java - org.apache.poi.xslf.usermodel 在文本后面发送图像

Question

我正在制作一个应用程序来创建幻灯片放映。我设法在每张幻灯片上放置一个图像，但它覆盖了书面文本。如何将文字放在图片前面？

这是我的代码。

public void createNewSlide() throws FileNotFoundException, IOException{
        XMLSlideShow ppt = new XMLSlideShow();

        XSLFSlideMaster master = ppt.getSlideMasters().get(0);
        XSLFSlideLayout layout = master.getLayout(SlideLayout.TITLE_ONLY);

        //propiedades do slide
        ppt.setPageSize(new Dimension(1280,720));
        XSLFSlide slide = ppt.createSlide(layout);

        //primeiro slide, começando com texto
        XSLFTextShape title = slide.getPlaceholder(0);
        title.clearText();
        XSLFTextParagraph paragraph = title.addNewTextParagraph();
        XSLFTextRun textRun = paragraph.addNewTextRun();
        textRun.setText("Simple Text");
        textRun.setFontColor(Color.decode("#00ff99"));
        textRun.setFontSize(60.);
        title.setAnchor(new Rectangle(100,100,500,500));

        //adicionando imagem ao ppt
        byte[] picData = IOUtils.toByteArray(new FileInputStream("espace.jpg"));
        XSLFPictureData pcData = ppt.addPicture(picData, PictureData.PictureType.JPEG);
        XSLFPictureShape pictureShape = slide.createPicture(pcData);
        pictureShape.setAnchor(new Rectangle(0,0,1280,720));



        FileOutputStream out = new FileOutputStream("AprentacaoTeste.pptx");
        ppt.write(out);
        out.close();
        ppt.close();
    }

这些是我的依赖项

<dependencies>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>4.0.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>4.0.1</version>
        </dependency>
    </dependencies>

我使用 netbeans 作为 IDE

Answer 1

您插入的图片是形状树中的最后一个形状。所以它位于形状树中所有其他形状的前面。它必须是形状树中的第一个形状，位于所有其他形状之后。但是如果已经添加了形状，则很难更改形状树的顺序。在添加其他形状之前，占位符已经存在于布局中。

但我认为，您想要做的是为幻灯片设置背景图片。到目前为止，这也只能使用底层的 ooxml-schemas 类来实现。但它比改变形状树的顺序要直接得多。

示例:

import java.io.FileOutputStream;
import java.io.FileInputStream;

import org.apache.poi.util.IOUtils;
import org.apache.poi.sl.usermodel.PictureData;
import org.apache.poi.xslf.usermodel.*;

import org.openxmlformats.schemas.presentationml.x2006.main.CTBackgroundProperties;
import org.openxmlformats.schemas.drawingml.x2006.main.CTBlipFillProperties;
import org.openxmlformats.schemas.drawingml.x2006.main.CTRelativeRect;
import org.openxmlformats.schemas.drawingml.x2006.main.CTBlip;

import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Color;

public class CreatePPTXPictureBehindText {

 static void setBackgroundPicture(XSLFSlide slide, String picturePath, PictureData.PictureType pictureType) throws Exception {
  byte[] picData = IOUtils.toByteArray(new FileInputStream(picturePath));
  XSLFPictureData pcData = slide.getSlideShow().addPicture(picData, pictureType);
  CTBackgroundProperties backgroundProperties = slide.getXmlObject().getCSld().addNewBg().addNewBgPr();
  CTBlipFillProperties blipFillProperties = backgroundProperties.addNewBlipFill();
  CTRelativeRect ctRelativeRect = blipFillProperties.addNewStretch().addNewFillRect();
  String idx = slide.addRelation(null, XSLFRelation.IMAGES, pcData).getRelationship().getId();
  CTBlip blib = blipFillProperties.addNewBlip();
  blib.setEmbed(idx);
 }

 public static void main(String[] args) throws Exception {

  XMLSlideShow ppt = new XMLSlideShow();

  //set page size
  ppt.setPageSize(new Dimension(1280,720));

  //create first slide title layout
  XSLFSlideMaster master = ppt.getSlideMasters().get(0);
  XSLFSlideLayout layout = master.getLayout(SlideLayout.TITLE_ONLY);
  XSLFSlide slide = ppt.createSlide(layout);

  //set title placeholder's text and anchor
  XSLFTextShape title = slide.getPlaceholder(0);
  title.clearText();
  XSLFTextParagraph paragraph = title.addNewTextParagraph();
  XSLFTextRun textRun = paragraph.addNewTextRun();
  textRun.setText("Simple Text");
  textRun.setFontColor(Color.decode("#00ff99"));
  textRun.setFontSize(60.);
  title.setAnchor(new Rectangle(100,100,500,500));

  //set background picture for slide
  setBackgroundPicture(slide, "./espace.jpeg", PictureData.PictureType.JPEG);

  FileOutputStream out = new FileOutputStream("./AprentacaoTeste.pptx");
  ppt.write(out);
  out.close();
  ppt.close();
 }
}