trunk/src/scratchpad/testcases/org/apache/poi/hslf/usermodel/TestPictures.java

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   this work for additional information regarding copyright ownership.
   The ASF licenses this file to You under the Apache License, Version 2.0
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package org.apache.poi.hslf.usermodel;

import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import java.awt.Dimension;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.net.URL;
import java.util.List;

import org.apache.poi.POIDataSamples;
import org.apache.poi.hslf.blip.DIB;
import org.apache.poi.hslf.blip.EMF;
import org.apache.poi.hslf.blip.JPEG;
import org.apache.poi.hslf.blip.PICT;
import org.apache.poi.hslf.blip.PNG;
import org.apache.poi.hslf.blip.WMF;
import org.apache.poi.sl.image.ImageHeaderEMF;
import org.apache.poi.sl.image.ImageHeaderPICT;
import org.apache.poi.sl.image.ImageHeaderWMF;
import org.apache.poi.sl.usermodel.PictureData.PictureType;
import org.apache.poi.util.Units;
import org.junit.Ignore;
import org.junit.Test;

/**
 * Test adding/reading pictures
 *
 * @author Yegor Kozlov
 */
public final class TestPictures {
    private static POIDataSamples slTests = POIDataSamples.getSlideShowInstance();

    /**
     * Test read/write Macintosh PICT
     */
    @Test
    public void testPICT() throws IOException {
        HSLFSlideShow ppt = new HSLFSlideShow();

        HSLFSlide slide = ppt.createSlide();
        byte[] src_bytes = slTests.readFile("cow.pict");
        HSLFPictureData data = ppt.addPicture(src_bytes, PictureType.PICT);
        ImageHeaderPICT nHeader = new ImageHeaderPICT(src_bytes, 512);
        final int expWidth = 197, expHeight = 137;
        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(1, pictures.size());
        assertEquals(PictureType.PICT, pd.getType());
        assertTrue(pd instanceof PICT);
        //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 PICT the first 512 bytes are MAC specific and may not be preserved, ignore them
        byte[] b1 = new byte[src_bytes.length-512];
        System.arraycopy(src_bytes, 512, b1, 0, b1.length);
        byte[] b2 = new byte[ppt_bytes.length-512];
        System.arraycopy(ppt_bytes, 512, b2, 0, b2.length);
        assertArrayEquals(b1, b2);
    }

    /**
     * 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);
    }

    /**
     * Test read/write EMF
     */
    @Test
    public void testEMF() throws IOException {
        HSLFSlideShow ppt = new HSLFSlideShow();

        HSLFSlide slide = ppt.createSlide();
        byte[] src_bytes = slTests.readFile("wrench.emf");
        HSLFPictureData data = ppt.addPicture(src_bytes, PictureType.EMF);
        ImageHeaderEMF nHeader = new ImageHeaderEMF(src_bytes, 0);
        final int expWidth = 190, expHeight = 115;
        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 get 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(1, pictures.size());
        assertEquals(PictureType.EMF, pd.getType());
        assertTrue(pd instanceof EMF);
        //compare the content of the initial file with what is stored in the PictureData
        byte[] ppt_bytes = pd.getData();
        assertArrayEquals(src_bytes, ppt_bytes);
    }

    /**
     * Test read/write PNG
     */
    @Test
    public void testPNG() throws IOException {
        HSLFSlideShow ppt = new HSLFSlideShow();

        HSLFSlide slide = ppt.createSlide();
        byte[] src_bytes = slTests.readFile("tomcat.png");
        HSLFPictureData data = ppt.addPicture(src_bytes, PictureType.PNG);
        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();
        //the Picture shape refers to the PictureData object in the Presentation
        assertEquals(pict.getPictureData(), pictures.get(0));

        assertEquals(1, pictures.size());
        assertEquals(PictureType.PNG, pictures.get(0).getType());
        assertTrue(pictures.get(0) instanceof PNG);
        //compare the content of the initial file with what is stored in the PictureData
        byte[] ppt_bytes = pictures.get(0).getData();
        assertArrayEquals(src_bytes, ppt_bytes);
    }

    /**
     * Test read/write JPEG
     */
    @Test
    public void testJPEG() throws IOException {
        HSLFSlideShow ppt = new HSLFSlideShow();

        HSLFSlide slide = ppt.createSlide();
        byte[] src_bytes = slTests.readFile("clock.jpg");
        HSLFPictureData data = ppt.addPicture(src_bytes, PictureType.JPEG);

        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();
        //the Picture shape refers to the PictureData object in the Presentation
        assertEquals(pict.getPictureData(), pictures.get(0));

        assertEquals(1, pictures.size());
        assertEquals(PictureType.JPEG, pictures.get(0).getType());
        assertTrue(pictures.get(0) instanceof JPEG);
        //compare the content of the initial file with what is stored in the PictureData
        byte[] ppt_bytes = pictures.get(0).getData();
        assertArrayEquals(src_bytes, ppt_bytes);
    }

    /**
     * Test read/write DIB
     */
    @Test
    public void testDIB() throws IOException {
        HSLFSlideShow ppt = new HSLFSlideShow();

        HSLFSlide slide = ppt.createSlide();
        byte[] src_bytes = slTests.readFile("clock.dib");
        HSLFPictureData data = ppt.addPicture(src_bytes, PictureType.DIB);
        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();
        //the Picture shape refers to the PictureData object in the Presentation
        assertEquals(pict.getPictureData(), pictures.get(0));

        assertEquals(1, pictures.size());
        assertEquals(PictureType.DIB, pictures.get(0).getType());
        assertTrue(pictures.get(0) instanceof DIB);
        //compare the content of the initial file with what is stored in the PictureData
        byte[] ppt_bytes = pictures.get(0).getData();
        assertArrayEquals(src_bytes, ppt_bytes);
    }

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

        byte[] src_bytes, ppt_bytes, b1, b2;
        HSLFPictureShape pict;
        HSLFPictureData pdata;

        HSLFSlideShow ppt = new HSLFSlideShow(slTests.openResourceAsStream("pictures.ppt"));
        List<HSLFSlide> slides = ppt.getSlides();
        List<HSLFPictureData> pictures = ppt.getPictureData();
        assertEquals(5, pictures.size());

        pict = (HSLFPictureShape)slides.get(0).getShapes().get(0); //the first slide contains JPEG
        pdata = pict.getPictureData();
        assertTrue(pdata instanceof JPEG);
        assertEquals(PictureType.JPEG, pdata.getType());
        src_bytes = pdata.getData();
        ppt_bytes = slTests.readFile("clock.jpg");
        assertArrayEquals(src_bytes, ppt_bytes);

        pict = (HSLFPictureShape)slides.get(1).getShapes().get(0); //the second slide contains PNG
        pdata = pict.getPictureData();
        assertTrue(pdata instanceof PNG);
        assertEquals(PictureType.PNG, pdata.getType());
        src_bytes = pdata.getData();
        ppt_bytes = slTests.readFile("tomcat.png");
        assertArrayEquals(src_bytes, ppt_bytes);

        pict = (HSLFPictureShape)slides.get(2).getShapes().get(0); //the third slide contains WMF
        pdata = pict.getPictureData();
        assertTrue(pdata instanceof WMF);
        assertEquals(PictureType.WMF, pdata.getType());
        src_bytes = pdata.getData();
        ppt_bytes = slTests.readFile("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);
        assertArrayEquals(b1, b2);

        pict = (HSLFPictureShape)slides.get(3).getShapes().get(0); //the forth slide contains PICT
        pdata = pict.getPictureData();
        assertTrue(pdata instanceof PICT);
        assertEquals(PictureType.PICT, pdata.getType());
        src_bytes = pdata.getData();
        ppt_bytes = slTests.readFile("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);
        assertArrayEquals(b1, b2);

        pict = (HSLFPictureShape)slides.get(4).getShapes().get(0); //the fifth slide contains EMF
        pdata = pict.getPictureData();
        assertTrue(pdata instanceof EMF);
        assertEquals(PictureType.EMF, pdata.getType());
        src_bytes = pdata.getData();
        ppt_bytes = slTests.readFile("wrench.emf");
        assertArrayEquals(src_bytes, ppt_bytes);

        ppt.close();
    }

	/**
	 * Test that on a party corrupt powerpoint document, which has
	 *  crazy pictures of type 0, we do our best.
	 */
    @Test
	public void testZeroPictureType() throws IOException {
		HSLFSlideShowImpl hslf = new HSLFSlideShowImpl(slTests.openResourceAsStream("PictureTypeZero.ppt"));

		// Should still have 2 real pictures
		assertEquals(2, hslf.getPictureData().size());
		// Both are real pictures, both WMF
		assertEquals(PictureType.WMF, hslf.getPictureData().get(0).getType());
		assertEquals(PictureType.WMF, hslf.getPictureData().get(1).getType());

		// Now test what happens when we use the SlideShow interface
		HSLFSlideShow ppt = new HSLFSlideShow(hslf);
        List<HSLFSlide> slides = ppt.getSlides();
        List<HSLFPictureData> pictures = ppt.getPictureData();
        assertEquals(12, slides.size());
        assertEquals(2, pictures.size());

		HSLFPictureShape pict;
		HSLFPictureData pdata;

        pict = (HSLFPictureShape)slides.get(0).getShapes().get(1); // 2nd object on 1st slide
        pdata = pict.getPictureData();
        assertTrue(pdata instanceof WMF);
        assertEquals(PictureType.WMF, pdata.getType());

        pict = (HSLFPictureShape)slides.get(0).getShapes().get(2); // 3rd object on 1st slide
        pdata = pict.getPictureData();
        assertTrue(pdata instanceof WMF);
        assertEquals(PictureType.WMF, pdata.getType());
        
        ppt.close();
	}

    /**
     * YK: The test is disabled because the owner asked to delete the test file from POI svn.
     * See "Please remove my file from your svn" on @poi-dev from Dec 12, 2013
     */
    @Test
    @Ignore
	public void testZeroPictureLength() throws IOException {
        // take the data from www instead of test directory
        URL url = new URL("http://www.cs.sfu.ca/~anoop/courses/CMPT-882-Fall-2002/chris.ppt");
		HSLFSlideShowImpl hslf = new HSLFSlideShowImpl(url.openStream());

		// Should still have 2 real pictures
		assertEquals(2, hslf.getPictureData().size());
		// Both are real pictures, both WMF
		assertEquals(PictureType.WMF, hslf.getPictureData().get(0).getType());
		assertEquals(PictureType.WMF, hslf.getPictureData().get(1).getType());

		// Now test what happens when we use the SlideShow interface
		HSLFSlideShow ppt = new HSLFSlideShow(hslf);
        List<HSLFSlide> slides = ppt.getSlides();
        List<HSLFPictureData> pictures = ppt.getPictureData();
        assertEquals(27, slides.size());
        assertEquals(2, pictures.size());

		HSLFPictureShape pict;
		HSLFPictureData pdata;

        pict = (HSLFPictureShape)slides.get(6).getShapes().get(13);
        pdata = pict.getPictureData();
        assertTrue(pdata instanceof WMF);
        assertEquals(PictureType.WMF, pdata.getType());

        pict = (HSLFPictureShape)slides.get(7).getShapes().get(13);
        pdata = pict.getPictureData();
        assertTrue(pdata instanceof WMF);
        assertEquals(PictureType.WMF, pdata.getType());

        //add a new picture, it should be correctly appended to the Pictures stream
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        for(HSLFPictureData p : pictures) p.write(out);
        out.close();

        int streamSize = out.size();

        HSLFPictureData data = HSLFPictureData.create(PictureType.JPEG);
        data.setData(new byte[100]);
        int offset = hslf.addPicture(data);
        assertEquals(streamSize, offset);
        assertEquals(3, ppt.getPictureData().size());

        ppt.close();
    }

    @Test
    public void testGetPictureName() throws IOException {
        HSLFSlideShow ppt = new HSLFSlideShow(slTests.openResourceAsStream("ppt_with_png.ppt"));
        HSLFSlide slide = ppt.getSlides().get(0);

        HSLFPictureShape p = (HSLFPictureShape)slide.getShapes().get(0); //the first slide contains JPEG
        assertEquals("test", p.getPictureName());
        ppt.close();
    }

    @Test
    public void testSetPictureName() throws IOException {
        HSLFSlideShow ppt = new HSLFSlideShow();

        HSLFSlide slide = ppt.createSlide();
        byte[] img = slTests.readFile("tomcat.png");
        HSLFPictureData data = ppt.addPicture(img, PictureType.PNG);
        HSLFPictureShape pict = new HSLFPictureShape(data);
        pict.setPictureName("tomcat.png");
        slide.addShape(pict);

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

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

        HSLFPictureShape p = (HSLFPictureShape)ppt.getSlides().get(0).getShapes().get(0);
        assertEquals("tomcat.png", p.getPictureName());
    }
}