Qt::Orientations QSpacerItemProto::expandingDirections() const
{
QSpacerItem *item = qscriptvalue_cast<QSpacerItem*>(thisObject());
if (item)
return item->expandingDirections();
return (Qt::Orientations)0;
}
/*!
Sets the direction of this layout to \a direction.
*/
void QBoxLayout::setDirection(Direction direction)
{
Q_D(QBoxLayout);
if (d->dir == direction)
return;
if (horz(d->dir) != horz(direction)) {
//swap around the spacers (the "magic" bits)
//#### a bit yucky, knows too much.
//#### probably best to add access functions to spacerItem
//#### or even a QSpacerItem::flip()
for (int i = 0; i < d->list.size(); ++i) {
QBoxLayoutItem *box = d->list.at(i);
if (box->magic) {
QSpacerItem *sp = box->item->spacerItem();
if (sp) {
if (sp->expandingDirections() == Qt::Orientations(0) /*No Direction*/) {
//spacing or strut
QSize s = sp->sizeHint();
sp->changeSize(s.height(), s.width(),
horz(direction) ? QSizePolicy::Fixed:QSizePolicy::Minimum,
horz(direction) ? QSizePolicy::Minimum:QSizePolicy::Fixed);
} else {
//stretch
if (horz(direction))
sp->changeSize(0, 0, QSizePolicy::Expanding,
QSizePolicy::Minimum);
else
sp->changeSize(0, 0, QSizePolicy::Minimum,
QSizePolicy::Expanding);
}
}
}
}
}
d->dir = direction;
invalidate();
}
