Math Text

What this page is about

Explore Aspose.Slides for Python via Java mathematical text examples: create and format equations, fractions, matrices, and symbols in PPT, PPTX, and ODP presentations.

This article demonstrates working with mathematical text shapes and formatting equations using Aspose.Slides for Python via Java.

Install the package as described in Installation. Each example imports asposeslides before starting the JVM, then imports the API after the JVM is running.

Add Math Text

Create a math shape containing a fraction and the Pythagorean formula.

import jpype
import asposeslides

if not jpype.isJVMStarted():
    jpype.startJVM()

from asposeslides.api import MathBlock, MathematicalText, Presentation

presentation = Presentation()
try:
    slide = presentation.getSlides().get_Item(0)

    # Add a math shape to the slide.
    math_shape = slide.getShapes().addMathShape(0, 0, 720, 150)

    # Access the math paragraph.
    paragraph = math_shape.getTextFrame().getParagraphs().get_Item(0)
    text_portion = paragraph.getPortions().get_Item(0)
    math_paragraph = text_portion.getMathParagraph()

    # Add a simple fraction: x / y.
    fraction = MathematicalText("x").divide("y")
    math_paragraph.add(MathBlock(fraction))

    # Add equation: c² = a² + b².
    math_block = MathematicalText("c").setSuperscript("2").join("=").join(MathematicalText("a").setSuperscript("2")).join("+").join(MathematicalText("b").setSuperscript("2"))
    math_paragraph.add(math_block)
finally:
    presentation.dispose()

Access Math Text

Locate a shape that contains a math paragraph on the slide.

import jpype
import asposeslides

if not jpype.isJVMStarted():
    jpype.startJVM()

from asposeslides.api import AutoShape, MathBlock, MathematicalText, MathPortion, Presentation

presentation = Presentation()
try:
    slide = presentation.getSlides().get_Item(0)

    # Add a math shape that can be found below.
    created_math_shape = slide.getShapes().addMathShape(50, 50, 100, 50)
    created_paragraph = created_math_shape.getTextFrame().getParagraphs().get_Item(0)
    created_portion = created_paragraph.getPortions().get_Item(0)
    created_math_paragraph = created_portion.getMathParagraph()
    created_fraction = MathematicalText("x").divide("y")
    created_math_paragraph.add(MathBlock(created_fraction))

    # Find the first shape that contains a math paragraph.
    math_shape = None
    for shape in slide.getShapes():
        if isinstance(shape, AutoShape):
            text_frame = shape.getTextFrame()
            if text_frame is not None:
                has_math = False
                for paragraph in text_frame.getParagraphs():
                    for portion in paragraph.getPortions():
                        if isinstance(portion, MathPortion):
                            has_math = True
                            break
                    if has_math:
                        break
                if has_math:
                    math_shape = shape
                    break

    if math_shape is not None:
        paragraph = math_shape.getTextFrame().getParagraphs().get_Item(0)
        text_portion = paragraph.getPortions().get_Item(0)
        math_paragraph = text_portion.getMathParagraph()

        # Example: create a fraction (not added here).
        fraction = MathematicalText("x").divide("y")

        # Use math_paragraph or fraction as needed.
finally:
    presentation.dispose()

Remove Math Text

Delete a math shape from the slide.

import jpype
import asposeslides

if not jpype.isJVMStarted():
    jpype.startJVM()

from asposeslides.api import MathBlock, MathematicalText, Presentation

presentation = Presentation()
try:
    slide = presentation.getSlides().get_Item(0)

    math_shape = slide.getShapes().addMathShape(50, 50, 100, 50)

    paragraph = math_shape.getTextFrame().getParagraphs().get_Item(0)
    text_portion = paragraph.getPortions().get_Item(0)
    math_paragraph = text_portion.getMathParagraph()
    fraction = MathematicalText("x").divide("y")
    math_paragraph.add(MathBlock(fraction))

    # Remove the math shape.
    slide.getShapes().remove(math_shape)
finally:
    presentation.dispose()

Format Math Text

Set font properties for a math portion.

import jpype
import asposeslides

if not jpype.isJVMStarted():
    jpype.startJVM()

from asposeslides.api import MathBlock, MathematicalText, Presentation

presentation = Presentation()
try:
    slide = presentation.getSlides().get_Item(0)

    math_shape = slide.getShapes().addMathShape(50, 50, 100, 50)
    paragraph = math_shape.getTextFrame().getParagraphs().get_Item(0)
    text_portion = paragraph.getPortions().get_Item(0)
    math_paragraph = text_portion.getMathParagraph()
    fraction = MathematicalText("x").divide("y")
    math_paragraph.add(MathBlock(fraction))

    text_portion.getPortionFormat().setFontHeight(20)
finally:
    presentation.dispose()