QQuickMultiPointHandler::eligiblePoints: use parent not target

If a PinchHandler for example is declared with target: null, it was
crashing here.  The eligible points are contained within the Item
within which the Handler is declared; it's OK to do a pinch gesture
within one Item but manipulate another Item instead.  In such a
case, the parent and target are different.  Alternatively, target
can be set to null, if the user is only interested in reacting to
the Handler's properties in some other way rather than directly
manipulating some target.

Change-Id: Ia077006be1285c242fe7ba71ea89850cd7717c7c
Reviewed-by: Jan Arve Sæther <jan-arve.saether@qt.io>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/quick/handlers/qquickmultipointhandler.cpp b/src/quick/handlers/qquickmultipointhandler.cpp
index 6cc7747e3a..41d8b228a1 100644
--- a/src/quick/handlers/qquickmultipointhandler.cpp
+++ b/src/quick/handlers/qquickmultipointhandler.cpp
@@ -80,7 +80,7 @@ QVector<QQuickEventPoint *> QQuickMultiPointHandler::eligiblePoints(QQuickPointe
 {
     QVector<QQuickEventPoint *> ret;
     int c = event->pointCount();
-    QRectF targetBounds = target()->mapRectToScene(target()->boundingRect())
+    QRectF parentBounds = parentItem()->mapRectToScene(parentItem()->boundingRect())
             .marginsAdded(QMarginsF(m_pointDistanceThreshold, m_pointDistanceThreshold, m_pointDistanceThreshold, m_pointDistanceThreshold));
     // If one or more points are newly pressed or released, all non-released points are candidates for this handler.
     // In other cases however, do not steal the grab: that is, if a point has a grabber,
@@ -93,7 +93,7 @@ QVector<QQuickEventPoint *> QQuickMultiPointHandler::eligiblePoints(QQuickPointe
             if (exclusiveGrabber && exclusiveGrabber != this)
                 continue;
         }
-        if (p->state() != QQuickEventPoint::Released && targetBounds.contains(p->scenePosition()))
+        if (p->state() != QQuickEventPoint::Released && parentBounds.contains(p->scenePosition()))
             ret << p;
     }
     return ret;