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="https://www.w3.org/TR/png/#8Interlace">Portable Network Graphics Specification - Interlacing and pass extraction</a>
023 */
024public enum InterlaceMethod {
025
026    NONE(false), ADAM7(true);
027
028    private final boolean progressive;
029
030    InterlaceMethod(final boolean progressive) {
031        this.progressive = progressive;
032    }
033
034    public boolean isProgressive() {
035        return progressive;
036    }
037}