Enable fetching mime type from KIO slaves for thumbnail grids

CMakeLists.txt

@@ -80,6 +80,11 @@ if (KF5ConfigWidgets_VERSION VERSION_GREATER "5.56.0" AND ${Phonon4Qt5_VERSION}
         MESSAGE(STATUS "compile without foreach")
 endif()
 
+message(STATUS ${KF5KIO_VERSION})
+if (KF5KIO_VERSION VERSION_GREATER_EQUAL "5.82.0")
+    add_definitions(-DKIO_REQUEST_MIMETYPE)
+endif()
+
 ## Dependencies
 find_package(JPEG)
 set_package_properties(JPEG PROPERTIES URL "http://libjpeg.sourceforge.net/" DESCRIPTION "JPEG image manipulation support" TYPE REQUIRED)

lib/semanticinfo/sorteddirmodel.cpp

@@ -80,6 +80,11 @@ SortedDirModel::SortedDirModel(QObject* parent)
     d->mSourceModel = new SemanticInfoDirModel(this);
 #endif
     setSourceModel(d->mSourceModel);
+
+#ifdef KIO_REQUEST_MIMETYPE
+    d->mSourceModel->dirLister()->setRequestMimeTypeWhileListing(true);
+#endif
+
     d->mDelayedApplyFiltersTimer.setInterval(0);
     d->mDelayedApplyFiltersTimer.setSingleShot(true);
     connect(&d->mDelayedApplyFiltersTimer, &QTimer::timeout, this, &SortedDirModel::doApplyFilters);