poi/src/scratchpad/testcases/org/apache/poi/hslf/model/TestPicture.java

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   this work for additional information regarding copyright ownership.
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package org.apache.poi.hslf.model;

import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import javax.imageio.ImageIO;

import junit.framework.TestCase;

import org.apache.poi.ddf.EscherBSERecord;
import org.apache.poi.hslf.HSLFSlideShow;
import org.apache.poi.hslf.usermodel.PictureData;
import org.apache.poi.hslf.usermodel.SlideShow;
import org.apache.poi.POIDataSamples;

/**
 * Test Picture shape.
 *
 * @author Yegor Kozlov
 */
public final class TestPicture extends TestCase {
    private static POIDataSamples _slTests = POIDataSamples.getSlideShowInstance();

    /**
     * Test that the reference count of a blip is incremented every time the picture is inserted.
     * This is important when the same image appears multiple times in a slide show.
     *
     */
    public void testMultiplePictures() throws Exception {
        SlideShow ppt = new SlideShow();

        Slide s = ppt.createSlide();
        Slide s2 = ppt.createSlide();
        Slide s3 = ppt.createSlide();

        int idx = ppt.addPicture(_slTests.readFile("clock.jpg"), Picture.JPEG);
        Picture pict = new Picture(idx);
        Picture pict2 = new Picture(idx);
        Picture pict3 = new Picture(idx);

        pict.setAnchor(new Rectangle(10,10,100,100));
        s.addShape(pict);
        EscherBSERecord bse1 = pict.getEscherBSERecord();
        assertEquals(1, bse1.getRef());

        pict2.setAnchor(new Rectangle(10,10,100,100));
        s2.addShape(pict2);
        EscherBSERecord bse2 = pict.getEscherBSERecord();
        assertSame(bse1, bse2);
        assertEquals(2, bse1.getRef());

        pict3.setAnchor(new Rectangle(10,10,100,100));
        s3.addShape(pict3);
        EscherBSERecord bse3 = pict.getEscherBSERecord();
        assertSame(bse2, bse3);
        assertEquals(3, bse1.getRef());
    }

    /**
     * Picture#getEscherBSERecord threw NullPointerException if EscherContainerRecord.BSTORE_CONTAINER
     * was not found. The correct behaviour is to return null.
     */
    public void test46122() {
        SlideShow ppt = new SlideShow();
        Slide slide = ppt.createSlide();

        Picture pict = new Picture(-1); //index to non-existing picture data
        pict.setSheet(slide);
        PictureData data = pict.getPictureData();
        assertNull(data);

        BufferedImage img = new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB);
        Graphics2D graphics = img.createGraphics();
        pict.draw(graphics);
    }

    public void testMacImages() throws Exception {
        HSLFSlideShow hss = new HSLFSlideShow(_slTests.openResourceAsStream("53446.ppt"));

        PictureData[] pictures = hss.getPictures();
        assertEquals(15, pictures.length);

        int[][] expectedSizes = {
                null,           // WMF
                { 427, 428 },   // PNG
                { 371, 370 },   // PNG
                { 288, 183 },   // PNG
                { 285, 97 },    // PNG
                { 288, 168 },   // PNG
                null,           // WMF
                null,           // WMF
                { 199, 259 },   // PNG
                { 432, 244 },   // PNG
                { 261, 258 },   // PNG
                null,           // WMF
                null,           // WMF
                null,           // WMF
                null            // EMF
        };

        for (int i = 0; i < pictures.length; i++) {
            BufferedImage image = ImageIO.read(new ByteArrayInputStream(pictures[i].getData()));

            if (pictures[i].getType() != Picture.WMF && pictures[i].getType() != Picture.EMF) {
                assertNotNull(image);

                int[] dimensions = expectedSizes[i];
                assertEquals(dimensions[0], image.getWidth());
                assertEquals(dimensions[1], image.getHeight());
            }
        }
    }
}