Fusion efficace de présentations sur Android

Fusion de présentations

When you merge one presentation to another, you are effectively combining their slides in a single presentation to obtain one file.

Ce qui peut être fusionné

With Aspose.Slides, you can merge

  • des présentations complètes. All the slides from the presentations end up in one presentation
  • des diapositives spécifiques. Selected slides end up in one presentation
  • des présentations dans un même format (PPT to PPT, PPTX to PPTX, etc.) and in different formats (PPT to PPTX, PPTX to ODP, etc.) to one another.

Options de fusion

You can apply options that determine whether

  • each slide in the output presentation retains a unique style
  • a specific style is used for all the slides in the output presentation.

To merge presentations, Aspose.Slides provides AddClone methods (from the ISlideCollection interface). There are several implementations of the AddClone methods that define the presentation merging process parameters. Every Presentation object has a Slides collection, so you can call a AddClone method from the presentation to which you want to merge slides.

The AddClone method returns an ISlide object, which is a clone of the source slide. The slides in an output presentation are simply a copy of the slides from the source. Therefore, you can make changes the resulting slides (for example, apply styles or formatting options or layouts) without worrying about the source presentations becoming affected.

Fusionner des présentations

Aspose.Slides provides the AddClone(ISlide) method that allows you to combine slides while the slides retain their layouts and styles (default parameters).

This Java code shows you how to merge presentations:

Presentation pres1 = new Presentation("pres1.pptx");
try {
    Presentation pres2 = new Presentation("pres2.pptx");
    try {
        for(ISlide slide : pres2.getSlides())
        {
            pres1.getSlides().addClone(slide);
        }
    } finally {
        if (pres2 != null) pres2.dispose();
    }
    pres1.save("combined.pptx", SaveFormat.Pptx);
} finally {
    if (pres1 != null) pres1.dispose();
}

Fusionner des présentations avec un masque de diapositive

Aspose.Slides provides the AddClone(ISlide, IMasterSlide, boolean) method that allows you to combine slides while applying a slide master presentation template. This way, if necessary, you get to change the style for slides in the output presentation.

This code in Java demonstrates the described operation:

Presentation pres1 = new Presentation("pres1.pptx");
try {
    Presentation pres2 = new Presentation("pres2.pptx");
    try {
        for(ISlide slide : pres2.getSlides())
        {
            pres1.getSlides().addClone(slide, pres2.getMasters().get_Item(0), true);
        }
    } finally {
        if (pres2 != null) pres2.dispose();
    }
    pres1.save("combined.pptx", SaveFormat.Pptx);
} finally {
    if (pres1 != null) pres1.dispose();
}

If you want the slides in the output presentation to have a different slide layout, use the AddClone(ISlide, ILayoutSlide) method instead when merging.

Fusionner des diapositives spécifiques à partir de présentations

Merging specific slides from multiple presentations is useful for creating custom slide decks. Aspose.Slides for Android via Java allows you to select and import only the slides you need. The API preserves formatting, layout, and design of the original slides.

The following Java code creates a new presentation, adds title slides from two other presentations, and saves the result to a file:

Presentation presentation = new Presentation();
Presentation presentation1 = new Presentation("presentation1.pptx");
Presentation presentation2 = new Presentation("presentation2.pptx");
try {
    presentation.getSlides().removeAt(0);
    
    ISlide slide1 = getTitleSlide(presentation1);

    if (slide1 != null)
        presentation.getSlides().addClone(slide1);

    ISlide slide2 = getTitleSlide(presentation2);

    if (slide2 != null)
        presentation.getSlides().addClone(slide2);

    presentation.save("combined.pptx", SaveFormat.Pptx);
} finally {
    presentation2.dispose();
    presentation1.dispose();
    presentation.dispose();
}

static ISlide getTitleSlide(IPresentation presentation) {
    for (ISlide slide : presentation.getSlides()) {
        if (slide.getLayoutSlide().getLayoutType() == SlideLayoutType.Title) {
            return slide;
        }
    }
    return null;
}

Fusionner des présentations avec une disposition de diapositive

This Java code shows you how to combine slides from presentations while applying your preferred slide layout to them to get one output presentation:

Presentation pres1 = new Presentation("pres1.pptx");
try {
    Presentation pres2 = new Presentation("pres2.pptx");
    try {
        for(ISlide slide : pres2.getSlides())
        {
            pres1.getSlides().addClone(slide, pres2.getLayoutSlides().get_Item(0));
        }
    } finally {
        if (pres2 != null) pres2.dispose();
    }
    pres1.save("combined.pptx", SaveFormat.Pptx);
} finally {
    if (pres1 != null) pres1.dispose();
}

Fusionner des présentations avec des tailles de diapositives différentes

To merge 2 presentations with different slide sizes, you have to resize one of the presentations to make its size match that of the other presentation.

This sample code demonstrates the described operation:

Presentation pres1 = new Presentation("pres1.pptx");
try {
    Presentation pres2 = new Presentation("pres2.pptx");
    try {
        pres2.getSlideSize().setSize((float)pres1.getSlideSize().getSize().getWidth(), (float)pres1.getSlideSize().getSize().getHeight(), SlideSizeScaleType.EnsureFit);

        for(ISlide slide : pres2.getSlides())
        {
            pres1.getSlides().addClone(slide);
        }
    } finally {
        if (pres2 != null) pres2.dispose();
    }
    pres1.save("combined.pptx", SaveFormat.Pptx);
} finally {
    if (pres1 != null) pres1.dispose();
}

Fusionner des diapositives dans une section de présentation

This Java code shows you how to merge a specific slide to a section in a presentation:

Presentation pres1 = new Presentation("pres1.pptx");
try {
    Presentation pres2 = new Presentation("pres2.pptx");
    try {
        for(ISlide slide : pres2.getSlides())
        {
            pres1.getSlides().addClone(slide, pres1.getSections().get_Item(0));
        }
    } finally {
        if (pres2 != null) pres2.dispose();
    }
    pres1.save("combined.pptx", SaveFormat.Pptx);
} finally {
    if (pres1 != null) pres1.dispose();
}

The slide is added at the end of the section.

FAQ

Existe-t-il des limites au nombre de diapositives lors de la fusion de présentations ?

No strict limitations. Aspose.Slides can handle large files, but performance depends on the size and system resources. For very large presentations, it’s recommended to use a 64-bit JVM and allocate sufficient heap memory.

Puis-je fusionner des présentations avec des vidéos ou des audios intégrés ?

Yes, Aspose.Slides preserves multimedia content embedded in slides, but the final presentation might become significantly larger.

Les polices seront‑elles conservées lors de la fusion de présentations ?

Yes. Fonts used in source presentations are preserved in the output file, assuming they are installed on the system or embedded.

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