[Okular-devel] [Bug 298469] New: okular should display and navigate using djvu page titles when available

[Evan Sosenko]

https://bugs.kde.org/show_bug.cgi?id=298469

            Bug ID: 298469
          Severity: wishlist
           Version: unspecified
          Priority: NOR
          Assignee: okular-devel at kde.org
           Summary: okular should display and navigate using djvu page
                    titles when available
    Classification: Unclassified
                OS: other
          Reporter: razorx at evansosenko.com
          Hardware: Other
            Status: UNCONFIRMED
         Component: DjVu backend
           Product: okular

Books and other documents often have sectioned page numbering. For example, a
cover page, pages i, ii, ..., ix for the front matter, then the real page 1
several physical pages in.

Page titles are supported in DjVu as page number alternatives, however okular
does not implement this feature. This situation is analogous to bug 187237 for
PDF files.

>From the DjVuLibre Documentation: When page titles are available, recent
versions of the DjVuLibre viewers display these page titles instead of page
numbers and also accept them in page selection options.

Reproducible: Always

Steps to Reproduce:
Open a DjVu file with page titles.
Actual Results:  
Page numbers are displayed and used for navigation.

Expected Results:  
Anywhere page numbers appear, page titles (when they exist) should be displayed
instead. Any navigation (go to page, the document outline, and DjVu annotation
links on the pages) should always look-up by page title first and then page
number.

DjView4 exhibits the desired behavior and may be used as a reference.

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