echarts/src/model/mixin/textStyle.js

A powerful charting and visualization library for browser

import * as textContain from 'zrender/src/contain/text';
import * as graphicUtil from '../../util/graphic';

var PATH_COLOR = ['textStyle', 'color'];

export default {
    /**
     * Get color property or get color from option.textStyle.color
     * @param {boolean} [isEmphasis]
     * @return {string}
     */
    getTextColor: function (isEmphasis) {
        var ecModel = this.ecModel;
        return this.getShallow('color')
            || (
                (!isEmphasis && ecModel) ? ecModel.get(PATH_COLOR) : null
            );
    },

    /**
     * Create font string from fontStyle, fontWeight, fontSize, fontFamily
     * @return {string}
     */
    getFont: function () {
        return graphicUtil.getFont({
            fontStyle: this.getShallow('fontStyle'),
            fontWeight: this.getShallow('fontWeight'),
            fontSize: this.getShallow('fontSize'),
            fontFamily: this.getShallow('fontFamily')
        }, this.ecModel);
    },

    getTextRect: function (text) {
        return textContain.getBoundingRect(
            text,
            this.getFont(),
            this.getShallow('align'),
            this.getShallow('verticalAlign') || this.getShallow('baseline'),
            this.getShallow('padding'),
            this.getShallow('rich'),
            this.getShallow('truncateText')
        );
    }
};