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https://github.com/mauriceboe/TREK.git
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Maurice
7572c610a6
The shells still carried Capacitor's placeholder icon and splash, the blue X on a grid. They now show the white TREK mark on a dark, slightly glassy tile: a soft light from the top left and a sheen over the upper half, in the app's launch colour #09090b. Android 12+ draws its launch screen on the same colour instead of light grey. scripts/generate-app-icons.mjs renders the sources into assets/ from public/icons/icon-white.svg, and `npm run icons:app` turns them into every size both platforms ask for through @capacitor/assets. The Android foreground mark is sized for the adaptive icon's round mask. The home screen label is TREK: the old "TREK - Plan your trips!" was cut off under the icon, and the longer title belongs to the store listings.
105 lines
4.8 KiB
JavaScript
105 lines
4.8 KiB
JavaScript
/**
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* Renders the native apps' icon and splash sources into assets/, from the
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* white TREK mark in public/icons/icon-white.svg. `npx @capacitor/assets
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* generate --android --ios` then turns them into every size both platforms
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* ask for (see the icons:app script).
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*
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* The look: a dark, slightly glassy tile (a soft light from the top left and a
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* sheen over the upper half) under the white mark. Dark because that is the
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* app's launch background (#09090b) and its default scheme.
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*
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* Android's adaptive icon masks the foreground to a circle inside the
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* canvas, so the mark there sits smaller than on the iOS tile.
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*/
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import { mkdirSync, readFileSync } from 'fs'
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import { dirname, join } from 'path'
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import { fileURLToPath } from 'url'
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import sharp from 'sharp'
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const clientDir = join(dirname(fileURLToPath(import.meta.url)), '..')
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const outDir = join(clientDir, 'assets')
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mkdirSync(outDir, { recursive: true })
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const source = readFileSync(join(clientDir, 'public', 'icons', 'icon-white.svg'), 'utf8')
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const markPath = [...source.matchAll(/<path d="([^"]+)"/g)].map((m) => m[1]).find((d) => d.length > 500)
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if (!markPath) throw new Error('No mark path found in icon-white.svg')
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// The mark's extent inside its 1500 x 1500 viewBox.
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const MARK = { x: 40, y: 5, w: 1420, h: 1490 }
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const LAUNCH_BG = '#09090b'
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function tile(size) {
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return `<svg xmlns="http://www.w3.org/2000/svg" width="${size}" height="${size}" viewBox="0 0 1024 1024">
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<defs>
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<linearGradient id="base" x1="0" y1="0" x2="1" y2="1">
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<stop offset="0" stop-color="#2a2a31"/>
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<stop offset="0.55" stop-color="#141418"/>
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<stop offset="1" stop-color="#08080a"/>
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</linearGradient>
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<radialGradient id="light" cx="0.22" cy="0.12" r="0.75">
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<stop offset="0" stop-color="#ffffff" stop-opacity="0.20"/>
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<stop offset="0.45" stop-color="#ffffff" stop-opacity="0.05"/>
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<stop offset="1" stop-color="#ffffff" stop-opacity="0"/>
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</radialGradient>
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<linearGradient id="sheen" x1="0" y1="0" x2="0" y2="1">
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<stop offset="0" stop-color="#ffffff" stop-opacity="0.10"/>
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<stop offset="0.48" stop-color="#ffffff" stop-opacity="0.03"/>
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<stop offset="0.5" stop-color="#ffffff" stop-opacity="0"/>
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</linearGradient>
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<radialGradient id="depth" cx="0.8" cy="0.95" r="0.7">
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<stop offset="0" stop-color="#000000" stop-opacity="0.35"/>
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<stop offset="1" stop-color="#000000" stop-opacity="0"/>
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</radialGradient>
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</defs>
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<rect width="1024" height="1024" fill="url(#base)"/>
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<rect width="1024" height="1024" fill="url(#depth)"/>
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<rect width="1024" height="1024" fill="url(#light)"/>
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<rect width="1024" height="1024" fill="url(#sheen)"/>
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</svg>`
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}
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/** The white mark, `share` of the canvas tall, centred, with a soft shadow for depth. */
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function mark(size, share, shadow = true) {
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const scale = (1024 * share) / MARK.h
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const w = MARK.w * scale
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const h = MARK.h * scale
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const tx = (1024 - w) / 2 - MARK.x * scale
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const ty = (1024 - h) / 2 - MARK.y * scale
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return `<svg xmlns="http://www.w3.org/2000/svg" width="${size}" height="${size}" viewBox="0 0 1024 1024">
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<defs>
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<linearGradient id="ink" x1="0" y1="0" x2="0" y2="1">
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<stop offset="0" stop-color="#ffffff"/>
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<stop offset="1" stop-color="#e7e7ec"/>
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</linearGradient>
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<filter id="lift" x="-20%" y="-20%" width="140%" height="140%">
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<feDropShadow dx="0" dy="14" stdDeviation="22" flood-color="#000000" flood-opacity="0.45"/>
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</filter>
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</defs>
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<g ${shadow ? 'filter="url(#lift)"' : ''}>
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<path transform="translate(${tx} ${ty}) scale(${scale})" fill="url(#ink)" d="${markPath}"/>
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</g>
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</svg>`
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}
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async function render(svg, file) {
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await sharp(Buffer.from(svg)).png().toFile(join(outDir, file))
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}
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async function composite(background, overlay, file, size) {
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const base = await sharp(Buffer.from(background)).resize(size, size).png().toBuffer()
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const top = await sharp(Buffer.from(overlay)).resize(size, size).png().toBuffer()
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await sharp(base).composite([{ input: top }]).flatten({ background: LAUNCH_BG }).png().toFile(join(outDir, file))
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}
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// iOS and store listings: one opaque tile, the mark at about half its height.
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await composite(tile(1024), mark(1024, 0.5), 'icon-only.png', 1024)
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// Android adaptive icon: the two layers apart, the mark inside the safe circle.
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await render(tile(1024), 'icon-background.png')
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await render(mark(1024, 0.58), 'icon-foreground.png')
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// Splash: the launch background with the mark, light and dark alike.
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const splashBg = `<svg xmlns="http://www.w3.org/2000/svg" width="2732" height="2732"><rect width="2732" height="2732" fill="${LAUNCH_BG}"/></svg>`
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await composite(splashBg, mark(2732, 0.2, false), 'splash.png', 2732)
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await composite(splashBg, mark(2732, 0.2, false), 'splash-dark.png', 2732)
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console.log(`[app-icons] wrote icon and splash sources to ${outDir}`)
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