diff options
Diffstat (limited to 'src/gui/graphicsview')
| -rw-r--r-- | src/gui/graphicsview/qgraphicsscene.cpp | 78 |
1 files changed, 72 insertions, 6 deletions
diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp index 9a36d46..3280e86 100644 --- a/src/gui/graphicsview/qgraphicsscene.cpp +++ b/src/gui/graphicsview/qgraphicsscene.cpp @@ -5936,6 +5936,9 @@ void QGraphicsScenePrivate::gestureEventHandler(QGestureEvent *event) typedef QHash<QGraphicsObject *, QList<QGesture *> > GesturesPerItem; GesturesPerItem gesturesPerItem; + // gestures that are only supposed to propagate to parent items. + QSet<QGesture *> parentPropagatedGestures; + QSet<QGesture *> startedGestures; foreach (QGesture *gesture, allGestures) { QGraphicsObject *target = gestureTargets.value(gesture, 0); @@ -5946,6 +5949,10 @@ void QGraphicsScenePrivate::gestureEventHandler(QGestureEvent *event) startedGestures.insert(gesture); } else { gesturesPerItem[target].append(gesture); + Qt::GestureFlags flags = + target->QGraphicsItem::d_func()->gestureContext.value(gesture->gestureType()); + if (flags & Qt::IgnoredGesturesPropagateToParent) + parentPropagatedGestures.insert(gesture); } } @@ -6035,6 +6042,10 @@ void QGraphicsScenePrivate::gestureEventHandler(QGestureEvent *event) Q_ASSERT(!gestureTargets.contains(g)); gestureTargets.insert(g, receiver); gesturesPerItem[receiver].append(g); + Qt::GestureFlags flags = + receiver->QGraphicsItem::d_func()->gestureContext.value(g->gestureType()); + if (flags & Qt::IgnoredGesturesPropagateToParent) + parentPropagatedGestures.insert(g); } it = ignoredConflictedGestures.begin(); e = ignoredConflictedGestures.end(); @@ -6044,13 +6055,17 @@ void QGraphicsScenePrivate::gestureEventHandler(QGestureEvent *event) Q_ASSERT(!gestureTargets.contains(g)); gestureTargets.insert(g, receiver); gesturesPerItem[receiver].append(g); + Qt::GestureFlags flags = + receiver->QGraphicsItem::d_func()->gestureContext.value(g->gestureType()); + if (flags & Qt::IgnoredGesturesPropagateToParent) + parentPropagatedGestures.insert(g); } DEBUG() << "QGraphicsScenePrivate::gestureEventHandler:" << "Started gestures:" << normalGestures.keys() << "All gestures:" << gesturesPerItem.values(); - // deliver all events + // deliver all gesture events QList<QGesture *> alreadyIgnoredGestures; QHash<QGraphicsObject *, QSet<QGesture *> > itemIgnoredGestures; QList<QGraphicsObject *> targetItems = gesturesPerItem.keys(); @@ -6070,9 +6085,26 @@ void QGraphicsScenePrivate::gestureEventHandler(QGestureEvent *event) foreach(QGesture *g, alreadyIgnoredGestures) { QMap<Qt::GestureType, Qt::GestureFlags>::iterator contextit = gid->gestureContext.find(g->gestureType()); - bool deliver = contextit != gid->gestureContext.end() && - (g->state() == Qt::GestureStarted || - (contextit.value() & Qt::ReceivePartialGestures)); + bool deliver = false; + if (contextit != gid->gestureContext.end()) { + if (g->state() == Qt::GestureStarted) { + deliver = true; + } else { + const Qt::GestureFlags flags = contextit.value(); + if (flags & Qt::ReceivePartialGestures) { + QGraphicsObject *originalTarget = gestureTargets.value(g); + Q_ASSERT(originalTarget); + QGraphicsItemPrivate *otd = originalTarget->QGraphicsItem::d_func(); + const Qt::GestureFlags originalTargetFlags = otd->gestureContext.value(g->gestureType()); + if (originalTargetFlags & Qt::IgnoredGesturesPropagateToParent) { + // only deliver to parents of the original target item + deliver = item->isAncestorOf(originalTarget); + } else { + deliver = true; + } + } + } + } if (deliver) gestures += g; } @@ -6100,18 +6132,52 @@ void QGraphicsScenePrivate::gestureEventHandler(QGestureEvent *event) << "item has ignored the event, will propagate." << item << ignoredGestures; itemIgnoredGestures[item] += ignoredGestures; + alreadyIgnoredGestures = ignoredGestures.toList(); + + // remove gestures that are supposed to be propagated to + // parent items only. + QSet<QGesture *> parentGestures; + for (QSet<QGesture *>::iterator it = ignoredGestures.begin(); + it != ignoredGestures.end();) { + if (parentPropagatedGestures.contains(*it)) { + parentGestures.insert(*it); + it = ignoredGestures.erase(it); + } else { + ++it; + } + } + + QSet<QGraphicsObject *> itemsSet = targetItems.toSet(); + + foreach(QGesture *g, parentGestures) { + // get the original target for the gesture + QGraphicsItem *item = gestureTargets.value(g, 0); + Q_ASSERT(item); + const Qt::GestureType gestureType = g->gestureType(); + // iterate through parent items of the original gesture + // target item and collect potential receivers + do { + if (QGraphicsObject *obj = item->toGraphicsObject()) { + if (item->d_func()->gestureContext.contains(gestureType)) + itemsSet.insert(obj); + } + if (item->isPanel()) + break; + } while ((item = item->parentItem())); + } + QMap<Qt::GestureType, QGesture *> conflictedGestures; QList<QList<QGraphicsObject *> > itemsForConflictedGestures; QHash<QGesture *, QGraphicsObject *> normalGestures; getGestureTargets(ignoredGestures, viewport, &conflictedGestures, &itemsForConflictedGestures, &normalGestures); - QSet<QGraphicsObject *> itemsSet = targetItems.toSet(); for (int k = 0; k < itemsForConflictedGestures.size(); ++k) itemsSet += itemsForConflictedGestures.at(k).toSet(); + targetItems = itemsSet.toList(); + qSort(targetItems.begin(), targetItems.end(), qt_closestItemFirst); - alreadyIgnoredGestures = conflictedGestures.values(); DEBUG() << "QGraphicsScenePrivate::gestureEventHandler:" << "new targets:" << targetItems; i = -1; // start delivery again |