File size: 946 Bytes
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const checkboardCache = {}
export const render = (c1, c2, size, serverCanvas) => {
if (typeof document === 'undefined' && !serverCanvas) {
return null
}
const canvas = serverCanvas ? new serverCanvas() : document.createElement('canvas')
canvas.width = size * 2
canvas.height = size * 2
const ctx = canvas.getContext('2d')
if (!ctx) {
return null
} // If no context can be found, return early.
ctx.fillStyle = c1
ctx.fillRect(0, 0, canvas.width, canvas.height)
ctx.fillStyle = c2
ctx.fillRect(0, 0, size, size)
ctx.translate(size, size)
ctx.fillRect(0, 0, size, size)
return canvas.toDataURL()
}
export const get = (c1, c2, size, serverCanvas) => {
const key = `${ c1 }-${ c2 }-${ size }${ serverCanvas ? '-server' : '' }`
if (checkboardCache[key]) {
return checkboardCache[key]
}
const checkboard = render(c1, c2, size, serverCanvas)
checkboardCache[key] = checkboard
return checkboard
}
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