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.gif; 018 019/** 020 * Describes the disposal of a GIF frame when rendering the animation. Frames that aren't disposed can show through 021 * transparent pixels of coming frames. This allows new layers to contain just the part of the animation that changes. 022 */ 023public enum DisposalMethod { 024 025 /** 026 * Typically used for a full-size non-transparent frame that will be replaced by another. 027 */ 028 UNSPECIFIED, 029 030 /** 031 * The next frame should be rendered on top of this frame. 032 */ 033 DO_NOT_DISPOSE, 034 035 /** 036 * Dispose the frame and restore the background. 037 */ 038 RESTORE_TO_BACKGROUND, 039 040 /** 041 * Dispose the frame and restore the previous undisposed frame. 042 */ 043 RESTORE_TO_PREVIOUS, 044 045 /** 046 * Unused method 1. 047 */ 048 TO_BE_DEFINED_1, 049 050 /** 051 * Unused method 2. 052 */ 053 TO_BE_DEFINED_2, 054 055 /** 056 * Unused method 3. 057 */ 058 TO_BE_DEFINED_3, 059 060 /** 061 * Unused method 4. 062 */ 063 TO_BE_DEFINED_4 064}