C++ (Cpp) QGraphicsItem::collidingItems Examples

Example #1

File: mybox.cpp Project: github-jxm/QtCrearor_fast_learn

// 使用方块组中的每一个小方块来进行判断
bool BoxGroup::isColliding()
{
    QList<QGraphicsItem *> itemList = childItems();
    QGraphicsItem *item;
    foreach (item, itemList) {
        if(item->collidingItems().count() > 1)
            return true;
    }
    return false;
}

Example #2

File: mainwindow.cpp Project: Nobu19800/RMC

void MainWindow::sendToBack()
{
    if (scene->selectedItems().isEmpty())
        return;

    QGraphicsItem *selectedItem = scene->selectedItems().first();
    QList<QGraphicsItem *> overlapItems = selectedItem->collidingItems();

    qreal zValue = 0;
    foreach (QGraphicsItem *item, overlapItems) {
        if (item->zValue() <= zValue &&
            item->type() == JointItem::Type)
            zValue = item->zValue() - 0.1;
    }
    selectedItem->setZValue(zValue);
}