Review Request 129099: Make m_drawingEngine a std::unique_ptr

[Oliver Sander]

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https://git.reviewboard.kde.org/r/129099/
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Review request for Okular.


Repository: okular


Description
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Because it has ownership semantics.

The code would be even shorter with std::make_unique, but that is C++14.  Is that allowed in Okular?


Diffs
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  ui/presentationwidget.h 69574d2 
  ui/presentationwidget.cpp c16d616 

Diff: https://git.reviewboard.kde.org/r/129099/diff/


Testing
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Thanks,

Oliver Sander

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