Review Request 128821: [frameworks] Implement zooming with a pinch gesture on a touch screen

[Oliver Sander]

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(Updated Sept. 4, 2016, 3:16 p.m.)


Review request for Okular.


Changes
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Implemented (most of) Martin's suggestions


Bugs: 366781
    http://bugs.kde.org/show_bug.cgi?id=366781


Repository: okular


Description
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The attached patch implements document zoom controlled by a two-finger pinch gesture on a touch screen.

The actual zooming was done by copy'n'paste, I don't understand the full details of how zooming works in okular, yet.  So a bit of review would be appreciated.


Diffs (updated)
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  ui/pageview.h 01c39bf 
  ui/pageview.cpp cd53407 

Diff: https://git.reviewboard.kde.org/r/128821/diff/


Testing
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I tested it on my Lenovo Thinkpad Yoga, and it works nicely there.


Thanks,

Oliver Sander

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