forked from Shiloh/githaven
81 lines
2.6 KiB
JavaScript
81 lines
2.6 KiB
JavaScript
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#!/usr/bin/env node
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'use strict';
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const imageminZopfli = require('imagemin-zopfli');
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const {fabric} = require('fabric');
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const {DOMParser, XMLSerializer} = require('xmldom');
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const {readFile, writeFile} = require('fs').promises;
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const {resolve} = require('path');
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function exit(err) {
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if (err) console.error(err);
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process.exit(err ? 1 : 0);
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}
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function loadSvg(svg) {
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return new Promise((resolve) => {
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fabric.loadSVGFromString(svg, (objects, options) => {
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resolve({objects, options});
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});
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});
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}
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async function generate(svg, outputFile, {size, bg, removeDetail} = {}) {
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const parser = new DOMParser();
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const serializer = new XMLSerializer();
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const document = parser.parseFromString(svg);
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if (removeDetail) {
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for (const el of Array.from(document.getElementsByTagName('g') || [])) {
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for (const attribute of Array.from(el.attributes || [])) {
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if (attribute.name === 'class' && attribute.value === 'detail-remove') {
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el.parentNode.removeChild(el);
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}
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}
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}
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}
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svg = serializer.serializeToString(document);
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const {objects, options} = await loadSvg(svg);
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const canvas = new fabric.Canvas();
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canvas.setDimensions({width: size, height: size});
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const ctx = canvas.getContext('2d');
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ctx.scale(options.width ? (size / options.width) : 1, options.height ? (size / options.height) : 1);
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if (bg) {
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canvas.add(new fabric.Rect({
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left: 0,
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top: 0,
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height: size * (1 / (size / options.height)),
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width: size * (1 / (size / options.width)),
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fill: 'white',
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}));
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}
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canvas.add(fabric.util.groupSVGElements(objects, options));
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canvas.renderAll();
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let png = Buffer.from([]);
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for await (const chunk of canvas.createPNGStream()) {
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png = Buffer.concat([png, chunk]);
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}
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png = await imageminZopfli({more: true})(png);
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await writeFile(outputFile, png);
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}
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async function main() {
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const svg = await readFile(resolve(__dirname, '../assets/logo.svg'), 'utf8');
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await generate(svg, resolve(__dirname, '../public/img/gitea-lg.png'), {size: 880});
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await generate(svg, resolve(__dirname, '../public/img/gitea-512.png'), {size: 512});
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await generate(svg, resolve(__dirname, '../public/img/gitea-192.png'), {size: 192});
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await generate(svg, resolve(__dirname, '../public/img/gitea-sm.png'), {size: 120});
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await generate(svg, resolve(__dirname, '../public/img/avatar_default.png'), {size: 200});
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await generate(svg, resolve(__dirname, '../public/img/favicon.png'), {size: 180, removeDetail: true});
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await generate(svg, resolve(__dirname, '../public/img/apple-touch-icon.png'), {size: 180, bg: true});
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}
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main().then(exit).catch(exit);
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