本文整理汇总了C++中QQuickItem::mapFromScene方法的典型用法代码示例。如果您正苦于以下问题：C++ QQuickItem::mapFromScene方法的具体用法？C++ QQuickItem::mapFromScene怎么用？C++ QQuickItem::mapFromScene使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QQuickItem的用法示例。
在下文中一共展示了QQuickItem::mapFromScene方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: transformMatrix
// Copied with minor modifications from qtdeclarative/src/quick/items/qquickwindow.cpp
QMouseEvent *TouchDispatcher::touchToMouseEvent(
QEvent::Type type, const QTouchEvent::TouchPoint &p,
ulong timestamp, Qt::KeyboardModifiers modifiers,
bool transformNeeded)
{
QQuickItem *item = m_targetItem.data();
// The touch point local position and velocity are not yet transformed.
QMouseEvent *me = new QMouseEvent(type, transformNeeded ? item->mapFromScene(p.scenePos()) : p.pos(),
p.scenePos(), p.screenPos(), Qt::LeftButton,
(type == QEvent::MouseButtonRelease ? Qt::NoButton : Qt::LeftButton),
modifiers);
me->setAccepted(true);
me->setTimestamp(timestamp);
QVector2D transformedVelocity = p.velocity();
if (transformNeeded) {
QQuickItemPrivate *itemPrivate = QQuickItemPrivate::get(item);
QMatrix4x4 transformMatrix(itemPrivate->windowToItemTransform());
transformedVelocity = transformMatrix.mapVector(p.velocity()).toVector2D();
}
// Add these later if needed:
//QGuiApplicationPrivate::setMouseEventCapsAndVelocity(me, event->device()->capabilities(), transformedVelocity);
//QGuiApplicationPrivate::setMouseEventSource(me, Qt::MouseEventSynthesizedByQt);
return me;
}示例2: collectItemsAt
QList<QQuickItem *> QQuickViewInspector::itemsAt(const QPointF &pos) const
{
QQuickItem *root = m_view->contentItem();
QList<QQuickItem *> resultList;
collectItemsAt(root, root->mapFromScene(pos), m_overlay,
resultList);
return resultList;
}示例3: itemAt
QQuickItem *QQuickViewInspector::topVisibleItemAt(const QPointF &pos) const
{
QQuickItem *root = m_view->contentItem();
return itemAt(root, root->mapFromScene(pos), m_overlay);
}