112 lines
2.4 KiB
JavaScript
112 lines
2.4 KiB
JavaScript
import data from '../../data'
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const SKINS = [
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'1F3FA', '1F3FB', '1F3FC',
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'1F3FD', '1F3FE', '1F3FF',
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]
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var blankDataURL, canvas, context
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function unifiedToNative(unified) {
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var unicodes = unified.split('-'),
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codePoints = unicodes.map((u) => `0x${u}`)
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return String.fromCodePoint(...codePoints)
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}
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function clearCanvas() {
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if (!canvas) {
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canvas = document.createElement('canvas')
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canvas.width = canvas.height = 2
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context = canvas.getContext('2d')
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context.font = '2px Arial'
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context.textBaseline = 'top'
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blankDataURL = canvas.toDataURL()
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}
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context.clearRect(0, 0, canvas.width, canvas.height)
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}
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function nativeIsSupported() {
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if (typeof document == 'undefined') return true
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var data = getSanitizedData(...arguments),
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{ native } = data
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clearCanvas()
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context.fillText(native, 0, 0)
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return blankDataURL != canvas.toDataURL()
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}
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function sanitize(emoji) {
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var { name, short_names, skin_tone, skin_variations, emoticons, unified } = emoji,
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id = short_names[0],
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colons = `:${id}:`
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if (skin_tone) {
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colons += `:skin-tone-${skin_tone}:`
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}
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return {
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id,
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name,
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colons,
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emoticons,
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skin: skin_tone || skin_variations ? 1 : null,
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native: unifiedToNative(unified),
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}
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}
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function getSanitizedData() {
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return sanitize(getData(...arguments))
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}
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function getData(emoji, skin, sheetURL) {
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var emojiData = {}
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if (typeof emoji == 'string') {
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emojiData = data.emojis[emoji]
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} else if (emoji.id) {
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emojiData = data.emojis[emoji.id]
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skin || (skin = emoji.skin)
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}
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if (emojiData.skin_variations && skin > 1 && sheetURL) {
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emojiData = JSON.parse(JSON.stringify(emojiData))
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var skinKey = SKINS[skin - 1],
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variationKey = `${emojiData.unified}-${skinKey}`,
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variationData = emojiData.skin_variations[variationKey],
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kitMatches = sheetURL.match(/(apple|google|twitter|emojione)/),
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kit = kitMatches[0]
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if (variationData[`has_img_${kit}`]) {
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emojiData.skin_tone = skin
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for (let k in variationData) {
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let v = variationData[k]
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emojiData[k] = v
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}
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}
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}
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return emojiData
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}
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function intersect(a, b) {
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var aSet = new Set(a),
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bSet = new Set(b),
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intersection = null
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intersection = new Set(
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[...aSet].filter(x => bSet.has(x))
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)
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return Array.from(intersection)
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}
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export { getData, getSanitizedData, intersect, nativeIsSupported }
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