C++ TouchPoint::setPos方法代码示例

QTouchEvent::TouchPoint makeTouchPointFromMouseEvent(QMouseEvent *event, Qt::TouchPointState state)
{
    QTouchEvent::TouchPoint newPoint;

#if defined ( QT_4 )
    newPoint.setPos(event->posF());
    newPoint.setScenePos(event->globalPos());
    newPoint.setScreenPos(event->globalPos());
#elif defined ( QT_5 )
    newPoint.setPos(event->localPos());
    newPoint.setScenePos(event->windowPos());
    newPoint.setScreenPos(event->screenPos());
#endif

    newPoint.setState(state);
    newPoint.setId(0);
    return newPoint;
}

/*!
    \internal
*/
QTouchEvent::TouchPoint makeTouchPointFromMouseEvent(QMouseEvent *event, Qt::TouchPointState state)
{
    // this is only partially filled. But since it is only partially used it works
    // more robust would be to store a list of QPointFs rather than TouchPoints
    QTouchEvent::TouchPoint newPoint;
    newPoint.setPos(event->localPos());
    newPoint.setScenePos(event->windowPos());
    newPoint.setScreenPos(event->screenPos());
    newPoint.setState(state);
    newPoint.setId(0);
    return newPoint;
}

bool RenderableWebEntityItem::buildWebSurface(EntityTreeRenderer* renderer) {
    if (_currentWebCount >= MAX_CONCURRENT_WEB_VIEWS) {
        qWarning() << "Too many concurrent web views to create new view";
        return false;
    }
    qDebug() << "Building web surface";

    ++_currentWebCount;
    // Save the original GL context, because creating a QML surface will create a new context
    QOpenGLContext * currentContext = QOpenGLContext::currentContext();
    QSurface * currentSurface = currentContext->surface();
    _webSurface = new OffscreenQmlSurface();
    _webSurface->create(currentContext);
    _webSurface->setBaseUrl(QUrl::fromLocalFile(PathUtils::resourcesPath() + "/qml/controls/"));
    _webSurface->load("WebView.qml");
    _webSurface->resume();
    _webSurface->getRootItem()->setProperty("url", _sourceUrl);
    _webSurface->getRootContext()->setContextProperty("desktop", QVariant());
    _connection = QObject::connect(_webSurface, &OffscreenQmlSurface::textureUpdated, [&](GLuint textureId) {
        _texture = textureId;
    });
    // Restore the original GL context
    currentContext->makeCurrent(currentSurface);

    auto forwardPointerEvent = [=](const EntityItemID& entityItemID, const PointerEvent& event) {
        if (entityItemID == getID()) {
            handlePointerEvent(event);
        }
    };
    _mousePressConnection = QObject::connect(renderer, &EntityTreeRenderer::mousePressOnEntity, forwardPointerEvent);
    _mouseReleaseConnection = QObject::connect(renderer, &EntityTreeRenderer::mouseReleaseOnEntity, forwardPointerEvent);
    _mouseMoveConnection = QObject::connect(renderer, &EntityTreeRenderer::mouseMoveOnEntity, forwardPointerEvent);
    _hoverLeaveConnection = QObject::connect(renderer, &EntityTreeRenderer::hoverLeaveEntity, [=](const EntityItemID& entityItemID, const PointerEvent& event) {
        if (this->_pressed && this->getID() == entityItemID) {
            // If the user mouses off the entity while the button is down, simulate a touch end.
            QTouchEvent::TouchPoint point;
            point.setId(event.getID());
            point.setState(Qt::TouchPointReleased);
            glm::vec2 windowPos = event.getPos2D() * (METERS_TO_INCHES * _dpi);
            QPointF windowPoint(windowPos.x, windowPos.y);
            point.setPos(windowPoint);
            QList<QTouchEvent::TouchPoint> touchPoints;
            touchPoints.push_back(point);
            QTouchEvent* touchEvent = new QTouchEvent(QEvent::TouchEnd, nullptr, Qt::NoModifier, Qt::TouchPointReleased, touchPoints);
            QCoreApplication::postEvent(_webSurface->getWindow(), touchEvent);
        }
    });
    return true;
}

void MScenePrivate::touchPointMirrorMousePosToPointPos(QTouchEvent::TouchPoint &point, const QGraphicsSceneMouseEvent *event)
{
    Q_Q(MScene);

    if (q->views().size() > 0) {
        QPointF windowPos(q->views().at(0)->pos());
        QSize resolution = MDeviceProfile::instance()->resolution();
        QPointF centerPoint(resolution.width() / 2, resolution.height() / 2);

        QPointF mirrorPoint = centerPoint + (centerPoint - event->screenPos() + windowPos);

        point.setPos(mirrorPoint);
        point.setScenePos(mirrorPoint);
        point.setScreenPos(mirrorPoint + windowPos);
    }
}

// generateTouchEvent - iterates through existing touches and creates a QTouchEvent.
// For the primary finger, it also creates a mouse event if the location has move
void QPAHiddTpHandler::generateTouchEvent()
{
	if (m_touches.empty())
		return;
	
	QList<QTouchEvent::TouchPoint> touchPoints;
	QList<HiddTouch>::const_iterator it;

	QWidget* widget = QWidget::mouseGrabber();
	if (!widget) {
		QWidget* window = QApplication::topLevelAt(m_lastTouchDown);
		if (window)
			widget = window->childAt(window->mapFromGlobal(m_lastTouchDown));
	}

	if (!widget) {
		QPoint dummyPt(10, 10);
		QWidget* window = QApplication::topLevelAt(dummyPt);
		if (window)
			widget = window->childAt(window->mapFromGlobal(dummyPt));
	}
	if(!widget) {
	    widget = QApplication::activeWindow();
	    if(QApplication::focusWidget())
	    {
		widget = QApplication::focusWidget();
	    }
	}
	Qt::KeyboardModifiers keyboardModifiers = QApplication::keyboardModifiers();

	if (widget && m_sendPenCancel) {
		//printf("Mouse Up for Pen Cancel: %d, %d\n", m_penCancelPoint.x(), m_penCancelPoint.y());
		QMouseEvent ev(QEvent::MouseButtonRelease, m_penCancelPoint, m_penCancelPoint, true,
				Qt::LeftButton, Qt::NoButton, keyboardModifiers);
		qt_sendSpontaneousEvent((QObject*) widget, &ev);							
		m_sendPenCancel = false;
		m_penCancelPoint = QPoint (0,0);
	}
	
	for (it = m_touches.begin(); it != m_touches.end(); ++it) {
		QTouchEvent::TouchPoint touchPoint;
		touchPoint.setId(it->id);
		touchPoint.setPos(QPoint(it->x, it->y));

		touchPoint.setScreenPos(touchPoint.pos());
		switch (it->state) {
		case QPAHiddTpHandler::FingerDown:
			touchPoint.setState(Qt::TouchPointPressed);
			break;
		case QPAHiddTpHandler::FingerUp:
			touchPoint.setState(Qt::TouchPointReleased);
			break;
		case QPAHiddTpHandler::FingerMove:
			touchPoint.setState(Qt::TouchPointMoved);
			break;
		default:
			touchPoint.setState(Qt::TouchPointStationary);
			break;
		}

		if (it->isPrimary) {
			touchPoint.setState(touchPoint.state() | Qt::TouchPointPrimary);
		}

		touchPoints.append(touchPoint);
//		printf ("%s: adding touch point id %d (hiddId %llu) for pos (%d, %d) primary %d\n", 
//			__func__, it->id, it->hiddId, it->x, it->y, it->isPrimary);

		if (it->isPrimary) {

			QPoint mousePos = QPoint(it->x, it->y);
			if (widget) {
				
				if (it->state == QPAHiddTpHandler::FingerDown) {

					uint32_t currTime = m_touchTimer.elapsed();
					int dx = mousePos.x() - m_mousePress.x();
					int dy = mousePos.y() - m_mousePress.y();
					
					if (((currTime - m_mousePressTime) < (uint32_t) QApplication::doubleClickInterval()) &&
						((dx * dx + dy * dy) <= 144)) {

						//printf("Mouse Double Click: %d, %d\n", mousePos.x(), mousePos.y());
						QMouseEvent ev(QEvent::MouseButtonDblClick, mousePos, mousePos,
									   Qt::LeftButton, Qt::LeftButton, keyboardModifiers);
						qt_sendSpontaneousEvent((QObject*) widget, &ev);

						m_mousePressTime = 0;
					}
					else {

						//printf("Mouse Down: %d, %d\n", mousePos.x(), mousePos.y());
						QMouseEvent ev(QEvent::MouseButtonPress, mousePos, mousePos,
									   Qt::LeftButton, Qt::LeftButton, keyboardModifiers);
						qt_sendSpontaneousEvent((QObject*) widget, &ev);

						m_mousePress = mousePos;

//.........这里部分代码省略.........

void Web3DOverlay::handlePointerEventAsTouch(const PointerEvent& event) {
    if (!_webSurface) {
        return;
    }

    //do not send secondary button events to tablet
    if (event.getButton() == PointerEvent::SecondaryButton ||
        //do not block composed events
        event.getButtons() == PointerEvent::SecondaryButton) {
        return;
    }


    QPointF windowPoint;
    {
        glm::vec2 windowPos = event.getPos2D() * (METERS_TO_INCHES * _dpi);
        windowPoint = QPointF(windowPos.x, windowPos.y);
    }

    Qt::TouchPointState state = Qt::TouchPointStationary;
    if (event.getType() == PointerEvent::Press && event.getButton() == PointerEvent::PrimaryButton) {
        state = Qt::TouchPointPressed;
    } else if (event.getType() == PointerEvent::Release) {
        state = Qt::TouchPointReleased;
    } else if (_activeTouchPoints.count(event.getID()) && windowPoint != _activeTouchPoints[event.getID()].pos()) {
        state = Qt::TouchPointMoved;
    }

    QEvent::Type touchType = QEvent::TouchUpdate;
    if (_activeTouchPoints.empty()) {
        // If the first active touch point is being created, send a begin
        touchType = QEvent::TouchBegin;
    } if (state == Qt::TouchPointReleased && _activeTouchPoints.size() == 1 && _activeTouchPoints.count(event.getID())) {
        // If the last active touch point is being released, send an end
        touchType = QEvent::TouchEnd;
    } 

    {
        QTouchEvent::TouchPoint point;
        point.setId(event.getID());
        point.setState(state);
        point.setPos(windowPoint);
        point.setScreenPos(windowPoint);
        _activeTouchPoints[event.getID()] = point;
    }

    QTouchEvent touchEvent(touchType, &_touchDevice, event.getKeyboardModifiers());
    {
        QList<QTouchEvent::TouchPoint> touchPoints;
        Qt::TouchPointStates touchPointStates;
        for (const auto& entry : _activeTouchPoints) {
            touchPointStates |= entry.second.state();
            touchPoints.push_back(entry.second);
        }

        touchEvent.setWindow(_webSurface->getWindow());
        touchEvent.setTarget(_webSurface->getRootItem());
        touchEvent.setTouchPoints(touchPoints);
        touchEvent.setTouchPointStates(touchPointStates);
    }

    // Send mouse events to the Web surface so that HTML dialog elements work with mouse press and hover.
    // FIXME: Scroll bar dragging is a bit unstable in the tablet (content can jump up and down at times).
    // This may be improved in Qt 5.8. Release notes: "Cleaned up touch and mouse event delivery".
    //
    // In Qt 5.9 mouse events must be sent before touch events to make sure some QtQuick components will
    // receive mouse events
    Qt::MouseButton button = Qt::NoButton;
    Qt::MouseButtons buttons = Qt::NoButton;
    if (event.getButton() == PointerEvent::PrimaryButton) {
        button = Qt::LeftButton;
    }
    if (event.getButtons() & PointerEvent::PrimaryButton) {
        buttons |= Qt::LeftButton;
    }

#if QT_VERSION >= QT_VERSION_CHECK(5, 9, 0)
    if (event.getType() == PointerEvent::Move) {
        QMouseEvent mouseEvent(QEvent::MouseMove, windowPoint, windowPoint, windowPoint, button, buttons, Qt::NoModifier);
        QCoreApplication::sendEvent(_webSurface->getWindow(), &mouseEvent);
    }
#endif

    if (touchType == QEvent::TouchBegin) {
        _touchBeginAccepted = QCoreApplication::sendEvent(_webSurface->getWindow(), &touchEvent);
    } else if (_touchBeginAccepted) {
        QCoreApplication::sendEvent(_webSurface->getWindow(), &touchEvent);
    }

    // If this was a release event, remove the point from the active touch points
    if (state == Qt::TouchPointReleased) {
        _activeTouchPoints.erase(event.getID());
    }

#if QT_VERSION < QT_VERSION_CHECK(5, 9, 0)
    if (event.getType() == PointerEvent::Move) {
        QMouseEvent mouseEvent(QEvent::MouseMove, windowPoint, windowPoint, windowPoint, button, buttons, Qt::NoModifier);
        QCoreApplication::sendEvent(_webSurface->getWindow(), &mouseEvent);
    }
#endif
//.........这里部分代码省略.........

void RenderableWebEntityItem::handlePointerEvent(const PointerEvent& event) {

    // Ignore mouse interaction if we're locked
    if (getLocked() || !_webSurface) {
        return;
    }

    glm::vec2 windowPos = event.getPos2D() * (METERS_TO_INCHES * _dpi);
    QPointF windowPoint(windowPos.x, windowPos.y);

    if (event.getType() == PointerEvent::Move) {
        // Forward a mouse move event to webSurface
        QMouseEvent* mouseEvent = new QMouseEvent(QEvent::MouseMove, windowPoint, windowPoint, windowPoint, Qt::NoButton, Qt::NoButton, Qt::NoModifier);
        QCoreApplication::postEvent(_webSurface->getWindow(), mouseEvent);
    }

    {
        // Forward a touch update event to webSurface
        if (event.getType() == PointerEvent::Press) {
            this->_pressed = true;
        } else if (event.getType() == PointerEvent::Release) {
            this->_pressed = false;
        }

        QEvent::Type type;
        Qt::TouchPointState touchPointState;
        switch (event.getType()) {
        case PointerEvent::Press:
            type = QEvent::TouchBegin;
            touchPointState = Qt::TouchPointPressed;
            break;
        case PointerEvent::Release:
            type = QEvent::TouchEnd;
            touchPointState = Qt::TouchPointReleased;
            break;
        case PointerEvent::Move:
        default:
            type = QEvent::TouchUpdate;
            touchPointState = Qt::TouchPointMoved;
            break;
        }

        QTouchEvent::TouchPoint point;
        point.setId(event.getID());
        point.setState(touchPointState);
        point.setPos(windowPoint);
        point.setScreenPos(windowPoint);
        QList<QTouchEvent::TouchPoint> touchPoints;
        touchPoints.push_back(point);

        QTouchEvent* touchEvent = new QTouchEvent(type);
        touchEvent->setWindow(nullptr);
        touchEvent->setDevice(nullptr);
        touchEvent->setTarget(nullptr);
        touchEvent->setTouchPoints(touchPoints);
        touchEvent->setTouchPointStates(touchPointState);

        _lastTouchEvent = *touchEvent;

        QCoreApplication::postEvent(_webSurface->getWindow(), touchEvent);
    }
}

void MScenePrivate::touchPointCopyMousePosToPointPos(QTouchEvent::TouchPoint &point, const QGraphicsSceneMouseEvent *event)
{
    point.setPos(event->pos());
    point.setScenePos(event->scenePos());
    point.setScreenPos(event->screenPos());
}