C++ (Cpp) Touch::cloneWithNewTarget Examples

Example #1

void EventPath::retargetTouch(TouchEventContext::TouchListType touchListType, const Touch& touch)
{
    EventTarget* eventTarget = touch.target();
    if (!eventTarget)
        return;

    Node* targetNode = eventTarget->toNode();
    if (!targetNode)
        return;

    RelatedNodeRetargeter retargeter(*targetNode, *m_path[0]->node());
    TreeScope* previousTreeScope = nullptr;
    for (auto& context : m_path) {
        Node& currentTarget = *context->node();
        TreeScope& currentTreeScope = currentTarget.treeScope();
        if (UNLIKELY(previousTreeScope && &currentTreeScope != previousTreeScope))
            retargeter.moveToNewTreeScope(previousTreeScope, currentTreeScope);

        Node* currentRelatedNode = retargeter.currentNode(currentTarget);
        downcast<TouchEventContext>(*context).touchList(touchListType)->append(touch.cloneWithNewTarget(currentRelatedNode));

        previousTreeScope = &currentTreeScope;
    }
}