[kate] [Bug 442060] Mac OS Trackpad scroll buggy

[Adrian Damian]

https://bugs.kde.org/show_bug.cgi?id=442060

Adrian Damian <damian.adrian24 at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REPORTED                    |CONFIRMED
     Ever confirmed|0                           |1

--- Comment #7 from Adrian Damian <damian.adrian24 at gmail.com> ---
OK, I think I managed to narrow down the issue to these two commits. Reverting
them makes the scroll stutter / stop (while still two-finger scrolling on the
trackpad) go away.

https://invent.kde.org/frameworks/ktexteditor/-/commit/8f8be67ccf5b151d4c6cc570229fe4fbe28e76b3
"Add basic touchscreen support"
https://invent.kde.org/frameworks/ktexteditor/-/commit/aa757c80e6ce8efee288c58154998d4e8e0f0dde
"Use Okular's QScroller settings"

I used the latest versions of libraries:

kde/applications/kate                   : 21.08.1
kde/frameworks/tier3/ktexteditor        : 5.86.0

I don't really know how to fix this, other than reverting the two commits (but
that would remove touchscreen support). Is reverting OK?

For now I'll keep using my own build.

---

For anyone that's affected by this, here's how to make your own build:

* Install Craft:
https://community.kde.org/Guidelines_and_HOWTOs/Build_from_source/Mac#Installation_using_Craft
(commands below assume the default ~/CraftRoot path was used).

* AFAICT, this "installs" the two packages (kate uses ktexteditor) in a way
that allows the sources to be edited (at
~/CraftRoot/build/$full_package_name/work/$package-$version).

    craft -i --no-cache kate ktexteditor

* Remove the lines added in the two commits above from these files:

   
~/CraftRoot/build/kde/frameworks/tier3/ktexteditor/work/ktexteditor-5.86.0/src/view/kateviewinternal.cpp
   
~/CraftRoot/build/kde/frameworks/tier3/ktexteditor/work/ktexteditor-5.86.0/src/view/kateviewinternal.h

   The versions may vary, you can go to the directory that contains src/ by
doing "cs ktexteditor".

* Compile the changes and create an installer:

    craft --compile --install --qmerge ktexteditor kate && craft --package kate

  The path to a .dmg should be output at the end; should be something like:

    ~/CraftRoot/tmp/kate-21.08.1-macos-64-clang.dmg

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