303 lines
8.1 KiB
C++
303 lines
8.1 KiB
C++
#include "focusController.h"
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#include "listViewFocusController.h"
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#include <QQuickWindow>
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#include <QQmlApplicationEngine>
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bool isListView(QObject* item)
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{
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return item->inherits("QQuickListView");
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}
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bool isOnTheScene(QObject* object)
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{
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QQuickItem* item = qobject_cast<QQuickItem*>(object);
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if (!item) {
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qWarning() << "Couldn't recognize object as item";
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return false;
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}
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if (!item->isVisible()) {
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// qDebug() << "===>> The item is not visible: " << item;
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return false;
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}
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QRectF itemRect = item->mapRectToScene(item->childrenRect());
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QQuickWindow* window = item->window();
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if (!window) {
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qWarning() << "Couldn't get the window on the Scene check";
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return false;
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}
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const auto contentItem = window->contentItem();
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if (!contentItem) {
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qWarning() << "Couldn't get the content item on the Scene check";
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return false;
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}
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QRectF windowRect = contentItem->childrenRect();
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const auto res = (windowRect.contains(itemRect) || isListView(item));
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// qDebug() << (res ? "===>> item is inside the Scene" : "===>> ITEM IS OUTSIDE THE SCENE") << " itemRect: " << itemRect << "; windowRect: " << windowRect;
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return res;
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}
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QList<QObject*> getSubChain(QObject* object)
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{
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QList<QObject*> res;
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if (!object) {
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qDebug() << "The object is NULL";
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return res;
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}
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const auto children = object->children();
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for(const auto child : children) {
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if (child
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&& isFocusable(child)
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&& isOnTheScene(child)
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&& isEnabled(child)
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) {
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res.append(child);
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} else {
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res.append(getSubChain(child));
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}
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}
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return res;
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}
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FocusController::FocusController(QQmlApplicationEngine* engine, QObject *parent)
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: QObject{parent}
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, m_engine{engine}
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, m_focusChain{}
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, m_focusedItem{nullptr}
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, m_focusedItemIndex{-1}
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, m_rootObjects{}
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, m_defaultFocusItem{QSharedPointer<QQuickItem>()}
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, m_lvfc{nullptr}
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{
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QObject::connect(m_engine.get(), &QQmlApplicationEngine::objectCreated, this, [this](QObject *object, const QUrl &url){
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QQuickItem* newDefaultFocusItem = object->findChild<QQuickItem*>("defaultFocusItem");
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if(newDefaultFocusItem && m_defaultFocusItem != newDefaultFocusItem) {
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m_defaultFocusItem.reset(newDefaultFocusItem);
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qDebug() << "===>> NEW DEFAULT FOCUS ITEM " << m_defaultFocusItem;
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}
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});
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}
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void FocusController::nextItem(Direction direction)
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{
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reload(direction);
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if (m_lvfc) {
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direction == Direction::Forward ? focusNextListViewItem() : focusPreviousListViewItem();
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qDebug() << "===>> [handling the ListView]";
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return;
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}
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if(m_focusChain.empty()) {
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qWarning() << "There are no items to navigate";
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return;
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}
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if (m_focusedItemIndex == (m_focusChain.size() - 1)) {
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qDebug() << "Last focus index. Making it zero...";
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m_focusedItemIndex = 0;
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} else {
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qDebug() << "Incrementing focus index";
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m_focusedItemIndex++;
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}
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m_focusedItem = qobject_cast<QQuickItem*>(m_focusChain.at(m_focusedItemIndex));
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if(m_focusedItem == nullptr) {
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qWarning() << "Failed to get item to focus on. Setting focus on default";
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m_focusedItem = m_defaultFocusItem.get();
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return;
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}
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if(isListView(m_focusedItem)) {
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qDebug() << "===>> [Found ListView]";
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m_lvfc = new ListViewFocusController(m_focusedItem, this);
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if(direction == Direction::Forward) {
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m_lvfc->viewToBegin();
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m_lvfc->nextDelegate();
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focusNextListViewItem();
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} else {
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m_lvfc->viewToEnd();
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m_lvfc->previousDelegate();
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focusPreviousListViewItem();
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}
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return;
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}
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qDebug() << "===>> Focused Item: " << m_focusedItem;
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m_focusedItem->forceActiveFocus(Qt::TabFocusReason);
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printItems(m_focusChain, m_focusedItem);
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const auto w = m_defaultFocusItem->window();
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qDebug() << "===>> CURRENT ACTIVE ITEM: " << w->activeFocusItem();
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qDebug() << "===>> CURRENT FOCUS OBJECT: " << w->focusObject();
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if(m_rootObjects.empty()) {
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qDebug() << "===>> ROOT OBJECT IS DEFAULT";
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} else {
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qDebug() << "===>> ROOT OBJECT: " << m_rootObjects.top();
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}
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}
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void FocusController::focusNextListViewItem()
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{
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if (m_lvfc->isLastFocusItemInListView() || m_lvfc->isReturnNeeded()) {
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qDebug() << "===>> [Last item in ListView was reached. Going to the NEXT element after ListView]";
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delete m_lvfc;
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m_lvfc = nullptr;
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nextItem(Direction::Forward);
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return;
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} else if (m_lvfc->isLastFocusItemInDelegate()) {
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qDebug() << "===>> [End of delegate elements was reached. Going to the next delegate]";
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m_lvfc->resetFocusChain();
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m_lvfc->nextDelegate();
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m_lvfc->viewAtCurrentIndex();
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}
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m_lvfc->focusNextItem();
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}
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void FocusController::focusPreviousListViewItem()
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{
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if (m_lvfc->isFirstFocusItemInListView() || m_lvfc->isReturnNeeded()) {
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qDebug() << "===>> [First item in ListView was reached. Going to the PREVIOUS element after ListView]";
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delete m_lvfc;
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m_lvfc = nullptr;
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nextItem(Direction::Backward);
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return;
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} else if (m_lvfc->isFirstFocusItemInDelegate()) {
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m_lvfc->resetFocusChain();
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m_lvfc->previousDelegate();
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m_lvfc->viewAtCurrentIndex();
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}
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m_lvfc->focusPreviousItem();
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}
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void FocusController::nextKeyTabItem()
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{
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nextItem(Direction::Forward);
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}
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void FocusController::previousKeyTabItem()
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{
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nextItem(Direction::Backward);
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}
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void FocusController::nextKeyUpItem()
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{
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nextItem(Direction::Backward);
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}
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void FocusController::nextKeyDownItem()
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{
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nextItem(Direction::Forward);
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}
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void FocusController::nextKeyLeftItem()
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{
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nextItem(Direction::Backward);
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}
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void FocusController::nextKeyRightItem()
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{
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nextItem(Direction::Forward);
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}
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void FocusController::setFocusOnDefaultItem()
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{
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qDebug() << "===>> Setting focus on DEFAULT FOCUS ITEM...";
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m_defaultFocusItem->forceActiveFocus();
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}
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void FocusController::reload(Direction direction)
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{
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m_focusChain.clear();
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QObject* rootObject = (m_rootObjects.empty()
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? m_engine->rootObjects().value(0)
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: m_rootObjects.top());
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if(!rootObject) {
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qCritical() << "No ROOT OBJECT found!";
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m_focusedItemIndex = -1;
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resetRootObject();
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resetListView();
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setFocusOnDefaultItem();
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return;
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}
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qDebug() << "===>> ROOT OBJECTS: " << rootObject;
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m_focusChain.append(getSubChain(rootObject));
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std::sort(m_focusChain.begin(), m_focusChain.end(), direction == Direction::Forward ? isLess : isMore);
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if (m_focusChain.empty()) {
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qWarning() << "Focus chain is empty!";
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m_focusedItemIndex = -1;
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resetRootObject();
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resetListView();
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setFocusOnDefaultItem();
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return;
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}
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m_focusedItemIndex = m_focusChain.indexOf(m_focusedItem);
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if(m_focusedItemIndex == -1) {
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qInfo() << "No focus item in chain.";
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resetListView();
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setFocusOnDefaultItem();
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return;
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}
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}
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void FocusController::resetListView()
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{
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if(m_lvfc) {
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delete m_lvfc;
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m_lvfc = nullptr;
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}
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}
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void FocusController::pushRootObject(QObject* object)
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{
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m_rootObjects.push(object);
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qDebug() << "===>> ROOT OBJECT is changed to: " << m_rootObjects.top();
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}
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void FocusController::dropRootObject(QObject* object)
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{
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if (m_rootObjects.empty()) {
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qDebug() << "ROOT OBJECT is already NULL";
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return;
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}
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if (m_rootObjects.top() == object) {
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m_rootObjects.pop();
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if(m_rootObjects.size()) {
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qDebug() << "===>> ROOT OBJECT is changed to: " << m_rootObjects.top();
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} else {
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qDebug() << "===>> ROOT OBJECT is changed to NULL";
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}
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} else {
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qWarning() << "===>> TRY TO DROP WRONG ROOT OBJECT: " << m_rootObjects.top() << " SHOULD BE: " << object;
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}
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}
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void FocusController::resetRootObject()
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{
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m_rootObjects.clear();
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qDebug() << "===>> ROOT OBJECT IS RESETED";
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}
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