I have project which use QGraphicsScene + QGraphicsView for QGraphicsItem organizing. All graphics items are movable and selectable.
The problem is: when I insert new QGraphicsItem on the scene and this item bigger then previous item, I can't select it by mouse.
From Qt documentation:
By default, all sibling items are stacked by insertion order (i.e., the first item you add >is drawn before the next item you add). If two items' Z values are different, then the item >with the highest Z value is drawn on top. When the Z values are the same, the insertion >order will decide the stacking order.
Question, How to change inserting order for graphics items ?
I try to subclass mousePressEvent for QGraphicsView and change inserting order with stackBefore() method help. If all items mixed together and overlap each other need to do a lot of clicks to select needed item.
void View::mousePressEvent ( QMouseEvent * event )
{
MyGraphicsGroup *last = 0;
QGraphicsItem *first = 0;
foreach( QGraphicsItem *item, items(event->pos()) )
{
if( !first ) first = item;
if( item->flags() & QGraphicsItem::ItemIsSelectable )
{
last = qgraphicsitem_cast<MyGraphicsGroup*>(item);
}
}
if( last )
{
first->stackBefore(last);
}
inherited::mousePressEvent( event );
}
