diff options
Diffstat (limited to 'src/gui/graphicsview/qgraphicsscene.cpp')
| -rw-r--r-- | src/gui/graphicsview/qgraphicsscene.cpp | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp index f8f8e98..6aab9df 100644 --- a/src/gui/graphicsview/qgraphicsscene.cpp +++ b/src/gui/graphicsview/qgraphicsscene.cpp @@ -329,7 +329,6 @@ static void _q_hoverFromMouseEvent(QGraphicsSceneHoverEvent *hover, const QGraph QGraphicsScenePrivate::QGraphicsScenePrivate() : changedSignalMask(0), indexMethod(QGraphicsScene::BspTreeIndex), - bspTreeDepth(0), lastItemCount(0), index(new QGraphicsSceneBspTree()), hasSceneRect(false), @@ -540,7 +539,9 @@ void QGraphicsScenePrivate::_q_updateIndex() // Determine whether we should regenerate the BSP tree. if (indexMethod == QGraphicsScene::BspTreeIndex) { - int depth = bspTreeDepth; + QGraphicsSceneBspTree *bspTree = qobject_cast<QGraphicsSceneBspTree*>(index); + Q_ASSERT(bspTree); + int depth = bspTree->depth; if (depth == 0) { int oldDepth = intmaxlog(lastItemCount); depth = intmaxlog(indexedItems.size()); @@ -2472,7 +2473,8 @@ QGraphicsSceneIndex* QGraphicsScene::sceneIndex() const int QGraphicsScene::bspTreeDepth() const { Q_D(const QGraphicsScene); - return d->bspTreeDepth; + QGraphicsSceneBspTree *bspTree = qobject_cast<QGraphicsSceneBspTree*>(d->index); + return bspTree ? bspTree->depth : 0; } void QGraphicsScene::setBspTreeDepth(int depth) { @@ -2485,7 +2487,13 @@ void QGraphicsScene::setBspTreeDepth(int depth) return; } - d->bspTreeDepth = depth; + QGraphicsSceneBspTree *bspTree = qobject_cast<QGraphicsSceneBspTree*>(d->index); + if (!bspTree) { + qWarning("QGraphicsScene::setBspTreeDepth: can not apply if indexing method is not BSP"); + return; + } + + bspTree->depth = depth; d->resetIndex(); } |