1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.imaging.formats.png;
18
19 /**
20 * Interlace methods.
21 *
22 * @see <a href="https://www.w3.org/TR/png/#8Interlace">Portable Network Graphics Specification - Interlacing and pass extraction</a>
23 */
24 public enum InterlaceMethod {
25
26 NONE(false), ADAM7(true);
27
28 private final boolean progressive;
29
30 InterlaceMethod(final boolean progressive) {
31 this.progressive = progressive;
32 }
33
34 public boolean isProgressive() {
35 return progressive;
36 }
37 }