code.gitea.io/gitea@v1.22.3/tools/generate-images.js (about)

     1  #!/usr/bin/env node
     2  import imageminZopfli from 'imagemin-zopfli'; // eslint-disable-line i/no-unresolved
     3  import {loadSVGFromString, Canvas, Rect, util} from 'fabric/node'; // eslint-disable-line i/no-unresolved
     4  import {optimize} from 'svgo';
     5  import {readFile, writeFile} from 'node:fs/promises';
     6  import {argv, exit} from 'node:process';
     7  
     8  function doExit(err) {
     9    if (err) console.error(err);
    10    exit(err ? 1 : 0);
    11  }
    12  
    13  async function generate(svg, path, {size, bg}) {
    14    const outputFile = new URL(path, import.meta.url);
    15  
    16    if (String(outputFile).endsWith('.svg')) {
    17      const {data} = optimize(svg, {
    18        plugins: [
    19          'preset-default',
    20          'removeDimensions',
    21          {
    22            name: 'addAttributesToSVGElement',
    23            params: {attributes: [{width: size}, {height: size}]},
    24          },
    25        ],
    26      });
    27      await writeFile(outputFile, data);
    28      return;
    29    }
    30  
    31    const {objects, options} = await loadSVGFromString(svg);
    32    const canvas = new Canvas();
    33    canvas.setDimensions({width: size, height: size});
    34    const ctx = canvas.getContext('2d');
    35    ctx.scale(options.width ? (size / options.width) : 1, options.height ? (size / options.height) : 1);
    36  
    37    if (bg) {
    38      canvas.add(new Rect({
    39        left: 0,
    40        top: 0,
    41        height: size * (1 / (size / options.height)),
    42        width: size * (1 / (size / options.width)),
    43        fill: 'white',
    44      }));
    45    }
    46  
    47    canvas.add(util.groupSVGElements(objects, options));
    48    canvas.renderAll();
    49  
    50    let png = Buffer.from([]);
    51    for await (const chunk of canvas.createPNGStream()) {
    52      png = Buffer.concat([png, chunk]);
    53    }
    54  
    55    png = await imageminZopfli({more: true})(png);
    56    await writeFile(outputFile, png);
    57  }
    58  
    59  async function main() {
    60    const gitea = argv.slice(2).includes('gitea');
    61    const logoSvg = await readFile(new URL('../assets/logo.svg', import.meta.url), 'utf8');
    62    const faviconSvg = await readFile(new URL('../assets/favicon.svg', import.meta.url), 'utf8');
    63  
    64    await Promise.all([
    65      generate(logoSvg, '../public/assets/img/logo.svg', {size: 32}),
    66      generate(logoSvg, '../public/assets/img/logo.png', {size: 512}),
    67      generate(faviconSvg, '../public/assets/img/favicon.svg', {size: 32}),
    68      generate(faviconSvg, '../public/assets/img/favicon.png', {size: 180}),
    69      generate(logoSvg, '../public/assets/img/avatar_default.png', {size: 200}),
    70      generate(logoSvg, '../public/assets/img/apple-touch-icon.png', {size: 180, bg: true}),
    71      gitea && generate(logoSvg, '../public/assets/img/gitea.svg', {size: 32}),
    72    ]);
    73  }
    74  
    75  try {
    76    doExit(await main());
    77  } catch (err) {
    78    doExit(err);
    79  }