[Okular-devel] [okular] [Bug 334711] New: EPUB format is not handled correctly (TOC, images, pages not displayed)

[Stas]

https://bugs.kde.org/show_bug.cgi?id=334711

            Bug ID: 334711
           Summary: EPUB format is not handled correctly (TOC, images,
                    pages not displayed)
    Classification: Unclassified
           Product: okular
           Version: 0.19.0
          Platform: openSUSE RPMs
                OS: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: NOR
         Component: EPub backend
          Assignee: okular-devel at kde.org
          Reporter: ss.paranoid at gmail.com

When opening some EPUB files, TOC often displays page 1 even if the file has
more than 200 pages, some pages and some blocks are completely invisible.

Compared with Calibre viewing, which is far from Okular in terms of usability,
but has no issues viewing EPUB files.

Calibre: http://calibre-ebook.com/

Reproducible: Always

Steps to Reproduce:
1. Download sample epub file:
http://www.blacklibrary.com/Downloads/Product/epub/Escalation-Preview.epub
2. Open in Okular
3. Compare with Calibre
Actual Results:  
1. TOC displays 5 chapters with pages: 1, 1, 1, 6, 1; Calibre can navigate
through TOC correctly.
2. After greenish image, huge chunk of text and another image is completely
missing.
3. Fonts for title "Baneblade" and the line below is not antialiased, hard to
read on smaller zoom.
4. Image of baneblade does not fit the page.
5. All of the document contents is missing after crewman image.

Expected Results:  
1. Full document contents should be displayed.
2. Images should be centered/aligned correctly.
3. Probably TOC should not display page numbers, just jump to specified anchor,
because page number has to be recalculated every time window size is changed.
But even if numbers will be displayed incorrectly - more importantly is to jump
to specified anchor than seeing actual number.

One more preview file that is missing almost all the pages when viewed in
Okular:
http://www.blacklibrary.com/Downloads/Product/epub/Imperial-Knights-Preview.epub

Using OpenSUSE factory KDE packages from here:
http://download.opensuse.org/repositories/KDE:/Current/openSUSE_13.1/

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