void ContainerNode::parserAppendChild(PassRefPtr<Node> newChild) { ASSERT(newChild); ASSERT(!newChild->parentNode()); // Use appendChild if you need to handle reparenting (and want DOM mutation events). ASSERT(!newChild->isDocumentFragment()); ASSERT(!hasTagName(HTMLNames::templateTag)); if (document() != newChild->document()) document()->adoptNode(newChild.get(), ASSERT_NO_EXCEPTION); Node* last = m_lastChild; { NoEventDispatchAssertion assertNoEventDispatch; // FIXME: This method should take a PassRefPtr. appendChildToContainer(newChild.get(), this); treeScope()->adoptIfNeeded(newChild.get()); } newChild->updateAncestorConnectedSubframeCountForInsertion(); ChildListMutationScope(this).childAdded(newChild.get()); childrenChanged(true, last, 0, 1); ChildNodeInsertionNotifier(this).notify(newChild.get()); }
QGLView::QGLView(QQuickItem *parent) : QQuickPaintedItem(parent) , m_initialized(false) , m_modelProgram(0) , m_lineProgram(0) , m_textProgram(0) , m_projectionAspectRatio(1.0) , m_backgroundColor(QColor(Qt::black)) , m_pathEnabled(false) , m_selectionModeActive(false) , m_currentGlItem(NULL) , m_propertySignalMapper(new QSignalMapper(this)) , m_camera(new QGLCamera(this)) , m_light(new QGLLight(this)) { //setFlag(QQuickItem::ItemHasContents, true); connect(this, SIGNAL(windowChanged(QQuickWindow*)), this, SLOT(handleWindowChanged(QQuickWindow*))); // queue this connection to prevent trigger on destruction connect(this, SIGNAL(childrenChanged()), this, SLOT(updateChildren()), Qt::QueuedConnection); connect(m_propertySignalMapper, SIGNAL(mapped(QObject*)), this, SLOT(updateItem(QObject*))); //connect(this, SIGNAL(initialized()), this, SLOT(updateItems()), Qt::QueuedConnection); setRenderTarget(QQuickPaintedItem::InvertedYFramebufferObject); setMipmap(true); //setAntialiasing(true); }
void ContainerNode::parserInsertBefore(PassRefPtr<Node> newChild, Node* nextChild) { ASSERT(newChild); ASSERT(nextChild); ASSERT(nextChild->parentNode() == this); ASSERT(!newChild->isDocumentFragment()); #if ENABLE(TEMPLATE_ELEMENT) ASSERT(!hasTagName(HTMLNames::templateTag)); #endif if (nextChild->previousSibling() == newChild || nextChild == newChild) // nothing to do return; if (&document() != &newChild->document()) document().adoptNode(newChild.get(), ASSERT_NO_EXCEPTION); insertBeforeCommon(nextChild, newChild.get()); newChild->updateAncestorConnectedSubframeCountForInsertion(); ChildListMutationScope(this).childAdded(newChild.get()); childrenChanged(true, newChild->previousSibling(), nextChild, 1); ChildNodeInsertionNotifier(this).notify(newChild.get()); }
QDeclarativeGeoMap::QDeclarativeGeoMap(QQuickItem *parent) : QQuickItem(parent), m_plugin(0), m_serviceProvider(0), m_mappingManager(0), m_center(51.5073,-0.1277), //London city center m_activeMapType(0), m_gestureArea(new QQuickGeoMapGestureArea(this)), m_map(0), m_error(QGeoServiceProvider::NoError), m_zoomLevel(8.0), m_componentCompleted(false), m_mappingManagerInitialized(false), m_color(QColor::fromRgbF(0.9, 0.9, 0.9)), m_pendingFitViewport(false), m_validRegion(false) { setAcceptHoverEvents(false); setAcceptedMouseButtons(Qt::LeftButton); setFlags(QQuickItem::ItemHasContents | QQuickItem::ItemClipsChildrenToShape); setFiltersChildMouseEvents(true); connect(this, SIGNAL(childrenChanged()), this, SLOT(onMapChildrenChanged()), Qt::QueuedConnection); m_activeMapType = new QDeclarativeGeoMapType(QGeoMapType(QGeoMapType::NoMap, tr("No Map"), tr("No Map"), false, false, 0), this); }
void ContainerNode::parserInsertBefore(PassRefPtr<Node> newChild, Node* nextChild) { ASSERT(newChild); ASSERT(nextChild); ASSERT(nextChild->parentNode() == this); NodeVector targets; collectTargetNodes(newChild.get(), targets); if (targets.isEmpty()) return; if (nextChild->previousSibling() == newChild || nextChild == newChild) // nothing to do return; RefPtr<Node> next = nextChild; RefPtr<Node> nextChildPreviousSibling = nextChild->previousSibling(); for (NodeVector::const_iterator it = targets.begin(); it != targets.end(); ++it) { Node* child = it->get(); insertBeforeCommon(next.get(), child); childrenChanged(true, nextChildPreviousSibling.get(), nextChild, 1); ChildNodeInsertionNotifier(this).notify(child); } }
QDeclarativeGeoMapItemBase::QDeclarativeGeoMapItemBase(QQuickItem *parent) : QQuickItem(parent), map_(0), quickMap_(0) { connect(this, SIGNAL(childrenChanged()), this, SLOT(afterChildrenChanged())); }
bool ContainerNode::removeChild(Node* oldChild, ExceptionCode& ec) { // Check that this node is not "floating". // If it is, it can be deleted as a side effect of sending mutation events. ASSERT(refCount() || parentOrShadowHostNode()); RefPtr<Node> protect(this); ec = 0; // NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly. if (isReadOnlyNode()) { ec = NO_MODIFICATION_ALLOWED_ERR; return false; } // NOT_FOUND_ERR: Raised if oldChild is not a child of this node. if (!oldChild || oldChild->parentNode() != this) { ec = NOT_FOUND_ERR; return false; } RefPtr<Node> child = oldChild; document().removeFocusedNodeOfSubtree(child.get()); #if ENABLE(FULLSCREEN_API) document().removeFullScreenElementOfSubtree(child.get()); #endif // Events fired when blurring currently focused node might have moved this // child into a different parent. if (child->parentNode() != this) { ec = NOT_FOUND_ERR; return false; } willRemoveChild(child.get()); // Mutation events might have moved this child into a different parent. if (child->parentNode() != this) { ec = NOT_FOUND_ERR; return false; } { WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates; Node* prev = child->previousSibling(); Node* next = child->nextSibling(); removeBetween(prev, next, child.get()); childrenChanged(false, prev, next, -1); ChildNodeRemovalNotifier(this).notify(child.get()); } dispatchSubtreeModifiedEvent(); return child; }
void ContainerNode::notifyChildRemoved(Node& child, Node* previousSibling, Node* nextSibling, ChildChangeSource source) { ChildChange change; change.type = child.isElementNode() ? ElementRemoved : child.isTextNode() ? TextRemoved : NonContentsChildChanged; change.previousSiblingElement = (!previousSibling || previousSibling->isElementNode()) ? toElement(previousSibling) : ElementTraversal::previousSibling(previousSibling); change.nextSiblingElement = (!nextSibling || nextSibling->isElementNode()) ? toElement(nextSibling) : ElementTraversal::nextSibling(nextSibling); change.source = source; childrenChanged(change); }
void CQIllustratorShape:: addChild(CQIllustratorShape *child) { child->parent_ = this; shapes_.push_back(child); childrenChanged(); }
void CQIllustratorShape:: removeChild(CQIllustratorShape *child) { child->parent_ = 0; shapes_.remove(child); childrenChanged(); }
void ContainerNode::notifyChildInserted(Node& child, ChildChangeSource source) { ChildChange change; change.type = child.isElementNode() ? ElementInserted : child.isTextNode() ? TextInserted : NonContentsChildChanged; change.previousSiblingElement = ElementTraversal::previousSibling(&child); change.nextSiblingElement = ElementTraversal::nextSibling(&child); change.source = source; childrenChanged(change); }
void ContainerNode::parserRemoveChild(Node* oldChild) { ASSERT(oldChild); ASSERT(oldChild->parentNode() == this); Node* prev = oldChild->previousSibling(); Node* next = oldChild->nextSibling(); removeBetween(prev, next, oldChild); childrenChanged(true, prev, next, -1); ChildNodeRemovalNotifier(this).notify(oldChild); }
// this differs from other remove functions because it forcibly removes all the children, // regardless of read-only status or event exceptions, e.g. void ContainerNode::removeChildren() { if (!m_firstChild) return; // The container node can be removed from event handlers. RefPtr<ContainerNode> protect(this); // Exclude this node when looking for the focused or full screen Node since // only children will be removed. // FIXME: We should call these inside the loop below. Right now you can focus // a node with mutation events and it'll never get blured. document()->removeFocusedNodeOfSubtree(this, true); document()->removeFullScreenElementOfSubtree(this, true); ChildListMutationScope mutation(this); NodeVector removedChildren; { WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates; while (RefPtr<Node> child = m_firstChild) { // Dispatch synchronous events like mutation and unload events. dispatchChildRemovalEvents(child.get()); ChildFrameDisconnector(child.get()).disconnect(); // FIXME: In theory this can fire focus events when the selection // changes, but there's no obvious way to test it. document()->nodeWillBeRemoved(child.get()); // If an event moved the child start over. if (child != m_firstChild) continue; mutation.willRemoveChild(child.get()); child->notifyMutationObserversNodeWillDetach(); removeBetween(0, child->nextSibling(), child.get()); removedChildren.append(child.release()); } // FIXME: We could avoid walking all the children twice by calling // notify inside the loop and childrenChanged after but that would mean // calling childrenChanged in a different order than all other methods. // Figure out if this is safe. childrenChanged(false, 0, 0, -static_cast<int>(removedChildren.size())); for (size_t i = 0; i < removedChildren.size(); ++i) ChildNodeRemovalNotifier(this).notify(removedChildren[i].get()); } dispatchSubtreeModifiedEvent(); }
bool ChildrenChangeEventFilter::eventFilter(QObject * /*object*/, QEvent *event) { switch (event->type()) { case QEvent::ChildAdded: case QEvent::ChildRemoved: { QChildEvent *childEvent = static_cast<QChildEvent*>(event); emit childrenChanged(childEvent->child()); break; } default: break; } return false; }
void ContainerNode::parserAppendChild(PassRefPtr<Node> newChild) { ASSERT(newChild); ASSERT(!newChild->parentNode()); // Use appendChild if you need to handle reparenting (and want DOM mutation events). Node* last = m_lastChild; { NoEventDispatchAssertion assertNoEventDispatch; // FIXME: This method should take a PassRefPtr. appendChildToContainer(newChild.get(), this); treeScope()->adoptIfNeeded(newChild.get()); } childrenChanged(true, last, 0, 1); ChildNodeInsertionNotifier(this).notify(newChild.get()); }
// this differs from other remove functions because it forcibly removes all the children, // regardless of read-only status or event exceptions, e.g. void ContainerNode::removeChildren() { if (!m_firstChild) return; // The container node can be removed from event handlers. Ref<ContainerNode> protect(*this); // exclude this node when looking for removed focusedNode since only children will be removed document().removeFocusedNodeOfSubtree(this, true); #if ENABLE(FULLSCREEN_API) document().removeFullScreenElementOfSubtree(this, true); #endif // Do any prep work needed before actually starting to detach // and remove... e.g. stop loading frames, fire unload events. willRemoveChildren(*this); NodeVector removedChildren; { WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates; { NoEventDispatchAssertion assertNoEventDispatch; removedChildren.reserveInitialCapacity(countChildNodes()); while (RefPtr<Node> n = m_firstChild) { removedChildren.append(*m_firstChild); removeBetween(0, m_firstChild->nextSibling(), *m_firstChild); } } ChildChange change = { AllChildrenRemoved, nullptr, nullptr, ChildChangeSourceAPI }; childrenChanged(change); for (size_t i = 0; i < removedChildren.size(); ++i) ChildNodeRemovalNotifier(*this).notify(removedChildren[i].get()); } if (document().svgExtensions()) { Element* shadowHost = this->shadowHost(); if (!shadowHost || !shadowHost->hasTagName(SVGNames::useTag)) document().accessSVGExtensions()->rebuildElements(); } dispatchSubtreeModifiedEvent(); }
void ContainerNode::parserRemoveChild(Node* oldChild) { ASSERT(oldChild); ASSERT(oldChild->parentNode() == this); ASSERT(!oldChild->isDocumentFragment()); Node* prev = oldChild->previousSibling(); Node* next = oldChild->nextSibling(); oldChild->updateAncestorConnectedSubframeCountForRemoval(); ChildListMutationScope(this).willRemoveChild(oldChild); oldChild->notifyMutationObserversNodeWillDetach(); removeBetween(prev, next, oldChild); childrenChanged(true, prev, next, -1); ChildNodeRemovalNotifier(this).notify(oldChild); }
// this differs from other remove functions because it forcibly removes all the children, // regardless of read-only status or event exceptions, e.g. void ContainerNode::removeChildren() { if (!m_firstChild) return; // The container node can be removed from event handlers. RefPtr<ContainerNode> protect(this); // exclude this node when looking for removed focusedNode since only children will be removed document().removeFocusedNodeOfSubtree(this, true); #if ENABLE(FULLSCREEN_API) document().removeFullScreenElementOfSubtree(this, true); #endif // Do any prep work needed before actually starting to detach // and remove... e.g. stop loading frames, fire unload events. willRemoveChildren(protect.get()); NodeVector removedChildren; { WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates; { NoEventDispatchAssertion assertNoEventDispatch; removedChildren.reserveInitialCapacity(childNodeCount()); while (RefPtr<Node> n = m_firstChild) { removedChildren.append(m_firstChild); removeBetween(0, m_firstChild->nextSibling(), m_firstChild); } } childrenChanged(false, 0, 0, -static_cast<int>(removedChildren.size())); for (size_t i = 0; i < removedChildren.size(); ++i) ChildNodeRemovalNotifier(this).notify(removedChildren[i].get()); } dispatchSubtreeModifiedEvent(); }
QT_BEGIN_NAMESPACE /*! \qmltype Map \instantiates QDeclarativeGeoMap \inqmlmodule QtLocation \ingroup qml-QtLocation5-maps \since Qt Location 5.0 \brief The Map type displays a map. The Map type is used to display a map or image of the Earth, with the capability to also display interactive objects tied to the map's surface. There are a variety of different ways to visualize the Earth's surface in a 2-dimensional manner, but all of them involve some kind of projection: a mathematical relationship between the 3D coordinates (latitude, longitude and altitude) and 2D coordinates (X and Y in pixels) on the screen. Different sources of map data can use different projections, and from the point of view of the Map type, we treat these as one replaceable unit: the Map plugin. A Map plugin consists of a data source, as well as all other details needed to display its data on-screen. The current Map plugin in use is contained in the \l plugin property of the Map item. In order to display any image in a Map item, you will need to set this property. See the \l Plugin type for a description of how to retrieve an appropriate plugin for use. The geographic region displayed in the Map item is referred to as its viewport, and this is defined by the properties \l center, and \l zoomLevel. The \l center property contains a \l {coordinate} specifying the center of the viewport, while \l zoomLevel controls the scale of the map. See each of these properties for further details about their values. When the map is displayed, each possible geographic coordinate that is visible will map to some pixel X and Y coordinate on the screen. To perform conversions between these two, Map provides the \l toCoordinate and \l toScreenPosition functions, which are of general utility. \section2 Map Objects Map related objects can be declared within the body of a Map object in Qt Quick and will automatically appear on the Map. To add objects programmatically, first be sure they are created with the Map as their parent (for example in an argument to Component::createObject), and then call the \l addMapItem method on the Map. A corresponding \l removeMapItem method also exists to do the opposite and remove an object from the Map. Moving Map objects around, resizing them or changing their shape normally does not involve any special interaction with Map itself -- changing these details about a map object will automatically update the display. \section2 Interaction The Map type includes support for pinch and flick gestures to control zooming and panning. These are enabled by default, and available at any time by using the \l gesture object. The actual GestureArea is constructed specially at startup and cannot be replaced or destroyed. Its properties can be altered, however, to control its behavior. \section2 Performance Maps are rendered using OpenGL (ES) and the Qt Scene Graph stack, and as a result perform quite well where GL accelerated hardware is available. For "online" Map plugins, network bandwidth and latency can be major contributors to the user's perception of performance. Extensive caching is performed to mitigate this, but such mitigation is not always perfect. For "offline" plugins, the time spent retrieving the stored geographic data and rendering the basic map features can often play a dominant role. Some offline plugins may use hardware acceleration themselves to (partially) avert this. In general, large and complex Map items such as polygons and polylines with large numbers of vertices can have an adverse effect on UI performance. Further, more detailed notes on this are in the documentation for each map item type. \section2 Example Usage The following snippet shows a simple Map and the necessary Plugin type to use it. The map is centered near Brisbane, Australia, zoomed out to the minimum zoom level, with gesture interaction enabled. \code Plugin { id: somePlugin // code here to choose the plugin as necessary } Map { id: map plugin: somePlugin center { latitude: -27 longitude: 153 } zoomLevel: map.minimumZoomLevel gesture.enabled: true } \endcode \image api-map.png */ QDeclarativeGeoMap::QDeclarativeGeoMap(QQuickItem *parent) : QQuickItem(parent), plugin_(0), serviceProvider_(0), mappingManager_(0), zoomLevel_(8.0), center_(51.5073,-0.1277), //London city center activeMapType_(0), componentCompleted_(false), mappingManagerInitialized_(false), touchTimer_(-1), map_(0) { QLOC_TRACE0; setAcceptHoverEvents(false); setAcceptedMouseButtons(Qt::LeftButton | Qt::MidButton | Qt::RightButton); setFlags(QQuickItem::ItemHasContents | QQuickItem::ItemClipsChildrenToShape); setFiltersChildMouseEvents(true); connect(this, SIGNAL(childrenChanged()), this, SLOT(onMapChildrenChanged()), Qt::QueuedConnection); // Create internal flickable and pinch area. gestureArea_ = new QDeclarativeGeoMapGestureArea(this, this); }
void Trainer::breed() { std::sort(agents.begin(), agents.end(), fitness_comparison()); emit agentsChanged(agents); children.clear(); AgentVector selected_agents = selection(); AgentVector selected_agents_one; AgentVector selected_agents_two; for (unsigned int i = 0; i < selected_agents.size(); i++) { if (i % 2) selected_agents_one.push_back(selected_agents[i]); else selected_agents_two.push_back(selected_agents[i]); } unsigned int min_size = (selected_agents_one.size() < selected_agents_two.size()) ? selected_agents_one.size() : selected_agents_two.size(); if (min_size != 0) { Agent *braut = selected_agents.at(0); for (unsigned int i = 0; i < min_size; i++) { Agent *child_one = crossover(*braut, *selected_agents_one[i], rand() % 2); Agent *child_two = crossover(*selected_agents_two[i], *selected_agents_one[i], rand() % 2); // Agent *child_three = crossover(*selected_agents_one[i], *selected_agents_two[i], rand() % 2); // if (child_three) // children.push_back(child_three); if (child_one && braut != selected_agents_one[i]) { if (rand() % 100 < 10) { Genome genome_one = child_one->getGenome(); mutate(genome_one); child_one->setGenome(genome_one); } children.push_back(child_one); } if (child_two) { if (rand() % 100 > 80) { Genome genome_two = child_two->getGenome(); mutate(genome_two); child_two->setGenome(genome_two); } children.push_back(child_two); } } std::sort(children.begin(), children.end(), fitness_comparison()); Agent *b = children.at(0); b->setName("Brautern"); emit childrenChanged(children); } agents.clear(); agents = children; }
// this differs from other remove functions because it forcibly removes all the children, // regardless of read-only status or event exceptions, e.g. void ContainerNode::removeChildren() { if (!m_firstChild) return; // The container node can be removed from event handlers. RefPtr<ContainerNode> protect(this); // exclude this node when looking for removed focusedNode since only children will be removed document()->removeFocusedNodeOfSubtree(this, true); #if ENABLE(FULLSCREEN_API) document()->removeFullScreenElementOfSubtree(this, true); #endif // Do any prep work needed before actually starting to detach // and remove... e.g. stop loading frames, fire unload events. willRemoveChildren(protect.get()); Vector<RefPtr<Node>, 10> removedChildren; { WidgetHierarchyUpdatesSuspensionScope suspendWidgetHierarchyUpdates; NoEventDispatchAssertion assertNoEventDispatch; removedChildren.reserveInitialCapacity(childNodeCount()); while (RefPtr<Node> n = m_firstChild) { Node* next = n->nextSibling(); // Remove the node from the tree before calling detach or removedFromDocument (4427024, 4129744). // removeChild() does this after calling detach(). There is no explanation for // this discrepancy between removeChild() and its optimized version removeChildren(). n->setPreviousSibling(0); n->setNextSibling(0); n->setParentOrHostNode(0); document()->adoptIfNeeded(n.get()); m_firstChild = next; if (n == m_lastChild) m_lastChild = 0; removedChildren.append(n.release()); } size_t removedChildrenCount = removedChildren.size(); size_t i; // Detach the nodes only after properly removed from the tree because // a. detaching requires a proper DOM tree (for counters and quotes for // example) and during the previous loop the next sibling still points to // the node being removed while the node being removed does not point back // and does not point to the same parent as its next sibling. // b. destroying Renderers of standalone nodes is sometimes faster. for (i = 0; i < removedChildrenCount; ++i) { Node* removedChild = removedChildren[i].get(); if (removedChild->attached()) removedChild->detach(); } childrenChanged(false, 0, 0, -static_cast<int>(removedChildrenCount)); for (i = 0; i < removedChildrenCount; ++i) ChildNodeRemovalNotifier(this).notify(removedChildren[i].get()); } dispatchSubtreeModifiedEvent(); }