function colorToRgba(input: string): string {
let int32Color = normalizeColor(input);
if (int32Color === null) {
return input;
}
int32Color = int32Color || 0;
const r = (int32Color & 0xff000000) >>> 24;
const g = (int32Color & 0x00ff0000) >>> 16;
const b = (int32Color & 0x0000ff00) >>> 8;
const a = (int32Color & 0x000000ff) / 255;
return `rgba(${r}, ${g}, ${b}, ${a})`;
}
const processColor = (color: ?(string | number), opacity: number = 1) => {
if (
color === undefined ||
color === null ||
(opacity === 1 && typeof color === 'string' && color.charAt(0) !== '#')
) {
return color;
}
// convert number and hex
const int32Color = normalizeColor(color);
if (int32Color === null) {
return undefined;
}
// convert 0xrrggbbaa into rgba
const rgba = normalizeColor.rgba(int32Color);
rgba.a = rgba.a.toFixed(1);
const { r, g, b, a } = rgba;
return `rgba(${r},${g},${b},${a * opacity})`;
};