org.apache.poi.xslf.usermodel.XSLFShape Java Examples

/**
 * Handles shape modification
 * @return true is the shape should be removed
 */
private static boolean processShape(XSLFShape shape, List<ImageToReplace> imagesToReplace, XMLSlideShow ppt, PptMapper mapper) {
	if(shape instanceof XSLFTextShape) {
		return processTextShape((XSLFTextShape) shape, mapper);
	}
	if(shape instanceof XSLFTable) {
		return processTableShape((XSLFTable) shape, mapper);
	}
	if(shape instanceof XSLFPictureShape) {
		return processImageShape((XSLFPictureShape) shape, imagesToReplace, mapper);
	}
	if(shape instanceof XSLFGroupShape) {
		return processGroupShape((XSLFGroupShape) shape, ppt, mapper);
	}

	return false;
}
 

@Override
public XSLFShape createShape(WriterContext writerContext, JSONObject shape) {
    if (!shape.containsKey("image"))
        return null;

    JSONObject image = shape.getJSONObject("image");
    try {
        InputStream inputStream = writerContext.getMediaReader().read(image);
        XSLFPictureData xslfPictureData = writerContext.getXmlSlideShow().addPicture(inputStream,
                getPictureType(image.getString("url"), image.getString("contentType")));
        inputStream.close();

        return writerContext.getXslfSlide().createPicture(xslfPictureData);
    } catch (Throwable throwable) {
        logger.warn(throwable, "获取图片资源[{}]时发生异常！", image);

        return null;
    }
}
 

private static void processShapesContainer(ShapeContainer<XSLFShape, ?> shapeContainer, XMLSlideShow ppt, PptMapper mapper) {
	List<ImageToReplace> imagesToReplace = new ArrayList<>();
	List<XSLFShape> shapesToDelete = new ArrayList<>();

	for(XSLFShape shape : shapeContainer.getShapes()) {
		if(processShape(shape, imagesToReplace, ppt, mapper)) {
			shapesToDelete.add(shape);
		}
	}

	for(XSLFShape shapeToDelete : shapesToDelete) {
		shapeContainer.removeShape(shapeToDelete);
	}

	for(ImageToReplace imageToReplace : imagesToReplace) {
		replaceImage(ppt, shapeContainer, imageToReplace);
	}
}
 

@Test
public void whenRetrievingThePlaceholdersForEachSlide_thenOK() throws Exception {
    XMLSlideShow xmlSlideShow = pph.readingExistingSlideShow(fileLocation);

    List<XSLFShape> onlyTitleSlidePlaceholders = pph.retrieveTemplatePlaceholders(xmlSlideShow.getSlides().get(0));
    List<XSLFShape> titleAndBodySlidePlaceholders = pph.retrieveTemplatePlaceholders(xmlSlideShow.getSlides().get(1));
    List<XSLFShape> emptySlidePlaceholdes = pph.retrieveTemplatePlaceholders(xmlSlideShow.getSlides().get(3));

    Assert.assertEquals(1, onlyTitleSlidePlaceholders.size());
    Assert.assertEquals(2, titleAndBodySlidePlaceholders.size());
    Assert.assertEquals(0, emptySlidePlaceholdes.size());

}
 

private void parseShapes(WriterContext writerContext, JSONArray shapes) {
    for (int i = 0, size = shapes.size(); i < size; i++) {
        JSONObject shape = shapes.getJSONObject(i);
        XSLFShape xslfShape = parser.createShape(writerContext, shape);
        if (xslfShape == null) {
            logger.warn(null, "无法处理PPTx形状[{}]！", shape);

            continue;
        }

        if (xslfShape instanceof XSLFSimpleShape)
            parser.parseShape(writerContext, (XSLFSimpleShape) xslfShape, shape);
    }
}
 

@Override
public XSLFShape createShape(WriterContext writerContext, JSONObject shape) {
    XSLFShape xslfShape;
    for (Simple simple : simples)
        if ((xslfShape = simple.createShape(writerContext, shape)) != null)
            return xslfShape;

    for (Graphic graphic : graphics)
        if ((xslfShape = graphic.createShape(writerContext, shape)) != null)
            return xslfShape;

    return null;
}
 

@Override
public XSLFShape createShape(WriterContext writerContext, JSONObject shape) {
    return null;
}
 

private static void replaceImage(XMLSlideShow ppt, ShapeContainer<XSLFShape, ?> shapeContainer, ImageToReplace imageToReplace) {
	byte[] newPictureResized = imageToReplace.imageMapper.getReplacementMode().resize(
		imageToReplace.imageMapper.getValue(),
		imageToReplace.imageMapper.getTargetFormat().name(),
		(int) imageToReplace.toReplace.getAnchor().getWidth(),
		(int) imageToReplace.toReplace.getAnchor().getHeight(),
		imageToReplace.getImageMapper().getQualityFactory(),
		imageToReplace.getImageMapper().getQualityMultiplicator()
	);
	if(newPictureResized == null) {
		// if an error occurred during the resizement of the image, the replacement cannot be processed
		return;
	}

	XSLFPictureData newPictureData = ppt.addPicture(newPictureResized, imageToReplace.imageMapper.getTargetFormat());
	Rectangle2D newImageAnchor = computeNewImageAnchor(
		imageToReplace.toReplace.getAnchor(),
		newPictureResized,
		imageToReplace.imageMapper.getReplacementMode(),
		imageToReplace.imageMapper.getQualityMultiplicator()
	);

	if(shapeContainer instanceof POIXMLDocumentPart) {
		replaceImageInPlace((POIXMLDocumentPart) shapeContainer, imageToReplace, newPictureData, newImageAnchor);
	}
	else if(shapeContainer instanceof XSLFGroupShape) {
		replaceImageInPlace(((XSLFGroupShape) shapeContainer).getSheet(), imageToReplace, newPictureData, newImageAnchor);
	}
	// If the container is not a POIXMLDocumentPart or a XSLFGroupShape,
	// the old image have to deleted along with its properties.
	// The new image will just be place in the same area of the old image.
	// This behavior is a fall back that should not append since
	// I don't think the image container can be something else
	// apart from POIXMLDocumentPart and XSLFGroupShape.
	else {
		XSLFPictureShape newPictureShape = (XSLFPictureShape) shapeContainer.createPicture(newPictureData);
		newPictureShape.setAnchor(newImageAnchor);

		shapeContainer.removeShape(imageToReplace.toReplace);
	}
}
 

@Override
public XSLFShape createShape(WriterContext writerContext, JSONObject shape) {
    return null;
}
 

@Override
public XSLFShape createShape(WriterContext writerContext, JSONObject shape) {
    return null;
}
 

@Override
public XSLFShape createShape(WriterContext writerContext, JSONObject shape) {
    return null;
}
 

@Override
public boolean parse(JSONObject object, XSLFShape xslfShape, StreamWriter streamWriter) {
    return false;
}
 

@Override
public XSLFShape createShape(WriterContext writerContext, JSONObject shape) {
    return null;
}
 

@Override
public XSLFShape createShape(WriterContext writerContext, JSONObject shape) {
    return null;
}
 

@Override
public XSLFShape createShape(WriterContext writerContext, JSONObject shape) {
    return null;
}
 

@Override
public XSLFShape createShape(WriterContext writerContext, JSONObject shape) {
    return null;
}
 

@Override
public boolean parse(JSONObject object, XSLFShape xslfShape, StreamWriter writer) {
    return false;
}
 

@Override
public boolean parse(JSONObject object, XSLFShape xslfShape, StreamWriter streamWriter) {
    return false;
}
 

/**
 * 创建形状。
 *
 * @param writerContext 写上下文。
 * @param shape         形状数据。
 * @return 形状；如果创建失败则返回null。
 */
XSLFShape createShape(WriterContext writerContext, JSONObject shape);
 

/**
 * 创建形状。
 *
 * @param writerContext 写上下文。
 * @param shape         形状数据。
 * @return 形状；如果创建失败则返回null。
 */
XSLFShape createShape(WriterContext writerContext, JSONObject shape);
 

/**
 * 解析PPTx元素数据。
 *
 * @param object       解析后的数据。
 * @param xslfShape    要解析的PPTx元素。
 * @param streamWriter 流数据写入器。
 * @return 如果解析成功则返回true；否则返回false。
 */
boolean parse(JSONObject object, XSLFShape xslfShape, StreamWriter streamWriter);