diff options
Diffstat (limited to 'src/quicklayouts/qquicklayout.cpp')
| -rw-r--r-- | src/quicklayouts/qquicklayout.cpp | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/src/quicklayouts/qquicklayout.cpp b/src/quicklayouts/qquicklayout.cpp index 7d99c0c37e..74167db3e7 100644 --- a/src/quicklayouts/qquicklayout.cpp +++ b/src/quicklayouts/qquicklayout.cpp @@ -730,6 +730,18 @@ void QQuickLayout::componentComplete() d->m_isReady = true; } +void QQuickLayout::maybeSubscribeToBaseLineOffsetChanges(QQuickItem *item) +{ + QQuickLayoutAttached *info = attachedLayoutObject(item, false); + if (info) { + if (info->alignment() == Qt::AlignBaseline && static_cast<QQuickLayout*>(item->parentItem()) == this) { + qmlobject_connect(item, QQuickItem, SIGNAL(baselineOffsetChanged(qreal)), this, QQuickLayout, SLOT(invalidateSenderItem())); + } else { + qmlobject_disconnect(item, QQuickItem, SIGNAL(baselineOffsetChanged(qreal)), this, QQuickLayout, SLOT(invalidateSenderItem())); + } + } +} + void QQuickLayout::invalidate(QQuickItem * /*childItem*/) { Q_D(QQuickLayout); @@ -811,7 +823,7 @@ void QQuickLayout::itemChange(ItemChange change, const ItemChangeData &value) if (change == ItemChildAddedChange) { Q_D(QQuickLayout); QQuickItem *item = value.item; - qmlobject_connect(item, QQuickItem, SIGNAL(baselineOffsetChanged(qreal)), this, QQuickLayout, SLOT(invalidateSenderItem())); + maybeSubscribeToBaseLineOffsetChanges(item); QQuickItemPrivate::get(item)->addItemChangeListener(this, changeTypes); d->m_hasItemChangeListeners = true; qCDebug(lcQuickLayouts) << "ChildAdded" << item; @@ -819,7 +831,7 @@ void QQuickLayout::itemChange(ItemChange change, const ItemChangeData &value) invalidate(); } else if (change == ItemChildRemovedChange) { QQuickItem *item = value.item; - qmlobject_disconnect(item, QQuickItem, SIGNAL(baselineOffsetChanged(qreal)), this, QQuickLayout, SLOT(invalidateSenderItem())); + maybeSubscribeToBaseLineOffsetChanges(item); QQuickItemPrivate::get(item)->removeItemChangeListener(this, changeTypes); qCDebug(lcQuickLayouts) << "ChildRemoved" << item; if (isReady()) |