img_gen_pacakgeColors.go

package colors
 
import (
  "image/color"
  "strconv"
)
 
type rgb struct {
  red  uint8
  green uint8
  blue  uint8
}
 
func ToRGBA(h string) (color.RGBA, error) {
  rgb, err := hex2RGB(h)
  if err != nil {
    return color.RGBA{}, err
  }

  return color.RGBA{R: rgb.red, G: rgb.green, B: rgb.blue, A: 255}, nil
}
 
func hex2RGB(hex string) (rgb, error) {
  values, err := strconv.ParseUint(hex, 16, 32)
  if err != nil {
    return rgb{}, err
  }
 
  return rgb{
    red:  uint8(values >> 16),
    green: uint8((values >> 8) & 0xFF),
    blue:  uint8(values & 0xFF),
  }, nil
}