Aspose.Slides for Python via .NET 25.11 Release Notes

New Features and Enhancements

Other Improvements and Changes

Public API Changes

Complete Transition to Modern API

In version 25.11, we have completed the transition to the Modern API.

As previously noted in the 24.4 Release Notes , the public Aspose.Slides API has completely discontinued the use of proxy types associated with the System.Drawing.Common assembly.

Methods and properties that used these types were previously marked as obsolete and have now been completely removed in this release.

Please note that types that are proxy of types from System.Drawing.Primitives remain in the public API.

Added New Method: IFontsManager.get_substitutions

The new method, get_substitutions(slides), has been added to the IFontsManager interface and implemented in the FontsManager class. This enhancement allows developers to obtain information about fonts that will be substituted during the rendering of the specified slides.

The following code sample demonstrates how to use this method:

import aspose.slides as slides

with slides.Presentation("pres.pptx") as pres:
    target_slides = [1, 2, 3, 4]
    for font_substitution in pres.fonts_manager.get_substitutions(target_slides):
        print(font_substitution.original_font_name, "-", font_substitution.substituted_font_name)

Added New Class: MathPhantom

The MathPhantom class and the IMathPhantom interface have been added. They represent a phantom math object (<m:phant>) that affects the layout of its child element without necessarily displaying it. A phantom can hide its base expression while preserving its width, height, or depth - useful for aligning formulas or reserving space. Visibility and geometry behavior are controlled by properties such as show, zero_width, zero_asc, zero_desc, and transp.

Example:

import aspose.slides.mathtext as mathtext

# ...
phant = mathtext.MathPhantom(mathtext.MathFraction(mathtext.MathematicalText("1"), mathtext.MathematicalText("2")))
phant.show = False
phant.zero_asc = True
# ...

Added New Property: ISlideShowTransition.duration

The new property, duration, has been added to the ISlideShowTransition interface and implemented in the SlideShowTransition class. This property gets or sets the duration of the slide transition effect in milliseconds. It corresponds to the p14:dur attribute of the p:transition element in the PresentationML schema. If not set, the duration is determined automatically based on the speed property and the transition type.

Example:

import aspose.slides as slides

presentation.slides[0].slide_show_transition.duration = 500 # Sets the transition duration to 500 ms

Added New Property: ITextSearchOptions.include_notes

The new property, include_notes, has been added to the ITextSearchOptions interface and implemented in the TextSearchOptions class. This property allows including text contained in slide notes when performing text replacement or highlighting operations using the Presentation.replace_text or Presentation.highlight_text methods.

Behavior:

• True - text inside slide notes is included in the replacement or highlighting process.
• False (default) - text inside slide notes is ignored.

The following code sample demonstrates how to use this option:

import aspose.slides as slides

with slides.Presentation("demo.pptx") as presentation:
    options = slides.TextSearchOptions()
    options.include_notes = True
    options.whole_words_only = True

    presentation.replace_text("Aspose", "Aspose.Slides", options, None)
    presentation.save("demo_out.pptx", slides.export.SaveFormat.PPTX)

Removed Obsolete Interface: INotesCommentsLayoutingOptions

The obsolete INotesCommentsLayoutingOptions interface has been removed. Please use the ISlidesLayoutOptions interface instead.

Removed Obsolete Property: ISwfOptions.notes_comments_layouting

The obsolete notes_comments_layouting property has been removed from ISwfOptions interface and SwfOptions class. Please use the slides_layout_options property instead.

Removed Obsolete Property: IHtml5Options.NotesCommentsLayouting

The obsolete notes_comments_layouting property has been removed from IHtml5Options interface and Html5Options class. Please use the slides_layout_options property instead.