4 files changed, 87 insertions, 14 deletions

diff --git a/src/quick/items/qquickgridview.cpp b/src/quick/items/qquickgridview.cpp
index 916ae61cf5..27438bda14 100644
--- a/src/quick/items/qquickgridview.cpp
+++ b/src/quick/items/qquickgridview.cpp
@@ -1404,9 +1404,53 @@ void QQuickGridView::setHighlightFollowsCurrentItem(bool autoHighlight)
 
 /*!
   \qmlproperty int QtQuick::GridView::count
-  This property holds the number of items in the view.
+  This property holds the number of items in the model.
 */
 
+/*!
+    \qmlproperty bool QtQuick::GridView::reuseItems
+
+    This property enables you to reuse items that are instantiated
+    from the \l delegate. If set to \c false, any currently
+    pooled items are destroyed.
+
+    This property is \c false by default.
+
+    \since 5.15
+
+    \sa {Reusing items}, pooled(), reused()
+*/
+
+/*!
+    \qmlattachedsignal QtQuick::GridView::pooled()
+
+    This signal is emitted after an item has been added to the reuse
+    pool. You can use it to pause ongoing timers or animations inside
+    the item, or free up resources that cannot be reused.
+
+    This signal is emitted only if the \l reuseItems property is \c true.
+
+    \sa {Reusing items}, reuseItems, reused()
+*/
+
+/*!
+    \qmlattachedsignal QtQuick::GridView::reused()
+
+    This signal is emitted after an item has been reused. At this point, the
+    item has been taken out of the pool and placed inside the content view,
+    and the model properties such as \c index and \c row have been updated.
+
+    Other properties that are not provided by the model does not change when an
+    item is reused. You should avoid storing any state inside a delegate, but if
+    you do, manually reset that state on receiving this signal.
+
+    This signal is emitted when the item is reused, and not the first time the
+    item is created.
+
+    This signal is emitted only if the \l reuseItems property is \c true.
+
+    \sa {Reusing items}, reuseItems, pooled()
+*/
 
 /*!
   \qmlproperty Component QtQuick::GridView::highlight
diff --git a/src/quick/items/qquicklistview.cpp b/src/quick/items/qquicklistview.cpp
index 9e7a8f4803..6c822e62c1 100644
--- a/src/quick/items/qquicklistview.cpp
+++ b/src/quick/items/qquicklistview.cpp
@@ -1721,7 +1721,7 @@ void QQuickListViewPrivate::fixup(AxisData &data, qreal minExtent, qreal maxExte
             updateHighlight();
             bottomItem = currentItem;
         }
-        qreal pos;
+        qreal pos = 0;
         bool isInBounds = -position() > maxExtent && -position() <= minExtent;
 
         if (header && !topItem && isInBounds) {
@@ -1802,6 +1802,19 @@ void QQuickListViewPrivate::fixup(AxisData &data, qreal minExtent, qreal maxExte
             QQuickItemViewPrivate::fixup(data, minExtent, maxExtent);
             return;
         }
+        // If we have the CurrentLabelAtStart flag set, then we need to consider
+        // the section size while calculating the position
+        if (sectionCriteria
+            && (sectionCriteria->labelPositioning() & QQuickViewSection::CurrentLabelAtStart)
+            && currentSectionItem) {
+            auto sectionSize = (orient == QQuickListView::Vertical) ? currentSectionItem->height()
+                                                                    : currentSectionItem->width();
+            if (isContentFlowReversed())
+                pos += sectionSize;
+            else
+                pos -= sectionSize;
+        }
+
         pos = qBound(-minExtent, pos, -maxExtent);
 
         qreal dist = qAbs(data.move + pos);
@@ -2380,7 +2393,7 @@ QQuickListView::~QQuickListView()
 
 /*!
   \qmlproperty int QtQuick::ListView::count
-  This property holds the number of items in the view.
+  This property holds the number of items in the model.
 */
 
 /*!
diff --git a/src/quick/items/qquicktableview.cpp b/src/quick/items/qquicktableview.cpp
index 9b0334b851..490e89acad 100644
--- a/src/quick/items/qquicktableview.cpp
+++ b/src/quick/items/qquicktableview.cpp
@@ -3297,11 +3297,18 @@ void QQuickTableViewPrivate::syncSyncView()
         q->setColumnSpacing(syncView->columnSpacing());
         updateContentWidth();
 
-        if (syncView->leftColumn() != q->leftColumn()) {
-            // The left column is no longer the same as the left
-            // column in syncView. This requires a rebuild.
-            scheduledRebuildOptions |= QQuickTableViewPrivate::RebuildOption::CalculateNewTopLeftColumn;
-            scheduledRebuildOptions.setFlag(RebuildOption::ViewportOnly);
+        if (scheduledRebuildOptions & RebuildOption::LayoutOnly) {
+            if (syncView->leftColumn() != q->leftColumn()
+                    || syncView->d_func()->loadedTableOuterRect.left() != loadedTableOuterRect.left()) {
+                // The left column is no longer the same, or at the same pos, as the left column in
+                // syncView. This can happen if syncView did a relayout that caused its left column
+                // to be resized so small that it ended up outside the viewport. It can also happen
+                // if the syncView loaded and unloaded columns after the relayout. We therefore need
+                // to sync our own left column and pos to be the same, which we do by rebuilding the
+                // whole viewport instead of just doing a plain LayoutOnly.
+                scheduledRebuildOptions |= QQuickTableViewPrivate::RebuildOption::CalculateNewTopLeftColumn;
+                scheduledRebuildOptions.setFlag(RebuildOption::ViewportOnly);
+            }
         }
     }
 
@@ -3309,11 +3316,18 @@ void QQuickTableViewPrivate::syncSyncView()
         q->setRowSpacing(syncView->rowSpacing());
         updateContentHeight();
 
-        if (syncView->topRow() != q->topRow()) {
-            // The top row is no longer the same as the top
-            // row in syncView. This requires a rebuild.
-            scheduledRebuildOptions |= QQuickTableViewPrivate::RebuildOption::CalculateNewTopLeftRow;
-            scheduledRebuildOptions.setFlag(RebuildOption::ViewportOnly);
+        if (scheduledRebuildOptions & RebuildOption::LayoutOnly) {
+            if (syncView->topRow() != q->topRow()
+                    || syncView->d_func()->loadedTableOuterRect.top() != loadedTableOuterRect.top()) {
+                // The top row is no longer the same, or at the same pos, as the top row in
+                // syncView. This can happen if syncView did a relayout that caused its top row
+                // to be resized so small that it ended up outside the viewport. It can also happen
+                // if the syncView loaded and unloaded rows after the relayout. We therefore need
+                // to sync our own top row and pos to be the same, which we do by rebuilding the
+                // whole viewport instead of just doing a plain LayoutOnly.
+                scheduledRebuildOptions |= QQuickTableViewPrivate::RebuildOption::CalculateNewTopLeftRow;
+                scheduledRebuildOptions.setFlag(RebuildOption::ViewportOnly);
+            }
         }
     }
 
diff --git a/src/quick/items/qquicktext.cpp b/src/quick/items/qquicktext.cpp
index cef0dd2900..cdbcf46380 100644
--- a/src/quick/items/qquicktext.cpp
+++ b/src/quick/items/qquicktext.cpp
@@ -2462,8 +2462,10 @@ void QQuickText::geometryChange(const QRectF &newGeometry, const QRectF &oldGeom
             }
         }
     } else if (!heightChanged && widthMaximum) {
-        if (!qFuzzyIsNull(oldGeometry.width())) {
+        if (oldGeometry.width() > 0) {
             // no change to height, width is adequate and wasn't 0 before
+            // (old width could also be negative if it was 0 and the margins
+            // were set)
             goto geomChangeDone;
         }
     }