org.apache.poi.hslf.model.Freeform Maven / Gradle / Ivy
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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
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package org.apache.poi.hslf.model;
import java.awt.geom.AffineTransform;
import java.awt.geom.GeneralPath;
import java.awt.geom.PathIterator;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.apache.poi.ddf.EscherArrayProperty;
import org.apache.poi.ddf.EscherContainerRecord;
import org.apache.poi.ddf.EscherOptRecord;
import org.apache.poi.ddf.EscherProperties;
import org.apache.poi.ddf.EscherSimpleProperty;
import org.apache.poi.util.LittleEndian;
import org.apache.poi.util.POILogger;
/**
* A "Freeform" shape.
*
*
* Shapes drawn with the "Freeform" tool have cubic bezier curve segments in the smooth sections
* and straight-line segments in the straight sections. This object closely corresponds to java.awt.geom.GeneralPath.
*
* @author Yegor Kozlov
*/
public final class Freeform extends AutoShape {
public static final byte[] SEGMENTINFO_MOVETO = new byte[]{0x00, 0x40};
public static final byte[] SEGMENTINFO_LINETO = new byte[]{0x00, (byte)0xAC};
public static final byte[] SEGMENTINFO_ESCAPE = new byte[]{0x01, 0x00};
public static final byte[] SEGMENTINFO_ESCAPE2 = new byte[]{0x01, 0x20};
public static final byte[] SEGMENTINFO_CUBICTO = new byte[]{0x00, (byte)0xAD};
public static final byte[] SEGMENTINFO_CUBICTO2 = new byte[]{0x00, (byte)0xB3}; //OpenOffice inserts 0xB3 instead of 0xAD.
public static final byte[] SEGMENTINFO_CLOSE = new byte[]{0x01, (byte)0x60};
public static final byte[] SEGMENTINFO_END = new byte[]{0x00, (byte)0x80};
/**
* Create a Freeform object and initialize it from the supplied Record container.
*
* @param escherRecord EscherSpContainer container which holds information about this shape
* @param parent the parent of the shape
*/
protected Freeform(EscherContainerRecord escherRecord, Shape parent){
super(escherRecord, parent);
}
/**
* Create a new Freeform. This constructor is used when a new shape is created.
*
* @param parent the parent of this Shape. For example, if this text box is a cell
* in a table then the parent is Table.
*/
public Freeform(Shape parent){
super(null, parent);
_escherContainer = createSpContainer(ShapeTypes.NotPrimitive, parent instanceof ShapeGroup);
}
/**
* Create a new Freeform. This constructor is used when a new shape is created.
*
*/
public Freeform(){
this(null);
}
/**
* Set the shape path
*
* @param path
*/
public void setPath(GeneralPath path)
{
Rectangle2D bounds = path.getBounds2D();
PathIterator it = path.getPathIterator(new AffineTransform());
List segInfo = new ArrayList();
List pntInfo = new ArrayList();
boolean isClosed = false;
while (!it.isDone()) {
double[] vals = new double[6];
int type = it.currentSegment(vals);
switch (type) {
case PathIterator.SEG_MOVETO:
pntInfo.add(new Point2D.Double(vals[0], vals[1]));
segInfo.add(SEGMENTINFO_MOVETO);
break;
case PathIterator.SEG_LINETO:
pntInfo.add(new Point2D.Double(vals[0], vals[1]));
segInfo.add(SEGMENTINFO_LINETO);
segInfo.add(SEGMENTINFO_ESCAPE);
break;
case PathIterator.SEG_CUBICTO:
pntInfo.add(new Point2D.Double(vals[0], vals[1]));
pntInfo.add(new Point2D.Double(vals[2], vals[3]));
pntInfo.add(new Point2D.Double(vals[4], vals[5]));
segInfo.add(SEGMENTINFO_CUBICTO);
segInfo.add(SEGMENTINFO_ESCAPE2);
break;
case PathIterator.SEG_QUADTO:
//TODO: figure out how to convert SEG_QUADTO into SEG_CUBICTO
logger.log(POILogger.WARN, "SEG_QUADTO is not supported");
break;
case PathIterator.SEG_CLOSE:
pntInfo.add(pntInfo.get(0));
segInfo.add(SEGMENTINFO_LINETO);
segInfo.add(SEGMENTINFO_ESCAPE);
segInfo.add(SEGMENTINFO_LINETO);
segInfo.add(SEGMENTINFO_CLOSE);
isClosed = true;
break;
}
it.next();
}
if(!isClosed) segInfo.add(SEGMENTINFO_LINETO);
segInfo.add(new byte[]{0x00, (byte)0x80});
EscherOptRecord opt = (EscherOptRecord)getEscherChild(_escherContainer, EscherOptRecord.RECORD_ID);
opt.addEscherProperty(new EscherSimpleProperty(EscherProperties.GEOMETRY__SHAPEPATH, 0x4));
EscherArrayProperty verticesProp = new EscherArrayProperty((short)(EscherProperties.GEOMETRY__VERTICES + 0x4000), false, null);
verticesProp.setNumberOfElementsInArray(pntInfo.size());
verticesProp.setNumberOfElementsInMemory(pntInfo.size());
verticesProp.setSizeOfElements(0xFFF0);
for (int i = 0; i < pntInfo.size(); i++) {
Point2D.Double pnt = pntInfo.get(i);
byte[] data = new byte[4];
LittleEndian.putShort(data, 0, (short)((pnt.getX() - bounds.getX())*MASTER_DPI/POINT_DPI));
LittleEndian.putShort(data, 2, (short)((pnt.getY() - bounds.getY())*MASTER_DPI/POINT_DPI));
verticesProp.setElement(i, data);
}
opt.addEscherProperty(verticesProp);
EscherArrayProperty segmentsProp = new EscherArrayProperty((short)(EscherProperties.GEOMETRY__SEGMENTINFO + 0x4000), false, null);
segmentsProp.setNumberOfElementsInArray(segInfo.size());
segmentsProp.setNumberOfElementsInMemory(segInfo.size());
segmentsProp.setSizeOfElements(0x2);
for (int i = 0; i < segInfo.size(); i++) {
byte[] seg = segInfo.get(i);
segmentsProp.setElement(i, seg);
}
opt.addEscherProperty(segmentsProp);
opt.addEscherProperty(new EscherSimpleProperty(EscherProperties.GEOMETRY__RIGHT, (int)(bounds.getWidth()*MASTER_DPI/POINT_DPI)));
opt.addEscherProperty(new EscherSimpleProperty(EscherProperties.GEOMETRY__BOTTOM, (int)(bounds.getHeight()*MASTER_DPI/POINT_DPI)));
opt.sortProperties();
setAnchor(bounds);
}
/**
* Gets the freeform path
*
* @return the freeform path
*/
public GeneralPath getPath(){
EscherOptRecord opt = (EscherOptRecord)getEscherChild(_escherContainer, EscherOptRecord.RECORD_ID);
opt.addEscherProperty(new EscherSimpleProperty(EscherProperties.GEOMETRY__SHAPEPATH, 0x4));
EscherArrayProperty verticesProp = (EscherArrayProperty)getEscherProperty(opt, (short)(EscherProperties.GEOMETRY__VERTICES + 0x4000));
if(verticesProp == null) verticesProp = (EscherArrayProperty)getEscherProperty(opt, EscherProperties.GEOMETRY__VERTICES);
EscherArrayProperty segmentsProp = (EscherArrayProperty)getEscherProperty(opt, (short)(EscherProperties.GEOMETRY__SEGMENTINFO + 0x4000));
if(segmentsProp == null) segmentsProp = (EscherArrayProperty)getEscherProperty(opt, EscherProperties.GEOMETRY__SEGMENTINFO);
//sanity check
if(verticesProp == null) {
logger.log(POILogger.WARN, "Freeform is missing GEOMETRY__VERTICES ");
return null;
}
if(segmentsProp == null) {
logger.log(POILogger.WARN, "Freeform is missing GEOMETRY__SEGMENTINFO ");
return null;
}
GeneralPath path = new GeneralPath();
int numPoints = verticesProp.getNumberOfElementsInArray();
int numSegments = segmentsProp.getNumberOfElementsInArray();
for (int i = 0, j = 0; i < numSegments && j < numPoints; i++) {
byte[] elem = segmentsProp.getElement(i);
if(Arrays.equals(elem, SEGMENTINFO_MOVETO)){
byte[] p = verticesProp.getElement(j++);
short x = LittleEndian.getShort(p, 0);
short y = LittleEndian.getShort(p, 2);
path.moveTo(
((float)x*POINT_DPI/MASTER_DPI),
((float)y*POINT_DPI/MASTER_DPI));
} else if (Arrays.equals(elem, SEGMENTINFO_CUBICTO) || Arrays.equals(elem, SEGMENTINFO_CUBICTO2)){
i++;
byte[] p1 = verticesProp.getElement(j++);
short x1 = LittleEndian.getShort(p1, 0);
short y1 = LittleEndian.getShort(p1, 2);
byte[] p2 = verticesProp.getElement(j++);
short x2 = LittleEndian.getShort(p2, 0);
short y2 = LittleEndian.getShort(p2, 2);
byte[] p3 = verticesProp.getElement(j++);
short x3 = LittleEndian.getShort(p3, 0);
short y3 = LittleEndian.getShort(p3, 2);
path.curveTo(
((float)x1*POINT_DPI/MASTER_DPI), ((float)y1*POINT_DPI/MASTER_DPI),
((float)x2*POINT_DPI/MASTER_DPI), ((float)y2*POINT_DPI/MASTER_DPI),
((float)x3*POINT_DPI/MASTER_DPI), ((float)y3*POINT_DPI/MASTER_DPI));
} else if (Arrays.equals(elem, SEGMENTINFO_LINETO)){
i++;
byte[] pnext = segmentsProp.getElement(i);
if(Arrays.equals(pnext, SEGMENTINFO_ESCAPE)){
if(j + 1 < numPoints){
byte[] p = verticesProp.getElement(j++);
short x = LittleEndian.getShort(p, 0);
short y = LittleEndian.getShort(p, 2);
path.lineTo(
((float)x*POINT_DPI/MASTER_DPI), ((float)y*POINT_DPI/MASTER_DPI));
}
} else if (Arrays.equals(pnext, SEGMENTINFO_CLOSE)){
path.closePath();
}
}
}
return path;
}
public java.awt.Shape getOutline(){
GeneralPath path = getPath();
Rectangle2D anchor = getAnchor2D();
Rectangle2D bounds = path.getBounds2D();
AffineTransform at = new AffineTransform();
at.translate(anchor.getX(), anchor.getY());
at.scale(
anchor.getWidth()/bounds.getWidth(),
anchor.getHeight()/bounds.getHeight()
);
return at.createTransformedShape(path);
}
}