コメントで述べたように、EMFは、箱から出してサポートされていません...とFreeHepとして、それは我々がする可能性は低いですLGPL licenseを持っていることにしましたinclude in our release。 setRenderingHint(Drawable.IMAGE_RENDERER, new MyImageRendener())
経由Graphics2DコンテキストのごImageRenderer実装を実装し、登録
(この例を見て
、現在のPOIのImageRendererハンドリングが見えない柔軟性、代わりにグローバルハンドラを持つ、...をコンテンツタイプごとのハンドラを登録した方がよいかもしれません)
usual POI componentのほかに、freehep-graphics2d,freehep-graphicsbase,freehep-graphicsio,freehep-graphicsio-emfおよびfreehep-io。
の例では、これまで完成されてからですが、私はあなたが、少なくともキックスタートを切る推測:ApacheのPOIの最新バージョンへ
package org.apache.poi.xslf;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.RenderingHints;
import java.awt.geom.AffineTransform;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import javax.imageio.ImageIO;
import org.apache.poi.sl.draw.DrawFactory;
import org.apache.poi.sl.draw.DrawPictureShape;
import org.apache.poi.sl.draw.Drawable;
import org.apache.poi.sl.draw.ImageRenderer;
import org.apache.poi.sl.usermodel.PictureData;
import org.apache.poi.sl.usermodel.PictureData.PictureType;
import org.apache.poi.sl.usermodel.PictureShape;
import org.apache.poi.util.POILogFactory;
import org.apache.poi.util.POILogger;
import org.apache.poi.xslf.usermodel.XMLSlideShow;
import org.apache.poi.xslf.usermodel.XSLFPictureShape;
import org.apache.poi.xslf.usermodel.XSLFSlide;
import org.freehep.graphicsio.emf.EMFInputStream;
import org.freehep.graphicsio.emf.EMFRenderer;
import org.junit.Test;
public class TestEMFRender {
private final static POILogger LOG = POILogFactory.getLogger(TestEMFRender.class);
@Test
public void render() throws Exception {
XMLSlideShow ppt = getDummy();
Dimension pgsize = ppt.getPageSize();
BufferedImage img = new BufferedImage((int)pgsize.getWidth(), (int)pgsize.getHeight(), BufferedImage.TYPE_INT_ARGB);
Graphics2D graphics = initGraphicsCtx(img);
// draw stuff
ppt.getSlides().get(0).draw(graphics);
// save the result
File outfile = new File("bla.png");
ImageIO.write(img, "PNG", outfile);
// cleanup
graphics.dispose();
img.flush();
ppt.close();
}
static XMLSlideShow getDummy() throws IOException {
XMLSlideShow ppt = new XMLSlideShow();
FileInputStream fis = new FileInputStream("kiwilogo.emf");
PictureData pd = ppt.addPicture(fis, PictureType.EMF);
fis.close();
XSLFSlide sl = ppt.createSlide();
XSLFPictureShape ps = sl.createPicture(pd);
ps.setAnchor(new Rectangle2D.Double(100, 100, 100, 100));
return ppt;
}
static Graphics2D initGraphicsCtx(BufferedImage img) {
Graphics2D graphics = img.createGraphics();
// default rendering options
graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
graphics.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
graphics.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
graphics.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
// custom draw factory
DrawFactory df = new DrawFactory(){
public DrawPictureShape getDrawable(PictureShape<?,?> shape) {
return new DrawPictureShapeEmf(shape);
}
};
graphics.setRenderingHint(Drawable.DRAW_FACTORY, df);
df.fixFonts(graphics);
return graphics;
}
static class DrawPictureShapeEmf extends DrawPictureShape {
public DrawPictureShapeEmf(PictureShape<?,?> shape) {
super(shape);
}
@Override
public void drawContent(Graphics2D graphics) {
PictureData data = getShape().getPictureData();
if(data == null) return;
Rectangle2D anchor = getAnchor(graphics, getShape());
Insets insets = getShape().getClipping();
try {
String contentType = data.getContentType();
ImageRenderer renderer =
PictureType.EMF.contentType.equals(contentType)
? new ImgRenderer()
: super.getImageRenderer(graphics, contentType);
renderer.loadImage(data.getData(), data.getContentType());
renderer.drawImage(graphics, anchor, insets);
} catch (IOException e) {
LOG.log(POILogger.ERROR, "image can't be loaded/rendered.", e);
}
}
}
static class ImgRenderer implements ImageRenderer {
EMFRenderer emfRenderer;
public void loadImage(InputStream data, String contentType) throws IOException {
emfRenderer = new EMFRenderer(new EMFInputStream(data));
}
public void loadImage(byte[] data, String contentType) throws IOException {
loadImage(new ByteArrayInputStream(data), contentType);
}
public Dimension getDimension() {
return emfRenderer.getSize();
}
public void setAlpha(double alpha) {
}
public BufferedImage getImage() {
return null;
}
public BufferedImage getImage(Dimension dim) {
return null;
}
public boolean drawImage(Graphics2D ctx, Rectangle2D graphicsBounds) {
return drawImage(ctx, graphicsBounds, null);
}
public boolean drawImage(Graphics2D ctx, Rectangle2D graphicsBounds, Insets clip) {
AffineTransform at = ctx.getTransform();
try {
Dimension emfDim = emfRenderer.getSize();
// scale output bounds to image bounds
ctx.translate(graphicsBounds.getX(), graphicsBounds.getY());
ctx.scale(graphicsBounds.getWidth()/emfDim.getWidth(), graphicsBounds.getHeight()/emfDim.getHeight());
// TODO: handle clipping
emfRenderer.paint(ctx);
return true;
} catch (RuntimeException e) {
// TODO: logging
return false;
} finally {
ctx.setTransform(at);
}
}
}
}
アップグレードして、再試行してください? – Gagravarr
私はそれをしましたが、この機能をサポートしていないと思われます。 – tralalaUlalal
EMFは現在、アウトオブボックスでサポートされていません。 FreeHepライブラリの助けを借りて、独自のImageRendererを提供する必要があります。 [FreeHepの使用例]を参照してください(http://apache-poi.1045710.n5.nabble.com/ImageRender-for-EMF-convert-PPTX-slides-include-EMF-images-into- PNG-td5717773.html)と[自分のImageRendererの提供方法](http://svn.apache.org/viewvc/poi/trunk/src/java/org/apache/poi/sl/draw/ImageRenderer.java ?view = markup) 私はかもしれません:)すぐに詳細な回答を考えてみてください – kiwiwings