void QQuickMultiPointTouchArea::touchEvent(QTouchEvent *event)
{
switch (event->type()) {
case QEvent::TouchBegin:
case QEvent::TouchUpdate:
case QEvent::TouchEnd: {
//if e.g. a parent Flickable has the mouse grab, don't process the touch events
QQuickWindow *c = window();
QQuickItem *grabber = c ? c->mouseGrabberItem() : 0;
if (grabber && grabber != this && grabber->keepMouseGrab() && grabber->isEnabled()) {
QQuickItem *item = this;
while ((item = item->parentItem())) {
if (item == grabber)
return;
}
}
updateTouchData(event);
if (event->type() == QEvent::TouchEnd)
ungrab();
break;
}
case QEvent::TouchCancel:
ungrab();
break;
default:
QQuickItem::touchEvent(event);
break;
}
}
bool QQuickMouseAreaPrivate::propagateHelper(QQuickMouseEvent *ev, QQuickItem *item,const QPointF &sp, PropagateType sig)
{
//Based off of QQuickWindow::deliverInitialMousePressEvent
//But specific to MouseArea, so doesn't belong in window
Q_Q(const QQuickMouseArea);
QQuickItemPrivate *itemPrivate = QQuickItemPrivate::get(item);
if (itemPrivate->flags & QQuickItem::ItemClipsChildrenToShape) {
QPointF p = item->mapFromScene(sp);
if (!item->contains(p))
return false;
}
QList<QQuickItem *> children = itemPrivate->paintOrderChildItems();
for (int ii = children.count() - 1; ii >= 0; --ii) {
QQuickItem *child = children.at(ii);
if (!child->isVisible() || !child->isEnabled())
continue;
if (propagateHelper(ev, child, sp, sig))
return true;
}
QQuickMouseArea* ma = qobject_cast<QQuickMouseArea*>(item);
if (ma && ma != q && ma->isEnabled() && itemPrivate->acceptedMouseButtons() & ev->button()) {
switch (sig) {
case Click:
if (!ma->d_func()->isClickConnected())
return false;
break;
case DoubleClick:
if (!ma->d_func()->isDoubleClickConnected())
return false;
break;
case PressAndHold:
if (!ma->d_func()->isPressAndHoldConnected())
return false;
break;
}
QPointF p = item->mapFromScene(sp);
if (item->contains(p)) {
ev->setX(p.x());
ev->setY(p.y());
ev->setAccepted(true);//It is connected, they have to explicitly ignore to let it slide
switch (sig) {
case Click: emit ma->clicked(ev); break;
case DoubleClick: emit ma->doubleClicked(ev); break;
case PressAndHold: emit ma->pressAndHold(ev); break;
}
if (ev->isAccepted())
return true;
}
}
return false;
}
bool QQuickMultiPointTouchArea::shouldFilter(QEvent *event)
{
QQuickWindow *c = window();
QQuickItem *grabber = c ? c->mouseGrabberItem() : 0;
bool disabledItem = grabber && !grabber->isEnabled();
bool stealThisEvent = _stealMouse;
bool containsPoint = false;
if (!stealThisEvent) {
switch (event->type()) {
case QEvent::MouseButtonPress:
case QEvent::MouseMove:
case QEvent::MouseButtonRelease: {
QMouseEvent *me = static_cast<QMouseEvent*>(event);
containsPoint = contains(mapFromScene(me->windowPos()));
}
break;
case QEvent::TouchBegin:
case QEvent::TouchUpdate:
case QEvent::TouchEnd: {
QTouchEvent *te = static_cast<QTouchEvent*>(event);
for (const QTouchEvent::TouchPoint &point : te->touchPoints()) {
if (contains(mapFromScene(point.scenePos()))) {
containsPoint = true;
break;
}
}
}
break;
default:
break;
}
}
if ((stealThisEvent || containsPoint) && (!grabber || !grabber->keepMouseGrab() || disabledItem)) {
return true;
}
ungrab();
return false;
}
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);
}
}