Aspose.Slides TextFrame: Paragraph Portions Are Collapsing to Only One Portion

Aspose.Slides Product Family
,
1

I have a presentation, where I want to edit or add a new shape with a text frame, and specify a paragraph with portions, when I set it I see the correct count of portions in my shape. But when I save the presentation into the MemoryStream and open the presentation via the stream I saved before, my portions of the shape are collapsed into 1, but initially, it was 3 different portions. Why?

Code to reproduce:

var presentation  = new Presentation(<path_to_presentation>);

var shape = presentation.Slides[2].Shapes[5];

var textFrame = shape.GetTextFrame();

 textFrame.Text = string.Empty;
 textFrame.Paragraphs.Clear();

 var portions = new string[] { "0X xxxxxxxx x", "xx", "xxxxxxxxxx xx XXXX" };

 textFrame.Paragraphs.Add(new Paragraph());

 var paragraph = textFrame.Paragraphs[0];

 paragraph.Portions.Clear();

 for (var j = 0; j < portions.Length; j++)
 {
     paragraph.Portions.Add(new Portion());
     var portion = paragraph.Portions[j];
     portion.Text = portions[j];
 }

var expectedCount = presentation.Slides[2].Shapes[5].GetTextFrame().Paragraphs[0].Portions.Count; // 3

 var memoryStream = new MemoryStream();
 presentation.Save(memoryStream, saveFormat);
 memoryStream.Seek(0, SeekOrigin.Begin);

var presentation2 = new Presentation(memoryStream);
var actualCount = presentation2 .Slides[2].Shapes[5].GetTextFrame().Paragraphs[0].Portions.Count; // 1

This should be reproducible with all presentations (new or existing, I suggest to you use mine)

00017ab04501425aa4ea8fd85a20d70d.zip (3.4 MB)

2

@GeorgiyS,
Thank you for reporting on the issue. I reproduced the problem you described.

We have opened the following new ticket(s) in our internal issue tracking system and will consider your question according to the terms mentioned in Free Support Policies.

Issue ID(s): SLIDESNET-44534

You can obtain Paid Support Services if you need support on a priority basis, along with the direct access to our Paid Support management team.

3

@GeorgiyS,
Our developers have investigated the case. This behavior of merging text portions is not a bug. Aspose.Slides handles text portions the same way as PowerPoint. This is because splitting text into portions only makes sense when the text format of one portion differs from another. If the text formats of the portions are the same, they are merged. This improves the performance of applications that read and render text by eliminating the need to repeatedly calculate the text format.