Add Superscript and Subscript to PowerPoint Using Java

When we add a trademark, copyright or other symbol to our presentation, we might want the symbol to appear slightly above or below a certain text. In Microsoft PowerPoint, we can implement this effect simply by applying superscript or subscript formatting to the symbol. In this article, we will demonstrate how to achieve this task programmatically using Free Spire.Presentation for Java.

Import JAR Dependency (2 Methods)

● You can also add the jar dependency to your maven project by adding the following configurations to the pom.xml.

<repositories>
<repository>
<id>com.e-iceblue</id>
<name>e-iceblue</name>
<url>http://repo.e-iceblue.com/nexus/content/groups/public/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>e-iceblue</groupId>
<artifactId>spire.presentation.free</artifactId>
<version>5.1.0</version>
</dependency>
</dependencies>

Steps and Sample Code

  • Create a Presentation instance and load a PowerPoint document using Presentation.loadFromFile() method.
  • Get the desired slide using Presentation.getSlides().get() method.
  • Add a shape to the slide using ISlide.getShapes().appendShape() method and set shape fill type and line color.
  • Access the text frame of the shape using IAutoShape.getTextFrame() method, then clear the default paragraph in the text frame using ITextFrameProperties.getParagraphs().clear() method.
  • Create a paragraph using ParagraphEx class, and add normal text to the paragraph using ParagraphEx.setText() method.
  • Create a portion with text using PortionEx class, and then apply superscript or subscript formatting to the text using PortionEx.getFormat().setScriptDistance(float value) method.
  • Set text color, font and font size for the normal text and the superscript or subscript text.
  • Append the paragraph to the text frame of the shape using ITextFrameProperties.getParagraphs().append() method.
  • Save the result document using Presentation.saveToFile() method.
import com.spire.presentation.*;
import com.spire.presentation.drawing.*;

import java.awt.*;

public class AddSuperscriptAndSubscript {
public static void main(String []args) throws Exception {

//Load a PowerPoint document
Presentation presentation = new Presentation();
presentation.loadFromFile("template.pptx");

//Get the first slide
ISlide slide = presentation.getSlides().get(0);

//Add a shape to the slide
IAutoShape shape = slide.getShapes().appendShape(ShapeType.RECTANGLE, new Rectangle(150, 100, 200, 50));
shape.getFill().setFillType(FillFormatType.NONE);
shape.getShapeStyle().getLineColor().setColor(Color.white);

//Access the text frame of the shape
ITextFrameProperties textFrame = shape.getTextFrame();
//Clear the default paragraph in the text frame
textFrame.getParagraphs().clear();

//Create a paragraph with normal text
ParagraphEx para = new ParagraphEx();
para.setText("E=mc");

//Create a portion with superscript text
PortionEx tr = new PortionEx("2");
tr.getFormat().setScriptDistance(40);

//Append the portion to the paragraph
para.getTextRanges().append(tr);

para.getTextRanges().append(new PortionEx("\n"));

//Set text color, font and font size for the normal text
tr = para.getTextRanges().get(0);
tr.getFill().setFillType(FillFormatType.SOLID);
tr.getFill().getSolidColor().setColor(new Color(128,0,128));
tr.setFontHeight(20);
tr.setLatinFont(new TextFont("Arial"));

//Set text color and font for the superscript text
tr = para.getTextRanges().get(1);
tr.getFill().setFillType(FillFormatType.SOLID);
tr.getFill().getSolidColor().setColor(Color.BLUE);
tr.setLatinFont(new TextFont("Arial"));

//Append the paragraph to the text frame of the shape
textFrame.getParagraphs().append(para);

//Create another paragraph with normal text
para = new ParagraphEx();
para.setText("X");

//Create a portion with subscript text
tr = new PortionEx("100");
tr.getFormat().setScriptDistance(-25);

//Append the portion to the paragraph
para.getTextRanges().append(tr);

//Set text color, font and font size for the normal text
tr = para.getTextRanges().get(0);
tr.getFill().setFillType(FillFormatType.SOLID);
tr.getFill().getSolidColor().setColor(new Color(128,0,128));
tr.setFontHeight(20);
tr.setLatinFont(new TextFont("Arial"));

//Set text color and font for the subscript text
tr = para.getTextRanges().get(1);
tr.getFill().setFillType(FillFormatType.SOLID);
tr.getFill().getSolidColor().setColor(Color.BLUE);
tr.setLatinFont(new TextFont("Arial"));

//Append the paragraph to the text frame of the shape
textFrame.getParagraphs().append(para);

//Save the result document
presentation.saveToFile("AddSuperscriptAndSubscript.pptx", FileFormat.PPTX_2013);
}
}

For more functions provided by the free PowerPoint library, you can refer to the documentation.

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