https://bugs.kde.org/show_bug.cgi?id=341939
--- Comment #4 from Tobias Deiminger ---
Git commit a29e4eaff5889eee632ce93c2e6a313cd9c011a1 by Tobias Deiminger.
Committed on 29/11/2018 at 20:41.
Pushed by tobiasdeiminger into branch 'Applications/18.12'.
Fix inconsistent viewport positioning in PageView
Summary:
This diff unifies the calculation of the viewport position from a given
DocumentViewport. PageView::notifyViewportChanged and
PageView::slotRelayoutPages used to handle it differntly, which resulted in
viewport jumps for no reason.
It happened in various situations, e.g. when jumping to a page using the footer
page navigation, or when reloading the document after presentation mode left,
or when resizing the main window after presentation mode left.
The diff selects the notifyViewportChanged way (align viewport top border with
page top margin) as golden behavior in case of rePos.enabled == false.
Related: bug 357958, bug 400890
341939 and 400890 are fixed partially. These two still suffer from a minor
displacement that happens when finished signal arrives from pixmap generation
thread.
Test Plan:
- When using the footer page navigation to jump to different pages, new page
top is always algined with viewport top.
- After changing page with footer page navigation, press F5 to reload. Page top
stays aligned with viewport top.
- When exiting presentation mode, and touching the file, page top stays aligned
with viewport top.
- When exiting presentation mode, and changing main window size, page top stays
aligned with viewport top.
Reviewers: #okular, sander
Reviewed By: sander
Subscribers: ngraham, sander, aacid, okular-devel
Tags: #okular
Differential Revision: https://phabricator.kde.org/D16941
A +---autotests/data/simple-multipage.pdf
A +82 -0autotests/data/simple-multipage.tex
M +30 -0autotests/parttest.cpp
M +37 -30 ui/pageview.cpp
M +1-0ui/pageview.h
https://commits.kde.org/okular/a29e4eaff5889eee632ce93c2e6a313cd9c011a1
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