Rework 'make generate-images' (#12316)
* Rework 'make generate-images' - Remove external dependencies and replace it with a node script that does does the same. - Move detail removal from gitea-sm.png to favicon.png - Remove favicon.ico and its generation, it is unused and we already serve favicon.png in its place. Fixes: https://github.com/go-gitea/gitea/issues/12314 * use proper centering value for preserveAspectRatio * fix lint * use fabric * better linting fix * fix typo * mention detail-remove class in docspull/12328/head^2
silverwind
4 years ago
committed by
GitHub
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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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