เพิ่มลายน้ำในงานนำเสนอ PPTX โดยใช้ Java

Presentation pres = new Presentation();
try {
    IMasterSlide master = pres.getMasters().get_Item(0);
    IAutoShape watermarkShape = master.getShapes().addAutoShape(ShapeType.Triangle, 0, 0, 0, 0);
    ITextFrame watermarkTextFrame = watermarkShape.addTextFrame("Watermark");

    pres.save("watermark.pptx", SaveFormat.Pptx);
} finally {
    if (pres != null) pres.dispose();
}

Presentation pres = new Presentation();
try {
    IPPImage image = pres.getImages().addImage(Files.readAllBytes(Paths.get("watermark.png")));

    IMasterSlide master = pres.getMasters().get_Item(0);

    IAutoShape watermarkShape = master.getShapes().addAutoShape(ShapeType.Triangle, 0, 0, 100, 100);

    watermarkShape.getFillFormat().setFillType(FillType.Picture);
    watermarkShape.getFillFormat().getPictureFillFormat().getPicture().setImage(image);
    watermarkShape.getFillFormat().getPictureFillFormat().setPictureFillMode(PictureFillMode.Stretch);

    pres.save("watermark2.pptx", SaveFormat.Pptx);
} finally {
    if (pres != null) pres.dispose();
}