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/*
* ====================================================================
* 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 java.awt.geom.AffineTransform;
import java.awt.geom.Path2D;
import java.awt.geom.PathIterator;
import java.awt.geom.Rectangle2D;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.poi.ooxml.util.POIXMLUnits;
import org.apache.poi.sl.draw.geom.CustomGeometry;
import org.apache.poi.sl.usermodel.FreeformShape;
import org.apache.poi.util.Beta;
import org.apache.poi.util.Units;
import org.apache.poi.xslf.draw.geom.XSLFCustomGeometry;
import org.apache.xmlbeans.XmlCursor;
import org.apache.xmlbeans.XmlObject;
import org.openxmlformats.schemas.drawingml.x2006.main.CTAdjPoint2D;
import org.openxmlformats.schemas.drawingml.x2006.main.CTCustomGeometry2D;
import org.openxmlformats.schemas.drawingml.x2006.main.CTGeomRect;
import org.openxmlformats.schemas.drawingml.x2006.main.CTNonVisualDrawingProps;
import org.openxmlformats.schemas.drawingml.x2006.main.CTPath2D;
import org.openxmlformats.schemas.drawingml.x2006.main.CTPath2DClose;
import org.openxmlformats.schemas.drawingml.x2006.main.CTPath2DCubicBezierTo;
import org.openxmlformats.schemas.drawingml.x2006.main.CTPath2DLineTo;
import org.openxmlformats.schemas.drawingml.x2006.main.CTPath2DMoveTo;
import org.openxmlformats.schemas.drawingml.x2006.main.CTPath2DQuadBezierTo;
import org.openxmlformats.schemas.drawingml.x2006.main.CTShapeProperties;
import org.openxmlformats.schemas.drawingml.x2006.main.CTTransform2D;
import org.openxmlformats.schemas.presentationml.x2006.main.CTShape;
import org.openxmlformats.schemas.presentationml.x2006.main.CTShapeNonVisual;
/**
* Represents a custom geometric shape.
* This shape will consist of a series of lines and curves described within a creation path.
*/
@Beta
public class XSLFFreeformShape extends XSLFAutoShape
implements FreeformShape {
private static final Logger LOG = LogManager.getLogger(XSLFFreeformShape.class);
/*package*/ XSLFFreeformShape(CTShape shape, XSLFSheet sheet) {
super(shape, sheet);
}
@Override
public int setPath(final Path2D path) {
final CTPath2D ctPath = CTPath2D.Factory.newInstance();
final Rectangle2D bounds = path.getBounds2D();
final int x0 = Units.toEMU(bounds.getX());
final int y0 = Units.toEMU(bounds.getY());
final PathIterator it = path.getPathIterator(new AffineTransform());
int numPoints = 0;
ctPath.setH(Units.toEMU(bounds.getHeight()));
ctPath.setW(Units.toEMU(bounds.getWidth()));
final double[] vals = new double[6];
while (!it.isDone()) {
final int type = it.currentSegment(vals);
final CTAdjPoint2D[] points;
switch (type) {
case PathIterator.SEG_MOVETO:
points = addMoveTo(ctPath);
break;
case PathIterator.SEG_LINETO:
points = addLineTo(ctPath);
break;
case PathIterator.SEG_QUADTO:
points = addQuadBezierTo(ctPath);
break;
case PathIterator.SEG_CUBICTO:
points = addCubicBezierTo(ctPath);
break;
case PathIterator.SEG_CLOSE:
points = addClosePath(ctPath);
break;
default: {
throw new IllegalStateException("Unrecognized path segment type: " + type);
}
}
int i=0;
for (final CTAdjPoint2D point : points) {
point.setX(Units.toEMU(vals[i++])-x0);
point.setY(Units.toEMU(vals[i++])-y0);
}
numPoints += Math.max(points.length, 1);
it.next();
}
XmlObject xo = getShapeProperties();
if (!(xo instanceof CTShapeProperties)) {
return -1;
}
((CTShapeProperties)xo).getCustGeom().getPathLst().setPathArray(new CTPath2D[]{ctPath});
setAnchor(bounds);
return numPoints;
}
/**
* @return definition of the shape geometry
*/
@Override
public CustomGeometry getGeometry() {
final XmlObject xo = getShapeProperties();
if (!(xo instanceof CTShapeProperties)) {
return null;
}
return XSLFCustomGeometry.convertCustomGeometry(((CTShapeProperties)xo).getCustGeom());
}
@Override
public Path2D.Double getPath() {
final Path2D.Double path = new Path2D.Double();
final XmlObject xo = getShapeProperties();
if (!(xo instanceof CTShapeProperties)) {
return null;
}
final CTCustomGeometry2D geom = ((CTShapeProperties)xo).getCustGeom();
for(CTPath2D spPath : geom.getPathLst().getPathArray()) {
try (XmlCursor cursor = spPath.newCursor()) {
if (cursor.toFirstChild()) {
do {
final XmlObject ch = cursor.getObject();
if (ch instanceof CTPath2DMoveTo) {
addMoveTo(path, (CTPath2DMoveTo)ch);
} else if (ch instanceof CTPath2DLineTo) {
addLineTo(path, (CTPath2DLineTo)ch);
} else if (ch instanceof CTPath2DQuadBezierTo) {
addQuadBezierTo(path, (CTPath2DQuadBezierTo)ch);
} else if (ch instanceof CTPath2DCubicBezierTo) {
addCubicBezierTo(path, (CTPath2DCubicBezierTo)ch);
} else if (ch instanceof CTPath2DClose) {
addClosePath(path);
} else {
LOG.atWarn().log("can't handle path of type {}", xo.getClass());
}
} while (cursor.toNextSibling());
}
}
}
// the created path starts at (x=0, y=0).
// this used to scale each path element to the path bounding box,
// but now the dimensions/relations are kept as-is
final AffineTransform at = new AffineTransform();
final CTTransform2D xfrm = getXfrm(false);
final Rectangle2D xfrm2d = new Rectangle2D.Double
(POIXMLUnits.parseLength(xfrm.getOff().xgetX()), POIXMLUnits.parseLength(xfrm.getOff().xgetY()), xfrm.getExt().getCx(), xfrm.getExt().getCy());
final Rectangle2D bounds = getAnchor();
at.translate(bounds.getX()+bounds.getCenterX(), bounds.getY()+bounds.getCenterY());
at.scale(1./Units.EMU_PER_POINT, 1./Units.EMU_PER_POINT);
at.translate(-xfrm2d.getCenterX(), -xfrm2d.getCenterY());
return new Path2D.Double(at.createTransformedShape(path));
}
private static CTAdjPoint2D[] addMoveTo(final CTPath2D path) {
return new CTAdjPoint2D[]{path.addNewMoveTo().addNewPt()};
}
private static void addMoveTo(final Path2D path, final CTPath2DMoveTo xo) {
final CTAdjPoint2D pt = xo.getPt();
path.moveTo((Long)pt.getX(), (Long)pt.getY());
}
private static CTAdjPoint2D[] addLineTo(final CTPath2D path) {
return new CTAdjPoint2D[]{path.addNewLnTo().addNewPt()};
}
private static void addLineTo(final Path2D path, final CTPath2DLineTo xo) {
final CTAdjPoint2D pt = xo.getPt();
path.lineTo((Long)pt.getX(), (Long)pt.getY());
}
private static CTAdjPoint2D[] addQuadBezierTo(final CTPath2D path) {
final CTPath2DQuadBezierTo bez = path.addNewQuadBezTo();
return new CTAdjPoint2D[]{ bez.addNewPt(), bez.addNewPt() };
}
private static void addQuadBezierTo(final Path2D path, final CTPath2DQuadBezierTo xo) {
final CTAdjPoint2D pt1 = xo.getPtArray(0);
final CTAdjPoint2D pt2 = xo.getPtArray(1);
path.quadTo((Long)pt1.getX(), (Long)pt1.getY(),
(Long)pt2.getX(), (Long)pt2.getY());
}
private static CTAdjPoint2D[] addCubicBezierTo(final CTPath2D path) {
final CTPath2DCubicBezierTo bez = path.addNewCubicBezTo();
return new CTAdjPoint2D[]{ bez.addNewPt(), bez.addNewPt(), bez.addNewPt() };
}
private static void addCubicBezierTo(final Path2D path, final CTPath2DCubicBezierTo xo) {
final CTAdjPoint2D pt1 = xo.getPtArray(0);
final CTAdjPoint2D pt2 = xo.getPtArray(1);
final CTAdjPoint2D pt3 = xo.getPtArray(2);
path.curveTo((Long)pt1.getX(), (Long)pt1.getY(),
(Long)pt2.getX(), (Long)pt2.getY(),
(Long)pt3.getX(), (Long)pt3.getY());
}
private static CTAdjPoint2D[] addClosePath(final CTPath2D path) {
path.addNewClose();
return new CTAdjPoint2D[0];
}
private static void addClosePath(final Path2D path) {
path.closePath();
}
/**
* @param shapeId 1-based shapeId
*/
static CTShape prototype(int shapeId) {
CTShape ct = CTShape.Factory.newInstance();
CTShapeNonVisual nvSpPr = ct.addNewNvSpPr();
CTNonVisualDrawingProps cnv = nvSpPr.addNewCNvPr();
cnv.setName("Freeform " + shapeId);
cnv.setId(shapeId);
nvSpPr.addNewCNvSpPr();
nvSpPr.addNewNvPr();
CTShapeProperties spPr = ct.addNewSpPr();
CTCustomGeometry2D geom = spPr.addNewCustGeom();
geom.addNewAvLst();
geom.addNewGdLst();
geom.addNewAhLst();
geom.addNewCxnLst();
CTGeomRect rect = geom.addNewRect();
rect.setR("r");
rect.setB("b");
rect.setT("t");
rect.setL("l");
geom.addNewPathLst();
return ct;
}
}
