Apache POI-HSSF distorts image size when adding picture into Excel cell

Question

I am adding a picture into a cell using Apache POI-HSSF. The image is 120x100 but no matter what I do and how I resize it, the Excel spreadsheet always shows it spanning multiple rows and distorts it to a much bigger height than width.

How do I keep the original size?

My code:

InputStream is = new FileInputStream(getImageURL());
byte[] bytes = IOUtils.toByteArray(is);
int pictureIdx = wb.addPicture(bytes, Workbook.PICTURE_TYPE_JPEG);
is.close();

//add a picture shape
CreationHelper helper = wb.getCreationHelper();
ClientAnchor anchor = helper.createClientAnchor();
// Create the drawing patriarch.  This is the top level container for all shapes.
Drawing drawing = sheet1.createDrawingPatriarch();
//set top-left corner of the picture,
//subsequent call of Picture#resize() will operate relative to it

anchor.setAnchorType(0);
anchor.setCol1(1);
anchor.setRow1(1);

Picture pict = drawing.createPicture(anchor, pictureIdx);

//auto-size picture relative to its top-left corner
pict.resize();

I've tried all dx/dy coordinates and Col/Row. The position doesn't matter, the problem it stretches the image horizontally.

Answer 1

I had been facing the similar issue where the image I added was getting distorted. I tried pict.resize() and sheet.autoSizeColumn() but it didn't work. Finally I found the below URL:- https://svn.apache.org/repos/asf/poi/trunk/src/examples/src/org/apache/poi/examples/ss/AddDimensionedImage.java

I added the above class into my code and used it's method to add the image into excel. I was able to add the image with little distortion. Hope this helps to you also. I wrote below code:-

BufferedImage imageIO = ImageIO.read(new URL(image));
int height= imageIO.getHeight();
int width=imageIO.getWidth();
int relativeHeight=(int)(((double)height/width)*28.5);
new AddDimensionedImage().addImageToSheet(2,  sheet.getPhysicalNumberOfRows()-1 , sheet, sheet.createDrawingPatriarch(),new URL(image), 30, relativeHeight, AddDimensionedImage.EXPAND_ROW);