[digikam] [Bug 374087] New: Create Calendar creates corrupt looking image when using High setting when sending to other than printer

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[digikam] [Bug 374087] New: Create Calendar creates corrupt looking image when using High setting when sending to other than printer

bugzilla_noreply
https://bugs.kde.org/show_bug.cgi?id=374087

            Bug ID: 374087
           Summary: Create Calendar creates corrupt looking image when
                    using High setting when sending to other than printer
           Product: digikam
           Version: 5.4.0
          Platform: MS Windows
                OS: MS Windows
            Status: UNCONFIRMED
          Severity: minor
          Priority: NOR
         Component: Calendar
          Assignee: [hidden email]
          Reporter: [hidden email]
  Target Milestone: ---

Created attachment 102959
  --> https://bugs.kde.org/attachment.cgi?id=102959&action=edit
picture copied from adobe pdf and coverted to png so you can see the horizontal
banding.  I did not provide a full calendar export becuase the PDF is very
large (~20MB)

I tried the create calendar option (never used it before). I had an issue when
exporting to adobe PDF (using Adobe's Printer in Windows)and exporting to
OneNote as another test.  However I was able to print to a normal printer
without issues.  
The problem was when using the default resolution setting of "high" it results
in images that have horizontal lines over them.  If I use the "low" setting it
is okay and I do not see the lines.

I ran 2 tests outputting to Adobe PDF and to OneNote2013 and got similar (but
not exact results).  I also printed to a normal printer and it was okay.  

This is on Windows 7, 64bit version of digikam, test version of 5.4.0
(12/23/2016)
Example provided.

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[digikam] [Bug 374087] Create Calendar creates corrupt looking image when using High setting when sending to other than printer

bugzilla_noreply
https://bugs.kde.org/show_bug.cgi?id=374087

[hidden email] changed:

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                 CC|                            |[hidden email]

--- Comment #1 from [hidden email] ---
The compnent used to print is Qt5::PrintSupport.

There is no PDF export code in digiKam. We pass data to print to Qt interface
which re-route to right printer.

As it work with real printer driver, it must work with virtual one too. there
is no difference from digiKam side about printing.

So, i suspect a Qt5 bug or a problem with your virtual driver.

Gilles Caulier

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