Kā Java valodā pievienot attēlus PowerPoint slaidiem

Attēli Aspose.Slides FOSS ir iegulti kā picture frames, formas, kas satur attēlu un var tikt novietotas, mainītas izmēra un stilizētas kā jebkura cita forma. Attēlu dati tiek saglabāti vienreiz prs.getImages() kolekcijā un tiek atsaukti uz rāmi.

Priekšnosacījumi

<dependency>
  <groupId>org.aspose.slides.foss</groupId>
  <artifactId>aspose-slides-foss</artifactId>
  <version>1.0.0</version>
</dependency>

Pievienot attēlu no faila

import org.aspose.slides.foss.Presentation;
import org.aspose.slides.foss.ISlide;
import org.aspose.slides.foss.IPPImage;
import org.aspose.slides.foss.IPictureFrame;
import org.aspose.slides.foss.ILayoutSlide;
import org.aspose.slides.foss.ShapeType;
import org.aspose.slides.foss.export.SaveFormat;
import java.nio.file.Files;
import java.nio.file.Paths;

try (Presentation prs = new Presentation()) {
    ISlide slide = prs.getSlides().get(0);

    // Load image into the presentation's image collection
    byte[] imageData = Files.readAllBytes(Paths.get("photo.jpg"));
    IPPImage img = prs.getImages().addImage(imageData);

    // Add a picture frame at (x=50, y=50, width=400, height=300) in points
    IPictureFrame frame = slide.getShapes().addPictureFrame(
        ShapeType.RECTANGLE,
        50, 50, 400, 300,
        img
    );

    prs.save("with-image.pptx", SaveFormat.PPTX);
}

addPictureFrame paraksts:

addPictureFrame(shapeType, x, y, width, height, image) -> IPictureFrame

Visi izmēri ir punktos (1 punkts = 1/72 collas). Standarta 10 x 7,5 collas slaidam koordinātu telpa ir 720 x 540 punkti.

Pievienot attēlu no plūsmas

Ja jums jau ir attēls kā InputStream (piemēram, lejupielādēts no URL vai nolasīts no datu bāzes):

import org.aspose.slides.foss.Presentation;
import org.aspose.slides.foss.ISlide;
import org.aspose.slides.foss.IPPImage;
import org.aspose.slides.foss.IPictureFrame;
import org.aspose.slides.foss.ILayoutSlide;
import org.aspose.slides.foss.ShapeType;
import org.aspose.slides.foss.export.SaveFormat;
import java.io.FileInputStream;

try (Presentation prs = new Presentation();
     FileInputStream fis = new FileInputStream("logo.png")) {
    IPPImage img = prs.getImages().addImage(fis);

    prs.getSlides().get(0).getShapes().addPictureFrame(
        ShapeType.RECTANGLE,
        200, 100, 300, 200,
        img
    );
    prs.save("logo-slide.pptx", SaveFormat.PPTX);
}

Pievienot vairākus attēlus dažādiem slaidiem

import org.aspose.slides.foss.Presentation;
import org.aspose.slides.foss.ISlide;
import org.aspose.slides.foss.IPPImage;
import org.aspose.slides.foss.IPictureFrame;
import org.aspose.slides.foss.ILayoutSlide;
import org.aspose.slides.foss.ShapeType;
import org.aspose.slides.foss.export.SaveFormat;
import java.nio.file.Files;
import java.nio.file.Paths;

String[] imageFiles = {"slide1.jpg", "slide2.jpg", "slide3.jpg"};

try (Presentation prs = new Presentation()) {
    ILayoutSlide layout = prs.getSlides().get(0).getLayoutSlide();

    // Ensure enough slides exist
    while (prs.getSlides().size() < imageFiles.length) {
        prs.getSlides().addEmptySlide(layout);
    }

    for (int i = 0; i < imageFiles.length; i++) {
        if (!Files.exists(Paths.get(imageFiles[i]))) continue;
        byte[] data = Files.readAllBytes(Paths.get(imageFiles[i]));
        IPPImage img = prs.getImages().addImage(data);
        prs.getSlides().get(i).getShapes().addPictureFrame(
            ShapeType.RECTANGLE, 0, 0, 720, 540, img
        );
    }

    prs.save("multi-image.pptx", SaveFormat.PPTX);
}

Saskaitīt attēlus esošā prezentācijā

import org.aspose.slides.foss.Presentation;
import org.aspose.slides.foss.ISlide;
import org.aspose.slides.foss.IPPImage;
import org.aspose.slides.foss.IPictureFrame;
import org.aspose.slides.foss.ILayoutSlide;
import org.aspose.slides.foss.ShapeType;
import org.aspose.slides.foss.export.SaveFormat;

try (Presentation prs = new Presentation("with-image.pptx")) {
    System.out.println("Presentation contains "
        + prs.getImages().size() + " image(s)");
}

prs.getImages() kolekcija tiek koplietota visos slaidos: tas pats attēla baiti tiek saglabāti vienreiz, pat ja attēla rāmis parādās vairākos slaidos.