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  1. Qt
  2. QTBUG-69310

Setvisible(false) on QTextBlock is not adjusting the scroll bars

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    Details

    • Platform/s:
      Windows
    • Commits:
      fcba9fa861574f33e1d2e54d8c8d6da8062927cd (qt/qtbase/5.12)

      Description

      If user call setvisible(false) to some of the blocks (say 100 to 200), scroll bars are not adjusted automatically. 

      Steps to reproduce:

      1. Execute the attached project.
      2. Click the hide button, and then scroll down. 
      3. A Sudden jump is seen in scrollbar when we reach line 99. 

      Expected result: 

      The scrollbar should be adjusted so that there is smooth scrolling. 

      Note: Tried many things, but no help:

      1. ed->document()>markContentsDirty(0,ed>document()->characterCount());

      2. ed->viewport()>update(); // shows correctly but wheel does not scroll 

      3. static_cast<QPlainTextDocumentLayout *>(ed>document()>documentLayout())>requestUpdate();

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            Assignee:
            allan.jensen Allan Sandfeld Jensen
            Reporter:
            shmittal Shveta Mittal
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              Dates

              Created:
              Updated:
              Resolved:

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