transparency.java

来自「This is a resource based on j2me embedde」· Java 代码 · 共 59 行

/*
 * @(#)Transparency.java	1.23 06/10/10
 *
 * Copyright  1990-2008 Sun Microsystems, Inc. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 only, 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 version 2 for more details (a copy is
 * included at /legal/license.txt). 
 * 
 * You should have received a copy of the GNU General Public License
 * version 2 along with this work; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA 
 * 
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 or visit www.sun.com if you need additional
 * information or have any questions. 
 *
 */

package java.awt;

/**
 * The <code>Transparency</code> interface defines the common transparency
 * modes for implementing classes.
 * @version 1.19, 08/19/02
 */
public interface Transparency {
    /**
     * Represents image data that is guaranteed to be completely opaque,
     * meaning that all pixels have an alpha value of 1.0.
     */
    public final static int OPAQUE = 1;
    /**
     * Represents image data that is guaranteed to be either completely
     * opaque, with an alpha value of 1.0, or completely transparent,
     * with an alpha value of 0.0.
     */
    public final static int BITMASK = 2;
    /**
     * Represents image data that contains or might contain arbitrary
     * alpha values between and including 0.0 and 1.0.
     */
    public final static int TRANSLUCENT = 3;
    /**
     * Returns the type of this <code>Transparency</code>.
     * @return the field type of this <code>Transparency</code>, which is
     *		either OPAQUE, BITMASK or TRANSLUCENT. 
     */
    public int getTransparency();
}