elk/composables/utils.ts
2022-11-23 07:42:20 +08:00

22 lines
601 B
TypeScript

import type { Emoji } from 'masto'
export function getDataUrlFromArr(arr: Uint8ClampedArray, w: number, h: number) {
if (typeof w === 'undefined' || typeof h === 'undefined')
w = h = Math.sqrt(arr.length / 4)
const canvas = document.createElement('canvas')
const ctx = canvas.getContext('2d')!
canvas.width = w
canvas.height = h
const imgData = ctx.createImageData(w, h)
imgData.data.set(arr)
ctx.putImageData(imgData, 0, 0)
return canvas.toDataURL()
}
export function emojisArrayToObject(emojis: Emoji[]) {
return Object.fromEntries(emojis.map(i => [i.shortcode, i]))
}