diff options
| -rw-r--r-- | src/gui/graphicsview/qgraphicsanchorlayout_p.cpp | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/src/gui/graphicsview/qgraphicsanchorlayout_p.cpp b/src/gui/graphicsview/qgraphicsanchorlayout_p.cpp index a6f5992..137806a 100644 --- a/src/gui/graphicsview/qgraphicsanchorlayout_p.cpp +++ b/src/gui/graphicsview/qgraphicsanchorlayout_p.cpp @@ -1652,6 +1652,10 @@ QGraphicsAnchor *QGraphicsAnchorLayoutPrivate::getAnchor(QGraphicsLayoutItem *fi QGraphicsLayoutItem *secondItem, Qt::AnchorPoint secondEdge) { + // Do not expose internal anchors + if (firstItem == secondItem) + return 0; + const Orientation orientation = edgeOrientation(firstEdge); AnchorVertex *v1 = internalVertex(firstItem, firstEdge); AnchorVertex *v2 = internalVertex(secondItem, secondEdge); @@ -1659,8 +1663,16 @@ QGraphicsAnchor *QGraphicsAnchorLayoutPrivate::getAnchor(QGraphicsLayoutItem *fi QGraphicsAnchor *graphicsAnchor = 0; AnchorData *data = graph[orientation].edgeData(v1, v2); - if (data) - graphicsAnchor = acquireGraphicsAnchor(data); + if (data) { + // We could use "acquireGraphicsAnchor" here, but to avoid a regression where + // an internal anchor was wrongly exposed, I want to ensure no new + // QGraphicsAnchor instances are created by this call. + // This assumption must hold because anchors are either user-created (and already + // have their public object created), or they are internal (and must not reach + // this point). + Q_ASSERT(data->graphicsAnchor); + graphicsAnchor = data->graphicsAnchor; + } return graphicsAnchor; } |