| /* ==================================================================== |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| ==================================================================== */ |
| |
| package org.apache.poi.hslf.blip; |
| |
| import java.awt.Dimension; |
| import java.awt.image.BufferedImage; |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| |
| import javax.imageio.ImageIO; |
| |
| import org.apache.poi.ddf.EscherBSERecord; |
| import org.apache.poi.ddf.EscherContainerRecord; |
| import org.apache.poi.hslf.usermodel.HSLFPictureData; |
| import org.apache.poi.hslf.usermodel.HSLFSlideShow; |
| import org.apache.poi.util.IOUtils; |
| import org.apache.poi.util.Internal; |
| import org.apache.poi.util.Removal; |
| import org.apache.poi.util.Units; |
| |
| /** |
| * Represents a bitmap picture data: JPEG or PNG. |
| * The data is not compressed and the exact file content is written in the stream. |
| */ |
| public abstract class Bitmap extends HSLFPictureData { |
| |
| /** |
| * @deprecated Use {@link HSLFSlideShow#addPicture(byte[], PictureType)} or one of it's overloads to create new |
| * {@link Bitmap}. This API led to detached {@link Bitmap} instances (See Bugzilla |
| * 46122) and prevented adding additional functionality. |
| */ |
| @Deprecated |
| @Removal(version = "5.3") |
| public Bitmap() { |
| this(new EscherContainerRecord(), new EscherBSERecord()); |
| } |
| |
| /** |
| * Creates a new instance. |
| * |
| * @param recordContainer Record tracking all pictures. Should be attached to the slideshow that this picture is |
| * linked to. |
| * @param bse Record referencing this picture. Should be attached to the slideshow that this picture is linked to. |
| */ |
| @Internal |
| protected Bitmap(EscherContainerRecord recordContainer, EscherBSERecord bse) { |
| super(recordContainer, bse); |
| } |
| |
| @Override |
| public byte[] getData(){ |
| byte[] rawdata = getRawData(); |
| int prefixLen = 16*getUIDInstanceCount()+1; |
| return IOUtils.safelyClone(rawdata, prefixLen, rawdata.length-prefixLen, rawdata.length); |
| } |
| |
| @Override |
| protected byte[] formatImageForSlideshow(byte[] data) { |
| byte[] checksum = getChecksum(data); |
| byte[] rawData = new byte[checksum.length * getUIDInstanceCount() + 1 + data.length]; |
| int offset = 0; |
| |
| System.arraycopy(checksum, 0, rawData, offset, checksum.length); |
| offset += checksum.length; |
| |
| if (getUIDInstanceCount() == 2) { |
| System.arraycopy(checksum, 0, rawData, offset, checksum.length); |
| offset += checksum.length; |
| } |
| |
| offset++; |
| System.arraycopy(data, 0, rawData, offset, data.length); |
| return rawData; |
| } |
| |
| @Override |
| public Dimension getImageDimension() { |
| try { |
| BufferedImage bi = ImageIO.read(new ByteArrayInputStream(getData())); |
| return new Dimension( |
| (int)Units.pixelToPoints(bi.getWidth()), |
| (int)Units.pixelToPoints(bi.getHeight()) |
| ); |
| } catch (IOException e) { |
| return new Dimension(200,200); |
| } |
| } |
| } |