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/*
 * Copyright (C) 2012.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 or
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */

package uk.me.parabola.imgfmt.app.typ;

/**
 * Interface for adding an alpha value to a previously saved colour value.
 *
 * The current TYP editors place the alpha value after the colour definition, eg:
 *
 *   "#992299" alpha 5
 *
 * so we need to add the alpha value to a colour that has already been read
 * in.
 *
 * @author Steve Ratcliffe
 */

public interface AlphaAdder {

        /**
         * Add an alpha value to the last colour that was saved.
         *
         * @param alpha A true alpha value ie 0 is transparent, 255 opaque.
         */

        public void addAlpha(int alpha);
}