Android Color Contrast Algo

gistfile1.txt

public void exportColor(int flags) {
    if ((flags & leaveValue) == 0 && valueElement != null) {
        // Implement your logic for handling valueElement
    }

    String value = toString();
    if (caps) {
        value = value.toUpperCase();
    }
    if (hash) {
        value = "#" + value;
    }
    if (valueElement != null) {
        valueElement.setText(value);
    }

    if ((flags & leaveStyle) == 0 && styleElement != null) {
        styleElement.setBackgroundResource(0);
        styleElement.setBackgroundColor(Color.parseColor("#" + toString()));
        double luminance = 0.213 * rgb[0] + 0.715 * rgb[1] + 0.072 * rgb[2];
        int textColor = luminance < 0.5 ? Color.WHITE : Color.BLACK;
        styleElement.setTextColor(textColor);
    }

    if ((flags & leavePad) == 0 && isPickerOwner()) {
        redrawPad();
    }

    if ((flags & leaveSld) == 0 && isPickerOwner()) {
        redrawSld();
    }
}