EmoticonGifImageView.java 文件源码

/**
 * Get the dark color.
 *
 * @param color Original color.
 * @return Dark color.
 */
@ColorInt
private static int getDarkColor(final int color) {
    final float factor = 0.6f;

    final int a = Color.alpha(color);
    final int r = Math.round(Color.red(color) * factor);
    final int g = Math.round(Color.green(color) * factor);
    final int b = Math.round(Color.blue(color) * factor);
    return Color.argb(a,
            Math.min(r, 255),
            Math.min(g, 255),
            Math.min(b, 255));
}