org.apache.poi.xssf.usermodel.XSSFPicture 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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http://www.apache.org/licenses/LICENSE-2.0
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See the License for the specific language governing permissions and
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package org.apache.poi.xssf.usermodel;
import java.awt.Dimension;
import java.io.IOException;
import java.io.InputStream;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.poi.openxml4j.opc.PackagePart;
import org.apache.poi.openxml4j.opc.PackageRelationship;
import org.apache.poi.ss.usermodel.Picture;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.util.ImageUtils;
import org.apache.poi.util.Internal;
import org.openxmlformats.schemas.drawingml.x2006.main.CTBlipFillProperties;
import org.openxmlformats.schemas.drawingml.x2006.main.CTNonVisualDrawingProps;
import org.openxmlformats.schemas.drawingml.x2006.main.CTNonVisualPictureProperties;
import org.openxmlformats.schemas.drawingml.x2006.main.CTPoint2D;
import org.openxmlformats.schemas.drawingml.x2006.main.CTPositiveSize2D;
import org.openxmlformats.schemas.drawingml.x2006.main.CTPresetGeometry2D;
import org.openxmlformats.schemas.drawingml.x2006.main.CTShapeProperties;
import org.openxmlformats.schemas.drawingml.x2006.main.CTTransform2D;
import org.openxmlformats.schemas.drawingml.x2006.main.STShapeType;
import org.openxmlformats.schemas.drawingml.x2006.spreadsheetDrawing.CTPicture;
import org.openxmlformats.schemas.drawingml.x2006.spreadsheetDrawing.CTPictureNonVisual;
/**
* Represents a picture shape in a SpreadsheetML drawing.
*/
public final class XSSFPicture extends XSSFShape implements Picture {
private static final Logger LOG = LogManager.getLogger(XSSFPicture.class);
/*
* Column width measured as the number of characters of the maximum digit width of the
* numbers 0, 1, 2, ..., 9 as rendered in the normal style's font. There are 4 pixels of margin
* padding (two on each side), plus 1 pixel padding for the gridlines.
*
* This value is the same for default font in Office 2007 (Calibri) and Office 2003 and earlier (Arial)
*/
// private static float DEFAULT_COLUMN_WIDTH = 9.140625f;
/**
* A default instance of CTShape used for creating new shapes.
*/
private static CTPicture prototype;
/**
* This object specifies a picture object and all its properties
*/
private final CTPicture ctPicture;
/**
* Construct a new XSSFPicture object. This constructor is called from
* {@link XSSFDrawing#createPicture(XSSFClientAnchor, int)}
*
* @param drawing the XSSFDrawing that owns this picture
*/
protected XSSFPicture(XSSFDrawing drawing, CTPicture ctPicture){
this.drawing = drawing;
this.ctPicture = ctPicture;
}
/**
* Returns a prototype that is used to construct new shapes
*
* @return a prototype that is used to construct new shapes
*/
protected static CTPicture prototype(){
if(prototype == null) {
CTPicture pic = CTPicture.Factory.newInstance();
CTPictureNonVisual nvpr = pic.addNewNvPicPr();
CTNonVisualDrawingProps nvProps = nvpr.addNewCNvPr();
nvProps.setId(1);
nvProps.setName("Picture 1");
nvProps.setDescr("Picture");
CTNonVisualPictureProperties nvPicProps = nvpr.addNewCNvPicPr();
nvPicProps.addNewPicLocks().setNoChangeAspect(true);
CTBlipFillProperties blip = pic.addNewBlipFill();
blip.addNewBlip().setEmbed("");
blip.addNewStretch().addNewFillRect();
CTShapeProperties sppr = pic.addNewSpPr();
CTTransform2D t2d = sppr.addNewXfrm();
CTPositiveSize2D ext = t2d.addNewExt();
//should be original picture width and height expressed in EMUs
ext.setCx(0);
ext.setCy(0);
CTPoint2D off = t2d.addNewOff();
off.setX(0);
off.setY(0);
CTPresetGeometry2D prstGeom = sppr.addNewPrstGeom();
prstGeom.setPrst(STShapeType.RECT);
prstGeom.addNewAvLst();
prototype = pic;
}
return prototype;
}
/**
* Link this shape with the picture data
*
* @param rel relationship referring the picture data
*/
protected void setPictureReference(PackageRelationship rel){
ctPicture.getBlipFill().getBlip().setEmbed(rel.getId());
}
/**
* Return the underlying CTPicture bean that holds all properties for this picture
*
* @return the underlying CTPicture bean
*/
@Internal
public CTPicture getCTPicture(){
return ctPicture;
}
/**
* Reset the image to the dimension of the embedded image
*
* @see #resize(double, double)
*/
@Override
public void resize(){
resize(Double.MAX_VALUE);
}
/**
* Resize the image proportionally.
*
* @see #resize(double, double)
*/
@Override
public void resize(double scale) {
resize(scale, scale);
}
/**
* Resize the image relatively to its current size.
*
* Please note, that this method works correctly only for workbooks
* with the default font size (Calibri 11pt for .xlsx).
* If the default font is changed the resized image can be stretched vertically or horizontally.
*
* {@code resize(1.0,1.0)} keeps the original size,
* {@code resize(0.5,0.5)} resize to 50% of the original,
* {@code resize(2.0,2.0)} resizes to 200% of the original.
* resize({@link Double#MAX_VALUE},{@link Double#MAX_VALUE}) resizes to the dimension of the embedded image.
*
* @param scaleX the amount by which the image width is multiplied relative to the original width,
* when set to {@link Double#MAX_VALUE} the width of the embedded image is used
* @param scaleY the amount by which the image height is multiplied relative to the original height,
* when set to {@link Double#MAX_VALUE} the height of the embedded image is used
*/
@Override
public void resize(double scaleX, double scaleY){
XSSFClientAnchor anchor = getClientAnchor();
XSSFClientAnchor pref = getPreferredSize(scaleX,scaleY);
if (anchor == null || pref == null) {
LOG.atWarn().log("picture is not anchored via client anchor - ignoring resize call");
return;
}
int row2 = anchor.getRow1() + (pref.getRow2() - pref.getRow1());
int col2 = anchor.getCol1() + (pref.getCol2() - pref.getCol1());
anchor.setCol2(col2);
// anchor.setDx1(0);
anchor.setDx2(pref.getDx2());
anchor.setRow2(row2);
// anchor.setDy1(0);
anchor.setDy2(pref.getDy2());
}
/**
* Calculate the preferred size for this picture.
*
* @return XSSFClientAnchor with the preferred size for this image
*/
@Override
public XSSFClientAnchor getPreferredSize(){
return getPreferredSize(1);
}
/**
* Calculate the preferred size for this picture.
*
* @param scale the amount by which image dimensions are multiplied relative to the original size.
* @return XSSFClientAnchor with the preferred size for this image
*/
public XSSFClientAnchor getPreferredSize(double scale){
return getPreferredSize(scale, scale);
}
/**
* Calculate the preferred size for this picture.
*
* @param scaleX the amount by which image width is multiplied relative to the original width.
* @param scaleY the amount by which image height is multiplied relative to the original height.
* @return XSSFClientAnchor with the preferred size for this image
*/
@Override
public XSSFClientAnchor getPreferredSize(double scaleX, double scaleY){
Dimension dim = ImageUtils.setPreferredSize(this, scaleX, scaleY);
CTPositiveSize2D size2d = ctPicture.getSpPr().getXfrm().getExt();
size2d.setCx((int)dim.getWidth());
size2d.setCy((int)dim.getHeight());
return getClientAnchor();
}
/**
* Return the dimension of this image
*
* @param part the package part holding raw picture data
* @param type type of the picture: {@link Workbook#PICTURE_TYPE_JPEG},
* {@link Workbook#PICTURE_TYPE_PNG} or {@link Workbook#PICTURE_TYPE_DIB}
*
* @return image dimension in pixels
*/
protected static Dimension getImageDimension(PackagePart part, int type){
try (InputStream stream = part.getInputStream()) {
return ImageUtils.getImageDimension(stream, type);
} catch (IOException e){
//return a "singulariry" if ImageIO failed to read the image
LOG.atWarn().withThrowable(e).log("Failed to read image");
return new Dimension();
}
}
/**
* Return the dimension of the embedded image in pixel
*
* @return image dimension in pixels
*/
@Override
public Dimension getImageDimension() {
XSSFPictureData picData = getPictureData();
return getImageDimension(picData.getPackagePart(), picData.getPictureType());
}
/**
* Return picture data for this shape
*
* @return picture data for this shape
*/
@Override
public XSSFPictureData getPictureData() {
String blipId = ctPicture.getBlipFill().getBlip().getEmbed();
return (XSSFPictureData)getDrawing().getRelationById(blipId);
}
@Override
protected CTShapeProperties getShapeProperties(){
return ctPicture.getSpPr();
}
/**
* @return the anchor that is used by this shape.
*/
@Override
public XSSFClientAnchor getClientAnchor() {
XSSFAnchor a = getAnchor();
return (a instanceof XSSFClientAnchor) ? (XSSFClientAnchor)a : null;
}
/**
* @return the sheet which contains the picture shape
*/
@Override
public XSSFSheet getSheet() {
return (XSSFSheet)getDrawing().getParent();
}
@Override
public String getShapeName() {
return ctPicture.getNvPicPr().getCNvPr().getName();
}
}