void contextSetObject(QQmlContext_ *context, QObject_ *value)
{
QQmlContext *qcontext = reinterpret_cast<QQmlContext *>(context);
QObject *qvalue = reinterpret_cast<QObject *>(value);
// Give qvalue an engine reference if it doesn't yet have one.
if (!qmlEngine(qvalue)) {
QQmlEngine::setContextForObject(qvalue, qcontext->engine()->rootContext());
}
qcontext->setContextObject(qvalue);
}
void AbstractDataPlugin::handleViewportChange( const ViewportParams *viewport )
{
QList<AbstractDataPluginItem*> orphane = d->m_delegateInstances.keys();
QList<AbstractDataPluginItem*> const items = d->m_model->items( viewport, numberOfItems() );
foreach( AbstractDataPluginItem* item, items ) {
qreal x, y;
Marble::GeoDataCoordinates const coordinates = item->coordinate();
bool const visible = viewport->screenCoordinates( coordinates.longitude(), coordinates.latitude(), x, y );
if ( !d->m_delegateInstances.contains( item ) ) {
if ( !visible ) {
// We don't have, but don't need it either. Shouldn't happen though as the model checks for it already.
continue;
}
// Create a new QML object instance using the delegate as the factory. The original
// data plugin item is set as the context object, i.e. all its properties are available
// to QML directly with their names
QQmlContext *context = new QQmlContext( qmlContext( d->m_delegate ) );
context->setContextObject( item );
QList<QByteArray> const dynamicProperties = item->dynamicPropertyNames();
foreach( const QByteArray &property, dynamicProperties ) {
context->setContextProperty( property, item->property( property ) );
}
QObject* component = d->m_delegate->create( context );
QQuickItem* newItem = qobject_cast<QQuickItem*>( component );
QGraphicsItem* graphicsItem = qobject_cast<QGraphicsItem*>( component );
if ( graphicsItem && newItem ) {
graphicsItem->setParentItem( d->m_delegateParent );
}
if ( newItem ) {
d->m_delegateInstances[item] = newItem;
} else {
mDebug() << "Failed to create delegate";
continue;
}
} else if ( !visible ) {
