Don't apply an empty item-size to the layout

This fixes strange layout-issues when turning on/off previews in the
details-view.

CCBUG: 278899

1 files changed, 6 insertions, 6 deletions

diff --git a/src/kitemviews/kitemlistview.cpp b/src/kitemviews/kitemlistview.cpp
index ad4221394..81cfc1eed 100644
--- a/src/kitemviews/kitemlistview.cpp
+++ b/src/kitemviews/kitemlistview.cpp
@@ -141,14 +141,14 @@ void KItemListView::setItemSize(const QSizeF& itemSize)
     const bool emptySize = itemSize.isEmpty();
     if (emptySize) {
         updateVisibleRolesSizes();
-    }
-    setHeaderShown(emptySize);
-
-    if (itemSize.width() < previousSize.width() || itemSize.height() < previousSize.height()) {
-        prepareLayoutForIncreasedItemCount(itemSize, ItemSize);
     } else {
-        m_layouter->setItemSize(itemSize);
+        if (itemSize.width() < previousSize.width() || itemSize.height() < previousSize.height()) {
+            prepareLayoutForIncreasedItemCount(itemSize, ItemSize);
+        } else {
+            m_layouter->setItemSize(itemSize);
+        }
     }
+    setHeaderShown(emptySize);
 
     m_sizeHintResolver->clearCache();
     updateLayout();