    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *      http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 * Unless required by applicable law or agreed to in writing, software
    012 * distributed under the License is distributed on an "AS IS" BASIS,
    013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 * See the License for the specific language governing permissions and
    015 * limitations under the License.
    016 */
    017package org.apache.commons.imaging.formats.png;
    018
    019/**
    020 * Interlace methods.
    021 *
    022 * @see <a href="http://www.w3.org/TR/PNG/#8Interlace">Portable Network Graphics Specification - Interlacing and pass extraction</a>
    023 */
    024public enum InterlaceMethod {
    025
    026    NONE(false),
    027    ADAM7(true);
    028
    029    private final boolean progressive;
    030
    031    InterlaceMethod(final boolean progressive) {
    032        this.progressive = progressive;
    033    }
    034
    035    public boolean isProgressive() {
    036        return progressive;
    037    }
    038}