Discussion:
[Discover] [Bug 382191] New: update page gets freaky when scrolling past top
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Harald Sitter
2017-07-10 10:17:30 UTC
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https://bugs.kde.org/show_bug.cgi?id=382191

Bug ID: 382191
Summary: update page gets freaky when scrolling past top
Product: Discover
Version: 5.10.3
Platform: Other
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: discover
Assignee: ***@kde.org
Reporter: ***@kde.org
Target Milestone: ---

- have a bunch of updates
- start updates
- scroll down a bit
- scroll to top
- scroll up some more
- update page gets jumpy layout
- scroll up some more very fast by accelerating wheel sufficiently
- update page starts breathing heavily and jumpin about like wild (due to quick
probably repeated layout reshuffling)
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Harald Sitter
2017-07-10 10:18:44 UTC
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https://bugs.kde.org/show_bug.cgi?id=382191

--- Comment #1 from Harald Sitter <***@kde.org> ---
Created attachment 106531
--> https://bugs.kde.org/attachment.cgi?id=106531&action=edit
video
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Aleix Pol
2017-07-10 10:26:23 UTC
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--- Comment #2 from Aleix Pol <***@kde.org> ---
I cannot reproduce. Which version of Kirigami are you using?
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Harald Sitter
2017-07-10 10:27:56 UTC
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--- Comment #3 from Harald Sitter <***@kde.org> ---
2.2.0
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Aleix Pol
2017-07-10 10:43:00 UTC
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Aleix Pol <***@kde.org> changed:

What |Removed |Added
----------------------------------------------------------------------------
Version|5.10.3 |Master
Assignee|***@kde.org |***@gmail.com
Product|Discover |kirigami
Component|discover |general
Target Milestone|--- |Not decided
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Alexander Mentyu
2017-08-19 17:10:04 UTC
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Alexander Mentyu <***@gmail.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@gmail.com

--- Comment #4 from Alexander Mentyu <***@gmail.com> ---
This bug no longer appears for me in:

Distribution: KDE neon Developer Edition Unstable Branches live iso 20170813
KDE Plasma Version: 5.10.90
KDE Frameworks Version: 5.37.0
Qt Version: 5.9.1
Kernel Version: 4.10.0-32-generic
Discover: 5.10.90
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Alexander Mentyu
2017-08-20 04:04:48 UTC
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https://bugs.kde.org/show_bug.cgi?id=382191

--- Comment #5 from Alexander Mentyu <***@gmail.com> ---
Created attachment 107372
--> https://bugs.kde.org/attachment.cgi?id=107372&action=edit
flickering-scroll-past-top-discover
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Alexander Mentyu
2017-08-20 04:05:08 UTC
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https://bugs.kde.org/show_bug.cgi?id=382191

--- Comment #6 from Alexander Mentyu <***@gmail.com> ---
Created attachment 107373
--> https://bugs.kde.org/attachment.cgi?id=107373&action=edit
flickering-scroll-past-top-discover-2
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Alexander Mentyu
2017-08-20 04:05:30 UTC
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--- Comment #7 from Alexander Mentyu <***@gmail.com> ---
Created attachment 107374
--> https://bugs.kde.org/attachment.cgi?id=107374&action=edit
flickering-scroll-past-top-discover-3
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Alexander Mentyu
2017-08-20 04:06:16 UTC
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--- Comment #8 from Alexander Mentyu <***@gmail.com> ---
I still managed to reproduce flickering - but not upon updates. It's
reproducing sometimes upon regular navigating for me. Three recorder videos
attached.
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Alexander Mentyu
2017-08-20 04:25:21 UTC
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--- Comment #9 from Alexander Mentyu <***@gmail.com> ---
It happens more often for me if scrolling with touchpad.
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Marco Martin
2017-08-28 13:29:04 UTC
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--- Comment #10 from Marco Martin <***@gmail.com> ---
Git commit 3c2d1e23e45c03321e110dabfe77c89d3c3e0703 by Marco Martin.
Committed on 28/08/2017 at 13:28.
Pushed by mart into branch 'master'.

don't take into account the header 2 times when scrolling

flickableItem.topMargin already comprises the header item,
so the calculation where to stop scrolling was wrong, giving the erratic
behavior
Related: bug 383725

M +0 -4 src/controls/templates/private/ScrollView.qml

https://commits.kde.org/kirigami/3c2d1e23e45c03321e110dabfe77c89d3c3e0703
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Marco Martin
2017-08-28 13:30:32 UTC
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--- Comment #11 from Marco Martin <***@gmail.com> ---
can this be tried again in kirigami master after the above commit?
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Alexander Mentyu
2017-08-30 10:18:15 UTC
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--- Comment #12 from Alexander Mentyu <***@gmail.com> ---
Can't reproduce anymore in KDE neon

kirigami-gallery 2.2.0+p16.04+git20170830

plasma-discover 5.10.5+p16.04+git20170825.1638-0
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Nate Graham
2018-02-13 22:34:27 UTC
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Nate Graham <***@zoho.com> changed:

What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
CC| |***@zoho.com
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