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

/*!
    Create and return the table used to visualize digital signals.
*/
QTableView* UiDigitalGenerator::createTable()
{
    // Deallocation: "Qt Object trees" (See UiMainWindow)
    QTableView* table = new QTableView(this);

    QItemSelectionModel* m = table->selectionModel();
    if (m != NULL) delete m;
    table->setModel(mSignals);

    // Deallocation: "Qt Object trees" (See UiMainWindow)
    DigitalDelegate* delegate = new DigitalDelegate(this);
    QAbstractItemDelegate* d = table->itemDelegate();
    if (d != NULL) delete d;
    table->setItemDelegate(delegate);

    table->resizeColumnsToContents();
    table->resizeRowsToContents();

    connect(table->selectionModel(),
            SIGNAL(selectionChanged(QItemSelection,QItemSelection)),
            this,
            SLOT(handleSelectionChanged(QItemSelection,QItemSelection)));


    return table;
}

    // 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;
    }

void LoungeWidget::setupUI()
{
    QVBoxLayout *mainLayout = new QVBoxLayout();
    
    QTableView *connected = new QTableView();
    
    mainLayout->addWidget(connected);
    
    connected->setModel(m_connectedPlayerList);
    connected->setSortingEnabled(true);
    connected->resizeColumnsToContents();
    connected->horizontalHeader()->setStretchLastSection(true);
    connected->sortByColumn(0, Qt::AscendingOrder);
    
    connect(connected, SIGNAL(activated(QModelIndex)), this, SLOT(processActivatedRow(QModelIndex)));
    
    setLayout(mainLayout);
}

QTableView* createView(QSqlQueryModel *model, const QString &title = "")
{
    QTableView *view = new QTableView;
    view->setModel(model);
#if defined(Q_OS_SYMBIAN) || defined(Q_WS_MAEMO_5) || defined(Q_WS_SIMULATOR)
    Q_UNUSED(title);
    view->resizeColumnsToContents();
#else
    static int offset = 0;

    view->setWindowTitle(title);
    view->move(100 + offset, 100 + offset);
    offset += 20;
    view->show();
#endif

    return view;
}

//! [0]
TableEditor::TableEditor(const QString &tableName, QWidget *parent)
    : QWidget(parent)
{
    model = new QSqlTableModel(this);
    model->setTable(tableName);
    model->setEditStrategy(QSqlTableModel::OnManualSubmit);
    model->select();

    model->setHeaderData(0, Qt::Horizontal, tr("ID"));
    model->setHeaderData(1, Qt::Horizontal, tr("First name"));
    model->setHeaderData(2, Qt::Horizontal, tr("Last name"));

//! [0] //! [1]
    QTableView *view = new QTableView;
    view->setModel(model);
    view->resizeColumnsToContents();
//! [1]

//! [2]
    submitButton = new QPushButton(tr("Submit"));
    submitButton->setDefault(true);
    revertButton = new QPushButton(tr("&Revert"));
    quitButton = new QPushButton(tr("Quit"));

    buttonBox = new QDialogButtonBox(Qt::Vertical);
    buttonBox->addButton(submitButton, QDialogButtonBox::ActionRole);
    buttonBox->addButton(revertButton, QDialogButtonBox::ActionRole);
    buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
//! [2]

//! [3]
    connect(submitButton, SIGNAL(clicked()), this, SLOT(submit()));
    connect(revertButton, SIGNAL(clicked()), model, SLOT(revertAll()));
    connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
//! [3]

//! [4]
    QHBoxLayout *mainLayout = new QHBoxLayout;
    mainLayout->addWidget(view);
    mainLayout->addWidget(buttonBox);
    setLayout(mainLayout);

    setWindowTitle(tr("Cached Table"));
}

TableView::TableView()
   : QWidget()
{
   if (! this->createConnection()) {
      QString msg = "** Create Database Error";
      throw msg;
   }

   setWindowTitle(tr("Table View Model"));
   setMinimumSize(300, 350);

   //
   QSqlTableModel *model = new QSqlTableModel(this, m_db);

   QStringList tempX = m_db.tables();
   model->setTable(tempX.at(0));

   QSqlError error = model->lastError();

   if ( error.isValid() )  {
      ksMsg( this, "Table View - SQL Error", error.text() );
   }

   model->setEditStrategy(QSqlTableModel::OnManualSubmit);
   model->setSort(2, Qt::AscendingOrder);
   model->select();

   model->setHeaderData(0, Qt::Horizontal, QObject::tr("ID"));
   model->setHeaderData(1, Qt::Horizontal, QObject::tr("First name"));
   model->setHeaderData(2, Qt::Horizontal, QObject::tr("Last name"));

   //
   QTableView *view = new QTableView;
   view->setModel(model);
   view->resizeColumnsToContents();

   QHeaderView *temp = view->horizontalHeader();
   temp->setStretchLastSection(true);

   QHBoxLayout *mainLayout = new QHBoxLayout;
   mainLayout->addWidget(view);
   setLayout(mainLayout);  
}

void GuiTools::ModelToView(QAbstractItemModel *model, QAbstractItemView *view)
{
    view->reset();
    view->setModel(model);

    QTableView* tableView = dynamic_cast<QTableView*>(view);
    if(tableView && model)
    {
        tableView->horizontalHeader()->setStretchLastSection(true);
        tableView->resizeColumnsToContents();
        tableView->resizeRowsToContents();

        //        // set maximum height
        //        int count = model->rowCount(QModelIndex());
        //        int h=0;
        //        for (int i = 0; i < count; i++)
        //            h += tableView->rowHeight(i);
        //        int maxH =
        //                (h +                                                      // total row height
        //                 count +                                                  // to account for the pixel(s) used in the grid
        //                 tableView->horizontalHeader()->height() +
        //                 tableView->horizontalScrollBar()->height());   // Need room for the horizontal scrollbar

        //        tableView->setMaximumHeight(maxH);
        //        tableView->resize(tableView->width(),maxH);

    }

    QTreeView* treeView = dynamic_cast<QTreeView*>(view);
    if(treeView && model)
    {
        for(int i=0;i<model->columnCount();i++)
            treeView->resizeColumnToContents(i);
        treeView->setSortingEnabled(true);
    }

    MyTreeView* myTreeView = dynamic_cast<MyTreeView*>(view);
    if(myTreeView && model)
    {
        connect(model,SIGNAL(dataChanged(const QModelIndex&,const QModelIndex&)),myTreeView,SLOT(onDataChanged(const QModelIndex&,const QModelIndex&)));
    }
}

void MainWindow::on_actShowStat_triggered()
{
  QString query = QString("call p_showStat_admin('%1', '%2', 0);")
      .arg(_model->dateA_dbformat())
      .arg(_model->dateZ_dbformat());
  qDebug() << query;
  QSqlQueryModel *m = App::theApp()->db_model(query);

  QDialog *dlgStat = new QDialog();
  dlgStat->setWindowTitle("Статистика");
  dlgStat->setGeometry(200, 200, 400, 200);

  QTableView* view = new QTableView();
  view->setModel(m);
  view->resizeColumnsToContents();
  view->resizeRowsToContents();

  QVBoxLayout* lay = new QVBoxLayout(dlgStat);
  lay->addWidget(view);

  dlgStat->exec();
}

void DkFileAssociationsPreference::createLayout() {
	
	QStringList fileFilters = Settings::param().app().openFilters;

	mModel = new QStandardItemModel(this);
	mModel->setObjectName("fileModel");
	for (int rIdx = 1; rIdx < fileFilters.size(); rIdx++)
		mModel->appendRow(getItems(fileFilters.at(rIdx), checkFilter(fileFilters.at(rIdx), Settings::param().app().browseFilters), checkFilter(fileFilters.at(rIdx), Settings::param().app().registerFilters)));

	mModel->setHeaderData(0, Qt::Horizontal, tr("Filter"));
	mModel->setHeaderData(1, Qt::Horizontal, tr("Browse"));
	mModel->setHeaderData(2, Qt::Horizontal, tr("Register"));

	QTableView* filterTableView = new QTableView(this);
	filterTableView->setModel(mModel);
	filterTableView->setSelectionBehavior(QAbstractItemView::SelectRows);
	filterTableView->verticalHeader()->hide();
	//filterTableView->horizontalHeader()->hide();
	filterTableView->setShowGrid(false);
	filterTableView->resizeColumnsToContents();
	filterTableView->resizeRowsToContents();
	filterTableView->setWordWrap(false);

	QPushButton* openDefault = new QPushButton(tr("Set as Default Viewer"), this);
	openDefault->setObjectName("openDefault");

	// now the final widgets
	QVBoxLayout* layout = new QVBoxLayout(this);
	layout->addWidget(filterTableView);

#ifdef Q_OS_WIN
	layout->addWidget(openDefault);
#else
	openDefault->hide();
#endif

}

bool DatabaseHandler::getSpeciesList(QString type, QComboBox * cmb_box) {
	qDebug() << "Populating species list for " << type;
    QString qstr = "SELECT name_de, name_lat, euring_id, length FROM taxa LEFT JOIN "
    		"(SELECT id_code, to_char(avg(length), 'FM99.99') as length FROM census WHERE tp='%1' GROUP BY id_code) as lt ON taxa.euring_id = lt.id_code "
    		"WHERE type='%1' ORDER BY seaflag DESC, name_de";
	QSqlQueryModel * model = new QSqlQueryModel;
	model->setQuery(qstr.arg(type));
	qDebug() << qstr.arg(type);
	model->setHeaderData(0, Qt::Horizontal, "Deutscher Name");
	model->setHeaderData(1, Qt::Horizontal, "Wissenschaftlicher Name");
	model->setHeaderData(2, Qt::Horizontal, "EURING Code");
	model->setHeaderData(3, Qt::Horizontal, QString::fromUtf8("Länge"));
	cmb_box->setModel(model);
	QTableView * view = new QTableView;
	cmb_box->setView(view);
	view->verticalHeader()->hide();
	view->hideColumn(2);
	view->resizeColumnsToContents();
	view->setSelectionMode(QAbstractItemView::SingleSelection);
	view->setSelectionBehavior(QAbstractItemView::SelectRows);
	view->setMinimumWidth(view->horizontalHeader()->length());

	return true;
}

QSortFilterProxyModel * GuiTools::ModelToViewWithFilter(QAbstractItemModel *model, QAbstractItemView *view,QLineEdit* lineEdit,QSortFilterProxyModel *proxyModel)
{
    view->reset();
    if(!proxyModel)
        proxyModel = new QSortFilterProxyModel((QObject*)lineEdit);

    proxyModel->setSourceModel(model);
    view->setModel(proxyModel);
    //view->horizontalHeader()->setResizeMode(QHeaderView::Stretch);
    QTableView* tableView = dynamic_cast<QTableView*>(view);
    if(tableView)
    {
        tableView->horizontalHeader()->setStretchLastSection(true);
        tableView->resizeColumnsToContents();
        tableView->resizeRowsToContents();
        tableView->setSortingEnabled(true);
        tableView->verticalHeader()->hide();
    }

    QTreeView* treeView = dynamic_cast<QTreeView*>(view);
    if(treeView)
    {
        for(int i=0;i<model->columnCount();i++)
            treeView->resizeColumnToContents(i);
        treeView->setSortingEnabled(true);
    }


    // views' filter
    proxyModel->setFilterKeyColumn(0);
    proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
    connect(lineEdit,SIGNAL(textChanged(const QString&)),
            proxyModel,SLOT(setFilterWildcard(const QString&)),Qt::AutoConnection);

    return proxyModel;
}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

// ![0]
    QStandardItemModel model(0, 1);
    populateListModel(&model);
// ![0]

    QWidget toplevel;
    QVBoxLayout *layout = new QVBoxLayout(&toplevel);

// ![1]
    QMaemo5ValueButton *button1 = new QMaemo5ValueButton("Value besides text");
    button1->setValueLayout(QMaemo5ValueButton::ValueBesideText);
    QMaemo5ListPickSelector *selector1 = new QMaemo5ListPickSelector;
    selector1->setModel(&model);
    // not setting the current index means that the value is empty.
    button1->setPickSelector(selector1);
// ![1]

// ![2]
    QStandardItemModel tableModel(0, 0);
    populateTableModel(&tableModel);
// ![2]

// ![3]
    QMaemo5ValueButton *button2 = new QMaemo5ValueButton("Value under text");
    button2->setValueLayout(QMaemo5ValueButton::ValueUnderText);
    QMaemo5ListPickSelector *selector2 = new QMaemo5ListPickSelector;
    selector2->setModel(&tableModel);
    selector2->setModelColumn(2);
    selector2->setCurrentIndex(5);
    button2->setPickSelector(selector2);
// ![3]

    // create a custom view we want a table view instead of a list
    QTableView *view = new QTableView();
    view->setEditTriggers(QAbstractItemView::NoEditTriggers);

    // try to get a sensible column width and row height
    view->setModel(&tableModel); // set the model in order to get correct column widths
    view->resizeColumnsToContents();
    view->resizeRowsToContents();
    view->horizontalHeader()->setStretchLastSection(true);

    view->verticalHeader()->setVisible(false);
    view->horizontalHeader()->setVisible(false);
    view->setSelectionBehavior(QAbstractItemView::SelectRows);
    view->setSelectionMode(QAbstractItemView::SingleSelection);

    // five rows should be visible as a default
    if (view->verticalHeader()->sectionSize(0)>0)
        view->setMinimumHeight(view->verticalHeader()->sectionSize(0) * 5);

    QMaemo5ValueButton *button3 = new QMaemo5ValueButton("Value centered under text");
    button3->setValueLayout(QMaemo5ValueButton::ValueUnderTextCentered);
    QMaemo5ListPickSelector *selector3 = new QMaemo5ListPickSelector;
    selector3->setModel(&tableModel);
    selector3->setModelColumn(2);
    selector3->setView(view); // set our new custom view
    selector3->setCurrentIndex(0);
    button3->setPickSelector(selector3);

    layout->addWidget(button1);
    layout->addWidget(button2);
    layout->addWidget(button3);

    toplevel.show();

    return app.exec();
}