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- /* ====================================================================
- 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);
- }
- }
- }
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