1 files changed, 11 insertions, 6 deletions

diff --git a/src/gui/widgets/qdockarealayout.cpp b/src/gui/widgets/qdockarealayout.cpp
index ec35c4f..dffec11 100644
--- a/src/gui/widgets/qdockarealayout.cpp
+++ b/src/gui/widgets/qdockarealayout.cpp
@@ -2262,7 +2262,7 @@ QRect QDockAreaLayoutInfo::tabContentRect() const
 ** QDockAreaLayout
 */
 
-QDockAreaLayout::QDockAreaLayout(QMainWindow *win)
+QDockAreaLayout::QDockAreaLayout(QMainWindow *win) : fallbackToSizeHints(true)
 {
     mainWindow = win;
     sep = win->style()->pixelMetric(QStyle::PM_DockWidgetSeparatorExtent, 0, win);
@@ -2349,6 +2349,9 @@ bool QDockAreaLayout::restoreState(QDataStream &stream, const QList<QDockWidget*
             for (int i = 0; i < 4; ++i)
                 corners[i] = static_cast<Qt::DockWidgetArea>(cornerData[i]);
         }
+
+        if (!testing)
+            fallbackToSizeHints = false;
     }
 
     return ok;
@@ -2585,7 +2588,7 @@ void QDockAreaLayout::getGrid(QVector<QLayoutStruct> *_ver_struct_list,
 {
     QSize center_hint(0, 0);
     QSize center_min(0, 0);
-    bool have_central = centralWidgetItem != 0 && !centralWidgetItem->isEmpty();
+    const bool have_central = centralWidgetItem != 0 && !centralWidgetItem->isEmpty();
     if (have_central) {
         center_hint = centralWidgetRect.size();
         if (!center_hint.isValid())
@@ -2604,33 +2607,35 @@ void QDockAreaLayout::getGrid(QVector<QLayoutStruct> *_ver_struct_list,
         center_rect.setBottom(rect.bottom() - docks[QInternal::BottomDock].rect.height() - sep);
 
     QSize left_hint = docks[QInternal::LeftDock].size();
-    if (left_hint.isNull())
+    if (left_hint.isNull() || fallbackToSizeHints)
         left_hint = docks[QInternal::LeftDock].sizeHint();
     QSize left_min = docks[QInternal::LeftDock].minimumSize();
     QSize left_max = docks[QInternal::LeftDock].maximumSize();
     left_hint = left_hint.boundedTo(left_max).expandedTo(left_min);
 
     QSize right_hint = docks[QInternal::RightDock].size();
-    if (right_hint.isNull())
+    if (right_hint.isNull() || fallbackToSizeHints)
         right_hint = docks[QInternal::RightDock].sizeHint();
     QSize right_min = docks[QInternal::RightDock].minimumSize();
     QSize right_max = docks[QInternal::RightDock].maximumSize();
     right_hint = right_hint.boundedTo(right_max).expandedTo(right_min);
 
     QSize top_hint = docks[QInternal::TopDock].size();
-    if (top_hint.isNull())
+    if (top_hint.isNull() || fallbackToSizeHints)
         top_hint = docks[QInternal::TopDock].sizeHint();
     QSize top_min = docks[QInternal::TopDock].minimumSize();
     QSize top_max = docks[QInternal::TopDock].maximumSize();
     top_hint = top_hint.boundedTo(top_max).expandedTo(top_min);
 
     QSize bottom_hint = docks[QInternal::BottomDock].size();
-    if (bottom_hint.isNull())
+    if (bottom_hint.isNull() || fallbackToSizeHints)
         bottom_hint = docks[QInternal::BottomDock].sizeHint();
     QSize bottom_min = docks[QInternal::BottomDock].minimumSize();
     QSize bottom_max = docks[QInternal::BottomDock].maximumSize();
     bottom_hint = bottom_hint.boundedTo(bottom_max).expandedTo(bottom_min);
 
+    fallbackToSizeHints = !have_central;
+
     if (_ver_struct_list != 0) {
         QVector<QLayoutStruct> &ver_struct_list = *_ver_struct_list;
         ver_struct_list.resize(3);