Examples with ImageHeaderWMF org.apache.poi.sl.image.ImageHeaderWMF used on opensource projects

Example 1 with ImageHeaderWMF

use of org.apache.poi.sl.image.ImageHeaderWMF in project poi by apache.

the class XSLFPictureData method cacheProperties.

/**
     * Determine and cache image properties
     */
protected void cacheProperties() {
    if (origSize == null || checksum == null) {
        byte[] data = getData();
        checksum = IOUtils.calculateChecksum(data);
        PictureType pt = getType();
        if (pt == null) {
            origSize = new Dimension(1, 1);
            return;
        }
        switch(pt) {
            case EMF:
                origSize = new ImageHeaderEMF(data, 0).getSize();
                break;
            case WMF:
                // wmf files in pptx usually have their placeable header 
                // stripped away, so this returns only the dummy size
                origSize = new ImageHeaderWMF(data, 0).getSize();
                break;
            case PICT:
                origSize = new ImageHeaderPICT(data, 0).getSize();
                break;
            default:
                origSize = new ImageHeaderBitmap(data, 0).getSize();
                break;
        }
    }
}

Example 2 with ImageHeaderWMF

use of org.apache.poi.sl.image.ImageHeaderWMF in project poi by apache.

the class WMF method setData.

@Override
public void setData(byte[] data) throws IOException {
    int pos = 0;
    ImageHeaderWMF nHeader = new ImageHeaderWMF(data, pos);
    pos += nHeader.getLength();
    byte[] compressed = compress(data, pos, data.length - pos);
    Header header = new Header();
    header.setWmfSize(data.length - nHeader.getLength());
    header.setBounds(nHeader.getBounds());
    Dimension nDim = nHeader.getSize();
    header.setDimension(new Dimension(Units.toEMU(nDim.getWidth()), Units.toEMU(nDim.getHeight())));
    header.setZipSize(compressed.length);
    byte[] checksum = getChecksum(data);
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    out.write(checksum);
    if (getUIDInstanceCount() == 2) {
        out.write(checksum);
    }
    header.write(out);
    out.write(compressed);
    setRawData(out.toByteArray());
}

Example 3 with ImageHeaderWMF

use of org.apache.poi.sl.image.ImageHeaderWMF in project poi by apache.

the class WMF method getData.

@Override
public byte[] getData() {
    try {
        byte[] rawdata = getRawData();
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        InputStream is = new ByteArrayInputStream(rawdata);
        Header header = new Header();
        header.read(rawdata, CHECKSUM_SIZE * getUIDInstanceCount());
        long len = is.skip(header.getSize() + (long) CHECKSUM_SIZE * getUIDInstanceCount());
        assert (len == header.getSize() + CHECKSUM_SIZE * getUIDInstanceCount());
        ImageHeaderWMF aldus = new ImageHeaderWMF(header.getBounds());
        aldus.write(out);
        InflaterInputStream inflater = new InflaterInputStream(is);
        byte[] chunk = new byte[4096];
        int count;
        while ((count = inflater.read(chunk)) >= 0) {
            out.write(chunk, 0, count);
        }
        inflater.close();
        return out.toByteArray();
    } catch (IOException e) {
        throw new HSLFException(e);
    }
}

Example 4 with ImageHeaderWMF

use of org.apache.poi.sl.image.ImageHeaderWMF in project poi by apache.

the class TestPictures method testWMF.

/**
     * Test read/write WMF
     */
@Test
public void testWMF() throws IOException {
    HSLFSlideShow ppt = new HSLFSlideShow();
    HSLFSlide slide = ppt.createSlide();
    byte[] src_bytes = slTests.readFile("santa.wmf");
    HSLFPictureData data = ppt.addPicture(src_bytes, PictureType.WMF);
    ImageHeaderWMF nHeader = new ImageHeaderWMF(src_bytes, 0);
    final int expWidth = 136, expHeight = 146;
    Dimension nDim = nHeader.getSize();
    assertEquals(expWidth, nDim.getWidth(), 0);
    assertEquals(expHeight, nDim.getHeight(), 0);
    Dimension dim = data.getImageDimensionInPixels();
    assertEquals(Units.pointsToPixel(expWidth), dim.getWidth(), 0);
    assertEquals(Units.pointsToPixel(expHeight), dim.getHeight(), 0);
    HSLFPictureShape pict = new HSLFPictureShape(data);
    assertEquals(data.getIndex(), pict.getPictureIndex());
    slide.addShape(pict);
    //serialize and read again
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    ppt.write(out);
    out.close();
    ppt = new HSLFSlideShow(new HSLFSlideShowImpl(new ByteArrayInputStream(out.toByteArray())));
    //make sure we can read this picture shape and it refers to the correct picture data
    List<HSLFShape> sh = ppt.getSlides().get(0).getShapes();
    assertEquals(1, sh.size());
    pict = (HSLFPictureShape) sh.get(0);
    assertEquals(data.getIndex(), pict.getPictureIndex());
    //check picture data
    List<HSLFPictureData> pictures = ppt.getPictureData();
    assertEquals(1, pictures.size());
    HSLFPictureData pd = pictures.get(0);
    dim = pd.getImageDimension();
    assertEquals(expWidth, dim.width);
    assertEquals(expHeight, dim.height);
    //the Picture shape refers to the PictureData object in the Presentation
    assertEquals(pict.getPictureData(), pd);
    assertEquals(PictureType.WMF, pd.getType());
    assertTrue(pd instanceof WMF);
    //compare the content of the initial file with what is stored in the PictureData
    byte[] ppt_bytes = pd.getData();
    assertEquals(src_bytes.length, ppt_bytes.length);
    //in WMF the first 22 bytes - is a metafile header
    byte[] b1 = new byte[src_bytes.length - 22];
    System.arraycopy(src_bytes, 22, b1, 0, b1.length);
    byte[] b2 = new byte[ppt_bytes.length - 22];
    System.arraycopy(ppt_bytes, 22, b2, 0, b2.length);
    assertArrayEquals(b1, b2);
}