百度脑图对文字居中兼容处理

font-adjust.js

/**
 * source: https://github.com/fex-team/kityminder-core/blob/dev/src/module/text.js#L10-L127
 */

/**
     * 针对不同系统、不同浏览器、不同字体做居中兼容性处理
     * 暂时未增加Linux的处理
     */
    var FONT_ADJUST = {
        'safari': {
            '微软雅黑,Microsoft YaHei': -0.17,
            '楷体,楷体_GB2312,SimKai': -0.1,
            '隶书, SimLi': -0.1,
            'comic sans ms': -0.23,
            'impact,chicago': -0.15,
            'times new roman': -0.1,
            'arial black,avant garde': -0.17,
            'default': 0
        },
        'ie': {
            10: {
                '微软雅黑,Microsoft YaHei': -0.17,
                'comic sans ms': -0.17,
                'impact,chicago': -0.08,
                'times new roman': 0.04,
                'arial black,avant garde': -0.17,
                'default': -0.15
            },
            11: {
                '微软雅黑,Microsoft YaHei': -0.17,
                'arial,helvetica,sans-serif': -0.17,
                'comic sans ms': -0.17,
                'impact,chicago': -0.08,
                'times new roman': 0.04,
                'sans-serif': -0.16,
                'arial black,avant garde': -0.17,
                'default': -0.15
            }
        },
        'edge': {
            '微软雅黑,Microsoft YaHei': -0.15,
            'arial,helvetica,sans-serif': -0.17,
            'comic sans ms': -0.17,
            'impact,chicago': -0.08,
            'sans-serif': -0.16,
            'arial black,avant garde': -0.17,
            'default': -0.15
        },
        'sg': {
            '微软雅黑,Microsoft YaHei': -0.15,
            'arial,helvetica,sans-serif': -0.05,
            'comic sans ms': -0.22,
            'impact,chicago': -0.16,
            'times new roman': -0.03,
            'arial black,avant garde': -0.22,
            'default': -0.15
        },
        'chrome': {
            'Mac': {
                'andale mono': -0.05,
                'comic sans ms': -0.3,
                'impact,chicago': -0.13,
                'times new roman': -0.1,
                'arial black,avant garde': -0.17,
                'default': 0
            },
            'Win': {
                '微软雅黑,Microsoft YaHei': -0.15,
                'arial,helvetica,sans-serif': -0.02,
                'arial black,avant garde': -0.2,
                'comic sans ms': -0.2,
                'impact,chicago': -0.12,
                'times new roman': -0.02,
                'default': -0.15
            },
            'Lux': {
                'andale mono': -0.05,
                'comic sans ms': -0.3,
                'impact,chicago': -0.13,
                'times new roman': -0.1,
                'arial black,avant garde': -0.17,
                'default': 0
            }
        },
        'firefox': {
            'Mac': {
                '微软雅黑,Microsoft YaHei': -0.2,
                '宋体,SimSun': 0.05,
                'comic sans ms': -0.2,
                'impact,chicago': -0.15,
                'arial black,avant garde': -0.17,
                'times new roman': -0.1,
                'default': 0.05
            },
            'Win': {
                '微软雅黑,Microsoft YaHei': -0.16,
                'andale mono': -0.17,
                'arial,helvetica,sans-serif': -0.17,
                'comic sans ms': -0.22,
                'impact,chicago': -0.23,
                'times new roman': -0.22,
                'sans-serif': -0.22,
                'arial black,avant garde': -0.17,
                'default': -0.16
            },
            'Lux': {
                "宋体,SimSun": -0.2,
                "微软雅黑,Microsoft YaHei": -0.2,
                "黑体, SimHei": -0.2,
                "隶书, SimLi": -0.2,
                "楷体,楷体_GB2312,SimKai": -0.2,
                "andale mono": -0.2,
                "arial,helvetica,sans-serif": -0.2,
                "comic sans ms": -0.2,
                "impact,chicago": -0.2,
                "times new roman": -0.2,
                "sans-serif": -0.2,
                "arial black,avant garde": -0.2,
                "default": -0.16
            }
        },
    };

            var Browser = kity.Browser;
            var adjust;

            if (Browser.chrome || Browser.opera || Browser.bd ||Browser.lb === "chrome") {
                adjust = FONT_ADJUST['chrome'][Browser.platform][fontFamily];
            } else if (Browser.gecko) {
                adjust = FONT_ADJUST['firefox'][Browser.platform][fontFamily];
            } else if (Browser.sg) {
                adjust = FONT_ADJUST['sg'][fontFamily];
            } else if (Browser.safari) {
                adjust = FONT_ADJUST['safari'][fontFamily];
            } else if (Browser.ie) {
                adjust = FONT_ADJUST['ie'][Browser.version][fontFamily];
            } else if (Browser.edge) {
                adjust = FONT_ADJUST['edge'][fontFamily];
            } else if (Browser.lb) {
                // 猎豹浏览器的ie内核兼容性模式下
                adjust = 0.9;
            }