Manage Text Portions in Presentations in .NET

Get Coordinates of a Text Portion

GetCoordinates() method has been added to IPortion and Portion class which allows retrieving the coordinates of the beginning of the portion:

using (Presentation presentation = new Presentation("Shapes.pptx"))
{
    IAutoShape shape = (IAutoShape)presentation.Slides[0].Shapes[0];
    var textFrame = (ITextFrame)shape.TextFrame;

    foreach (var paragraph in textFrame.Paragraphs)
    {
        foreach (Portion portion in paragraph.Portions)
        {
            PointF point = portion.GetCoordinates();
            Console.Write(Environment.NewLine + "Corrdinates X =" + point.X + " Corrdinates Y =" + point.Y);
        }
    }
}

FAQ

Can I apply a hyperlink to only part of the text within a single paragraph?

Yes, you can assign a hyperlink to an individual portion; only that fragment will be clickable, not the entire paragraph.

How does style inheritance work: what does a Portion override, and what is taken from Paragraph/TextFrame?

Portion-level properties have the highest precedence. If a property is not set on the Portion, the engine takes it from the Paragraph; if it is not set there either, from the TextFrame or the theme style.

What happens if the font specified for a Portion is missing on the target machine/server?

Font substitution rules apply. The text may reflow: metrics, hyphenation, and width can change, which matters for precise positioning.

Can I set a Portion-specific text fill transparency or gradient independent of the rest of the paragraph?

Yes, text color, fill, and transparency at the Portion level can differ from neighboring fragments.