SEXP qt_qupdate_QGraphicsItem(SEXP rself) {
QGraphicsItem *item = unwrapQGraphicsItem(rself, QGraphicsItem);
// HACK: purge the cache before updating. QGraphicsScene does not
// seem to update the cache properly when there are multiple
// views. This is not very efficient, but usually one is not
// caching items that are frequently updated.
QGraphicsItem::CacheMode mode = item->cacheMode();
item->setCacheMode(QGraphicsItem::NoCache);
item->setCacheMode(mode);
item->update();
return rself;
}
SEXP qt_qupdate_QGraphicsScene(SEXP rself) {
QGraphicsScene *scene = unwrapQObject(rself, QGraphicsScene);
QList<QGraphicsItem *> items = scene->items();
for (int i = 0; i < items.size(); i++) {
QGraphicsItem *item = items[i];
QGraphicsItem::CacheMode mode = item->cacheMode();
item->setCacheMode(QGraphicsItem::NoCache);
item->setCacheMode(mode);
}
scene->update();
return rself;
}
SEXP qt_qcacheMode_QGraphicsItem(SEXP rself) {
QGraphicsItem *item = unwrapQGraphicsItem(rself, QGraphicsItem);
return ScalarInteger(item->cacheMode());
}
