/*
* 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.model;
import org.apache.poi.ddf.*;
import org.apache.poi.hslf.usermodel.PictureData;
import org.apache.poi.hslf.usermodel.SlideShow;
import org.apache.poi.hslf.record.Document;
import org.apache.poi.hslf.blip.Bitmap;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.awt.*;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.util.List;
import java.util.Arrays;
/**
* Represents a picture in a PowerPoint document.
*
* @author Yegor Kozlov
*/
public class Picture extends SimpleShape {
/**
* Windows Enhanced Metafile (EMF)
*/
public static final int EMF = 2;
/**
* Windows Metafile (WMF)
*/
public static final int WMF = 3;
/**
* Macintosh PICT
*/
public static final int PICT = 4;
/**
* JPEG
*/
public static final int JPEG = 5;
/**
* PNG
*/
public static final int PNG = 6;
/**
* Windows DIB (BMP)
*/
public static final byte DIB = 7;
/**
* Create a new <code>Picture</code>
*
* @param idx the index of the picture
*/
public Picture(int idx){
super(null, null);
_escherContainer = createSpContainer(idx);
}
/**
* Create a <code>Picture</code> object
*
* @param escherRecord the <code>EscherSpContainer</code> record which holds information about
* this picture in the <code>Slide</code>
* @param parent the parent shape of this picture
*/
protected Picture(EscherContainerRecord escherRecord, Shape parent){
super(escherRecord, parent);
}
/**
* Returns index associated with this picture.
* Index starts with 1 and points to a EscherBSE record which
* holds information about this picture.
*
* @return the index to this picture (1 based).
*/
public int getPictureIndex(){
EscherOptRecord opt = (EscherOptRecord)getEscherChild(_escherContainer, EscherOptRecord.RECORD_ID);
EscherSimpleProperty prop = (EscherSimpleProperty)getEscherProperty(opt, EscherProperties.BLIP__BLIPTODISPLAY + 0x4000);
return prop.getPropertyValue();
}
/**
* Create a new Picture and populate the inital structure of the <code>EscherSp</code> record which holds information about this picture.
* @param idx the index of the picture which referes to <code>EscherBSE</code> container.
* @return the create Picture object
*/
protected EscherContainerRecord createSpContainer(int idx) {
EscherContainerRecord spContainer = super.createSpContainer(false);
spContainer.setOptions((short)15);
EscherSpRecord spRecord = spContainer.getChildById(EscherSpRecord.RECORD_ID);
spRecord.setOptions((short)((ShapeTypes.PictureFrame << 4) | 0x2));
//set default properties for a picture
EscherOptRecord opt = (EscherOptRecord)getEscherChild(spContainer, EscherOptRecord.RECORD_ID);
setEscherProperty(opt, EscherProperties.PROTECTION__LOCKAGAINSTGROUPING, 8388736);
//another weird feature of powerpoint: for picture id we must add 0x4000.
setEscherProperty(opt, (short)(EscherProperties.BLIP__BLIPTODISPLAY + 0x4000), idx);
return spContainer;
}
/**
* Resize this picture to the default size.
* For PNG and JPEG resizes the image to 100%,
* for other types sets the default size of 200x200 pixels.
*/
public void setDefaultSize(){
PictureData pict = getPictureData();
if (pict instanceof Bitmap){
BufferedImage img = null;
try {
img = ImageIO.read(new ByteArrayInputStream(pict.getData()));
}
catch (IOException e){}
catch (NegativeArraySizeException ne) {}
if(img != null) {
// Valid image, set anchor from it
setAnchor(new java.awt.Rectangle(0, 0, img.getWidth()*POINT_DPI/PIXEL_DPI, img.getHeight()*POINT_DPI/PIXEL_DPI));
} else {
// Invalid image, go with the default metafile size
setAnchor(new java.awt.Rectangle(0, 0, 200, 200));
}
} else {
//default size of a metafile picture is 200x200
setAnchor(new java.awt.Rectangle(50, 50, 200, 200));
}
}
/**
* Returns the picture data for this picture.
*
* @return the picture data for this picture.
*/
public PictureData getPictureData(){
SlideShow ppt = getSheet().getSlideShow();
PictureData[] pict = ppt.getPictureData();
Document doc = ppt.getDocumentRecord();
EscherContainerRecord dggContainer = doc.getPPDrawingGroup().getDggContainer();
EscherContainerRecord bstore = (EscherContainerRecord)Shape.getEscherChild(dggContainer, EscherContainerRecord.BSTORE_CONTAINER);
List lst = bstore.getChildRecords();
int idx = getPictureIndex()-1;
EscherBSERecord bse = (EscherBSERecord)lst.get(idx);
for ( int i = 0; i < pict.length; i++ ) {
if (pict[i].getOffset() == bse.getOffset()){
return pict[i];
}
}
System.err.println("Warning - no picture found for our BSE offset " + bse.getOffset());
return null;
}
/**
* By default set the orininal image size
*/
protected void afterInsert(Sheet sh){
java.awt.Rectangle anchor = getAnchor();
if (anchor.equals(new java.awt.Rectangle())){
setDefaultSize();
}
}
}