commit 584eba1fec6a47f4aae69afbdec7fc761bb68d29
author Igor Poboiko <igor.poboiko@gmail.com> Fri May 22 16:32:27 2020 +0300
committer Katarina Behrens <bubli@bubli.org> Wed Jun 24 11:32:56 2020 +0200
tree 646fd434d3056b49f4694924c7d2bd2691f06263
parent 6038fa25aa38bb1523ecd9e5adac3b96cbc52ffd

tdf#127138: Fix detection of system icon theme with Qt5/KF5

The title is self-explanatory.
The QIcon::themeName() actually uses Qt Platform Abstraction plugins, i.e.
it's aware of KDE preferred icon theme via Qt Plasma integration module.

(note that it is _currently_ broken due to KDE bug
https://bugs.kde.org/show_bug.cgi?id=402172, which causes themeName to
return empty string; however, it's being worked on)

Change-Id: Ibc7cf9ee9ae73b492046219487760561d7d2ea45
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/94691
Tested-by: Jenkins
Reviewed-by: Katarina Behrens <bubli@bubli.org>

vcl/qt5/Qt5Frame.cxx

diff --git a/vcl/qt5/Qt5Frame.cxx b/vcl/qt5/Qt5Frame.cxx
index daa930f..ed3368ac3 100644
--- a/vcl/qt5/Qt5Frame.cxx
+++ b/vcl/qt5/Qt5Frame.cxx
@@ -1130,6 +1130,9 @@
    }
    style.SetMenuBarHighlightTextColor(style.GetMenuHighlightTextColor());

    // Icon theme
    style.SetPreferredIconTheme(toOUString(QIcon::themeName()));

    // Scroll bar size
    style.SetScrollBarSize(QApplication::style()->pixelMetric(QStyle::PM_ScrollBarExtent));
    style.SetMinThumbSize(QApplication::style()->pixelMetric(QStyle::PM_ScrollBarSliderMin));