From 5b9d7f05aa369c07c2f498280d8a8b9c81f7aff1 Mon Sep 17 00:00:00 2001 From: "Eduardo M. Fleury" Date: Fri, 27 Nov 2009 11:14:23 -0300 Subject: QGAL: Prevent internal anchors from being exposed by QGAL::anchor() Adding check to prevent the structural layout anchors as well as those internal to items, from being exposed through the public API. These checks also ensure no QGraphicsAnchor instances will be created for those anchors. Signed-off-by: Eduardo M. Fleury Reviewed-by: Artur Duque de Souza --- src/gui/graphicsview/qgraphicsanchorlayout_p.cpp | 16 ++++++++++++++-- 1 file 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; } -- cgit v0.12