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48 lines
1.2 KiB
48 lines
1.2 KiB
2 years ago
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/*
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* @Author: 秦少卫
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* @Date: 2022-09-05 22:21:55
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* @LastEditors: 秦少卫
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* @LastEditTime: 2022-09-05 23:00:29
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* @Description: 工具文件
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*/
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import FontFaceObserver from 'fontfaceobserver'
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/**
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* @description: 图片文件转字符串
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* @param {Blob|File} file 文件
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* @return {String}
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*/
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export function getImgStr(file) {
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return new Promise((resolve, reject) => {
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try {
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const reader = new FileReader();
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reader.readAsDataURL(file);
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reader.onload = () => {
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resolve(reader.result)
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};
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} catch (error) {
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reject(error)
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}
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});
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}
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/**
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* @description: 根据json模板下载字体文件
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* @param {String} str
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* @return {Promise}
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*/
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export function downFontByJSON(str) {
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const skipFonts = ['arial', 'Microsoft YaHei']
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const fontFamilys = JSON.parse(str).objects.filter(item => {
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// 为text 并且不为包含字体
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return (item.type.includes('text') && !skipFonts.includes(item.fontFamily))
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}).map(item => item.fontFamily)
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const fontFamilysAll = fontFamilys.map(fontName => {
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const font = new FontFaceObserver(fontName);
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return font.load(null, 150000)
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})
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return Promise.all(fontFamilysAll)
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}
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