    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
    019import java.util.ArrayList;
    020import java.util.Collections;
    021import java.util.List;
    022
    023import org.apache.commons.imaging.common.ImageMetadata;
    024
    025public class GifImageMetadata implements ImageMetadata {
    026
    027    private static final String NEWLINE = System.lineSeparator();
    028    private final int width;
    029    private final int height;
    030    private final List<GifImageMetadataItem> items;
    031
    032    GifImageMetadata(final int width, final int height, final List<GifImageMetadataItem> items) {
    033        this.width = width;
    034        this.height = height;
    035        this.items = Collections.unmodifiableList(new ArrayList<>(items));
    036    }
    037
    038    public int getHeight() {
    039        return height;
    040    }
    041
    042    @Override
    043    public List<GifImageMetadataItem> getItems() {
    044        return Collections.unmodifiableList(items);
    045    }
    046
    047    public int getWidth() {
    048        return width;
    049    }
    050
    051    @Override
    052    public String toString(String prefix) {
    053        prefix = prefix == null ? "" : prefix;
    054        final StringBuilder result = new StringBuilder();
    055        result.append(String.format("%sGIF metadata:", prefix));
    056        result.append(String.format("%sWidth: %d%s", prefix, width, NEWLINE));
    057        result.append(String.format("%sHeight: %d%s", prefix, height, NEWLINE));
    058        result.append(NEWLINE);
    059        result.append(String.format("%sImages:", prefix));
    060        for (final GifImageMetadataItem item : items) {
    061            result.append(NEWLINE);
    062            result.append(item.toString(prefix));
    063        }
    064        return result.toString();
    065    }
    066}