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C++ QQuickItem::acceptedMouseButtons方法代码示例

本文整理汇总了C++中QQuickItem::acceptedMouseButtons方法的典型用法代码示例。如果您正苦于以下问题:C++ QQuickItem::acceptedMouseButtons方法的具体用法?C++ QQuickItem::acceptedMouseButtons怎么用?C++ QQuickItem::acceptedMouseButtons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QQuickItem的用法示例。


在下文中一共展示了QQuickItem::acceptedMouseButtons方法的1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: dispatchTouchBegin

void TouchDispatcher::dispatchTouchBegin(
            QTouchDevice *device,
            Qt::KeyboardModifiers modifiers,
            const QList<QTouchEvent::TouchPoint> &touchPoints,
            QWindow *window,
            ulong timestamp)
{
    Q_ASSERT(m_status == NoActiveTouch);
    QQuickItem *targetItem = m_targetItem.data();

    if (!targetItem->isEnabled() || !targetItem->isVisible()) {
        ugDebug("Cannot dispatch touch event to " << targetItem << " because it's disabled or invisible.");
        return;
    }

    // Map touch points to targetItem coordinates
    QList<QTouchEvent::TouchPoint> targetTouchPoints = touchPoints;
    transformTouchPoints(targetTouchPoints, QQuickItemPrivate::get(targetItem)->windowToItemTransform());

    QScopedPointer<QTouchEvent> touchEvent(
            createQTouchEvent(QEvent::TouchBegin, device, modifiers, targetTouchPoints, window, timestamp));


    ugDebug("dispatching " << qPrintable(touchEventToString(touchEvent.data()))
            << " to " << targetItem);
    QCoreApplication::sendEvent(targetItem, touchEvent.data());


    if (touchEvent->isAccepted()) {
        ugDebug("Item accepted the touch event.");
        setStatus(DeliveringTouchEvents);
    } else if (targetItem->acceptedMouseButtons() & Qt::LeftButton) {
        ugDebug("Item rejected the touch event. Trying a QMouseEvent");
        // NB: Arbitrarily chose the first touch point to emulate the mouse pointer
        QScopedPointer<QMouseEvent> mouseEvent(
                touchToMouseEvent(QEvent::MouseButtonPress, targetTouchPoints.at(0), timestamp,
                                  modifiers, false /* transformNeeded */));
        Q_ASSERT(targetTouchPoints.at(0).state() == Qt::TouchPointPressed);

        ugDebug("dispatching " << qPrintable(mouseEventToString(mouseEvent.data()))
                << " to " << m_targetItem.data());
        QCoreApplication::sendEvent(targetItem, mouseEvent.data());
        if (mouseEvent->isAccepted()) {
            ugDebug("Item accepted the QMouseEvent.");
            setStatus(DeliveringMouseEvents);
            m_touchMouseId = targetTouchPoints.at(0).id();

            if (checkIfDoubleClicked(timestamp)) {
                QScopedPointer<QMouseEvent> doubleClickEvent(
                        touchToMouseEvent(QEvent::MouseButtonDblClick, targetTouchPoints.at(0), timestamp,
                                          modifiers, false /* transformNeeded */));
                ugDebug("dispatching " << qPrintable(mouseEventToString(doubleClickEvent.data()))
                        << " to " << m_targetItem.data());
                QCoreApplication::sendEvent(targetItem, doubleClickEvent.data());
            }

        } else {
            ugDebug("Item rejected the QMouseEvent.");
            setStatus(TargetRejectedTouches);
        }
    } else {
        ugDebug("Item rejected the touch event and does not accept mouse buttons.");
        setStatus(TargetRejectedTouches);
    }
}
开发者ID:dumpster-of-things,项目名称:unity8,代码行数:65,代码来源:TouchDispatcher.cpp


注:本文中的QQuickItem::acceptedMouseButtons方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。