https://bugs.kde.org/show_bug.cgi?id=402172
--- Comment #18 from Igor Poboiko <igor.pobo...@gmail.com> ---
Git commit 899c0f7fa457d77f4b53f8540e22290da862d57d by Igor Poboiko.
Committed on 04/06/2020 at 22:03.
Pushed by poboiko into branch 'master'.
[KMainWindow] Invoke QIcon::setFallbackThemeName (later)
Summary:
This is alternative approach to {D22488} and commit 4214045 to KIconThemes.
Okular (and most - if not all - KDE apps) inherit KMainWindow, so KDE apps
should have breeze icons). KMainWindow ctor should be early enough so no icons
are yet loaded, but late enough so QGuiApplication is already inited.
This should be followed by reverting commit 4214045 in KIconThemes.
Original problem description (by @mart):
invoking QIcon::setFallbackThemeName at QCoreApplication ctor
with Q_COREAPP_STARTUP_FUNCTION breaks the internal status of
QIconLoader as it instantiates it before the QPlatformTheme,
but QIconLoader depends from QPlatformTheme to be already instantiated
otherwise it won't load correctly, thus breaking icon loading
in QtQuickControls2 styles, such as Material and Fusion
see https://bugreports.qt.io/browse/QTBUG-74252
Test Plan:
Don't have GTK3 QPA plugin, so cannot test it yet.
I would appreciate if someone helped me with testing :)
Reviewers: aacid, mart, broulik
Subscribers: mart, kde-frameworks-devel
Tags: #frameworks
Differential Revision: https://phabricator.kde.org/D29826
M +17 -0 src/kmainwindow.cpp
https://invent.kde.org/frameworks/kxmlgui/commit/899c0f7fa457d77f4b53f8540e22290da862d57d
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