Examples with EscherMetafileBlip org.apache.poi.ddf.EscherMetafileBlip used on opensource projects

Example 1 with EscherMetafileBlip

use of org.apache.poi.ddf.EscherMetafileBlip in project poi by apache.

the class HSSFWorkbook method addPicture.

/**
     * Adds a picture to the workbook.
     *
     * @param pictureData       The bytes of the picture
     * @param format            The format of the picture.  One of <code>PICTURE_TYPE_*</code>
     *
     * @return the index to this picture (1 based).
     * @see #PICTURE_TYPE_WMF
     * @see #PICTURE_TYPE_EMF
     * @see #PICTURE_TYPE_PICT
     * @see #PICTURE_TYPE_PNG
     * @see #PICTURE_TYPE_JPEG
     * @see #PICTURE_TYPE_DIB
     */
@SuppressWarnings("fallthrough")
@Override
public int addPicture(byte[] pictureData, int format) {
    initDrawings();
    byte[] uid = DigestUtils.md5(pictureData);
    EscherBlipRecord blipRecord;
    int blipSize;
    short escherTag;
    switch(format) {
        case PICTURE_TYPE_WMF:
            // see also http://de.wikipedia.org/wiki/Windows_Metafile#Hinweise_zur_WMF-Spezifikation
            if (LittleEndian.getInt(pictureData) == 0x9AC6CDD7) {
                byte[] picDataNoHeader = new byte[pictureData.length - 22];
                System.arraycopy(pictureData, 22, picDataNoHeader, 0, pictureData.length - 22);
                pictureData = picDataNoHeader;
            }
        // fall through
        case PICTURE_TYPE_EMF:
            EscherMetafileBlip blipRecordMeta = new EscherMetafileBlip();
            blipRecord = blipRecordMeta;
            blipRecordMeta.setUID(uid);
            blipRecordMeta.setPictureData(pictureData);
            // taken from libre office export, it won't open, if this is left to 0
            blipRecordMeta.setFilter((byte) -2);
            blipSize = blipRecordMeta.getCompressedSize() + 58;
            escherTag = 0;
            break;
        default:
            EscherBitmapBlip blipRecordBitmap = new EscherBitmapBlip();
            blipRecord = blipRecordBitmap;
            blipRecordBitmap.setUID(uid);
            blipRecordBitmap.setMarker((byte) 0xFF);
            blipRecordBitmap.setPictureData(pictureData);
            blipSize = pictureData.length + 25;
            escherTag = (short) 0xFF;
            break;
    }
    blipRecord.setRecordId((short) (EscherBlipRecord.RECORD_ID_START + format));
    switch(format) {
        case PICTURE_TYPE_EMF:
            blipRecord.setOptions(HSSFPictureData.MSOBI_EMF);
            break;
        case PICTURE_TYPE_WMF:
            blipRecord.setOptions(HSSFPictureData.MSOBI_WMF);
            break;
        case PICTURE_TYPE_PICT:
            blipRecord.setOptions(HSSFPictureData.MSOBI_PICT);
            break;
        case PICTURE_TYPE_PNG:
            blipRecord.setOptions(HSSFPictureData.MSOBI_PNG);
            break;
        case PICTURE_TYPE_JPEG:
            blipRecord.setOptions(HSSFPictureData.MSOBI_JPEG);
            break;
        case PICTURE_TYPE_DIB:
            blipRecord.setOptions(HSSFPictureData.MSOBI_DIB);
            break;
        default:
            throw new IllegalStateException("Unexpected picture format: " + format);
    }
    EscherBSERecord r = new EscherBSERecord();
    r.setRecordId(EscherBSERecord.RECORD_ID);
    r.setOptions((short) (0x0002 | (format << 4)));
    r.setBlipTypeMacOS((byte) format);
    r.setBlipTypeWin32((byte) format);
    r.setUid(uid);
    r.setTag(escherTag);
    r.setSize(blipSize);
    r.setRef(0);
    r.setOffset(0);
    r.setBlipRecord(blipRecord);
    return workbook.addBSERecord(r);
}