[Libreoffice-bugs] [Bug 124044] New: KDE5 VCL may require a little more cooking for wide consumption (at least on impress)

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=124044

            Bug ID: 124044
           Summary: KDE5 VCL may require a little more cooking for wide
                    consumption (at least on impress)
           Product: LibreOffice
           Version: 6.2.1.2 release
          Hardware: All
                OS: Linux (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Impress
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: sergio.callegari at gmail.com

Description:
Hope that nobody gets offended by this report, it is not my intention and I
truly hope that I do not get misunderstood.

I've been using LibO 6.2 for a while on Kubuntu linux (KDE5). On this platform
LibO defaults to the new KDE5 VCL.  While I greatly appreciate the effort to
bring this new VCL in LibO and the much smoother transitions in between slides
that you get in presentations with it, I am encountering a lot of little
issues, that make me think there can be problems with a wide "production"
consumption of it for the time being.

As LibO is getting to its 6.2.2 release, it looks like in a short time LibO 6.2
will stop being "fresh" and shall get promoted to "still", unless the KDE5 VCL
can receive fixes for most of its little problems, I expect that by that time
all those KDE5 users who are not expert enough to use the SAL environment
variables to force usage of other VCLs may get a little in trouble or at best
confused.

As you probably know, the most relevant issues are:
- Weird "scrollbar" screen appearing when starting presentations
- Weird behavior of the mouse/keyboard in some conditions
And most important
- Sudden inability to perform some actions (for instance, I've decided myself
to write this report while trying to edit a presentation, I have a line
selected, but there is no way to erase it pressing DEL)
- Some unexpected crashes every now and then

Among these, the third one seems the most troublesome problem now (may be
related to the second, though).

My intention here is not to reiterate these issues (that have probably already
been reported), rather to submit the following suggestions for consideration,
in order to provide some more time to the KDE5 (and QT5) VCL plugins to reach a
perfect cooking while preserving the less experienced linux users from problems
that may reduce the LibO appeal to them.

1) Please, consider keeping around the KDE4 VCL for one more release (do not
remove it in 6.3)

2) Please, provide an easier way to configure the VCL than the
SAL_USE_VCLPLUGIN environment variable. For instance, the "Advanced" option tab
could include a "Use conservative view module" option when significant changes
in VCLs are introduced.

I apologize again if this report may appear to the developers of the KDE5 VCL
as diminutive with respect to their achievements. This is definitely not the
intention. Conversely, I appreciate this work very much.

Steps to Reproduce:
See description.

Actual Results:
See description.

Expected Results:
See description.


Reproducible: Always


User Profile Reset: No



Additional Info:
[Information automatically included from LibreOffice]
Locale: en-US
Module: PresentationDocument
[Information guessed from browser]
OS: Linux (All)
OS is 64bit: yes

Version: 6.2.2.1
Build ID: fcd633fb1bf21b0a99c9acb3ad6e526437947b01
CPU threads: 8; OS: Linux 4.18; UI render: default; VCL: kde5; 
Locale: it-IT (en_US.utf8); UI-Language: en-US
Calc: threaded

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