poi/src/ooxml/testcases/org/apache/poi/sl/draw/TestDrawPictureShape.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
 *    (the "License"); you may not use this file except in compliance with
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 *        http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.poi.sl.draw;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;

import java.awt.Dimension;
import java.awt.geom.Rectangle2D;

import org.apache.poi.POIDataSamples;
import org.apache.poi.sl.usermodel.PictureData;
import org.apache.poi.sl.usermodel.PictureShape;
import org.apache.poi.sl.usermodel.RectAlign;
import org.apache.poi.sl.usermodel.Shape;
import org.apache.poi.sl.usermodel.Slide;
import org.apache.poi.sl.usermodel.SlideShow;
import org.apache.poi.sl.usermodel.SlideShowFactory;
import org.apache.poi.util.Units;
import org.junit.Test;

public class TestDrawPictureShape {
    final static POIDataSamples ssSamples = POIDataSamples.getSlideShowInstance();

    @Test
    public void testResize() throws Exception {
        String files[] = { "pictures.ppt", "shapes.pptx" };
        for (String file : files) {
            SlideShow<?,?> ss = SlideShowFactory.create(ssSamples.getFile(file));
            Slide<?,?> slide = ss.getSlides().get(0);
            PictureShape<?,?> picShape = null;
            for (Shape<?,?> shape : slide.getShapes()) {
                if (shape instanceof PictureShape) {
                    picShape = (PictureShape<?,?>)shape;
                    break;
                }
            }
            assertNotNull(picShape);
            PictureData pd = picShape.getPictureData();
            Dimension dimPd = pd.getImageDimension();
            new DrawPictureShape(picShape).resize();
            Dimension dimShape = new Dimension(
                (int)picShape.getAnchor().getWidth(),
                (int)picShape.getAnchor().getHeight()
            );
            assertEquals(dimPd, dimShape);
            
            double newWidth = (dimPd.getWidth()*(100d/dimPd.getHeight()));
            // ... -1 is a rounding error
            Rectangle2D expRect = new Rectangle2D.Double(rbf(50+300-newWidth, picShape), 50, rbf(newWidth, picShape), 100);
            Rectangle2D target = new Rectangle2D.Double(50,50,300,100);
            new DrawPictureShape(picShape).resize(target, RectAlign.BOTTOM_RIGHT);
            Rectangle2D actRect = picShape.getAnchor();
            assertEquals(expRect.getX(), actRect.getX(), .0001);
            assertEquals(expRect.getY(), actRect.getY(), .0001);
            assertEquals(expRect.getWidth(), actRect.getWidth(), .0001);
            assertEquals(expRect.getHeight(), actRect.getHeight(), .0001);
            ss.close();
        }
    }
    
    // round back and forth - points -> master -> points
    static double rbf(double val, PictureShape<?,?> picShape) {
        if (picShape.getClass().getName().contains("HSLF")) {
            return Units.masterToPoints(Units.pointsToMaster(val));
        } else {
            return val;
        }
    }
}