Example usage for org.apache.poi.ss.usermodel Picture getImageDimension

Introduction

In this page you can find the example usage for org.apache.poi.ss.usermodel Picture getImageDimension.

Prototype

Dimension getImageDimension();

Source Link

Document

Return the dimension of the embedded image in pixel

Usage

From source file:nc.noumea.mairie.appock.util.StockSpreadsheetExporter.java

License:Open Source License

private static void addImage(XSSFWorkbook workbook, XSSFSheet worksheet, File file, int rowNum)
        throws IOException {
    //add picture data to this workbook.
    InputStream is = new FileInputStream(file);
    byte[] bytes = IOUtils.toByteArray(is);
    int pictureIdx = workbook.addPicture(bytes, Workbook.PICTURE_TYPE_PNG);
    is.close();//from  w  ww.j av a  2s  . c  o m

    XSSFDrawing drawing = worksheet.createDrawingPatriarch();

    //add a picture shape
    XSSFClientAnchor anchor = workbook.getCreationHelper().createClientAnchor();
    anchor.setAnchorType(ClientAnchor.AnchorType.MOVE_DONT_RESIZE);
    //set top-left corner of the picture,
    //subsequent call of Picture#resize() will operate relative to it
    anchor.setCol1(0);
    anchor.setRow1(rowNum);

    Picture pict = drawing.createPicture(anchor, pictureIdx);
    //auto-size picture relative to its top-left corner
    pict.resize();

    //get the picture width
    int pictWidthPx = pict.getImageDimension().width;
    int pictHeightPt = pict.getImageDimension().height;

    //get the cell width
    float cellWidthPx = worksheet.getColumnWidthInPixels(0);
    float cellHeightPx = ConvertImageUnits.heightUnits2Pixel(worksheet.getRow(rowNum).getHeight());

    //calculate the center position
    int centerPosPx = Math.round(cellWidthPx / 2f - (float) pictWidthPx / 2f);
    int centerPosPy = Math.round(cellHeightPx / 2f - (float) pictHeightPt / 2f + 10);

    //set the new upper left anchor position
    anchor.setCol1(0);
    //set the remaining pixels up to the center position as Dx in unit EMU
    anchor.setDx1(centerPosPx * Units.EMU_PER_PIXEL);
    anchor.setDy1(centerPosPy * Units.EMU_PER_PIXEL);

    //resize the pictutre to original size again
    //this will determine the new bottom rigth anchor position
    pict.resize();

}

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