Review Request 129189: Fix blurry preview on HiDPI displays

[Peter Wu]

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https://git.reviewboard.kde.org/r/129189/
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(Updated Oct. 20, 2016, 8:47 p.m.)


Status
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This change has been marked as submitted.


Review request for KDE Graphics and Boudhayan Gupta.


Changes
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Submitted with commit a41e83edbaadd27cd8ea85d4dfa375033e8ade84 by Peter Wu to branch master.


Repository: spectacle


Description
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THe captured pixmap should always have devicePixelRatio one, it only
needs to be changed when it is actually drawn in the preview widget.

Also fixes a regression from e4c2e564a5b91497132d9a20d8f521af405286bd
("Replace KScreen by QScreen for current window grab"), now the current
screen grab mode will again capture the full screen on HiDPI screens.

Tested with: QT_SCALE_FACTOR=2 src/spectacle


Diffs
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  src/Gui/KSImageWidget.cpp 365a5f327583a6d248b90eabdb0fb573b488589f 
  src/PlatformBackends/X11ImageGrabber.h 56381e8dc65b681bc8d67acebfb837d0900a7d90 
  src/PlatformBackends/X11ImageGrabber.cpp 6dc3ffd6dae0915dd2394d8a5bd468ceaa1baa0b 

Diff: https://git.reviewboard.kde.org/r/129189/diff/


Testing
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Image is sharper now with this option.


Thanks,

Peter Wu

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