Package: libqt6widgets6t64
Version: 6.4.2+dfsg-21.1+b1
Tags: moreinfo
Sorry, I missed below part of previous report.
> B. Setting QT_QPA_PLATFORMTHEME=gtk3 or xdgdesktopportal
> -> Isn't reproducable.
This is wrong, I missed.
Situation of B. , make *reproducable* this regression.
Sorry...
Ohta.
On Fri, 31 May 2024 00:29:27 +0900
"K.Ohta" <whatisthis.sow...@gmail.com> wrote:
> Package: libqt6widgets6t64
> Version: 6.4.2+dfsg-21.1+b1
> Tags: moreinfo
>
> I research this issue when reproduce, more.
>
> Now, I found below (with MATE desktop environment)
> results of different by environment variables.
>
> A. Not setting something by hand
> (excepts QT_QPA_PLATFORMTHEME has already set to gtk3 etc..)
> -> This issue is reproducable.
>
> B. Setting QT_QPA_PLATFORMTHEME=gtk3 or xdgdesktopportal
> -> Isn't reproducable.
>
> C. Setting XDG_CURRENT_DESKTOP=KDE and
> *unset* QT_QPA_PLATFORMTHEME
> -> ISN'T REPRODUCABLE, this regression don't make.
>
> D. Setting XDG_CURRENT_DESKTOP=KDE and
> *set* QT_QPA_PLATFORMTHEME to anything(maybe..)
> -> This also be reproduce.
>
> Best regards,
> Ohta.
>
>
> On Sun, 26 May 2024 19:01:07 +0900
> Kyuma Ohta <whatisthis.sow...@gmail.com> wrote:
>
> > Package: libqt6widgets6t64
> > Version: 6.4.2+dfsg-21.1+b1
> > Severity: normal
> >
> > Dear Maintainer,
> >
> > I wrote program QFileDialog to select file(s).
> > With non-native dialog (Qt owned, not Desktop-Environment's), this
> > is very slow. This widget eats a lot of CPU time usage at creating ,
> > also move to some directories.
> >
> > --- Sample ---
> > #include <QFileDialog>
> >
> > void foo::open_dialog(QString& _dir, QStringList& _filter_list)
> > {
> > QFileDialog* dlg = new QFileDialog(nullptr);
> >
> > dlg->setAttribute(Qt::WA_DeleteOnClose, true);
> > dlg->setOption(QFileDialog::ReadOnly, (is_save) ? false : true);
> > dlg->setOption(QFileDialog::DontUseCustomDirectoryIcons, true);
> > dlg->setAcceptMode(QFileDialog::AcceptOpen);
> > dlg->setFileMode(QFileDialog::ExistingFile);
> >
> > // [1]
> > dlg->setOption(QFileDialog::DontUseNativeDialog, true);
> >
> > // [2]
> > //dlg->setViewMode(QFileDialog::Detail);
> > dlg->setViewMode(QFileDialog::List);
> >
> > // Below connection is sample.Any slots may exist.
> > connect(dlg, SIGNAL(fileSelected(QString)), this,
> > SLOT(read_file(QString))); connect(dlg, SIGNAL(finished(int)), this,
> > SLOT(finished_dialog_slot(int))); connect(dlg, SIGNAL(destroyed()),
> > this, SLOT(close_dialog_slot()));
> >
> > dlg->setDirectory(_dir);
> > dlg->setNameFilters(_filter_list);
> >
> > dlg->setModal(false);
> >
> > dlg->open();
> > }
> >
> > --- END SAMPLE ---
> > This regression don't happen with Qt 5.x, at least 5.15.
> > # I forgot for older minor version, i.e. 5.6 ...
> >
> > But, with Qt 6.x (also 6.2! not only 6.4!), this regression always
> > happenes.
> >
> > [1] When this option set to false, use theme's file-selector (i.e.
> > Gtk, Mate, XDG...). [2] Set with both List and Detail, seems to be
> > no difference.
> >
> > Best regards,
> > Kyuma Ohta.
> >
> > *** Reporter, please consider answering these questions, where
> > appropriate ***
> >
> > * What led up to the situation?
> > * What exactly did you do (or not do) that was effective (or
> > ineffective)?
> > * What was the outcome of this action?
> > * What outcome did you expect instead?
> >
> > *** End of the template - remove these template lines ***
> >
> >
> > -- System Information:
> > Debian Release: trixie/sid
> > APT prefers unstable-debug
> > APT policy: (500, 'unstable-debug'), (500, 'stable-security'),
> > (500, 'oldstable-security'), (500, 'unstable'), (1,
> > 'experimental-debug'), (1, 'experimental') Architecture: amd64
> > (x86_64) Foreign Architectures: i386
> >
> > Kernel: Linux 6.9.1-homebrew-15.1-amd64 (SMP w/12 CPU threads;
> > PREEMPT) Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
> > Locale: LANG=ja_JP.UTF-8, LC_CTYPE=ja_JP.UTF-8 (charmap=UTF-8),
> > LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash
> > Init: systemd (via /run/systemd/system)
> > LSM: AppArmor: enabled
> >
> > Versions of packages libqt6widgets6t64 depends on:
> > ii libc6 2.38-11
> > ii libgcc-s1 14.1.0-1
> > ii libqt6core6t64 [qt6-base-abi] 6.4.2+dfsg-21.1+b1
> > ii libqt6gui6t64 6.4.2+dfsg-21.1+b1
> > ii libstdc++6 14.1.0-1
> >
> > libqt6widgets6t64 recommends no packages.
> >
> > libqt6widgets6t64 suggests no packages.
> >
> > -- debconf-show failed
> >
>
