[Okular-devel] [okular] [Bug 349863] New: Zooming in shows only a white paper from distinct zoom levels

[Rafael]

https://bugs.kde.org/show_bug.cgi?id=349863

            Bug ID: 349863
           Summary: Zooming in shows only a white paper from distinct zoom
                    levels
           Product: okular
           Version: 0.22.2
          Platform: openSUSE RPMs
                OS: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: NOR
         Component: DjVu backend
          Assignee: okular-devel at kde.org
          Reporter: rmrcbm at gmail.com

In general, when I try to zoom a DjVu image, Okular shows only a white
background instead continuing zooming the image. The zoom level is distinct in
each DjVu document.
You can download this DjVu image
http://www.tr3s60.com/Reproduccion_Ampliada/Zaragoza_1861_djvu/AMZ_4-2_0274.djvu
and enlarge it in Okular till you reach 50% level. Then you will see a white
background, not the image.

Reproducible: Always

Steps to Reproduce:
1.Open a DjVu image
2.Zoom in it till you see no image

Actual Results:  
Okular is showing a white background instead of the image.

Expected Results:  
To continue enlarging the image.

For researchers, this is an important feature, cause they need to see fine
details in old documents digitized in DjVu.

DjVuLibre (DjView) enlarge the referenced document as far as 1200% level.

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