diff options
Diffstat (limited to 'src/gui/graphicsview/qgraphicsscene.cpp')
| -rw-r--r-- | src/gui/graphicsview/qgraphicsscene.cpp | 207 |
1 files changed, 186 insertions, 21 deletions
diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp index c459d21..2748ab6 100644 --- a/src/gui/graphicsview/qgraphicsscene.cpp +++ b/src/gui/graphicsview/qgraphicsscene.cpp @@ -294,6 +294,7 @@ QGraphicsScenePrivate::QGraphicsScenePrivate() needSortTopLevelItems(true), holesInTopLevelSiblingIndex(false), topLevelSequentialOrdering(true), + scenePosDescendantsUpdatePending(false), stickyFocus(false), hasFocus(false), focusItem(0), @@ -488,6 +489,55 @@ void QGraphicsScenePrivate::_q_processDirtyItems() /*! \internal +*/ +void QGraphicsScenePrivate::setScenePosItemEnabled(QGraphicsItem *item, bool enabled) +{ + QGraphicsItem *p = item->d_ptr->parent; + while (p) { + p->d_ptr->scenePosDescendants = enabled; + p = p->d_ptr->parent; + } + if (!enabled && !scenePosDescendantsUpdatePending) { + scenePosDescendantsUpdatePending = true; + QMetaObject::invokeMethod(q_func(), "_q_updateScenePosDescendants", Qt::QueuedConnection); + } +} + +/*! + \internal +*/ +void QGraphicsScenePrivate::registerScenePosItem(QGraphicsItem *item) +{ + scenePosItems.insert(item); + setScenePosItemEnabled(item, true); +} + +/*! + \internal +*/ +void QGraphicsScenePrivate::unregisterScenePosItem(QGraphicsItem *item) +{ + scenePosItems.remove(item); + setScenePosItemEnabled(item, false); +} + +/*! + \internal +*/ +void QGraphicsScenePrivate::_q_updateScenePosDescendants() +{ + foreach (QGraphicsItem *item, scenePosItems) { + QGraphicsItem *p = item->d_ptr->parent; + while (p) { + p->d_ptr->scenePosDescendants = 1; + p = p->d_ptr->parent; + } + } + scenePosDescendantsUpdatePending = false; +} + +/*! + \internal Schedules an item for removal. This function leaves some stale indexes around in the BSP tree if called from the item's destructor; these will @@ -523,8 +573,19 @@ void QGraphicsScenePrivate::removeItemHelper(QGraphicsItem *item) widget->d_func()->fixFocusChainBeforeReparenting(0, 0); } + if (item->flags() & QGraphicsItem::ItemSendsScenePositionChanges) + unregisterScenePosItem(item); + item->d_func()->scene = 0; + //We need to remove all children first because they might use their parent + //attributes (e.g. sceneTransform). + if (!item->d_ptr->inDestructor) { + // Remove all children recursively + for (int i = 0; i < item->d_ptr->children.size(); ++i) + q->removeItem(item->d_ptr->children.at(i)); + } + // Unregister focus proxy. item->d_ptr->resetFocusProxy(); @@ -571,12 +632,6 @@ void QGraphicsScenePrivate::removeItemHelper(QGraphicsItem *item) ++iterator; } - if (!item->d_ptr->inDestructor) { - // Remove all children recursively - for (int i = 0; i < item->d_ptr->children.size(); ++i) - q->removeItem(item->d_ptr->children.at(i)); - } - if (item->isPanel() && item->isVisible() && item->panelModality() != QGraphicsItem::NonModal) leaveModal(item); @@ -691,6 +746,7 @@ void QGraphicsScenePrivate::setFocusItemHelper(QGraphicsItem *item, focusItem = 0; sendEvent(lastFocusItem, &event); +#ifndef QT_NO_IM if (lastFocusItem && (lastFocusItem->flags() & QGraphicsItem::ItemAcceptsInputMethod)) { // Reset any visible preedit text @@ -706,6 +762,7 @@ void QGraphicsScenePrivate::setFocusItemHelper(QGraphicsItem *item, views.at(i)->inputContext()->reset(); } } +#endif //QT_NO_IM } if (item) { @@ -1060,9 +1117,8 @@ bool QGraphicsScenePrivate::filterEvent(QGraphicsItem *item, QEvent *event) bool QGraphicsScenePrivate::sendEvent(QGraphicsItem *item, QEvent *event) { if (QGraphicsObject *object = item->toGraphicsObject()) { - QApplicationPrivate *qAppPriv = QApplicationPrivate::instance(); - if (qAppPriv->gestureManager) { - if (qAppPriv->gestureManager->filterEvent(object, event)) + if (qt_gestureManager) { + if (qt_gestureManager->filterEvent(object, event)) return true; } } @@ -2290,8 +2346,9 @@ void QGraphicsScene::clear() // NB! We have to clear the index before deleting items; otherwise the // index might try to access dangling item pointers. d->index->clear(); - const QList<QGraphicsItem *> items = d->topLevelItems; - qDeleteAll(items); + // NB! QGraphicsScenePrivate::unregisterTopLevelItem() removes items + while (!d->topLevelItems.isEmpty()) + delete d->topLevelItems.first(); Q_ASSERT(d->topLevelItems.isEmpty()); d->lastItemCount = 0; d->allItemsIgnoreHoverEvents = true; @@ -2537,6 +2594,9 @@ void QGraphicsScene::addItem(QGraphicsItem *item) } } + if (item->flags() & QGraphicsItem::ItemSendsScenePositionChanges) + d->registerScenePosItem(item); + // Ensure that newly added items that have subfocus set, gain // focus automatically if there isn't a focus item already. if (!d->focusItem && item != d->lastFocusItem && item->focusItem() == item) @@ -2823,18 +2883,20 @@ void QGraphicsScene::removeItem(QGraphicsItem *item) } /*! - Returns the scene's current focus item, or 0 if no item currently has - focus. + When the scene is active, this functions returns the scene's current focus + item, or 0 if no item currently has focus. When the scene is inactive, this + functions returns the item that will gain input focus when the scene becomes + active. The focus item receives keyboard input when the scene receives a key event. - \sa setFocusItem(), QGraphicsItem::hasFocus() + \sa setFocusItem(), QGraphicsItem::hasFocus(), isActive() */ QGraphicsItem *QGraphicsScene::focusItem() const { Q_D(const QGraphicsScene); - return d->focusItem; + return isActive() ? d->focusItem : d->lastFocusItem; } /*! @@ -4146,7 +4208,7 @@ static void _q_paintIntoCache(QPixmap *pix, QGraphicsItem *item, const QRegion & QRect br = pixmapExposed.boundingRect(); // Don't use subpixmap if we get a full update. - if (pixmapExposed.isEmpty() || (pixmapExposed.numRects() == 1 && br.contains(pix->rect()))) { + if (pixmapExposed.isEmpty() || (pixmapExposed.rectCount() == 1 && br.contains(pix->rect()))) { pix->fill(Qt::transparent); pixmapPainter.begin(pix); } else { @@ -4574,6 +4636,7 @@ void QGraphicsScenePrivate::drawSubtreeRecursive(QGraphicsItem *item, QPainter * if (itemHasChildren && itemClipsChildrenToShape) ENSURE_TRANSFORM_PTR; +#ifndef QT_NO_GRAPHICSEFFECT if (item->d_ptr->graphicsEffect && item->d_ptr->graphicsEffect->isEnabled()) { ENSURE_TRANSFORM_PTR; QGraphicsItemPaintInfo info(viewTransform, transformPtr, effectTransform, exposedRegion, widget, &styleOptionTmp, @@ -4596,7 +4659,9 @@ void QGraphicsScenePrivate::drawSubtreeRecursive(QGraphicsItem *item, QPainter * item->d_ptr->graphicsEffect->draw(painter, source); painter->setWorldTransform(restoreTransform); sourced->info = 0; - } else { + } else +#endif //QT_NO_GRAPHICSEFFECT + { draw(item, painter, viewTransform, transformPtr, exposedRegion, widget, opacity, effectTransform, wasDirtyParentSceneTransform, drawItem); } @@ -4765,10 +4830,12 @@ void QGraphicsScenePrivate::markDirty(QGraphicsItem *item, const QRectF &rect, b QGraphicsItem *p = item->d_ptr->parent; while (p) { p->d_ptr->dirtyChildren = 1; +#ifndef QT_NO_GRAPHICSEFFECT if (p->d_ptr->graphicsEffect && p->d_ptr->graphicsEffect->isEnabled()) { p->d_ptr->dirty = 1; p->d_ptr->fullUpdatePending = 1; } +#endif //QT_NO_GRAPHICSEFFECT p = p->d_ptr->parent; } } @@ -4910,7 +4977,7 @@ void QGraphicsScenePrivate::processDirtyItemsRecursive(QGraphicsItem *item, bool continue; } - if (item->d_ptr->paintedViewBoundingRectsNeedRepaint && !paintedViewBoundingRect.isEmpty()) { + if (item->d_ptr->paintedViewBoundingRectsNeedRepaint) { paintedViewBoundingRect.translate(viewPrivate->dirtyScrollOffset); if (!viewPrivate->updateRect(paintedViewBoundingRect)) paintedViewBoundingRect = QRect(-1, -1, -1, -1); // Outside viewport. @@ -5761,7 +5828,7 @@ void QGraphicsScenePrivate::gestureEventHandler(QGestureEvent *event) QWidget *viewport = event->widget(); if (!viewport) return; - QList<QGesture *> allGestures = event->allGestures(); + QList<QGesture *> allGestures = event->gestures(); DEBUG() << "QGraphicsScenePrivate::gestureEventHandler:" << "Delivering gestures:" << allGestures; @@ -5900,7 +5967,12 @@ void QGraphicsScenePrivate::gestureEventHandler(QGestureEvent *event) QGraphicsItemPrivate *gid = item->QGraphicsItem::d_func(); foreach(QGesture *g, alreadyIgnoredGestures) { - if (gid->gestureContext.contains(g->gestureType())) + 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)); + if (deliver) gestures += g; } if (gestures.isEmpty()) @@ -5913,8 +5985,12 @@ void QGraphicsScenePrivate::gestureEventHandler(QGestureEvent *event) sendEvent(item, &ev); QSet<QGesture *> ignoredGestures; foreach (QGesture *g, gestures) { - if (!ev.isAccepted() && !ev.isAccepted(g)) + if (!ev.isAccepted() && !ev.isAccepted(g)) { ignoredGestures.insert(g); + } else { + if (g->state() == Qt::GestureStarted) + gestureTargets[g] = item; + } } if (!ignoredGestures.isEmpty()) { // get a list of items under the (current) hotspot of each ignored @@ -5941,6 +6017,13 @@ void QGraphicsScenePrivate::gestureEventHandler(QGestureEvent *event) continue; } } + foreach (QGesture *g, startedGestures) { + if (g->gestureCancelPolicy() == QGesture::CancelAllInContext) { + DEBUG() << "lets try to cancel some"; + // find gestures in context in Qt::GestureStarted or Qt::GestureUpdated state and cancel them + cancelGesturesForChildren(g, event->widget()); + } + } // forget about targets for gestures that have ended foreach (QGesture *g, allGestures) { @@ -5955,6 +6038,88 @@ void QGraphicsScenePrivate::gestureEventHandler(QGestureEvent *event) } } +void QGraphicsScenePrivate::cancelGesturesForChildren(QGesture *original, QWidget *viewport) +{ + Q_ASSERT(original); + QGraphicsItem *originalItem = gestureTargets.value(original); + Q_ASSERT(originalItem); + + // iterate over all active gestures and for each find the owner + // if the owner is part of our sub-hierarchy, cancel it. + + QSet<QGesture *> canceledGestures; + QHash<QGesture *, QGraphicsObject *>::Iterator iter = gestureTargets.begin(); + while (iter != gestureTargets.end()) { + QGraphicsObject *item = iter.value(); + // note that we don't touch the gestures for our originalItem + if (item != originalItem && originalItem->isAncestorOf(item)) { + DEBUG() << " found a gesture to cancel" << iter.key(); + iter.key()->d_func()->state = Qt::GestureCanceled; + canceledGestures << iter.key(); + } + ++iter; + } + + // sort them per target item by cherry picking from almostCanceledGestures and delivering + QSet<QGesture *> almostCanceledGestures = canceledGestures; + QSet<QGesture *>::Iterator setIter; + while (!almostCanceledGestures.isEmpty()) { + QGraphicsObject *target = 0; + QSet<QGesture*> gestures; + setIter = almostCanceledGestures.begin(); + // sort per target item + while (setIter != almostCanceledGestures.end()) { + QGraphicsObject *item = gestureTargets.value(*setIter); + if (target == 0) + target = item; + if (target == item) { + gestures << *setIter; + setIter = almostCanceledGestures.erase(setIter); + } else { + ++setIter; + } + } + Q_ASSERT(target); + + QList<QGesture *> list = gestures.toList(); + QGestureEvent ev(list); + sendEvent(target, &ev); + + foreach (QGesture *g, list) { + if (ev.isAccepted() || ev.isAccepted(g)) + gestures.remove(g); + } + + foreach (QGesture *g, gestures) { + if (!g->hasHotSpot()) + continue; + + QPoint screenPos = g->hotSpot().toPoint(); + QList<QGraphicsItem *> items = itemsAtPosition(screenPos, QPointF(), viewport); + for (int j = 0; j < items.size(); ++j) { + QGraphicsObject *item = items.at(j)->toGraphicsObject(); + if (!item) + continue; + QGraphicsItemPrivate *d = item->QGraphicsItem::d_func(); + if (d->gestureContext.contains(g->gestureType())) { + QList<QGesture *> list; + list << g; + QGestureEvent ev(list); + sendEvent(item, &ev); + if (ev.isAccepted() || ev.isAccepted(g)) + break; // successfully delivered + } + } + } + } + + Q_ASSERT(qt_gestureManager); // it would be very odd if we got called without a manager. + for (setIter = canceledGestures.begin(); setIter != canceledGestures.end(); ++setIter) { + qt_gestureManager->recycle(*setIter); + gestureTargets.remove(*setIter); + } +} + QT_END_NAMESPACE #include "moc_qgraphicsscene.cpp" |