testpictures.java

java 读写word excel ppt

        Picture pict = new Picture(idx);
        assertEquals(idx, pict.getPictureIndex());
        slide.addShape(pict);

        //serialize and read again
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        ppt.write(out);
        out.close();

        ppt = new SlideShow(new HSLFSlideShow(new ByteArrayInputStream(out.toByteArray())));

        //make sure we can read this picture shape and it refers to the correct picture data
        Shape[] sh = ppt.getSlides()[0].getShapes();
        assertEquals(1, sh.length);
        pict = (Picture)sh[0];
        assertEquals(idx, pict.getPictureIndex());

        //check picture data
        PictureData[] pictures = ppt.getPictureData();
        //the Picture shape refers to the PictureData object in the Presentation
        assertEquals(pict.getPictureData(), pictures[0]);

        assertEquals(1, pictures.length);
        assertEquals(Picture.JPEG, pictures[0].getType());
        assertTrue(pictures[0] instanceof JPEG);
        //compare the content of the initial file with what is stored in the PictureData
        byte[] src_bytes = read(img);
        byte[] ppt_bytes = pictures[0].getData();
        assertTrue(Arrays.equals(src_bytes, ppt_bytes));
    }

    /**
     * Test read/write DIB
     */
    public void testDIB() throws Exception {
        SlideShow ppt = new SlideShow();

        Slide slide = ppt.createSlide();
        File img = new File(cwd, "sci_cec.dib");
        
        // Check we can read the test DIB image
        assertTrue(img.exists());
        
        // Add the image
        int idx = ppt.addPicture(img, Picture.DIB);
        Picture pict = new Picture(idx);
        assertEquals(idx, pict.getPictureIndex());
        slide.addShape(pict);

        //serialize and read again
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        ppt.write(out);
        out.close();

        ppt = new SlideShow(new HSLFSlideShow(new ByteArrayInputStream(out.toByteArray())));

        //make sure we can read this picture shape and it refers to the correct picture data
        Shape[] sh = ppt.getSlides()[0].getShapes();
        assertEquals(1, sh.length);
        pict = (Picture)sh[0];
        assertEquals(idx, pict.getPictureIndex());

        //check picture data
        PictureData[] pictures = ppt.getPictureData();
        //the Picture shape refers to the PictureData object in the Presentation
        assertEquals(pict.getPictureData(), pictures[0]);

        assertEquals(1, pictures.length);
        assertEquals(Picture.DIB, pictures[0].getType());
        assertTrue(pictures[0] instanceof DIB);
        //compare the content of the initial file with what is stored in the PictureData
        byte[] src_bytes = read(img);
        byte[] ppt_bytes = pictures[0].getData();
        assertTrue(Arrays.equals(src_bytes, ppt_bytes));
    }

    /**
     * Read file into a byte array
     */
    protected byte[] read(File f) throws IOException {
        byte[] bytes = new byte[(int)f.length()];
        FileInputStream is = new FileInputStream(f);
        is.read(bytes);
        is.close();
        return bytes;
    }

    /**
     * Read pictures in different formats from a reference slide show
     */
    public void testReadPictures() throws Exception {

        byte[] src_bytes, ppt_bytes, b1, b2;
        Picture pict;
        PictureData pdata;

        SlideShow ppt = new SlideShow(new HSLFSlideShow(new File(cwd, "pictures.ppt").getPath()));
        Slide[] slides = ppt.getSlides();
        PictureData[] pictures = ppt.getPictureData();
        assertEquals(5, pictures.length);

        pict = (Picture)slides[0].getShapes()[0]; //the first slide contains JPEG
        pdata = pict.getPictureData();
        assertTrue(pdata instanceof JPEG);
        assertEquals(Picture.JPEG, pdata.getType());
        src_bytes = pdata.getData();
        ppt_bytes = read(new File(cwd, "clock.jpg"));
        assertTrue(Arrays.equals(src_bytes, ppt_bytes));

        pict = (Picture)slides[1].getShapes()[0]; //the second slide contains PNG
        pdata = pict.getPictureData();
        assertTrue(pdata instanceof PNG);
        assertEquals(Picture.PNG, pdata.getType());
        src_bytes = pdata.getData();
        ppt_bytes = read(new File(cwd, "tomcat.png"));
        assertTrue(Arrays.equals(src_bytes, ppt_bytes));

        pict = (Picture)slides[2].getShapes()[0]; //the third slide contains WMF
        pdata = pict.getPictureData();
        assertTrue(pdata instanceof WMF);
        assertEquals(Picture.WMF, pdata.getType());
        src_bytes = pdata.getData();
        ppt_bytes = read(new File(cwd, "santa.wmf"));
        assertEquals(src_bytes.length, ppt_bytes.length);
        //ignore the first 22 bytes - it is a WMF metafile header
        b1 = new byte[src_bytes.length-22];
        System.arraycopy(src_bytes, 22, b1, 0, b1.length);
        b2 = new byte[ppt_bytes.length-22];
        System.arraycopy(ppt_bytes, 22, b2, 0, b2.length);
        assertTrue(Arrays.equals(b1, b2));

        pict = (Picture)slides[3].getShapes()[0]; //the forth slide contains PICT
        pdata = pict.getPictureData();
        assertTrue(pdata instanceof PICT);
        assertEquals(Picture.PICT, pdata.getType());
        src_bytes = pdata.getData();
        ppt_bytes = read(new File(cwd, "cow.pict"));
        assertEquals(src_bytes.length, ppt_bytes.length);
        //ignore the first 512 bytes - it is a MAC specific crap
        b1 = new byte[src_bytes.length-512];
        System.arraycopy(src_bytes, 512, b1, 0, b1.length);
        b2 = new byte[ppt_bytes.length-512];
        System.arraycopy(ppt_bytes, 512, b2, 0, b2.length);
        assertTrue(Arrays.equals(b1, b2));

        pict = (Picture)slides[4].getShapes()[0]; //the fifth slide contains EMF
        pdata = pict.getPictureData();
        assertTrue(pdata instanceof EMF);
        assertEquals(Picture.EMF, pdata.getType());
        src_bytes = pdata.getData();
        ppt_bytes = read(new File(cwd, "wrench.emf"));
        assertTrue(Arrays.equals(src_bytes, ppt_bytes));

    }

	/**
	 * Test that on a party corrupt powerpoint document, which has 
	 *  crazy pictures of type 0, we do our best.
	 */
	public void testZeroPictureType() throws Exception {
		HSLFSlideShow hslf = new HSLFSlideShow(new File(cwd, "PictureTypeZero.ppt").getPath());

		// Should still have 2 real pictures
		assertEquals(2, hslf.getPictures().length);
		// Both are real pictures, both WMF
		assertEquals(Picture.WMF, hslf.getPictures()[0].getType());
		assertEquals(Picture.WMF, hslf.getPictures()[1].getType());

		// Now test what happens when we use the SlideShow interface
		SlideShow ppt = new SlideShow(hslf);
        Slide[] slides = ppt.getSlides();
        PictureData[] pictures = ppt.getPictureData();
        assertEquals(12, slides.length);
        assertEquals(2, pictures.length);
        
		Picture pict;
		PictureData pdata;
		
        pict = (Picture)slides[0].getShapes()[1]; // 2nd object on 1st slide
        pdata = pict.getPictureData();
        assertTrue(pdata instanceof WMF);
        assertEquals(Picture.WMF, pdata.getType());
		
        pict = (Picture)slides[0].getShapes()[2]; // 3rd object on 1st slide
        pdata = pict.getPictureData();
        assertTrue(pdata instanceof WMF);
        assertEquals(Picture.WMF, pdata.getType());
	}
	
	public void testZeroPictureLength() throws Exception {
		HSLFSlideShow hslf = new HSLFSlideShow(new File(cwd, "PictureLengthZero.ppt").getPath());

		// Should still have 2 real pictures
		assertEquals(2, hslf.getPictures().length);
		// Both are real pictures, both WMF
		assertEquals(Picture.WMF, hslf.getPictures()[0].getType());
		assertEquals(Picture.WMF, hslf.getPictures()[1].getType());
		
		// Now test what happens when we use the SlideShow interface
		SlideShow ppt = new SlideShow(hslf);
        Slide[] slides = ppt.getSlides();
        PictureData[] pictures = ppt.getPictureData();
        assertEquals(27, slides.length);
        assertEquals(2, pictures.length);
        
		Picture pict;
		PictureData pdata;
		
        pict = (Picture)slides[6].getShapes()[13];
        pdata = pict.getPictureData();
        assertTrue(pdata instanceof WMF);
        assertEquals(Picture.WMF, pdata.getType());
		
        pict = (Picture)slides[7].getShapes()[13];
        pdata = pict.getPictureData();
        assertTrue(pdata instanceof WMF);
        assertEquals(Picture.WMF, pdata.getType());
	}
}