Java tutorial
/* ==================================================================== 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.xslf.usermodel; import static org.apache.poi.ooxml.POIXMLTypeLoader.DEFAULT_XML_OPTIONS; import java.awt.Graphics2D; import java.io.IOException; import java.util.ArrayList; import java.util.List; import org.apache.poi.ooxml.POIXMLDocumentPart; import org.apache.poi.openxml4j.opc.PackagePart; 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.Slide; import org.apache.poi.util.Beta; import org.apache.poi.ooxml.util.DocumentHelper; import org.apache.poi.util.NotImplemented; import org.apache.xmlbeans.XmlException; import org.openxmlformats.schemas.drawingml.x2006.main.CTGroupShapeProperties; import org.openxmlformats.schemas.drawingml.x2006.main.CTGroupTransform2D; import org.openxmlformats.schemas.drawingml.x2006.main.CTNonVisualDrawingProps; import org.openxmlformats.schemas.drawingml.x2006.main.CTPoint2D; import org.openxmlformats.schemas.drawingml.x2006.main.CTPositiveSize2D; import org.openxmlformats.schemas.presentationml.x2006.main.CTBackground; import org.openxmlformats.schemas.presentationml.x2006.main.CTComment; import org.openxmlformats.schemas.presentationml.x2006.main.CTCommonSlideData; import org.openxmlformats.schemas.presentationml.x2006.main.CTGroupShape; import org.openxmlformats.schemas.presentationml.x2006.main.CTGroupShapeNonVisual; import org.openxmlformats.schemas.presentationml.x2006.main.CTSlide; import org.openxmlformats.schemas.presentationml.x2006.main.SldDocument; import org.w3c.dom.Document; import org.xml.sax.SAXException; @Beta public final class XSLFSlide extends XSLFSheet implements Slide<XSLFShape, XSLFTextParagraph> { private final CTSlide _slide; private XSLFSlideLayout _layout; private XSLFComments _comments; private XSLFCommentAuthors _commentAuthors; private XSLFNotes _notes; /** * Create a new slide */ XSLFSlide() { super(); _slide = prototype(); } /** * Construct a SpreadsheetML slide from a package part * * @param part the package part holding the slide data, * the content type must be <code>application/vnd.openxmlformats-officedocument.slide+xml</code> * * @since POI 3.14-Beta1 */ XSLFSlide(PackagePart part) throws IOException, XmlException { super(part); Document _doc; try { _doc = DocumentHelper.readDocument(getPackagePart().getInputStream()); } catch (SAXException e) { throw new IOException(e); } SldDocument doc = SldDocument.Factory.parse(_doc, DEFAULT_XML_OPTIONS); _slide = doc.getSld(); } private static CTSlide prototype() { CTSlide ctSlide = CTSlide.Factory.newInstance(); CTCommonSlideData cSld = ctSlide.addNewCSld(); CTGroupShape spTree = cSld.addNewSpTree(); CTGroupShapeNonVisual nvGrpSpPr = spTree.addNewNvGrpSpPr(); CTNonVisualDrawingProps cnvPr = nvGrpSpPr.addNewCNvPr(); cnvPr.setId(1); cnvPr.setName(""); nvGrpSpPr.addNewCNvGrpSpPr(); nvGrpSpPr.addNewNvPr(); CTGroupShapeProperties grpSpr = spTree.addNewGrpSpPr(); CTGroupTransform2D xfrm = grpSpr.addNewXfrm(); CTPoint2D off = xfrm.addNewOff(); off.setX(0); off.setY(0); CTPositiveSize2D ext = xfrm.addNewExt(); ext.setCx(0); ext.setCy(0); CTPoint2D choff = xfrm.addNewChOff(); choff.setX(0); choff.setY(0); CTPositiveSize2D chExt = xfrm.addNewChExt(); chExt.setCx(0); chExt.setCy(0); ctSlide.addNewClrMapOvr().addNewMasterClrMapping(); return ctSlide; } @Override public CTSlide getXmlObject() { return _slide; } @Override protected String getRootElementName() { return "sld"; } @SuppressWarnings({ "WeakerAccess", "ProtectedMemberInFinalClass" }) protected void removeChartRelation(XSLFChart chart) { removeRelation(chart); } @SuppressWarnings({ "WeakerAccess", "ProtectedMemberInFinalClass" }) protected void removeLayoutRelation(XSLFSlideLayout layout) { removeRelation(layout, false); } @Override public XSLFSlideLayout getMasterSheet() { return getSlideLayout(); } @Override public XSLFSlideLayout getSlideLayout() { if (_layout == null) { for (POIXMLDocumentPart p : getRelations()) { if (p instanceof XSLFSlideLayout) { _layout = (XSLFSlideLayout) p; } } } if (_layout == null) { throw new IllegalArgumentException("SlideLayout was not found for " + this); } return _layout; } public XSLFSlideMaster getSlideMaster() { return getSlideLayout().getSlideMaster(); } /** * @return the comments part or {@code null} if there weren't any comments * @since POI 4.0.0 */ @SuppressWarnings("WeakerAccess") public XSLFComments getCommentsPart() { if (_comments == null) { for (POIXMLDocumentPart p : getRelations()) { if (p instanceof XSLFComments) { _comments = (XSLFComments) p; break; } } } return _comments; } /** * @return the comment authors part or {@code null} if there weren't any comments * @since POI 4.0.0 */ @SuppressWarnings("WeakerAccess") public XSLFCommentAuthors getCommentAuthorsPart() { if (_commentAuthors == null) { // first scan the slide relations for (POIXMLDocumentPart p : getRelations()) { if (p instanceof XSLFCommentAuthors) { _commentAuthors = (XSLFCommentAuthors) p; return _commentAuthors; } } // then scan the presentation relations for (POIXMLDocumentPart p : getSlideShow().getRelations()) { if (p instanceof XSLFCommentAuthors) { _commentAuthors = (XSLFCommentAuthors) p; return _commentAuthors; } } } return null; } @Override public List<XSLFComment> getComments() { final List<XSLFComment> comments = new ArrayList<>(); final XSLFComments xComments = getCommentsPart(); final XSLFCommentAuthors xAuthors = getCommentAuthorsPart(); if (xComments != null) { //noinspection deprecation for (final CTComment xc : xComments.getCTCommentsList().getCmArray()) { comments.add(new XSLFComment(xc, xAuthors)); } } return comments; } @Override public XSLFNotes getNotes() { if (_notes == null) { for (POIXMLDocumentPart p : getRelations()) { if (p instanceof XSLFNotes) { _notes = (XSLFNotes) p; } } } if (_notes == null) { // This slide lacks notes // Not all have them, sorry... return null; } return _notes; } @Override public String getTitle() { XSLFTextShape txt = getTextShapeByType(Placeholder.TITLE); return txt == null ? null : txt.getText(); } @Override public XSLFTheme getTheme() { return getSlideLayout().getSlideMaster().getTheme(); } /** * * @return the information about background appearance of this slide */ @Override public XSLFBackground getBackground() { CTBackground bg = _slide.getCSld().getBg(); if (bg != null) { return new XSLFBackground(bg, this); } else { return getMasterSheet().getBackground(); } } @Override public boolean getFollowMasterGraphics() { return _slide.getShowMasterSp(); } /** * * @param value whether shapes on the master slide should be shown or not. */ @SuppressWarnings("WeakerAccess") public void setFollowMasterGraphics(boolean value) { _slide.setShowMasterSp(value); } @Override public boolean getFollowMasterObjects() { return getFollowMasterGraphics(); } @Override public void setFollowMasterObjects(boolean follow) { setFollowMasterGraphics(follow); } @Override public XSLFSlide importContent(XSLFSheet src) { super.importContent(src); if (!(src instanceof XSLFSlide)) { return this; } // only copy direct backgrounds - not backgrounds of master sheet CTBackground bgOther = ((XSLFSlide) src)._slide.getCSld().getBg(); if (bgOther == null) { return this; } CTBackground bgThis = _slide.getCSld().getBg(); // remove existing background if (bgThis != null) { if (bgThis.isSetBgPr() && bgThis.getBgPr().isSetBlipFill()) { String oldId = bgThis.getBgPr().getBlipFill().getBlip().getEmbed(); removeRelation(oldId); } _slide.getCSld().unsetBg(); } bgThis = (CTBackground) _slide.getCSld().addNewBg().set(bgOther); if (bgOther.isSetBgPr() && bgOther.getBgPr().isSetBlipFill()) { String idOther = bgOther.getBgPr().getBlipFill().getBlip().getEmbed(); String idThis = importBlip(idOther, src); bgThis.getBgPr().getBlipFill().getBlip().setEmbed(idThis); } return this; } @Override public boolean getFollowMasterBackground() { return false; } @Override @NotImplemented public void setFollowMasterBackground(boolean follow) { // not implemented ... also not in the specs throw new UnsupportedOperationException(); } @Override public boolean getFollowMasterColourScheme() { return false; } @Override @NotImplemented public void setFollowMasterColourScheme(boolean follow) { // not implemented ... only for OLE objects in the specs throw new UnsupportedOperationException(); } @Override @NotImplemented public void setNotes(Notes<XSLFShape, XSLFTextParagraph> notes) { assert (notes instanceof XSLFNotes); // TODO Auto-generated method stub } @Override public int getSlideNumber() { int idx = getSlideShow().getSlides().indexOf(this); return (idx == -1) ? idx : idx + 1; } /** * Render this sheet into the supplied graphics object * * @param graphics the graphics context to draw to */ @Override public void draw(Graphics2D graphics) { DrawFactory drawFact = DrawFactory.getInstance(graphics); Drawable draw = drawFact.getDrawable(this); draw.draw(graphics); } @Override public boolean getDisplayPlaceholder(Placeholder placeholder) { return false; } @Override public void setHidden(boolean hidden) { CTSlide sld = getXmlObject(); if (hidden) { sld.setShow(false); } else { // if the attribute does not exist, the slide is shown if (sld.isSetShow()) { sld.unsetShow(); } } } @Override public boolean isHidden() { CTSlide sld = getXmlObject(); return sld.isSetShow() && !sld.getShow(); } @Override public String getSlideName() { final CTCommonSlideData cSld = getXmlObject().getCSld(); return cSld.isSetName() ? cSld.getName() : "Slide" + getSlideNumber(); } }