ultraviolet/style_color.go

package ultraviolet

import (
	"strconv"
	"strings"
)

type Color struct {
	Red   int
	Green int
	Blue  int
	Alpha int
}

func ColorFromHex(value string) Color {
	if len(value) != 8 {
		return Color{}
	}

	if !strings.HasPrefix(value, "0x") {
		return Color{}
	}

	red, err := strconv.ParseInt(value[2:4], 16, 16)
	if err != nil {
		return Color{}
	}

	green, err := strconv.ParseInt(value[4:6], 16, 16)
	if err != nil {
		return Color{}
	}

	blue, err := strconv.ParseInt(value[6:8], 16, 16)
	if err != nil {
		return Color{}
	}

	return Color{
		Red:   int(red),
		Green: int(green),
		Blue:  int(blue),
		Alpha: 255,
	}
}