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最近有客户反馈,在不同的语言环境(浏览器中英文环境)下,字体的文本宽度不一致。
调研之后发现,是自定义字体在浏览器中没有生效的原因。
本文将详细介绍出现此问题的原因以及解决方案。
为便于理解, 在网上下载一个免费英文字体(字体易区分)作为示例,如下图:
1、设置Chrome为中文环境,导入ssjson至 在线表格编辑器
如下图:
从上图可以明显的看出,虽然工具栏显示的字体为 Aclonica,但实际浏览器渲染出的字体并不是 Aclonica。
这是因为浏览器查询到系统没有此字体时,会自动选择备选字体使文本能够顺利渲染。
而 SpreadJS 只是提供了字体信息,对于浏览器字体的渲染是无法控制的,
不管是工具栏字体显示为Aclonica,还是 getStyle().font()
获取到的字体信息,都是由 json 提供的,与浏览器字体的渲染无关。
导入ssjson后,双击列B竖线(使列B自使用列宽),此时使用 getColumnWidth()
获取B列的实际宽度,如上图。
2、修改Chrome为英文环境,再次导入ssjson至在线表格编辑器,结果如下图:
同上,英文环境下浏览器也选用了备选字体,并且与中文环境下有所不同,所以获取的实际列宽也与中文环境不一致。
3、如何解决这个问题呢?我们将 Aclonica 字体在系统中安装就可以了。
安装完毕后再来测试:
很明显,现在文本显示已经是我们想要的字体了。
4、注意:使用自定义字体时一定不要将名称写错(多写、少写、加空格),不然会导致字体匹配不上,最后仍无法渲染该字体。
5、如果每一个用户电脑上都要安装此字体,岂不是太麻烦了吗?
所以我们也可以通过 web font 添加字体,使用字体的 base64 编码或者直接引入字体文件,
使用户在加载网页时,浏览器能够根据css信息渲染相应的字体。
文中的ssjson参考该链接。
作者: GrapeCity China | 审核:AlexZ | 更新时间:2023.09.26