| /* ==================================================================== |
| 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.ByteArrayOutputStream; |
| import java.io.IOException; |
| |
| import javax.imageio.ImageIO; |
| |
| import org.apache.poi.hslf.usermodel.HSLFPictureData; |
| 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 { |
| |
| @Override |
| public byte[] getData(){ |
| byte[] rawdata = getRawData(); |
| int prefixLen = 16*getUIDInstanceCount()+1; |
| byte[] imgdata = new byte[rawdata.length-prefixLen]; |
| System.arraycopy(rawdata, prefixLen, imgdata, 0, imgdata.length); |
| return imgdata; |
| } |
| |
| @Override |
| public void setData(byte[] data) throws IOException { |
| byte[] checksum = getChecksum(data); |
| ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| out.write(checksum); |
| if (getUIDInstanceCount() == 2) { |
| out.write(checksum); |
| } |
| out.write(0); |
| out.write(data); |
| |
| setRawData(out.toByteArray()); |
| } |
| |
| @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); |
| } |
| } |
| } |