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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.xssf.usermodel;
-
- import java.io.IOException;
- import java.io.InputStream;
-
- import org.apache.poi.ooxml.POIXMLDocumentPart;
- import org.apache.poi.ooxml.POIXMLException;
- import org.apache.poi.ooxml.POIXMLRelation;
- import org.apache.poi.openxml4j.opc.PackagePart;
- import org.apache.poi.ss.usermodel.PictureData;
- import org.apache.poi.ss.usermodel.Workbook;
- import org.apache.poi.util.IOUtils;
-
- /**
- * Raw picture data, normally attached to a SpreadsheetML Drawing.
- * As a rule, pictures are stored in the /xl/media/ part of a SpreadsheetML package.
- */
- public class XSSFPictureData extends POIXMLDocumentPart implements PictureData {
-
- private static final int DEFAULT_MAX_IMAGE_SIZE = 100_000_000;
- private static int MAX_IMAGE_SIZE = DEFAULT_MAX_IMAGE_SIZE;
-
- /**
- * @param length the max image size allowed for XSSF pictures
- */
- public static void setMaxImageSize(int length) {
- MAX_IMAGE_SIZE = length;
- }
-
- /**
- * @return the max image size allowed for XSSF pictures
- */
- public static int getMaxImageSize() {
- return MAX_IMAGE_SIZE;
- }
-
- /**
- * Relationships for each known picture type
- */
- protected static final POIXMLRelation[] RELATIONS;
- static {
- RELATIONS = new POIXMLRelation[13];
- RELATIONS[Workbook.PICTURE_TYPE_EMF] = XSSFRelation.IMAGE_EMF;
- RELATIONS[Workbook.PICTURE_TYPE_WMF] = XSSFRelation.IMAGE_WMF;
- RELATIONS[Workbook.PICTURE_TYPE_PICT] = XSSFRelation.IMAGE_PICT;
- RELATIONS[Workbook.PICTURE_TYPE_JPEG] = XSSFRelation.IMAGE_JPEG;
- RELATIONS[Workbook.PICTURE_TYPE_PNG] = XSSFRelation.IMAGE_PNG;
- RELATIONS[Workbook.PICTURE_TYPE_DIB] = XSSFRelation.IMAGE_DIB;
- RELATIONS[XSSFWorkbook.PICTURE_TYPE_GIF] = XSSFRelation.IMAGE_GIF;
- RELATIONS[XSSFWorkbook.PICTURE_TYPE_TIFF] = XSSFRelation.IMAGE_TIFF;
- RELATIONS[XSSFWorkbook.PICTURE_TYPE_EPS] = XSSFRelation.IMAGE_EPS;
- RELATIONS[XSSFWorkbook.PICTURE_TYPE_BMP] = XSSFRelation.IMAGE_BMP;
- RELATIONS[XSSFWorkbook.PICTURE_TYPE_WPG] = XSSFRelation.IMAGE_WPG;
- }
-
- /**
- * Create a new XSSFPictureData node
- *
- * @see org.apache.poi.xssf.usermodel.XSSFWorkbook#addPicture(byte[], int)
- */
- protected XSSFPictureData() {
- super();
- }
-
- /**
- * Construct XSSFPictureData from a package part
- *
- * @param part the package part holding the drawing data,
- *
- * @since POI 3.14-Beta1
- */
- protected XSSFPictureData(PackagePart part) {
- super(part);
- }
-
- /**
- * Gets the picture data as a byte array.
- * <p>
- * Note, that this call might be expensive since all the picture data is copied into a temporary byte array.
- * You can grab the picture data directly from the underlying package part as follows:
- * <br>
- * <code>
- * InputStream is = getPackagePart().getInputStream();
- * </code>
- * </p>
- *
- * @return the picture data.
- */
- public byte[] getData() {
- try (InputStream inputStream = getPackagePart().getInputStream()) {
- return IOUtils.toByteArrayWithMaxLength(inputStream, getMaxImageSize());
- } catch(IOException e) {
- throw new POIXMLException(e);
- }
- }
-
- @Override
- public String suggestFileExtension() {
- return getPackagePart().getPartName().getExtension();
- }
-
- @Override
- public int getPictureType(){
- String contentType = getPackagePart().getContentType();
- for (int i = 0; i < RELATIONS.length; i++) {
- if(RELATIONS[i] == null) continue;
-
- if(RELATIONS[i].getContentType().equals(contentType)){
- return i;
- }
- }
- return 0;
- }
-
- public String getMimeType() {
- return getPackagePart().getContentType();
- }
-
- /**
- * *PictureData objects store the actual content in the part directly without keeping a
- * copy like all others therefore we need to handle them differently.
- */
- @Override
- protected void prepareForCommit() {
- // do not clear the part here
- }
- }
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