engineN/public/theme/plugins/c3/src/title.js

import {
    ChartInternal
} from './core';

ChartInternal.prototype.initTitle = function () {
    var $$ = this;
    $$.title = $$.svg.append("text")
        .text($$.config.title_text)
        .attr("class", $$.CLASS.title);
};
ChartInternal.prototype.redrawTitle = function () {
    var $$ = this;
    $$.title
        .attr("x", $$.xForTitle.bind($$))
        .attr("y", $$.yForTitle.bind($$));
};
ChartInternal.prototype.xForTitle = function () {
    var $$ = this,
        config = $$.config,
        position = config.title_position || 'left',
        x;
    if (position.indexOf('right') >= 0) {
        x = $$.currentWidth - $$.getTextRect($$.title.node().textContent, $$.CLASS.title, $$.title.node()).width - config.title_padding.right;
    } else if (position.indexOf('center') >= 0) {
        x = ($$.currentWidth - $$.getTextRect($$.title.node().textContent, $$.CLASS.title, $$.title.node()).width) / 2;
    } else { // left
        x = config.title_padding.left;
    }
    return x;
};
ChartInternal.prototype.yForTitle = function () {
    var $$ = this;
    return $$.config.title_padding.top + $$.getTextRect($$.title.node().textContent, $$.CLASS.title, $$.title.node()).height;
};
ChartInternal.prototype.getTitlePadding = function () {
    var $$ = this;
    return $$.yForTitle() + $$.config.title_padding.bottom;
};