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Bug 54541 - Add support for cropped images in Slide.draw() 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1648335 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Andreas Beeker 2014-12-29 13:35:57 +00:00
parent 4586328c95
commit f27ced46fb
5 changed files with 159 additions and 42 deletions
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34
src/scratchpad/src/org/apache/poi/hslf/blip/BitmapPainter.java
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@ -22,6 +22,9 @@ import org.apache.poi.hslf.model.Picture;
import org.apache.poi.util.POILogger;
import org.apache.poi.util.POILogFactory;
/* ====================================================================
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
@ -39,7 +42,9 @@ import org.apache.poi.util.POILogFactory;
limitations under the License.
==================================================================== */
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
@ -54,15 +59,36 @@ public final class BitmapPainter implements ImagePainter {
public void paint(Graphics2D graphics, PictureData pict, Picture parent) {
BufferedImage img;
try {
img = ImageIO.read(new ByteArrayInputStream(pict.getData()));
}
catch (Exception e){
img = ImageIO.read(new ByteArrayInputStream(pict.getData()));
} catch (Exception e) {
logger.log(POILogger.WARN, "ImageIO failed to create image. image.type: " + pict.getType());
return;
}
boolean isClipped = true;
Insets clip = parent.getBlipClip();
if (clip == null) {
isClipped = false;
clip = new Insets(0,0,0,0);
}
int iw = img.getWidth();
int ih = img.getHeight();
Rectangle anchor = parent.getLogicalAnchor2D().getBounds();
graphics.drawImage(img, anchor.x, anchor.y, anchor.width, anchor.height, null);
double cw = (100000-clip.left-clip.right) / 100000.0;
double ch = (100000-clip.top-clip.bottom) / 100000.0;
double sx = anchor.getWidth()/(iw*cw);
double sy = anchor.getHeight()/(ih*ch);
double tx = anchor.getX()-(iw*sx*clip.left/100000.0);
double ty = anchor.getY()-(ih*sy*clip.top/100000.0);
AffineTransform at = new AffineTransform(sx, 0, 0, sy, tx, ty) ;
Shape clipOld = graphics.getClip();
if (isClipped) graphics.clip(anchor.getBounds2D());
graphics.drawRenderedImage(img, at);
graphics.setClip(clipOld);
}
}

39
src/scratchpad/src/org/apache/poi/hslf/model/Picture.java
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@ -18,6 +18,7 @@
package org.apache.poi.hslf.model;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
@ -264,4 +265,40 @@ public class Picture extends SimpleShape {
graphics.setTransform(at);
}
}
/**
* Returns the clipping values as percent ratio relatively to the image size.
* The anchor specified by {@link #getLogicalAnchor2D()} is the displayed size,
* i.e. the size of the already clipped image
*
* @return the clipping as insets converted/scaled to 100000 (=100%)
*/
public Insets getBlipClip() {
EscherOptRecord opt = getEscherOptRecord();
double top = getFractProp(opt, EscherProperties.BLIP__CROPFROMTOP);
double bottom = getFractProp(opt, EscherProperties.BLIP__CROPFROMBOTTOM);
double left = getFractProp(opt, EscherProperties.BLIP__CROPFROMLEFT);
double right = getFractProp(opt, EscherProperties.BLIP__CROPFROMRIGHT);
// if all crop values are zero (the default) then no crop rectangle is set, return null
return (top==0 && bottom==0 && left==0 && right==0)
? null
: new Insets((int)(top*100000), (int)(left*100000), (int)(bottom*100000), (int)(right*100000));
}
/**
* @return the fractional property or 0 if not defined
*
* @see <a href="http://msdn.microsoft.com/en-us/library/dd910765(v=office.12).aspx">2.2.1.6 FixedPoint</a>
*/
private static double getFractProp(EscherOptRecord opt, short propertyId) {
EscherSimpleProperty prop = (EscherSimpleProperty)getEscherProperty(opt, propertyId);
if (prop == null) return 0;
int fixedPoint = prop.getPropertyValue();
int i = (fixedPoint >> 16);
int f = (fixedPoint >> 0) & 0xFFFF;
double fp = i + f/65536.0;
return fp;
}
}

56
src/scratchpad/testcases/org/apache/poi/hslf/model/AllHSLFModelTests.java
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@ -17,39 +17,35 @@
package org.apache.poi.hslf.model;
import junit.framework.Test;
import junit.framework.TestSuite;
import org.junit.runner.RunWith;
import org.junit.runners.Suite;
/**
* Collects all tests from the package <tt>org.apache.poi.hslf.model</tt>.
*
* @author Josh Micich
*/
@RunWith(Suite.class)
@Suite.SuiteClasses({
TestBackground.class,
TestFreeform.class,
TestHeadersFooters.class,
TestHyperlink.class,
TestImagePainter.class,
TestLine.class,
TestMovieShape.class,
TestOleEmbedding.class,
TestPPFont.class,
TestPPGraphics2D.class,
TestPicture.class,
TestSetBoldItalic.class,
TestShapes.class,
TestSheet.class,
TestSlideChangeNotes.class,
TestSlideMaster.class,
TestSlides.class,
TestTable.class,
TestTextRun.class,
TestTextRunReWrite.class,
TestTextShape.class
})
public class AllHSLFModelTests {
public static Test suite() {
TestSuite result = new TestSuite(AllHSLFModelTests.class.getName());
result.addTestSuite(TestBackground.class);
result.addTestSuite(TestFreeform.class);
result.addTestSuite(TestHeadersFooters.class);
result.addTestSuite(TestHyperlink.class);
result.addTestSuite(TestImagePainter.class);
result.addTestSuite(TestLine.class);
result.addTestSuite(TestMovieShape.class);
result.addTestSuite(TestOleEmbedding.class);
result.addTestSuite(TestPPFont.class);
result.addTestSuite(TestPPGraphics2D.class);
result.addTestSuite(TestPicture.class);
result.addTestSuite(TestSetBoldItalic.class);
result.addTestSuite(TestShapes.class);
result.addTestSuite(TestSheet.class);
result.addTestSuite(TestSlideChangeNotes.class);
result.addTestSuite(TestSlideMaster.class);
result.addTestSuite(TestSlides.class);
result.addTestSuite(TestTable.class);
result.addTestSuite(TestTextRun.class);
result.addTestSuite(TestTextRunReWrite.class);
result.addTestSuite(TestTextShape.class);
return result;
}
}

72
src/scratchpad/testcases/org/apache/poi/hslf/model/TestPicture.java
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@ -17,26 +17,38 @@
package org.apache.poi.hslf.model;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import javax.imageio.ImageIO;
import junit.framework.TestCase;
import org.apache.poi.POIDataSamples;
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;
import org.apache.poi.util.JvmBugs;
import org.junit.Ignore;
import org.junit.Test;
/**
* Test Picture shape.
*
* @author Yegor Kozlov
*/
public final class TestPicture extends TestCase {
public final class TestPicture {
private static POIDataSamples _slTests = POIDataSamples.getSlideShowInstance();
/**
@ -44,7 +56,8 @@ public final class TestPicture extends TestCase {
* This is important when the same image appears multiple times in a slide show.
*
*/
public void testMultiplePictures() throws Exception {
@Test
public void multiplePictures() throws Exception {
SlideShow ppt = new SlideShow();
Slide s = ppt.createSlide();
@ -78,7 +91,8 @@ public final class TestPicture extends TestCase {
* Picture#getEscherBSERecord threw NullPointerException if EscherContainerRecord.BSTORE_CONTAINER
* was not found. The correct behaviour is to return null.
*/
public void test46122() {
@Test
public void bug46122() {
SlideShow ppt = new SlideShow();
Slide slide = ppt.createSlide();
@ -92,7 +106,8 @@ public final class TestPicture extends TestCase {
pict.draw(graphics);
}
public void testMacImages() throws Exception {
@Test
public void macImages() throws Exception {
HSLFSlideShow hss = new HSLFSlideShow(_slTests.openResourceAsStream("53446.ppt"));
PictureData[] pictures = hss.getPictures();
@ -128,4 +143,47 @@ public final class TestPicture extends TestCase {
}
}
}
@Test
@Ignore("Just for visual validation - antialiasing is different on various systems")
public void bug54541() throws Exception {
// InputStream xis = _slTests.openResourceAsStream("54542_cropped_bitmap.pptx");
// XMLSlideShow xss = new XMLSlideShow(xis);
// xis.close();
//
// Dimension xpg = xss.getPageSize();
// for(XSLFSlide slide : xss.getSlides()) {
// BufferedImage img = new BufferedImage(xpg.width, xpg.height, BufferedImage.TYPE_INT_RGB);
// Graphics2D graphics = img.createGraphics();
// fixFonts(graphics);
// slide.draw(graphics);
// ImageIO.write(img, "PNG", new File("testx.png"));
// }
//
// System.out.println("########################");
InputStream is = _slTests.openResourceAsStream("54541_cropped_bitmap.ppt");
SlideShow ss = new SlideShow(is);
is.close();
Dimension pg = ss.getPageSize();
int i=1;
for(Slide slide : ss.getSlides()) {
BufferedImage img = new BufferedImage(pg.width, pg.height, BufferedImage.TYPE_INT_RGB);
Graphics2D graphics = img.createGraphics();
fixFonts(graphics);
slide.draw(graphics);
ImageIO.write(img, "PNG", new File("test"+(i++)+".png"));
}
}
@SuppressWarnings("unchecked")
private void fixFonts(Graphics2D graphics) {
if (!JvmBugs.hasLineBreakMeasurerBug()) return;
Map<String,String> fontMap = (Map<String,String>)graphics.getRenderingHint(TextPainter.KEY_FONTMAP);
if (fontMap == null) fontMap = new HashMap<String,String>();
fontMap.put("Calibri", "Lucida Sans");
fontMap.put("Cambria", "Lucida Bright");
graphics.setRenderingHint(TextPainter.KEY_FONTMAP, fontMap);
}
}

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test-data/slideshow/54541_cropped_bitmap.ppt Normal file
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