Aspose.Slides for Python via .NET 24.4 Release Notes

New Features and Enhancements

Other Improvements and Changes

Public API Changes

Introducing a new Modern API

Due to changes in Aspose.Slides for .NET, since version 24.4 we are starting transition to the new Modern API.

This means that all public API members that have the following classes in their signature will be removed in version 24.8:

• aspose.pydrawing.Graphics
• aspose.pydrawing.Image
• aspose.pydrawing.Bitmap
• aspose.pydrawing.printing.PrinterSettings

For more details, see: Modern API

Added new classes and enums:

• IImage
• ImageFormat
• Images

Methods/properties to be removed and their replacement in Modern API

The following methods and properties are declared as obsolete and will be removed in version 24.8.

Presentation Class

Slide Class

Shape Class

ImageCollection Class

PPImage Class

ImageWrapperFactory Class

PatternFormat Class

IPatternFormatEffectiveData Class

Output Class

Convert PowerPoint Presentation to video with animations and transitions

We’ve added a new feature: PowerPoint presentation-to-video conversion. This feature includes:

• animation of transitions between slides
• shape animation
• text animation

Aspose.Slides for Python via .NET can now play presentations and generate a set of frames with a specific frame per second (FPS). Those frames can then be used to create a video through tools like FFmpeg.

This Python code demonstrates a presentation to video export operation with frames set at 30 FPS:

import aspose.slides as slides

fps = 30

with slides.Presentation("animated.pptx") as presentation:
    with slides.export.PresentationEnumerableFramesGenerator(presentation, fps) as frames_generator:
        for frame_args in frames_generator.enumerate_frames(presentation.slides):
            frame_args.get_frame().save("frame_{}.png".format(frame_args.frames_generator.frame_index))

The PresentationEnumerableFramesGenerator class is a source that sequentially generates individual animation effects. Method PresentationEnumerableFramesGenerator.enumerate_frames allow you to enumerate the frames and save them to disk or write to a video stream.

PdfOptions.rasterize_unsupported_font_styles property added

Added a new property PdfOptions.rasterize_unsupported_font_styles which indicates whether text should be rasterized as a bitmap and saved to PDF when the font does not support bold styling. This approach can enhance the quality of text in the resulting PDF for certain fonts.

Example:

import aspose.slides as slides

with slides.Presentation() as pres:
    pdf_options = slides.export.PdfOptions()
    pdf_options.rasterize_unsupported_font_styles = True
    pres.save("pres.pdf", slides.export.SaveFormat.PDF, pdf_options)

PptxOptions.zip64_mode property added - ZIP64 format support

A new property PptxOptions.zip64_mode specifies whether the ZIP64 format is used for the Presentation document.

Example:

import aspose.slides as slides

with slides.Presentation("demo.pptx") as pres:
    pptx_options = slides.export.PptxOptions()
    pptx_options.zip_64_mode = slides.export.Zip64Mode.ALWAYS
    pres.save("demo-zip64.pptx", slides.export.SaveFormat.PPTX, pptx_options)

ZoomObject.image property replaced with ZoomObject.zoom_image

Instead of ZoomObject.image, use the ZoomObject.zoom_image property:

import aspose.slides as slides

with slides.Presentation("pres.pptx") as pres:
    zoom_frame = pres.slides[0].shapes.add_zoom_frame(150, 20, 50, 50, pres.slides[1])
    image = pres.images.add_image(slides.Images.from_file("image.png"))
    zoom_frame.zoom_image = image