C++ (Cpp) QQml_setParent_noEvent Examples

Example #1

File: qquickloader.cpp Project: Drakey83/steamlink-sdk

void QQuickLoaderPrivate::setInitialState(QObject *obj)
{
    Q_Q(QQuickLoader);

    QQuickItem *item = qmlobject_cast<QQuickItem*>(obj);
    if (item) {
        // If the item doesn't have an explicit size, but the Loader
        // does, then set the item's size now before bindings are
        // evaluated, otherwise we will end up resizing the item
        // later and triggering any affected bindings/anchors.
        if (widthValid && !QQuickItemPrivate::get(item)->widthValid)
            item->setWidth(q->width());
        if (heightValid && !QQuickItemPrivate::get(item)->heightValid)
            item->setHeight(q->height());
        item->setParentItem(q);
    }
    if (obj) {
        QQml_setParent_noEvent(itemContext, obj);
        QQml_setParent_noEvent(obj, q);
        itemContext = 0;
    }

    if (initialPropertyValues.isUndefined())
        return;

    QQmlComponentPrivate *d = QQmlComponentPrivate::get(component);
    Q_ASSERT(d && d->engine);
    QV4::ExecutionEngine *v4 = qmlGlobalForIpv.engine();
    Q_ASSERT(v4);
    QV4::Scope scope(v4);
    QV4::ScopedValue ipv(scope, initialPropertyValues.value());
    d->initializeObjectWithInitialProperties(qmlGlobalForIpv, ipv, obj);
}

Example #2

File: qquicktextutil.cpp Project: richardmg/qtdeclarative

QT_BEGIN_NAMESPACE

QQuickItem *QQuickTextUtil::createCursor(
    QQmlComponent *component, QQuickItem *parent, const QRectF &rectangle, const char *className)
{
    QQuickItem *item = 0;
    if (component->isReady()) {
        QQmlContext *creationContext = component->creationContext();

        if (QObject *object = component->beginCreate(creationContext
                              ? creationContext
                              : qmlContext(parent))) {
            if ((item = qobject_cast<QQuickItem *>(object))) {
                QQml_setParent_noEvent(item, parent);
                item->setParentItem(parent);
                item->setPosition(rectangle.topLeft());
                item->setHeight(rectangle.height());
            } else {
                qmlInfo(parent) << tr("%1 does not support loading non-visual cursor delegates.")
                                .arg(QString::fromUtf8(className));
            }
            component->completeCreate();
            return item;
        }
    } else if (component->isLoading()) {
        QObject::connect(component, SIGNAL(statusChanged(QQmlComponent::Status)),
                         parent, SLOT(createCursor()), Qt::UniqueConnection);
        return item;
    }
    qmlInfo(parent, component->errors()) << tr("Could not load cursor delegate");
    return item;
}

Example #3

File: qquickstategroup.cpp Project: Drakey83/steamlink-sdk

void QQuickStateGroupPrivate::setCurrentStateInternal(const QString &state,
                                                   bool ignoreTrans)
{
    Q_Q(QQuickStateGroup);
    if (!componentComplete) {
        currentState = state;
        return;
    }

    if (applyingState) {
        qmlInfo(q) << "Can't apply a state change as part of a state definition.";
        return;
    }

    applyingState = true;

    QQuickTransition *transition = ignoreTrans ? 0 : findTransition(currentState, state);
    if (stateChangeDebug()) {
        qWarning() << this << "Changing state.  From" << currentState << ". To" << state;
        if (transition)
            qWarning() << "   using transition" << transition->fromState()
                       << transition->toState();
    }

    QQuickState *oldState = 0;
    if (!currentState.isEmpty()) {
        for (int ii = 0; ii < states.count(); ++ii) {
            if (states.at(ii)->name() == currentState) {
                oldState = states.at(ii);
                break;
            }
        }
    }

    currentState = state;
    emit q->stateChanged(currentState);

    QQuickState *newState = 0;
    for (int ii = 0; ii < states.count(); ++ii) {
        if (states.at(ii)->name() == currentState) {
            newState = states.at(ii);
            break;
        }
    }

    if (oldState == 0 || newState == 0) {
        if (!nullState) {
            nullState = new QQuickState;
            QQml_setParent_noEvent(nullState, q);
            nullState->setStateGroup(q);
        }
        if (!oldState) oldState = nullState;
        if (!newState) newState = nullState;
    }

    newState->apply(transition, oldState);
    applyingState = false;  //### consider removing this (don't allow state changes in transition)
}