format ListViewFocusController
This commit is contained in:
Cyril Anisimov
parent
9620a24d6a
commit
a57e94e4f2
2 changed files with 122 additions and 132 deletions
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@ -1,115 +1,110 @@
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#include "listViewFocusController.h"
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#include <QQuickItem>
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#include <QQueue>
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#include <QPointF>
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#include <QRectF>
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#include <QQueue>
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#include <QQuickWindow>
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#include <QRectF>
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bool isVisible(QObject* item)
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namespace focusControlTools
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{
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const auto res = item->property("visible").toBool();
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return res;
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}
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bool isFocusable(QObject* item)
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{
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const auto res = item->property("isFocusable").toBool();
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return res;
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}
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QPointF getItemCenterPointOnScene(QQuickItem* item)
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{
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const auto x0 = item->x() + (item->width() / 2);
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const auto y0 = item->y() + (item->height() / 2);
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return item->parentItem()->mapToScene(QPointF{x0, y0});
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}
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bool isLess(QObject* item1, QObject* item2)
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{
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const auto p1 = getItemCenterPointOnScene(qobject_cast<QQuickItem*>(item1));
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const auto p2 = getItemCenterPointOnScene(qobject_cast<QQuickItem*>(item2));
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return (p1.y() == p2.y()) ? (p1.x() < p2.x()) : (p1.y() < p2.y());
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}
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bool isMore(QObject* item1, QObject* item2)
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{
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return !isLess(item1, item2);
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}
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bool isEnabled(QObject* obj)
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{
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const auto item = qobject_cast<QQuickItem*>(obj);
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return item && item->isEnabled();
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}
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QList<QObject*> getItemsChain(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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bool isVisible(QObject *item)
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{
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const auto res = item->property("visible").toBool();
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return res;
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}
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const auto children = object->children();
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bool isFocusable(QObject *item)
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{
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const auto res = item->property("isFocusable").toBool();
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return res;
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}
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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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&& isEnabled(child)
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&& isVisible(child)
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) {
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res.append(child);
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} else {
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res.append(getItemsChain(child));
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QPointF getItemCenterPointOnScene(QQuickItem *item)
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{
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const auto x0 = item->x() + (item->width() / 2);
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const auto y0 = item->y() + (item->height() / 2);
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return item->parentItem()->mapToScene(QPointF { x0, y0 });
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}
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bool isLess(QObject *item1, QObject *item2)
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{
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const auto p1 = getItemCenterPointOnScene(qobject_cast<QQuickItem *>(item1));
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const auto p2 = getItemCenterPointOnScene(qobject_cast<QQuickItem *>(item2));
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return (p1.y() == p2.y()) ? (p1.x() < p2.x()) : (p1.y() < p2.y());
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}
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bool isMore(QObject *item1, QObject *item2)
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{
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return !isLess(item1, item2);
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}
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bool isEnabled(QObject *obj)
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{
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const auto item = qobject_cast<QQuickItem *>(obj);
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return item && item->isEnabled();
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}
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QList<QObject *> getItemsChain(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 && isFocusable(child) && isEnabled(child) && isVisible(child)) {
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res.append(child);
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} else {
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res.append(getItemsChain(child));
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}
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}
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return res;
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}
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void printItems(const QList<QObject *> &items, QObject *current_item)
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{
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for (const auto &item : items) {
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QQuickItem *i = qobject_cast<QQuickItem *>(item);
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QPointF coords { getItemCenterPointOnScene(i) };
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QString prefix = current_item == i ? "==>" : " ";
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qDebug() << prefix << " Item: " << i << " with coords: " << coords;
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}
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}
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return res;
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}
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void printItems(const QList<QObject*>& items, QObject* current_item)
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{
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for(const auto& item : items) {
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QQuickItem* i = qobject_cast<QQuickItem*>(item);
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QPointF coords {getItemCenterPointOnScene(i)};
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QString prefix = current_item == i ? "==>" : " ";
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qDebug() << prefix << " Item: " << i << " with coords: " << coords;
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}
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}
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} // namespace focusControlTools
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///////////////////////////////////////////////////////////////////////////////////////////////////
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ListViewFocusController::ListViewFocusController(QQuickItem* listView, QObject* parent)
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: QObject{parent}
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, m_listView{listView}
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, m_focusChain{}
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, m_currentSection{Section::Default}
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, m_header{nullptr}
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, m_footer{nullptr}
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, m_focusedItem{nullptr}
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, m_focusedItemIndex{-1}
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, m_delegateIndex{0}
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, m_isReturnNeeded{false}
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, m_currentSectionString {"Default", "Header", "Delegate", "Footer"}
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ListViewFocusController::ListViewFocusController(QQuickItem *listView, QObject *parent)
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: QObject { parent },
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m_listView { listView },
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m_focusChain {},
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m_currentSection { Section::Default },
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m_header { nullptr },
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m_footer { nullptr },
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m_focusedItem { nullptr },
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m_focusedItemIndex { -1 },
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m_delegateIndex { 0 },
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m_isReturnNeeded { false },
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m_currentSectionString { "Default", "Header", "Delegate", "Footer" }
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{
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QVariant headerItemProperty = m_listView->property("headerItem");
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m_header = headerItemProperty.canConvert<QQuickItem*>() ? headerItemProperty.value<QQuickItem*>() : nullptr;
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m_header = headerItemProperty.canConvert<QQuickItem *>() ? headerItemProperty.value<QQuickItem *>() : nullptr;
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QVariant footerItemProperty = m_listView->property("footerItem");
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m_footer = footerItemProperty.canConvert<QQuickItem*>() ? footerItemProperty.value<QQuickItem*>() : nullptr;
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m_footer = footerItemProperty.canConvert<QQuickItem *>() ? footerItemProperty.value<QQuickItem *>() : nullptr;
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}
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ListViewFocusController::~ListViewFocusController()
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{
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}
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void ListViewFocusController::viewAtCurrentIndex() const
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{
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switch(m_currentSection) {
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case Section::Default:
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[[fallthrough]];
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switch (m_currentSection) {
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case Section::Default: [[fallthrough]];
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case Section::Header: {
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qDebug() << "===>> [FOCUS ON BEGINNING...]";
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QMetaObject::invokeMethod(m_listView, "positionViewAtBeginning");
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@ -117,9 +112,8 @@ void ListViewFocusController::viewAtCurrentIndex() const
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}
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case Section::Delegate: {
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qDebug() << "===>> [FOCUS ON INDEX...]";
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QMetaObject::invokeMethod(m_listView, "positionViewAtIndex",
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Q_ARG(int, m_delegateIndex), // Index
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Q_ARG(int, 2)); // PositionMode (0 = Visible)
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QMetaObject::invokeMethod(m_listView, "positionViewAtIndex", Q_ARG(int, m_delegateIndex), // Index
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Q_ARG(int, 2)); // PositionMode (0 = Visible)
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break;
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}
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case Section::Footer: {
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@ -128,7 +122,6 @@ void ListViewFocusController::viewAtCurrentIndex() const
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break;
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}
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}
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}
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int ListViewFocusController::size() const
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@ -151,9 +144,9 @@ void ListViewFocusController::nextDelegate()
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{
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const auto sectionName = m_currentSectionString[static_cast<int>(m_currentSection)];
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qDebug() << "===>> [nextDelegate... current section: " << sectionName << " ]";
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switch(m_currentSection) {
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switch (m_currentSection) {
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case Section::Default: {
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if(hasHeader()) {
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if (hasHeader()) {
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m_currentSection = Section::Header;
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viewAtCurrentIndex();
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break;
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@ -194,9 +187,9 @@ void ListViewFocusController::nextDelegate()
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void ListViewFocusController::previousDelegate()
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{
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switch(m_currentSection) {
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switch (m_currentSection) {
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case Section::Default: {
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if(hasFooter()) {
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if (hasFooter()) {
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m_currentSection = Section::Footer;
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break;
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}
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@ -237,22 +230,20 @@ void ListViewFocusController::decrementIndex()
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m_delegateIndex--;
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}
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QQuickItem* ListViewFocusController::itemAtIndex(const int index) const
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QQuickItem *ListViewFocusController::itemAtIndex(const int index) const
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{
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QQuickItem* item{nullptr};
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QQuickItem *item { nullptr };
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QMetaObject::invokeMethod(m_listView, "itemAtIndex",
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Q_RETURN_ARG(QQuickItem*, item),
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Q_ARG(int, index));
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QMetaObject::invokeMethod(m_listView, "itemAtIndex", Q_RETURN_ARG(QQuickItem *, item), Q_ARG(int, index));
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return item;
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}
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QQuickItem* ListViewFocusController::currentDelegate() const
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QQuickItem *ListViewFocusController::currentDelegate() const
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{
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QQuickItem* result{nullptr};
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QQuickItem *result { nullptr };
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switch(m_currentSection) {
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switch (m_currentSection) {
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case Section::Default: {
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qWarning() << "No elements...";
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break;
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@ -273,7 +264,7 @@ QQuickItem* ListViewFocusController::currentDelegate() const
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return result;
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}
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QQuickItem* ListViewFocusController::focusedItem() const
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QQuickItem *ListViewFocusController::focusedItem() const
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{
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return m_focusedItem;
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}
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@ -285,7 +276,7 @@ void ListViewFocusController::focusNextItem()
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return;
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}
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m_focusChain = getItemsChain(currentDelegate());
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m_focusChain = focusControlTools::getItemsChain(currentDelegate());
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if (m_focusChain.empty()) {
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qWarning() << "No elements found in the delegate. Going to next delegate...";
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@ -294,7 +285,7 @@ void ListViewFocusController::focusNextItem()
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return;
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}
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m_focusedItemIndex++;
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m_focusedItem = qobject_cast<QQuickItem*>(m_focusChain.at(m_focusedItemIndex));
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m_focusedItem = qobject_cast<QQuickItem *>(m_focusChain.at(m_focusedItemIndex));
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qDebug() << "==>> [ Focused Item: " << m_focusedItem << " with Index: " << m_focusedItemIndex << " ]";
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m_focusedItem->forceActiveFocus(Qt::TabFocusReason);
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}
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@ -307,7 +298,7 @@ void ListViewFocusController::focusPreviousItem()
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if (m_focusChain.empty()) {
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qDebug() << "Empty focusChain with current delegate: " << currentDelegate() << "Scanning for elements...";
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m_focusChain = getItemsChain(currentDelegate());
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m_focusChain = focusControlTools::getItemsChain(currentDelegate());
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}
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if (m_focusChain.empty()) {
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qWarning() << "No elements found in the delegate. Going to next delegate...";
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@ -319,7 +310,7 @@ void ListViewFocusController::focusPreviousItem()
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m_focusedItemIndex = m_focusChain.size();
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}
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m_focusedItemIndex--;
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m_focusedItem = qobject_cast<QQuickItem*>(m_focusChain.at(m_focusedItemIndex));
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m_focusedItem = qobject_cast<QQuickItem *>(m_focusChain.at(m_focusedItemIndex));
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qDebug() << "==>> [ Focused Item: " << m_focusedItem << " with Index: " << m_focusedItemIndex << " ]";
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m_focusedItem->forceActiveFocus(Qt::TabFocusReason);
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}
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@ -343,12 +334,12 @@ bool ListViewFocusController::isLastFocusItemInDelegate() const
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bool ListViewFocusController::hasHeader() const
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{
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return m_header && !getItemsChain(m_header).isEmpty();
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return m_header && !focusControlTools::getItemsChain(m_header).isEmpty();
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}
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bool ListViewFocusController::hasFooter() const
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{
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return m_footer && !getItemsChain(m_footer).isEmpty();
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return m_footer && !focusControlTools::getItemsChain(m_footer).isEmpty();
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}
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bool ListViewFocusController::isFirstFocusItemInListView() const
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@ -366,9 +357,7 @@ bool ListViewFocusController::isFirstFocusItemInListView() const
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case Section::Default: {
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return true;
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}
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default:
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qWarning() << "Wrong section";
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return true;
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default: qWarning() << "Wrong section"; return true;
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}
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}
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@ -387,9 +376,7 @@ bool ListViewFocusController::isLastFocusItemInListView() const
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case Section::Footer: {
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return isLastFocusItemInDelegate();
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}
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default:
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qWarning() << "Wrong section";
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return true;
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default: qWarning() << "Wrong section"; return true;
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}
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}
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