Fix potential endless loop in layout

[dolphin.git] / src / kitemviews / kitemlistview.cpp

diff --git a/src/kitemviews/kitemlistview.cpp b/src/kitemviews/kitemlistview.cpp
index c671a2e6e939500b787fd0d7c137f8bbc078f79e..52d85770549c0be87f6ac07dc1bdb445e40b4821 100644 (file)
--- a/src/kitemviews/kitemlistview.cpp
+++ b/src/kitemviews/kitemlistview.cpp
@@ -1880,6 +1880,19 @@ bool KItemListView::animateChangedItemCount(int changedItemCount) const
     return changedItemCount <= maximum * 2 / 3;
 }
 
+
+bool KItemListView::scrollBarRequired(const QSizeF& size) const
+{
+    const QSizeF oldSize = m_layouter->size();
+
+    m_layouter->setSize(size);
+    const qreal maxOffset = m_layouter->maximumScrollOffset();
+    m_layouter->setSize(oldSize);
+
+    return m_layouter->scrollOrientation() == Qt::Vertical ? maxOffset > size.height()
+                                                           : maxOffset > size.width();
+}
+
 int KItemListView::calculateAutoScrollingIncrement(int pos, int range, int oldInc)
 {
     int inc = 0;