org.apache.poi.xslf.usermodel.XSLFDiagram Maven / Gradle / Ivy
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this work for additional information regarding copyright ownership.
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(the "License"); you may not use this file except in compliance with
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http://www.apache.org/licenses/LICENSE-2.0
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distributed under the License is distributed on an "AS IS" BASIS,
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See the License for the specific language governing permissions and
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package org.apache.poi.xslf.usermodel;
import com.microsoft.schemas.office.drawing.x2008.diagram.CTGroupShape;
import com.microsoft.schemas.office.drawing.x2008.diagram.CTShape;
import org.apache.poi.ooxml.POIXMLDocumentPart;
import org.apache.poi.util.Beta;
import org.apache.xmlbeans.XmlObject;
import org.openxmlformats.schemas.drawingml.x2006.diagram.CTRelIds;
import org.openxmlformats.schemas.drawingml.x2006.main.CTGraphicalObjectData;
import org.openxmlformats.schemas.drawingml.x2006.main.CTGroupShapeProperties;
import org.openxmlformats.schemas.drawingml.x2006.main.CTTextParagraph;
import org.openxmlformats.schemas.presentationml.x2006.main.CTApplicationNonVisualDrawingProps;
import org.openxmlformats.schemas.presentationml.x2006.main.CTGraphicalObjectFrame;
import org.openxmlformats.schemas.presentationml.x2006.main.CTGroupShapeNonVisual;
import org.openxmlformats.schemas.presentationml.x2006.main.CTShapeNonVisual;
import javax.xml.namespace.QName;
import java.awt.geom.Rectangle2D;
import java.util.ArrayList;
import java.util.List;
/**
* Representation of a DrawingML Diagram
*
* This class converts the diagram to an {@link XSLFGroupShape} accessible via {@link #getGroupShape()}. The underlying
* {@link XSLFDiagramDrawing} used to create the group shape is accessible via {@link #getDiagramDrawing()}.
*
* In pptx files, these diagrams are generated by creating SmartArt. When a pptx has SmartArt, a directory with the
* following structure is created:
*
*
* ppt/
* diagrams/
* data#.xml
* drawing#.xml^
* colors#.xml
* quickStyle#.xml
* layout#.xml
* rels/
* data#.xml.rels
* drawing#.xml.rels
*
*
* ^The `drawing#.xml` file is not in the OpenXML spec. It was added as an extension by Microsoft, namespace:
* http://schemas.microsoft.com/office/drawing/2008/diagram
*
* The drawing#.xml file contains the rendered output of the diagram. This class reads the underlying drawing#.xml and
* converts it to a {@link XSLFGroupShape}.
*
* The data, drawing, colors, and quickStyle files are in the OpenXML spec. These contain the instructions that define
* how to render the diagram. Rendering diagrams from these files is not trivial, they support for loops, if/elses, etc.
* Integrating such a change into POI would be quite sophisticated and challenging.
*
* @since POI 5.2.3
*/
@Beta
public class XSLFDiagram extends XSLFGraphicFrame {
public static final String DRAWINGML_DIAGRAM_URI = "http://schemas.openxmlformats.org/drawingml/2006/diagram";
private final XSLFDiagramDrawing _drawing;
private final XSLFDiagramGroupShape _groupShape;
/* package protected */ XSLFDiagram(CTGraphicalObjectFrame shape, XSLFSheet sheet) {
super(shape, sheet);
_drawing = readDiagramDrawing(shape, sheet);
_groupShape = initGroupShape();
}
private static boolean hasTextContent(CTShape msShapeCt) {
if (msShapeCt.getTxBody() == null || msShapeCt.getTxXfrm() == null) {
return false;
}
// A shape has text content when there is at least 1 paragraph with 1 paragraph run list
List paragraphs = msShapeCt.getTxBody().getPList();
return paragraphs.stream()
.flatMap(p -> p.getRList().stream())
.anyMatch(run -> run.getT() != null && !run.getT().trim().isEmpty());
}
private static XSLFDiagramDrawing readDiagramDrawing(CTGraphicalObjectFrame shape, XSLFSheet sheet) {
CTGraphicalObjectData graphicData = shape.getGraphic().getGraphicData();
XmlObject[] children = graphicData.selectChildren(new QName(DRAWINGML_DIAGRAM_URI, "relIds"));
if (children.length == 0) {
return null;
}
// CTRelIds doesn't contain a relationship to the drawing#.xml
// But it has the same name as the other data#.xml, layout#.xml, etc.
CTRelIds relIds = (CTRelIds) children[0];
POIXMLDocumentPart dataModelPart = sheet.getRelationById(relIds.getDm());
if (dataModelPart == null) {
return null;
}
String dataPartName = dataModelPart.getPackagePart().getPartName().getName();
String drawingPartName = dataPartName.replace("data", "drawing");
for (POIXMLDocumentPart.RelationPart rp : sheet.getRelationParts()) {
if (drawingPartName.equals(rp.getDocumentPart().getPackagePart().getPartName().getName())) {
if (rp.getDocumentPart() instanceof XSLFDiagramDrawing) {
return rp.getDocumentPart();
}
}
}
return null;
}
/**
* Returns the underlying {@link XSLFDiagramDrawing} used to create this diagram.
*
* NOTE: Modifying this drawing will not update the groupShape returned from {@link #getGroupShape()}.
*/
public XSLFDiagramDrawing getDiagramDrawing() {
return _drawing;
}
/**
* Returns the diagram represented as a grouped shape.
*/
public XSLFDiagramGroupShape getGroupShape() {
return _groupShape;
}
// If the shape has text, two XSLFShapes are created. One shape element and one textbox element.
private List convertShape(CTShape msShapeCt) {
org.openxmlformats.schemas.presentationml.x2006.main.CTShape shapeCt
= org.openxmlformats.schemas.presentationml.x2006.main.CTShape.Factory.newInstance();
// The fields on MS CTShape largely re-use the underlying openxml classes.
// We just copy the fields from the MS CTShape to the openxml CTShape
shapeCt.setStyle(msShapeCt.getStyle());
shapeCt.setSpPr(msShapeCt.getSpPr());
CTShapeNonVisual nonVisualCt = shapeCt.addNewNvSpPr();
nonVisualCt.setCNvPr(msShapeCt.getNvSpPr().getCNvPr());
nonVisualCt.setCNvSpPr(msShapeCt.getNvSpPr().getCNvSpPr());
nonVisualCt.setNvPr(CTApplicationNonVisualDrawingProps.Factory.newInstance());
shapeCt.setNvSpPr(nonVisualCt);
ArrayList shapes = new ArrayList<>();
shapes.add(shapeCt);
if (hasTextContent(msShapeCt)) {
org.openxmlformats.schemas.presentationml.x2006.main.CTShape textShapeCT = convertText(msShapeCt, nonVisualCt);
shapes.add(textShapeCT);
}
return shapes;
}
private org.openxmlformats.schemas.presentationml.x2006.main.CTShape convertText(CTShape msShapeCt, CTShapeNonVisual nonVisualCt) {
org.openxmlformats.schemas.presentationml.x2006.main.CTShape textShapeCT
= org.openxmlformats.schemas.presentationml.x2006.main.CTShape.Factory.newInstance();
// SmartArt shapes define a separate `txXfrm` property for the placement of text inside the shape
// We can't easily (is it even possible?) set a separate xfrm for the text on the openxml CTShape.
// Instead, we create a separate textbox shape with the same xfrm.
org.openxmlformats.schemas.drawingml.x2006.main.CTShapeProperties textShapeProps = textShapeCT.addNewSpPr();
textShapeCT.setTxBody(msShapeCt.getTxBody());
textShapeCT.setStyle(msShapeCt.getStyle());
// Create a copy of the nonVisualCt when setting it for the text box.
// If we shared the one object, a consumer may be surprised that updating the text shape properties
// also updates the parent shape.
textShapeCT.setNvSpPr((CTShapeNonVisual) nonVisualCt.copy());
textShapeCT.getNvSpPr().getCNvSpPr().setTxBox(true);
textShapeProps.setXfrm(msShapeCt.getTxXfrm());
int shapeRotation = msShapeCt.getSpPr().getXfrm().getRot();
int textRotation = msShapeCt.getTxXfrm().getRot();
if (textRotation != 0) {
// SmartArt diagrams (e.g. hexagon) have rotated shapes and the txXfrm can change the rotation for visual
// reasons. We perform that same calculation here again and calculate a new rotation for the text box.
int resolvedRotation = shapeRotation + textRotation;
textShapeProps.getXfrm().setRot(resolvedRotation);
}
return textShapeCT;
}
private XSLFDiagramGroupShape initGroupShape() {
XSLFDiagramDrawing drawing = getDiagramDrawing();
if (drawing == null || drawing.getDrawingDocument() == null) {
return null;
}
CTGroupShape msGroupShapeCt = drawing.getDrawingDocument().getDrawing().getSpTree();
if (msGroupShapeCt == null || msGroupShapeCt.getSpList().isEmpty()) {
return null;
}
return convertMsGroupToGroupShape(msGroupShapeCt, drawing);
}
private XSLFDiagramGroupShape convertMsGroupToGroupShape(CTGroupShape msGroupShapeCt, XSLFDiagramDrawing drawing) {
org.openxmlformats.schemas.presentationml.x2006.main.CTGroupShape groupShapeCt
= org.openxmlformats.schemas.presentationml.x2006.main.CTGroupShape.Factory.newInstance();
CTGroupShapeProperties groupShapePropsCt = groupShapeCt.addNewGrpSpPr();
CTGroupShapeNonVisual groupShapeNonVisualCt = groupShapeCt.addNewNvGrpSpPr();
final com.microsoft.schemas.office.drawing.x2008.diagram.CTGroupShapeNonVisual nvGrpSpPr =
msGroupShapeCt.getNvGrpSpPr();
if (nvGrpSpPr != null) {
groupShapeNonVisualCt.setCNvPr(nvGrpSpPr.getCNvPr());
groupShapeNonVisualCt.setCNvGrpSpPr(nvGrpSpPr.getCNvGrpSpPr());
}
groupShapeNonVisualCt.setNvPr(CTApplicationNonVisualDrawingProps.Factory.newInstance());
for (CTShape msShapeCt : msGroupShapeCt.getSpList()) {
List shapes = convertShape(msShapeCt);
groupShapeCt.getSpList().addAll(shapes);
}
Rectangle2D anchor = super.getAnchor();
Rectangle2D interiorAnchor = new Rectangle2D.Double(0, 0, anchor.getWidth(), anchor.getHeight());
XSLFDiagramGroupShape groupShape = new XSLFDiagramGroupShape(groupShapeCt, getSheet(), drawing);
groupShape.setAnchor(anchor);
groupShape.setInteriorAnchor(interiorAnchor);
groupShape.setRotation(super.getRotation());
return groupShape;
}
/**
* Simple wrapper around XSLFGroupShape to enable accessing underlying diagram relations correctly.
*
* Diagrams store relationships to media in `drawing#.xml.rels`. These relationships are accessible using
* {@link #getRelationById(String)}.
*/
public static class XSLFDiagramGroupShape extends XSLFGroupShape {
private XSLFDiagramDrawing diagramDrawing;
protected XSLFDiagramGroupShape(org.openxmlformats.schemas.presentationml.x2006.main.CTGroupShape shape,
XSLFSheet sheet) {
super(shape, sheet);
}
private XSLFDiagramGroupShape(org.openxmlformats.schemas.presentationml.x2006.main.CTGroupShape shape,
XSLFSheet sheet,
XSLFDiagramDrawing diagramDrawing) {
super(shape, sheet);
this.diagramDrawing = diagramDrawing;
}
public POIXMLDocumentPart getRelationById(String id) {
return diagramDrawing.getRelationById(id);
}
}
}