C++ QTableView::setMouseTracking方法代码示例

    // Table factory
    QTableView* MakeTableView(QAbstractItemModel* model, bool sortingEnabled = true, uint32_t modelSortColumn = 0)
    {
        class MyTable : public QTableView
        {
        public:
            QStyleOptionViewItem viewOptions() const override
            {
                QStyleOptionViewItem option = QTableView::viewOptions();
                option.decorationAlignment = Qt::AlignHCenter | Qt::AlignCenter;
                option.decorationPosition = QStyleOptionViewItem::Top;
                return option;
            }

            void mouseMoveEvent(QMouseEvent* event) override
            {
                QModelIndex index = indexAt(event->pos());
                if (index.isValid()) {
                    QVariant data = model()->data(index, PlayerTableModel::CursorRole);
                    Qt::CursorShape shape = Qt::ArrowCursor;
                    if (!data.isNull()) {
                        shape = Qt::CursorShape(data.toInt());
                    }
                    setCursor(shape);
                }

                QTableView::mouseMoveEvent(event);
            }
        };

        QTableView* tableView = new MyTable();
        tableView->setModel(model);
        tableView->setSortingEnabled(sortingEnabled);
        if (sortingEnabled) {
            tableView->sortByColumn(FindColumn(model, modelSortColumn));
        }
        tableView->verticalHeader()->hide();
        tableView->setAlternatingRowColors(true);
        tableView->verticalHeader()->setDefaultSectionSize(15);
        tableView->resizeColumnsToContents();
        tableView->horizontalHeader()->setStretchLastSection(true);
        tableView->setSelectionBehavior(QAbstractItemView::SelectRows);
        tableView->setSelectionMode(QAbstractItemView::SingleSelection);
        tableView->setFocusPolicy(Qt::StrongFocus);

        // enable mouse tracking
        tableView->setMouseTracking(true);
        tableView->viewport()->setMouseTracking(true);
        tableView->installEventFilter(this);
        tableView->viewport()->installEventFilter(this);

        return tableView;
    }

TransactionView::TransactionView(QWidget *parent) :
    QWidget(parent), model(0), transactionProxyModel(0),
    transactionView(0)
{
    setContentsMargins(0,0,0,0);
    QHBoxLayout *hlayout = new QHBoxLayout();
    hlayout->setContentsMargins(0,0,0,0);

#ifdef Q_OS_MAC
    hlayout->setSpacing(5);
    hlayout->addSpacing(26);
#else
    hlayout->setSpacing(0);
    hlayout->addSpacing(23);
#endif

    // Build filter row
    dateWidget = new QComboBox(this);
#ifdef Q_OS_MAC
    dateWidget->setFixedWidth(151);
#else
    dateWidget->setFixedWidth(150);
#endif
    dateWidget->addItem(tr("All"), All);
    dateWidget->addItem(tr("Today"), Today);
    dateWidget->addItem(tr("This week"), ThisWeek);
    dateWidget->addItem(tr("This month"), ThisMonth);
    dateWidget->addItem(tr("Last month"), LastMonth);
    dateWidget->addItem(tr("This year"), ThisYear);
    dateWidget->addItem(tr("Range..."), Range);
    hlayout->addWidget(dateWidget);

    typeWidget = new QComboBox(this);
#ifdef Q_OS_MAC
    typeWidget->setFixedWidth(121);
#else
    typeWidget->setFixedWidth(120);
#endif

    typeWidget->addItem(tr("All"), TransactionFilterProxy::ALL_TYPES);
    typeWidget->addItem(tr("Received with"), TransactionFilterProxy::TYPE(TransactionRecord::RecvWithAddress) |
                                        TransactionFilterProxy::TYPE(TransactionRecord::RecvFromOther));
    typeWidget->addItem(tr("Sent to"), TransactionFilterProxy::TYPE(TransactionRecord::SendToAddress) |
                                  TransactionFilterProxy::TYPE(TransactionRecord::SendToOther));
    typeWidget->addItem(tr("To yourself"), TransactionFilterProxy::TYPE(TransactionRecord::SendToSelf));
    typeWidget->addItem(tr("Interest"), TransactionFilterProxy::TYPE(TransactionRecord::Generated));
    typeWidget->addItem(tr("Other"), TransactionFilterProxy::TYPE(TransactionRecord::Other));

    hlayout->addWidget(typeWidget);

    addressWidget = new QLineEdit(this);
#if QT_VERSION >= 0x040700
    /* Do not move this to the XML file, Qt before 4.7 will choke on it */
    addressWidget->setPlaceholderText(tr("Enter address or label to search"));
#endif
    hlayout->addWidget(addressWidget);

    amountWidget = new QLineEdit(this);
#if QT_VERSION >= 0x040700
    /* Do not move this to the XML file, Qt before 4.7 will choke on it */
    amountWidget->setPlaceholderText(tr("Min amount"));
#endif
    amountWidget->setFixedWidth(100);
    amountWidget->setValidator(new QDoubleValidator(0, 1e20, 8, this));
    hlayout->addWidget(amountWidget);

    QVBoxLayout *vlayout = new QVBoxLayout(this);
    vlayout->setContentsMargins(0,0,0,0);
    vlayout->setSpacing(0);

    QTableView *view = new QTableView(this);
    view->setFont(qFont);
    view->setMouseTracking(true);
    view->viewport()->setAttribute(Qt::WA_Hover, true);
    view->horizontalHeader()->setHighlightSections(false);
    vlayout->addLayout(hlayout);
    vlayout->addWidget(createDateRangeWidget());
    vlayout->addWidget(view);
    vlayout->setSpacing(0);
    int width = view->verticalScrollBar()->sizeHint().width();
    // Cover scroll bar width with spacing
#ifdef Q_OS_MAC
    hlayout->addSpacing(width+2);
#else
    hlayout->addSpacing(width);
#endif
    // Always show scroll bar
    view->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
    view->setTabKeyNavigation(false);
    view->setContextMenuPolicy(Qt::CustomContextMenu);

    transactionView = view;

    totalWidget = new QLabel(this);
    totalWidget->setFont(qFont);
    totalWidget->setAlignment(Qt::AlignBottom | Qt::AlignRight);
    totalWidget->setLayoutDirection(Qt::RightToLeft);
    totalWidget->setFixedHeight(27);
    totalWidget->setFixedWidth(300);
    totalWidget->setText(tr("Total: "));
//.........这里部分代码省略.........