coerce, 'hoverlabel.font', opts.font);
    coerce('hoverlabel.align', opts.align);
};