diff options
Diffstat (limited to 'src/gui/graphicsview/qgraphicsscene.cpp')
| -rw-r--r-- | src/gui/graphicsview/qgraphicsscene.cpp | 206 |
1 files changed, 140 insertions, 66 deletions
diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp index 8777cdc..54d47fa 100644 --- a/src/gui/graphicsview/qgraphicsscene.cpp +++ b/src/gui/graphicsview/qgraphicsscene.cpp @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** @@ -428,21 +428,39 @@ void QGraphicsScenePrivate::unregisterTopLevelItem(QGraphicsItem *item) */ void QGraphicsScenePrivate::_q_polishItems() { - QSet<QGraphicsItem *>::Iterator it; + if (unpolishedItems.isEmpty()) + return; + const QVariant booleanTrueVariant(true); - while (!unpolishedItems.isEmpty()) { - it = unpolishedItems.begin(); - QGraphicsItem *item = *it; - unpolishedItems.erase(it); - if (!item->d_ptr->explicitlyHidden) { + QGraphicsItem *item = 0; + QGraphicsItemPrivate *itemd = 0; + const int oldUnpolishedCount = unpolishedItems.count(); + + for (int i = 0; i < oldUnpolishedCount; ++i) { + item = unpolishedItems.at(i); + if (!item) + continue; + itemd = item->d_ptr.data(); + itemd->pendingPolish = false; + if (!itemd->explicitlyHidden) { item->itemChange(QGraphicsItem::ItemVisibleChange, booleanTrueVariant); item->itemChange(QGraphicsItem::ItemVisibleHasChanged, booleanTrueVariant); } - if (item->isWidget()) { + if (itemd->isWidget) { QEvent event(QEvent::Polish); QApplication::sendEvent((QGraphicsWidget *)item, &event); } } + + if (unpolishedItems.count() == oldUnpolishedCount) { + // No new items were added to the vector. + unpolishedItems.clear(); + } else { + // New items were appended; keep them and remove the old ones. + unpolishedItems.remove(0, oldUnpolishedCount); + unpolishedItems.squeeze(); + QMetaObject::invokeMethod(q_ptr, "_q_polishItems", Qt::QueuedConnection); + } } void QGraphicsScenePrivate::_q_processDirtyItems() @@ -569,14 +587,10 @@ void QGraphicsScenePrivate::removeItemHelper(QGraphicsItem *item) item->d_ptr->clearSubFocus(); - if (!item->d_ptr->inDestructor && item == tabFocusFirst) { - QGraphicsWidget *widget = static_cast<QGraphicsWidget *>(item); - widget->d_func()->fixFocusChainBeforeReparenting(0, 0); - } - if (item->flags() & QGraphicsItem::ItemSendsScenePositionChanges) unregisterScenePosItem(item); + QGraphicsScene *oldScene = item->d_func()->scene; item->d_func()->scene = 0; //We need to remove all children first because they might use their parent @@ -587,6 +601,11 @@ void QGraphicsScenePrivate::removeItemHelper(QGraphicsItem *item) q->removeItem(item->d_ptr->children.at(i)); } + if (!item->d_ptr->inDestructor && item == tabFocusFirst) { + QGraphicsWidget *widget = static_cast<QGraphicsWidget *>(item); + widget->d_func()->fixFocusChainBeforeReparenting(0, oldScene, 0); + } + // Unregister focus proxy. item->d_ptr->resetFocusProxy(); @@ -595,7 +614,7 @@ void QGraphicsScenePrivate::removeItemHelper(QGraphicsItem *item) if (parentItem->scene()) { Q_ASSERT_X(parentItem->scene() == q, "QGraphicsScene::removeItem", "Parent item's scene is different from this item's scene"); - item->d_ptr->setParentItemHelper(0); + item->setParentItem(0); } } else { unregisterTopLevelItem(item); @@ -613,6 +632,19 @@ void QGraphicsScenePrivate::removeItemHelper(QGraphicsItem *item) if (item == lastActivePanel) lastActivePanel = 0; + // Cancel active touches + { + QMap<int, QGraphicsItem *>::iterator it = itemForTouchPointId.begin(); + while (it != itemForTouchPointId.end()) { + if (it.value() == item) { + sceneCurrentTouchPoints.remove(it.key()); + it = itemForTouchPointId.erase(it); + } else { + ++it; + } + } + } + // Disable selectionChanged() for individual items ++selectionChanging; int oldSelectedItemsSize = selectedItems.size(); @@ -621,7 +653,12 @@ void QGraphicsScenePrivate::removeItemHelper(QGraphicsItem *item) selectedItems.remove(item); hoverItems.removeAll(item); cachedItemsUnderMouse.removeAll(item); - unpolishedItems.remove(item); + if (item->d_ptr->pendingPolish) { + const int unpolishedIndex = unpolishedItems.indexOf(item); + if (unpolishedIndex != -1) + unpolishedItems[unpolishedIndex] = 0; + item->d_ptr->pendingPolish = false; + } resetDirtyItem(item); //We remove all references of item from the sceneEventFilter arrays @@ -1118,8 +1155,9 @@ bool QGraphicsScenePrivate::filterEvent(QGraphicsItem *item, QEvent *event) bool QGraphicsScenePrivate::sendEvent(QGraphicsItem *item, QEvent *event) { if (QGraphicsObject *object = item->toGraphicsObject()) { - if (qt_gestureManager) { - if (qt_gestureManager->filterEvent(object, event)) + QGestureManager *gestureManager = QApplicationPrivate::instance()->gestureManager; + if (gestureManager) { + if (gestureManager->filterEvent(object, event)) return true; } } @@ -1547,7 +1585,10 @@ QGraphicsScene::QGraphicsScene(qreal x, qreal y, qreal width, qreal height, QObj } /*! - Destroys the QGraphicsScene object. + Removes and deletes all items from the scene object + before destroying the scene object. The scene object + is removed from the application's global scene list, + and it is removed from all associated views. */ QGraphicsScene::~QGraphicsScene() { @@ -1914,7 +1955,7 @@ QList<QGraphicsItem *> QGraphicsScene::items(const QRectF &rectangle, Qt::ItemSe \since 4.3 This convenience function is equivalent to calling items(QRectF(\a x, \a y, \a w, \a h), \a mode). - + This function is deprecated and returns incorrect results if the scene contains items that ignore transformations. Use the overload that takes a QTransform instead. @@ -2429,23 +2470,26 @@ void QGraphicsScene::destroyItemGroup(QGraphicsItemGroup *group) } /*! - Adds or moves the item \a item and all its childen to the scene. + Adds or moves the \a item and all its childen to this scene. + This scene takes ownership of the \a item. If the item is visible (i.e., QGraphicsItem::isVisible() returns true), QGraphicsScene will emit changed() once control goes back to the event loop. - If the item is already in a different scene, it will first be removed from - its old scene, and then added to this scene as a top-level. + If the item is already in a different scene, it will first be + removed from its old scene, and then added to this scene as a + top-level. - QGraphicsScene will send ItemSceneChange notifications to \a item while - it is added to the scene. If item does not currently belong to a scene, only one - notification is sent. If it does belong to scene already (i.e., it is - moved to this scene), QGraphicsScene will send an addition notification as - the item is removed from its previous scene. + QGraphicsScene will send ItemSceneChange notifications to \a item + while it is added to the scene. If item does not currently belong + to a scene, only one notification is sent. If it does belong to + scene already (i.e., it is moved to this scene), QGraphicsScene + will send an addition notification as the item is removed from its + previous scene. - If the item is a panel, the scene is active, and there is no active panel - in the scene, then the item will be activated. + If the item is a panel, the scene is active, and there is no + active panel in the scene, then the item will be activated. \sa removeItem(), addEllipse(), addLine(), addPath(), addPixmap(), addRect(), addText(), addWidget(), {QGraphicsItem#Sorting}{Sorting} @@ -2457,12 +2501,12 @@ void QGraphicsScene::addItem(QGraphicsItem *item) qWarning("QGraphicsScene::addItem: cannot add null item"); return; } - if (item->scene() == this) { + if (item->d_ptr->scene == this) { qWarning("QGraphicsScene::addItem: item has already been added to this scene"); return; } // Remove this item from its existing scene - if (QGraphicsScene *oldScene = item->scene()) + if (QGraphicsScene *oldScene = item->d_ptr->scene) oldScene->removeItem(item); // Notify the item that its scene is changing, and allow the item to @@ -2471,15 +2515,20 @@ void QGraphicsScene::addItem(QGraphicsItem *item) qVariantFromValue<QGraphicsScene *>(this))); QGraphicsScene *targetScene = qVariantValue<QGraphicsScene *>(newSceneVariant); if (targetScene != this) { - if (targetScene && item->scene() != targetScene) + if (targetScene && item->d_ptr->scene != targetScene) targetScene->addItem(item); return; } + if (d->unpolishedItems.isEmpty()) + QMetaObject::invokeMethod(this, "_q_polishItems", Qt::QueuedConnection); + d->unpolishedItems.append(item); + item->d_ptr->pendingPolish = true; + // Detach this item from its parent if the parent's scene is different // from this scene. - if (QGraphicsItem *itemParent = item->parentItem()) { - if (itemParent->scene() != this) + if (QGraphicsItem *itemParent = item->d_ptr->parent) { + if (itemParent->d_ptr->scene != this) item->setParentItem(0); } @@ -2509,7 +2558,7 @@ void QGraphicsScene::addItem(QGraphicsItem *item) d->enableMouseTrackingOnViews(); } #ifndef QT_NO_CURSOR - if (d->allItemsUseDefaultCursor && item->hasCursor()) { + if (d->allItemsUseDefaultCursor && item->d_ptr->hasCursor) { d->allItemsUseDefaultCursor = false; if (d->allItemsIgnoreHoverEvents) // already enabled otherwise d->enableMouseTrackingOnViews(); @@ -2517,7 +2566,7 @@ void QGraphicsScene::addItem(QGraphicsItem *item) #endif //QT_NO_CURSOR // Enable touch events if the item accepts touch events. - if (d->allItemsIgnoreTouchEvents && item->acceptTouchEvents()) { + if (d->allItemsIgnoreTouchEvents && item->d_ptr->acceptTouchEvents) { d->allItemsIgnoreTouchEvents = false; d->enableTouchEventsOnViews(); } @@ -2550,16 +2599,14 @@ void QGraphicsScene::addItem(QGraphicsItem *item) } // Add all children recursively - foreach (QGraphicsItem *child, item->children()) - addItem(child); + item->d_ptr->ensureSortedChildren(); + for (int i = 0; i < item->d_ptr->children.size(); ++i) + addItem(item->d_ptr->children.at(i)); // Resolve font and palette. item->d_ptr->resolveFont(d->font.resolve()); item->d_ptr->resolvePalette(d->palette.resolve()); - if (d->unpolishedItems.isEmpty()) - QMetaObject::invokeMethod(this, "_q_polishItems", Qt::QueuedConnection); - d->unpolishedItems.insert(item); // Reenable selectionChanged() for individual items --d->selectionChanging; @@ -2593,7 +2640,7 @@ void QGraphicsScene::addItem(QGraphicsItem *item) } } - if (item->flags() & QGraphicsItem::ItemSendsScenePositionChanges) + if (item->d_ptr->flags & QGraphicsItem::ItemSendsScenePositionChanges) d->registerScenePosItem(item); // Ensure that newly added items that have subfocus set, gain @@ -3740,10 +3787,10 @@ void QGraphicsScene::helpEvent(QGraphicsSceneHelpEvent *helpEvent) bool QGraphicsScenePrivate::itemAcceptsHoverEvents_helper(const QGraphicsItem *item) const { - return (!item->isBlockedByModalPanel() && - (item->acceptHoverEvents() - || (item->isWidget() - && static_cast<const QGraphicsWidget *>(item)->d_func()->hasDecoration()))); + return (item->d_ptr->acceptsHover + || (item->d_ptr->isWidget + && static_cast<const QGraphicsWidget *>(item)->d_func()->hasDecoration())) + && !item->isBlockedByModalPanel(); } /*! @@ -4233,7 +4280,6 @@ static void _q_paintIntoCache(QPixmap *pix, QGraphicsItem *item, const QRegion & if (!subPix.isNull()) { // Blit the subpixmap into the main pixmap. pixmapPainter.begin(pix); - pixmapPainter.setCompositionMode(QPainter::CompositionMode_Source); pixmapPainter.setClipRegion(pixmapExposed); pixmapPainter.drawPixmap(br.topLeft(), subPix); pixmapPainter.end(); @@ -4658,10 +4704,36 @@ void QGraphicsScenePrivate::drawSubtreeRecursive(QGraphicsItem *item, QPainter * painter->setWorldTransform(*transformPtr); painter->setOpacity(opacity); - if (sourced->lastEffectTransform != painter->worldTransform()) { + if (sourced->currentCachedSystem() != Qt::LogicalCoordinates + && sourced->lastEffectTransform != painter->worldTransform()) + { + bool unclipped = false; + if (sourced->lastEffectTransform.type() <= QTransform::TxTranslate + && painter->worldTransform().type() <= QTransform::TxTranslate) + { + QRectF itemRect = item->boundingRect(); + if (!item->d_ptr->children.isEmpty()) + itemRect |= item->childrenBoundingRect(); + + QRectF oldSourceRect = sourced->lastEffectTransform.mapRect(itemRect); + QRectF newSourceRect = painter->worldTransform().mapRect(itemRect); + + QRect oldEffectRect = sourced->paddedEffectRect(sourced->currentCachedSystem(), sourced->currentCachedMode(), oldSourceRect); + QRect newEffectRect = sourced->paddedEffectRect(sourced->currentCachedSystem(), sourced->currentCachedMode(), newSourceRect); + + QRect deviceRect(0, 0, painter->device()->width(), painter->device()->height()); + if (deviceRect.contains(oldEffectRect) && deviceRect.contains(newEffectRect)) { + sourced->setCachedOffset(newEffectRect.topLeft()); + unclipped = true; + } + } + sourced->lastEffectTransform = painter->worldTransform(); - sourced->invalidateCache(); + + if (!unclipped) + sourced->invalidateCache(QGraphicsEffectSourcePrivate::TransformChanged); } + item->d_ptr->graphicsEffect->draw(painter); painter->setWorldTransform(restoreTransform); sourced->info = 0; @@ -4760,7 +4832,8 @@ void QGraphicsScenePrivate::draw(QGraphicsItem *item, QPainter *painter, const Q } void QGraphicsScenePrivate::markDirty(QGraphicsItem *item, const QRectF &rect, bool invalidateChildren, - bool force, bool ignoreOpacity, bool removingItemFromScene) + bool force, bool ignoreOpacity, bool removingItemFromScene, + bool updateBoundingRect) { Q_ASSERT(item); if (updateAll) @@ -4831,17 +4904,8 @@ void QGraphicsScenePrivate::markDirty(QGraphicsItem *item, const QRectF &rect, b if (ignoreOpacity) item->d_ptr->ignoreOpacity = 1; - 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; - } + if (!updateBoundingRect) + item->d_ptr->markParentDirty(); } static inline bool updateHelper(QGraphicsViewPrivate *view, QGraphicsItemPrivate *item, @@ -5073,6 +5137,10 @@ void QGraphicsScenePrivate::processDirtyItemsRecursive(QGraphicsItem *item, bool \snippet doc/src/snippets/graphicssceneadditemsnippet.cpp 0 + \obsolete Since Qt 4.6, this function is not called anymore unless + the QGraphicsView::IndirectPainting flag is given as an Optimization + flag. + \sa drawBackground(), drawForeground() */ void QGraphicsScene::drawItems(QPainter *painter, @@ -5680,17 +5748,22 @@ bool QGraphicsScenePrivate::sendTouchBeginEvent(QGraphicsItem *origin, QTouchEve touchEvent->setAccepted(acceptTouchEvents); res = acceptTouchEvents && sendEvent(item, touchEvent); eventAccepted = touchEvent->isAccepted(); - item->d_ptr->acceptedTouchBeginEvent = (res && eventAccepted); + if (itemForTouchPointId.value(touchEvent->touchPoints().first().id()) == 0) { + // item was deleted + item = 0; + } else { + item->d_ptr->acceptedTouchBeginEvent = (res && eventAccepted); + } touchEvent->spont = false; if (res && eventAccepted) { // the first item to accept the TouchBegin gets an implicit grab. for (int i = 0; i < touchEvent->touchPoints().count(); ++i) { const QTouchEvent::TouchPoint &touchPoint = touchEvent->touchPoints().at(i); - itemForTouchPointId[touchPoint.id()] = item; + itemForTouchPointId[touchPoint.id()] = item; // can be zero } break; } - if (item->isPanel()) + if (item && item->isPanel()) break; } @@ -6121,9 +6194,10 @@ void QGraphicsScenePrivate::cancelGesturesForChildren(QGesture *original, QWidge } } - Q_ASSERT(qt_gestureManager); // it would be very odd if we got called without a manager. + QGestureManager *gestureManager = QApplicationPrivate::instance()->gestureManager; + Q_ASSERT(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); + gestureManager->recycle(*setIter); gestureTargets.remove(*setIter); } } |