package ui

import (
	"github.com/minio/highwayhash"
	"opslag.de/schobers/geom"
)

type desiredSizeCache struct {
	sum  [32]byte
	size geom.PointF32
}

func (c *desiredSizeCache) Update(ctx Context, data string, calcFn func(Context) geom.PointF32) geom.PointF32 {
	var key = [32]byte{}
	sum := highwayhash.Sum([]byte(data), key[:])
	if c.sum != sum {
		c.size = calcFn(ctx)
		c.sum = sum
	}
	return c.size
}