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Apache POI - Java API To Access Microsoft Format Files
/* ====================================================================
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.usermodel;
import java.awt.Graphics2D;
import java.util.ArrayList;
import java.util.List;
import org.apache.poi.ddf.EscherContainerRecord;
import org.apache.poi.ddf.EscherDgRecord;
import org.apache.poi.ddf.EscherDggRecord;
import org.apache.poi.ddf.EscherSpRecord;
import org.apache.poi.hslf.exceptions.HSLFException;
import org.apache.poi.hslf.model.HeadersFooters;
import org.apache.poi.hslf.record.CString;
import org.apache.poi.hslf.record.ColorSchemeAtom;
import org.apache.poi.hslf.record.Comment2000;
import org.apache.poi.hslf.record.EscherTextboxWrapper;
import org.apache.poi.hslf.record.HeadersFootersContainer;
import org.apache.poi.hslf.record.Record;
import org.apache.poi.hslf.record.RecordContainer;
import org.apache.poi.hslf.record.RecordTypes;
import org.apache.poi.hslf.record.SSSlideInfoAtom;
import org.apache.poi.hslf.record.SlideAtom;
import org.apache.poi.hslf.record.SlideAtomLayout.SlideLayoutType;
import org.apache.poi.hslf.record.SlideListWithText.SlideAtomsSet;
import org.apache.poi.hslf.record.StyleTextProp9Atom;
import org.apache.poi.hslf.record.TextHeaderAtom;
import org.apache.poi.sl.draw.DrawFactory;
import org.apache.poi.sl.draw.Drawable;
import org.apache.poi.sl.usermodel.Notes;
import org.apache.poi.sl.usermodel.Placeholder;
import org.apache.poi.sl.usermodel.ShapeType;
import org.apache.poi.sl.usermodel.Slide;
/**
* This class represents a slide in a PowerPoint Document. It allows
* access to the text within, and the layout. For now, it only does
* the text side of things though
*
* @author Nick Burch
* @author Yegor Kozlov
*/
public final class HSLFSlide extends HSLFSheet implements Slide {
private int _slideNo;
private SlideAtomsSet _atomSet;
private final List> _paragraphs = new ArrayList<>();
private HSLFNotes _notes; // usermodel needs to set this
/**
* Constructs a Slide from the Slide record, and the SlideAtomsSet
* containing the text.
* Initializes TextRuns, to provide easier access to the text
*
* @param slide the Slide record we're based on
* @param notes the Notes sheet attached to us
* @param atomSet the SlideAtomsSet to get the text from
*/
public HSLFSlide(org.apache.poi.hslf.record.Slide slide, HSLFNotes notes, SlideAtomsSet atomSet, int slideIdentifier, int slideNumber) {
super(slide, slideIdentifier);
_notes = notes;
_atomSet = atomSet;
_slideNo = slideNumber;
// For the text coming in from the SlideAtomsSet:
// Build up TextRuns from pairs of TextHeaderAtom and
// one of TextBytesAtom or TextCharsAtom
if (_atomSet != null && _atomSet.getSlideRecords().length > 0) {
// Grab text from SlideListWithTexts entries
_paragraphs.addAll(HSLFTextParagraph.findTextParagraphs(_atomSet.getSlideRecords()));
if (_paragraphs.isEmpty()) {
throw new HSLFException("No text records found for slide");
}
}
// Grab text from slide's PPDrawing
for (List l : HSLFTextParagraph.findTextParagraphs(getPPDrawing(), this)) {
if (!_paragraphs.contains(l)) {
_paragraphs.add(l);
}
}
}
/**
* Create a new Slide instance
* @param sheetNumber The internal number of the sheet, as used by PersistPtrHolder
* @param slideNumber The user facing number of the sheet
*/
public HSLFSlide(int sheetNumber, int sheetRefId, int slideNumber){
super(new org.apache.poi.hslf.record.Slide(), sheetNumber);
_slideNo = slideNumber;
getSheetContainer().setSheetId(sheetRefId);
}
/**
* Returns the Notes Sheet for this slide, or null if there isn't one
*/
@Override
public HSLFNotes getNotes() {
return _notes;
}
/**
* Sets the Notes that are associated with this. Updates the
* references in the records to point to the new ID
*/
@Override
public void setNotes(Notes notes) {
if (notes != null && !(notes instanceof HSLFNotes)) {
throw new IllegalArgumentException("notes needs to be of type HSLFNotes");
}
_notes = (HSLFNotes)notes;
// Update the Slide Atom's ID of where to point to
SlideAtom sa = getSlideRecord().getSlideAtom();
if(_notes == null) {
// Set to 0
sa.setNotesID(0);
} else {
// Set to the value from the notes' sheet id
sa.setNotesID(_notes._getSheetNumber());
}
}
/**
* Changes the Slide's (external facing) page number.
* @see org.apache.poi.hslf.usermodel.HSLFSlideShow#reorderSlide(int, int)
*/
public void setSlideNumber(int newSlideNumber) {
_slideNo = newSlideNumber;
}
/**
* Called by SlideShow ater a new slide is created.
*
* For Slide we need to do the following:
*
set id of the drawing group.
* set shapeId for the container descriptor and background
*
*/
@Override
public void onCreate(){
//initialize drawing group id
EscherDggRecord dgg = getSlideShow().getDocumentRecord().getPPDrawingGroup().getEscherDggRecord();
EscherContainerRecord dgContainer = getSheetContainer().getPPDrawing().getDgContainer();
EscherDgRecord dg = HSLFShape.getEscherChild(dgContainer, EscherDgRecord.RECORD_ID);
int dgId = dgg.getMaxDrawingGroupId() + 1;
dg.setOptions((short)(dgId << 4));
dgg.setDrawingsSaved(dgg.getDrawingsSaved() + 1);
for (EscherContainerRecord c : dgContainer.getChildContainers()) {
EscherSpRecord spr = null;
switch(c.getRecordId()){
case EscherContainerRecord.SPGR_CONTAINER:
EscherContainerRecord dc = (EscherContainerRecord)c.getChild(0);
spr = dc.getChildById(EscherSpRecord.RECORD_ID);
break;
case EscherContainerRecord.SP_CONTAINER:
spr = c.getChildById(EscherSpRecord.RECORD_ID);
break;
default:
break;
}
if(spr != null) {
spr.setShapeId(allocateShapeId());
}
}
//PPT doen't increment the number of saved shapes for group descriptor and background
dg.setNumShapes(1);
}
/**
* Create a TextBox object that represents the slide's title.
*
* @return TextBox object that represents the slide's title.
*/
public HSLFTextBox addTitle() {
HSLFPlaceholder pl = new HSLFPlaceholder();
pl.setShapeType(ShapeType.RECT);
pl.setPlaceholder(Placeholder.TITLE);
pl.setRunType(TextHeaderAtom.TITLE_TYPE);
pl.setText("Click to edit title");
pl.setAnchor(new java.awt.Rectangle(54, 48, 612, 90));
addShape(pl);
return pl;
}
// Complex Accesser methods follow
/**
*
* The title is a run of text of type TextHeaderAtom.CENTER_TITLE_TYPE or
* TextHeaderAtom.TITLE_TYPE
*
*
* @see TextHeaderAtom
*/
@Override
public String getTitle(){
for (List tp : getTextParagraphs()) {
if (tp.isEmpty()) {
continue;
}
int type = tp.get(0).getRunType();
switch (type) {
case TextHeaderAtom.CENTER_TITLE_TYPE:
case TextHeaderAtom.TITLE_TYPE:
String str = HSLFTextParagraph.getRawText(tp);
return HSLFTextParagraph.toExternalString(str, type);
}
}
return null;
}
@Override
public String getSlideName() {
final CString name = (CString)getSlideRecord().findFirstOfType(RecordTypes.CString.typeID);
return name != null ? name.getText() : "Slide"+getSlideNumber();
}
/**
* Returns an array of all the TextRuns found
*/
@Override
public List> getTextParagraphs() { return _paragraphs; }
/**
* Returns the (public facing) page number of this slide
*/
@Override
public int getSlideNumber() { return _slideNo; }
/**
* Returns the underlying slide record
*/
public org.apache.poi.hslf.record.Slide getSlideRecord() {
return (org.apache.poi.hslf.record.Slide)getSheetContainer();
}
/**
* @return set of records inside SlideListWithtext container
* which hold text data for this slide (typically for placeholders).
*/
protected SlideAtomsSet getSlideAtomsSet() { return _atomSet; }
/**
* Returns master sheet associated with this slide.
* It can be either SlideMaster or TitleMaster objects.
*
* @return the master sheet associated with this slide.
*/
@Override
public HSLFMasterSheet getMasterSheet(){
int masterId = getSlideRecord().getSlideAtom().getMasterID();
for (HSLFSlideMaster sm : getSlideShow().getSlideMasters()) {
if (masterId == sm._getSheetNumber()) {
return sm;
}
}
for (HSLFTitleMaster tm : getSlideShow().getTitleMasters()) {
if (masterId == tm._getSheetNumber()) {
return tm;
}
}
return null;
}
/**
* Change Master of this slide.
*/
public void setMasterSheet(HSLFMasterSheet master){
SlideAtom sa = getSlideRecord().getSlideAtom();
int sheetNo = master._getSheetNumber();
sa.setMasterID(sheetNo);
}
/**
* Sets whether this slide follows master background
*
* @param flag true if the slide follows master,
* false otherwise
*/
@Override
public void setFollowMasterBackground(boolean flag){
SlideAtom sa = getSlideRecord().getSlideAtom();
sa.setFollowMasterBackground(flag);
}
/**
* Whether this slide follows master sheet background
*
* @return true if the slide follows master background,
* false otherwise
*/
@Override
public boolean getFollowMasterBackground(){
SlideAtom sa = getSlideRecord().getSlideAtom();
return sa.getFollowMasterBackground();
}
/**
* Sets whether this slide draws master sheet objects
*
* @param flag true if the slide draws master sheet objects,
* false otherwise
*/
@Override
public void setFollowMasterObjects(boolean flag){
SlideAtom sa = getSlideRecord().getSlideAtom();
sa.setFollowMasterObjects(flag);
}
/**
* Whether this slide follows master color scheme
*
* @return true if the slide follows master color scheme,
* false otherwise
*/
public boolean getFollowMasterScheme(){
SlideAtom sa = getSlideRecord().getSlideAtom();
return sa.getFollowMasterScheme();
}
/**
* Sets whether this slide draws master color scheme
*
* @param flag true if the slide draws master color scheme,
* false otherwise
*/
public void setFollowMasterScheme(boolean flag){
SlideAtom sa = getSlideRecord().getSlideAtom();
sa.setFollowMasterScheme(flag);
}
/**
* Whether this slide draws master sheet objects
*
* @return true if the slide draws master sheet objects,
* false otherwise
*/
@Override
public boolean getFollowMasterObjects(){
SlideAtom sa = getSlideRecord().getSlideAtom();
return sa.getFollowMasterObjects();
}
/**
* Background for this slide.
*/
@Override
public HSLFBackground getBackground() {
if (getFollowMasterBackground()) {
final HSLFMasterSheet ms = getMasterSheet();
return (ms == null) ? null : ms.getBackground();
}
return super.getBackground();
}
/**
* Color scheme for this slide.
*/
@Override
public ColorSchemeAtom getColorScheme() {
if (getFollowMasterScheme()) {
final HSLFMasterSheet ms = getMasterSheet();
return (ms == null) ? null : ms.getColorScheme();
}
return super.getColorScheme();
}
private static RecordContainer selectContainer(final RecordContainer root, final int index, final RecordTypes... path) {
if (root == null || index >= path.length) {
return root;
}
final RecordContainer newRoot = (RecordContainer) root.findFirstOfType(path[index].typeID);
return selectContainer(newRoot, index+1, path);
}
/**
* Get the comment(s) for this slide.
* Note - for now, only works on PPT 2000 and
* PPT 2003 files. Doesn't work for PPT 97
* ones, as they do their comments oddly.
*/
public List getComments() {
final List comments = new ArrayList<>();
// If there are any, they're in
// ProgTags -> ProgBinaryTag -> BinaryTagData
final RecordContainer binaryTags =
selectContainer(getSheetContainer(), 0,
RecordTypes.ProgTags, RecordTypes.ProgBinaryTag, RecordTypes.BinaryTagData);
if (binaryTags != null) {
for (final Record record : binaryTags.getChildRecords()) {
if (record instanceof Comment2000) {
comments.add(new HSLFComment((Comment2000)record));
}
}
}
return comments;
}
/**
* Header / Footer settings for this slide.
*
* @return Header / Footer settings for this slide
*/
public HeadersFooters getHeadersFooters(){
return new HeadersFooters(this, HeadersFootersContainer.SlideHeadersFootersContainer);
}
@Override
protected void onAddTextShape(HSLFTextShape shape) {
List newParas = shape.getTextParagraphs();
_paragraphs.add(newParas);
}
/** This will return an atom per TextBox, so if the page has two text boxes the method should return two atoms. */
public StyleTextProp9Atom[] getNumberedListInfo() {
return this.getPPDrawing().getNumberedListInfo();
}
public EscherTextboxWrapper[] getTextboxWrappers() {
return this.getPPDrawing().getTextboxWrappers();
}
@Override
public void setHidden(boolean hidden) {
org.apache.poi.hslf.record.Slide cont = getSlideRecord();
SSSlideInfoAtom slideInfo =
(SSSlideInfoAtom)cont.findFirstOfType(RecordTypes.SSSlideInfoAtom.typeID);
if (slideInfo == null) {
slideInfo = new SSSlideInfoAtom();
cont.addChildAfter(slideInfo, cont.findFirstOfType(RecordTypes.SlideAtom.typeID));
}
slideInfo.setEffectTransitionFlagByBit(SSSlideInfoAtom.HIDDEN_BIT, hidden);
}
@Override
public boolean isHidden() {
SSSlideInfoAtom slideInfo =
(SSSlideInfoAtom)getSlideRecord().findFirstOfType(RecordTypes.SSSlideInfoAtom.typeID);
return (slideInfo != null) && slideInfo.getEffectTransitionFlagByBit(SSSlideInfoAtom.HIDDEN_BIT);
}
@Override
public void draw(Graphics2D graphics) {
DrawFactory drawFact = DrawFactory.getInstance(graphics);
Drawable draw = drawFact.getDrawable(this);
draw.draw(graphics);
}
@Override
public boolean getFollowMasterColourScheme() {
return false;
}
@Override
public void setFollowMasterColourScheme(boolean follow) {
}
@Override
public boolean getFollowMasterGraphics() {
return getFollowMasterObjects();
}
@Override
public boolean getDisplayPlaceholder(final Placeholder placeholder) {
final HeadersFooters hf = getHeadersFooters();
final SlideLayoutType slt = getSlideRecord().getSlideAtom().getSSlideLayoutAtom().getGeometryType();
final boolean isTitle =
(slt == SlideLayoutType.TITLE_SLIDE || slt == SlideLayoutType.TITLE_ONLY || slt == SlideLayoutType.MASTER_TITLE);
switch (placeholder) {
case DATETIME:
return hf.isDateTimeVisible() && !isTitle;
case SLIDE_NUMBER:
return hf.isSlideNumberVisible() && !isTitle;
case HEADER:
return hf.isHeaderVisible() && !isTitle;
case FOOTER:
return hf.isFooterVisible() && !isTitle;
default:
return false;
}
}
@Override
public HSLFMasterSheet getSlideLayout(){
// TODO: find out how we can find the mastersheet base on the slide layout type, i.e.
// getSlideRecord().getSlideAtom().getSSlideLayoutAtom().getGeometryType()
return getMasterSheet();
}
}