[Libreoffice-bugs] [Bug 125573] New: FILEOPEN PPTX Text in text transform shapes is not scaled to the path

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=125573

            Bug ID: 125573
           Summary: FILEOPEN PPTX Text in text transform shapes is not
                    scaled to the path
           Product: LibreOffice
           Version: 6.1.1.2 release
          Hardware: x86-64 (AMD64)
               URL: https://standards.iso.org/ittf/PubliclyAvailableStanda
                    rds/c071691_ISO_IEC_29500-1_2016.zip
                OS: Windows (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Impress
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: rb.henschel at t-online.de

Created attachment 151758
  --> https://bugs.documentfoundation.org/attachment.cgi?id=151758&action=edit
OOXML WordArt shape and screenshot of PowerPoint 365

Open the attached file. It contains a shape with a "triangle" transform and an
image of the shape in PowerPoint. Notice, that the text is not scaled to the
path length.

The error does not only occur in this shape, but other shapes with 'warp
transform' are effected too.

The OOXML specification contains an algorithm how to transform the text
content. It is in section 20.1.9.16 prstTxWarp. That is page 2906/2907 in
ISO/IEC 29500-1:2016(E). The idea is, that the tightest rectangle around the
text is mapped to the area between the two paths of the shape. If you move the
handle a little bit, the paths are drawn as help lines.

This is a follow up report to bug 116350, where the feature was implemented.

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